WO2021259343A1 - Adaptation efficace d'économie d'énergie d'ue dans une nouvelle radio (nr) 5g - Google Patents

Adaptation efficace d'économie d'énergie d'ue dans une nouvelle radio (nr) 5g Download PDF

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Publication number
WO2021259343A1
WO2021259343A1 PCT/CN2021/101955 CN2021101955W WO2021259343A1 WO 2021259343 A1 WO2021259343 A1 WO 2021259343A1 CN 2021101955 W CN2021101955 W CN 2021101955W WO 2021259343 A1 WO2021259343 A1 WO 2021259343A1
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Prior art keywords
power saving
dci
parameters
saving parameters
response
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PCT/CN2021/101955
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English (en)
Inventor
Yi-ju LIAO
Wei-De Wu
Yi-Chia LO
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Mediatek Inc.
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Publication of WO2021259343A1 publication Critical patent/WO2021259343A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0219—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave where the power saving management affects multiple terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
    • H04W52/028—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the disclosed embodiments relate generally to wireless communication, and, more particularly, to efficient adaptation of User Equipment (UE) power saving in 5G New Radio (NR) .
  • UE User Equipment
  • NR 5G New Radio
  • LTE Long-Term Evolution
  • 4G Long-Term Evolution
  • UMTS Universal Mobile Telecommunication System
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • eNodeBs or eNBs evolved Node-Bs
  • UEs User Equipments
  • 3GPP 3 rd Generation Partner Project
  • the 3 rd Generation Partner Project (3GPP) network normally includes a hybrid of 2G/3G/4G systems. With the optimization of the network design, many improvements have developed over the evolution of various standards.
  • the Next Generation Mobile Network (NGMN) board has decided to focus the future NGMN activities on defining the end-to-end requirements for 5G New Radio (NR) systems.
  • NR 5G New Radio
  • DRX Discontinuous Reception
  • a UE In a DRX operation, a UE generally performs wireless reception in a DRX ON duration, and switches to a power saving mode in a DRX OFF duration since the network will not be transmitting any data to the UE in the OFF duration. Specifically, the UE needs to monitor the Physical Downlink Control Channel (PDCCH) in the DRX ON duration, to see if the network transmits any data to the UE. With the DRX operation, the UE is allowed to go to sleep in the DRX OFF duration of each DRX cycle, which reduces the UE’s power consumption.
  • PDCCH Physical Downlink Control Channel
  • a method for efficient adaptation of User Equipment (UE) power saving is proposed.
  • a UE performs a Discontinuous Reception (DRX) operation.
  • the UE detects a Downlink Control Information (DCI) during the DRX operation, wherein the DCI comprises a first indication of an adaptation on one set of one or more power saving parameters.
  • the UE adjusts the set of the power saving parameters in the DRX operation according to the first indication.
  • the UE performs power saving in the DRX operation using the set of adjusted power saving parameters.
  • DCI Downlink Control Information
  • the set of the power saving parameters may comprise at least one of the following: one or more minimum scheduling offsets, one or more Physical Downlink Control Channel (PDCCH) monitoring periodicity parameters, one or more maximum numbers of Multi-input Multi-output (MIMO) layers, and a number of active Transmission or Reception Points (TRPs) .
  • PDCCH Physical Downlink Control Channel
  • MIMO Multi-input Multi-output
  • TRPs active Transmission or Reception Points
  • the UE receives UE-specific Radio Resource Control (RRC) configurations, wherein the UE-specific RRC configurations comprise one or more sets of power saving parameters.
  • RRC Radio Resource Control
  • the adjusting of the set of the power saving parameters comprises: in response to the UE-specific RRC configurations comprising only one set of power saving parameters, applying or not applying the only one set of the power saving parameters based on the first indication, or applying a combination of the only one set of the power saving parameters.
  • the adjusting of the set of the power saving parameters comprises: in response to the UE-specific RRC configurations comprising multiple sets of power saving parameters, applying one of the multiple sets of the power saving parameters based on the first indication.
