user plan relocation techniques in wireless communication systems

专利摘要:
techniques for modifying data sessions may allow changing user plan functions (upfs) that serve a data session. a eu that can identify a user plan for a first data session must be relocated from a first upf, and can start a second data session with a second upf using an ID associated with the first data session. in some cases, the first data session can be modified to be served by the second upf instead of the first upf. a network entity, such as a session management (smf) function, can determine that a user plan for a first eu data session is relocated far from a first upf, and can perform a plan plan reallocation user of the first data session by establishing a second data session on a second upf or by modifying the first data session to be served by a second upf.
公开号:BR112019019147A2
申请号:R112019019147
申请日:2018-02-22
公开日:2020-04-14
发明作者:Faccin Stefano
申请人:Qualcomm Inc；
IPC主号:

专利说明:

USER PLAN RELOCATION TECHNIQUES IN WIRELESS COMMUNICATION SYSTEMS
CROSSED REFERENCES [0001] This Patent Application claims priority for US Provisional Patent Application N62 / 473,904 by Faccin, entitled User Plane Relocation Techniques in Wireless Communication Systems, filed on March 20, 2017; and US Patent Application No. ^£ 15 / 900,532 by Faccin, et al., entitled User Plane Relocation Techniques in Wireless Communication Systems, filed February 20, 2018; each of which is assigned to the assignee.
INTRODUCTION [0002] The following generally refers to wireless communication and more specifically to the relocation of the user plan to a user device with different modes of service and session continuity.
[0003] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messages, transmission and so on. These systems may be able to support communication with multiple users by sharing available system resources (for example, time, frequency and power). Examples of such multiple access systems include code division multiple access systems (CDMA), time division multiple access systems (TDMA), frequency division multiple access systems (FDMA) and division multiple access systems orthogonal frequency, (for example, a Long Term Evolution (LTE) system, or a
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2/82 Nova Radio (NR) system. A wireless multiple access communications system can include a number of base stations or access network nodes, each simultaneously supporting communication to various communication devices, which may be known as user equipment (UE).
[0004] Some wireless communication systems (eg NR systems) may include a central network in communication with an UE. In some examples, the central network may provide various services to an UE connected to the central network, which may include the UE being connected to a base station. Specifically, the central network can support mobility management services, session management services and other operations associated with a UE. In some cases, the functions or entities that provide these different services may
be changed or modified with basis, for example, at the movement of a UE within a network.SUMMARY[0005] A method of communication without fic ) is described. The method may include establish, for one HUH, a first data session with a first function in user plan (UPF) for a network, receive, in the EU, an
request to establish a second data session with the network, and establish, by the UE and in response to receiving the request, the second data session with a second network UPF.
[0006] A device for wireless communication is described. The device may include a processor, memory in electronic communication with the processor, and instructions
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3/82 stored in memory. The instructions can be operable to make the processor establish, by a UE, a first data session with a first UPF of a network, receive, in the UE, a request to establish a second data session with the network, and establish, at least UE and in response to receiving the request, the second data session with a second network UPF.
[0007] A non-transitory, computer-readable medium for wireless communication is described. The non-transitory computer-readable medium may include operable instructions to have a processor establish, by a UE, a first data session with a first UPF of a network, receive, at the UE, a request to establish a second data session with the network, and establish, by the UE and in response to receiving the request, the second data session with a second network UPF.
[0008] Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, features, means, or instructions for releasing, after establishing the second data session, the first data session with the first UPF.
[0009] In some examples of the method, apparatus, and non-transitory computer-readable medium described above, establishing the second data session includes: transmitting to the network a request for establishing a protocol data unit (PDU) session for establishing the second data session that includes a data session ID associated with the
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4/82 first data session.
[0010] In some examples of the method, apparatus, and non-transitory computer readable medium described above, establishing the second data session with the second UPF still includes transmitting an indication that the PDU session establishment request may be for a relocation user plan.
[0011] Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, features, means, or instructions for receiving an acknowledgment from the network that the second data session can be established. Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, characteristics, means, or instructions for receiving user plan information associated with the second data session from the second UPF.
[0012] In some examples of the method, apparatus, and non-transitory computer-readable medium described above, the first data session can be established as a first PDU session with the first UPF.
[0013] In some examples of the method, device, and non-transitory computer-readable medium described above, the request can be received from a network session management function (SMF).
[0014] In some examples of the method, apparatus, and non-transitory computer-readable medium described above, the request includes a first data session correlation identification.
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5/82 [0015] A wireless communication method is described. The method may include determining that a user plan for a first UE data session should be reallocated far from a first UPF and performing a user plan reallocation of the first data session by establishing a second data session. data in a second UPF.
[0016] A device for wireless communication is described. The device can include a processor, memory in electronic communication with the processor, and instructions stored in memory. The instructions can be operable to make the processor determine that a user plan for a first data session of a UE must be reallocated far from a first UPF and perform a user plan reallocation of the first data session through the establishment second data session on a second UPF.
[0017] A non-transitory, computer-readable medium for wireless communication is described. The non-transitory computer-readable medium may include operable instructions to have a processor determine that a user plan for a first UE data session should be relocated far from a first UPF and perform a user plan reallocation of the first data session by establishing a second data session in a second UPF.
[0018] Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, features, means, or instructions for sending the UE a request for
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6/82 establish the second data session.
[0019] In some examples of the method, apparatus, and non-transitory computer-readable medium described above, the request to establish the second data session includes a first data session correlation identification.
[0020] In some examples of the method, apparatus, and non-transitory computer-readable medium described above, which reallocate the user plan includes: receiving a request from the UE to establish the second data session, the request including a first data session identification. Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, features, means, or instructions to determine that the request requires a remote UPF relocation from the first UPF serving the first data session based at least in part on the first data session identification provided by the UE. Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, features, means, or instructions for establishing the second data session with the second UPF.
[0021] In some examples of the method, apparatus, and non-transitory computer-readable medium described above, they determine that the request requires UPF reallocation includes: receiving, in the request from the UE, an indication of cause that the second establishment of the data session can be for a user plan reallocation.
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7/82 [0022] Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, features, means, or instructions for establishing a connection with the second UPF.
[0023] Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, features, means, or instructions for transmitting, to the UE, user plan information associated with the second data session and the second UPF.
[0024] In some examples of the method, apparatus, and non-transitory computer-readable medium described above, the method can be performed on an SMF on a network.
[0025] A method for wireless communication is described. The method may include identifying, on a user device (UE), that a user plan from a first data session with a network must be reallocated from a first user plan function (UPF) to a second UPF, start a second data session using an ID associated with the first data session, and establish the second data session with a second UPF.
[0026] A device for wireless communication is described. The apparatus may include means to identify, in a UE, that a user plan of a first data session with a network must be relocated from a first UPF to a second UPF, means to initiate a second data session using a identification associated with the first data session, and means to establish the
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8/82 second data session with a second UPF.
[0027] Another device for wireless communication is described. The device can include a processor, memory in electronic communication with the processor, and instructions stored in memory. The instructions can be operable to make the processor identify, in a UE, that a user plan of a first data session with a network must be reallocated from a first UPF to a second UPF, start a second data session using an identification associated with the first data session, and establishing the second data session with a second UPF.
[0028] A non-transitory, computer-readable medium for wireless communication is described. The non-transitory computer-readable medium may include operable instructions to make a processor identify, in a UE, that a user plan for a first data session with a network must be reallocated from a first UPF to a second UPF, initiate a second data session using an ID associated with the first data session, and establishing the second data session with a second UPF.
[0029] Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, features, means, or instructions for releasing, after the establishment of the second data session, the first data session with the first UPF. In some examples of the method, apparatus, and non-transitory computer-readable medium described above, the start of the second
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9/82 data comprises transmitting a protocol data unit (PDU) session establishment request to the network for establishing the second data session that includes one or more of the identification associated with the first data session or a first correlation identification data session. In some examples of the method, apparatus, and non-transitory computer-readable medium described above, the start of the second data session with the second UPF further comprises transmitting an indication that the PDU session establishment request is for a relocation plan. user.
[0030] Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, features, means, or instructions for receiving an acknowledgment from the network that the second data session is established. Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, characteristics, means, or instructions for receiving user plan information associated with the second data session from the second UPF.
[0031] Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, characteristics, means, or instructions for establishing, before identification, the first data session as a first PDU session with the first UPF. In some examples of the method, apparatus, and non-transitory computer-readable medium described above, the identification that the first data session should be
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10/82 reallocated comprises receiving a request to reallocate the user plan for the first data session. In some examples of the method, device, and non-transitory computer-readable medium described above, the request to relocate can be received from a network session management (SMF) function. In some examples of the non-transitory computer-readable method, apparatus, and medium described above, the request includes a first session correlation ID
in Dice. 0032 :] A method of stopping Communication wireless is described . 0 method may include determining which a plan in user in a first session of data from one EU should
be relocated far from a first UPF and reallocate a user plan from the first data session by establishing a second data session on a second UPF.
[0033] A device for wireless communication is described. The apparatus may include means for determining that a user plan for a first data session of a UE should be reallocated far from a first UPF and means for performing a user plan reallocation of the first data session by establishing a second data session on a second UPF.
[0034] Another device for wireless communication is described. The device can include a processor, memory in electronic communication with the processor, and instructions stored in memory. Instructions can be operable to make the processor determine that a
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11/82 user plan of a first data session of a UE must be relocated far from a first UPF and reallocate a user plan of the first data session by establishing a second data session in a second UPF.
[0035] A non-transitory, computer-readable medium for wireless communication is described. The non-transitory computer-readable medium may include operable instructions to make a processor determine that a user plan for a first UE data session must be reallocated far from a first UPF and perform a user plan reallocation of the first data session by establishing a second data session in a second UPF.
[0036] Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, features, means, or instructions for sending the UE a request to reallocate the user plan of the first data session. In some examples of the method, apparatus, and non-transitory computer-readable medium described above, the request to reallocate the user plan includes a first data session correlation identification.
[0037] Some examples of the non-transitory computer-readable method, apparatus, and medium described above may further include processes, features, means, or instructions for receiving a request from a UE to establish a second data session, the request including a first data session identification. Some examples of the method, apparatus,
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12/82 and non-transitory computer readable medium described above may further include processes, features, means, or instructions to determine that the request is for a remote UPF relocation from a first UPF serving the first data session based on the least in part in the first data session identification provided by the UE. Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, characteristics, means, or instructions for establishing the second data session with the second UPF.
[0038] In some examples of the method, apparatus, and non-transitory computer-readable medium described above, the determination that the request may be for the relocation of UPF comprises receiving, in the request from the UE, an indication of cause that the second establishment of the data session is for a user plan reallocation. Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, characteristics, means, or instructions for establishing a connection with the second UPF.
[0039] Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, features, means, or instructions for transmitting user plan information associated with the second data session to the UE and the second UPF. In some examples of the method, apparatus, and non-transitory computer-readable medium described above, the method can be performed on an SMF on a network.
