QOS FLOW PROCESSING METHOD AND DEVICE, AND COMMUNICATIONS SYSTEM

专利摘要:
embodiments of this application provide a method and device for processing qo flow, and a communications system. a first access network device sends a message used for a service transfer request to a second access network device, and the message used for the service transfer request includes configuration information for a flow of qos on the first device access network, so that the second access network device can configure a mapping relationship from the qos stream to a drb from the second access network device to eu based on the configuration information, and accept the flow eu qos. thus, in a service transfer process, a reliable qos service can be provided to a user, and continuity of a user service can be guaranteed.
公开号:BR112019016009A2
申请号:R112019016009-4
申请日:2018-02-05
公开日:2020-03-31
发明作者:Han Lifeng；Zeng Qinghai
申请人:Huawei Technologies Co., Ltd.；
IPC主号:

专利说明:

“METHOD AND DEVICE FOR PROCESSING QOS FLOW, AND COMMUNICATIONS SYSTEM” [0001] This application claims priority to Chinese Patent Application 201710063757.9, filed with the Chinese Patent Office on February 3, 2017 and entitled QOS FLOW PROCESSING METHOD AND DEVICE, AND COMMUNICATIONS SYSTEM, which is incorporated in this document as a reference in its entirety.
FIELD OF TECHNIQUE [0002] This application refers to communications technologies and, in particular, to a method and device for processing quality of service flow (quality of service, QoS), and a communications system.
BACKGROUND [0003] In a mobile communication system of the fifth generation (the 5th generation mobile communication, 5G) a carrier layer service is access (non access sratum, IN) corresponds to a QoS flow, and a carrier service layer (access sratum, AS) corresponds to a data radio bearer (data radio bearer, DRB) from an air interface and a terrestrial tunnel.
[0004] A NAS QoS stream has a reflective (reflective) feature, and the QoS stream has a uplink-downlink symmetry feature. Specifically, the QoS parameters of the uplink and downlink are the same, and models of traffic flow of uplink and downlink (traffic filter template, TFT) are also symmetrical. For example, an uplink source address and an uplink source port number are, respectively, a downlink destination address and a downlink destination port number, and an uplink destination address and a uplink destination port number are a downlink source address and a downlink source port number, respectively. The data radio bearers (data radio bearer, DRB) in an aerial interface are symmetrical in an uplink direction and in a downlink direction. Specifically, the same QoS service is provided in the direction of the uplink and in the direction of the downlink. Therefore, a downlink QoS service flow that
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2/76 has a reflective QoS characteristic and a corresponding uplink QoS service flow is mapped to the same DRB.
[0005] In the prior art, a network side normally sets up a mapping relationship between a QoS flow and a DRB to a UE using radio resource control (RRC) signaling. For a QoS flow that has a reflective feature, to reduce control signaling, the network side may not configure an UE uplink QoS rule using RRC signaling, but implicitly notifies the UE using if a downlink data packet, where the QoS rule includes a TFT model and a corresponding QoS parameter. For example, the UE receives a downlink data packet that has a reflective characteristic, and performs inversion in a 5 tuple of a packet header of the downlink data packet to obtain an uplink TFT. An index value of a QoS parameter that corresponds to the uplink TFT is an index value of a QoS parameter included in the packet header of the downlink packet. On one side of the radio access network (RAN), a DRB that has a bidirectional characteristic can be used to provide the same QoS service in the uplink and downlink direction. The UE obtains the uplink QoS rule from the downlink data packet, and maps uplink flows obtained based on the QoS rule to the same DRB.
[0006] However, for the UE, there may be a mapping relationship between a QoS flow and a DRB, which is configured by RRC and through a user plan indication. The two configuration modes have different priorities. During automatic switching, since a target access network device does not know a mapping relationship that is between a QoS flow and a DRB and is effective in the UE and, subsequently, cannot update the mapping relationship between a flow of QoS QoS is a DRB, and you don't know how to update the mapping relationship, the continuity of a user service cannot be guaranteed.
SUMMARY [0007] This application provides a method and device for
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3/76 QoS flow processing, and a communications system, in order to provide a reliable QoS service to a user and ensure the continuity of a user service.
[0008] According to a first aspect of the modalities of this request, a QoS flow processing method is provided, the method being carried out by means of a second access network device, and the method includes:
receive, through the second access network device, a message used for a service transfer request, in which the message used for the service transfer request is sent through a first access network device and includes information configuration of a QoS flow, and the configuration information includes at least one of the following: first indication information, where the first indication information indicates a reflective QoS rule characteristic of the QoS flow; second indication information, wherein the second indication information indicates a first mode in which the first access network device obtains the reflective QoS rule characteristic of the QoS flow; third indication information, wherein the third indication information indicates a second mode in which the first access network device notifies user equipment UE of the reflective QoS rule characteristic of the QoS flow; fourth indication information, where the fourth indication information indicates a first mapping relationship that is from the QoS flow to a DRB data radio carrier of the first access network device and which is used when the UE sends the flow of information QoS for the first access network device; fifth indication information, where the fifth indication information indicates that a mode in which the first access network device configures the first mapping relationship for the UE is a user plan configuration mode or a plan configuration mode of control; sixth indication information, wherein the sixth indication information indicates priorities that are between the user plane configuration mode and the control plane configuration mode and which are defined by the first access network device for the UE; seventh indication information, where the seventh indication information indicates that the UE is
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4/76 about to release the mapping relationship that is from the QoS flow to the DRB of the first access network device and which is configured by the first access network device in the user plan configuration mode; and eighth indication information, wherein the eighth indication information indicates a reflective characteristic of the DRB of the first access network device;
configuring, through the second access network device, a QoS flow mapping relationship to a DRB of the second access network device to the UE based on the configuration information; and send, via the second access network device, a message used to respond to the service transfer request to the first access network device, where the message used to respond to the service transfer request is a message that is used to indicate transfer of service and is sent by the first access network device to the UE, and the message used to indicate the transfer of service instructs the UE to map, based on the message used to indicate the transfer of service, the QoS flow from at least one service to the DRB of the second transmission access network device.
[0009] In the QoS flow processing method provided above, the second access network device receives the message that is used for the service transfer request and that is sent by the first access network device, and the message used for the service transfer request includes the QoS flow configuration information on the first access network device, so that the second access network device can configure the QoS flow mapping relationship to the DRB of the second device access network to the UE based on configuration information, and the second access network device accepts the QoS flow from the UE. Therefore, in a service transfer process, a reliable QoS service can be provided for a user, and the continuity of a user service can be guaranteed.
[0010] In a possible project, the configuration information includes the first indication information, and to configure, through the second access network device, a flow mapping relationship
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5/76 QoS for a DRB of the second access network device to the UE based on the configuration information may specifically include: sending, via the second access network device, a downlink data packet that includes the first indication information in the DRB of the second access network device to which the QoS flow is mapped, in order to configure the QoS flow mapping relationship to the DRB of the second access network device for the UE.
[0011] In a possible project, the configuration information includes the third indication information, and the second way is: notify the UE of the reflective QoS rule characteristic of the QoS flow including indication information in a data package downlink, or notify the UE of the reflective QoS rule characteristic of the QoS stream using a user plane control data unit; and the configuration, via the second access network device, of a QoS flow mapping relationship to a DRB of the second access network device to the UE based on the configuration information may include, specifically: notify, by through the second access network device, the UE of the reflective QoS rule characteristic of the QoS flow in the second mode indicated in the third indication information, in order to configure the QoS flow mapping relationship to the DRB of the second device access network to the UE.
[0012] In a possible project, the configuration information additionally includes the second indication information, the first way is to obtain the reflective QoS rule characteristic of the QoS flow using control signaling between the first network device access network and a main network, or obtain the reflective QoS rule characteristic of the QoS stream using indication information included in a downlink user data packet between the first access network device and the main network, and the second indication information indicates that the first access network device obtains the reflective QoS rule characteristic of the QoS flow using the indication information included in the downlink user data packet between the first network device access and the main network; and the configuration, through the second access network device, of a mapping relationship of the
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6/76 QoS flow to a DRB from the second access network device to the UE, based on the configuration information, may include, specifically: notify, through the second access network device, the UE of the reflective characteristic of QoS rule of the QoS flow in the second mode indicated in the third indication information, in order to configure the QoS flow mapping relationship to the DRB of the second access network device for the UE.
[0013] In a possible project, the configuration information includes the seventh indication information, and the user plan configuration mode is: configure the mapping relationship from the QoS flow to the DRB to the UE using indication information included in a downlink data packet, or configure the QoS flow mapping relationship for the DRB to the UE using a user plane control data unit; and the configuration, via the second access network device, of a QoS flow mapping relationship to a DRB of the second access network device to the UE, based on the configuration information may include, specifically: configure, through the second access network device, for the QoS flow in the mapping relationship that is from the QoS flow to the DRB of the first access network device and that is configured through the first access network device to the UE in user plan configuration mode, the QoS flow mapping relationship to the DRB of the second access network device.
[0014] Optionally, the configuration, by means of the second access network device, for the QoS flow in the mapping relation that is from the QoS flow to the DRB of the first access network device and which is configured by through the first access network device to the UE in user plan configuration mode, the QoS flow mapping relationship to the DRB of the second access network device can include, specifically: configure, via the second device access network, for the QoS flow in the mapping relationship which is from the QoS flow to the DRB of the first access network device and which is configured by the first access network device to the UE in plan configuration mode user interface, the QoS flow mapping relationship to the DRB of the
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7/76 second access network device in user plane configuration mode or control plane configuration mode, where the control plane configuration mode is: configure the QoS flow mapping relationship for the DRB to the UE using RRC radio resource control signaling.
[0015] In a possible project, the configuration information includes the fourth indication information, and the configuration, through the second access network device, of a QoS flow mapping relationship to a DRB of the second network device access to the UE, based on the configuration information, may include, specifically: updating, using the second access network device, the first mapping relation, based on the fourth indication information, in order to obtain the relation mapping the QoS flow to the DRB of the second access network device.
[0016] In a possible project, the configuration information additionally includes the fifth indication information, and the configuration, through the second access network device, of a QoS flow mapping relationship for a second DRB access network device for the UE, based on the configuration information, may include, specifically: update, using the second access network device, the first mapping relation based on the fourth indication information and the fifth information of indication, in order to obtain the mapping relation of the QoS flow to the DRB of the second access network device.
[0017] In a possible project, the configuration information includes the sixth indication information, and the configuration, through the second access network device, of a mapping relation of the QoS flow to a DRB of the second network device access to the UE, based on the configuration information, may include, specifically: configuring, through the second access network device, the QoS flow mapping relationship to the DRB of the second access network device to the EU based on the sixth referral information.
[0018] In a possible project, the configuration information includes the sixth indication information, and the method additionally includes:
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8/76 update, through the second access network device, the priorities between the user plan configuration mode and the control plan configuration mode in the UE, based on the sixth indication information. In addition, the message used to respond to the service transfer request additionally includes the updated priorities between the user plan configuration mode and the control plan configuration mode.
[0019] In a possible project, the configuration information includes the eighth indication information, and the configuration, through the second access network device, of a QoS flow mapping relationship to a DRB of the second network device access to the UE, based on the configuration information, includes: defining, by means of the second access network device, a reflective characteristic of the DRB of the second access network device, based on the eighth indication information; and configure, through the second access network device, the QoS flow mapping relation to the DRB of the second access network device to the UE in the user plan configuration mode, in which the configuration mode of user plan is to configure the QoS flow mapping relationship to the DRB for the UE using indication information included in a downlink data packet, or to configure the QoS flow mapping relationship to the DRB for the UE using a user plane control data unit. In addition, the message used to respond to the service transfer request additionally includes information indicating the reflective characteristic of the DRB of the second access network device.
[0020] In a possible project, after sending, via the second access network device, a message used to respond to the service transfer request for the first access network device, the method may additionally include: receive, via the second access network device, a PDCP SN packet data convergence protocol sequence number status report that is sent by the first access network device to the DRB of the first access network device to which the QoS flow is mapped, where the PDCP SN status report includes the first indication information.
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9/76 [0021] In a possible project, after sending, via the second access network device, a message used to respond to the service transfer request for the first access network device, the method may include additionally: receiving, via the second access network device, a downlink data packet that needs to be forwarded and which is sent by the first access network device, in which an encapsulation header of the link data packet descendant that needs to be forwarded includes the first referral information.
[0022] In accordance with a second aspect of the modalities of this request, a QoS flow processing method is provided, in which the method is performed by means of a first access network device, and the method includes:
send, via the first access network device, a message used for a service transfer request to a second access network device, where the message used for the service transfer request includes configuration information for a flow QoS, and the configuration information includes at least one of the following: first indication information, where the first indication information indicates a reflective QoS rule characteristic of the QoS flow; second indication information, wherein the second indication information indicates a first mode in which the first access network device obtains the reflective QoS rule characteristic of the QoS flow; third indication information, wherein the third indication information indicates a second mode in which the first access network device notifies user equipment UE of the reflective QoS rule characteristic of the QoS flow; fourth indication information, where the fourth indication information indicates a first mapping relationship that is from the QoS flow to a DRB data radio carrier of the first access network device and which is used when the UE sends the flow of information QoS for the first access network device; fifth indication information, where the fifth indication information indicates that a mode in which the first access network device configures the first mapping relationship for the UE is a mode of
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10/76 user plane configuration or a control plane configuration mode; sixth indication information, wherein the sixth indication information indicates priorities that are between the user plane configuration mode and the control plane configuration mode and which are sent by the first access network device to the UE; seventh indication information, where the seventh indication information indicates that the UE is about to release the mapping relationship that is from the QoS flow to the DRB of the first access network device and that is configured by the first network device access in user plan configuration mode; and eighth indication information, wherein the eighth indication information indicates a reflective characteristic of the DRB of the first access network device;
receiving, through the first access network device, a message which is used to respond to the service transfer request and which is sent by the second access network device; and send, via the first access network device to the UE, a message used to indicate transfer of service, in which the message used to indicate transfer of service instructs the UE to map, based on the indication message, the QoS flow from at least one service to the DRB of the second transmission access network device.
[0023] In the QoS flow processing method provided above, the first access network device sends the message used for the service transfer request to the second access network device, and the message used for the transfer request service includes the QoS flow configuration information on the first access network device, so that the second access network device can configure the QoS flow mapping relationship to the DRB of the second access network device for the UE based on the configuration information, and accept the UE's QoS flow. Therefore, in a service transfer process, a reliable QoS service can be provided for a user, and the continuity of a user service can be guaranteed.
[0024] In a possible project, the first way is: to obtain the reflective characteristic of the QoS rule of the QoS flow using signaling
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11/76 control between the first access network device and a main network, or obtain the reflective QoS rule characteristic of the QoS stream using indication information included in a downlink user data packet between the first access network device and the main network.
[0025] In a possible project, the second way is: to notify the UE of the reflective QoS rule characteristic of the QoS flow including indication information in a downlink data packet, or to notify the UE of the reflective characteristic of QoS flow QoS rule of the QoS flow using a user plan control data unit.