  • the DCI uses a DCI format 0_1, 1_1, 0_2, 1_2, or 2_6, wherein the DCI with DCI format 0_1, 1_1, 0_2, or 1_2 may be referred to as UE-specific DCI, while the DCI with DCI format 2_6 may be referred to as group-UE-specific DCI.
  • the DCI with DCI format 2_6 is detected in a DRX active time of the DRX operation, and the method further comprises: using a wake-up indication or a Secondary Cell (SCell) dormancy indication comprised in the DCI with DCI format 2_6 as the first indication.
  • SCell Secondary Cell
  • the adjusting of the set of the power saving parameters is performed in response to a first condition that the UE successfully completes a Hybrid Automatic Repeat request (HARQ) process associated with the detection of the DCI, or in response to a second condition that a period of time subsequent to the detection of the is elapsed, or in response to a third condition that the UE successfully completes all HARQ processes.
  • the adjusting of the set of the power saving parameters is performed in an activated CC in response to the first condition or the second condition fulfilling in the activated CC, or is performed in all activated CCs in response to the first condition or the second condition fulfilling in all activated CCs.
  • the adjusting of the set of the power saving parameters is performed after an application delay comprising a period of time subsequent to the detection of the DCI.
  • the UE applies a set of parameters that are not for power saving in the DRX operation in response to a period of time subsequent to performing power saving in the DRX operation using the set of adjusted power saving parameters is elapsed, or in response to detecting a DCI comprising a second indication of the UE not to use the set of adjusted power saving parameters in the DRX operation, or in response to receiving DCI scheduling UE-specific data.
  • Figure 1 illustrates an exemplary 5G New Radio (NR) network 100 supporting efficient adaptation of User Equipment (UE) power saving in accordance with aspects of the current invention.
  • NR 5G New Radio
  • Figure 2 illustrates simplified block diagrams of wireless devices, e.g., a UE 201 and a gNB/TRP 211 in accordance with embodiments of the current invention.
  • FIG. 3 illustrate an example of using DCI format 2_6 to carry PSI in accordance with one novel aspect of the current invention.
  • FIG. 4 illustrate an example of conditional power saving in accordance with one novel aspect of the current invention.
  • Figure 5 illustrates a flow chart of a method for efficient adaptation of UE power saving in accordance with one novel aspect of the current invention.
  • FIG. 1 illustrates an exemplary 5G New Radio (NR) network 100 supporting efficient adaptation of User Equipment (UE) power saving in accordance with aspects of the current invention.
  • the 5G NR network 100 comprises a UE 110 communicatively connected to one or more gNBs or Transmission/Reception Points (TRPs) , including the gNB/TRP 121 and the gNB/TRP 122 operating in a licensed band (e.g., 30GHz ⁇ 300GHz for mmWave) , of an access network 120 which provides radio access using a Radio Access Technology (RAT) (e.g., the 5G NR technology) .
  • RAT Radio Access Technology
  • the access network 120 is connected to a 5G core network 130 by means of the NG interface, more specifically to a User Plane Function (UPF) by means of the NG user-plane part (NG-u) , and to a Mobility Management Function (AMF) by means of the NG control-plane part (NG-c) .
  • UPF User Plane Function
  • AMF Mobility Management Function
  • One gNB can be connected to multiple UPFs/AMFs for the purpose of load sharing and redundancy.
  • the UE 110 may be a smart phone, a wearable device, an Internet of Things (IoT) device, and a tablet, etc.
  • UE 110 may be a Notebook (NB) or Personal Computer (PC) inserted or installed with a data card which includes a modem and RF transceiver (s) to provide the functionality of wireless communication.
  • Each of the gNB/TRP 121 and the gNB/TRP 122 may provide communication coverage for a geographic coverage area in which communications with the UE 110 is supported via a communication link.
  • the communication links between the gNB/TRP 121/122 and the UE 110 may utilize one or more frequency carriers to form one or more cells (e.g., a PCell and one or more SCells) .