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13/82 [0040] A method for wireless communication is described. The method may include identifying that a user plan for a first data session with a network must be reallocated from a first UPF, initiating a modification of the first data session to be reallocated using an ID associated with the first data session , and receive a confirmation of relocation of the first data session to a second UPF.
[0041] A device for wireless communication is described. The apparatus may include means for identifying that a user plan for a first data session with a network must be reallocated from a first UPF, means for initiating a modification of the first data session to be reallocated using an identification associated with the first data session, and means for receiving a confirmation of relocation from the first data session to a second UPF.
[0042] Another device for wireless communication is described. The device can include a processor, memory in electronic communication with the processor, and instructions stored in memory. Instructions can be operable to make the processor identify that a user plan for a first data session with a network must be reallocated from a first UPF, initiate a modification of the first data session to be reallocated using an ID associated with the first data session, and receive a confirmation of relocation of the first data session to a second UPF.
[0043] A computer-readable medium does not
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14/82 transient for wireless communication is described. The non-transitory computer-readable medium may include instructions operable to make a processor identify that a user plan for a first data session with a network must be reallocated from a first UPF, initiate a modification of the first data session to be relocated using an ID associated with the first data session, and receive a confirmation of relocation from the first data session to a second UPF.
[0044] In some examples of the method, apparatus, and non-transitory computer-readable medium described above, the start of modifying the first data session comprises transmitting a PDU session modification request to relocate the first data session, the request modifying a PDU session including a first data session identification of the first data session. In some examples of the method, apparatus, and non-transitory computer-readable medium described above, the PDU session modification request still includes a first data session correlation identification. Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, features, means, or instructions for transmitting an indication that the PDU session change request is for a user plan reallocation.
[0045] Some examples of the method, apparatus, and non-transitory computer-readable medium described
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15/82 above may also include processes, features, means, or instructions for receiving confirmation from the second UPF that the first data session is established in the second UPF. Some examples of the non-transitory, computer-readable method, apparatus, and medium described above may also include processes, features, means, or instructions for receiving user plan information associated with the second UPF.
[0046] Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, characteristics, means, or instructions for establishing, before identification, the first data session as a PDU session with the first UPF. In some examples of the method, apparatus, and non-transitory computer-readable medium described above, the identification that the first data session must be reallocated comprises receiving a request to reallocate from the first UPF to the second UPF. In some examples of the method, device, and non-transitory computer-readable medium described above, the request to relocate can be received from an SMF on the network.
[0047] A method for wireless communication is described. The method may include determining that a user plan for a first UE data session must be reallocated far from a first UPF and performing a user plan reallocation of the first data session by modifying the first data session to be served by a second UPF.
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16/82 [0048] A device for wireless communication is described. The apparatus may include means for determining that a user plan for a first data session of a UE should be reallocated far from a first UPF and means for performing a user plan reallocation of the first data session by modifying the first data session to be served by a second UPF.
[0049] Another device for wireless communication is described. The device can include a processor, memory in electronic communication with the processor, and instructions stored in memory. The instructions can be operable to make the processor determine that a user plan for a first data session of a UE must be reallocated far from a first UPF and perform a user plan reallocation of the first data session by modifying of the first data session to be served by a second UPF.
[0050] A non-transitory, computer-readable medium for wireless communication is described. The non-transitory computer-readable medium may include operable instructions to make a processor determine that a user plan for a first UE data session must be reallocated far from a first UPF and perform a user plan reallocation of the first data session by modifying the first data session to be served by a second UPF.
[0051] Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, features,
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17/82 means, or instructions to send the UE a request to reallocate the user plan of the first data session. In some examples of the method, apparatus, and non-transitory computer-readable medium described above, the request to reallocate the user plan includes a first data session correlation identification.
[0052] Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, features, means, or instructions for receiving a request from a UE to modify a first data session, including the request a first data session identification. Some examples of the non-transitory, computer-readable method, apparatus, and medium described above may also include processes, features, means, or instructions to determine that the request is for a remote UPF relocation from the first UPF serving the first data session based at least in part on the first data session identification provided by the UE. Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, features, means, or instructions for selecting the second UPF for the first modified data session.
[0053] In some examples of the method, apparatus, and non-transient computer-readable medium described above, the determination that the request is for the relocation of UPF comprises receiving, in the request from the UE, an indication of the cause that the request is for a user plan reallocation. In some examples
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18/82 of the method, apparatus, and non-transitory computer-readable medium described above, the request includes a first data session correlation identification.
[0054] Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, features, means, or instructions for establishing a connection with the second UPF. Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, features, means, or instructions for transmitting user plan information associated with the second UPF to the UE. Some examples of the non-transitory computer-readable method, apparatus, and medium described above may also include processes, features, means, or instructions for triggering a session release on the first UPF. In some examples of the method, apparatus, and non-transitory computer-readable medium described above, the method may
be performed in a function management session (SMF) of a network. BRIEF DESCRIPTION OF DRAWINGS[0055] The Figure 1 illustrates an example on one
wireless communication system that supports user plan relocation to a UE with different modes of service continuity and session in accordance with one or more aspects of this disclosure;
[0056] Figure 2 illustrates an example of a wireless communication system that supports user plan relocation to a UE with different modes of service continuity and session according to one or more
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19/82 aspects of this disclosure;
[0057] Figures 3 to 6 illustrate examples of process flows in systems that support user plan reallocation to a UE with different modes of continuity of service and session in accordance with one or more aspects of the present disclosure;
[0058] Figures 7 to 9 show block diagrams of a device or devices that support user plan relocation to a UE with different modes of continuity of service and session in accordance with one or more aspects of the present disclosure;
[0059] Figure 10 illustrates a block diagram of a system including a UE that supports user plan relocation to a UE with different modes of continuity of service and session in accordance with one or more aspects of the present disclosure;
[0060] Figures 11 to 13 show block diagrams of a device or devices that support user plan relocation to a UE with different modes of continuity of service and session in accordance with one or more aspects of the present disclosure;
[0061] Figure 14 illustrates a block diagram of a system including a central network entity that supports user plan reallocation to a UE with different modes of service and session continuity according to one or more aspects of the present disclosure; and [0062] Figures 15 to 18 illustrate methods for reallocating the user plan to a UE with different modes of continuity of service and session in accordance with one or more aspects of this disclosure.
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20/82
DETAILED DESCRIPTION [0063] A wireless communication system (for example, a 5G system or an NR) can include a central network communicating with a base station and / or a UE. The core network functions can be virtualized to allow for a more flexible architecture. Specifically, a central network can include various entities (for example, roles) such as access and mobility management roles (AMFs), session management roles (SMFs), user plan roles (UPFs), and others, which can be virtually implemented in software. A UPF can provide functionality to serve as the data network (DN) interconnection point for a data session (for example, a PDU session). In addition, in the wireless communication system (for example, a 5G system or an NR), a UE may be in a mode connected with a central network entity and / or a base station and may have different modes of service continuity and session with one or more of the entities. In some cases, it may be desirable for an UE with an established data session served by a first UPF to have the data session served by a different UPF (for example, as a result of moving the UE).
[0064] Some wireless communication systems may support techniques for modifying data sessions such as changing UPFs that serve a data session. Specifically, in some instances, the UE may identify a user plan for a first data session with a network that must be relocated to
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21/82 from a first UPF to a different UPF. In some instances, an SMF may transmit a request to the UE that requests the UE to reallocate a data session served by the first distant UPF from the first UPF. The UE can initiate a second data session using an identification associated with the first data session, and establish the second data session with a second UPF that responds to the request to relocate the data session. In some cases, the second data session can be established with the second UPF, and the UE can release the first data session with the first UPF. In some cases, the first data session can be modified to be served by the second UPF instead of the first UPF.
[0065] In some cases, an SMF may determine that a user plan for a first data session of a UE should be reallocated far from a first UPF, and may perform a user plan reallocation of the first data session by establishing a second data session on a second UPF. In some cases, SMF may send the UE a request to reallocate the user plan for the first data session and, in response, receive a request to reallocate the user plan, which may include a first session correlation indicator of data. In some cases, the SMF may receive a request from the UE to establish a second data session, and a second data session can be established using a data session identification associated with the first data session. In other cases,
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22/82 the SMF can determine that a user plan for a first data session of a UE must be reallocated far from a first UPF, and reallocate a user plan for the first data session by modifying the first session of data to be served by a second UPF.
[0066] The disclosure aspects presented above are described below in the context of wireless communications systems. Examples of signaling processes and exchanges that support the relocation of the user plan to a UE with different modes of service and session continuity are then described. The disclosure aspects are further illustrated and described with reference to device diagrams, system diagrams and flowcharts that relate to the relocation of the user plan to a UE with different modes of service and session continuity.
[0067] Figure 1 illustrates an example of a wireless communication system 100 in accordance with various aspects of the present disclosure. The wireless communication system 100 includes base stations 105, UEs 115, and a central network 130. In some examples, the wireless communication system 100 can be an LTE (or LTE-Advanced) network, or an NR network . In some cases, the wireless communication system 100 can support enhanced broadband communications, ultra-reliable (ie mission-critical) communications, low latency communications and communications with low cost and low complexity devices.
[0068] Base stations 105 can communicate
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23/82 wirelessly with UEs 115 through one or more base station antennas. Each base station 105 can provide communication coverage for a respective geographic coverage area 110. Communication links 125 shown on wireless communication system 100 can include uplink transmissions from an UE 115 to a base station 105, or transmissions from downlink, from a base station 105 to a UE 115. A UE 115 can communicate with the central network 130 via communication link 135. The control and data information can be multiplexed on an uplink or downlink channel according to various techniques. Control information and data can be multiplexed in a downlink channel, for example, using time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques or TDM-FDM hybrid techniques. In wireless communication system 100, a base station 105 or a group of base stations 105 can be referred to as a radio access network (RAN) 105.
[0069] UEs 115 can be dispersed throughout the wireless communication system 100, and each UE 115 can be stationary or mobile. A UE 115 can also be referred to as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device , a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a
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24/82 customer or some other suitable terminology. An UE 115 can be a cell phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a portable device, a tablet computer, a laptop, a cordless phone, a personal electronic device , a portable device, a personal computer, a wireless local loop station (WLL), Internet of Things (loT) device, Internet of Everything (loE) device, machine-type communication device (MTC), device , automobile, or the like.
[0070] The base stations 105 can communicate with the central network 130 and with each other. For example, base stations 105 can interface with central network 130 via backhaul links 132 (e.g., Sl). Base stations 105 can communicate with each other via backhaul links 134 (for example, X2) directly or indirectly (for example, through central network 130). Base stations 105 can perform radio configuration and programming for communication with UEs 115, or they can operate under the control of a base station controller (not shown). In some examples, base stations 105 may be macro cells, small cells, hot spots, or the like. Base stations 105 can also be referred to as gNodeBs (gNBs) 105.