[0026] In a possible project, the user plan configuration mode is: configure the QoS flow mapping relationship for the DRB to the UE using indication information included in a downlink data package, or configure the QoS flow mapping relationship for the DRB to the UE using a user plan control data unit; and the control plan configuration mode is: configure the QoS flow mapping relationship for the DRB to the UE using RRC radio resource control signaling.
[0027] In a possible project, after receiving, through the first access network device, a reply message sent by the second access network device, the method additionally includes: sending, through the first access device access network to the second access network device, a PDCP SN packet data convergence protocol sequence number status report from the DRB of the first access network device to which the QoS flow is mapped, in that the PDCP SN status report includes the first indication information.
[0028] In a possible project, after receiving, via the first access network device, a response message sent by the second access network device, the method additionally includes: sending, through the first access device access network for the second access network device, a downlink data packet that needs to be forwarded, where an encapsulation header of the downlink data packet that needs to be forwarded includes the first
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12/76 referral information.
[0029] According to a third aspect, to implement the QoS flow processing method in the first aspect, one embodiment of this application provides a QoS flow processing device. The QoS flow processing device has a function of implement the QoS flow processing method. The function can be implemented by hardware, or by hardware that runs corresponding software. The hardware or software includes one or more modules that correspond to the function.
[0030] In a possible implementation of the third aspect, the QoS flow processing device includes a plurality of modules or function units, configured to implement any QoS flow processing method in the first aspect.
[0031] According to a fourth aspect, an embodiment of this application provides an access network device, and an access network device structure can include a processor and a transceiver. The processor is configured to assist the access network device in carrying out a corresponding function in any QoS flow processing method in the first aspect. The transceiver is configured to assist communication between the access network device and another network device, and can be, for example, a radio frequency module or corresponding baseband module. The access network device may additionally include a memory. The memory is configured to be coupled to the processor, and stores a program instruction and data that are required by the access network device to perform the QoS flow processing method.
[0032] According to a fifth aspect, one embodiment of this request provides a computer storage media, configured to store a computer software instruction used by the antecedent access network device, and the computer storage media includes a program designed to accomplish the first aspect.
[0033] According to a sixth aspect, one embodiment of this application provides a computer program product, which includes an instruction. When the computer program is run by a computer, the instruction allows the computer to perform functions performed by the
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13/76 second access network device in the previous method.
[0034] According to a seventh aspect, to implement the QoS flow processing method in the second aspect, one embodiment of this application provides a QoS flow processing device. The QoS flow processing device has a function of implement the QoS flow processing method. The function can be implemented by hardware, or by hardware that runs corresponding software. The hardware or software includes one or more modules that correspond to the function.
[0035] In a possible implementation of the seventh aspect, the QoS flow processing device includes a plurality of modules or function units, configured to implement any QoS flow processing method in the second aspect.
[0036] According to an eighth aspect, an embodiment of this application provides an access network device, and an access network device structure can include a processor and a transceiver. The processor is configured to assist the device in performing a corresponding function in any QoS flow processing method in the second aspect. The transceiver is configured to assist communication between the access network device and another network device, and can be, for example, a radio frequency module or corresponding baseband module. The access network device may additionally include a memory. The memory is configured to be coupled to the processor, and stores a program instruction and data that are required by the access network device to perform the QoS flow processing method.
[0037] According to a ninth aspect, one embodiment of this request provides a computer storage media, configured to store a computer software instruction used by the server, and the computer storage media includes a program designed to perform the second aspect.
[0038] According to a tenth aspect, one embodiment of this application provides a computer program product, which includes an instruction. When the computer program is executed by a computer, the instruction allows the computer to perform functions performed by the first network access device in the previous method.
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14/76 [0039] According to an eleventh aspect, one embodiment of this request provides a communications system, which includes the second access network device of the QoS flow processing device provided in the third aspect, the first access network of the QoS flow processing device provided in the seventh aspect, and UE.
[0040] According to a twelfth aspect, one embodiment of this request provides a communications system, which includes the access network device provided in the fourth aspect, the access network device provided in the eighth aspect, and UE.
[0041] In the QoS flow processing method and device, and in the communications system that are provided in the modalities of this request, the first access network device sends the message used for the service transfer request to the second access network, and the message used for the service transfer request includes the QoS flow configuration information on the first access network device, so that the second access network device can configure the flow mapping relationship of QoS to the DRB of the second access network device to the UE based on the configuration information, and accept the QoS flow from the UE. Therefore, in a service transfer process, a reliable QoS service can be provided for a user, and the continuity of a user service can be guaranteed.
[0042] According to a thirteenth aspect, an embodiment of this request provides a method of processing communication, applied to a terminal or to a processor of the terminal, and includes:
initiate the establishment of a PDU protocol data unit session; and during a PDU session establishment process, obtaining configuration information that is from a radio bearer of DRB data and that is sent by a radio access network device, where the DRB configuration information includes information from DRB identity, PDU session identity information, referral information indicating whether the DRB is a standard DRB, and DRB protocol layer configuration information.
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15/76 [0043] Based on the thirteenth aspect, in a possible first implantation of the thirteenth aspect, the method additionally includes:
when no corresponding DRB is configured for an uplink QoS quality of service stream, send data in the uplink QoS stream in the standard DRB, where the uplink QoS stream belongs to the PDU session.
[0044] Based on the thirteenth aspect or the first possible implantation of the thirteenth aspect, in a second possible implantation of the thirteenth aspect, the DRB configuration information is included in a DRB addition or exclusion signaling element sent by radio access network device.
[0045] According to a fourteenth aspect, one embodiment of this application provides a method of processing communication, applied to a radio access network device or to a processor of the radio access network device, and which includes:
establish a PDU protocol data unit session for a terminal; and during a PDU session establishment process, sending configuration information from a DRB data radio carrier to the terminal, where the DRB configuration information includes DRB identity information, PDU session identity information, indication information indicating whether the DRB is a standard DRB, and DRB protocol layer configuration information.
[0046] Based on the fourteenth aspect, in a first possible implantation of the fourteenth aspect, the DRB configuration information is included in a DRB addition or deletion signaling element sent by the radio access network device.
[0047] According to a fifteenth aspect, an embodiment of this application provides a communication processing device, in which the device is a terminal or a terminal processor and includes:
a unit configured to initiate the establishment of a protocol data unit session (PDU session); and a unit configured for: during a process
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16/76 PDU session establishment, obtain dedicated radio resource configuration information sent by a radio access network device, where the dedicated radio resource configuration information includes configuration information for a radio bearer DRB data, and DRB configuration information includes DRB identity information, PDU session identity information, referral information that indicates whether the DRB is a standard DRB, and DRB protocol layer configuration information.
[0048] Based on the fifteenth aspect, in a first possible implantation of the fifteenth aspect, the device additionally includes:
a unit configured for: when no corresponding DRB is configured for an uplink QoS quality of service flow, send data in the uplink QoS flow in the standard DRB, where the uplink QoS flow belongs to the PDU session .
[0049] Based on the fifteenth aspect or the first possible implantation of the fifteenth aspect, in a second possible implantation of the fifteenth aspect, the DRB configuration information is included in a DRB addition or deletion signaling element sent by radio access network device.
[0050] According to a sixteenth aspect, an embodiment of this application provides a communication processing device, wherein the device is a radio access network device or a processor of the radio access network device, and includes :
a unit configured to establish a protocol data unit session (PDU session) for a terminal; and a unit configured to: during a PDU session establishment process, send configuration information from a DRB radio data carrier to the terminal, where the DRB configuration information includes DRB identity information, DRB identity information PDU session, referral information indicating whether the DRB is a standard DRB, and DRB protocol layer configuration information.
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17/76 [0051] Based on the sixteenth aspect, in a possible first deployment of the sixteenth aspect, the DRB configuration information is included in a DRB addition or deletion signaling element sent by the network access device via radio.
[0052] According to a seventeenth aspect, one embodiment of this request provides a computer storage medium, which includes a memory, in which the memory stores code, and when the code is invoked, the method, in the thirteenth aspect or any possible implantation of the thirteenth aspect or the method, in the fourteenth aspect or any possible implantation of the fourteenth aspect, is implanted.
BRIEF DESCRIPTION OF THE DRAWINGS [0053] Figure 1 is a schematic diagram of an application scenario for a QoS flow processing method, according to one embodiment of this request;
[0054] Figure 2 is a schematic diagram of QoS flow processing on a mobile network, according to one embodiment of this request;
[0055] Figure 3 is a schematic flow chart of a QoS flow processing method, according to one embodiment of this request;
[0056] Figure 4 is another schematic flowchart of a QoS flow processing method, according to one embodiment of this request;
[0057] Figure 5 is another schematic flowchart of a QoS flow processing method, according to one embodiment of this request;
[0058] Figure 6 is a schematic architectural diagram of an air interface protocol stack between a radio access network device and an UE;
[0059] Figure 7 is a schematic diagram showing a change in a mapping relationship from a QoS flow to a DRB;
[0060] Figure 8 is a schematic structural diagram of an access network device, according to an embodiment of this application;
[0061] Figure 9 is another schematic structural diagram of an access network device, according to an embodiment of this application;
[0062] Figure 10 is another schematic structural diagram of an access network device, according to an embodiment of this application; and
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18/76 [0063] Figure 11 is another schematic structural diagram of an access network device, according to one embodiment of this application.
DESCRIPTION OF THE MODALITIES [0064] The technical solutions, provided in the modalities of this application, are applicable to a mobile network. Figure 1 is a schematic diagram of a scenario for applying a QoS flow processing method, according to one embodiment of this request. As shown in Figure 1, the QoS flow processing method, provided in this modality of this order, can be applied to a new radio access network (new RAN). The new RAN includes a gNB next generation access network device (5G base station) and an evolved Long Term Evolution, eLTE access network device (evolved NodeB, eNB).
[0065] Figure 2 is a schematic diagram of QoS flow transmission over a mobile network, according to one embodiment of this request. As shown in Figure 2, a NAS service carrier corresponds to a QoS flow, and an AS service carrier corresponds to an overhead interface and terrestrial tunnel DRB. The tunnel is established based on a session of a protocol data unit (PDU). In other words, the QoS flows that belong to the same PDU session use the same tunnel. The PDU session is a link between user equipment (user equipment, UE) and a data network (data network, DN) to provide a protocol data unit connection service. Each PDU session has a unique identity, and the unique identity of the PDU session can be one of the following: a PDU session identifier, an access point name (APN), a device identity main user plan network address, an address (for example, an IP address) of the main user plan network device, and an IP address allocated by the main user plan network device to the UE. A QoS flow refers to data flows that have the same QoS requirement in a PDU session, and can be a plurality of IP flows that have the same QoS requirement.
[0066] The network elements involved in technical solutions
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19/76 provided in the modalities of this request essentially include:
[0067] (1) An access network device [0068] A base station, which includes a control plan and a user plan, provides functions such as service establishment, mobility, and user data programming, and includes an eLTE eNB and a gNB.
[0069] (2) A core network element [0070] A core network control plan, namely a next generation control plan (NG-CP), includes a repository function network element (network element registration and discovery functions to implement discovery and communication between NG-CPs), an access and mobility management function (to process access and mobility management at the EU level), a session management function (which supports allocating the IP address of the UE, selecting and controlling a user plan entity, and additionally includes a QoS-related rule, session-related loading and validity checking), a policy control function (which provides a dynamic policy, for example, QoS, loading, access control and routing, for another function), and a network capacity exposure function (which provides some information capacity shares open to a third party).
[0071] A main network user plan, namely a next generation user plan (NG-UP) or a user plan gateway (UPGW), includes interconnected external nodes a PDU session, packet routing and forwarding, transmission processing (QoS enforcement), intrasystem / intersystem switching anchor, and an optional function such as packet inspection and validity checking.
[0072] (3) An EU user equipment, which performs functions such as sending and receiving data, and measurement.
[0073] (4) An application server, which provides an application-level service requirement.
[0074] (5) A packet data network, PDN, which is also called a DN and is a data network external to a network
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3GPP, for example, a network, such as an Internet network that provides a data service to the UE.
[0075] The following is a detailed description of the technical solutions for this application with reference to specific modalities. The following specific modalities may be mutually combined, and the same or similar concepts or processes may not be described repeatedly in some modalities.
[0076] Figure 3 is a schematic flowchart of a QoS flow processing method, according to one embodiment of this request. As shown in Figure 3, the QoS flow processing method, provided in this mode, includes the following steps:
[0077] S301. A first access network device sends a message used for a service transfer request to a second access network device.
[0078] S302. The second access network device processes a QoS stream from a UE based on the message used for the service transfer request.
[0079] S303. The second access network device sends a message used to respond to the service transfer request to the first access network device.
[0080] S304. The first access network device sends a message used to indicate transfer of service to the UE.
[0081] S305. The UE accesses the second access network device based on the message used to indicate the transfer of service, and performs QoS flow transmission.
[0082] It should be understood that, prior to S301, the first access network device provides a service to the UE, and when the first access network device determines, based on information, such as a reported measurement signal by the UE, that the UE needs to be automatically switched to the second access network device, the first access network device sends the message used for the service transfer request to the second access network device. To ensure continuity of a UE service, the message used for the service transfer request must include a QoS parameter and
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21/76 required QoS configuration information from the UE QoS flow, so that the second access network device processes the UE QoS flow based on the QoS flow configuration information.
[0083] In other words, the message that is used for the service transfer request and that is sent by the first access network device to the second access network device includes the QoS flow configuration information, and the second access network device configures a QoS flow mapping relationship to a DRB from the second access network device to the UE based on configuration information, in order to accept the UE's QoS flow.
[0084] Possibly, some QoS flows, on the first access network device, have a reflective QoS rule characteristic. The first access network device can receive a QoS rule reflective characteristic of the QoS flow using control plan signaling between the first access network device and a main network. The first access network device can alternatively obtain the reflective QoS rule characteristic of the QoS flow using a user data packet between the first access network device and the main network. For example, referral information is included in an encapsulation header of a downlink user data packet between the primary network and the first access network device, to indicate that the QoS flow data packet has the reflective QoS rule characteristic. An identity (Identity, ID) of the QoS stream can also be included in the encapsulation header of the user data packet between the access network device and the main network, and the ID flow stream. QoS can indicate the QoS parameter of the QoS flow, and can additionally identify the QoS flow. The main network can also notify, using a non-access layer message, the UE that the QoS flow from the UE has the reflective characteristic of QoS rule. The QoS parameter includes one or more of the following: a packet delay quota, a packet loss rate, a priority, a rate, and the like required by a service flow .
[0085] On an air interface side, the first access network device can notify, in a user plan mode, the UE that the QoS flow has the reflexive QoS rule characteristic. In an optional mode, O
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The first access network device may include indication information in a packet header of a downlink data packet, to indicate that the QoS flow data packet has the reflective QoS rule characteristic. of indication can be located in a protocol header of any one of a PDCP layer, an RLC layer, a MAC layer, a PDAP layer, and the like. PDAP layer is a protocol layer above the PDCP layer. The PDAP protocol stack entity is configured based on a PDU session. Specifically, a PDAP protocol entity is established for a PDU session.