  • each communication link may be used to carry uplink transmissions from the UE 110 to the associated gNB (e.g., on the Physical Uplink Control Channel (PUCCH) or Physical Uplink Shared Channel (PUSCH) ) or to carry downlink transmissions from the associated gNB to the UE 110 (e.g., on the Physical Downlink Control Channel (PDCCH) or Physical Downlink Shared Channel (PDSCH) ) .
  • the UE 110 may be configured to perform a Discontinuous Reception (DRX) operation in which the UE 110 monitors the PDCCH in the DRX active time (e.g., configured by the gNB/TRP 121/122) .
  • DRX Discontinuous Reception
  • the UE 110 may detect a DCI (e.g., using a DCI format 0_1, 1_1, 0_2, 1_2, or 2_6) comprising an indication of adaptation on one set of power saving parameters in the 5G NR network 100, and adjust the set of power saving parameters in the DRX operation according to the indication (referred to herein as Power Saving Indication (PSI) ) . After that, the UE 110 may perform power saving in the DRX operation using the set of adjusted power saving parameters.
  • a DCI e.g., using a DCI format 0_1, 1_1, 0_2, 1_2, or 2_6
  • PSI Power Saving Indication
  • the PSI may include at least one of a first indication of which set of power saving parameters to use, and a second indication of which condition for power saving to use. Note that the adaptation on the set of power saving parameters does not introduce data interruption to the UE 110.
  • the first indication may indicate the UE 110 to use or not to use the set of power saving parameters, if only one set of power saving parameters is configured.
  • the first indication may indicate the UE 110 to use one of a plurality of power saving parameters, if multiple sets of power saving parameters are configured.
  • the second indication may indicate the UE 110 to check on which one of a plurality of conditions for power saving before applying the set of power saving parameters, if multiple conditions for power saving are configured (e.g., by UE-specific Radio Resource Control (RRC) signaling) .
  • RRC Radio Resource Control
  • the set (s) of power saving parameters and/or the condition (s) for power saving may be preconfigured by UE-specific RRC configurations.
  • a dedicated new Information Element (IE) in RRC configuration may be introduced to indicate the set (s) of power saving parameters.
  • the first indication may include 1 bit which indicates the UE 110 to use the configured set of power saving parameters, when the bit is set to a value (e.g., “0” or “1” ) , or indicates the UE 110 not to use the configured set of power saving parameters when the bit is set to another value (e.g., “1” or “0” ) .
  • legacy UE-specific RRC signaling may be reused to indicate the set (s) of power saving parameters.
  • the first indication may include 1 bit which indicates the UE 110 to use which value of each parameter in the configured set of power saving parameters according to the set value (e.g., “0” or “1” ) of the bit, as follows: 1) to use the first or second value of the configured minimum scheduling offsets (same rule as defined for minimum scheduling offset adaptation in Rel-16 of 3GPP specifications for 5G NR) , 2) to use the group 0 or group 1 SSS (same rule as defined for SSS switching in Rel-16 of 3GPP specifications for 5G NR) , and 3) to use BWP-specific or carrier-specific maximum DL MIMO layer number.
  • the first indication may include 1 bit which indicates the UE 110 to use the first configured set of power saving parameters, when the bit is set to a value (e.g., “0” or “1” ) , or indicates the UE 110 to use the second configured set of power saving parameters when the bit is set to another value (e.g., “1” or “0” ) .
  • a set of power saving parameters may comprise at least one of the following: minimum scheduling offset K0 and/or K2, one or more PDCCH monitoring periodicity parameters, one or more maximum numbers of Multi-input Multi-output (MIMO) layers, and a number of active TRPs (e.g., whether to enable TRP transmission by configuring the number of active TRPs to be greater than 1) .
  • each set of power saving parameters may only comprise the parameters not related to Radio Frequency (RF) turning on/off or retuning, such as the minimum scheduling offset K0 and/or K2, and the PDCCH monitoring periodicity.
  • RF Radio Frequency
  • the PDCCH monitoring periodicity parameter may be a scaling factor (e.g., N) to be multiplied to the legacy PDCCH monitoring period (e.g., P) , so that the PDCCH monitoring periodicity may be calculated as N*P; and this reduction of PDCCH monitoring periodicity may be applied to User-specific Search Space (USS) only or to USS and type 3 Common Space Set (CSS) .