[0071] The central network 130 can provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity and other access, routing or mobility functions. An
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25/82 exemplary function of main network 130 can be SMF 120, which can provide session management services for UEs 115. Specifically, SMF 120 can establish, modify and release sessions (or carriers) for communication between UEs 115 and a network of data. For example, SMF 120 can maintain a tunnel for communication between a UPF and an access network node (AN). In addition, SMF 120 can allocate and manage IP addresses for UEs 115, select and control user plan functions, configure traffic direction in the UPF to route traffic to appropriate destinations, terminate parts of the SM from non-access messages stratum (NAS), provide roaming functionality, etc.
[0072] In some examples, one or more base stations 105 may include subcomponents such as an access network entity, which can be an example of an access node controller (ANC). Each access network entity can communicate with several UEs 115 through several other access network entities, each of which can be an example of an intelligent radio head, or a transmit / receive point (TRP). In some configurations, various functions of each access network entity or base station 105 can be distributed across multiple network devices (for example, radio heads and access network controllers) or consolidated to a single network device (for example, a base station 105).
[0073] The UEs 115 can include a data session manager from the UE 101, which can identify a user plan from a first data session with a network
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26/82 must be relocated from a first UPF to a different UPF. In some instances, an SMF 120 may transmit a request to the UE 115 that requests the UE 115 to reallocate a data session served by the first distant UPF from the first UPF. UE 115 can initiate a second data session using an identification associated with the first data session, and establish the second data session with a second UPF that responds to the request to relocate the data session. In some cases, the second data session can be established with the second UPF, and the UE 115 can release the first data session with the first UPF. In some cases, the first data session can be modified to be served by the second UPF instead of the first UPF.
[0074] SMF 120 may include a central network entity data session manager 102, which may, in some cases, determine that a user plan for a first data session of a UE 115 must be relocated far from of a first UPF and can perform a user plan reallocation of the first data session by establishing a second data session in a second UPF. In some cases, SMF 120 may send the UE a request to reallocate the user plan from the first data session and, in response, receive a request to reallocate the user plan, which may include a first correlation indicator of data session. In some cases, SMF 120 may receive a request from UE 115 to establish a second data session, and a second
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27/82 data session can be established using a data session identification associated with the first data session. In other cases, SMF 120 may determine that a user plan for a first data session of a UE 115 must be reallocated far from a first UPF and perform user plan reallocation of the first data session by modifying the first data session to be served by a second UPF.
[0075] In some cases, the wireless communication system 100 may be a packet-based network that operates according to a layered protocol stack. At the user level, carrier communications or Packet Data Convergence Protocol (PDCP) layer can be IP based. A Radio Link Control (RLC) layer can, in some cases, perform the segmentation and reassembly of packets to communicate through logical channels. A medium access control layer (MAC) can perform priority treatment and multiplex logical channels for transport channels. The MAC layer can also use the hybrid ARQ (HARQ) to provide relay on the MAC layer to improve the efficiency of the link. In the control plane, the radio resource control protocol (RRC) layer can provide for the establishment, configuration and maintenance of an RRC link between a UE 115 and a base station 105 or a main network 130 supporting radio bearers for flat user data. In the Physical layer (PHY), transport channels can be mapped to physical channels.
[0076] In wireless communication system 100
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28/82 (for example, a 5G system), the functions of the core network 130 can be virtualized to allow for a more flexible architecture. Specifically, a central network can include several entities (or functions) such as AMFs, SMEs, UPFs, etc. implemented in software. In addition, in the wireless communication system (for example, 5G system), a UE 115 can be in a connected mode with a base station 105 and a data session (for example, a PDU session) of a wireless service can be served with a first UPF. It can be determined that the data session should be relocated to a second UPF, such as based on UE 115 that moves within wireless communication system 100. Wireless communication system 100 can support techniques for efficient UPF relocations between an UE 115 and different UPF entities (or functions) of central network 130.
[0077] Figure 2 illustrates an example of a wireless communication system architecture 200 that supports user plan relocation to a UE with different modes of service continuity and session in accordance with one or more aspects of the present disclosure. The wireless communication system architecture 200 can include UE 115-a, (R) AN 105-a (which can be an example of a base station 105 in Figure 1), and SMF 215, which can be examples of the corresponding devices described with reference to Figure 1. The wireless communication system architecture 200 may also include one or more authentication server functions (AUSFs) 205, unified data management entities (UDM) 210, user plan functions (UPFs) ) 220 (for example, in communication
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29/82 with a data network (DN) 230), policy control functions (PCFs) 225, and authorization functions (AFs) 235. In addition, the wireless communication system architecture 200 may include other functions or entities not shown within the figure, or it may not include one or more of the functions or entities shown.
[0078]
AUSF 205 can provide authentication services for UE 115-a. For example, the AUSF 205 can initiate authentication of UE 115-a and provide NAS security functions for an UE 115-a based on an AME 240 request via communication link N12. In some cases, the authentication and security function may be based on information stored in an 210 entity (for example, a UDM). Entity 210 (for example, a UDM) can support an authentication credential processing and repository (ARPE) function that stores the long-term security credentials used in authentication. AUSF 205 can retrieve information from entity 210 (for example, UDM) the communication link N13.
[0079]
SMF 215 can provide session management services for UE 115-a. Specifically, SMF 215 can establish, modify, and release sessions (or carriers) for communication between UE 115-a and DN 230. For example, SMF 215 can maintain a tunnel for communication between UPF 220 and an access network node ( AN). In addition, the SMF 215 can allocate and manage IP addresses for UE 115-a, select and control user plan functions, configure traffic routing on the UPF 220 to route traffic to appropriate destinations,
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30/82 terminate SM portions of NAS messages, provide roaming functionality, etc. In some cases, SMF 215 may determine that a PDU service must be reallocated between two UPFs 220, and may initiate a reallocation.
[0080] UPF 220 can include functionality to serve as the interconnection point to DN 230 for an external PDU session. In some cases, the UPF 220 can be the anchor point for intra-RAT and interRAT mobility. The UPF 220 can route and forward packages to and from DN 230, inspect packages and enforce policy rules on the user plan, report traffic usage, handle quality of service (QoS) for the user plan packages, check traffic from uplink, etc. PCF 225 can support a unified policy framework to govern network behavior. Specifically, PCF 225 can provide policy rules to control the plan's functions to enforce them. In some cases, PCF 225 may retrieve subscription information from a subscription repository at entity 210 (for example, a UDM). The AF 235 can support services to authorize an UE 115-a to access a network.
[0081] In some wireless systems (for example, a 5G wireless system), a UE 115-a can access a DN 230 to exchange data packets using a data session or a PDU session. The PDU session can provide a PDU connectivity service, which can support the transmission of one or more PDUs between UE 115-a and DN 230. An association between UE 115-a and DN 230 in a PDU session can use internet protocol (IP) or
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Ethernet, or the association may be unstructured. In some cases, DN 230 can be an example of a local DN, central DN, public land mobile networks (PLMNs), etc.
[0082] As illustrated, the different functions of a central network can be virtualized to support a more flexible architecture. That is, the different functions described above can be implemented in software. In such cases, an UE 115-a can communicate with DN 230, SMF 215, PCF 225, etc. via the N3 communication link between (R) AN 105-a and UPF 220. The N3 communication link can be termed as a data connection for the UE 115-a. In some cases, it may be desirable to switch a PDU session from a UPF 220 to a different UPF 220. For example, mobility of UE 115-a may result in a transfer from an (R) AN 105-a source for an (R) AN target, and it may be more efficient to have a PDU session established with a first UPF 220 to be relocated to a second UPF 220 that can be closer to the (R) AN target (for example, if DN 230 it can be a local DN and the target (R) AN also has corresponding data stored in an associated local DN).
[0083] Wireless communication system architecture 200 can support modification of session PDUs such as by changing UPFs 220 serving a session PDU. Specifically, in some instances, the UE 115-a can identify a user plan for a first PDU session with a network to be relocated from a first UPF to a different one
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UPF. In some examples, SMF 215 may transmit a request to UE 115-a that requests UE 115-a to reallocate the PDU session served by the first UPF 220 distant from the first UPF. The UE can initiate a second PDU session using an ID associated with the first PDU session, and establish the second PDU session with a second UPF (not shown) that responds to the request to relocate the PDU session. In some cases, the second PDU session can be established with the second UPF, and the UE 115-a can release the first PDU session with the first UPF 220. In
some cases, The first session of PDU can to be modified to be served for the second UPF instead gives first UPF.[0084]As noted above, in some cases, the SMF 215 can to determine that a plan in user gives
The first PDU session must be reallocated far from a first UPF 220, and can perform a user plan reallocation of the first PDU session by establishing the second PDU session on the second UPF. In some cases, SMF 215 may send the UE 115-to a request to reallocate the user plan from the first PDU session and, in response, receive a request to reallocate the user plan, which may include a first indicator of PDU session correlation. In some cases, SMF 215 may receive a request from UE 115-a to establish a second PDU session, and a second PDU session can be established using a PDU session ID associated with the first PDU session. In another
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In 33/82 cases, SMF 215 may determine that a user plan for a first PDU session of a UE 115-a should be reallocated far from a first UPF 220, and perform user plan reallocation of the first session of PDU by modifying the first PDU session to be served by a second UPF.
[0085] Figure 3 illustrates an example of a flow process 300 in a system that supports relocation of user plan to a UE with different modes of continuity of service and session according to one or more aspects of the present disclosure. The process flow 300 can include a UE 115-b and an SMF 215-a, which can be examples of the corresponding devices described with reference to Figures 1 to 2. The process flow 300 can also include (R) AN 105-b, AME 240-a, UPF 220-a, PCF 225-a, UDM 210-a, and DN 230-a, which can be examples of corresponding devices or functions described with reference to Figures 1 to 2.
[0086] In the example of Figure 3, the UE 115-b may have already been registered in the AME 240-a, so the AME 240-a may have retrieved the user signature data from UDM 210-a. At 305, UE 115-b can transmit a PDU session establishment request in order to establish a new PDU session. In some cases, as noted above, SMF 215-a may request that UE 115-b initiate a UPF relocation, and in such cases UE 115-b may transmit the PDU session establishment request using the ID of Existing PDU session from the PDU session to which the user plan is relocated. In some cases, the SMF 215-a may provide identification of
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PDU session correlation í to UE 115-b, what the UE 115-b can include in the PDU request. establishment session [0087] In some cases, the HUH 115-b can
initiate the requested PDU Session establishment procedure for UE to transmit a message containing a PDU Session Establishment request within the NI (SM) session management information. The PDU session establishment request can include one or more of a PDU Type, session and service continuity mode (SSC), or protocol configuration options. If the request is for the user plan reallocation, the UE 115-b, in some examples, may include an indication that the establishment request for the user plan reallocation, which can be indicated, for example, by adjusting an associated flag in a user plan reallocation field. The message sent by UE 115-b can be encapsulated by (R) AN 105-b in an N2 message which can be provided to AME 240-a.
