method for controlling connected mode drx operations

专利摘要:
  A method on an UE (510) comprises monitoring (1104) a downlink control channel for a duration of at least a first timer and receiving (1108) an indication of a downlink or uplink transmission (605, 705, 805, 905 ) for EU. The method comprises after receiving the indication of the downlink or uplink transmission to the UE, stop (1112) from monitoring the first timer, in which after the first timer is stopped the UE does not need to monitor the downlink control channel. The method comprises performing (1116) an uplink transmission (635, 710, 830, 910) associated with the downlink or uplink transmission indicated for the UE. The method comprises starting (1120) a second timer (645, 735, 840, 935) after receiving the indication for downlink or uplink transmission to the UE, the duration of the second timer comprising a travel period and, when the second timer expires, a third timer (640, 730, 835, 930) starts (1124). The UE monitors the downlink control channel for the duration of the third timer.
公开号:BR112018014084A2
申请号:R112018014084-8
申请日:2017-01-11
公开日:2020-10-27
发明作者:Rathonyi Béla；Béla Rathonyi；Nader Ali；Ali Nader
申请人:Telefonaktiebolaget Lm Ericsson (Publ)；
IPC主号:

专利说明:

[001] [001] The present invention relates, in general, to wireless communications and, more particularly, to methods for controlling the batch reception operations in a connected manner.
[002] [002] The Narrowband Internet of Things (NB-loT) is a narrowband system (180 KHz bandwidth) that is being developed for the cellular Internet of Things (loT) by the Third Generation Partnership Project ( 3GPP). The system is based on Long Term Evolution (LTE) systems and dedicates optimized network architecture and improved indoor coverage for a large number of devices with any of the following characteristics: low transfer rate (for example, 2 Kbps); low sensitivity to delay (for example, = 10 seconds); ultra-low device cost (for example, under $ 5); and low power consumption of the device (eg 10-year battery life).
[003] [003] Each cell (for example, = 1 Km ) In this system is expected to serve thousands (for example, = 50,000) devices, such as sensors, meters, actuators and other devices. It is imperative that this system is able to provide good coverage for your devices, which are usually located in deep indoor environments (for example, underground in basements or even embedded in the walls of a building) and have limited possibility or have no possibility of charging. of battery. Although many different types of devices are envisaged, for the sake of simplicity, they will be referred to interchangeably here as user equipment (UEs) or wireless devices.
[004] [004] To enable the deployment of NB-loT using only one GSM carrier relocated (re-farmed) and to support lower manufacturing costs for NB-loT UEs, bandwidth has been reduced to a physical resource block (PRB ) of 180 KHz size divided into several subcarriers.
[005] [005] For frequency division duplexing (FDD) (that is, the transmitter and receiver operate on different carrier frequencies), only half-duplex mode needs to be supported in the UE. The lower complexity of the devices (for example, only one transmission / reception chain) means that some repetition may also be required in normal coverage. In addition, to alleviate the complexity of the UE, the assumption of work is to have cross subframe scaling: that is, a transmission is first programmed in an advanced physical downlink control channel (E-PDCCH, also known as narrowband physical downlink (NB-PDCCH or NPDCCH)). Then, the first transmission of the current data in the Shared narrowband Physical Downlink Channel (NB-PDSCH or NPDSCH) is performed after the final transmission of the NB-PDCCH. Similarly, for uplink data transmission (UL), information about resources programmed by the network and required by the UE for transmission of UL is first transmitted on the NB-PDCCH and then the first transmission of current data by the UE on the Shared Uplink Channel Narrow Band Physical (NB-PUSCH or NPUSCH) is performed after the final transmission of the NB-PDCCH. In other words, for both of the above cases, there is no simultaneous reception of the control channel and reception / transmission of the data channel from the perspective of the UE.
[006] [006] In legacy cellular communication systems such as High Speed Packet Access (HSPA) and LTE, a retransmission procedure called the Hybrid Automatic Repeat Request (HARQ) with soft combination is supported. After a block of data is transmitted in one direction (for example, between a UE and a base station), feedback on the decoding result is usually transmitted in the reverse direction, denoted as a HARQ feedback message. This feedback message is typically a result of "binary" decoding or an escalation grant / assign message. In cases where the feedback is a result of "binary" decoding, the feedback can be in the form of an acknowledgment (ACK) indicating that the decoding of the data block was successful or a negative acknowledgment (NACK) indicating that the decoding of the data block was not successful. In cases where the feedback is in the form of an escalation grant / assignment message, the escalation grant / assignment message may request a retransmission (in the case where decoding the data block is unsuccessful, similar to the described NACK above) or transmission of a new data block that implicitly recognizes that the previous data block has been successfully decoded (similar to the ACK described above).
[007] [007] In some cases, HARQ feedback information can also be indicated by no transmission (DTX). In such a scenario, no transmission means that ACK or NACK (typically the latter) and transmitting something (for example, a preamble or some other signal / code) could indicate an ACK. Failure to transmit an HARQ feedback message may also be possible to indicate a block of data successfully or unsuccessfully decoded (ie ACK or NACK). HARQ feedback (or lack thereof) then triggers retransmission or, if data is received successfully and more data is available, a new data transmission can be initiated.
[008] [008] Typically, so-called multiple HARQ processes are used in parallel (for example, in HSPA and LTE). A HARQ process is a stop-and-wait (SAW) HARQ entity that independently transfers data packets and waits for HARQ feedback before a retransmission or a new transmission is transmitted. In legacy LTE FDD, typically eight HARQ processes are supported per direction. The same applies to HSPA with a 2 ms UL transmission time interval (TTI).
[009] [009] The synchronous HARQ operation means that retransmissions occur at a fixed time after the previous transmission. In HARO asynchronous operation, on the other hand, retransmissions can occur at any time after a previous transmission. In both legacy LTE and HSPA, UL uses synchronous HARQ and downlink (DL) uses asynchronous HARQ.
[0010] [0010] To reduce UE battery consumption, a concept called connected mode discontinuous reception (DRX) is used, which allows the UE to enter standby mode (ie no reception and / or transmission is required) during the connected mode in LTE. The main idea is that when there has been no transmission and / or reception activity (for example, no transmissions / retransmissions and no pending retransmissions) for a period of time, the UE can enter standby mode and only needs to be activated periodically for a short period of time each DRX cycle to monitor the DL control channel. If new UL data is available, the UE can activate at any time, but it needs to inform the network through configured UL resources (for example, an escalation request can be triggered to be sent to the Physical Uplink Control Channel ( PUCCH)).
[0011] [0011] The DRX operation is defined in 3GPP TS 36.321, v. 13.0.0 for legacy LTE and controlled by a set of timers / parameters that are predefined or sent to the UE. Specifically: OnDurationTimer; drxStartOffset (from longDRX-CycleStartOffset on 3GPP TS 36.331, v. 13.0.0); longDRX-Cycle e (from longDRX-CycleStartOffset on 3GPP TS 36.331, v. 13.3.0);
[0012] [0012] FIGURE 1 illustrates an example of UE operation during connected DRX mode. More particularly, FIGURE 1 (which is reproduced from 3GPP TS 36.321. V. 13.0.0) illustrates when the UE needs to be activated and monitor the DL control channel (denoted as PDCCH in the example in FIGURE 1, but could be PDCCH and / or ePDCCH) during the DRX 105 connected mode cycle. In general, during the DRX 105 cycle, the UE monitors the DL control channel during the OnDuration 110 period and pauses during the Opportunity for DRX 115. If new data is programmed (in UL or DL) during the OnDuration 105 time, the UE exits the DRX and starts a timer called drx-InacthityTimer.
[0013] [0013] FIGURE 2 illustrates an example of legacy XRD operation. If new 205 data is programmed (through the DL 210 control channel), the drx- InactivityTimer 215 will be restarted, otherwise it will eventually expire and the UE will enter DRX. In the example in FIGURE 2, the UE inserts DRX after the expiration of the Drx-InactivityTimer 215 if it did not detect PDCCH during the duration of the drx-InactivityTimer 215. Additionally, FIGURE 2 illustrates the deviation 220 between the HARQ 205 data (shown in example from FIGURE 2 as "New Data" 205) and feedback from HARQ 225 (shown in FIGURE 2 as ACK 225 transmission on UL 230). In LTE, the deviation between HARQ 205 data and HARQ 225 feedback is always N + 4, that is, always 4 ms (or equivalent subframes) after data transmission at the time N.
[0014] [0014] FIGURE 3 illustrates an example of legacy XRD operation if there are DL retransmissions. In such a scenario, the UE uses two other timers: HARQ-RTT-Timer 305 and drx-RetransmissionTimer 310 to supervise the retransmission (s). Note that these timers are independent of the drx-InactivityTimer 215. When the retransmission (shown in FIGURE 3 as ReTx 315) is successfully decoded, the drx-RetransmissionTimer 310 is stopped / canceled, as shown in the example in FIGURE 3. Note that in the example of FIGURE 3, after "New Data" 205, there may be activity for other UL / DL HARQ processes signaled on the PDCCH. If new data is programmed for any of them, the drx- InactivityTimer 215 will be restarted.
[0015] [0015] FIGURE 4 illustrates an example of legacy XRD operation when there is a UL relay. In the example in FIGURE 4, the UE receives the UL 405 lease on the DL 410 control channel, while the OnDuration 410 timer is running. Upon receiving the UL 405 lease, the UE stops the OnDuration 410 timer and starts the drx-InactivityTimer 215. In the example in FIGURE 4, the UE performs the transmission of UL 420 (shown as "New Data" in the example in FIGURE 4) associated with the UL 405 concession. After performing the transmission of UL 420, the UE will enter DRX after the expiration of the drx- InactivityTimer 215 if it does not detect PDCCH for the duration of the drx- InactivityTimer 215.
[0016] [0016] In legacy LTE, no retransmission timer is required if there is a UL 425 retransmission, as synchronous HARQ is used. Synchronous HARQ provides the exact moment when HARQ feedback (for example, ACK 435 and / or NACK 430) and retransmission is programmed. A new lease on the DL 410 control channel (for example, PDCCH) could also be given in the same subframe that the NACK 430 is sent to the Physical Hybrid Indicator Channel (PHICH) and then the retransmission is called "adaptive". The N + 4 lags between the UL 405 grant and the UL 420 transmission, between the uplink 420 and NACK 430 transmission between NACK 430 and UL 425 retransmission, and the retransmission between UL 425 and ACK 435 are shown as 220a elements , 220b, 220c and 220d, respectively.
[0017] [0017] Note that in the example of FIGURE 4, after granting UL 405, there may be activity for other UL / DL HARQ processes signaled on the downlink control channel 410 (for example, PDCCH). If new data is programmed into any of these, the drx-InactivityTimer will be restarted (if used / running). Also note that, in some cases, ACK 435 can also be an implicit confirmation, for example, if a grant for new data is provided for the HARQ process.
[0018] [0018] In 3GPP Release 13, a work item for Advanced Machine Type Communication (eMTC) is in progress, in which changes have been made to HARQO operations, compared to legacy LTE. It was decided that three parallel HARQ processes are supported. In addition, the UL HARQ has been changed from synchronous to asynchronous, and the HARQ feedback is only implicit and received in M-PDCCH (ie, there is no PHICH channel) earlier than N + 4 after PUSCH transmission. As a result, changes are needed in how the UE should insert the DRX when there is a retransmission, as the HARQ feedback time is no longer fixed.
[0019] [0019] In another work item in 3GPP Release 13 related to license-assisted access (LAA), it was also identified that the UL HARQ needs to be changed from synchronous to asynchronous compared to legacy LTE. The impact of this is described in detail in 3GPP TR 36.889, v. 13.0.0 (and in particular section 7.2.2.2), which is incorporated herein by reference in its entirety.
[0020] [0020] In LTE / eMTC, all XRD parameters are configured semi-statically in the UE based on the Signaling of Resource Control of
[0021] [0021] One problem with existing approaches is that the HARQ / DRX design has been optimized for various HARQ processes and use cases where low latency is important and minimizing UE battery consumption has not been the main objective . If the same design is applied to a UE that only supports half-duplex operations, cross subframe scaling and only one HARQ process, this would result in the UE being awake longer than necessary for many traffic use cases that are typically used in MTC / loT Applications. For example, in many traffic use cases, there are no simultaneous transfers of data from UL and DL. Instead, most use cases depend on a traffic pattern request-response type in which a | P packet is sent in one direction followed by a response in the other.
[0022] [0022] In addition, according to existing approaches (both LTE and HSPA), the operation of HARQ at UL is synchronous. If the HARQ operation is changed to asynchronous, it is not known how long the UE should wait for HARQ feedback after a transmission / retransmission has been made. One approach would be to copy the DL project to UL as well (ie, introduce timers - similar (for example, “HARQ-RTT-Timer / drx- RetransmissionTimer) also to UL). While this approach may be acceptable for legacy LTE use cases, it is not suitable for use cases in the MTC / loT area. These applications involve the use of new simplified UEs with support only for half-duplex, a HARQ process and cross subframe scaling. Thus, a more optimized solution is desirable. The reason for this is that other solutions could reduce EU battery / energy consumption and therefore work better if the half-duplex properties, a HARQO process, only cross-sub-frame scaling and typical traffic patterns are used In the project.