  • USS User-specific Search Space
  • SCSS Common Space Set
  • the PDCCH monitoring periodicity parameter may be a Search Space Set (SSS) group indicator, and the UE 110 only needs to monitor PDCCH in the indicated group of SSS.
  • the PDCCH monitoring periodicity parameter may be an SSS indicator, and the UE 110 only needs to monitor PDCCH in the indicated SSS; and this reduction of PDCCH monitoring periodicity may be applied to USS only or to USS and type 3 CSS. If the maximum number of DL MIMO layers is applied/effective, the UE 110 does not expect to be scheduled with data with DL MIMO layer number larger than this configured value. If the number of active TRPs is applied/effective, the UE 110 does not expect to monitor DCI for receiving PDSCH data from TRP larger than the configured value.
  • SSS Search Space Set
  • FIG. 2 illustrates simplified block diagrams of wireless devices, e.g., a UE 201 and a gNB/TRP 211 in accordance with embodiments of the current invention.
  • the gNB/TRP 211 has an antenna 215, which transmits and receives radio signals.
  • a Radio Frequency (RF) transceiver module 214 coupled with the antenna 215, receives RF signals from the antenna 215, converts them to baseband signals and sends them to the processor 213.
  • the RF transceiver 214 also converts received baseband signals from the processor 213, converts them to RF signals, and sends out to the antenna 215.
  • the processor 213 processes the received baseband signals and invokes different functional modules to perform features in the gNB/TRP 211.
  • the memory 212 stores program instructions and data 220 to control the operations of the gNB/TRP 211.
  • the gNB/TRP 211 also includes a protocol stack 280 and a set of control function modules and circuits 290.
  • the protocol stack 280 may include a Non-Access-Stratum (NAS) layer to communicate with an AMF/SMF/MME entity connecting to the core network, a Radio Resource Control (RRC) layer for high layer configuration and control, a Packet Data Convergence Protocol/Radio Link Control (PDCP/RLC) layer, a Media Access Control (MAC) layer, and a Physical (PHY) layer.
  • NAS Non-Access-Stratum
  • RRC Radio Resource Control
  • PDCP/RLC Packet Data Convergence Protocol/Radio Link Control
  • MAC Media Access Control
  • PHY Physical
  • control function modules and circuits 290 include a DRX configuration circuit 291 that configures the RRC parameters for DRX operation to the UE 201, and a DCI generation circuit 292 that generates a DCI with or without a PSI.
  • the UE 201 has a memory 202, a processor 203, and an RF transceiver module 204.
  • the RF transceiver 204 is coupled with the antenna 205, receives RF signals from the antenna 205, converts them to baseband signals, and sends them to the processor 203.
  • the RF transceiver 204 also converts received baseband signals from the processor 203, converts them to RF signals, and sends out to the antenna 205.
  • the processor 203 processes the received baseband signals and invokes different functional modules and circuits to perform features in the UE 201.
  • the memory 202 stores data and program instructions 210 to be executed by the processor 203 to control the operations of the UE 201.
  • Suitable processors include, by way of example, a special purpose processor, a Digital Signal Processor (DSP) , a plurality of micro-processors, one or more micro-processor associated with a DSP core, a controller, a microcontroller, Application Specific Integrated Circuits (ASICs) , File Programmable Gate Array (FPGA) circuits, and other type of Integrated Circuits (ICs) , and/or state machines.
  • DSP Digital Signal Processor
  • ASICs Application Specific Integrated Circuits
  • FPGA File Programmable Gate Array
  • ICs Integrated Circuits
  • a processor in associated with software may be used to implement and configure features of the UE 201.
  • the UE 201 also includes a protocol stack 260 and a set of control function modules and circuits 270.
  • the protocol stack 260 may include a NAS layer to communicate with an AMF/SMF/MME entity connecting to the core network, an RRC layer for high layer configuration and control, a PDCP/RLC layer, a MAC layer, and a PHY layer.