[0086] In another optional mode, the first access network device can notify, using a user plan control data unit, the UE that a QoS flow data packet has the rule reflective characteristic QoS control unit. The user plan control data unit includes a control PDU of any of a PDAP protocol layer, a PDCP protocol layer, an RLC protocol layer, a MAC protocol layer, and the like. For example, a packet data convergence protocol, PDCP, control PDU is used to indicate a QoS flow ID and a sequence number PDCP sequence number (SN) for the data packet. which has the reflective characteristic of QoS rule.
[0087] Additionally, the first access network device additionally configures a QoS flow mapping relationship to a DRB of the first access network device for the UE.
[0088] In an optional first category configuration mode, the first access network device can configure the QoS flow mapping relationship to the DRB of the first access network device to the UE in a control plane mode , for example, configure the QoS flow mapping relationship to the DRB of the first access network device to the UE using radio resource control (RRC) signaling. When sending uplink data, the UE sends, based on a QoS flow obtained using a NAS TFT and the mapping relationship that is from the QoS flow to the DRB of the first access network device and which is configured by an AS, a
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23/76 uplink data packet in a corresponding DRB.
[0089] In an optional second category configuration mode, the first access network device can alternatively configure the QoS flow mapping relationship to the DRB of the first access network device to the UE in an access mode user plan. In an optional mode, for the QoS flow that has the reflective QoS rule characteristic, the QoS flow mapping relationship to the DRB of the first access network device is configured for the UE including indication information in a downlink data packet. For example, the first access network device sends a downlink data packet from a QoS 1 stream into a DRB 1 of the first access network device, and indicates to the UE that the QoS 1 stream has the reflective characteristic . The UE receives the data packet from the QoS stream 1 in DRB 1; performs inversion in a tuple of 5 of a packet header of the downlink data packet to obtain an uplink TFT, where a QoS index value that corresponds to the TFT is the QoS flow 1; and maps a data packet from the uplink QoS flow 1 to the DRB 1. The UE can obtain a mapping relationship from the QoS flow 1 to the DRB 1, namely, a mapping relationship from a QoS flow to uplink to a DRB in this way, and store the mapping interface.
[0090] Additionally, configuring the QoS flow mapping relationship to the DRB in the user plan mode includes, additionally: notifying, through the first access network device, the UE of a reflective feature of the DRB of the first access network device using RRC signaling, in which the reflective characteristic of the DRB means that it is allowed to configure the QoS flow mapping relationship for the DRB in the user plan mode. The first access network device configures a reflective characteristic of each DRB, and the first access network device can also configure the reflective characteristic of the DRB of the first access network device based on a session level and, if a session is configured with a reflective DRB feature, all DRBs that match the session have the reflective feature. The UE receives a downlink data packet from a QoS stream 2 in a DRB 2. If the data packet has the reflective characteristic of
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24/76 QoS rule and DRB 2 have the reflective characteristic, the UE maps a data packet from an uplink QoS stream 2 to DRB 2. If DRB 2 does not have reflective characteristic, the mapping relationship of the QoS flow to the DRB for the UE cannot be configured in user plan mode. Additionally, the first access network device can configure or modify, using RRC signaling, the reflective characteristic of a DRB or the reflective characteristic of DRBs that correspond to a session.
[0091] Another optional way to configure the QoS flow mapping relationship for DRB in user plan mode is: indicate, through the first access network device, a QoS flow ID in a packet header of a downlink data packet, and instruct, in a user plan indication mode, the UE to map an uplink QoS stream indicated by the QoS stream ID to a DRB in which the downstream data packet corresponding downlink is received. User plan referral mode means that referral information is included in a user plan data package, and referral information can be an independent referral. It should be noted that the way of configuring the QoS flow mapping relationship to DRB in user plan mode is also applicable to a QoS flow that does not have the reflective QoS rule characteristic. For example, the UE receives a downlink data packet from a QoS 2 stream into a DRB 2 and, if the data packet does not have the reflective QoS rule feature, but the DRB 2 has the reflective feature, the UE maps a packet of data from an uplink QoS 2 stream to the DRB 2. A TFT model for a QoS 2 stream data packet is not obtained using a reflective feature of a downlink data packet.
[0092] Another way to configure the QoS flow mapping relationship to the DRB in user plan mode is: configure the QoS flow mapping relationship to the DRB for the UE using a control data unit user plan. The user plan control data unit includes a control PDU of any one of a PDAP protocol layer, a PDCP protocol layer, an RLC protocol layer, a MAC protocol layer, and the like. For example, a PDCP control PDU is used to indicate a group of
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QoS flow ID. The UE receives the PDCP control PDU, and maps uplink QoS flows indicated by the QoS flow ID group to the DRB. It should be noted that the user plan mode in which to configure the QoS flow mapping relationship to the DRB is also applicable to a QoS flow that does not have the reflective QoS rule characteristic.
[0093] It should be noted that the mapping relationship of an uplink QoS flow to a DRB can be configured in the above two categories of configuration modes, and priorities can be defined between the two categories of configuration modes. It should be understood that the priority definitions between the two categories of configuration modes may include the following cases: A priority of the first category configuration mode is higher than a priority of the second category configuration mode, that is, the mapping relationship that is from the QoS flow to the DRB and that is configured in the control plan mode prevails; or a second category configuration mode priority is higher than a first category configuration mode priority, that is, the mapping relationship that is from the QoS flow to the DRB and that is configured in user plan mode prevails; or a configuration mode that corresponds to a last mapping relation received by the UE has a higher priority, that is, the last mapping relation received by the UE prevails. In the UE, for the same category of configuration mode, an old mapping relation stored in the UE is updated with a newly configured mapping relation. For example, an original mapping relationship configured using RRC can be updated using a new mapping relationship configured using RRC.
[0094] Possibly, the priorities between the two categories of configuration modes can be specified in the protocol standard, or negotiated between access network devices. Then, the priority settings between the two categories of configuration modes are the same for all access network devices. The priorities between the above two categories of configuration modes can be set by an access network device by itself. In other words, the access network device can define, for the UE, the priority settings between the two categories of configuration modes to configure the
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26/76 mapping the QoS flow to the DRB.
[0095] It should be noted that, for the UE, it is also possible that no DRB that corresponds to an uplink QoS flow is configured on the first access network device. The UE then sends a data packet from the QoS stream in a standard carrier (default DRB) of the first access network device.
[0096] To ensure continuity of a UE service, the message that is used for the service transfer request and that is sent by the first access network device to the second access network device needs to include the configuration information of the flow of QoS from the UE. Configuration information can include at least one of the following:
first indication information, where the first indication information indicates a reflective QoS rule characteristic of the QoS flow; second indication information, wherein the second indication information indicates a first mode in which the first access network device obtains the reflective QoS rule characteristic of the QoS flow; third indication information, wherein the third indication information indicates a second mode in which the first access network device notifies the user equipment UE of the reflective QoS rule characteristic of the QoS flow; fourth indication information, where the fourth indication information indicates a first mapping relationship that is from the QoS flow to a DRB data radio carrier of the first access network device and which is used when the UE sends the flow of information QoS for the first access network device; fifth indication information, where the fifth indication information indicates that a mode in which the first access network device configures the first mapping relationship for the UE is a user plan configuration mode or a plan configuration mode of control; sixth indication information, wherein the sixth indication information indicates priorities that are between the user plane configuration mode and the control plane configuration mode and which are defined by the first access network device for the UE; seventh indication information, where the seventh indication information indicates that the UE is
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27/76 about to release the mapping relationship that is from the QoS flow to the DRB of the first access network device and which is configured by the first access network device in the user plan configuration mode; and eighth indication information, where the eighth indication information indicates the DRB reflective characteristic of the first access network device.
[0097] It should be noted that, for the UE, it is also possible that no DRB that corresponds to an uplink QoS flow is configured on the first access network device. The UE then sends a data packet from the QoS stream on the default carrier (default DRB) of the first access network device. In addition, configuration information can include an identity (for example, a default DRB ID) of the default bearer (default DRB) on the first access network device, session information that matches the standard DRB, and session information from a Dedicated DRB. The session information includes a session identity.
[0098] For example, the configuration information includes an indication (namely, the first indication information) of the reflective QoS rule characteristic of the QoS stream, and the second access network device can send a data packet from downlink in the DRB of the second access network device to which the QoS flow is mapped, and include the indication of the reflective QoS rule characteristic of the QoS flow in a packet header of the data packet. For example, it can be implicitly indicated that the data package has the QoS flow reflective characteristic of the QoS flow including a QoS flow ID, or it can be indicated using dedicated indication information , that the data packet has the reflective QoS rule characteristic of the QoS stream. After receiving the downlink data packet that includes the indication of the reflective QoS rule feature of the QoS stream, the UE can map a stream uplink QoS indicated by indication information for a DRB in which the corresponding downlink data packet is received. That is, the second access network device can configure the QoS flow mapping relationship to the DRB of the second access network device to the UE in user plan mode.
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28/76 [0099] For example, the configuration information includes an indication (namely, the third indication information) that indicates the way in which the first access network device notifies the UE of the reflective QoS rule feature of the flow of QoS, and the second access network device may determine, with reference to a notification mode of the first access network device, a mode in which the second access network device notifies the UE of the reflective feature of the access rule. QoS of the QoS stream. That is, the second access network device can notify the UE of the reflective QoS rule characteristic of the QoS stream in the manner indicated in the third indication information. After receiving a notification message of the reflective QoS rule characteristic of the QoS stream, the UE maps an uplink QoS stream to a DRB in which a corresponding downlink data packet is received. That is, the second access network device can configure the QoS flow mapping relationship to the DRB of the second access network device to the UE in user plan mode.
[0100] In addition, the configuration information additionally includes an indication (namely, the second indication information) that indicates the way in which the first access network device obtains the reflective characteristic of the flow's QoS rule of QoS; and for a QoS flow that has the reflective QoS rule characteristic obtained using control signaling, the second access network device may not include independent indication information in a downlink data packet to indicate that the packet data has the reflective characteristic of the QoS rule of the QoS flow. In other words, the configuration information additionally includes the second indication information, and the second indication information indicates that the first access network device obtains the reflective QoS rule feature of the QoS stream using the indication information included in a downlink user data packet between the first access network device and the main network. Then, the second access network device can notify the UE of the reflective QoS rule characteristic of the QoS stream in the manner indicated in the third indication information. After receiving a notification message for the reflective rule feature
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29/76 of QoS from the QoS stream, the UE maps an uplink QoS stream to a DRB in which the corresponding downlink data packet is received. That is, the second access network device can configure the QoS flow mapping relationship to the DRB of the second access network device to the UE in user plan mode.
[0101] For example, the configuration information includes an invalidation indication (namely, the seventh indication information) of the mapping relationship that is from the QoS flow to the DRB of the first access network device and that is configured by the first access network device for the UE in user plan configuration mode. The invalidation indication means that, during the transfer of service from the UE, if the DRB of the first access network device is released, the UE releases the mapping relation that is from the QoS flow to the DRB and that is configured in the mode user plan configuration. Then, the second access network device needs to reconfigure, for the QoS flow in the mapping relationship that is from the QoS flow to the DRB of the first access network device and that is released on one side of the first network device access, the QoS flow mapping relationship to the DRB of the second access network device on one side of the second access network device. Specifically, the second access network device can configure the mapping relationship (referred to as a second mapping relationship below) of the QoS flow to the DRB of the second access network device to the UE in the configuration plan mode control plan configuration mode.
[0102] Additionally, the second access network device can configure the second mapping interface for the UE in the control plane configuration mode (ie, configure the QoS flow mapping interface for the DRB of the second access device. access network to the UE) and then the second access network device includes the second mapping relationship in the message used to respond to the service transfer request. After receiving the message used to respond to the service transfer request, the first access network device notifies the UE of the second mapping relationship configured by the second access network device. After accessing,
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30/76 successful, the second access network device, the UE sends, based on the second mapping relation configured by the second access network device, a QoS uplink data packet in the DRB which is second access network device and that corresponds to the QoS flow.
[0103] The second access network device can alternatively configure the second mapping relation for the UE in the user plan configuration mode.
[0104] In one possibility, the second access network device configures the second mapping relation for the UE including indication information in a downlink data packet. For example, the second access network device enables a data packet from an uplink QoS 1 stream that is sent in a DRB 1 of the second access network device, then the second access network device sends a data packet of the downlink link QoS 1 stream which has the reflective QoS rule characteristic in the DRB 1 of the second access network device. After receiving this data packet on DRB 1, the UE obtains an uplink QoS rule using the reflective QoS rule feature, and learns that the uplink QoS 1 stream data packet is sent on the DRB 1, where the uplink QoS rule includes an uplink TFT and a corresponding QoS parameter, and the QoS parameter is indexed using QoS flow 1. As another example, the second network device access includes a QoS flow ID in a packet header of the downlink data packet, to instruct the UE to map an uplink QoS flow identified by the QoS flow ID to a DRB in which the data packet corresponding downlink link is received. It should be noted that this mode is also applicable to a QoS flow that does not have the reflective QoS rule characteristic.
[0105] In another possibility, the second access network device notifies the UE using a user plane control data unit. For example, a PDCP control PDU is used to indicate a QoS flow ID group. The UE receives the PDCP control PDU, and maps an uplink QoS flow indicated by the ID ID group.
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31/76 QoS flow to the DRB.
[0106] For example, the configuration information includes the first mapping relationship (namely, the fourth indication information) which is from the QoS stream to the DRB data radio carrier of the first access network device and which is used when the UE sends the QoS stream to the first access network device and then the second access network device can determine, based on a predefined algorithm, the possibility of updating the first mapping relationship.
[0107] When the first mapping relationship is updated, in one possibility, the priorities between the two categories of configuration modes for configuring the QoS flow mapping relationship for the DRB can be specified in the protocol standard, or negotiated between access network devices. Then, the priority settings between the two categories of configuration modes are the same for all access network devices. Additionally, if the priority settings between the two categories of configuration modes are the same for the first access network device and the second access network device, the second access network device can update the flow mapping relationship. QoS for the DRB of the second access network device in an appropriate configuration mode, for example, selecting a same-level or higher-level configuration mode to obtain the second QoS flow mapping relationship for the second device's DRB access network.
[0108] Additionally, the configuration information additionally includes the configuration mode (namely, the fifth indication information) in which the first access network device configures the first mapping relation for the UE, and the second access network device can select an appropriate configuration mode based on the fourth indication information and the fifth indication information with reference to the priorities between the two configuration modes, to update the QoS flow mapping relationship to the DRB , in order to obtain the second QoS flow mapping relation to the DRB of the second access network device.
[0109] The second access network device can alternatively configure the QoS flow mapping relationship for the DRB of the
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32/76 second access network device in a standard high priority configuration mode. In one possibility, it is specified, either through specification in the protocol standard or through negotiation between access network devices, that a priority of a mapping relationship that is from a QoS flow to a DRB of an access network device that is configured by the target access network device in a service transfer process is the highest. In addition, the second access network device includes the second mapping interface configured for the UE in the message used to respond to the service transfer request. After receiving the message used to respond to the service transfer request, the first access network device notifies the UE of the second mapping relationship configured by the second access network device. The UE sets the mode for configuring the second mapping ratio to a higher priority and updates the QoS flow mapping ratio to the DRB. After successfully accessing the second access network device, the UE sends, based on the second mapping relationship, a QoS uplink data packet in the DRB of the second access network device that corresponds to the QoS flow.