[0088] In 310, AME 240-a can determine whether the message corresponds to a request for a new PDU Session or a reallocation of an existing PDU session and perform SMF selection based at least in part on the determination. In some instances, AME 240-a may determine that the request is for a new PDU session if a PDU Session ID in the request is not used for any existing PDU session (s) of the UE 115-b , in which case the AME 240-a can select an SMF according to SMF selection criteria
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35/82 established. If AMF 240-a determines that the request corresponds to a user plan reallocation for an existing PDU session, such as based on the PDU Session ID corresponding to an existing UE PDU session, then AMF 240- can retrieve the current service SMF for the existing PDU session. In some cases, the request may also include an indication of a cause of establishment to establish the PDU session, and a user plan reallocation can be included as one of the causes of establishment. If, in such cases, AMF 240-a determines that the cause of establishment is reallocation of the user plan, the current service SMF can be identified for the existing PDU session. In some cases, the AMF 240-a may determine that the request message corresponds to a request for the user's plan reallocation to an existing PDU session based on the PDU Session Correlation ID, the AMF 240-a may select an SMF based on the PDU Session Correlation ID.
[0089]
The MFA
240-a can transmit an SM 315 request, which can include a PDU session establishment request, to SMF 215-a. The SM request can include, for example, a UE 115-b identification (for example, a Permanent Subscriber ID), SM Nl information, and other parameters. SM Nl information may include the PDU session request received from UE 115-b.
[0090]
The SMF 215-a can transmit a
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36/82 request for subscription data 320 for UDM 210-a, which may include, for example, a permanent subscriber identification of the UE, and other parameters. UDM 210-a can provide a signature data response 322 to SMF 215-a, which may include, for example, authorized PDU type (s), authorized SSC mode (s), and a default quality of service profile (QoS). In some cases, SMF 215-a can verify that the UE request is compatible with the user's signature and local policies.
[0091]
At 325, the PDU authentication and authorization session can be performed. In cases where a PDU session is relocated, the PDU authentication session may determine that the PDU session remains authenticated and authorized. In option 330, the SMF 215-a can perform PCF selection and can exchange PDU-CAN 335 session establishment information with PCF 225-a.
[0092]
At 340, the SMF 215-a can perform UPF selection. In some cases, SMF 215-a may determine that the UPF selection is performed as part of a user plan reallocation, and may select a new UPF based on the existing PDU session and associated UPFs. The SMF 215-a can also allocate an IP address / prefix for the PDU session. SMF 215-a can also initiate a PDU-CAN session or 345 modification toward PCF 225-a to obtain, for example, policy and collection control (PCC) rules for the PDU session and update related information the UPF in the PCF.
[0093]
The SMF 215-a can start a
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37/82 establishment of session N4 or modification procedure 350 with the selected UPF 220-a, which in cases of PDU session reallocation can be a UPF that is associated with a DN 230-a that can provide data associated with the PDU session. In some cases, the central network (CN) tunnel information may be provided to UPF 220-a in the N4 session change or establishment message. The UPF 220-a can provide a 352 session establishment / modification response for the SMF 215-a. If CN tunnel information is assigned by UPF 220-a, CN tunnel information can be provided to SMF 215-a.
[0094] SMF 215-a can provide an SM 355 request confirmation for AMF 240-a, which may include an indication that the PDU session establishment has been accepted. In some cases, an SM 355 order confirmation may include information that the AMF 240-a can provide to (R) AN 105-b, such as CN tunnel information that corresponds to the N3 tunnel CN address corresponding to the existing PDU session, a QoS profile, and PDU session ID. The AMF240-a can transmit N2 360 PDU session request to (R) AN 105-b.
[0095] (R) AN can exchange 362 specific resource configuration information with UE 115-b. Such information may include information received from SMF 215-a. In some cases, the switch may be an RRC connection reconfiguration. The (R) AN 105-b can also allocate (R) AN tunnel information for the PDU session. After this exchange, (R) AN 105-b can provide
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Confirmation of PDU Session Request No. 364 for AMF 240-a. The UE 115-b can then transmit first uplink data 365 to the new UPF 220-a, according to the PDU session established with UPF 220-a. In some cases, the UE 115-b may also release a previous PDU session with a previous UPF. The AME 240-a can transmit an SM request with N2 370 information to SMF 215-a, followed by SMF 215-a transmitting an N4 375 modification request to UPF 220-a. The UPF 220-a can transmit an N4 377 modification response back to SMF 215-a which can transmit SM 380 request confirmation back to AMF 240-a. The SMF 215-a can provide an IP address configuration 385 for UPF 220-a and UE 115-b, and UPF 220-a can transmit first downlink data 390 to the UE 115b. During the lifetime of the PDU session, the AMF 240-a stores an association of the PDU session ID and the SMF ID.
[0096] Figure 4 illustrates an example of a process flow 400 in a system that supports relocation of user plan to a UE with different modes of continuity of service and session according to one or more aspects of the present disclosure. Process flow 400 can include a UE 115-c and an SMF 215-b, which can be examples of the corresponding devices described with reference to Figures 1 to 2. Process flow 400 can also include (R) AN 105-c, AMF 240-b, an old UPF 220-b, a new UPF 220-c, PCF 225-b, and UDM 210-b, which can be examples of corresponding devices or functions described with reference to Figures 1 to 2.
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39/82 [0097] In the example in Figure 4, UE 115-c may have already been registered to AME 240-b, so AME 240-b may have retrieved user subscription data from UDM 210-b . At 305, UE 115-c can transmit a PDU session modification request to AME 240-b in order to modify a PDU session. In some cases, the UE 115-c initiates the procedure to modify the QoS associated with the PDU session. In some cases, as indicated above, the SMF 215-b may request that the UE 115-c initiate a UPF relocation, and in such cases the UE 115-c may transmit the PDU session modification request using the ID of PDU session of the existing PDU session to which the user plan is relocated In some cases, the UE 115-c can invoke the procedure for establishing the SSM mode of a new PDU session, and can provide the ID of PDU session from the existing PDU session, and trigger a UPF reallocation.
[0098] The AME 240-b can receive the request and transmit a request from SM 410 to SMF 215-b that includes a PDU session modification request. The SMF 215-b can then exchange PDU-CAN 415 session modification information with PCF 225-b. UDM 210-b can transmit inserted subscriber data 420 to SMF 215b, and SMF 215-b can transmit an acknowledgment of inserted subscriber data 422 back to UDM 210-b. The subscriber data entered can include, for example, a Permanent Subscriber identity and signature data in a message to SMF 215-b.
[0099] In 425, the SMF 215-b can receive a
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40/82 trigger for a QoS update to modify in the established PDU session. This procedure can be triggered, for example, based on QoS parameters, or it can be triggered based on locally configured policy. If the SMF 215-b receives one of the triggers at 405 to 425, a PDU session modification procedure can be initiated.
[00100] In 430, SMF 215-b can, upon receiving an indication that the procedure is for the reallocation of the user's plan, determine whether the request is compatible with the user's signature and with local policies. If the request is not compatible, SMF 215-b can reject the request and the rest of the procedure can be skipped. If the request is compatible, SMF 215-b can select a new UPF and can allocate an IP address / prefix for the PDU Session. The new UPF can be selected based on several factors, such as available UPFs that have access to a DN associated with the PDU session, a proximity to a UPF for the (R) AN 105-c, a QoS of the PDU session , other factors, or any combination thereof.
[00101] If operations at 430 are performed, SMF 215-b can transmit an N4 435 session establishment request to the new UPF 220-c that was selected at 430. SMF 215-b can also provide packet detection , execution and reporting rules to be installed on the new UPF 220-c for that PDU Session. If CN tunnel information is allocated by SMF 215-b, that information can also be provided for the new UPF 220-c. The new UPF 220-c
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41/82 can confirm the request by sending an N4 437 session establishment response to SMF 215-b. If CN tunnel information is allocated by the new UPF 220-c, CN tunnel information can be provided for SMF 215-b.
[00102] SMF 215-b can interact with PCF 225-b to retrieve one or more policies using CAN 440 PDU session change communications, and in some cases this operation can be skipped if the session change procedure PDU is triggered by 415 or 425. SMF 215-b can transmit request from SM 445 to AMF 240-b, which can include a PDU session request command. The SM 445 request may include, for example, SM N2 information (PDU Session ID), and a NI SM container (PDU Session Request Command (PDU Session ID)) in a message to the AMF 240-b. SM N2 information may include information that AMF can provide to (R) AN 105-c, and in the event of a user plan change, this may include information from the CN tunnel. In some cases, the SM NI container may provide the PDU session request command from the AMF 240-b to the UE 115-c.
[00103] The AMF 240-b can then send PDU session request N2 450 to (R) AN 105-c, which can include the SM N2 information received from the SMF 215-b, a NAS message, a message to (R) AN 105-c, or any combination thereof. The (R) AN 105-c can issue AN 455 specific signaling to exchange information with the UE which is related to the information
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42/82 received from SMF 215-b. For example, in the case of a 3GPP RAN, an RRC connection reconfiguration can occur with the UE 115-c by modifying the necessary RAN resources related to the PDU Session. The UE can confirm the PDU session request command by sending a PDU session request command confirmation message (for example, via NAS SM signaling).
[00104] The (R) AN 105-c can provide an N2 460 session response to the AME 240-b, which can provide an N2 PDU session release confirmation message (NAS message) to the AME 240-b . The AME 240-b can forward the session response to the SMF 215-b through the SM 465 request confirmation. The SMF 215-b can update the N4 session of the UPF (s) 220 that are involved by modifying PDU session by sending N4 470 session modification request to the new UPF 220-c, which can trigger N4 472 modification response from the new UPF 220-c. In some cases, modification response 472 may trigger an N4 475 session release request towards the old UPF 220b and corresponding N4477 session release response
from the old UPF 220-b.[00105] THE Figure 5 illustrates an example of a process flow 500 in a system that supports relocation
user plan for a UE with different modes of service continuity and session in accordance with one or more aspects of this disclosure. Process flow 500 can include UE 115-d and SMF 215-c, which can be examples of the corresponding devices described with reference to Figures 1 to 2. Process flow 500
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43/82 can also include (R) AN 105-d, AMF 240-c, a first UPF 220-d, and a second UPF 220-e, which can be examples of corresponding devices or functions described with reference to Figures 1 to 3.
[00106] In the example in Figure 5, the UE 115-d can have an existing PDU session established, and can exchange 505 uplink and downlink data with the first UPF 220-d. In 510, the SMF 215-c can determine whether the first UPF 220-d is to be relocated due to events that can benefit from UPF relocation, such as UE 115-d mobility, QoS considerations, other parameters such as discussed above, or combinations thereof. Based on the determination, the SMF 215-c can send a message from NAS 515 to the UE 115-d via AMF 240-c. The NAS 515 message may include a PDU session ID to be relocated with an indication that a reestablishing PDU session for the same DN is required. The SMF 215-c may indicate to the AMF 240-c the need to maintain the PDU session information for that PDU session (for example, by providing a PDU to SMF Session ID mapping) for a certain amount of time. Additionally or alternatively, SMF 215-c may provide UE 115-d with PDU session correlation identification and may not indicate that the PDU session context should be maintained. AMF 240-c may, based on the PDU session correlation identification or the indication maintain PDU session information, maintain the context for the PDU session in order to allow a subsequent PDU session to be established that it can use the context.