  • the Control function modules and circuits 270 may be implemented and configured by software, firmware, hardware, and/or combination thereof. The control function modules and circuits 270, when executed by the processor 203 via program instructions contained in the memory 202, interwork with each other to allow the UE 201 to perform embodiments and functional tasks and features in the network.
  • control function modules and circuits 270 include a DRX operation circuit 271 that performs the DRX operation based on the DRX parameters configured by the gNB/TRP 211, a DCI detection circuit 272 that detects a DCI with or without a PSI, and a power saving control circuit 273 that controls operations related to UE power saving, including adjusting power saving parameters according to the PSI, and performing power saving in the DRX operation using the adjusted power saving parameters.
  • DCI format 0_1, 1_1, 0_2, 1_2 is used, in which a new bit field may be introduced as a PSI, or the existing bit field “minimum applicable scheduling offset indicator” may be repurposed as a PSI.
  • DCI format 2_6 is used, in which the bit field “Wake-up indication” or “SCell dormancy indication” may be repurposed as a PSI.
  • the bit field “Wake-up indication” or “SCell dormancy indication” is interpreted based on whether the DCI is detected in a DRX active time or not.
  • the UE in the current invention monitors the DCI format 2_6 in and outside the DRX active time.
  • Figure 3 illustrate an example of using DCI format 2_6 to carry PSI in accordance with one novel aspect of the current invention. As shown, outside the DRX active time, the bit field “Wake-up indication” (denoted as WUI in Figure 3) indicates to the UE whether or not to start drx-onDurationTimer for the next DRX cycle.
  • WUI bit field “Wake-up indication”
  • the bit field “Wake-up indication” is interpreted as a PSI (denoted as PSI in Figure 3) which serves to indicate the UE whether or not to apply the configured set of power saving parameters after receiving this indication.
  • PSI PSI in Figure 3
  • the bit field “SCell dormancy indication” may indicate the new set of power saving parameters for the corresponding group of SCell.
  • the bit field “SCell dormancy indication” may indicate the new set of power saving parameters for the current CC, if multiple sets of power saving parameters are configured.
  • Alt-1 DCI format 0_1, 1_1, 0_2, 1_2; and Alt-2: DCI format 2_6
  • Alt-1 DCI format 0_1, 1_1, 0_2, 1_2
  • Alt-2 DCI format 2_6
  • conditional power saving may be considered.
  • the UE may perform power saving accordingly, e.g., by applying the configured set of power saving parameters.
  • the condition for power saving may be that the UE successfully completes the Hybrid Automatic Repeat request (HARQ) process associated with the detected DCI with a PSI.
  • the condition for power saving may be that a timer configured by UE-specific RRC signaling expires, wherein the timer value may be decreased by one after each slot, or the timer value may be decreased by one if the UE does not receive UE-specific DCI/PDSCH.
  • the condition for power saving may be that the UE successfully completes all HARQ processes.
  • Figure 4 illustrate an example of conditional power saving in accordance with one novel aspect of the current invention.
  • the UE uses the set of parameters not for power saving.
  • the UE detects a DCI comprising a PSI.
  • the UE checks if the condition for power saving fulfills, in response to the PSI. Assuming that the condition for power saving fulfills, the UE switches to use the set of parameters for power saving at time t3. After a period of time, the UE switches back to use the set of parameters not for power saving at time t4, until the DRX active time elapses at time t5.
  • conditional power saving when a UE receives a PSI that allows it to perform power saving, the UE applies the indicated/configured set of power saving parameters if the condition for power saving fulfills, wherein the condition for power saving may be configured by UE-specific RRC signaling or may be predefined in 3GPP specifications.
  • conditional power saving when a UE receives a set of power saving parameters by UE-specific RRC signaling and further receives the PSI that indicates which condition for power saving to apply, the UE applies the set of power saving parameters if the condition for power saving fulfills, wherein multiple conditions for power saving may be configured by UE-specific RRC signaling or may be predefined in 3GPP specifications.