[0110] For example, the configuration information includes the priorities (namely, the sixth indication information) between the user plane configuration mode and the control plane configuration mode on the first access network device. As described above, the priorities between the two categories of configuration modes for configuring the QoS flow mapping relationship to the DRB can be defined by the access network device itself and then the priority settings between the two. Configuration mode categories may be different for all access network devices. In other words, the access network device can define the priorities between the two categories of configuration modes for the UE. So, if the priority settings between the user plane configuration mode and the control plane configuration mode are different for the first access network device and the second access network device, the second access network device access can determine, according to the implantation of
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33/76 algorithm, the possibility to update the priorities between the two categories of configuration modes for the UE.
[0111] Optionally, the second access network device can alternatively update the priority settings between the two categories of configuration modes and update the QoS flow mapping relationship for the DRB to the UE. Additionally, the second access network device includes, in the message used to respond to the service transfer request, the second mapping relation configured for the UE and the priorities defined by the second access network device between the two categories of access modes. configuration. After receiving the message used to respond to the service transfer request, the first access network device notifies the UE of the priorities that are between the user plane configuration mode or the control plane configuration mode and that are defined the second access network device and the second configured mapping relation. After receiving the information, the UE updates the priority settings between the user plane configuration mode and the control plane configuration mode and, after successfully accessing the second access network device, the UE sends, based on the second mapping relationship, an uplink data packet from the QoS stream in the DRB of the second access network device corresponding to the QoS stream.
[0112] For example, the configuration information includes an indication (namely, the eighth indication information) of the reflective characteristic of the DRB of the first access network device, and the second access network device can define the reflective characteristic of the DRB of the second access network device with reference to the eighth indication information. In that case, the second access network device can configure the QoS flow mapping relationship to the DRB of the second access network device to the UE in user plan mode. The second access network device additionally includes information indicating the reflective characteristic of the DRB of the second access network device in the message used to respond to the service transfer request. After receiving the message used to respond to the service transfer request, the first access network device notifies the UE
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34/76 of the indication information defined by the second access network device for the DRB reflective characteristic of the second access network device and the second mapping relationship configured by the second access network device for the UE in the plan mode user. After receiving the information, the UE sends, with reference to the reflective characteristic of the DRB of the second access network device and the mapping relation that is from the QoS flow to the DRB of the second access network device and that is configured in the mode user plan, a QoS uplink data packet in the DRB of the second access network device that corresponds to the QoS flow. It should be noted that, in general, the mapping relationship that is of the flow of QoS for the DRB of the second access network device and that is configured by the second access network device for the UE in user plane mode can take effect only when the DRB of the second access network device has the reflective characteristic .
[0113] It should be noted that, after the UE successfully accesses the second access network device, if there is an uplink QoS flow for which no corresponding DRB is configured, the UE sends a data packet from the QoS stream in a standard carrier (default DRB) of the second access network device. Alternatively, the UE can initiate an RRC request for the second access network device, to request the second access network device to configure a DRB for the QoS flow. Possibly the second network device access includes, in addition, a standard DRB ID of the second access network device in the message used to respond to the service transfer request, and can additionally in standard DRB session information, where the session information includes an identity of the session.
[0114] In the QoS flow processing method provided in this modality, the first access network device sends the message used for the service transfer request to the second access network device, and the message used for the service request Service transfer includes QoS flow configuration information on the first access network device, so that the second access network device
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35/76 access can configure the QoS flow mapping relationship to the DRB of the second access network device to the UE based on the configuration information, and accept the UE's QoS flow. Therefore, in a service transfer process, a reliable QoS service can be provided for a user, and the continuity of a user service can be guaranteed.
[0115] Figure 4 is a schematic flowchart of a QoS flow processing method, according to one embodiment of this request. As shown in Figure 4, the QoS flow processing method, provided in this mode, includes the following steps:
[0116] S401. A first access network device sends a message used for a service transfer request to a second access network device.
[0117] S402. The second access network device processes a UE QoS stream based on the message used for the service transfer request.
[0118] S403. The second access network device sends a message used to respond to the service transfer request to the first access network device.
[0119] S404. The first access network device sends a PDCP SN status report to a second access network device to which the QoS flow is mapped to the second radio access network device.
[0120] S405. The first access network device sends a downlink data packet to the second access network device that needs to be forwarded.
[0121] S406. The first access network device sends a message to the UE used to indicate transfer of service.
[0122] S407. The UE accesses the second access network device based on the message used to indicate the transfer of service, and performs QoS flow transmission.
[0123] It should be noted that the PDCP SN status report for the DRB of the first access network device to which the QoS flow is mapped indicates a sending status, through the first access network device, of a data packet that succeeds a data packet sent from
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36/76 successful way, for example, a send success or a send failure. Successful sending means that a confirmation from the UE about successful receipt has been obtained. However, all data packets that precede the data packet sent successfully are considered to be sent successfully or time exceeds and there is no need to be sent.
[0124] Based on the modality shown in Figure 3, in an optional deployment, the first access network device can alternatively notify the second access network device of a reflective QoS rule feature of a QoS flow using a data forwarding process.
[0125] For example, in the data forwarding process, the first access network device forwards a downlink data packet to the second access network device that needs to be forwarded. Specifically, the first access network device routes the downlink data packet to the second access network device by establishing a routing tunnel. An indication of the reflective QoS rule characteristic of the QoS stream is included in an encapsulation header of a data packet, for example, in a GTP-U header of a data routing tunnel.
[0126] Optionally, the indication can be independent indication information, or it can be an implicit indication implanted using other information. For example, a QoS flow ID is included in an encapsulation header for a data packet. Then, the QoS flow ID can be used to implicitly indicate the reflective QoS rule characteristic of the QoS flow.
[0127] Additionally, the downlink data packet that needs to be forwarded includes a data packet to which an SN PDCP is allocated, but whose receipt is not confirmed by the UE, and a new data packet from a main network for which no SN PDCP is allocated. Different referral solutions can be used for different parts of a forward link data packet.
[0128] In a deployment solution, for a data package
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37/76 for which an SN PDCP is allocated, a QoS flow ID is included in a data packet encapsulation header to indicate, implicitly, that the data packet has the reflective QoS rule characteristic. data packet for which no SN PDCP is allocated, independent indication information is included in a data packet encapsulation header to indicate that the data packet has the reflective QoS rule characteristic.
[0129] In another deployment solution, for a data packet to which a PDPC SN is allocated, referral information can be included in the PDCP SN status report to indicate that a data packet to be forwarded has the characteristic reflective of QoS rule.
[0130] In the QoS flow processing method, provided in this modality, a target access network device is notified of a reflective QoS rule characteristic of a QoS flow using a data forwarding process ) or by including indication information in a PDB SN status report message from a DRB of a source access network device to which the QoS flow is mapped, so that the target access network device can configure a mapping relationship from the QoS stream to a DRB from the target access network device to the UE based on the reflective QoS rule characteristic of the QoS stream, and accept the QoS stream from the UE. Therefore, in a service transfer process, a reliable QoS service can be provided for a user and the continuity of a user service can be guaranteed.
[0131] It should be noted that the QoS flow processing method, provided in this modality of this order, can be applied, additionally, to a multiple connectivity scenario. The QoS stream from the UE migrates from a master access network device to a secondary access network device, or from a secondary access network device to a master access network device. The implementation principles and processes are similar, and the details are not described again in this document.
[0132] In this modality, the message used for the service transfer request is used to request the service transfer from the
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38/76 first access network device to the second access network device. The message used for the service transfer request corresponds to an automatic change request message in an automatic change scenario and messages in the multiple connectivity scenario, such as a request to add a secondary access network device, a secondary access network device change request message and a secondary access network device release request message.
[0133] In this modality, the message used to reply to the service transfer request is used to reply to the message which is used for the service transfer request and which is used to request the service transfer from the first access network device for the second access network device. The message used to respond to the service transfer request corresponds to an automatic change request confirmation message in the automatic change scenario and messages in the multiple connectivity scenario, such as a network device addition request confirmation message. secondary access, a secondary access network device modification request confirmation message, and a secondary access network device release request confirmation message.
[0134] Figure 5 is a schematic flowchart of a QoS flow processing method, according to one embodiment of this request. As shown in Figure 5, the QoS flow processing method, provided in this mode, includes the following steps:
[0135] S501. An access network device obtains first information.
[0136] S502. The access network device sets up a mapping relationship from a QoS flow to a DRB of the access network device to UE based on the first information, in order to process the QoS flow from the UE.
[0137] Specifically, the access network device can obtain the first information using control plan signaling between the access network device and a main network, or the
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39/76 access network can obtain the first information using a user data packet between the access network device and the main network. For example, in an optional mode, the first indication is included in an encapsulation header of a downlink user data packet between the main network and the access network device.
[0138] In one possibility, the first information is used to indicate a reflective QoS rule characteristic of the UE QoS flow. The access network device receives the reflective QoS rule characteristic of the QoS stream using control plane signaling between the access network device and the main network, or the access network device can obtain the characteristic reflective of the QoS rule of the QoS flow using the user data packet between the access network device and the main network. For example, indication information is included in an encapsulation header of a downlink user data packet between the main network and the access network device, to indicate that the QoS flow data packet has the characteristic reflective QoS rule. A QoS flow ID is also included in a user data packet encapsulation header between the access network device and the main network, and the QoS flow ID indicates a QoS parameter of the QoS flow, and can also identify the QoS flow.
[0139] In another possibility, the access network device already has a QoS flow that has the reflective characteristic of the QoS rule, and the first information is used to instruct the exclusion of the reflective characteristic of the QoS rule from the QoS flow. of the UE. Specifically, the primary network can notify the access network device to disable a reflective QoS rule feature for a QoS flow.
[0140] In an optional mode, the access network device receives, using the control plane signaling between the access network device and the main network, a command to disable the reflective QoS rule characteristic of the flow of QoS.
[0141] In another optional mode, the indication information is included in an encapsulation header of a downlink user data packet between the main network and the access network device, to instruct to disable the reflective rule feature package QoS
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40/76 QoS flow data.
[0142] Additionally, the access network device may include, in a downlink data packet, an indication to disable the reflective QoS rule feature, to instruct the UE to disable the reflective QoS rule feature of the stream of QoS. The UE excludes a QoS rule that is from the QoS flow and which is obtained using the reflective feature. Optionally, the access network device can further instruct the UE in a user plan mode to disable a QoS rule mapping feature of a QoS stream. Specifically, the access network device access can instruct the UE, using a user plan control data unit, to disable the QoS rule mapping feature of the QoS stream. For example, a PDCP control PDU is used to indicate a group QoS flow ID. The UE receives the PDCP control PDU; and, for a QoS flow from the QoS flow ID group, the UE excludes a QoS rule that is from the QoS flow and which is obtained using the reflective feature.
[0143] Additionally, the main network can notify the UE that the reflective feature of the QoS rule has been disabled. The main network can notify, using a NAS message, the UE that the reflective QoS rule feature of the QoS stream has been disabled. The UE receives the deactivation command, and ends the QoS rule that is generated based on the reflective characteristic. The main network can also implicitly notify, by configuring a new QoS rule of the QoS flow, that the reflective QoS rule characteristic of the QoS flow has been disabled.
[0144] Additionally, the reflective QoS rule feature of the QoS stream has been disabled, and the access network device needs to configure the QoS flow mapping relationship for the DRB of the access network device to the UE. In an optional mode, the access network device can configure the QoS flow mapping relationship to the DRB of the access network device to the UE using RRC signaling. When sending uplink data, the UE sends, based on a QoS flow obtained by a NAS and the mapping relationship that is from the QoS flow to the DRB of the access network device and that is configured by an AS, an uplink data packet in a corresponding DRB.
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41/76 [0145] If the QoS flow has the reflective QoS rule characteristic, the access network device can additionally configure the QoS flow mapping relationship to the DRB of the access network device for the UE using the QoS rule reflective feature of the QoS flow in a user plane configuration mode. For example, the access network device sends a downlink data packet from a QoS 1 stream into a DRB 1, and indicates to the UE that the QoS 1 stream has the reflective characteristic. The UE receives the data packet from the QoS stream 1 in DRB 1; performs inversion in a tuple of 5 of a packet header of the downlink data packet to obtain an uplink TFT, where a QoS index value that corresponds to the TFT is the QoS flow 1; and maps a data packet from the uplink QoS flow 1 to the DRB 1. The UE can obtain a mapping relation from the QoS flow 1 to the DRB 1, namely, a mapping relation from the link QoS flow upward to the DRB in this way, and store the mapping interface.
[0146] It should be noted that the reflective characteristic of the QoS rule of the QoS flow is only a means by which the NAS stratum obtains a TFT and a QoS parameter from the QoS flow. The UE learns, using the DRB 1 in which a data packet from a downlink QoS 1 stream is located, that the uplink QoS 1 stream is mapped to DRB 1, and this can be considered as a reflective feature of a data mapping relationship a QoS flow to a DRB. The reflective feature of the QoS flow mapping relationship to the DRB can be configured by the access network device. Specifically, the access network device can notify the UE using RRC signaling, or notify the UE using a downlink user plan data package. Specifically, information that indicates that the QoS flow has the reflective characteristic of the QoS flow mapping relationship to the DRB is included in a packet header of a downlink data packet.
[0147] In addition, it should be noted that the access network device can additionally change the reflective characteristic of a QoS flow and of a QoS flow mapping relationship for a DRB
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42/76 of the access network device. For example, the access network device can notify, using RRC signaling or a downlink user plan data packet, the UE to disable the reflective characteristic that is of the QoS flow and that is of the relationship of mapping the QoS flow to the DRB of the access network device.
[0148] It is worth mentioning that, in a service transfer process, a source access network device can notify, using a message used for a service transfer request, a target access network device about the possibility of a UE QoS stream having a reflective feature of a QoS stream mapping relationship to a DRB of the source access network device. The target access network device can update or configure, using an algorithm of the target access network device, a reflective feature of a QoS flow mapping relationship to a DRB of the target access network device, and notify the source access network device using a message used to respond to the service transfer request, and the source access network device notifies the UE using a message used to indicate service transfer. After accessing the target access network device, the UE can determine a DRB to send a data packet from an uplink QoS stream. If there is an uplink QoS stream for which no corresponding DRB is configured, the UE can send, on a standard DRB of the target access network device, a QoS stream data packet for which no mapping relationship of the QoS flow to a DRB is configured.
[0149] In the QoS flow processing method, provided in this mode, the access network device can configure the QoS flow mapping relationship for the DRB of the access network device to the UE based on the reflective characteristic of QoS rule of the QoS flow, thereby ensuring that the UE's QoS flow is transmitted effectively, providing a more reliable QoS service to a user and ensuring the continuity of a user service.