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44/82 [00107] A PDU 520 session release procedure can be performed to release the session with the first UPF 220-d. The SMF 215-c can, as discussed above,
maintain the context of EU 115-d (per example, for an amount of time dependent on the implementation) after what can release information from HUH if the UE 115-d not reestablish a new PDU session session. PDU with the same ID in [00108] A procedure for establishment in PDU 525 session can be started by UE 115-d. In
In some cases, the PDU 520 session release procedure may be performed simultaneously with the PDU 525 session establishment procedure. In other cases, the PDU 525 session establishment procedure may be performed prior to the previously release procedure. PDU session 520 (that is, a new PDU session is made before interrupting an established PDU session). The establishment of the new PDU session can be carried out in a manner similar to that discussed in relation to Figure 3. In some cases, the PDU 525 session establishment procedure can be carried out by providing the same PDU Session ID as the UE 115-d used for the previous PDU session and an indication that the new PDU session is for the user plan reallocation. Alternatively, the UE 115-d can provide the AME 240-c with the PDU Session Correlation ID, which the AME 240-c can use in SMF selection for the PDU session. The correlation ID is such that the AME 240-c that may have released the context for the PDU session may reselect the same SMF, without the need to disclose the
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UE 115-d the SMF address. The AME 240-c can then forward that session establishment request received from the UE 115-d to the SMF 215-c corresponding to the previous PDU session based on the PDU Session ID provided by the UE 115-d, so that the SMF 215-c can select the second UPF 220-e (i.e. UPF2) for the established PDU resection. After establishing the PDU session with the second UPF 220-e, uplink and downlink 530 data can be transmitted using the second UPF 220-e.
[00109] Figure 6 illustrates an example of a process flow 600 in a system that supports relocation of user plan to a UE with different modes of continuity of service and session according to one or more aspects of the present disclosure. Process flow 600 can include an UE 115-e and an SMF 215-d, which can be examples of the corresponding devices described with reference to Figures 1 to 2. Process flow 600 can also include (R) AN 105-e, AME 240-d, a first UPF 220-f, and a second UPF 220-g, which can be examples of corresponding devices or functions described with reference to Figures 1 to 2, and 4.
[00110] In the example of Figure 6, UE 115-e can have an existing PDU session established, and can exchange data from uplink and downlink 605 with the first UPF 220-f. In 610, SMF 215-d can determine that the first UPF 220-f serving is relocated due to events that can benefit from UPF relocation, such as UE 115-e mobility, QoS considerations, other parameters such as discussed above, or combinations of
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46/82 same. Based on the determination, the SMF 215-d can send a message from NAS 615 to the UE 115-f via AME 240-d. The NAS 615 message may include a PDU session ID to be reallocated with an indication that a re-establishing PDU session for the same DN is required.
[00111] In 620, the SMF 215-d and UE 115-e can perform a PDU session modification procedure to reselect from the first UPF 220-f to the second UPF 220-g. In some cases, the UE 115-e may initiate the 620 PDU session modification procedure by providing the same PDU Session ID as the UE 115-e used for the previous PDU session and an indication that the session PDU for reallocating the user plan. The SMF 215-d can perform the PDU session release procedure to release the PDU session on the first UPF 220-f. Thus, the same PDU session from the UE 115-e perspective can be maintained, with a change from the first UPF 220-f to the second UPF 220-g, and uplink and downlink 625 data can be transmitted using the second UPF 220-g.
[00112] Figure 7 shows a block diagram 700 of a wireless device 705 that supports relocation of user plan to a UE with different modes of continuity of service and session in accordance with one or more aspects of the present disclosure. The wireless device 705 can be an example of aspects of an UE 115 as described with reference to Figures 1 to 6. The wireless device 705 can include receiver 710, data session manager of the UE 715, and transmitter 720. The device 705 wireless too
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47/82 can include a processor. Each of these components can be in communication with each other (for example, through one or more buses).
[00113] Receiver 710 can receive information such as packages, user data, or control information associated with various information channels (for example, control channels, data channels, and information related to user plan relocation). The information can be passed on to other components of the device. Receiver 710 can be an example of aspects of transceiver 1035 described with reference to Figure 10.
[00114] The UE 715 data session manager can be an example of aspects of the UE 1015 data session manager described with reference to Figure 10. The UE 715 data session manager and / or at least some of its various subcomponents can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software run by a processor, the functions of the UE 715 data session manager and / or at least some of its various subcomponents can be performed by a general purpose processor, a digital signal processor (DSP), a application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate logic or transistor, discrete hardware components, or any combination thereof designed to perform the functions described herein disclosure.
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48/82 [00115] The UE 715 data session manager and / or at least some of its various subcomponents can be physically located in various positions, including being distributed such that portions of functions are implemented in different physical locations by one or more physical devices. In some instances, the UE 715 data session manager and / or at least some of its various subcomponents may be a separate and distinct component according to various aspects of the present disclosure. In other examples, the UE 715 data session manager and / or at least some of its various subcomponents can be combined with one or more other hardware components, including but not limited to an I / O component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof in accordance with various aspects of the present disclosure.
[00116] The UE 715 data session manager can establish a first data session with a first network UPF, receive (for example, through receiver 710) a request to establish a second data session with the network, and in response to receiving the message, establish a second data session with a second network UPF. The UE 715 data session manager can also identify that a user plan for a first data session with a network must be reallocated from a first UPF, initiate a modification of the first data session to be reallocated using an ID associated with
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49/82 first data session, and receive a confirmation of the reallocation of the first data session to a second UPF.
[00117] The transmitter 720 can transmit signals generated by other components of the device. In some examples, transmitter 720 can be placed with a receiver 710 in a transceiver module. For example, transmitter 720 may be an example of aspects of transceiver 1035 described with reference to Figure 10. Transmitter 720 may include a single antenna, or may include a set of antennas. In some cases, transmitter 720 may transmit the NAS transport message to the first central network entity.
[00118] Figure 8 shows a block diagram 800 of a wireless device 805 that supports relocation of user plan to a UE with different modes of continuity of service and session in accordance with one or more aspects of the present disclosure. The wireless device 805 can be an example of aspects of a wireless device 705 or an UE 115 as described with reference to Figures 1 to 6 and 7. The wireless device 805 can include receiver 810, UE data session manager 815, and transmitter 820. The wireless device 805 can also include a processor. Each of these components can be in communication with each other (for example, through one or more buses).
[00119] The 810 receiver can receive information such as packages, user data, or control information associated with various information channels (for example, control channels,
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50/82 data, and information or messages related to user plan reallocation). The information can be passed on to other components of the device. Receiver 810 can be an example of aspects of transceiver 1035 described with reference to Figure 10.
[00120] The UE 815 data session manager can be an example of aspects of the UE 1015 data session manager described with reference to Figure 10. The UE 815 data session manager can also include an identification component data session 825, data session initiation / modification component 830, and data session establishment component 835.
[00121] The data session identification component 825 can identify that the user plan of a first data session with the network must be reallocated from the first UPF to the second UPF. Data session identification component 825 may, in some instances, identify that a PDU session on the wireless device and may identify that the PDU session should be relocated, such as by receiving a request from an SMF for establish a new PDU session. In some cases, the request may include a first data session correlation ID.
[00122] The 830 data session initiation / modification component can initiate a second data session. In some cases, the 830 data session initiation / modification component may initiate the second data session using an ID associated with the first data session. In some
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In 51/82 cases, the initiation of the second data session can be performed responsive to the receipt of the request from the SMF. In some cases, the second data session can be initiated by transmitting a request to establish a session from the PDU to the network to establish the second data session that includes one or more of the first data session identification of the first data session, or a first data session correlation identification. In some cases, the PDU session establishment request may include an indication that the PDU session establishment is for a user plan reallocation.
[00123] The 830 data session initiation / modification component may, in some cases, initiate a modification of the first data session to be relocated using an identification associated with the first data session. Such a modification can be initiated, for example, by transmitting a PDU session modification request to relocate the first data session, the PDU session modification request including a first data session identification of the first data session . In some cases, the PDU session modification request may include a first data session correlation ID.
[00124] The 835 data session establishment component can establish the first data session as a first PDU session with a first UPF and can respond to the initiation of the second data session and / or respond to the receipt of the request from from SMF,
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52/82 establish the second data session with a second UPF. In some cases, the 835 data session establishment component may release, after the second data session is established, the first data session with the first UPF. In some cases, an acknowledgment can be received from the network that the second data session is established, and user plan information associated with the second data session can be received from the second UPF. In cases where the first data session is modified to be relocated from the first UPF to the second UPF, a confirmation of the reallocation of the first data session to a second UPF can be received.
[00125] The transmitter 820 can transmit signals generated by another component of the device. In some instances, the 820 transmitter can be placed with a
810 receiver in a transceiver module. For example, O transmitter 820 can be an example of aspects of transceiver 1035 described with reference to Figure 10. 0 transmitter 820 can include a single antenna, or can
include a set of antennas.
[00126] Figure 9 shows a block diagram 900 of a UE 915 data session manager that supports user plan reallocation to a UE with different modes of service continuity and session according to one or more aspects of this disclosure. The UE 915 data session manager can be an example of aspects of an UE 715 data session manager, an UE 815 data session manager, or an UE 1015 data session manager described with reference to Figures 7, 8,
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53/82 and 10. The data session manager of UE 915 may include data session identification component 920, data session initiation / modification component 925, data session establishment component 930, and identification component relocating 935. Each of these modules can communicate, directly or indirectly, with each other (for example, through one or more buses).
[00127] The data session identification component 920 can identify that the user plan of the first data session with the network must be reallocated from the first UPF to the second UPF. The data session identification component 920 may, in some instances, identify that a PDU session on the wireless device and may identify that the PDU session should be relocated, such as by receiving a request from an SMF to establish a new PDU session. In some cases, the request may include a first data session correlation ID.
[00128] The 925 data session initiation / modification component can initiate a second data session. In some cases, the 925 data session initiation / modification component may initiate the second data session using an identification associated with the first data session. In some cases, the initiation of the second data session may be carried out responding to the receipt of the request from the SMF. In some cases, the second data session can be initiated by transmitting a request for
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54/82 PDU session establishment for establishing the second data session which includes one or more of the first data session identification of the first data session or a first data session correlation identification. In some cases, the PDU session establishment request may include an indication that the PDU session establishment is for a user plan reallocation.