[0023] [0023] An objective of NB-loT is to reuse legacy LTE (including eMTC changes) as much as possible. An important consideration is how the DRX operations in HARQ and connected mode should work. If the legacy project is applied to NB-loT, this will lead to higher battery / energy consumption for the UE. In addition, as all DRX-related timers are semi-static, there is very limited flexibility for eNB to schedule HARQ transmissions / retransmissions, and HARO feedbacks. If many UEs and / or UEs with different coverage levels (and therefore different transmission times) need to be met, previous approaches having semi-static parameters are not flexible enough to allow a short "active time" for the UEs . The application of the same project as in legacy LTE would require the use of higher timer values and thus the UE wake-up time would be longer, resulting in higher battery / power consumption.
[0024] [0024] To solve the previous problems with existing solutions, a method is described in a user equipment (UE). The method comprises monitoring a downlink control channel for a duration of at least one first timer. The method comprises receiving, in the monitored downlink control channel, an indication of a downlink or uplink transmission to the UE. The method comprises, after receiving the indication of downlink or uplink transmission to the UE, stop monitoring the first timer, in which after the first timer is stopped, the UE does not need to monitor the downlink control channel. The method comprises carrying out an uplink transmission associated with the downlink or uplink transmission indicated for the UE. The method comprises starting a second timer, after receiving the indication of downlink or uplink transmission to the UE, the duration of the second timer comprising a lag period. The method comprises, when the second timer expires, starting a third timer, in which the UE monitors the downlink control channel for the duration of the third timer.
[0025] [0025] In certain modalities, the second timer can be started: after performing the associated uplink transmission; or at the end of the indication received from the downlink or uplink transmission to the UE.
[0026] [0026] In certain modalities, the method may include inserting a discontinuous reception mode when the third timer expires. The method may comprise receiving a message including information about a duration of at least one of the second and third timers. In certain embodiments, the first timer can be an OnDurationTimer of a discontinuous reception cycle. In certain embodiments, at least one of the first timer and the third timer can be a drx-InactivityTimer. In certain embodiments, at least one of the first timer and the third timer may comprise a discontinuous retransmission timer. In certain embodiments, the second timer may be a Hybrid Automatic Replay Request (HARQ) Round Trip Time (RTT) timer that comprises the lag period.
[0027] [0027] In certain embodiments, the indication of downlink or uplink transmission to the UE may comprise a downlink escalation assignment, and the uplink transmission associated with the indicated downlink transmission may comprise a confirmation message. In certain embodiments, the indication of downlink or uplink transmission to the UE may comprise an uplink lease, and the uplink transmission associated with the indicated uplink transmission may comprise a data transmission on the uplink. In certain embodiments, the indication of the downlink or uplink transmission to the UE may comprise information about a duration of at least one between the second and third timers.
[0028] [0028] User equipment (UE) is also described. The UE comprises a set of processing circuits. The processing circuit is configured to monitor a downlink control channel for a duration of at least one first timer. The processing circuit is configured to receive, in the monitored downlink control channel, an indication of a downlink or uplink transmission to the UE. The processing circuit is configured to, after receiving the indication of downlink or uplink transmission to the UE, stop monitoring the first timer, where after the first timer is stopped, the UE does not need to monitor the downlink control channel. The processing circuit is configured to carry out an uplink transmission associated with the downlink or uplink transmission indicated for the UE. The processing circuit is configured to start a second timer after receiving the indication of downlink or uplink transmission to the UE, the duration of the second timer comprising a lag period. The processing circuit is configured to, when the second timer expires, start a third timer, in which the UE monitors the downlink control channel for the duration of the third timer.
[0029] [0029] A method on a network node is also described. The method comprises determining the duration of a first timer and the duration of a second timer, the first and second timers for use by a user equipment (UE) to control the batch reception operation, wherein the duration of the first timer comprises a lag period. The method comprises sending information to the UE about the duration of the first timer and the duration of the second timer.
[0030] [0030] In certain embodiments, sending information about the duration of the first timer and the duration of the second timer to the EU may include sending a message to the UE including information about the duration of the first timer and the duration of the second timer.
[0031] [0031] In certain embodiments, information about the duration of the first timer and the duration of the second timer can be included in an indication of a downlink or uplink transmission to the UE. The method may comprise sending to the UE an indication of a downlink or uplink transmission to the UE and receiving from the UE an uplink transmission associated with the indicated downlink or uplink transmission to the UE. In certain embodiments, the indication of downlink or uplink transmission to the UE may comprise a downlink scheduling assignment, and the uplink transmission associated with the indicated downlink transmission may comprise a confirmation message. In certain embodiments, the indication of downlink or uplink transmission to the UE may comprise an uplink lease, and the uplink transmission associated with the indicated uplink transmission may comprise a data transmission on the uplink.
[0032] [0032] In certain embodiments, the duration of the first timer comprises one of: an amount of time that the UE waits after sending the uplink transmission associated with the downlink or uplink transmission to the UE before the UE starts the second timer; and a period of time that the UE waits after the end of the downlink or uplink transmission indication to the UE before the UE starts the second timer. In certain embodiments, the first timer may be a Hybrid Automatic Replay Request (HARQ) Round Trip Time (RTT) timer. In certain embodiments, the duration of the second timer may comprise an amount of time that the UE monitors a control channel. downlink before entering a batch reception mode. In certain embodiments, the second timer can be a drx-InactixityTimer.
[0033] [0033] A network node is also described. The network node comprises a processing circuit. The processing circuit is configured to determine the duration of a first timer and the duration of a second timer, the first and second timers for use by a user equipment (UE) to control discontinuous reception operation, in which the duration of the first timer comprises a lag period. The processing circuit is configured to send information about the duration of the first timer and the duration of the second timer to the UE.
[0034] [0034] Certain embodiments of the present invention can provide one or more technical advantages. For example, certain modalities can advantageously reduce the EU's energy and / or battery consumption compared to existing approaches. As another way, certain modalities can advantageously reduce the time that the UE needs to be awake to monitor the downlink control channel. As yet another example, the amount of time the UE needs to be awake to monitor the downlink's control channel can be adapted to the current scheduling situation on the network node (for example, an eNB). As yet another example, because the downlink control channel in NB-loT needs to multiplex the time between the UEs and with the transmissions in the shared downlink channel, certain modalities can, with advantage, enable the multiplexing of the "active time" for the UEs, which can increase the scheduling flexibility at the network node and allow the UEs to be awake for less time (that is, durations with shorter times). Other advantages may be readily apparent to one skilled in the art. Certain modalities may not have any, some or all of the advantages mentioned. BRIEF DESCRIPTION OF THE DRAWINGS
[0035] [0035] For a more complete understanding of the described modes and their characteristics and advantages, reference is now made to the following description, taken in conjunction with the accompanying drawings, in which: FIGURE 1 illustrates an example of UE operation during mode connected DRX; FIGURE 2 illustrates an example of legacy XRD operation; FIGURE 3 illustrates an example of legacy XRD operation if there are DL retransmissions; FIGURE 4 illustrates an example of legacy XRD operation when there is a UL relay; FIGURE 5 is a block diagram illustrating an embodiment of a network 500, according to certain embodiments; FIGURE 6A illustrates a first example of timing and transmission to control XRD operations, according to certain modalities; FIGURE 6B illustrates a variation of the first example of timing and transmission to control XRD operations in FIGURE 6A, according to certain modalities;
[0036] [0036] As described above, an important consideration is how DRX and HARQ connected mode operations should work on NB-loT. Existing approaches, such as those used in legacy LTE, are not acceptable for use cases associated with NB-loT operations. For example, if the legacy project is applied to NB-loT, this will lead to a higher consumption of battery and / or energy for the UE. In addition, as all DRX-related timers are semi-static, there is very limited flexibility for eNB to schedule HARO transmissions / retransmissions, and HARQ feedbacks. If many UEs and / or UEs with different coverage levels (and therefore different transmission times) need to be met, existing approaches having semi-static parameters are not flexible enough to allow a short "active time" for the UEs . The application of existing approaches used in legacy LTE use cases for NB-loT would therefore require the use of higher timer values, which would have the undesirable consequence of increasing the amount of time that the UE should be awake and, therefore, higher battery and / or energy consumption by the UE.
[0037] [0037] The present invention contemplates several modalities that can address these and other deficiencies associated with existing approaches. In certain embodiments, deficiencies associated with existing approaches can be overcome by using a new and flexible way of manipulating / controlling "active time" (ie, the time that a UE needs to be awake to monitor a DL control channel) in the mode connected to NB-loT.
[0038] [0038] Aspects of the modalities described by the present invention are addressed to methods performed by a UE in a communication system (for example, NB-loT) that controls DRX connected mode operations and behavior for the UE and a network node ( for example, a base station / eNB). In certain embodiments, the method uses the properties of the communication capabilities of the NB-loT devices described above (for example, half-duplex, a HAROQO process, scaling of crossed subframes) and typical traffic patterns used to improve "time active "for the device (UE) in order to minimize battery and / or power consumption. Certain modalities can also advantageously introduce a flexible way of controlling operations in DRX connected mode, dynamically signaling the parameters involved.
[0039] [0039] According to an exemplary modality, a method is described in a UF. The UE monitors a DL control channel for a duration of at least one first timer. The UE receives, on the monitored DL control channel, an indication of a DL or UL transmission to the UE. After receiving the indication of DL or UL transmission to the UE, the UE stops monitoring the first timer, where after the first timer is stopped, the UE does not need to monitor the downlink control channel. The UE performs a UL transmission associated with the DL or UL transmission indicated for the UE. The UE starts a second timer, after receiving the indication for the downlink or uplink transmission to the UE, the duration of the second matrix timer comprising a lag period. In certain embodiments, the second timer can be started: after performing the associated UL transmission; or at the end of the indication received from the DL or UL transmission to the UE. When the second timer expires, the UE starts a third timer, where the UE monitors the downlink control channel for the duration of the third channel. In certain embodiments, the UE may enter a batch reception mode when the third timer expires. In certain embodiments, the UE may receive a message including information about a duration of at least one of the second and third timers.
[0040] [0040] According to another exemplary modality, a method on a network node is described. The network node determines the duration of a first timer and the duration of a second timer, the first and the second timers for use by an UE equipment to control the batch reception operation, where the duration of the first timer comprises a period lag. In certain embodiments, the duration of the first timer may comprise one of: an amount of time that the UE waits after sending the uplink transmission associated with the downlink or uplink transmission to the UE before the UE starts the second timer; and a period of time that the UE waits after the end of the downlink or uplink transmission indication to the UE before the UE starts the second timer. In certain embodiments, the duration of the second timer may comprise an amount of time that the UE monitors a DL control channel before entering a batch reception mode. The network node sends information about the duration of the first timer and the duration of the second timer to the UE. As a non-limiting example, the network node can send a message to the UE including information about the duration of the first timer and the duration of the second timer. In some cases, information about the duration of the first timer and the duration of the second timer may be included in an indication of a DL or UL transmission to the UE.
[0041] [0041] FIGURE 5 is a block diagram that illustrates a modality of a network 500, according to certain modalities. Network 500 includes one or more UE (s) 510 (which can be interchangeably referred to as wireless devices 510) and one or more network nodes 515 (which can be interchangeably referred to as eNBs 515). The UEs 510 can communicate with the network nodes 515 through a wireless interface. For example, an UE 510 can transmit wireless signals to one or more network nodes 515 and / or receive wireless signals from one or more of the network nodes 515. Wireless signals can contain voice traffic, data traffic, control signals and / or any other appropriate information. In some embodiments, a wireless signal coverage area associated with a network node 515 may be referred to as a cell 525. In some embodiments, UEs 510 may have device-to-device (D2D) capability. Thus, UEs 510 may be able to receive signals from, and / or transmit signals directly to, another UF.
[0042] [0042] In certain embodiments, network nodes 515 can interface with a radio network controller. The radio network controller can control the 515 network nodes and can provide certain radio resource management functions, mobility management functions and / or other suitable functions. In certain embodiments, the functions of the radio network controller can be included in network node 515. The radio network controller can interact with a core network node. In certain embodiments, the radio network controller can interact with the core network node via an interconnect network 520. The interconnect network 520 can refer to any interconnect system capable of transmitting audio, video, signals, data, messages or any combination of the precedents. The interconnection network 520 may include all or part of a public switched telephone network (PSTN), a public or private data network, a local area network (LAN), a metropolitan area network (MAN), a network wide area network (WAN), a computer network or local, regional or global communication, such as the Internet, a fixed or wireless network, a corporate intranet or any other appropriate communication link, including combinations thereof.
[0043] [0043] In some modalities, the core network node can manage the establishment of communication sessions and various other functionalities for the UEs 510. The UEs 510 can exchange certain signals with the core network node using the layer of layer without access. In the stratum signaling without access,
[0044] [0044] As described above, exemplary modalities of network 500 may include one or more 510 UEs and one or more different types of network nodes capable of communicating (directly or indirectly) with 510 UEs.