[0150] A service flow (QoS flow) is mapped to a DRB, a mapping relationship can be determined by an RAN according to an algorithm, and the mapping relationship can change. In a process of
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43/76 changing a mapping relationship from a QoS stream to a DRB, a data packet that is from the QoS stream and that is sent in a source DRB can arrive at a higher protocol layer before a data packet which is from the QoS flow and which is sent in a new DRB, leading to out of order delivery. One form of this order additionally provides a solution to resolve out-of-order delivery.
[0151] Figure 6 is a schematic architectural diagram of an aerial interface protocol stack between a radio access network device and UE. As shown in Figure 6, on a 5G-RAN, a layer of user plan protocol is introduced above a stack of PDCP protocols. This protocol layer is responsible for functions, such as routing a QoS flow to a DRB, adding a QoS flow ID to a user plan packet header, and the like. The protocol layer can be defined as a Packet Data Association Protocol, PDAP. An entity in the protocol stack is configured based on a PDU session. Specifically, a PDAP protocol entity is established for a PDU session.
[0152] In solution 1 provided in this modality to resolve the out-of-order transmission, the PDAP layer sends an end marker (EM) indication, and there is an interval between sending data packets.
[0153] A PDAP of a first device determines to change a mapping of a first service flow from QoS 1 to a DRB 1 to a mapping of the QoS 1 to a DRB 2 flow. QoS flow 1, and a second device is an end device for receiving QoS flow 1. The PDAP entity of the first device sends a termination marker, where the termination marker indicates the end of sending data packets from the QoS flow 1. In other words, the first device no longer sends data packets from QoS flow 1 on DRB 1. The end marker can be sent in the form of a data packet or a control data unit , in which a QoS 1 stream identity is included. Additionally, the QoS flow termination marker can be a plurality of packets of
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44/76 data.
[0154] If a PDAP entity from the second device receives ο the QoS 1 flow stop marker, the second device notifies the first device that the QoS 1 flow stop marker is received. If the first device receives information that is notified by the second device and that indicates that the second device receives the QoS 1 flow end marker, the first device maps the QoS 1 flow to DRB 2, and begins to send a packet data from the QoS flow 1 in DRB 2.
[0155] Thus, the second device first receives a data packet from the QoS stream 1 in DRB 1 and then receives a data packet in DRB 2. A PDCP entity from DRB 1 of the second device delivers PDCP SDUs in order to an upper layer, and a PDCP entity of the DRB 2 of the second device delivers PDCP SDUs in order to the upper layer, thereby preventing out-of-order delivery of data packets from the QoS stream 1.
[0156] Additionally, the mapping of the QoS 1 stream to DRB 1 is changed to the mapping of the QoS 1 stream to DRB 2. If DRB 1 is released before the transmission of a QoS stream data packet 1 is complete, a packet loss may occur. In this mode, if the first device receives the information that is notified by the second device and that indicates that the second device receives the QoS 1 flow end marker, the first device maps the QoS 1 flow to DRB 2, and begins sending a QoS 1 stream data packet on DRB 2. The first device may notify that DRB 1 is no longer used to send a QoS 1 stream data packet. If DRB 1 is not used to transmit a data packet from any QoS stream, DRB 1 can be released.
[0157] The first device can be UE or a base station, and the second device can be UE or a base station. If the first device is UE, the second device imposes a mapping relationship from the QoS flow 1 to DRB 1 or DRB 2, and changes a mapping relationship that is from a QoS flow to a DRB and that is the flow of QoS 1.
[0158] In solution 2 provided in this mode to resolve out of order delivery, the PDAP layer sends a marker indication
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45/76 end marker, and there is no interval between sending data packets.
[0159] A PDAP of a first device determines the change from a mapping of a first service flow from QoS 1 to a DRB 1 to a mapping of the QoS flow 1 to a DRB 2. The first device is a final device transmission of the QoS flow 1, and a second device is an end device for receiving the QoS flow 1. The PDAP entity of the first device sends a termination marker, where the termination marker indicates the end of sending packets of data from the QoS flow 1. In other words, the first device no longer sends a data packet from the QoS flow 1 on the DRB 1. The end marker can be sent in the form of a data packet or a data unit control, in which a QoS 1 flow identity is included. Additionally, the QoS flow termination marker can be a plurality of data packets. The PDAP entity of the first device begins to send a data packet from the QoS stream 1 in DRB 2.
[0160] A PDAP entity from the second device receives a data packet from the QoS flow 1 in DRB 1 and, if the PDAP entity receives the end marker from the QoS flow 1, it indicates that the transmission of the data packet of QoS 1 flow in DRB 1 ends. The PDAP entity of the second device also receives a data packet from the QoS stream 1 in DRB 2. To ensure orderly delivery of data packets from the QoS stream 1, the PDAP first delivers the data packet from the QoS stream 1 QoS 1 received at DRB 1 and, after receiving the end marker, delivers the data packet from the QoS 1 stream received at DRB 2.
[0161] Thus, the second device first receives a data packet from the QoS stream 1 in DRB 1 and then receives a data packet in DRB 2. A PDCP entity from DRB 1 of the second device delivers PDCP SDUs in order for an upper layer, and a DRCP 2 PDCP entity from the second device delivers PDCP SDUs in order to the upper layer. The PDAP entity of the second device first delivers to the upper layer protocol entity the QoS stream data packet 1 received on DRB 1, and after receiving the end marker, delivers the data stream stream packet. QoS 1 received in DRB 2, thereby avoiding out-of-order delivery of data packets from the data stream
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QoS 1.
[0162] Additionally, the PDAP protocol entity can deliver a data packet to the upper layer based on a granularity of the QoS flow. Specifically, for data packets received from different QoS flows, the data packets need to be delivered in order to the upper layer based on a sequence of data packets from the QoS streams. For example, if the PDAP protocol entity additionally includes data packets from a QoS 2 stream, the The PDAP protocol can deliver data packets based on a sequence of data packets in the QoS stream 2, instead of being limited to an order status or delivery status of the data packets in the QoS stream 1.
[0163] Additionally, the mapping of the QoS 1 stream to DRB 1 is changed to the mapping of the QoS 1 stream to DRB 2. If DRB 1 is released before the transmission of a QoS stream data packet 1 is complete, a packet loss may occur. In this modality, if the first device receives the information that is notified by the second device and that indicates that the second device receives a QoS 1 flow end marker, the first device maps the QoS 1 flow to DRB 2, and begins sending a QoS 1 stream data packet on DRB 2. The first device may notify that DRB 1 is no longer used to send QoS 1 stream data packets. If DRB 1 is not used to transmit a packet data from any QoS stream, DRB 1 can be released.
[0164] In solution 3 provided in this modality to resolve out-of-order delivery, a PDAP layer sends an end marker indication to a PDCP layer, and there is no interval between sending data packets.
[0165] Figure 7 is a schematic diagram showing a change in a mapping relationship from a QoS flow to a DRB; As shown in Figure 7, data packets from a QoS 1 stream are first transmitted on a DRB 1, and are then transmitted on a DRB 2 after the service stream is remapped to a DRB. A PDCP 1 entity of a final transmission device and a PDCP 2 entity of the final transmission device separately allocate PDCP SNs to
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47/76 QoS flow data packets 1. A packet 11, a packet 12, a packet 52 and a packet 53 are data packets from the QoS stream 1. Packet 11 and packet 12 are data packets received by a PDCP 1 entity from a final receiving device, and packet 52 and packet 53 are data packets received by a PDCP 2 entity from the final receiving device. A packet 51 and a packet 54 are data packets from a QoS 2 stream.
[0166] When transferring the QoS stream 1 from DRB 1 to DRB 2, the final transmitting device defines a termination marker, to indicate the final data transmission device of flow 1 in DRB 1. The termination marker can be a PDCP SN number or other identity that indicates the end of stream 1 data. If a new protocol layer PDAP protocol entity from the end device of transmission determines to change a mapping from stream 1 to DRB 1 to a mapping from stream 1 to DRB 2, the PDAP protocol entity of the transmitting end device notifies a new protocol layer PDAP protocol entity of the end device receiving indication information indicating that the mapping relationship is that of the QoS flow to the DRB and that of flow 1 is changed. The indication information that indicates that the QoS flow mapping relationship to the DRB is changed includes a QoS flow ID 1 and an identity of a new DRB to which the QoS flow 1 is mapped, for example, the DRB 2.
[0167] The new protocol layer entity of the final transmission device additionally notifies a lower layer protocol entity, for example, a PDCP entity, of a QoS 1 stream data packet termination marker in DRB 1, and can notify the PDCP entity using an interlayered primitive. The PDCP protocol entity of the final transmitting device may define a PDCP layer termination marker, for example, based on the QoS 1 flow data termination marker notified by the new protocol layer, or the entity PDCP protocol number of the transmitting end device can set a PDCP layer termination marker according to status feedback from the receiving end device. The final transmission device can additionally define a timer and
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48/76 notify the receiving end device. If the receiving end device does not send feedback after the timer expires, the transmitting end device sets a termination marker and sends the termination marker to the final receiving device. The receiving end device can be notified of the data packet sending end marker by including the end marker in a header of a user plan data packet, or by using a control protocol data unit . The PDCP protocol entity of the final transmission device sends the termination marker to an upper layer PDAP protocol entity of the final transmission device, for example, using an interlayered primitive.
[0168] Additionally, the PDAP entity of the final transmission device may start sending data in a new DRB after receiving referral information indicating that the PDCP entity of the final transmission device has successfully sent a packet old data base. Successful sending of the old data packet means that the PDCP entity has successfully sent a data packet from the QoS stream 1 to the PDCP entity of the receiving end device, or the sending of the packet from data exceeds the time limit.
[0169] The PDCP entity of the receiving end device receives the end marker for the QoS flow 1, and sends the end marker to the new protocol layer PDAP protocol entity. The receiving end device's PDAP protocol entity receives a QoS 1 stream data packet from the receiving device's PDCP 1 protocol entity, and receives a stream 1 data packet from the receiving entity PDCP 2 protocol of the receiving end device. The PDAP protocol entity of the receiving end device performs an ordering function. Specifically, the PDAP protocol entity first delivers in order, to an upper layer, the QoS 1 flow data packets that are received from the PDCP 1 protocol entity before the end marker and then delivers in order, for the upper layer, the data packets of the QoS flow 1 that are received from the PDCP protocol entity 2. That is, packet 11 and packet 12 are first delivered and then packet 52 and the 53 package is delivered.
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In addition, the new protocol layer PDAP protocol entity receives the QoS 2 stream data packets from the PDCP 2 protocol entity, and the new protocol layer PDAP protocol entity can deliver the data to a higher layer based on a QoS 2 flow packet delivery rule, instead of being limited by ordering sequence numbers of the QoS 1 flow data packets. For example, the QoS 2 is transmitted only at the PDCP protocol entity, and QoS can deliver packet 51 and packet 54 to the upper protocol layer. However, since the PDAP protocol entity must wait to receive packet 12 of the QoS stream 1, packet 52 may still be in a temporary storage of the PDAP protocol entity of the receiving end device. In other words, the PDCP layer can deploy orderly delivery based on a sequence of a QoS flow, instead of orderly delivery to an upper layer based entirely on an order of PDCP SNs.
[0170] Additionally, if the PDAP protocol entity ordering function is deployed at the PDCP layer, PDCP 2 delivers packet 52 and packet 53 after PDCP 1 finishes delivering packet 11 and packet 12. From likewise, the delivery of a stream 2 data packet at PDCP 2 is not affected by a stream 1 data packet ordering process.
[0171] It should be noted that the data packets in the previous process method can be uplink data packets, or they can be downlink data packets. This is not limited in this mode of this application.
[0172] In another embodiment of this request, a method for configuring the PDAP protocol layer is additionally provided.
[0173] As shown in Figure 6, on a 5G-RAN, a user plan protocol layer is introduced above a stack of PDCP protocols. This protocol layer is responsible for functions, such as routing a QoS flow to a DRB, adding a QoS flow ID to a user plan packet header, and the like. The protocol layer can be defined as a PDAP. An entity in the protocol stack is configured based on a PDU session. So
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50/76 specific, a PDAP protocol entity is established for a PDU session. The PDAP is additionally responsible for delivering, based on the session, data packets received on a DRB 1 and a DRB 2. For example, an EU PDAP entity delivers a received downlink data packet to an instance of application layer that corresponds to the session, and a PDAP entity from a radio access network device delivers a received uplink data packet to a tunnel, where the tunnel corresponds to the session and is connected to a network element main network user plan.
[0174] The UE can start establishing a PDU session. During a session establishment process, the radio access network device establishes a standard DRB and a PDAP entity for the UE, and can establish a dedicated DRB. When needing to send uplink data, an UE access layer (AS) sends, based on QoS flow ID information provided by a non-access layer (NAS) for each uplink data packet and a relationship mapping which is from a QoS flow ID to a DRB and which is stored by the AS stratum, each uplink data packet in a corresponding DRB. If the NAS layer does not provide QoS flow ID information for a particular uplink data packet, the UE layer AS sends the uplink data in a standard DRB of a corresponding PDU session. The radio access network device can establish a DRB for a QoS flow from the UE, and notify the UE of a QoS flow mapping relationship to the DRB. The UE transmits a QoS flow data packet in the corresponding DRB based on the QoS flow mapping relationship to the DRB.
[0175] The radio access network device notifies the UE of configuration information for a DRB and configuration information for a PDAP by configuring dedicated radio resource configuration information for the UE. The radio access network device can additionally add, modify, or delete DRB configuration information and PDAP configuration information by configuring dedicated radio resource configuration information.
[0176] This modality of this application provides the different modes of
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51/76 optional radio feature settings below.
[0177] In a first optional radio resource configuration mode, the radio access network device sends dedicated radio resource configuration information to the UE. The dedicated radio resource configuration information includes DRB configuration information, and the DRB configuration information includes DRB identity information, and additionally includes at least one of the following: identity information from a session PDU that corresponds to the DRB, indication information that indicates whether the DRB is a standard DRB, and DRB protocol layer configuration information. The PDU session that corresponds to the DRB is a PDU session to which a QoS flow included in the DRB belongs. A type of standard DRB means that DRB is a standard DRB. The DRB protocol layer configuration information is parameter configuration of at least one of the following: a DRB PDCP layer, a DRB RLC layer, and a DRB logical channel.
[0178] Additionally, dedicated radio resource configuration information includes configuration information for a PDAP protocol layer, and configuration information for the PDAP protocol layer includes at least one of the following: identity information for a PDAP protocol entity, identity information from a PDU session that corresponds to the PDAP protocol entity, identity information from a standard DRB, and a mapping relationship between a QoS flow and a DRB. Standard DRB identity information is used to indicate a standard DRU identity for the PDU session that corresponds to the PDAP protocol entity.
[0179] The UE receives the DRB configuration information and the PDAP configuration information that are configured by the radio access network device, and can learn, through a correspondence between the PDU session and the DRB and a correspondence between the PDU session and the PDAP, about a correspondence between the PDAP and the DRB. The UE can learn about a standard DRB for each session, based on the referral information that is in the DRB configuration information and that indicates whether the DRB is a standard DRB or the identity information of the standard DRB in
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52/76 PDAP configuration information.