[00129] The data session initiation / modification component 925 may, in some cases, initiate a modification of the first data session to be relocated using an identification associated with the first data session. Such a modification can be initiated, for example, by transmitting a PDU session modification request to relocate the first data session, the PDU session modification request including a first data session identification of the first data session . In some cases, the PDU session modification request may include a first data session correlation ID.
[00130] The 930 data session establishment component can establish the first data session as a first PDU session with a first UPF and can respond to the initiation of the second data session and / or respond to the receipt of the request from SMF, establish the second data session with a second UPF. In some cases, the 930 data session establishment component may release the first data session with the first UPF after establishing the second
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55/82 data session. In some cases, an acknowledgment can be received from the network that the second data session is established, and user plan information associated with the second data session can be received from the second UPF. In cases where the first data session is modified to be relocated from the first UPF to the second UPF, a confirmation of the reallocation of the first data session to a second UPF can be received.
[00131] The relocation identification component 935 can receive a request from an SME to relocate the first data session. In some cases, the request from the SMF may be a request to establish a second data session and the relocation identification component 935 may transmit a session establishment request from the PDU that includes the first data session identification. In some cases, the request may include an indication that the PDU session modification request is for a user plan reallocation. In cases where the first data session is to be modified, the PDU session change request can be transmitted. In some cases, an SMF may request that the PDU session be relocated, and the relocation identification component 935 may transmit the session establishment request or session change request that includes one or more of the first session's ID PDU session, an indication of the cause of a user plan reallocation, or a PDU Session Correlation ID.
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56/82 [00132] Figure 10 shows a diagram of a system 1000 including a device 1005 that supports user plan reallocation to a UE with different modes of service and session continuity according to one or more aspects of the present disclosure. The device 1005 can be an example of or include the wireless device components 705, wireless device 805, or an UE 115 as described above, for example, with reference to Figures 1 to 6, 7 and 8. Device 1005 can include components for bidirectional voice communications and data including components for transmitting and receiving communications, including UE 1015 data session manager, processor 1020, memory 1025, software 1030, transceiver 1035, antenna 1040, and I / O controller 1045. These components can be in electronic communication via one or more buses (for example, bus 1010). Device 1005 can communicate wirelessly with one or more base stations 105.
[00133] The 1020 processor may include an intelligent hardware device, (for example, a general purpose processor, a DSP, a central processing unit (CPU), a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate logic component or transistor, a discrete hardware component, or any combination thereof). In some cases, the 1020 processor can be configured to operate a memory array using a memory controller. In other cases, a memory controller can be integrated into the 1020 processor. The 1020 processor can be configured to run
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57/82 computer-readable instructions stored in a memory to perform various functions (for example, functions or tasks that support user plan reallocation to a UE with different modes of service and session continuity).
[00134] Memory 1025 may include random access memory (RAM) and read-only memory (ROM). The 1025 memory can store computer-readable, computer-executable software 1030 including instructions that, when executed, cause the processor to perform various functions described here. In some cases, the 1025 memory may contain, among other things, a basic input / output system (BIOS) that can control basic hardware and / or software operation such as interaction with peripheral components or devices.
[00135] Software 1030 may include code to implement aspects of this disclosure, including code to support NAS transport for non-mobility management messages. The 1030 software can be stored in a non-transitory, computer readable medium such as system memory or other memory. In some cases, the 1030 software may not be directly executable by the processor but may cause a computer (for example, when compiled and run) to perform the functions described here.
[00136] Transceiver 1035 can communicate bidirectionally, through one or more antennas, wired or wireless, as described above. For example, the 1035 transceiver can represent a wireless transceiver and
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58/82 can communicate bidirectionally with another wireless transceiver. The transceiver 1035 may also include a modem to modulate the packets and supply the modulated packets to the antennas for transmission, and to demodulate the packets received from the antennas.
[00137] In some cases, the wireless device may include a single 1040 antenna. However, in some cases the device may have more than one 1040 antenna, which may be able to simultaneously transmit or receive multiple wireless transmissions.
[00138] The I / O controller 1045 can manage input and output signals for the device 1005.1 / 0 The 1045 controller can also manage peripherals not integrated with the device 1005. In some cases, the I / O controller 1045 can represent a physical connection or port to an external device. In some cases, the 1045 I / O controller can use an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS / 2®, UNIX®, LINUX® or other known operating system. In other cases, the 1045 I / O controller can represent or interact with a modem, keyboard, mouse, touchscreen, or similar device. In some cases, the 1045 I / O controller can be implemented as part of a processor. In some cases, a user can interact with device 1005 through the 1045 I / O controller or through hardware components controlled by the 1045 I / O controller.
[00139] Figure 11 shows a 1100 block diagram of a 1105 wireless device that supports
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59/82 relocation of user plan to a UE with different modes of continuity of service and session in accordance with one or more aspects of this disclosure. Wireless device 1105 can be an example of central network aspects 130 as described with reference to Figures 1 to
6. For example, wireless device 1105 can be an example of aspects of an SMF 120 on the central network described with reference to Figure 1 or SMF 215 described with reference to Figures 2 to 6. Wireless device 1105 can include receiver 1110 , central data session manager 1115, and transmitter 1120. The wireless device 1105 may also include a processor. Each of these components can be in communication with each other (for example, through one or more buses).
[00140] Receiver 1110 can receive information such as packages, user data, or control information associated with various information channels (for example, control channels, data channels, and information related to user plan relocation). The information can be passed on to other components of the device. Receiver 1110 can be an example of aspects of transceiver 1435 described with reference to Figure 14.
[00141] Central data session manager 1115 can be an example of aspects of central data session manager 1415 described with reference to Figure 14. Central data session manager 1115 and / or at least At least some of its various subcomponents can be implemented in hardware,
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60/82
software executed per one processor, firmware, or any combination From me smos. If implemented in software executed per one processor, the functions gives manager of session of Dice in central network 1115 and / or at
at least some of its various subcomponents can be performed by a general purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate logic or transistor, discrete hardware components, or any combination of them designed to perform the functions described in this disclosure.
[00142] The central network data session manager 1115 and / or at least some of its various subcomponents can be physically located in various positions, including being distributed such that portions of functions are implemented in different physical locations by one or more devices physicists. In some examples, the central network data session manager 1115 and / or at least some of its various subcomponents may be a separate and distinct component according to various aspects of the present disclosure. In other examples, the 1115 core data session manager and / or at least some of its various subcomponents may be combined with one or more other hardware components, including but not limited to an I / O component, a transceiver , a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof in accordance with various aspects of the present disclosure.
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61/82 [00143] The central network data session manager 1115 can determine that a user plan for a first data session of a UE must be reallocated far from a first UPF, and perform a plan plan reallocation user of the first data session by establishing a second data session in a second UPF. The central network data session manager 1115 can also determine that a user plan for a first UE data session must be reallocated far from a first UPF, and perform a user plan reallocation of the first data session. data by modifying the first data session to be served by a second UPF.
[00144] The 1120 transmitter can transmit signals generated by other components of the device. In some examples, transmitter 1120 can be placed with a receiver 1110 in a transceiver module. For example, transmitter 1120 can be an example of aspects of transceiver 1435 described with reference to Figure 14. Transmitter 1120 can include a wired or wireless connection that can include a single antenna, or can include a set of antennas.
[00145] Figure 12 shows a block diagram 1200 of a wireless device 1205 that supports relocation of user plan to a UE with different modes of continuity of service and session in accordance with one or more aspects of the present disclosure. The wireless device 1205 can be an example of aspects of a wireless device 1105 or a central network entity 130 as described with reference to Figures 1 to 6
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62/82 and 11. For example, the wireless device 1205 can be an example of aspects of an SMF described with reference to Figures 1 to 6 and 11. The wireless device 1205 can include receiver 1210, data session manager. central network 1215, and transmitter 1220. The wireless device 1205 can also include a processor. Each of these components can be in communication with each other (for example, through one or more buses).
[00146] Receiver 1210 can receive information such as packages, user data, or control information associated with various information channels (for example, control channels, data channels, and information related to user plan relocation). The information can be passed on to other components of the device. Receiver 1210 can be an example of aspects of transceiver 1435 described with reference to Figure 14.
[00147] The central data session manager 1215 can be an example of aspects of the central data session manager 1415 described with reference to Figure 14. The central data session manager 1215 can also include manager relocation request 1225, and 1230 data session initiation / modification component.
[00148] Relocation request manager 1225 can determine that a user plan for a first UE data session should be reallocated far from a first UPF. In some cases, the 1320 relocation request manager may receive a request from a UE to establish a
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63/82 second data session, the request including a first data session identification, and may determine that the request requires a remote UPF relocation from a first UPF serving the first data session based at least in part in the first data session identification provided by the UE.
[00149] In some cases, the relocation request manager 1225 may receive a request from a UE to modify a first data session, the request including a first data session identification, and determine that the request requires a relocation of distant UPF from the first UPF serving the first data session based at least in part on the first data session identification provided by the UE. In some cases, the relocation request manager 1225 may receive, in the request from the UE, an indication of the cause that the second data session establishment is for a user plan relocation.
[00150] The 1230 data session initiation / modification component can perform a user plan reallocation of the first data session by establishing a second data session in a second UPF. The 1230 data session initiation / modification component can also perform a user plan reallocation of the first data session by modifying the first data session to be served by a second UPF. In some cases, a request can be sent to the UE to establish a second
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64/82 data session. In some cases, the 1230 data session initiation / modification component can also trigger a session release on the first UPF.
[00151] The transmitter
1220 can transmit signals generated by another component of the device. In some examples, transmitter 1220 can be placed with a receiver 1210 in a transceiver module. For example, transmitter 1220 may be an example of aspects of transceiver 1435 described with reference to Figure 14. Transmitter 1220 may include a single antenna, or may include a set of antennas.
[00152] Figure 13 shows a block diagram 1300 of a data session manager of the central network entity 1315 that supports user plan reallocation to a UE with different modes of service continuity and session according to one or more aspects of this disclosure. The data session manager of the central network entity 1315 can be an example of aspects of a data session manager of the central network 1415 described with reference to Figures 11, 12, and 14. The data session manager of the data entity core network 1315 may include relocation request manager 1320, 1325 data session initiation / modification component, UPF 1330 identification component, 1335 data session establishment component, 1340 relocation identification component, and allocation component of IP address 1345. Each of these modules can communicate, directly or indirectly, with each other (for example, through one or more buses).
[00153] The relocation request manager
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1320 can determine that a user plan for a first UE data session must be relocated far from a first UPF. In some cases, the 1320 relocation request manager may receive a request from a UE to establish a second data session, the request including a first data session identification, and may determine that the request requires a reallocation of data. Distant UPF from a first UPF serving the first data session based at least in part on the first data session identification provided by the UE.