[0045] [0045] In some embodiments, the term non-limiting EU is used. The UEs 510 described by the present invention can be any type of wireless device capable of communicating with network nodes 515 or other UEs over radio signals. The UE 510 can also be a radio communication device, target device, D2D UE, EU machine-type communication or EU capable of machine-to-machine (M2M) communication, low-cost and / or low-complexity EU, a sensor equipped with UF, tablet, mobile terminals, smartphone, embedded laptop equipment (LEE), laptop-mounted equipment (LME), USB dongles, Equipment at the Customer Facility (CPE), etc. The UE 510 can operate under normal coverage or improved coverage over its server cell. The improved coverage can be referred to as extended coverage. The UE 510 can also operate at a plurality of coverage levels (for example, normal coverage, improved coverage of level 1, improved coverage of level 2, improved coverage of level 3 and so on). In some cases, the UE 510 can also operate in out-of-coverage scenarios.
[0046] [0046] In addition, in some modalities, the generic terminology, "radio network node" (or simply "network node") is used. It can be any type of network node, which can comprise a base station (BS), base station, Node B, multi-standard radio node (MSR) such as MSR BS, Evolved Node B
[0047] [0047] Terminology, like the network node and the UE, must be considered non-limiting and, in particular, does not imply a certain hierarchical relationship between the two; in general, "eNodeB" could be considered as device 1 and "UE" device 2, and these two devices communicate with each other through some radio channel.
[0048] [0048] Examples of modalities of UE 510, network nodes 515 and other network nodes (such as radio network controller or core network node) are described in more detail below in relation to FIGURES 13-17.
[0049] [0049] Although FIGURE 5 illustrates a particular arrangement of the network 500, the present invention contemplates that the various modalities described by the present invention can be applied to a variety of networks having any suitable configuration. For example, network 500 can include any suitable number of UEs 510 and network nodes 515, as well as any additional elements suitable to support communication between UEs or between a UE and another communication device (such as a landline). In addition, while certain modalities can be described as implemented in a Long Term Evolution (LTE) network, the modalities can be implemented in any appropriate type of telecommunication system that supports any suitable communication standards (including standards
[0050] [0050] As described above, certain modalities provide new methods for controlling DRX operations in connected mode. In the following description of several exemplifying non-limiting modalities, certain assumptions can be made regarding scheduling operations and HARQ for NB-loT. First, it is assumed that the DL / UL data is programmed by a message on the DL control channel (for example, NB-PDCCH). Second, DL / UL data is assumed to be transmitted on shared channels (for example, NB-PDSCH and NB-PUSCH, respectively). Third, HARQ feedback is assumed to be transmitted on the NB-PDCCH / NB-PUSCH channels (the UL resource for HARQ feedback is assumed to be sent as part of the DL assignment on the NB-PDCCH). Finally, it is assumed that asynchronous HARQ is used in both DL and UL. It is noted that the scope of the present invention is not limited to the various exemplary embodiments described by the present invention. In some cases, none, some or all of the above assumptions may apply.
[0051] [0051] As described above, a UE 510 can monitor a DL control channel (for example, NB-PDCCH). Here, the time that the UE 510 monitors the DL control channel is referred to as the "active time". The behavior of the UE 510 in relation to the start of the "active time", the stop of the "active time", the expiration of the "active time" and how to retrieve information on the length and start of the "active time" described in general below in the context of FIGURE 5 , and in detail with reference to FIGURES 6A-9B below. In certain embodiments, the start of the "active time" occurs a "lag time" after a UL transmission from the UE 510.
[0052] [0052] In certain modalities, the behavior of the UE 510 is described in the context of NB-loT, and when the "active time" expires, the UE 510 is referred to enter the DRX operation in a similar way to the legacy LTE (this that is, the NB-PDCCH is monitored only for an "on-time duration" for each XRD cycle). Note, however, that the various modalities described here are not limited to the context of NB-loT. On the contrary, the present invention contemplates that the various modalities described herein are applicable to any suitable RAT.
[0053] [0053] In general, two main parameters are used: an "active time" that determines how long the UE must be awake to monitor the DL control channel before entering the DXR; and a "lag time" that determines when "active time" starts. As described above, the "lag time" (which can be referred to interchangeably here as "lag time") is initiated in relation to a UL transmission performed by the UE 510 that was triggered by receiving an indication of a transmission of DL or UL for UE 510 (for example, a control message on the DL control channel (for example, NB-PDCCH), such as: a DL assignment to receive DL data resulting in the UL transmission being a message feedback from HARQ or an UL grant resulting in said UL transmission being a given UL).
[0054] [0054] If a new control message is received on the DL control channel during "active time", the "active time" is stopped (that is, the UE does not need to be awake to monitor the DL control channel ( for example, NB-PDCCH) .Rather, the activity as referred control message (for example, DL assignment or UL grant) is first performed, and a new "active time" and "lag time" are performed. used.
[0055] [0055] In certain modalities, information about the values of the two parameters ("active time" and "lag time") is provided by transmission as part of the DL assignment / UL grant message sent on the DL control channel , and may vary between each DL assignment / UL grant. For example, in certain embodiments, a network node (for example, network node 515) can determine a duration of the "active time" and the "lag time" for use by the UE 510 to control the XRD operation. Network node 515 can send information about the duration of "active time" and "lag time" to UE 510. Network node 515 can send information to UE 510 in any suitable manner. As an example, network node 515 can send a message to UE 510 including information about the duration of the "active time" and the "lag time". As another example, information on the duration of the "active time" and "lag time" can be included in the indication of a DL or UL transmission to the UE 510 (for example, a control message on the control channel of DL (for example, NB-PDCCH), such as: a DL assignment to receive DL data resulting in the UL transmission being an HARQ feedback message or an UL grant resulting in said UL transmission being data UL).
[0056] [0056] Although certain exemplary modalities can be described in terms of parameters described as time durations, this is for example purposes only. The various embodiments described by the present invention are not limited to such examples. On the contrary, the present invention contemplates that timers can be used instead when implementing, specifying, describing and / or modeling these characteristics of the various modalities. Those skilled in the art understand that the descriptions relating to a length of time or a timer can be equivalent. In some cases, when implementing the various modalities described here in a device, a timer could preferably be used. In such a scenario, UE 510 can start a timer (with duration "lag time") after the end of the UL transmission, and after the expiration of said timer a new timer (with duration "lag time") can be started, and while running, the UE 510 monitors the DL control channel (for example, NB-PDCCH). Although the use of several timers is discussed here, according to alternative modalities, fewer timers (or even no timers) can be used, as long as the duration of time is still monitored and determined.
[0057] [0057] For example, in certain embodiments, the UE 510 monitors a DL control channel (for example, NB-PDCCH) for a duration of at least one first timer. In certain embodiments, one or more timers may be running at this time. In certain embodiments, the first timer of one or more timers can be one of an OnDurationTimer of a DRX cycle, a drx-InactivityTimer and a DRX retransmission timer. The UE 510 can receive, in the monitored DL control, an indication of a DL or UL transmission to the UE 510 (for example, a DL scaling assignment or an UL grant, respectively). After receiving the indication of the DL or UL transmission to the UE 510, the UE 510 can stop monitoring the first timer and perform a UL transmission associated with the DL or UL transmission indicated for the UE
[0058] [0058] The various modalities will now be described in greater detail below in relation to FIGURES 6-9. Note that the time durations of the transmissions and the lags between the transmissions shown in FIGURES 6-9 are not staggered and are not necessarily in a unit of time, such as a frame / subframe (for example, 1 ms). Instead, FIGURES 6-9 are used to illustrate what is transmitted (for example, control / data) on the different physical channels of NB-loT, in what order, the different channel transmission lags and which timer durations exist. Note that the description below includes examples of using both time durations and timers. To reflect that any implementation is possible, FIGURES 6-9 illustrate a "time or timer" or a "time or lag timer"; and an "active time or timer".
[0059] [0059] FIGURE 6A illustrates a first example of timing and transmission to control XRD operations, according to certain modalities. More particularly, FIGURE 6A shows an indication of a DL 605 transmission to a UE received on the downlink control channel 610 (NB-PDCCH in the example of FIGURE 6A), namely a DL scaling assignment (denoted DCI-1 in example from FIGURE 6A) with resulting data transmission 615. In other words, message 605 (denoted DCI-1) is received by the UE on the DL 610 control channel that programs a DL 615 data block (denoted SRB / DRB in the example of FIGURE 6A) to be received by the UE on NB-PDSCH 620 (on a signaling radio carrier (SRB) or on a data radio carrier (DRB)). As described above, the feedback feature of HARQ. for NB-PUSCH 635 it is assumed to be included in message 605 of NB-PDCCH (i.e., DCI-1).
[0060] [0060] In the example of FIGURE 6A, after receiving the indication of the DL 605 transmission to the UE (that is, when the DCI-1 is received), the "* time" 630 is stopped and the UE stops monitoring the channel DL 610 control channel. This is because the DL 610 control channel no longer needs to be monitored due to successful reception at the UE. According to alternative modalities, the control channel 610 can still be monitored, even if the UE no longer needs to do so. The "*" indicates that it can be an "On Duration" or "active" time. For example, in modalities where one or more timers are used, the "* time" 630 shown in the example in FIGURE 6A can be a first timer during which the UE monitors the DL 610 control channel. For example, the first timer 630 can be one of an OnDurationTimer of an XRD cycle, a drx-InactivityTimer and an XRD relay timer. Message 605 triggers a UL 635 transmission activity later. In the case of DL assignment shown in the example in FIGURE 6A, the first SRB / DRB 615 data in NB-PDSCH 620 is received and, based on the decoding result, HARQ feedback is sent (ACK 635 in the example in FIGURE 6A) in NB-PUSCH 625 In other words, the DCI-1 605 message is an indication of a DL transmission to the UE, and the UE performs the UL 635 transmission associated with the indicated DL transmission (namely, the sending of a confirmation message).
[0061] [0061] After performing the associated transmission of UL 635, the "active time" 640 is started at a "lag time" 645 after the completion of the transmission of UL 635. In modalities in which timers are used, for example, after of carrying out the associated UL transmission 635 (the ACK message in the example of FIGURE 6A), the UE starts the second timer 645. The duration of the second timer 645 can be or comprise a lag period. For example, the second timer 645 may be an HARQ-RTT timer that comprises a lag period. When the second timer 645 expires, the UE starts the third timer 640 corresponding to the "active time" described above. In certain embodiments, the third timer 640 may be one of a drx-InactivityTimer and an XRD retransmission timer. During the "active time" (for example, during the duration of the third timer 640), the UE monitors the DL 610 control channel (NB-PDCCH in the example of FIGURE 6A). If no NB-PDCCH message is received before the end of "active time" 640 (for example, before the third timer 640 expires), the UE enters DRX 660 mode as shown in the example in FIGURE 6A. During DRX, the concepts previously described apply (ie, the UE wakes up for a period of time 650 (“On Duration”) to monitor the DL 610 control channel (for example, NB-PDCCH).
[0062] [0062] In the example of FIGURE 6A, arrows 655a-d from message DCI-1 605 are intended to illustrate that the size (for example, duration) of "lag time" 645 and "active time" 640 (or the duration of the second timer 645 and the third timer 640 described above, respectively) are included in the DCI-1 message 605 (or relevant information to be able to determine the duration of the timer). In certain modalities, these parameters can change between each scheduled transmission (for example, DL assignment or UL concession), allowing parameters to be changed dynamically for each transmission. For example, a network node (for example, eNB 515 described above in relation to FIGURE 5) can determine a duration of the second timer 645 comprising a lag period and third timer 640 described above for use by the UE to control the operation of XRD . The duration of the second timer 645 can be the amount of time the UE waits after sending the UL 635 transmission associated with the DL transmission indicated to the UE before the UE starts the third timer 640. The duration of the third timer 640 can comprise an amount of time that the UE monitors the DL 610 control channel before entering DRX mode. The network node can send information about the duration of the second timer 645 and the third timer 640 to the UE to the UE.
[0063] [0063] The present invention contemplates that information about the various parameters (for example, length of "lag time" 645 and "active time" 640 or duration of second timer 645 and third timer 640 described above) can be signaled in any suitable way. For example, they can be part of an L3 message or transmitted in the system information. In such a scenario, the parameters would be semi-static as in the previous approaches and not as flexible as sending them as part of the NB-PDCCH 605 message (for example, DCI-Il in the example in FIGURE 6A). Also note that the exact value does not necessarily have to be flagged. Instead, a table could be transmitted and / or predefined and an index to that table could be flagged and / or included.
[0064] [0064] In the example in FIGURE 6A involving a DL assignment, typical examples of the different time durations are given below. Note, however, that any values can be applied depending, for example, on the UL / DL frequency features used, encoding rate and number of repetitions (ie, redundancy), message / data size, modulation type , network node (for example, eNB) scheduling strategy and any other suitable criteria. In certain embodiments, the duration of the NB-PDCCH (DCI-1) can be 2 ms. The lag between NB-PDCCH and NB-PDSCH can be 4 ms. The duration of the NB-PDSCH (SRB / DRB) can be 20 ms. The lag between NB-PDSCH and NB-PUSCH can be 2 ms. The duration of the NB-PUSCH (ACK) can be 4 ms. The 645 "lag time" duration can be 10 ms. The duration of the "active time" 640 can be 20 ms.