[0180] For example, a DRB 1 and a DRB 2 correspond to a session 1, and a PDAP 1 corresponds to session 1, so PDAP 1 corresponds to DRB 1 and DRB 2. PDAP 1 is responsible for mapping flows of QoS in session 1 for DRB 1 and DRB 2, and PDAP 1 is also responsible for adding QoS flow IDs in data packets mapped to DRB 1 and DRB 2.
[0181] For example, a signaling element for configuring a radio resource is:
DRB add or modify {
DRB id, namely, an expression of the DRB's identity information;
DRB Session id, namely, an expression of the PDU session identity information that corresponds to the DRB;
default DRB indicator, namely, an expression of the indication information that indicates whether the DRB is the standard DRB;
Another protocol configuration;
}
PDAP add or modify {
PDAP id, namely, an expression of the identity information of the PDAP protocol entity;
Session id, namely, an expression of the PDU session identity information that corresponds to the PDAP protocol entity;
default DRB id, namely, an expression of the identity information of the standard DRB;
Flow to DRB mapping configuration, namely, an expression of the mapping relationship between the QoS flow and the DRB;
} [0182] In a second optional radio resource configuration mode, the radio access network device sends dedicated radio resource configuration information to the UE. The information
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53/76 dedicated radio resource configuration includes DRB configuration information, and DRB configuration information includes DRB identity information, and additionally includes at least one of the following: identity information from a session PDU that corresponds to the DRB, DRB protocol layer configuration information, and PDAP protocol layer configuration information. The PDU session that corresponds to the DRB is a PDU session to which a QoS flow included in the DRB belongs. The DRB protocol layer configuration information is a parameter configuration of at least one of the following: a DRB PDCP layer, a DRB RLC layer, and a DRB logical channel. The configuration information for the PDAP protocol layer includes at least one of the identity information of a PDAP protocol entity and a mapping relationship between a QoS flow and a DRB.
[0183] In all DRBs that correspond to each session, the configuration information for only one DRB includes the configuration information for the PDAP protocol layer, and the DRB is a standard DRB.
[0184] The UE receives the DRB configuration information notified by the radio access network device, and can learn, through a correspondence between the session corresponding to the DRB and the configuration information of the PDAP protocol layer included in the DRB configuration information, that DRB is a type of standard DRB, and learn about a PDU session that corresponds to the PDAP.
[0185] For example, a DRB 1 and DRB 2 correspond to a session 1, and the DRB 1 configuration information includes configuration information from a PDAP 1, so DRB 1 is a standard session 1 DRB, and PDAP 1 corresponds to session 1. So PDAP 1 is responsible for mapping QoS flows in session 1 to DRB 1 and DRB 2. PDAP 1 is responsible for adding QoS flow IDs to data packets mapped to DRB 1 and DRDR 2.
[0186] For example, a signaling element for configuring a radio resource is:
DRB1 add or modify {
DRB id;
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Session id;
Another protocol configuration;
PDAP {
PDAP id;
Flow to DRB mapping configuration;};
}
DRB2 add or modify {
DRB id;
Session id;
} [0187] In an optional third radio resource configuration mode, the radio access network device sends dedicated radio resource configuration information to the UE. The dedicated radio resource configuration information includes configuration information for a session, and the configuration information for the session includes at least one of the following: a session identity, configuration information for a DRB, and configuration information for a session. PDAP protocol layer.
[0188] DRB configuration information is configuration information for a DRB that corresponds to the session, and includes at least one of the following: DRB identity information, indication information that indicates whether the DRB is a standard DRB, and DRB protocol layer configuration information. The DRB protocol layer configuration information is parameter configuration of at least one of the following: a DRB PDCP layer, a DRB RLC layer, and a DRB logical channel.
[0189] PDAP protocol layer configuration information includes at least one of the following: identity information from a PDAP protocol entity, standard DRB identity information, and a mapping relationship between a QoS flow and a DRB. Standard DRB identity information is used to indicate a standard DRB identity for a PDU session that corresponds to the PDAP protocol entity.
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55/76 [0190] 0 UE receives the configuration information which is from the session and which is configured by the radio access network device, to obtain the DRB configuration information corresponding to the session and the configuration information of the radio layer. PDAP protocol that correspond to the session. The UE can learn about a standard DRB for each session, based on the referral information that is used to indicate whether the DRB is the standard DRB and that is in the DRB configuration information or the standard DRB identity information in the PDAP configuration.
[0191] For example, a session 1 corresponds to a DRB 1 and a DRB 2, session 1 corresponds to a PDAP 1, so PDAP 1 corresponds to DRB 1 and DRB 2. So PDAP 1 is responsible for map QoS flows in session 1 to DRB 1 and DRB 2. PDAP 1 is also responsible for adding QoS flow IDs in data packets mapped to DRB 1 and DRB 2.
[0192] For example, a signaling element for configuring a radio resource is:
Session add or modify {
DRB id list;
PDAP configuration;
}
DRB add or modify {
DRB id;
Default DRB, optional
Another protocol configuration;
}
PDAP configuration {
PDAP id;
Flow to DRB mapping configuration;
default DRB id, namely, an expression of the identity information of the standard DRB;
}
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56/76 [0193] In an optional fourth radio resource configuration mode, the radio access network device sends dedicated radio resource configuration information to the UE. The dedicated radio resource configuration information includes configuration information for a session, and the configuration information for the session includes at least one of the session identity information and configuration information for a DRB.
[0194] DRB configuration information is a DRB configuration information that corresponds to the session, and includes at least one of the following: DRB identity information, configuration information for a PDAP protocol layer, and information for DRB protocol layer configuration. The DRB protocol layer configuration information is parameter configuration of at least one of the following: a DRB PDCP layer, a DRB RLC layer, and a DRB logical channel. The configuration information for the PDAP protocol layer includes at least one of the identity information of a PDAP protocol entity and a mapping relationship between a QoS flow and a DRB.
[0195] In all DRBs that correspond to each session, the configuration information for only one DRB includes the configuration information for the PDAP protocol layer, and the DRB is a standard DRB.
[0196] The UE receives the configuration information which is from the session and which is configured by the radio access network device, to obtain the DRB configuration information corresponding to the session and the configuration information of the PDAP protocol layer that correspond to the session. For example, a session 1 corresponds to a DRB 1 and a DRB 2, session 1 corresponds to a PDAP 1, so PDAP 1 corresponds to DRB 1 and DRB 2. So PDAP 1 is responsible for mapping flows of QoS in session 1 for DRB 1 and DRB 2. PDAP 1 is also responsible for adding QoS flow IDs in data packets mapped to DRB 1 and DRB 2. If the DRB 1 configuration information includes information PDAP 1 configuration options, then DRB 1 is a standard DRB.
[0197] For example, a signaling element to perform
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57/76 radio resource configuration is:
Session add or modify {
DRB id list;
}
DRB add or modify {
DRB id;
PDAP configuration, optional;
Another protocol configuration;
}
PDAP configuration {
PDAP id;
Flow to DRB mapping configuration;
} [0198] The radio resource configuration solution, provided in this mode, can be used by the radio access network device to configure a DRB and SRB in a primary cell or a secondary cell, and can be applied to a plurality of scenarios, such as an RRC process, an automatic change process, and the process of adding, releasing or modifying a multiple connectivity service.
[0199] Figure 8 is a schematic structural diagram of an access network device, according to one embodiment of this application. As shown in Figure 8, the access network device includes a QoS flow processing device. The QoS flow processing device can be deployed as part or all of the access network device (for example, a station using software, hardware or a combination of software and hardware. The device may include a receiving module 81, a configuration module 82 and a sending module 83.
[0200] Specifically, receiving module 81 is configured to receive a message used for a service transfer request, in which the message used for the service transfer request is sent by a first network device.
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58/76 access and includes configuration information for a QoS flow, and the configuration information includes at least one of the following: first indication information, where the first indication information indicates a reflective characteristic of the flow's QoS rule of QoS; second indication information, wherein the second indication information indicates a first mode in which the first access network device obtains the reflective QoS rule characteristic of the QoS flow; third indication information, wherein the third indication information indicates a second mode in which the first access network device notifies a user equipment UE of the reflective QoS rule characteristic of the QoS flow; fourth indication information, where the fourth indication information indicates a first mapping relationship that is from the QoS flow to a DRB data radio carrier of the first access network device and which is used when the UE sends the flow of information QoS for the first access network device; fifth indication information, where the fifth indication information indicates that a mode in which the first access network device configures the first mapping relationship for the UE is a user plan configuration mode or a plan configuration mode of control; sixth indication information, wherein the sixth indication information indicates priorities that are between the user plane configuration mode and the control plane configuration mode and which are defined by the first access network device for the UE; seventh indication information, where the seventh indication information indicates that the UE is about to release the mapping relationship that is from the QoS flow to the DRB of the first access network device and that is configured by the first network device access in user plan configuration mode; and eighth indication information, where the eighth indication information indicates a reflective characteristic of the DRB of the first access network device. Configuration module 82 is configured to configure a QoS flow mapping relationship for a DRB from a second access network device to the UE based on the configuration information. Sending module 83 is configured to send, to the first access network device, a message that is used to respond to the transfer request.
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59/76 service and includes the mapping interface configured by configuration module 82 for the UE, where the message used to respond to the service transfer request is a message used to indicate service transfer and sent by the first network device access to the UE, and the message used to indicate the transfer of service instructs the UE to map, based on the message used to indicate the transfer of service, the QoS flow of at least one service to the DRB of the second network device. transmission access.
[0201] Possibly, the configuration information includes the first indication information, and the configuration module 82 is specifically configured to send a downlink data packet that includes the first indication information in the DRB of the second device access network to which the QoS flow is mapped, so that the second access network device sets up the QoS flow mapping relationship to the DRB of the second access network device to the UE.
[0202] Possibly, the configuration information includes the third indication information, and the second way is: to notify the UE of the reflective QoS rule characteristic of the QoS flow including indication information in a downlink data packet , or notify the UE of the reflective QoS rule characteristic of the QoS stream using a user plane control data unit. Configuration module 82 is specifically configured to notify the UE of the reflective QoS rule characteristic of the QoS stream in the second mode indicated in the third indication information, so that the second access network device sets up the mapping interface of the QoS flow to the DRB of the second access network device to the UE.
[0203] Possibly, the configuration information additionally includes the second indication information, the first mode is: to obtain the reflective characteristic of the QoS rule of the QoS flow using control signaling between the first network device access network and a main network, or obtain the reflective QoS rule characteristic of the QoS stream using indication information included in a downlink user data packet between the first access network device and
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60/76 the main network, and the second indication information indicates that ο the first access network device obtains the reflective QoS rule characteristic of the QoS flow using the indication information included in the link user data packet downward between the first access network device and the main network. Configuration module 82 is specifically configured to notify the UE of the reflective QoS rule characteristic of the QoS stream in the second mode indicated in the third indication information, so that the second access network device sets up the mapping interface of the QoS flow to the DRB of the second access network device to the UE.
[0204] Possibly, the configuration information includes the seventh indication information, and the user plan configuration mode is: configure the QoS flow mapping relationship for the DRB to the UE using indication information included in a downlink data packet, or configure the QoS flow mapping relationship for the DRB to the UE using a user plane control data unit. Configuration module 82 is specifically configured to configure, for the QoS flow in the mapping relationship which is the QoS flow to the DRB of the first access network device and which is configured by the first access network device to the UE in user plane configuration mode, a second QoS flow mapping relationship to the DRB of the second access network device. Sending module 83 is specifically configured to send, to the first access network device, a message that is used to respond to the service transfer request and that includes the second mapping relationship.
[0205] Additionally, the configuration module is specifically configured to configure, for the QoS flow in the mapping relation that is from the QoS flow to the DRB of the first access network device and which is configured by the first access network device for the UE in user plan configuration mode, the second QoS flow mapping relationship to the DRB of the second access network device in user plan configuration mode or in configuration mode of control plane, in which the configuration plan mode
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61/76 control is: configure the QoS flow mapping relationship for the DRB to the UE using RRC radio resource control signaling.
[0206] Possibly, the configuration information includes the fourth indication information; and configuration module 82 is specifically configured to update the first mapping relationship based on the fourth indication information, to obtain a third mapping relationship from the QoS flow to the DRB of the second access network device. The sending module 83 is specifically configured to send, to the first access network device, a message that is used to respond to the service transfer request and that includes the third mapping relationship.
[0207] Possibly, the configuration information additionally includes the fifth indication information; and configuration module 82 is specifically configured to update the first mapping relation based on the fourth indication information and the fifth indication information, in order to obtain a fourth mapping relation of the QoS flow to the DRB second access network device. Sending module 83 is specifically configured to send, to the first access network device, a message that is used to respond to the service transfer request and that includes the fourth mapping relationship.
[0208] Possibly, the configuration information includes the sixth indication information; and the configuration module 82 is specifically configured to configure a fifth QoS flow mapping relationship to the DRB of the second access network device for the UE based on the sixth indication information. Sending module 83 is specifically configured to send, to the first access network device, a message that is used to respond to the service transfer request and that includes the fifth mapping relationship.
[0209] Possibly, configuration module 82 is configured, in a specific and additional way, to update the priorities between the user plane configuration mode and the control plane configuration mode in the UE, based on the sixth information of recommendation. Additionally, the sending module 83 is configured, in a specific and additional way, to send,
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62/76 for the first access network device, the message that is used to respond to the service transfer request and that includes the updated priorities between the user plan configuration mode and the control plan configuration mode.
[0210] Possibly, the message used to respond to the service transfer request includes at least one among the updated priorities between the user plan configuration mode and the control plan configuration mode and the fifth mapping relation.
[0211] Possibly, the configuration information includes the eighth indication information; and the configuration module 82 is specifically configured to: define a reflective characteristic of the DRB of the second access network device based on the eighth indication information; and configuring the QoS flow mapping relationship to the DRB of the second access network device to the UE in the user plan configuration mode. The user plan configuration mode is: configure the QoS flow mapping relationship to the DRB for the UE using indication information included in a downlink data packet, or configure the flow flow mapping relationship QoS for DRB for UE using a user plane control data unit. In addition, the message used to respond to the service transfer request additionally includes information indicating the reflective characteristic of the DRB of the second access network device.
[0212] During actual application, optionally, receiving module 81 can be additionally configured to receive a PDCP SN packet data convergence protocol sequence number status report that is sent by the first network device access to the DRB of the first access network device to which the QoS flow is mapped, where the PDCP SN status report includes the first indication information.
[0213] During real application, optionally, the receiving module 81 can be configured, additionally, to receive a downlink data packet that needs to be forwarded and that is sent by the first access network device, in which one downlink data packet encapsulation header that needs to be
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63/76 forwarded includes the first indication information.
[0214] The QoS flow processing device, provided in this mode, can perform the functions performed by the second access network device in the method modalities. The principles of implementation and their technical effects are similar, and the details are not described again in this document.
[0215] Figure 9 is a schematic structural diagram of an access network device, according to an embodiment of this application. As shown in Figure 9, the access network device includes a QoS flow processing device. The QoS flow processing device can be deployed as part or all of the access network device (for example, a station using software, hardware or a combination of software and hardware. The device may include a sending module 91 and a receiving module 92.