[00154] In some cases, the 1320 relocation request manager may receive a request from a UE to modify a first data session, the request including a first data session identification, and determine that the request requires a relocation of distant UPF from the first UPF serving the first data session based at least in part on the first data session identification provided by the UE. In some cases, the 1320 relocation request manager may receive, in the request from the UE, an indication of the cause that the second data session establishment is for a user plan relocation.
[00155] The 1325 data session initiation / modification component can perform a user plan reallocation of the first data session by establishing a second data session in a second UPF. The initiation / modification component of
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66/82 data session 1325 can also perform a user plan reallocation of the first data session by modifying the first data session to be served by a second UPF. In some cases, a request may be sent to the UE to establish a second data session. In some cases, the 1325 data session initiation / modification component may also trigger a session release on the first UPF.
[00156] The UPF 1330 identification component can select the second UPF for the second data session or the first modified data session, and transmit the user plan information associated with the second UPF to the UE. The 1335 data session establishment component can establish the second data session with the second UPF.
[00157] The relocation identification component 1340 can identify a first data session correlation identification in the request to establish a second data session. In some cases, the relocation identification component 1340 may transmit user plan information associated with the second data session and the second UPF to the UE. The IP address allocation component 1345 can allocate IP addresses to the UE.
[00158] Figure 14 shows a diagram of a system 1400 including a device 1405 that supports relocation of user plan to a UE with different modes of continuity of service and session according to one or more aspects of the present disclosure. Device 1405 can be an example of or include the components of
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identity of network central (per example, SMF 120) as described above , per example, with reference to Figure 1 . 0 device 1405 can include components for
bidirectional voice communications and data including components for transmitting and receiving communications, including data center manager session 1415, processor 1420, memory 1425, software 1430, transceiver 1435, and I / O controller 1440. These components can be in electronic communication through one or more buses (for example, bus 1410).
[00159] The 1420 processor may include an intelligent hardware device, (for example, a general purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a port logic component discrete or transistor, a discrete hardware component, or any combination thereof). In some cases, the 1420 processor can be configured to operate a memory array using a memory controller. In other cases, a memory controller can be integrated into the 1420 processor. The 1420 processor can be configured to execute computer-readable instructions stored in memory to perform various functions (for example, functions or tasks that support user plan relocation to UE with different modes of continuity of service and session).
[00160] Memory 1425 can include RAM and ROM. The 1425 memory can store computer-readable, computer-executable 1430 software including instructions that, when executed,
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68/82 processor performs several functions described here. In some cases, memory 1425 may contain, among other things, a BIOS that can control basic hardware and / or software operation such as interaction with peripheral components or devices.
[00161] Software 1430 may include code to implement aspects of this disclosure, including code to support NAS transport for non-mobility management messages. The 1430 software can be stored on a non-transitory, computer readable medium such as system memory or other memory. In some cases, the 1430 software may not be directly executable by the processor but may cause a computer (for example, when compiled and run) to perform the functions described here.
[00162] Transceiver 1435 can communicate bidirectionally, through one or more antennas, wired or wireless, as described above. For example, the 1435 transceiver can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The 1435 transceiver may also include a modem to modulate the packets and supply the modulated packets to the antennas for transmission, and to demodulate the packets received from the antennas.
[00163] The 1440 I / O controller can manage input and output signals for the 1405 device. The 1440 I / O controller can also manage peripherals not integrated with the 1405 device. In some cases, the 1440 I / O controller it can represent a physical connection or port to an external peripheral. In
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69/82 In some cases, the 1440 I / O controller can use an operating system such as iOS®, ANDROID®, MS-DOSO, MS-WINDOWS®, OS / 2®, UNIX®, LINUX ® or other known operating system. In other cases, the 1440 I / O controller can represent or interact with a modem, keyboard, mouse, touchscreen or similar device. In some cases, the 1440 I / O controller can be implemented as part of a processor. In some cases, a user can interact with device 1405 through the I / O controller 1440 or through hardware components controlled by the I / O controller 1440.
[00164] Figure 15 shows a flowchart that illustrates a 1500 method for reallocating the user plan to a UE with different modes of continuity of service and session according to one or more aspects of this disclosure. Method 1500 operations can be implemented by a UE 115 or its components as described here. For example, method 1500 operations can be performed by a UE data session manager as described with reference to Figures 7 to 10. In some examples, a UE 115 can execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 can perform aspects of the functions described below using special-purpose hardware.
[00165] In 1505, the UE 115 can establish a first data session with a first UPF of a network. 1505 operations can be performed according to
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70/82 with the methods described with reference to Figures 1 to 6. In certain examples, aspects of the 1505 operations can be performed by a data session initiation / modification component and / or data session establishment component such as described with reference to Figures 7 to 10.
[00166] In 1510, the UE 115 may receive a request to establish a second data session with the network. The 1510 operations can be performed according to the methods described with reference to Figures 1 to 6. In certain examples, aspects of the 1510 operations can be performed by a receiver and / or a data session identification component as described with reference to Figures 7 to 10.
[00167] In 1515, the UE 115 can establish the second data session with a second UPF. The 1515 operations can be performed according to the methods described with reference to Figures 1 to 6. In certain examples, aspects of the 1515 operations can be performed by a data session establishment component as described with reference to Figures 7 to 10.
[00168] Figure 16 shows a flow chart illustrating a 1600 method for reallocating the user plan to a UE with different modes of service continuity and session in accordance with one or more aspects of this disclosure. Method 1600 operations can be implemented by a central network entity (for example, SMF) or its components as described here. For example, method 1600 operations can be performed by a central data session manager as
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71/82 described with reference to Figures 11 to 14. In some examples, a central network entity may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the central network entity can perform aspects of the functions described below using special-purpose hardware.
[00169] In 1605, the central network entity can determine that a user plan of a first data session of a UE must be reallocated far from a first UPF. 1605 operations can be performed according to the methods described with reference to Figures 1 to 6. In certain examples, aspects of 1605 operations can be performed by a relocation request manager as described with reference to Figures 11 to 14 .
[00170] In 1610, the central network entity can perform a user plan reallocation of the first data session by establishing a second data session in a second UPF. 1610 operations can be performed according to the methods described with reference to Figures 1 to 6. In certain examples, aspects of 1610 operations can be performed by a data session initiation / modification component as described with reference to Figures 11 to 14.
[00171] Figure 17 shows a flowchart that illustrates a 1700 method for reallocating the user plan to a UE with different modes of service continuity and session according to one or more aspects of
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72/82 present disclosure. Method 1700 operations can be implemented by a UE 115 or its components as described here. For example, method 1700 operations can be performed by a UE data session manager as described with reference to Figures 7 to 10. In some examples, a UE 115 can execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 can perform aspects of the functions described below using special-purpose hardware.
[00172] In 1705, UE 115 can identify that a first data session needs to be released and a new second data session needs to be established in order to reallocate a user plan for a first data session with a network from a first UPF to a second UPF serving the second data session. 1705 operations can be performed according to the methods described with reference to Figures 1 to 6. In certain examples, aspects of 1705 operations can be performed by a data session identification component as described with reference to Figures 7 to 10.
[00173] In 1710, the UE 115 can initiate a modification of the first data session to be relocated using an identification associated with the first data session. 1710 operations can be performed according to the methods described with reference to Figures 1 to 6. In certain examples, aspects of 1710 operations can be performed by a
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73/82 data session initiation / modification component as described with reference to Figures 7 to 10.
[00174] In 1715, the UE 115 can receive a confirmation of the reallocation of the first data session to a second UPF. 1715 operations can be performed according to the methods described with reference to Figures 1 to 6. In certain examples, aspects of 1715 operations can be performed by a data session establishment component as described with reference to Figures 7 to 10.
[00175] Figure 18 shows a flow chart that
illustrates an 1800 method for plan reallocation user for a flow chart that illustrates a 1800 method to the plan reallocation user to a UE with
different modes of continuity of service and session in accordance with one or more aspects of this disclosure. Method 1800 operations can be implemented by a central network entity (for example, SMF) or its component as described here. For example, method 1800 operations can be performed by a central data session manager as described with reference to Figures 11 to 14. In some examples, a central network entity can execute a set of codes to control the elements functionalities of the device to perform the functions described below. Additionally or alternatively, the central network entity can perform aspects of the functions described below using special-purpose hardware.
[00176] In 1805, the central network entity can determine that a user plan of a first
Petition 870190091990, of 16/09/2019, p. 77/114
74/82 data session from a UE must be relocated far from a first UPF. 1805 operations can be performed according to the methods described with reference to Figures 1 to 6. In certain examples, aspects of 1805 operations can be performed by a relocation request manager as described with reference to Figures 11 to 14 .
[00177] In 1810, the central network entity can reallocate the user plan of the first data session by modifying the first data session to be served by a second UPF. 1810 operations can be performed according to the methods described with reference to Figures 1 to 6. In certain examples, aspects of 1810 operations can be performed by a data session initiation / modification component as described with reference to Figures 11 to 14.
[00178] It should be noted that the methods described above describe possible implementations, and that operations can be rearranged or otherwise modified and that other implementations are possible. In addition, aspects of two or more of the methods can be combined.
[00179] The techniques described here can be used for various wireless communication systems, such as CDMA, TDMA, FDMA, OFDMA, single-carrier frequency division multiple access (SC-FDMA) and other systems. The terms system and network are often used interchangeably. A CDMA system can implement radio technology such as CDMA2000, Land Access
Petition 870190091990, of 16/09/2019, p. 78/114
75/82
Universal Radio (UTRA), etc. CDMA2000 covers the IS-2000, IS-95 and IS-856 standards. IS-2000 versions can be commonly called CDMA2000 IX, IX, etc. IS-856 (TIA856) is commonly referred to as CDMA2000 IxEV-DO, High Rate Packet Data (HRPD), etc. UTRA includes broadband CDMA (WCDMA) and other variants of CDMA. A TDMA system can implement radio technology like the Global Mobile Communications System (GSM).
[00180] An OFDMA system can implement radio technology such as Ultra Mobile Broadband (UMB), UTRA Evolved (E-UTRA), Institute of Electrical and Electronic Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX ), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are part of the universal mobile telecommunications system (UMTS). 3GPP LTE and LTE-A are versions of UMTS that use E-UTRA. UTRA, EUTRA, UMTS, LTE, LTE-A, NR and GSM are described in documents the organization called Partnership Project 3 Generation (3GPP). CDMA2000 and UMB are described in documents from an organization named Partnership Project 3 Generation 2 (3GPP2). The techniques described here can be used for the radio systems and technologies mentioned above, as well as for other radio systems and technologies. Although aspects of an LTE or NR system can be described for example, and LTE or NR terminology can be used in much of the description, the techniques described here are applicable in addition to LTE or NR applications.
[00181] In LTE / LTE-A networks, including the networks described here, the term evolved B node (eNB) can generally be used to describe base stations. O
Petition 870190091990, of 16/09/2019, p. 79/114
76/82 wireless communications systems or systems described herein may include a heterogeneous LTE / LTE-A or NR network in which different types of eNBs provide coverage for various geographic regions. For example, each eNB, gNB or base station can provide communication coverage for a macro cell, a small cell or other types of cell. The term cell can be used to describe a base station, a carrier or component carrier associated with a base station, or a coverage area (e.g., sector) of a carrier or base station, depending on the context.