[0065] [0065] FIGURE 6B illustrates a variation of the first example of timing and transmission to control XRD operations in FIGURE 6A, according to certain modalities. FIGURE 68 is similar to FIGURE 6A, so only the differences will be described. In the example of the embodiment of FIGURE 68, "active time" 640 starts a "lag time!" 645 after the end of the indication received from a DL 605 transmission to the UE received on the DL 610 control channel (NB-PDCCH in the example of FIGURE 6B), namely a DL scaling assignment (denoted DCI-1 in the example of FIGURE 6B). In modalities in which timers are used, for example, after the end of the received indication of transmission from DL 605 to the EU, the UE starts the second timer 645. The duration of the second timer 645 can be or comprise a lag period. For example, the second timer 645 may be an HARQ-RTT timer that comprises a lag period. When the second 645 timer expires; the UE starts the third timer 640 corresponding to the "active time".
[0066] [0066] FIGURE 7A illustrates a second example of timing and transmission to control XRD operations, according to certain modalities. More particularly, FIGURE 7A shows an indication of a UL transmission to the EU matrix, namely UL 705 grant (denoted DCT-O in the example of FIGURE 7A) with the consequent UL 710 transmission. In other words, message 705 (denoted DCI-O) is received by the EU on the DL 715 control channel (NB-PDCCH in the example in figure 7A) which programs the UL 710 data block to be sent by the EU on the NB-PUSCH 720 (either on an SRB or in a DRB).
[0067] [0067] In the example of FIGURE 7A, after receiving the indication of the UL transmission to the UE (that is, when the DCI-0705 is received), "time" 725 is stopped and the UE stops monitoring the control channel DL 715. This is because the DL 715 control channel (NB-PDCCH in the example of FIGURE 7) no longer needs to be monitored due to successful reception at the UE. According to alternative modalities, the control channel 715 can still be monitored, even if the UE no longer needs to do so. Similar to FIGURE 6A described above, “* time” 725 indicates that it can be an “On Duration” or “active” time. For example, in modalities where one or more timers are used, “* time” 725 can be a first timer 725 during which the UE monitors the DL 715 control channel. For example, the first timer 725 can be a within an OnDurationTimer of an XRD cycle,
[0068] [0068] After performing the associated UL 710 transmission, the "active time" 730 is started with a "lag time" 735 after the UL 710 transmission ends. In modalities in which timers are used, for example, after performing the associated UL 710 transmission, the UE starts the second timer 735 corresponding to the "lag time" described above. The duration of the second timer 735 may be or comprise a lag period. For example, the second timer 735 can be an HARQ-RTT timer that comprises a lag period. When the second timer 735 expires; the UE starts the third timer 730 corresponding to the "active time" described above. In certain embodiments, the third timer 730 can be one of a drx-InactivityTimer and an XRD retransmission timer. During "active time" 730 (for example, during the duration of the third timer 730), the UE monitors the DL 715 control channel (NB-PDCCH in the example in FIGURE 7A). If no NB-PDCCH message is received before the end of "active time" 730 (ie, before the third timer 730 expires), the UE enters DRX 750 mode as shown in the example in FIGURE 7A. During the DRX, the previously applied concepts apply (ie , the UE awakens for a period of time 740 (“On Duration”) to monitor the DL 715 control channel (for example, NB-PDCCH).
[0069] [0069] In the example of FIGURE 7A, arrows 745a-c from DCI-O message 705 are intended to illustrate that the size (e.g., duration) of "lag time" 735 and "active time" 730 (or the duration of the second timer 735 and the third timer 730 described above, respectively) are included in message DCI-O 705 (or relevant information to be able to determine the duration of the timer). In certain modalities, these parameters can change between each scheduled transmission (for example, DL assignment or UL concession), allowing parameters to be changed dynamically for each transmission. For example, a network node (e.g., eNB 515 described above in relation to FIGURE 5) can determine a duration of the second timer 735 and third timer 730 described above for use by the UE to control the operation of DRX. The duration of the second timer 735 may be the amount of time the UE waits after sending the UL transmission 710 associated with the DL transmission indicated to the UE before the UE starts the third timer 730. The duration of the third timer 730 may comprise an amount of time that the UE monitors the DL 715 control channel before entering DRX mode. The network node can send information about the duration of the second timer 735 and the third timer 730 to the UE to the UE.
[0070] [0070] The present invention contemplates that information about the various parameters (for example, length of "lag time" 735 and "active time" 730 or duration of the second timer 735 and third timer 730 described above) can be signaled from any proper manner. For example, they can be part of an L3 message or transmitted in the system information. In such a scenario, the parameters would be semi-static as in the previous approaches and not as flexible as sending them as part of the NB-PDCCH message (for example, DCI-O 705 in the example in FIGURE 7 A). Also note that the exact value does not necessarily have to be flagged. Instead, a table could be transmitted and / or predefined and an index to that table could be flagged and / or included.
[0071] [0071] The present invention contemplates that the values of the various parameters can be any suitable values. In certain embodiments, the values may vary based on any suitable criterion. For example, the values of the various parameters may depend on the UL / DL frequency resources used, encoding rate and number of repetitions (ie, redundancy), message / data size, type of modulation, network node (for example , eNB), scheduling strategy and any other suitable criteria.
[0072] [0072] FIGURE 7B illustrates a variation of the second timing and transmission example to control XRD operations in FIGURE 7A, according to certain modalities. FIGURE 7B is similar to FIGURE 7A, so only the differences will be described. In the example of the embodiment of FIGURE 7B, "active time" 730 starts a "lag time" 735 after the end of the indication received from a DL 705 transmission to the UE received on the DL 715 control channel (NB-PDCCH in example of FIGURE 78), namely a UL concession (denoted DCI-O in the example of FIGURE 7B). In modalities in which timers are used, for example, after the end of the received indication of transmission of UL 705 to the EU, the UE starts the second timer 735. The duration of the second timer 735 can be or comprise a lag period. For example, the second timer 735 can be an HARQ-RTT timer that comprises a lag period. When the second timer 735 expires, the UE starts the third timer 730 corresponding to the "active time".
[0073] [0073] FIGURE 8A illustrates a third example of timing and transmission to control XRD operations, according to certain modalities. More particularly, FIGURE 8A illustrates a scenario in which a HARQ retransmission is triggered for the DL. Similar to the timing and transmission example for controlling XRD operations illustrated in FIGURE 6A, FIGURE 8A shows an indication of a DL 805 transmission to the UE, namely DL scaling assignment (denoted DCI-1 in the example in FIGURE 8 A) in downlink control channel 810 with resulting data transmission 815. In other words, message 805 (denoted DCI-1) received by the UE on the DL control channel 810 (NB-PDCCH in the example in FIGURE 8A) program a DL 815 data block (denoted SRB / DRB in the example of FIGURE 8A) to be received by the UE on the NB-PDSCH 820 (either on an SRB or on a DRB).
[0074] [0074] In the example of FIGURE 8A, upon receiving the indication of the DL 805 transmission to the UE (ie, when the DCI-1 is received), the "* time" 825 is stopped and the UE stops monitoring the channel DL 810 control channel. This is because the DL 810 control channel no longer needs to be monitored due to successful reception at the UE. According to alternative modalities, the control channel 810 can still be monitored, even if the UE no longer needs to do so. The "* time" 825 indicates that it can be an "On Duration" or "active" time. For example, in modes in which one or more timers are used, the "* time" 825 shown in the example in FIGURE 8A can be a first timer 825 during which the UE monitors the DL 810 control channel. For example, the The first timer 825 can be one of an OnDuration timer of a DRX cycle, a drx-InactivityTimer and a DRX retransmission timer. Message 805 triggers a UL 830 transmission activity later.
[0075] [0075] In the case of the DL assignment shown in the example in FIGURE 8 A, first the SRB / DRB 815 data on the NB-PDSCH 820 is received and, based on the decoding result, the feedback from HARQ 830 is sent (a NACK in the example of FIGURE 8A). In other words, the DCI-1 message 805 is an indication of a DL transmission to the UE, and the UE performs the UL 830 transmission associated with the indicated DL transmission. In the example in FIGURE 8A, the associated UL 830 transmission is HARQ feedback in the form of a "NACK" that triggers an HARQ retransmission.
[0076] [0076] After performing the associated UL 830 transmission, the "active time" 835 starts a "lag time" 840 after the completion of the UL 830 transmission. In modalities in which timers are used, for example, after perform the associated UL transmission 830 (the NACK message in the example of FIGURE 8A), the UE starts the second timer 840. The duration of the second timer 840 can be or comprise a lag period. For example, the second timer 840 can be a HARQ-RTT timer that comprises a lag period. When the second timer 840 expires, the UE starts the third timer 835 corresponding to the "active time" described above. In certain embodiments, the third timer 835 can be one of a drx-InactivityTimer and an XRD retransmission timer. During "active time" 835 (for example, during the duration of the third timer 835), the UE monitors the DL 810 control channel (NB-PDCCH in the example in FIGURE 8A). If no NB-PDCCH message is received before the end of "active time" 835 (for example, before the third timer 835 expires), the UE enters DRX mode. During DRX, the previously described concepts apply (ie, the UE wakes up during a period of time (“On Duration”) to monitor the DL 810 control channel (for example, NB-PDCCH).
[0077] [0077] In the example of FIGURE 8A, however, the UE receives an indication of a second transmission from DL 845 to the UE (that is, when the second DCI-1 845 is received), "active time" 835 is stopped and the UE stops monitoring the DL 810 control channel. This is because the DL 810 control channel (NB-PDCCH in the example in FIGURE 8A) no longer needs to be monitored due to the successful reception at the UE of the second message. DCI-1 845. The second message 845 triggers a UL 850 transmission activity later. In the case of DL assignment shown in the example in FIGURE 8 A, the first and second SRB / DRB 855 data in NB-PDSCH 820 are received and, based on the decoding result, HARQ feedback is sent (ACK 850 in example from FIGURE 8A). In other words, the second DCI- | 845 is a second indication of a DL 855 transmission to the UE (i.e., a HARQ retransmission of the DL 835 transmission), and the UE performs the UL 850 transmission associated with the indicated DL HARQ retransmission (i.e., sending ACK 850 message).
[0078] [0078] After performing the associated UL 850 transmission, the "active time" 860 is the "lag time" started 865 after the completion of the UL 850 transmission. In modalities where timers are used, for example, after perform the associated UL transmission 850 (the NACK message in the example of FIGURE 8A), the UE starts the second timer 865. The duration of the second timer 865 can be or comprise a lag period. For example, the second timer 865 can be a HARQ-RTT timer that comprises a lag period. When the second timer 865 expires, the UE starts the third timer 860 corresponding to the "active time" described above. In certain embodiments, the third timer 860 can be one of a drx-InactivityTimer and an XRD retransmission timer. During "active time" 860 (for example, during the duration of the third timer 860), the UE monitors the DL 810 control channel (NB-PDCCH in the example in FIGURE 8A). If no NB-PDCCH message is received before the end of "active time" 860 (ie, before the third timer 860 expires), the UE enters DRX mode 880 as shown in the example in FIGURE 8A. During DRX, the concepts previously described apply (ie , the UE awakens for a period of time (“On Duration”) to monitor the DL 810 control channel (for example, NB-PDCCH).
[0079] [0079] In the example of FIGURE 8A, arrows 870a-d from the first DClI-1 message 805 and arrows 875a-d from the second DCl-1 message 845 are intended to illustrate that the size (e.g., duration) of "dwell time" lag "840," active time "835," lag time "865 and" active time "860 (or, in certain embodiments, the duration of the second and third timers described above, respectively) can be included in the first DCI-1 message 805 and second message DCI-1 845, respectively (or relevant information to be able to determine the duration of the timer). In certain embodiments, these parameters can change between each scheduled transmission (for example, between the first DClI-1 message and the second DCl-1 message), allowing parameters to be dynamically changed for each transmission. Thus, the duration of "lag time" 840 may be the same or different from that of "lag time" 865. Similarly, the duration of "active time" 835 may be the same or different from "active time" 860. A network node (for example, eNB 515 described above in relation to FIGURE 5) can determine a duration of the second timers 840, 865 and third timers 835, 860 described above for use by the UE to control the operation of XRD. The durations of the second timers 840, 865 can be an amount of time the UE waits after sending the UL 830, 850 transmissions associated with the indicated DL or UL transmissions to the UE, respectively, before the UE starts the third 835 timers , 860. The duration of the third timers 835, 860 may comprise a period of time that the UE monitors a DL control channel before entering DRX mode. The network node can send information about the duration of the second timers 840, 865 and the third timers 835, 860 to the UE to the UE. In some cases, the durations may be different for the first DL transmission associated with the first DCI-1 805 message and the second DCI-1 845 message. In certain embodiments, the durations may be the same. The various parameters (for example, length of "lag time" 840, 865 and "active time" 835, 860 or the duration of the second timers 840, 865 and third timers 835, 860 described above) can be signaled in any appropriate way . The various examples of signaling described above in relation to FIGURE 6 are equally applicable to the exemplary embodiment of FIGURE 8A.