[0216] Specifically, sending module 91 is configured to send a message used for a service transfer request to a second access network device, where the message used for the service transfer request includes information about configuration of a QoS flow. The configuration information includes at least one of the following: first indication information, where the first indication information indicates a reflective QoS rule characteristic of the QoS flow; second indication information, wherein the second indication information indicates a first mode in which the first access network device obtains the reflective QoS rule characteristic of the QoS flow; third indication information, wherein the third indication information indicates a second mode in which the first access network device notifies user equipment UE of the reflective QoS rule characteristic of the QoS flow; fourth indication information, where the fourth indication information indicates a first mapping relationship that is from the QoS flow to a DRB data radio carrier of the first access network device and which is used when the UE sends the flow of information QoS for the first access network device; fifth indication information, where the fifth indication information indicates that a mode in which the first access network device
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64/76 configures the first mapping relationship for the UE is a user plane configuration mode or a control plane configuration mode; sixth indication information, wherein the sixth indication information indicates priorities that are between the user plane configuration mode and the control plane configuration mode and which are defined by the first access network device for the UE; seventh indication information, where the seventh indication information indicates that the UE is about to release the mapping relationship that is from the QoS flow to the DRB of the first access network device and that is configured by the first network device access in user plan configuration mode; and eighth indication information, where the eighth indication information indicates a reflective characteristic of the DRB of the first access network device. Receiving module 92 is configured to receive a message that is used to respond to the service transfer request, where the message includes the mapping relationship configured by the second access network device to the UE and is sent by the second access device. access network. Sending module 91 is additionally configured to send a message to the UE that is used to indicate service transfer and includes the mapping interface configured by the second network device accessing the UE, in which the message used for indicating the transfer of service instructs the UE to map, based on the indication message, the QoS flow of at least one service to the DRB of the second transmission access network device.
[0217] During real application, the first way can be: to obtain the reflective characteristic of QoS rule of the QoS flow using control signaling between the access network device and a main network; or it can be: obtain the reflective QoS rule characteristic of the QoS flow using indication information included in a downlink user data packet between the access network device and the main network.
[0218] During real application, the second way can be: notify the UE of the reflective QoS rule characteristic of the QoS flow by including indication information in a downlink data packet; or it can be: notify the UE of the reflective QoS rule characteristic of the QoS stream using a user plane control data unit.
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65/76 [0219] During real application, the user plan configuration mode can be: configure the QoS flow mapping relationship for the DRB to the UE using indication information included in a link data package descendant, or configure the QoS flow mapping relationship for the DRB to the UE using a user plane control data unit; and the control plan configuration mode can be: configure the QoS flow mapping relationship for the DRB to the UE using RRC radio resource control signaling.
[0220] During actual application, sending module 91 can be additionally configured to send a PDCP SN packet data convergence protocol sequence number status report to the DRB to the second access network device. of the first access network device to which the QoS flow is mapped, where the PDCP SN status report includes the first indication information.
[0221] During actual application, the sending module 91 can be additionally configured to send, to the second access network device, a downlink data packet that needs to be forwarded, in which an encapsulation header of the data packet downlink data that needs to be forwarded includes the first indication information.
[0222] The QoS flow processing device, provided in this mode, can perform the functions performed by the first access network device in the method modalities. The principles of implementation and their technical effects are similar, and the details are not described again in this document.
[0223] Figure 10 is a schematic structural diagram of an access network device, according to one embodiment of this application. As shown in Figure 10, the access network device includes a transceiver 101, a memory 102, a processor 103, and at least one communications bus 104.
[0224] Memory 102 stores a software program, memory 102 can include high-speed RAM memory, or non-volatile NVM memory, for example, at least one magnetic memory, and memory 102 can store multiple programs to deploy various functions
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66/76 processing and implement steps of a method in this modality. Processor 103 is coupled to memory 102, and communications bus 104 is configured to implement a communication connection between elements. Optionally, transceiver 101, in this embodiment, can be a radio frequency module or a baseband module of the access network device.
[0225] In this mode, processor 103 executes the software program in memory 102 to implement a corresponding function in the QoS flow processing method.
[0226] Specifically, transceiver 101 is configured to receive a message used for a service transfer request, in which the message used for the service transfer request is sent through a first access network device and includes configuration information for a QoS flow, and the configuration information includes at least one of the following: first indication information, where the first indication information indicates a reflective QoS rule characteristic of the QoS flow; second indication information, wherein the second indication information indicates a first mode in which the first access network device obtains the reflective QoS rule characteristic of the QoS flow; third indication information, wherein the third indication information indicates a second mode in which the first access network device notifies user equipment UE of the reflective QoS rule characteristic of the QoS flow; fourth indication information, where the fourth indication information indicates a first mapping relationship that is from the QoS flow to a DRB data radio carrier of the first access network device and which is used when the UE sends the flow of information QoS for the first access network device; fifth indication information, where the fifth indication information indicates that a mode in which the first access network device configures the first mapping relationship for the UE is a user plan configuration mode or a plan configuration mode of control; sixth referral information, where the sixth referral information indicates priorities that lie between the user plan configuration mode and the plan configuration mode
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67/76 control and that are defined by the first access network device for the UE; seventh indication information, where the seventh indication information indicates that the UE is about to release the mapping relationship that is from the QoS flow to the DRB of the first access network device and that is configured by the first network device access in user plan configuration mode; and eighth indication information, where the eighth indication information indicates a reflective characteristic of the DRB of the first access network device. Processor 103 is configured to configure a QoS flow mapping relationship to a DRB from the access network device to the UE based on the configuration information. Transceiver 101 is additionally configured to send a message used to respond to the service transfer request to the first access network device, where the message used to respond to the service transfer request is a message used to indicate service transfer. service and sent by the first access network device to the UE, and the message used to indicate the transfer of service instructs the UE to map, based on the message used to indicate the transfer of service, the QoS flow of at least one service to the DRB of the broadcast access network device.
[0227] Possibly, the configuration information includes the first indication information, and processor 103 is specifically configured to send a downlink data packet that includes the first indication information in the DRB of the network device. access to which the QoS flow is mapped, so that the second access network device sets up the QoS flow mapping relationship to the DRB of the access network device to the UE.
[0228] Possibly, the configuration information includes the third indication information, and the second way is: notify the UE of the reflective QoS rule characteristic of the QoS stream including indication information in a downlink data packet , or notify the UE of the reflective QoS rule characteristic of the QoS stream using a user plane control data unit. Processor 103 is specifically configured to notify the UE of the reflective QoS rule feature of the QoS stream in the second mode
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68/76 indicated in the third indication information, so that the second access network device sets up the QoS flow mapping relationship for the DRB of the access network device to the UE.
[0229] Possibly, the configuration information includes, in addition, the second indication information, the first way is: obtain the reflective characteristic of the QoS rule of the QoS flow using control signaling between the first network device access network and a main network, or obtain the reflective QoS rule characteristic of the QoS stream using indication information included in a downlink user data packet between the first access network device and the main network, and the second indication information indicates that the first access network device obtains the reflective QoS rule characteristic of the QoS flow using the indication information included in the downlink user data packet between the first network device access and the main network. Processor 103 is specifically configured to notify the UE of the reflective QoS rule characteristic of the QoS stream in the second mode indicated in the third indication information, so that the second access network device sets up the flow mapping interface of QoS to the DRB of the access network device for the UE.
[0230] Possibly, the configuration information includes the seventh indication information, and the user plan configuration mode is: configure the QoS flow mapping relationship for the DRB to the UE using indication information included in a downlink data packet, or configure the QoS flow mapping relationship for the DRB to the UE using a user plane control data unit. Processor 103 is specifically configured to configure, for the QoS flow in the mapping relationship which is from the QoS flow to the DRB of the first access network device and which is configured by the first access network device to the UE in user plan configuration mode, a second QoS flow mapping relationship to the DRB of the access network device. Transceiver 101 is specifically configured to send a message to the first access network device that is used to respond to the transfer request.
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69/76 service and that includes the second mapping relationship.
[0231] Additionally, processor 103 is specifically configured to configure, for the QoS flow in the mapping relationship which is the QoS flow to the DRB of the first access network device and which is configured by the first device network access to the UE in user plan configuration mode, the second QoS flow mapping relationship to the DRB of the access network device in user plan configuration mode or in plan configuration mode control, where the control plan configuration mode is: configure the QoS flow mapping relationship for the DRB to the UE using RRC radio resource control signaling.
[0232] Possibly, the configuration information includes the fourth indication information; and processor 103 is specifically configured to update the first mapping relationship based on the fourth indication information, in order to obtain a third mapping relationship from the QoS flow to the DRB of the access network device. Transceiver 101 is specifically configured to send, to the first access network device, a message which is used to respond to the service transfer request and which includes the third mapping relationship.
[0233] Possibly, the configuration information additionally includes the fifth indication information; and processor 103 is specifically configured to update the first mapping relation based on the fourth indication information and the fifth indication information, in order to obtain a fourth mapping relation from the QoS flow to the device's DRB access network. Transceiver 101 is specifically configured to send, to the first access network device, a message which is used to respond to the service transfer request and which includes the fourth mapping relationship.
[0234] Possibly, the configuration information includes the sixth indication information; and processor 103 is specifically configured to configure a fifth QoS flow mapping relationship to the DRB of the access network device for the UE based on the sixth indication information. Transceiver 101 sends, to the first device
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70/76 access network, a message that is used to respond to the service transfer request and that includes the fifth mapping relationship.
[0235] Processor 103 is possibly configured, in a specific and additional way, to update the priorities between the user plane configuration mode and the control plane configuration mode in the UE, based on the sixth indication information. In addition, transceiver 101 is configured, specifically and additionally, to send, to the first access network device, the message that is used to respond to the service transfer request and that includes the updated priorities between the mode of user plan configuration and control plan configuration mode.
[0236] Possibly, the message used to respond to the service transfer request includes at least one among the updated priorities between the user plan configuration mode and the control plan configuration mode and the fifth mapping relation.
[0237] Possibly, the configuration information includes the eighth indication information; and processor 103 is specifically configured to: define a reflective characteristic of the DRB of the second access network device based on the eighth indication information; and configure the QoS flow mapping relationship to the DRB of the second access network device to the UE in the user plan configuration mode, where the user plan configuration mode is: configure the mapping interface of the user plane. QoS flow to the DRB for the UE using indication information included in a downlink data packet, or configure the QoS flow mapping relationship for the DRB to the UE using a control data unit user plan. Transceiver 101 is specifically configured to send, to the first access network device, the message that is used to respond to the service transfer request and that includes information indicating the DRB reflective characteristic of the second network device of access and the mapping relationship that is from the QoS flow to the DRB of the second access network device and which is configured by the second access network device to the UE in user plan configuration mode.
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71/76 [0238] During actual application, transceiver 101 can be additionally configured to receive a PDCP SN packet data convergence protocol sequence number status report that is sent by the first access network device to the DRB of the first access network device to which the QoS flow is mapped, where the PDCP SN status report includes the first indication information.
[0239] During real application, the transceiver 101 can be configured, additionally, to receive a downlink data packet that needs to be forwarded and that is sent by the first access network device, in which an encapsulation header of the packet from downlink data that needs to be forwarded includes the first indication information.
[0240] The access network device, provided in this modality of this application, can carry out the method modalities. The principles of implementation and their technical effects are similar, and the details are not described again in this document.
[0241] Figure 11 is a schematic structural diagram of an access network device, according to one embodiment of this application. As shown in Figure 11, the access network device includes a transceiver 111, a memory 112, a processor 113, and at least one communications bus 114.
[0242] Memory 112 stores a software program, memory 112 can include high-speed RAM memory, or non-volatile NVM memory, for example, at least one magnetic memory, and memory 112 can store multiple programs to deploy various processing functions and implement steps of a method in this modality. Processor 113 is coupled to memory 112, and communications bus 114 is configured to implement a communication connection between elements. Optionally, transceiver 111, in this embodiment, can be a radio frequency module or a baseband module of the access network device.
[0243] In this mode, processor 113 executes the software program in memory 112 to implement the corresponding function in the QoS flow processing method.
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72/76 [0244] Specifically, transceiver 111 is configured to send a message used for a service transfer request to a second access network device, where the message used for the service transfer request includes information configuration of a QoS flow, and the configuration information includes at least one of the following: first indication information, where the first indication information indicates a reflective QoS rule characteristic of the QoS flow; second indication information, wherein the second indication information indicates a first mode in which the access network device obtains the reflective QoS rule characteristic of the QoS flow; third indication information, wherein the third indication information indicates a second mode in which the access network device notifies user equipment UE of the reflective QoS rule characteristic of the QoS flow; fourth indication information, where the fourth indication information indicates a first mapping relationship that is from the QoS stream to a DRB data radio carrier of the access network device and which is used when the UE sends the QoS stream for the access network device; fifth indication information, where the fifth indication information indicates that a mode in which the access network device configures the first mapping relationship for the UE is a user plan configuration mode or a plan configuration mode control; sixth indication information, wherein the sixth indication information indicates priorities that are between the user plane configuration mode and the control plane configuration mode and which are defined by the access network device for the UE; seventh indication information, where the seventh indication information indicates that the UE is about to release the mapping relationship that is from the QoS flow to the DRB of the access network device and which is configured by the access network device in the user plan configuration mode; and eighth indication information, where the eighth indication information indicates a reflective characteristic of the DRB of the access network device; receive a message that is used to respond to the service transfer request, where the message includes a mapping relationship configured by the second access network device to the
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UE and is sent by the second access network device; and send to the UE a message which is used to indicate transfer of service and which includes the mapping interface configured by the second access network device to the UE, where the message used to indicate the transfer of service instructs the UE to map, based on the indication message, the QoS flow from at least one service to a DRB of the second network device for transmission access.
[0245] During real application, the first way can be: to obtain the reflective characteristic of QoS rule of the QoS flow using control signaling between the access network device and a main network; or it can be: obtain the reflective QoS rule characteristic of the QoS flow using indication information included in a downlink user data packet between the access network device and the main network.
[0246] During actual application, the second mode can be: notify the UE of the reflective QoS rule characteristic of the QoS flow by including indication information in a downlink data packet; or it can be: notify the UE of the reflective QoS rule characteristic of the QoS stream using a user plane control data unit.
[0247] During real application, the user plan configuration mode can be: configure the QoS flow mapping relationship for the DRB to the UE using indication information included in a downlink data package, or configure the QoS flow mapping relationship for the DRB to the UE using a user plan control data unit; and the control plan configuration mode can be: configure the QoS flow mapping relationship for the DRB to the UE using RRC radio resource control signaling.
[0248] During actual application, transceiver 111 may be additionally configured to send a PDCP SN packet data convergence protocol sequence number status report to the DRB of the second access network device. access network device to which the QoS flow is mapped, where the PDCP SN status report includes the first indication information.
[0249] During real application, transceiver 111 can be additionally configured to send, to the second access network device, a
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74/76 downlink data packet that needs to be forwarded, wherein an encapsulation header of the downlink data packet that needs to be forwarded includes the first indication information.