  • conditional power saving after a UE receives set (s) of power saving parameters and set (s) of conditions for power saving by UE-specific RRC signaling (wherein the mapping (s) of the set (s) of power saving parameters and the set (s) of conditions is also configured by UE-specific RRC signaling) , the UE selects one mapping as indicated in the PSI and applies the indicated set of power saving parameters if the indicated condition for power saving fulfills.
  • conditional power saving after a UE receives set (s) of power saving parameters and set (s) of conditions for power saving by UE-specific RRC signaling, the UE further receives a PSI that indicates the selected set of power saving parameters and the chosen condition, and applies the set of power saving parameters if the chosen condition fulfills.
  • the current invention proposes two alternatives as follows.
  • the PSI is applied to all activated CCs and the 5G NR network may configure the PSI in a conservative way.
  • the PSI is applied per CC.
  • CC #1 e.g., the primary cell or any activated cell
  • the UE checks whether the condition for power saving fulfills in all activated CCs, and if so, applies the set of power saving parameters in PCell and applies SCell dormancy in SCells simultaneously.
  • a UE when a UE receives a PSI in CC #1 (e.g., the primary cell or any activated cell) , the UE checks whether the condition for power saving fulfills in all activated CCs, and if so, applies the set of power saving parameters in both PCell and SCells simultaneously. Particularly, the UE may further apply SCell dormancy in SCells after a timer expires, wherein the timer may be configured by UE-specific RRC signaling. That is, when a UE does not receive DCI for data scheduling for a period of time after receiving the PSI, the UE switches SCell (s) to dormant Bandwidth Part (BWP) .
  • CC #1 e.g., the primary cell or any activated cell
  • the UE checks whether the condition for power saving fulfills in each cell independently, and applies the set of power saving parameters in PCell or SCell if the condition for power saving fulfills in the cell.
  • the UE checks whether the condition for power saving fulfills in each cell independently, and applies the set of power saving parameters in PCell or applies SCell dormancy in SCell if the condition for power saving fulfills in the cell.
  • the power saving gain in the fourth example of the first alternative may be larger since there is no dependency among cells, but more data interruptions may be introduced for SCell dormancy since SCells may not go to dormancy at the same time.
  • the UE checks whether the condition for power saving in the corresponding CC (i.e., CC #1) fulfills, and applies the set of power saving parameters in the PCell if CC #1 is the PCell and the condition fulfills in the cell, or applies SCell dormancy in the SCell if CC #1 is an SCell and the condition fulfills in the cell.
  • a UE when a UE receives a PSI in CC #1, the UE checks whether the condition for power saving fulfills in the corresponding CC (i.e., CC #1) , and applies the set of power saving parameters in CC #1 if the condition fulfills.
  • the current invention proposes an application delay for applying the set of power saving parameters. Specifically, if a UE receives a PSI indicating the UE to switch to a set of power saving parameters, the UE may apply the set of power saving parameters after the application delay X.
  • the application delay X may be that the condition for power saving fulfills.
  • the application delay X may be a value configured by UE-specific RRC signaling.
  • the application delay X max ⁇ the application delay for minimum applicable scheduling offset defined in Rel-16, the application delay for search space set switching defined in Rel-16 ⁇ .
  • the application delay X may be a timer value configured by UE-specific RRC signaling, wherein the timer is started upon receiving the PSI and the UE decreases the timer value by one after each slot.
  • the UE After applying the set of power saving parameters, the UE is allowed to switch back to use the set of parameters that are not for power saving in the DRX operation. In one example, the UE is allowed to switch back to use the set of parameters not for power saving, after a time window TPowSav which is configured by UE-specific RRC signaling. In one example, the UE is allowed to switch back to use the set of parameters not for power saving, in response to detecting a DCI comprising an indication of the UE not to use the set of adjusted power saving parameters in the DRX operation, and in response to an application delay Y subsequent to the detection of the DCI being passed.
  • TPowSav which is configured by UE-specific RRC signaling.