[0080] [0080] FIGURE 8B illustrates a variation of the third timing and transmission example to control XRD operations in FIGURE 8A, according to certain modalities. FIGURE 8B is similar to FIGURE 8A, so only the differences will be described. In the example of the embodiment of FIGURE 8B, "active time" 835 is started and a "lag time" 840 after the end of the indication received from a DL 805 transmission to the UE is received on the DL 810 control channel (NB- PDCCH in the example of FIGURE 8B), namely a scaling assignment of DL (denoted DCI-1 in the example of FIGURE 8B). In modalities in which timers are used, for example, after the end of the received indication of transmission from UL 805 to the EU, the UE starts the second timer 840. The duration of the second timer 840 can be or comprise a lag period. For example, the second timer 840 may be an HARQ-RTT timer that comprises a lag period. When the second timer 840 expires, UE starts the third timer 835 corresponding to the “active time”.
[0081] [0081] Similar to FIGURE 8A described above, in the example of FIGURE 8B the UE receives an indication of a second DL 845 transmission to the UE (i.e., when the second DCI-1 845 is received). In such a scenario, "active time" 835 is stopped and the UE stops monitoring the DL 810 control channel. In the example in FIGURE 8B, however, "active time" 860 is started and a "lag time" 865 at the end of the second indication received from a DL 845 transmission to the UE received on the DL 810 control channel (NB-PDCCH in the example of FIGURE 8B), namely a DL scaling assignment (denoted DCI-1 in the example of FIGURE 8B). In modalities where timers are used, for example, after the end of the received indication of transmission from UL 845 to the EU, the UE starts the second timer 865. The duration of the second timer 865 can be or comprise a lag period. For example, the second timer 865 can be an HARQ-RTT timer that comprises a lag period. When the second timer 865 expires, the UE starts the third timer 860 corresponding to the "active time".
[0082] [0082] FIGURE 9A illustrates a fourth example of timing and transmission to control XRD operations, according to certain modalities. More particularly, FIGURE 9 illustrates a scenario in which a HARQ retransmission is triggered for UL. Similar to FIGURE 7A described above, the example of FIGURE 9A illustrates a first indication of a UL 905 transmission to the UE, namely a UL grant (denoted DCI-O in the example of FIGURE 9A) with the resulting UL 910 transmission. In other words, the first message 905 (denoted DCI-O) received by the UE on the DL 915 control channel (NB-PDCCH in the example of FIGURE 9A) which programs a DL 910 data block to be received by the UE on the NB -PUSCH 920 (either in an SRB or a DRB).
[0083] [0083] In the example of FIGURE 9A, upon receiving the indication of transmission from UL 905 to the UE (ie, when the DCI-O is received), the "* time" 925 is stopped and the UE stops monitoring the channel DL 915 control channel. This is because the DL 915 control channel (NB-PDCCH in the example in FIGURE 9A) no longer needs to be monitored due to the successful reception at the UE. According to alternative modalities, the 915 control channel can still be monitored, even if the UE no longer needs to do so. Similar to FIGURE 7A described above, the “* time” 925 indicates that it can be an “On Duration” or “active” time. For example, in modalities where one or more timers are used, the "* time" 925 shown in the example in FIGURE 9A can be a first timer 925 during which the UE monitors the DL 915 control channel. For example, the first timer 925 can be one of an OnDurationTimer of an XRD cycle, a drx- InactivityTimer and an XRD relay timer. Message 905 triggers a UL 910 transmission activity later. In the case of a UL grant shown in the example in FIGURE 9A, the UE performs data transmission from SRB / DRB 910 on the NB-FUSCH 920. In other words, message DCI-O 905 is an indication of a UL transmission to the UE, and the UE performs the transmission of UL 710 associated with the transmission (namely, SRB / DRB data transmission on the NB-PUSCH 920).
[0084] [0084] After performing the associated UL transmission, the "active time" 930 is started "lag time" 935 after the completion of the UL transmission
[0085] [0085] In the case of the UL grant, shown in the example of FIGURE 9A the UE receives a second message 940 which is a second DCI-O message or a NACK message on the DL 915 control channel before the expiration of the "active time" 930 (for example, before the third timer 930 expires). In scenarios in which the second message 940 is a NACK message, it may be a UL grant with the new data indicator (NDI) not switched in case adaptive HARQ retransmission is used (that is, an implicit NACK is used). The second message 940 provides an indication of a retransmission of HARQ UL 945 to the UE. Upon receiving the second message 940, "active time" 930 (or, in some cases, the third timer 930) is stopped and the UE stops monitoring the DL 915 control channel. This is because the DL 915 control channel (NB-PDCCH in the example of FIGURE 9A) no longer needs to be monitored due to the successful receipt in the UE of the second message 940 (a second DCI-O message or a NACK). The second message 940 triggers the UL 945 transmission activity later in time (i.e., the HARQ retransmission of the UL 910 transmission). In the case of the UL grant shown in the example of FIGURE 9A the UE performs the second transmission of UL 945 (namely, transmission of second SRB / DRB data on the NB-PUSCH 920).
[0086] [0086] After performing the second associated UL 945 transmission, "active time" 950 is started and "lag time" 955 after the UL 945 transmission ends. In modes in which timers are used, for example, after performing the second associated UL transmission 945 (transmission of the second SRB / DRB data on the NB-PUSCH 920 in the example in FIGURE 9A), the UE starts the second timer 955 The duration of the second timer 955 can be or comprise a lag period. For example, the second timer 955 may be an HARQ-RTT timer that comprises a lag period. When the second timer 955 expires, the UE starts the third timer 950 corresponding to the "active time" described above. In certain embodiments, the third timer 950 can be one of a drx-InactivityTimer and an XRD retransmission timer. During "active time" 950 (for example, during the duration of the third timer 950), the UE monitors the DL 915 control channel (NB-PDCCH in the example in FIGURE 9A). If no NB-PDCCH message is received before the end of "active time" 950 (for example, before the third timer 950 expires), the UE enters DRX mode 970 as shown in the example in FIGURE 9A. During DRX, the concepts previously described apply (ie , the UE awakens for a period of time (“On Duration”) to monitor the DL 915 control channel (for example, NB-PDCCH).
[0087] [0087] In the example of FIGURE 9A, arrows 960a-c which are from the first DCI-O message 905 and arrows 965 ac which are from the second DCI-O message 905 are intended to illustrate that the size (e.g., duration) of "time lag time "935," active time "930," lag time "955 and" active time "950 (or, in certain embodiments, the duration of the second timers 935, 955 and third timers 930, 950 described above, respectively) can be included in the first DCI-O message 905 and the second DCI-O message 940, respectively (or relevant information to be able to determine the duration of the timer). In certain embodiments, these parameters can change between each programmed transmission (for example, between the first DCI-O 905 message and the second DCI-O 940 message), allowing the parameters to be changed dynamically for each transmission. Thus, the duration of "lag time" 935 may be the same or different from "lag time" 955. Similarly, the duration of "active time" 930 may be equal to or different from "active time" 950. One network node (for example, eNB 515 described above in relation to FIGURE 5) can determine a duration of the second timers 935, 955 and third timers 930, 950 described above for use by the UE to control the operation of XRD. The durations of the second timers 935, 955 can be an amount of time the UE waits after sending the UL 910, 945 transmissions associated with the indicated DL or UL transmissions to the UE, respectively, before the UE starts the third 930 timers ,
[0088] [0088] The present invention contemplates that the values of the various parameters can be any suitable values. In certain embodiments, the values may vary based on any suitable criterion. For example, the values of the various parameters may depend on the UL / DL frequency resources used, encoding rate and number of repetitions (ie, redundancy), message / data size, type of modulation, network node (for example , eNB) and any other suitable criteria.
[0089] [0089] FIGURE 9B illustrates a variation of the fourth example of timing and transmission to control XRD operations in FIGURE 9A, according to certain modalities. FIGURE 9B is similar to FIGURE 9A, therefore, only the differences will be described. In the exemplary embodiment of FIGURE 9B "active time" 930, a "lag time" 935 is initiated after the end of the indication received from a UL 905 transmission to the UE received on the DL 915 control channel (NB-PDCCH in the example of FIGURE 98), namely a UL concession (denoted DCI-O in the example of FIGURE 9B). In modalities where timers are used, for example, after the end of the received indication of transmission from UL 905 to the EU, the UE starts the second timer 935. The duration of the second timer 935 can be or comprise a lag period. For example, the second timer 935 may be an HARQ-RTT timer that comprises a lag period. When the second timer 935 expires, the UE starts the third timer 930 corresponding to the "active time".
[0090] [0090] Similar to FIGURE 9A described above, in the example of FIGURE 9B the UE receives a second message 940 which is a second DCI-O message or a NACK message on the DL 915 control channel before the expiration of "active time" 930 (for example, before the third 930 timer expires). The second message 940 provides an indication of a second transmission 945 from the UL to the UE. Upon receiving the second message 940, "active time" 930 (or, in some cases, the third timer 930) is stopped and the UE stops monitoring the DL 915 control channel. In the example in FIGURE 9B, however, the "active time" 950 is initiated and a "lag time" 955 after the end of the second indication received from a UL 940 transmission to the UE received on the DL 915 control channel (NB-PDCCH in the example in FIGURE 9B) . In modalities where timers are used, for example, after the end of the second indication received from UL 940 transmission to the EU, the UE starts the second timer 955. The duration of the second timer 955 can be or comprise a lag period . For example, the second timer 955 may be an HARQ-RTT timer that comprises a lag period. When the second timer 955 expires, the UE starts the third timer 950 corresponding to the "active time".
[0091] [0091] While the exemplary embodiments of FIGURES 6A-9B describe DL assignments and UL grants as examples of stopping criteria, the present invention is not limited to these examples. On the contrary, the present invention contemplates the use of alternative stopping criteria for "active time", for example, sending other messages defined in the NB-
[0092] [0092] FIGURE 10 is a flow chart of an example of XRD operations, according to certain modalities. In step 1005, the UE monitors the DL control channel (for example, NB-PDCCH) during OnDurationTime or active time. If, in step 1010, either the OnDurationTime or the Active Time expires, the flow continues to step 1015 and the UE enters DRX mode and waits for the next OnDuration to occur. During the time that the UE waits for the next occurrence of OnDuration, the UE does not monitor the DL control channel. In step 1020, the next occurrence of OnDuration occurs. In step 1025, the UE starts the OnDuration timer. Once the OnDuration timer is started, the flow returns to step 1005 and the UE monitors the downlink control channel (for example, NB-PDCCH) during the OnDuration time or active time.
[0093] [0093] Alternatively, during the monitoring of the NB-PDCCH in step 1005, the flow can proceed to step 1030 if the UE receives a message on the downlink control channel (for example, DL assignment or UL concession).
[0094] [0094] In some cases, in step 1035, the NB-PDCCH message received in step 1030 may be an order from DRX. In such a scenario, the flow proceeds to step 1015, where the UE enters XRD and waits for the next occurrence of
[0095] [0095] In some cases, in step 1040, the UE determines the content of the message received on the downlink control channel. If in step 1040 the UE determines that the message received is a UL grant, the flow proceeds to step 1045 where the UE transmits UL SRB and / or DRB data on an UL shared channel (NB-PUSCH in the example of FIGURE 10). Alternatively, at step 1040, the UE may determine that the message received is a DL scheduling assignment. In this scenario, the flow proceeds to step 1050, where the UE receives and decodes SRB and / or DRB data on a DL shared channel (NB-PDSCH in the example in FIGURE 10). In step 1055, the UE transmits feedback from HARQ. on the UL sharing channel (for example, NB-PUSCH). In certain modalities, for example, HARQ feedback. it can be an ACK message or a NACK message.
[0096] [0096] The flow continues to step 1060, where the UE waits for a "lag time". In certain embodiments, the UE can start a timer. In certain embodiments, the timer can be started either after executing the associated UL transmission (for example, when the UE determines that the message received is a UL grant) or at the end of the indication received from the DL or UL transmission to the UE (for example, when the UE determines that the message received is a DL escalation assignment). Thus, the duration of the timer can comprise an amount of time the UE waits after sending the UL transmission in step 1045 before the UE starts an "active time" or an amount of time the UE waits after the end of the me indication. DL or UL transmission in step 1030 before the UE starts an "active time". After waiting for the "lag time" in step 1060 (or, in certain embodiments, the timer having a lag time duration expires), the flow proceeds to step 1065. In step 1065, the UE starts the active time. In certain embodiments, the UE can start another timer with a duration that is an amount of time that the UE monitors the DL control channel (for example, NB-PDCCH) before the UE enters DRX mode. After starting the active time at step 1065, the flow returns to step 1005, where the UE monitors NB-PDCCH for the duration of the "active time".
[0097] [0097] FIGURE 11 is a flow chart of a 1100 method in a UE, according to certain modalities. The method starts at step 1104, where UE monitors a DL control channel for a duration of at least one first timer. In certain embodiments, the first timer can be an OnDurationTimer of a discontinuous reception cycle. In certain embodiments, the first timer can be a drx-InactivityTimer. In certain embodiments, the first timer may be a discontinuous retransmission timer.