[0250] The access network device, provided in this modality of this application, can carry out the method modalities. The principles of implementation and their technical effects are similar, and the details are not described again in this document.
[0251] In addition, one embodiment of this request additionally provides a plurality of communications systems.
[0252] A first communications system includes the access network device that includes the QoS flow processing device, provided in the mode shown in Figure 8, the access network device that includes the QoS flow processing device , provided in the embodiment shown in Figure 9, and UE.
[0253] A second communications system includes the access network device, provided in the mode shown in Figure 10, the access network device, provided in the mode shown in Figure 11, and UE.
[0254] The methods or algorithm steps described with reference to the content disclosed in this application can be deployed by hardware, can be deployed by a processor by executing a software instruction, or can be deployed using a computer program product . The software instruction can include a corresponding software module. The software module can be stored in RAM, flash memory, ROM memory, EPROM memory, EEPROM memory, registry, hard disk, removable hard disk, memory CD-ROM or storage media in any other forms well known in the art. A storage medium used as an example is attached to the processor, so that the processor can read the information from the storage medium, and can record information on the storage medium. Certainly, the storage media can be a part of the processor. The processor and storage media can be located on an ASIC. In addition, the ASIC can be located on user equipment. Certainly, the processor and storage media can exist as components
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75/76 discrete on user equipment.
[0255] A person skilled in the art must be aware that in one or more of the preceding examples, the functions described in this application can be implemented using hardware, software, firmware or any combination thereof. When this order is deployed by software, these functions can be stored on computer-readable media or transmitted as one or more instructions or code on the computer-readable media. Computer-readable media includes computer storage media and communications media, where communications media includes any media that enables a computer program to be transmitted from one place to another. The storage media can be any available media accessible to a general or dedicated computer.
[0256] In the embodiments of the present invention, the disclosed system, device and method can be implanted in other ways without departing from the scope of the present invention. For example, the described mode is just an example. For example, the unit or module division is just a logical function division and can be another division in actual deployment. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not realized. Units described as separate parts may or may not be physically separated, and parts displayed as units may or may not be physical units, may be located in one location, or may be distributed across a plurality of network units. Some or all of the modules can be selected according to real needs to achieve the objectives of the modalities solutions. A person of ordinary skill in the art can understand and implement the modalities of the present invention without creative efforts.
[0257] In addition, schematic diagrams illustrating the system, device, method and different modalities can be combined or integrated with other systems, modules, technologies or methods without departing from the scope of the present invention. In addition, the mutual couplings or direct couplings or communication connection displayed or discussed can be implemented via some interfaces. Couplings
Petition 870190080781, of 20/08/2019, p. 81/175
76/76 indirect or communication connections between devices or units can be implemented in electronic, mechanical or other ways.
[0258] It should be understood that a plurality of, in the modalities of this application, refers to two or more than two. The descriptions, such as first and second, in the modalities of this application, are only used to indicate and distinguish between objects, do not show a sequence, do not indicate that the modalities of this application limit a number of devices, and do not constitute any limitation to the modalities of this order.

权利要求:
Claims (29)
[1]
1. Communication processing method, applied to a terminal or to a terminal processor, FEATURED by the fact that it comprises:
start establishing a protocol data unit (PDU) session; and during a PDU session establishment process, obtaining configuration information that is from a radio data carrier (DRB) and that is sent by a radio access network device, where the DRB configuration information comprises DRB identity information, PDU session identity information, referral information that indicates whether the DRB is a standard DRB, and DRB protocol layer configuration information.
[2]
2. Method, according to claim 1, CHARACTERIZED by the fact that it additionally comprises:
when no corresponding DRB is configured for an uplink QoS flow, send data in the uplink QoS flow in the standard DRB, where the uplink QoS flow belongs to the PDU session.
[3]
3. Method, according to claim 1 or 2, CHARACTERIZED by the fact that the DRB configuration information is comprised in a DRB addition or deletion signaling unit sent by the radio access network device.
[4]
4. Communication processing method, applied to a radio access network device or to a radio access network device processor, CHARACTERIZED by the fact that it comprises:
establish a protocol data unit (PDU) session for a terminal; and during a PDU session establishment process, send configuration information from a radio data carrier (DRB) to the terminal, where the DRB configuration information comprises DRB identity information, PDU, indication information that indicates whether the DRB is a standard DRB, and DRB protocol layer configuration information.
Petition 870190080785, of 20/08/2019, p. 7/15
2/9
[5]
5. Method, according to claim 4, CHARACTERIZED by the fact that the DRB configuration information is comprised in a DRB addition or deletion signaling unit sent by the radio access network device.
[6]
6. Communication processing apparatus, in which the apparatus is a terminal or a terminal processor, CHARACTERIZED by the fact that it comprises:
a unit configured to initiate the establishment of a protocol data unit (PDU) session; and a unit configured to: during a PDU session establishment process, obtain dedicated radio resource configuration information sent by a radio access network device, where the dedicated radio resource configuration information comprises information from configuration of a radio data carrier (DRB), and the DRB configuration information comprises DRB identity information, PDU session identity information, referral information indicating whether the DRB is a standard DRB, and DRB protocol layer configuration.
[7]
7. Apparatus, according to claim 6, CHARACTERIZED by the fact that it additionally comprises:
a unit configured for: when no corresponding DRB is configured for an uplink QoS flow, send data in the uplink QoS flow in the standard DRB, where the uplink QoS flow belongs to the session of PDU.
[8]
8. Apparatus according to claim 6 or 7, CHARACTERIZED by the fact that the DRB configuration information is comprised of a DRB addition or deletion signaling unit sent by the radio access network device.
[9]
9. Communication processing apparatus, in which the apparatus is a radio access network device or a radio access network device processor, CHARACTERIZED by the fact that it comprises:
a unit configured to establish a protocol data unit (PDU) session for a terminal; and
Petition 870190080785, of 20/08/2019, p. 8/15
3/9 a unit configured to: during a PDU session establishment process, send configuration information from a radio data carrier (DRB) to the terminal, where the DRB configuration information comprises DRB identity information , PDU session identity information, referral information that indicates whether the DRB is a standard DRB, and DRB protocol layer configuration information.
[10]
10. Apparatus according to claim 9, CHARACTERIZED by the fact that the DRB configuration information is comprised of a DRB addition or deletion signaling unit sent by the radio access network device.
[11]
11. Communication processing method, CHARACTERIZED by the fact that the method comprises:
determine, by a first device, the change from a mapping of a quality of service (QoS) flow to a radio data carrier (DRB) to a mapping of the QoS flow to another DRB; and send, by the first device, a termination marker to a second device, where the termination marker indicates the end of sending a packet of data from the QoS stream in the DRB, the termination marker is sent in the form of a unit control data, and the control data unit carries a QoS flow identity; where the end marker indicates that a protocol layer entity of the first device stops sending the QoS flow data packet in the DRB, the protocol layer entity is configured to map the QoS flow to the DRB or to the another DRB, and the protocol layer entity corresponds to a protocol data unit (PDU) session.
[12]
12. Method, according to claim 11, CHARACTERIZED by the fact that it additionally comprises:
after sending the termination marker, change, from the first device, the QoS flow mapping to the DRB to the QoS flow mapping to the other DRB, and start sending a QoS flow data packet to the other DRB.
[13]
13. Method, according to claim 11 or 12, CHARACTERIZED by the fact that the first device is
Petition 870190080785, of 20/08/2019, p. 9/15
4/9 user, the second device is an access network device, and the determination, by a first device, to change a mapping from a QoS stream to a DRB to a mapping of the QoS stream to another DRB comprises:
receive, by the first device, RRC radio resource control configuration sent by the second device, where the RRC configuration indicates the mapping of the QoS flow to the other DRB; and determining, by the first device based on the RRC configuration, the change from the QoS flow mapping to the DRB to the QoS flow mapping to the other DRB.
[14]
14. Method according to claim 11 or 12, CHARACTERIZED by the fact that the first device is user equipment, the second device is an access network device, and the determination, by a first device, to change a mapping from a QoS flow to a DRB to a mapping of the QoS flow to another DRB comprises:
receive, by the first device, a user plan data packet sent by the second device, in which the user plan data packet carries indication information, and the indication information indicates the mapping of the QoS flow to the other DRB ; and determining, by the first device based on the indication information, the change from the QoS flow mapping to the DRB to the QoS flow mapping to the other DRB.
[15]
15. Communication processing method, CHARACTERIZED by the fact that the method comprises:
receive, by a second device in a radio data carrier (DRB), a data packet from a quality of service (QoS) stream mapped to the DRB; and when determining to switch from a QoS flow mapping to the DRB to a QoS flow mapping to another DRB, receive, by the second device in the DRB, an end marker sent by the first device and receive, by the second device, a data packet from the QoS stream in the other DRB, where the end marker indicates the end of sending the data packet from the QoS stream in the DRB, the end marker is sent
Petition 870190080785, of 20/08/2019, p. 10/15
5/9 in the form of a control data unit, and the control data unit carries a QoS flow identity; where the end marker indicates that a protocol layer entity of the first device stops sending the QoS flow data packet in the DRB, the protocol layer entity is configured to map the QoS flow to the DRB or to the other DRB, and the protocol layer entity corresponds to a protocol data unit (PDU) session.
[16]
16. Method, according to claim 15, CHARACTERIZED by the fact that the first device is user equipment, the second device is an access network device, and the method additionally comprises:
when determining the change from the QoS flow mapping to the DRB to the QoS flow mapping to the other DRB, send, through the second device, radio resource control (RRC) configuration to the first device, where the configuration RRC indicates the QoS flow mapping to the other DRB.
[17]
17. Method, according to claim 15, CHARACTERIZED by the fact that the first device is user equipment, the second device is an access network device, and the method additionally comprises:
when determining the change from the QoS flow mapping to the DRB to the QoS flow mapping to the other DRB, send, through the second device, a user plan data packet to the first device, where the data packet user plan information indication, and the indication information indicates the mapping of the QoS flow to the other DRB.
[18]
18. Method according to any one of claims 15 to 17, CHARACTERIZED by the fact that it additionally comprises:
deliver the QoS stream data packet received in the DRB first, and after receiving the termination marker, deliver the QoS stream data packet received in the other DRB after the second device.
[19]
19. First device, CHARACTERIZED by the fact that it comprises:
a unit configured to change a mapping from a quality of service (QoS) flow to a carrier
Petition 870190080785, of 20/08/2019, p. 11/15
6/9 radio data (DRB) for a mapping of the QoS flow to another DRB; and a unit configured to send an end marker to a second device, where the end marker indicates the end of sending a QoS flow data packet in the DRB, the end marker is sent in the form of a unit of control data, and the control data unit carries a QoS flow identity; where the end marker indicates that a protocol layer entity of the first device stops sending the QoS flow data packet in the DRB, the protocol layer entity is configured to map the QoS flow to the DRB, or for the other DRB, and the protocol layer entity corresponds to a protocol data unit (PDU) session.
[20]
20. First device, according to claim 19, CHARACTERIZED by the fact that it additionally comprises:
a unit configured for: after the end marker is sent, switch the QoS flow mapping to the DRB to the QoS flow mapping to the other DRB, and start sending a QoS flow data packet to the other DRB .
[21]
21. First device, according to claim 19 or 20, CHARACTERIZED by the fact that the first device is user equipment, the second device is an access network device, and the unit configured to determine the change of a mapping a QoS flow to a DRB for a mapping of the QoS flow to another DRB comprises:
a subunit configured to receive radio resource control (RRC) configuration sent by the second device, where the RRC configuration indicates the mapping of the QoS flow to the other DRB; and a subunit configured to determine, based on the RRC configuration, the change from the QoS flow mapping to the DRB to the QoS flow mapping to the other DRB.
[22]
22. First device, according to claim 19 or claim 20, CHARACTERIZED by the fact that the first device is user equipment, the second device is an access network device, and the unit configured to determine the change of a data mapping a stream of
Petition 870190080785, of 20/08/2019, p. 12/15
7/9
QoS for a DRB for a mapping of the QoS flow to another DRB comprises:
a subunit configured to receive a user plan data packet sent by the second device, where the user plan data packet carries referral information, and referral information indicates the mapping of the QoS flow to the other DRB; and a subunit configured to determine, based on the indication information, the shift from the QoS flow mapping to the DRB to the QoS flow mapping to the other DRB.
[23]
23. Second device, CHARACTERIZED by the fact that it comprises:
a unit configured to receive, on a radio data carrier (DRB), a data packet from a quality of service (QoS) stream mapped to the DRB; and a unit configured for: when it is determined to change from a QoS flow mapping to the DRB to a QoS flow mapping to another DRB, receive, in the DRB, a termination marker sent by a first device and receive a packet of the QoS flow data in the other DRB, where the end marker indicates the end of sending the QoS flow data packet in the DRB, the end marker is sent in the form of a control data unit, and the control data unit carries a QoS flow identity; where the end marker indicates that a protocol layer entity of the first device stops sending the QoS flow data packet in the DRB, the protocol layer entity is configured to map the QoS flow to the DRB or to the other DRB, and the protocol layer entity corresponds to a protocol data unit (PDU) session.
[24]
24. Second device, according to claim 23, CHARACTERIZED by the fact that the first device is user equipment, the second device is an access network device, and the second device additionally comprises:
one unit configured for: when it is determined to change the QoS flow mapping to the DRB to the QoS flow mapping to the other DRB, send radio resource control configuration
Petition 870190080785, of 20/08/2019, p. 13/15
8/9 (RRC) for the first device, where the RRC configuration indicates the mapping of the QoS flow to the other DRB.
[25]
25. Second device, according to claim 23, CHARACTERIZED by the fact that the first device is user equipment, the second device is an access network device, and the second device comprises:
one unit configured for: when the second device determines the change from the QoS flow mapping to the DRB to the QoS flow mapping to the other DRB, send a user plan data packet to the first device, where the user plan data packet carries referral information, and referral information indicates the mapping of the QoS flow to the other DRB.
[26]
26. Second device, according to any one of claims 23 to 25, CHARACTERIZED by the fact that it additionally comprises:
a unit configured to: deliver the QoS stream data packet received to the DRB first, and after the end marker is received, deliver the QoS stream data packet received to the other DRB.
[27]
27. Device, comprising a processor and a memory, CHARACTERIZED by the fact that the memory stores code, and when the code is invoked by the processor, the method as defined in any of claims 1 to 3, or as defined in claim 4 or 5, or as defined in any one of claims 11 to 14, or as defined in any one of claims 15 to 18 is implanted.
[28]
28. Computer storage media, comprising a memory, CHARACTERIZED by the fact that the memory stores code, and when the code is invoked, the method as defined in any of claims 1 to 3, or as defined in claims 4 or 5 , or as defined in any of claims 11 to 14, or as defined in any of claims 15 to 18 is implanted.
[29]
29. Computer program product, CHARACTERIZED by the fact that the computer program product comprises an instruction, and when the instruction is run on a computer, the computer implements the method as defined in any of claims 1 to 3, or
Petition 870190080785, of 20/08/2019, p. 14/15
9/9 as defined in claim 4 or 5, or as defined in any of claims 11 to 14, or as defined in any of claims 15 to 18.

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法律状态:
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