  • the UE is allowed to switch back to use the set of parameters not for power saving, in response to detecting a DCI comprising an indication of the UE not to use the set of adjusted power saving parameters in the DRX operation, and in response to an application delay Y subsequent to the detection of the
  • the UE is allowed to switch back to use the set of parameters not for power saving, in response to receiving DCI scheduling UE-specific data.
  • the adaptation on the set of power saving parameters is only applied in current active BWP, and the UE ignores the field in the DCI, which indicates BWP switching.
  • the UE may assume that the set of parameters not for power saving purpose is applied if there is no further DCI indication received after BWP switching.
  • FIG. 5 illustrates a flow chart of a method for efficient adaptation of UE power saving in accordance with one novel aspect of the current invention.
  • a UE performs a DRX operation.
  • the UE detects a DCI during the DRX operation, wherein the DCI comprises a first indication of an adaptation on one set of one or more power saving parameters.
  • the UE adjusts the set of the power saving parameters in the DRX operation according to the first indication.
  • the UE performs power saving in the DRX operation using the set of adjusted power saving parameters.
  • the PSI may also be used to indicate the UE to skip PDCCH monitoring in USS or skip PDCCH monitoring in both USS and Type 3 CSS, or may be used to indicate the UE to terminate the cDRX related timer (e.g., drx-inactivityTimer) , and the current invention cannot be limited thereto.
  • the cDRX related timer e.g., drx-inactivityTimer

Abstract

L'invention concerne un procédé d'adaptation efficace de l'économie d'énergie d'un équipement utilisateur (UE). Un UE effectue une opération de réception discontinue (DRX). L'UE détecte une information de commande de liaison descendante (DCI) spécifique à un UE pendant l'opération DRX, la DCI comprenant une première indication d'une adaptation sur un ensemble d'un ou de plusieurs paramètres d'économie d'énergie. L'UE ajuste l'ensemble des paramètres d'économie d'énergie dans l'opération DRX en fonction de la première indication. L'UE effectue une économie d'énergie dans l'opération DRX à l'aide de l'ensemble de paramètres d'économie d'énergie ajustés.
PCT/CN2021/101955 2020-06-24 2021-06-24 Adaptation efficace d'économie d'énergie d'ue dans une nouvelle radio (nr) 5g WO2021259343A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024071739A1 (fr) * 2022-09-28 2024-04-04 Samsung Electronics Co., Ltd. Procédé de communication et équipement électronique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150359035A1 (en) * 2013-01-16 2015-12-10 Lg Electronics Inc. Method for applying timer for discountinuous reception procedure in wireless communication system and an apparatus therefor
WO2016064048A1 (fr) * 2014-10-21 2016-04-28 Lg Electronics Inc. Procédé de surveillance d'un canal de commande de liaison descendante dans un système de communication sans fil et appareil associé
CN110536387A (zh) * 2019-08-15 2019-12-03 中兴通讯股份有限公司 一种数据传输方法、装置及计算机可读存储介质
CN111316716A (zh) * 2018-09-28 2020-06-19 联发科技股份有限公司 为ue功率节省触发适应机制

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150359035A1 (en) * 2013-01-16 2015-12-10 Lg Electronics Inc. Method for applying timer for discountinuous reception procedure in wireless communication system and an apparatus therefor
WO2016064048A1 (fr) * 2014-10-21 2016-04-28 Lg Electronics Inc. Procédé de surveillance d'un canal de commande de liaison descendante dans un système de communication sans fil et appareil associé
CN111316716A (zh) * 2018-09-28 2020-06-19 联发科技股份有限公司 为ue功率节省触发适应机制
CN110536387A (zh) * 2019-08-15 2019-12-03 中兴通讯股份有限公司 一种数据传输方法、装置及计算机可读存储介质

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CMCC: "Discussion on PDCCH-based power saving signal/channel design", 3GPP DRAFT; R1-1906524, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Reno, USA; 20190513 - 20190517, 13 May 2019 (2019-05-13), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051727974 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024071739A1 (fr) * 2022-09-28 2024-04-04 Samsung Electronics Co., Ltd. Procédé de communication et équipement électronique

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