[0098] [0098] In step 1108, the UE receives, in the monitored DL control channel, an indication of a DL or UL transmission to the UE. In certain embodiments, the indication of the transmission of DL or UL to the UE may comprise information about a duration of at least one between the second and third timers. In step 1112, after receiving the indication of the DL or UL transmission to the UE, the UE stops monitoring the first timer. After the first timer is stopped, the UE does not need to monitor the downlink control channel.
[0099] [0099] In step 1116, the UE performs a UL transmission associated with the DL or UL transmission indicated for the UE. In certain embodiments, the indication of DL or UL transmission to the UE may comprise a DL step assignment, and the UL transmission associated with the indicated DL may comprise a confirmation message. In certain embodiments, the indication of DL or UL transmission to the UE may comprise a UL grant, and the UL transmission associated with the indicated UL transmission may comprise a data transmission at UL.
[00100] [00100] In step 1120, the UE starts a second timer, after receiving the indication for the downlink or uplink transmission to the UE, the duration of the second matrix timer comprising a lag period. In certain embodiments, the second timer can be started; either after performing the associated UL transmission; or at the end of the indication received from the DL or UL transmission to the UE. In certain embodiments, the second timer may be a Hybrid Automatic Replay Request (HARQ) Round Trip Time (RTT) timer that comprises the lag period. Alternatively, in step 1120, the UE starts a second timer, after receiving the indication for downlink or uplink transmission to the UE.
[00101] [00101] In step 1124, when the second timer expires, the UE starts a third timer. In certain embodiments, the method may comprise monitoring the DL control channel for the duration of the third timer. In certain embodiments, at least one of the first timer and the third timer can be a drx-InactivityTimer. In certain embodiments, at least one of the first timer and the third timer can be a discontinuous retransmission timer.
[00102] [00102] In certain embodiments, the method may comprise inserting a batch reception mode when the third timer expires. In certain embodiments, the method may receive a message including information about a duration of at least one of the second and third timers.
[00103] [00103] FIGURE 12 is a flow diagram of a 1200 method on a network node, according to certain modalities. The method starts at step 1204, where the network node determines the duration of a first timer and the duration of a second timer, the first and second timers for use by an UE equipment to control the batch reception operation, where the duration of the first timer comprises a lag period. In certain embodiments, the duration of the first timer may comprise one of: an amount of time that the UE waits after sending the UL transmission associated with the DL or UL transmission to the UE before the UE starts the second timer; and a period of time that the UE waits after the end of the DL or UL transmission indication to the UE before the UE starts the second timer. In certain embodiments, the first timer may be a Hybrid Automatic Replay Request (HARQ) Round Trip Time (RTT) timer. In certain embodiments, the duration of the second timer may comprise an amount of time that the UE monitors a channel. DL control before entering a batch reception mode. In certain embodiments, the second timer can be a drx-InactivityTimer. In certain embodiments, the second timer may be a discontinuous retransmission timer.
[00104] [00104] In step 1208, the network node sends information about the duration of the first timer and the duration of the second timer to the UE. In certain embodiments, information about the duration of the first timer and the duration of the second timer can be included in an indication of a DL or UL transmission to the UE. In certain embodiments, sending information about the duration of the first timer and the duration of the second timer to the UE may include sending a message to the UE including information about the duration of the first timer and the duration of the second timer.
[00105] [00105] In certain embodiments, the method may comprise the sending, to the UE, of an indication of a DL or UL transmission to the UE and the receipt, from the UE, of an UL transmission associated with the DL transmission. or UL indicated for the UE. In certain embodiments, the indication of DL or UL transmission to the UE may comprise a DL step assignment, and the UL transmission associated with the indicated DL may comprise a confirmation message. In certain embodiments, the indication of DL or UL transmission to the UE may comprise a UL grant, and the UL transmission associated with the indicated UL transmission may comprise a data transmission at UL. According to certain modalities, the network node can transmit downlink control messages for the duration of the third timer. This can be beneficial when the UE stops monitoring the downlink control channel after a first timer is stopped.
[00106] [00106] FIGURE 13 is a schematic diagram of an exemplary UE, according to certain modalities. The UE 510 can refer to any type of wireless device that communicates with a node and / or another wireless device in a cellular or mobile communications system. Examples of the UE 510 include a mobile phone, a smartphone, a PDA (Personal Digital Assistant), a portable computer (for example, laptop, tablet), a sensor, a modem, a machine-type communication device (MTC) / device machine to machine (M2M), embedded laptop equipment (LEE), laptop-mounted equipment (LME), USB dongles, a D2D-compatible device, or other device that can provide wireless communication. The UE 510 can also be referred to as a wireless device, a station (STA), a device or a terminal in some embodiments. The UE
[00107] [00107] The 1320 processing circuit can include any suitable combination of hardware and software implemented in one or more modules to execute instructions and manipulate data to perform some or all of the functions described in the UE 510, such as the functions in the UE 510 described above in relation to FIGURES 1-12. In some embodiments, the 1320 processing circuit may include, for example, one or more computers, one or more central processing units (CPUs), one or more microprocessors, one or more applications, one or more Application Specific Integrated Circuits (ASICs) ), one or more Arrangement of Field Programmable Doors (FPGAs) and / or other logic.
[00108] [00108] The 1330 memory is generally operable to store instructions, such as a computer program, software, an application including one or more logic, rules, algorithms, code, tables, etc. and / or other instructions capable of being executed by a processing circuit. Examples of 1330 memory include computer memory (for example, Random Access Memory (RAM) or Read-Only Memory (ROM), mass storage medium (for example, a hard drive), removable storage medium (for example, a compact disc) or a digital video disc (DVD)) and / or any other volatile or non-volatile, non-transitory, computer-readable and / or computer-executable memory device,
[00109] [00109] Other modalities of UE 510 may include additional components in addition to those shown in FIGURE 13 that may be responsible for providing certain aspects of UF functionality, including any of the features described above and / or any additional functionality (including any functionality required for support the solution described above). As an example only, the UE 510 may include input devices and circuitry, output devices and one or more synchronization units or circuitry, which may be part of the 1320 processing circuit. Input devices include mechanisms for input UE 510. For example, input devices can include input mechanisms, such as a microphone, input elements, a display, etc. Output devices may include mechanisms for outputting data in audio, video and / or hard copy format. For example, output devices can include a speaker, a display, etc.
[00110] [00110] FIGURE 14 is a schematic diagram of an exemplary network node, according to certain modalities. Network node 515 can be any type of radio network node or any network node that communicates with a UE and / or with another network node. Examples of network node 515 include an eNodeB, a Node B, a base station, a wireless access point (for example, a Wi-Fi access point), a low power node, a base transceiver station (BTS ), relay, donor node controller relay, transmission points, transmission nodes, remote RF unit (RRU), remote radio head (RRH), multi-standard radio node (MSR) such as MSR BS, nodes in system distributed antennas (DAS), O&M, OSS, SON, positioning node (for example, E-SMLC), MDT or any other suitable network node. Network nodes
[00111] [00111] Network node 515 may include one or more of transceivers 1410, processing circuit 1420, memory 1430 and network interface 1440. In some embodiments, transceiver 1410 facilitates the transmission of wireless signals to and receiving wireless signals UE 510 (for example, via antenna 1450), a set of processing circuits 1420 executes instructions to provide some or all of the functionality described above as being provided by a network node 515, memory 1430 stores the instructions executed by the processing 1420 and network interface 1440 communicates signals to backend network components, such as gateway, switch, router, Internet, public switched telephone network (PSTN), core network nodes or radio network controllers 130, etc.
[00112] [00112] The processing circuit 1420 may include any suitable combination of hardware and software implemented in one or more modules to execute instructions and manipulate data to perform some or all of the functions described in network node 515, such as those described above in relation to to FIGURES 1-12. above. In some embodiments, the processing circuit 1420 may include, for example, one or more computers, one or more central processing units (CPUs), one or more microprocessors, one or more applications.
[00113] [00113] The 1430 memory is generally operable to store instructions, such as a computer program, software, an application including one or more logic, rules, algorithms, code, tables, etc. and / or other instructions capable of being executed by a processing circuit
[00114] [00114] In some embodiments, the network interface 1440 is communicatively coupled to a set of processing circuits 1420 and can refer to any suitable device operable to receive input to network node 515, send output from network node 515, execute proper processing of the input or output or both, communicate other devices, or any combination of the foregoing. The 1440 network interface can include appropriate hardware (for example, port, modem, network interface card, etc.) and software, including protocol conversion and data processing capabilities, for communication over a network.
[00115] [00115] Other modalities of network node 515 may include additional components in addition to those shown in FIGURE 14 that may be responsible for providing certain aspects of the functionality of the network node, including any of the features described above and / or any additional functionality (including any functionality needed to support the solution described above). The various different types of network nodes can include components with the same physical hardware, but configured (for example, via scaling) to support different radio access technologies, or they can represent partially or totally different physical components.
[00116] [00116] FIGURE 15 is a schematic diagram of a radio network controller or exemplary core network node 130, according to certain modalities. Examples of network nodes may include a mobile switching center (MSC), a GPRS server support node (SGSN), a mobility management entity (MME), a radio network controller (RNC), a radio controller base station (BSC) and so on. The radio network controller or core network node 130 includes processing circuitry 1520, memory 1530 and network interface 1540. In some embodiments, processing circuitry 1520 executes instructions to provide some or all of the functionality described above as being provided by the network node, memory 1530 stores the instructions executed by the processing circuit 1520 and the network interface 1540 communicates the signals to any suitable node, such as gateway, switch, router, Internet, public switched telephone network (PSTN), network nodes 515, radio network controllers or core network nodes 130, etc.
[00117] [00117] Processing circuit 1520 may include any suitable combination of hardware and software implemented in one or more modules to execute instructions and manipulate data to perform some or all of the functions described in the radio network controller or main network node 130. In some embodiments, the processing circuit 1520 may include, for example, one or more computers, one or more central processing units (CPUs), one or more microprocessors, one or more applications, and / or other logic.
[00118] [00118] The 1530 memory is generally operable to store instructions, such as a computer program, software, an application including one or more among logic, rules, algorithms, code, tables, etc. and / or other instructions capable of being executed by a 1520 processing circuit. Examples of 1530 memory include computer memory (for example, Random Access Memory (RAM) or Read-Only Memory (ROM), mass storage medium ( eg a hard disk), removable storage medium (eg a compact disc) or a digital video disc (DVD)) and / or any other volatile or non-volatile, non-transitory, computer-readable and / or computer-executable memory devices that can store information.
[00119] [00119] In some embodiments, the network interface 1540 is communicatively coupled to a set of processing circuits 1520 and can refer to any suitable operable device to receive input to the network node, send output through the network node, perform processing input or output, or both, communicate to other devices, or any combination of the foregoing. The 1540 network interface can include appropriate hardware (for example, port, modem, network interface card, etc.) and software, including protocol conversion and data processing capabilities, for communication over a network.
[00120] [00120] Other modalities of the network node may include additional components in addition to those shown in FIGURE 15 that may be responsible for providing certain aspects of the functionality of the network node, including any of the features described above and / or any additional functionality (including any functionality needed to support the solution described above).
[00121] [00121] FIGURE 16 is a block diagram of an exemplary UE, according to certain modalities. The UE 510 may include one or more modules. For example, UE 510 may include a determination module 1610, a communication module 1320, a receiving module 1630, an input module 1640, a display module 1650 and any other suitable modules. In some embodiments, a determination module or module 1610, communication module 1620, reception module 1630, input module 1640, display module 1650 or any other suitable module can be implemented using a set of processing circuits, such as a set of circuits process numbers 1420 described above in relation to FIGURE 14. In certain embodiments, the functions of two or more of the various modules can be combined into a single module. The UE 510 can perform the methods for controlling the DRX connected mode operations described above in relation to FIGURES 1-12.
[00122] [00122] The determination module 1610 can perform the processing functions of the UE 510. For example, the determination module 1610 can monitor a DL control channel for a duration of at least one first timer. As another example, the determination module 1610 may, after receiving the indication of the DL or UL transmission to the UE, stop monitoring the first timer. After the first timer is stopped, the UE does not need to monitor the downlink control channel. As yet another example, the determination module 1610 can start a second timer, after receiving the indication for downlink or uplink transmission to the UE, the duration of the second matrix timer comprising a lag period. As yet another example, the determination module 1610 can, when the second timer expires, start a third timer. As another example, the determination module 1610 can monitor the DL control channel for the duration of the third timer. As another example, the determination module 1610 can enter a batch reception mode when the third timer expires.
[00123] [00123] The determination module 1610 can include or be included in one or more processors, such as the processing circuit 1320 described above in relation to FIGURE 13. The determination module 1610 can include set of analog and / or digital circuits configured for perform any of the functions of the determination module 1610 and / or set of processing circuits 1320 described above. The functions of the determination module 1610 described above can, in certain modalities, be performed in one or more distinct modules.