[00182] Base stations may include or be referred to by persons skilled in the art as a base transceiver station, a radio base station, an access point, a radio transceiver, a NodeB, eNB, the next generation of NodeB ( gNB), the NodeB Domiciliar, an eNodeB Domiciliar or some other suitable terminology. The geographic coverage area of a base station can be divided into sectors, making up only part of the coverage area. The wireless communications system or systems described herein may include base stations of different types (for example, macro base stations or small cells). The UEs described herein may be able to communicate with various types of base stations and network equipment, including macro eNBs, small cell eNBs, gNBs, relay base stations and the like. There may be overlapping geographic coverage areas for different technologies.
[00183] A macro cell generally covers a relatively large geographical area (for example, several
Petition 870190091990, of 16/09/2019, p. 80/114
77/82 kilometers in radius) and can allow unrestricted access by UEs with service subscriptions with the network provider. A small cell is a lower power base station, compared to a macro cell, which can operate in the same or different (for example, licensed, unlicensed) frequency bands such as macrocells. Small cells can include pico cells, femto cells and microcells according to several examples. A peak cell, for example, can cover a small geographical area and can allow unrestricted access by UEs with service subscriptions with the network provider. A femto cell can also cover a small geographic area (for example, a house) and can provide restricted access by UEs that have an association with the femto cell (for example, UEs in a closed subscriber group (CSG), UEs for users at home, and similar). An eNB for a macro cell can be referred to as an eNB macro. An eNB for a small cell can be referred to as a small cell eNB, eNB peak, eNB femto or origin eNB. An eNB can support one or more cells (for example, two, three, four and the like) (for example, component carriers).
[00184] The wireless communications system or systems described here can support synchronous or asynchronous operation. For synchronous operation, base stations can have similar frame timing, and transmissions from different base stations can be approximately time aligned. For asynchronous operation, base stations may have different frame timings and transmissions from different base stations may not be time aligned. The techniques described here can be
Petition 870190091990, of 16/09/2019, p. 81/114
78/82 used for synchronous or asynchronous operations.
[00185] The downlink transmissions described here can also be called direct link transmissions while uplink transmissions can also be called reverse link transmissions. Each communication link described here, including, for example, wireless communication system 100 and wireless communication system architecture 200 of Figures 1 and 2 can include one or more carriers, where each carrier can be a signal consisting of several subcarriers (for example, waveform signals of different frequencies).
[00186] The description presented here, in relation to the attached drawings, describes example configurations and does not represent all examples that can be implemented or that are within the scope of the claims. The term exemplary used herein means to serve as an example, example or illustration and is not preferred or advantageous over other examples. The detailed description includes specific details for the purpose of providing an understanding of the techniques described. These techniques, however, can be practiced without these specific details. In some cases, well-known structures and devices are shown in the form of a block diagram to avoid obscuring the concepts of the examples described.
[00187] In the attached figures, components or similar characteristics may have the same reference label. In addition, several components of the same type can be distinguished by following the reference label by a dash and a second label that distinguishes between
Petition 870190091990, of 16/09/2019, p. 82/114
79/82 similar components. If only the first reference label is used in the specification, the description applies to any of the similar components that have the same first reference label, regardless of the second reference label.
[00188] The information and signals described here can be represented using any of several different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols and chips that can be referenced throughout the description above can be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
[00189] The various blocks and illustrative modules described in connection with this disclosure can be implemented or executed with a general purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic, component discrete hardware or any combination thereof designed to perform the functions described here. A general purpose processor can be a microprocessor, but, alternatively, the processor can be any processor, controller, microcontroller or conventional state machine. A processor can also be implemented as a combination of computing devices (for example, a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other configuration).
Petition 870190091990, of 16/09/2019, p. 83/114
80/82 [00190] The functions described here can be implemented in hardware, software executed by a processor, firmware or any combination thereof. If implemented in software run by a processor, functions can be stored or transmitted as one or more instructions or code in a computer-readable medium. Other examples and implementations are within the scope of the disclosure and attached claims. For example, due to the nature of the software, the functions described above can be implemented using software executed by a processor, hardware, firmware, hardwiring or combinations of any of them. Resources that implement functions can also be physically located in various positions, including being distributed so that parts of functions are implemented in different physical locations. In addition, as used here, including in the claims, or as used in a list of items (for example, a list of items preceded by a phrase such as at least one of or one or more of) indicates an inclusive list such that, for For example, a list of at least one of A, B or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Also, as used here, the phrase based on should not be interpreted as a reference to a closed set of conditions. For example, an exemplary operation that is described as based on condition A can be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, as used here, the phrase based on must be interpreted in the same way as the phrase based, at least
Petition 870190091990, of 16/09/2019, p. 84/114
81/82 less in part on.
[00191] Computer-readable media includes both non-transitory computer storage media and communication media, including any means that facilitates the transfer of a computer program from one place to another. A non-transitory storage medium can be any available medium that can be accessed by a general purpose or special use computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, EEPROM memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any another non-transitory medium that can be used to transport or store the desired program code means in the form of instructions or data structures and that can be accessed by a general purpose or special use computer, or a general purpose or use processor Special. In addition, any connection is appropriately called a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technologies, such as infrared, radio and microwave, are included in the media definition. Floppy and disc, as used here, include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disc and Blu-ray disc, where discs
Petition 870190091990, of 16/09/2019, p. 85/114
82/82 generally reproduce data magnetically, while discs reproduce data optically with lasers. The combinations of the items above are also included in the scope of computer-readable media.
[00192] The description here is provided to allow a person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and concepts described here, but must be in accordance with the broader scope consistent with the innovative principles and characteristics described here.

权利要求:
Claims (30)
[1]
1. Method for wireless communication, comprising:
establish, by a user equipment (UE), a first data session with a first user plan function (UPF) of a network;
receiving a request at the UE to establish a second data session with the network; and establish, by the UE and in response to receiving the request, the second data session with a second network UPF.
[2]
A method according to claim 1, further comprising:
release, after establishing the second data session, the first data session with the first UPF.
[3]
A method according to claim 1, wherein establishing the second data session comprises:
transmitting to the network a protocol data unit (PDU) session establishment request for establishing the second data session that includes a data session identification associated with the first data session.
[4]
4. Method according to claim 3, in which establishing the second data session with the second UPF further comprises:
transmit an indication that the PDU session establishment request is for a user plan reallocation.
[5]
5. Method according to claim 4, further comprising:
Petition 870190091990, of 16/09/2019, p. 87/114
2/6 receive an acknowledgment from the network that the second data session is established; and receive user plan information associated with the second data session from the second UPF.
[6]
A method according to claim 1, wherein the first data session is established as a first protocol data unit (PDU) session with the first UPF.
[7]
7. Method according to claim 1, in which the request is received from a network session management function (SMF).
[8]
8. Method according to claim 1, wherein the request includes a first data session correlation identification.
[9]
9. Method for wireless communication, comprising:
determining that a user plan for a first user equipment (UE) data session is relocated far from a first user plan function (UPF); and perform a user plan reallocation of the first data session by establishing a second data session in a second UPF.
[10]
A method according to claim 9, further comprising:
send the UE a request to establish the second data session.
[11]
11. Method according to claim 10, wherein the request to establish the second session of
Petition 870190091990, of 16/09/2019, p. 88/114
3/6 data includes a first data session correlation identification.
[12]
12. Method, according to claim 9, in which reallocating the user plan comprises:
receiving a request from the UE to establish the second data session, the request including a first data session identification;
determining that the request requires a remote UPF reallocation from the first UPF serving the first data session based at least in part on the first data session identification provided by the UE; and establish the second data session with the second UPF.
[13]
13. Method according to claim 12, in which determining that the request requires UPF reallocation comprises:
receive, in the request from the UE, a cause indication that the second data session establishment is for a user plan reallocation.
[14]
14. The method of claim 9, further comprising:
establish a connection with the second UPF.
[15]
A method according to claim 14, further comprising:
transmit to the UE user plan information associated with the second data session and the second UPF.
[16]
16. Method, according to claim 9, in which the method is performed in a function of management of
Petition 870190091990, of 16/09/2019, p. 89/114
4/6 session (SMF) of a network.
[17]
17. Apparatus for wireless communication, comprising:
means for establishing, by a user equipment (UE), a first data session with a first user plan function (UPF) of a network;
means for receiving, at the UE, a request to establish a second data session with the network; and means to establish, by the UE and in response to the receipt of the request, the second data session with a second network UPF.
[18]
18. Apparatus according to claim 17, further comprising:
means for releasing, after the establishment of the second data session, the first data session with the first UPF.
[19]
19. Apparatus according to claim 17, wherein the means for establishing the second data session comprises:
means for transmitting a protocol data unit (PDU) session establishment request to the network for establishing the second data session which includes a data session identification associated with the first data session.
[20]
20. Apparatus according to claim 19, wherein the means for establishing the second data session with the second UPF further comprises:
means for transmitting an indication that the PDU session establishment request is for a user plan reallocation.
Petition 870190091990, of 16/09/2019, p. 90/114
5/6
[21]
21. The apparatus of claim 20, further comprising:
means for receiving an acknowledgment from the network that the second data session is established; and means for receiving user plan information associated with the second data session from the second UPF.
[22]
22. Apparatus, according to the claim in which the first data session is established as a first protocol data unit (PDU) session with the first UPF.
[23]
23. Device according to the claim that the request is received from a network session management (SMF) function.
[24]
24. An apparatus according to claim 17 wherein the request includes a first data session correlation identification.
[25]
25. Apparatus for wireless communication, comprising:
means for determining that a user plan for a first user equipment (UE) data session should be relocated far from a first user plan function (UPF); and means for performing a user plan reallocation of the first data session by establishing a second data session in a second UPF.
[26]
26. The apparatus of claim 25, further comprising:
means to send the UE a request to
Petition 870190091990, of 16/09/2019, p. 91/114
6/6 establish the second data session.
[27]
27. Apparatus according to claim 26, wherein the request to establish the second data session includes a first data session correlation identification.
[28]
28. Apparatus according to claim
25, in which the means for reallocating the user plan include:
means for receiving a request from the UE to establish the second data session, the request including a first data session identification;
means for determining that the request requires a remote UPF reallocation from the first UPF serving the first data session based at least in part on the first data session identification provided by the UE; and means for establishing the second data session with the second UPF.
[29]
29. Apparatus according to claim 28, wherein the means for determining that the request requires UPF reallocation comprises:
means to receive, on request from the
UE, a cause indication that the second data session establishment is for a user plan reallocation.
[30]
30. Apparatus according to claim 25, further comprising:
means to establish a connection with the second
UPF.

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