[00124] [00124] The 1620 communication module can perform the transmission functions of the UE 510. For example, the 1620 communication module can perform a UL transmission associated with the DL or UL transmission indicated for the UE. The communication module 1620 can transmit messages to one or more of the network nodes 515 of the network 500. The communication module 1620 can include a transmitter and / or a transceiver, such as the transceiver 1310 described above in relation to FIGURE 13. The 1620 communication module may include a set of circuits configured to transmit messages and / or wireless signals. In particular modes, the 1620 communication module can receive messages and / or signals for transmission from the determination module
[00125] [00125] The receiving module 1630 can perform the receiving functions of the UE 510. As an example, the receiving module 1630 can receive, on the monitored DL control channel, an indication of a DL or UL transmission to the UE . As another example, the receiving module 1630 can receive a message including information about a duration of at least one between the second and third timers. The receiving module 1630 may include a receiver and / or a transceiver, such as the transceiver 1310 described above in relation to FIGURE 13. The receiving module 1630 may include circuitry configured to receive messages and / or wireless signals. In particular embodiments, the receiving module 1630 can communicate messages and / or signals received to the determination module 1610. The functions of the receiving module 1630 described above can, in certain modalities, be performed in one or more distinct modules.
[00126] [00126] The 1640 input module can receive user input for the UE 510. For example, the input module can receive keystrokes, button presses, touches, finger slides, audio signals, video signals and / or any other appropriate signs. The input module can include one or more keys, buttons, levers, switches, touch screens, microphones and / or cameras. The input module can communicate signals received to the determination module 1610. The functions of the input module 1640 described above can, in certain modalities, be performed in one or more different modules.
[00127] [00127] The 1650 display module can display signals on a UE 510 screen. The 1650 display module can include the display and / or any appropriate circuit and hardware configured to display signals on the screen. The 1650 display module can receive signals to display on the screen from the 1610 determination module. The functions of the 1650 display module described above can, in certain modalities, be performed in one or more different modules.
[00128] [00128] The determination module 1610, the communication module 1620, the receiving module 1630, the input module 1640 and the display module 1650 can include any suitable hardware and / or software configuration. The UE 510 may include additional modules in addition to those shown in FIGURE 16, and may be responsible for providing any suitable functionality, including any of the features described above and / or any additional functionality (including any functionality necessary to support the various solutions described here) .
[00129] [00129] FIGURE 17 is a block diagram of an exemplary network node 515 according to certain modalities. Network node 515 can include one or more modules. For example, network node 515 can include determination module 1710, communication module 1720, reception module 1730 and any other suitable modules. In some embodiments, one or more of the determination module 1710, communication module 1720, reception module 1730 or any other suitable module can be implemented using one or more processors, such as the processing circuit sets 1420 described above in relation to FIGURE 15. In certain embodiments, the functions of two or more of the various modules can be combined into a single module. Network Node 515 can execute the methods to control the DRX connected mode operations described above in relation to FIGURES 1-12.
[00130] [00130] Determination module 1710 can perform the processing functions of network node 515. For example, determination module 1710 can determine the duration of a first timer and the duration of a second timer, the first and the second timers for use by an EU device to control the batch reception operation, where the duration of the first timer comprises a lag period. The determination module 1710 can include or be included in one or more processors, such as the processing circuit 1420 described above in relation to FIGURE 14. The determination module 1710 can include set of analog and / or digital circuits configured to perform any of the functions of the determination module 1710 and / or set of processing circuits 1420 described above. The functions of the 1710 determination module can, in certain modalities, be performed in one or more different modules.
[00131] [00131] The communication module 1720 can perform the transmission functions of the network node 515. As an example, the communication module 1720 can send the UE information about the duration of the first timer and the duration of the second timer. As another example, the communication module 1720 can send a message to the UE including information about the duration of the first timer and the duration of the second timer. As yet another example, the 1720 communication module can send an indication of a DL or UL transmission to the UE to the UE. The 1720 communication module can transmit messages to one or more UEs
[00132] [00132] The receiving module 1730 can perform the receiving functions of network node 515. For example, the receiving module 1730 can receive, from a UF, a UL transmission associated with the DL or UL transmission indicated for the UE . The 1730 receiving module can receive any suitable information from a UE. The receiving module 1730 can include a receiver and / or a transceiver, such as the transceiver 1410 described above in relation to FIGURE 14. The receiving module 1730 can include circuitry configured to receive wireless messages and / or signals. In particular embodiments, the 1730 receiving module can communicate messages and / or signals received to the 1710 determination module or any other suitable module. The functions of the 1730 receiving module can, in certain modalities, be executed in one or more different modules.
[00133] [00133] The 1710 determination module, 1720 communication module and 1730 reception module can include any suitable hardware and / or software configuration. Network node 515 may include additional modules in addition to those shown in FIGURE 17, and may be responsible for providing any suitable functionality, including any of the features described above and / or any additional functionality (including any functionality necessary to support the various solutions described here. ).
[00134] [00134] The following text provides additional explanations regarding certain modalities and proposals described here, and should not be seen as limiting the scope of the invention. The DRX connected mode features in legacy LTE and eMTC are based on the following parameters (excluding short DRX parameters): º OnDurationTimer * - drxStartOffset (marked as longDRX-CycleStartOffset at 36,331) * - longDRX-Cycle (marked as longDRX-CycleStartOffset at 36,331)
[00135] [00135] The first three parameters can be reused, as well as the NB-loT, except the value ranges that need to be analyzed later. The last two parameters are related to the operation of the HARQ operation. The drx-inactivityTimer parameter is used to control when the UE enters DRX after inactivity (unless a MAC CE is signaled), so the treatment of this parameter is mainly discussed. As it is already decided to support only one HARQ process per direction and if the half-duplex operation for the UE is assumed, changes / simplifications in these last three parameters can be discussed and made even though the details of the HARQ operations are not yet fully decided .
[00136] [00136] Due to the reception / transmission capabilities of NB-loT UE being half-duplex and having only one HARQ process per direction, the handling of the timer in DRX activity and the HARQ retransmission timers for the connected DRX mode can be changed / simplified. Therefore, according to certain modalities, the drxStartoffset, longDRX-Cycle and OnDurationTimer legacy parameters can be reused as is for the DRX connected mode with suitable value ranges for NB-loT.
[00137] [00137] In the following examples, it is assumed that the high level concept for HARQ operations for NB-loT is similar to eMTC. To summarize the following is assumed: * —Downlink / uplink data is programmed by a message on the downlink control channel NB-PDCCH.
[00138] [00138] In the next modalities, XRD operations are explained by the application of these HARQ assumptions. Note that the duration of the transmissions and the lags between transmissions can vary in size. According to one modality, we use the legacy behavior for the DRX operation with the drx-InacthityTimer and apply it to NB-loT. The timer is started every time there is a new transmission programmed either on the UL or on the DL on the NB-PDCCH. In that case, the downlink transmission is successful and additional data is not programmed, so the UE goes into DRX suspension upon expiration of the timer.
[00139] [00139] According to another modality, there is a retransmission of HARQ. downlink when using legacy DRX timers in NB-loT. The HARQ-RTT-Timer / drx-RetransmissionTimer timers are used for this and the latter is canceled when the retransmission is received.
[00140] [00140] Compared to legacy LTE, the uplink HARQ for eEMTC (and LAA) has been changed from synchronous to asynchronous. It is assumed here that there is probably a need to introduce something similar like HARQ-RTT-Timer / drx-RetransmissionTimer also for uplink due to asynchronous HARQ. For NB-loT, it is assumed that such timers will be needed when discussing the legacy of DRX. Thus, according to another modality, there is a retransmission of HARQ on the uplink with a new timer assumed. Similar to the downlink case, the timer is canceled when the UE detects that a retransmission is scheduled. Note that we call it drx-RetransmissionTimer, even though it is not really a "retransmission timer", as the UE does not know the result of the transmission. This can also be referred to as a HARQ- FeedbackWindowTimer.
[00141] [00141] As discussed, legacy DRX timers can also be used for NB-loT. This legacy scheme was developed with mobile broadband use cases, which include multiple HARQ processes in both directions and full duplex operations (except for TDD, of course). For these use cases (except for VoLTE) the energy consumption of the UE in relation to being awake some extra subframes here and there is not a problem. However, for the NB-loT, it is very important that the active time of the UE (ie, when monitoring the NB-PDCCH) is as short as possible also during the connected mode in many of the use cases, to obtain a good time battery power.
[00142] [00142] A problem with the legacy approach is how to set the value of drx-InactivityTimer * to a short value: this is good for UE power consumption, but will introduce additional latency in case of HARQ DL retransmissions, since the timer ( probably) expired at the time the retransmission ended and then the new data must wait for the next occurrence of OnDuration. A disadvantage of introducing this additional latency is that the UE needs to be in connected mode for longer. In addition, the long time spent in connected mode (especially if long cycles of XRD are also used) can lead to the risk of greater channel variations and loss of synchronization.
[00143] [00143] According to particular modalities, a solution to the above problem would be to change the drx-InaclixityTlimer so that it is restarted at each reception of the NB-PDCCH, that is, regardless of whether it is a new transmission or a retransmission (both from uplink and downlink). Then, a short drx-InactivityTimer value could be used at the same time that no extra latency was introduced. If this is done, then there is no need for any HARQ-RTT-Timer / drxRetransmissionTimer retransmission timer, as only one timer can be used to monitor both UL / DL retransmissions and inactivity. This also decreases the complexity of the UE, as only one timer is needed. According to this modality, the drx-InactivityTimer is restarted on reception of any DCI on the NB-PDCCH.
[00144] [00144] According to additional modalities, there is no need for the HARQ-RTT-Timer and drx-RetransmissionTimer timers for any downlink or uplink if the criteria for starting the drx-InactivityTimer timer is changed. A successful NB-PDCCH reception at the UE will be followed by an uplink transmission that contains SRB / DRB data (in the case of an UL grant) or HARQ feedback (in the case of a DL assignment). If it is assumed that a UE is not required to monitor the NB-PDCCH after it has been programmed until after transmission, additional changes to the start / restart of the drx-InactivityTimer could be made. The timer must then be stopped after each successful reception of the NB-PDCCH and started after the end of the uplink transmission that was triggered by the NB-PDCCH message. This will allow the UE to be able to turn off its receiver (and potentially enter hibernation mode) for longer periods of time in connected mode, especially if the time intervals between NB-PDCCH / NB-PDSCH / NB-PUSCH are long.
[00145] [00145] According to additional modalities, stopping the drx-InactivityTimer on the successful receipt of anything on the NB-PDCCH and starting it after transmitting the resulting uplink (from DRB / SRB or HARQ feedback) allows the UE to reduce the monitoring time NB-PDCCH and thus the energy consumption. Thus, according to certain modalities, the start and stop criteria for the drx-InactivityTimer are changed to UEs NB-loT to control the connected DRX mode. According to certain modalities, the drx- InactivityTimer start criterion must be changed after the transmission of HAROQ. NB-PUSCH, ACK or DRB / SRB data for a downlink assignment and an uplink grant, respectively. According to certain modalities, the drx-InactivityTimer stop criterion must be changed to when a downlink assignment or an uplink lease is received. According to certain modalities, the HARQ-RTT-Timer and drx-InactivityTimer cannot be used in NB-loT. According to certain modalities, if drx-InactivityTimer expires the UE does not need to monitor the NB-PDCCH until the next occurrence of OnDuration.
[00146] [00146] Most NB-loT use cases do not include simultaneous uplink / downlink traffic and, instead, most use cases depend on a type of request-response traffic pattern in which a packet | P is sent in one direction followed by a response in the other (potentially repeated according to the same pattern a few times for some use cases). This traffic pattern is also true for L3 signaling procedures (NAS / RRC). As a result, after HARQ feedback or SRB / DRB data has been transmitted on the uplink by a UE, there will be no NB-PDCCH activity for at least one HARQ Round Trip Time. During this time, an NB-loT UE may be allowed to not monitor the NB-PDCCH. Thus, according to certain modalities, a change in handling drx-InactivityTimer would not initiate it up to a lag value after uplink transmission.
[00147] [00147] In most use cases, there is no need for an UE to monitor the NB-PDCCH until at least one Round Trip Time after the uplink transmission has ended. Thus, according to certain modalities, the start of drx- InactivityTimer must be done with a lag value after the uplink transmission (from DRB / SRB or HARQ feedback) to allow the UE to reduce the monitoring time of the NB- PDCCH. The value of this lag depends, as described above, on Round Trip Time, but also on the design of the physical layer of the NB-PDCCH, for example, time alignments and how the NB-PDCCH and NB-PDSCH are multiplexed. The value can even be variable depending on the physical layer design and the coverage class of the UE. According to certain modalities, the drx-InactivityTimer start criterion could be defined as at least one Round Trip Time after the uplink transmission, but the details are left in FFS until more details of RAN1 are available in the NB-PDCCH project. Downlink / PDSCH. According to certain modalities, the semi-static DRX connected mode parameters for NB-loT are included as part of RrcConnectionReestablish, RrcConnectionSetup, RrcConnectionResume, that is, as part of Msg3. According to certain modalities, the parameters of the semi-static DRX connected mode must be applied directly when received at UF.
[00148] [00148] Modifications, additions or omissions can be made to the systems and devices described by the present invention without departing from the scope of the invention. The components of the systems and devices can be integrated or separated. In addition, system and device operations can be performed by more, less or other components. In addition, system and device operations can be performed using any suitable logic including software, hardware and / or other logic. As used in this document, "each" refers to each member of a set or each member of a subset of a set.
[00149] [00149] Modifications, additions or omissions can be made to the methods described by the present invention without departing from the scope of the invention. The methods can include more, less or other steps. In addition, the steps can be performed in any appropriate order.
[00150] [00150] Although this description has been described in terms of certain modalities, the changes and permutations of the modalities will be evident to those skilled in the art. Consequently, the above description of the modalities does not restrict this invention. Other changes, substitutions and alterations are possible without departing from the spirit and scope of this invention, as defined by the following claims.
Abbreviations used in the previous description include: 3GPP Partnership Project for third generation ACK AP Confirmation Access Point BS Base Station BSC Base Station Controller CPE Base Transceiver Equipment on D2D client facilities Device for DAS Device DCI Distributed Antenna System Downlink Control Information DL Downlink DRB Radio Data Carrier DRX Discontinuous Reception DTX Discontinuous Transmission eNB Evolved NodeB EPDCCH Downlink Control Channel Advanced Physical FDD Duplexing by Frequency Division HAROQ.
HSPA Repeat Hybrid Automatic Request Access to High Speed Package loT Internet of Things LAN Local Area Network LEE Laptop Integrated Equipment LME Laptop Mounted Long Term Evolution M2M Machine for MAN Machine Metropolitan Aerial Network MCE Multicast Coordination Entity / MCS Multicells Modulation Level and MIMO Coding Scheme Multiple Inputs and Multiple Outputs MR Measure Restriction MSR Multi-standard radio NACK Negative recognition NAS Stratum not accessible NB Narrowband NB-loT Narrowband NB-PDCCH Control channel NB-PDSCH Narrow Band Physical Downlink Shared Channel NB-PUSCH Narrow Band Physical Uplink Shared Channel NPDCCH Narrow Band Physical Downlink Control Channel NPUSCH Narrow Band Physical Downlink Shared Channel Narrowband OFDM Physical Uplink Splitting Multiplexing o Orthogonal Frequency PDCCH advanced physical downlink control channel PDSCH Shared Physical Downlink Channel PMI Precoded matrix indicator PRB physical resource block
PSTN Public switched telephone network PHICH Channel Physical Hybrid Indicator PUSCH Physical Uplink Shared Channel PUCCH Physical Uplink Control Channel RB Resource Block RI Radio Indicator Radio Network Controller RRC Radio Resource Control RRH Remote Radio Head RRU Remote RTT Radio Unit Round Trip Time SAW Stop-and-wait SRB TDD signaling radio carrier Time division duplex TFRE Uucl time frequency feature element! EU Uplink Control Information User Equipment UuL Uplink WAN Wide Area Network

权利要求:
Claims (35)
[1]
1. Method in user equipment (UE) (510), characterized by the fact that it comprises: monitoring (1104) a downlink control channel (610, 715, 810, 915) for a duration of at least one first timer ( 630, 725, 825, 925); receiving (1108), in the monitored downlink control channel, an indication of a downlink or uplink transmission (605, 705, 805, 905) to the UE; after receiving the indication of the downlink or uplink transmission to the UE, stop (1112) the first timer, in which after the first timer is stopped, the UE does not need to monitor the downlink control channel; performing (1116) an uplink transmission (635, 710, 830, 910) associated with the downlink or uplink transmission indicated for the UE; start (1120) a second timer (645, 735, 840, 935), after receiving the indication of downlink or uplink transmission to the UE, the duration of the second timer comprising a lag period; when the second timer expires, it starts (1124) a third timer (640, 730, 835, 930), in which the UE monitors the downlink control channel for the duration of the third timer, in which the first timer comprises one of a onDurationTimer of a discontinuous reception, XRD, cycle, a drx-InactivityTimer, and a retransmission timer, and in which the third timer comprises a drx-InactivityTimer.
[2]
2. Method according to claim 1, characterized by the fact that it comprises: entering a discontinuous reception mode when the third timer expires.
[3]
3. Method according to claim 1, characterized by the fact that the first timer is an onDurationTimer of a discontinuous reception cycle.
[4]
Method according to claim 1, characterized in that the first timer comprises a discontinuous retransmission timer.
[5]
5. Method according to claim 1, characterized by the fact that the second Round Trip Time (RTT) timer of the Hybrid Automatic Repeat Request (HARQ) comprising the lag period.
[6]
6. Method according to claim 1, characterized by the fact that: the indication of the downlink or uplink transmission to the UE comprises a downlink scheduling assignment (605, 805); and the uplink transmission associated with the indicated downlink transmission comprises a confirmation message (635, 830).
[7]
7. Method according to claim 1, characterized by the fact that: the indication of downlink or uplink transmission to the UE comprises an uplink concession (705, 905); and the uplink transmission associated with the indicated uplink transmission comprises a data transmission on the uplink (710, 910).
[8]
8. Method according to claim 1, characterized by the fact that the indication of the downlink or uplink transmission of the UE comprises information about a duration of at least one of the second and third timers.
[9]
9. Method according to claim 1, characterized in that it comprises receiving a message including information about a duration of at least one of the second and third timers.
[10]
10. Method according to any one of claims 1 to 9, characterized by the fact that the second timer is started so much: after performing the associated uplink transmission; or at the end of the indication received from the downlink or uplink transmission to the UE.
[11]
11. Method in a network node (515), characterized by the fact that it comprises: determining (1204) a duration of a first timer (645, 735, 840, 935) and a duration of a second timer (640, 730, 835, 930), the first and second timers for use by user equipment (UE) (510) to control the batch reception operation, wherein the duration of the first timer comprises a lag period; send (1208) to the UF, information about the duration of the first timer and the duration of the second timer; send an indication of a downlink or uplink transmission to the UE to the UE; and receive, from the UE, an uplink transmission (635, 710, 830, 910) associated with the downlink or uplink transmission indicated for the UE, where the duration of the first timer comprises one of: an amount of time that the UE wait after sending the uplink transmission associated with the indicated downlink or uplink transmission to the UE before the UE starts the second timer; and the amount of time that the UE waits after the end of the downlink or uplink transmission indication to the UE before the UE starts the second timer, and the second timer is a drx-InactivityTimer.
[12]
12. Method according to claim 11, characterized in that information about the duration of the first timer and the duration of the second timer is included in an indication of a downlink or uplink transmission (605, 705, 805, 905) for the UE.
[13]
13. Method according to claim 11, characterized in that the sending, to the UE, information about the duration of the first timer and the duration of the second timer comprises: sending a message to the UE, including information about the duration of the first timer and the duration of the second timer.
[14]
14. Method according to claim 11, characterized by the fact that: the indication of the downlink or uplink transmission to the UE comprises a downlink scheduling assignment (605, 805); and the uplink transmission associated with the indicated downlink transmission comprises a confirmation message (635, 830).
[15]
15. Method according to claim 11, characterized by the fact that: the indication of downlink or uplink transmission to the UE comprises an uplink concession (705, 905); and the uplink transmission associated with the indicated uplink transmission comprises a data transmission on the uplink (710, 910).
[16]
16. Method according to claim 11, characterized in that the duration of the second timer comprises an amount of time that the UE monitors a downlink control channel (610, 715, 810,915) before entering a reception mode discontinuous.
[17]
17. Method according to claim 11, characterized by the fact that the first timer is Round Trip Time (RTT) of the Hybrid Automatic Repeat Request (HARQ).
[18]
18. User equipment (UE) (510), characterized by the fact that it comprises: set of processing circuits (1320), the set of processing circuits configured to: monitor (1104) a downlink control channel (610, 715, 810, 915) for a duration of at least one first timer (630, 725, 825, 925); receiving (1108), in the monitored downlink control channel, an indication of a downlink or uplink transmission (605, 705, 805, 905) to the UE; after receiving the indication of the downlink or uplink transmission to the UE, stop (1112) monitoring the first timer, where after the first timer is stopped, the UE does not need to monitor the downlink control channel; performing (1116) an uplink transmission (635, 710, 830, 910) associated with the downlink or uplink transmission indicated for the UE; start (1120) a second timer (645, 735, 840, 935), after receiving the indication of downlink or uplink transmission to the UE, the duration of the second timer comprising a lag period; when the second timer expires, it starts (1124) a third timer (640, 730, 835, 930), in which the UE monitors the downlink control channel for the duration of the third timer, in which the first timer comprises one of a onDurationTimer of a DRX cycle, a drx-InactivityTimer, and a DRX retransmission timer, and where the third timer comprises a drx-InactivityTimer.
[19]
19. UE according to claim 18, characterized in that the set of processing circuits is configured to: enter a discontinuous reception mode when the third timer expires.
[20]
20. UE according to claim 18, characterized by the fact that the first timer is an onDurationTimer of a discontinuous reception cycle.
[21]
21. UE according to claim 18, characterized by the fact that the first timer is a drx-InactivityTimer.
[22]
22. UE according to claim 18, characterized in that the first timer comprises a discontinuous retransmission timer.
[23]
23. UE according to claim 18, characterized by the fact that the second timer is a Hybrid Automatic Repeat Request (HARQ) Round Trip Time (RTT) timer that comprises the lag period.
[24]
24. UE according to claim 18, characterized by the fact that: the indication of the downlink or uplink transmission to the UE comprises a downlink scheduling assignment (605, 805); and the uplink transmission associated with the indicated downlink transmission comprises a confirmation message (635, 830).
[25]
25. UE according to claim 18, characterized by the fact that: the indication of downlink or uplink transmission to the UE comprises an uplink concession (705, 905); and the uplink transmission associated with the indicated uplink transmission comprises a data transmission on the uplink (710, 910).
[26]
26. UE according to claim 18, characterized by the fact that the indication of the downlink or uplink transmission to the UE comprises information about a duration of at least one of the second and third timers.
[27]
27. UE according to claim 18, characterized in that the processing circuitry is configured to receive a message that includes information about a duration of at least one of the second and third timers.
[28]
28. UE according to any one of claims 18 to 27, characterized by the fact that the set of processing circuits is configured to start the second timer both: after performing the associated uplink transmission; or at the end of the indication received from the downlink or uplink transmission to the UE.
[29]
29. Network node (515), characterized by the fact that it comprises: set of processing circuits (1420), the set of processing circuits configured to: determine (1204) a duration of a first timer (645, 735, 840 , 935) and a duration of a second timer (640, 730, 835, 930), the first and second timers for use by user equipment (UE) (510) to control the batch reception operation, where the duration the first timer comprises a lag period; send (1208), to the UE, information about the duration of the first timer and the duration of the second timer; send an indication of a downlink or uplink transmission to the UE to the UE; and receiving an uplink transmission (635, 710, 830, 910) from the UE associated with the downlink or uplink transmission indicated for the UE.
wherein the duration of the first timer comprises one of: an amount of time that the UE waits after sending the uplink transmission associated with the downlink or associated uplink transmission to the UE before the UE starts the second timer; and the amount of time the UE waits after the end of the downlink or uplink transmission indication to the UE before the UE starts the second timer, and the second timer is a drx-InactivityTimer.
[30]
30. Network node according to claim 29, characterized in that the information about the duration of the first timer and the duration of the second timer is included in an indication of a downlink or uplink transmission (605, 705, 805, 905) for the UE.
[31]
31. Network node according to claim 29, characterized in that the set of processing circuits is configured to send, to the UE, information about the duration of the first timer and the duration of the second timer by sending a message for the UE, including information about the duration of the first timer and the duration of the second timer.
[32]
32. Network node according to claim 29, characterized by the fact that: the indication of the downlink or uplink transmission to the UE comprises a downlink scheduling assignment (605, 805); and the uplink transmission associated with the indicated downlink transmission comprises a confirmation message (635, 830).
[33]
33. Network node according to claim 29, characterized by the fact that: the indication of downlink or uplink transmission to the UE comprises an uplink concession (705, 905); and the uplink transmission associated with the indicated uplink transmission comprises a data transmission on the uplink (710, 910).
[34]
34. Network node according to claim 29, characterized by the fact that the duration of the second timer comprises an amount of time that the UE monitors a downlink control channel (610, 715, 810, 915) before entering into a discontinuous reception mode.
[35]
35. Network node according to claim 29, characterized by the fact that the first Round Trip Time (RTT) timer of the Hybrid Automatic Repeat Request (HARQ).

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法律状态:
2021-08-24| B350| Update of information on the portal [chapter 15.35 patent gazette]|

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2021-12-07| B350| Update of information on the portal [chapter 15.35 patent gazette]|

优先权:

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申请号 | 申请日 | 专利标题

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US201662277202P| true| 2016-01-11|2016-01-11|

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US62/277,202|2016-01-11|

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PCT/IB2017/050135|WO2017122135A1|2016-01-11|2017-01-11|Method for controlling connected mode drx operations|

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