WO2022205355A1 - Procédé et appareil de radiomessagerie - Google Patents

Procédé et appareil de radiomessagerie Download PDF

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Publication number
WO2022205355A1
WO2022205355A1 PCT/CN2021/085059 CN2021085059W WO2022205355A1 WO 2022205355 A1 WO2022205355 A1 WO 2022205355A1 CN 2021085059 W CN2021085059 W CN 2021085059W WO 2022205355 A1 WO2022205355 A1 WO 2022205355A1
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WIPO (PCT)
Prior art keywords
paging
grouping
information
power saving
network
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PCT/CN2021/085059
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English (en)
Inventor
Jie Shi
Lianhai WU
Jing HAN
Haiming Wang
Ran YUE
Min Xu
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Lenovo (Beijing) Limited
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Priority to PCT/CN2021/085059 priority Critical patent/WO2022205355A1/fr
Publication of WO2022205355A1 publication Critical patent/WO2022205355A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • H04W68/025—Indirect paging
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08—User group management
    • 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
    • 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
    • H04W52/0238—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is an unwanted signal, e.g. interference or idle signal
    • 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

  • Embodiments of the present application generally relate to wireless communication technology, and more specifically relates to enhancing paging technology to save user equipment (UE) power.
  • UE user equipment
  • New radio is generally a set of enhancements to the long term evolution (LTE) mobile standard promulgated by the 3rd generation partnership project (3GPP) .
  • 3GPP 3rd generation partnership project
  • Rel-17 RP-193264 and RP-192673 respectively specify objectives for UE power saving by reducing unnecessary UE paging receptions and enhancing paging indication etc.
  • One objective of the embodiments of the present application is to provide a solution for paging, so that unnecessary paging reception can be reduced.
  • a method may include: receiving, in a UE, paging grouping information from a network; and in the case that a paging grouping mechanism is enabled for the UE, detecting group_ID indication information carried in at least one of paging physical downlink control channel (PDCCH) , and paging early indication (PEI) ; or in the case that the paging grouping mechanism is disabled for the UE, not detecting the group_ID indication information carried in the at least one of the paging PDCCH and the PEI.
  • PDCCH physical downlink control channel
  • PEI paging early indication
  • the method may further include: transmitting UE power saving assistant information to the network, wherein the UE power saving assistant information indicates a status of the UE to be one of: false paging alarm information, correct paging alarm information, paging grouping being requested, paging grouping not being requested, or UE power saving profile.
  • the UE power saving assistant information includes at least one of the following UE assistant information: a request on whether to perform the paging grouping detection or not; a request on whether to perform the paging grouping detection in dedicated cell (s) or not; a cause value of indication on whether frequently receiving the false paging alarm or correct paging alarm or not; a cause value of a rate or number of receiving the false paging alarm or correct paging alarm in at least one of a time range and dedicated cell (s) ; a cause value of a rate or number of not receiving the false paging alarm or correct paging alarm in at least one of a time range and dedicated cell (s) ; and indication on a level of the false paging alarm or correct paging alarm.
  • the UE power saving profile includes at least one of the following: whether the UE is to report UE assistant information or not; at least one of UE grouping rule information and assistant information for UE grouping rule; and whether the UE to perform a paging grouping mechanism or not.
  • the UE grouping rule information comprises UE suggested grouping rule information, which is at least one of: a) UE-ID based grouping; b) PP based grouping; c) UE power consumption sensitive grouping; d) UE inactive /Idle mode based grouping; e) network determined group ID method; and a combination of two or more of a) -e) .
  • the assistant information for UE grouping rule comprises at least one of level information of the UE power consumption sensitive grouping and suggested group ID configured by the network.
  • whether the paging grouping mechanism is enabled or disabled for the UE is predefined or configured by the network.
  • the UE power saving assistant information is transmitted by one of the following: a non-access stratum (NAS) message in a small data transmission (SDT) procedure or in a UE-connected mode; and a radio resource control (RRC) message or medium access control (MAC) control element (CE) in the SDT procedure or in the UE-connected mode.
  • NAS non-access stratum
  • RRC radio resource control
  • MAC medium access control
  • the method may include: receiving a response message from a base station, wherein the response message indicates at least one of whether the paging grouping mechanism is enabled or disabled for the UE and a UE power saving profile of the UE.
  • the method may include: defining or updating a UE power saving profile, wherein the power saving profile defines one of the following: whether the UE is to report UE assistant information or not; at least one of UE grouping rule information and assistant information for UE grouping rule; and whether the UE to perform a paging grouping mechanism or not.
  • whether the UE power saving assistant information is transmitted or not depends on an associated timer expiring or associated trigger event (s) .
  • the associated timer or associated trigger event (s) may be predefined or configured by the network.
  • a paging group ID of the UE is determined based on one of the following:
  • wg the group ID of the UE
  • N number of total paging frames in T
  • N s number of paging occasions for a paging frame
  • Ng the number of the groups in a group set
  • UE_ID 5G-S-temporary mobile subscription identifier (TMSI) mod 1024, or 5G-S-TMSI mod (1024*x) , wherein the number x is configured by the network.
  • TMSI 5G-S-temporary mobile subscription identifier
  • 5G-S-TMSI mod (1024*x) wherein the number x is configured by the network.
  • the group set is defined based on grouping rule of the UE and grouping information configured in the network.
  • a method may include: transmitting, in a base station, paging grouping information to a UE; and transmitting, in the base station, at least one of paging PDCCH and PEI, wherein the at least one PDCCH and PEI carries group_ID indication information of a set of UE for which a paging grouping mechanism is enabled.
  • the method may include: receiving UE power saving assistant information of the UE from the UE or a neighbor base station, wherein the UE power saving assistant information indicates a status of the UE to be one of: false paging alarm information, correct paging alarm information, paging grouping being requested, paging grouping not being requested, or UE power saving profile.
  • the method may include: transmitting the UE power saving assistant information to a function entity of a core network.
  • the method may include: configuring the paging grouping mechanism is enabled or disabled for the UE.
  • the UE power saving assistant information is received by one of the following: a NAS message in a SDT procedure or in a UE-connected mode; and a RRC message or MAC CE in the SDT procedure or in the UE-connected mode.
  • the method may include: configuring the paging grouping mechanism is enabled or disabled for the UE; and transmitting a response message indicating that the paging grouping mechanism is enabled or disabled for the UE.
  • the method may include: receiving, from the function entity, configuration information indicating that the paging grouping mechanism is enabled or disabled for the UE; and transmitting the configuration information to the UE.
  • the method may include: defining or updating a UE power saving profile for the UE; and transmitting a response message indicating the UE power saving profile. In some embodiments of the present application, the method may include: receiving a UE power saving profile for the UE from the function entity; and transmitting a response message indicating the UE power saving profile to the UE.
  • a method may include: receiving, in a function entity of a core network from a base station, UE power saving assistant information of a UE; and transmitting, in the function entity to the base station at least one response message, wherein the at least one response message indicates at least one of whether the paging grouping mechanism is enabled or disabled for the UE and a UE power saving profile of the UE.
  • the response message is based on UE power saving assistant information or other information in some embodiments of the present application.
  • the apparatus includes at least one non-transitory computer-readable medium having stored thereon computer-executable instructions; at least one receiving circuitry; at least one transmitting circuitry; and at least one processor coupled to the at least one non-transitory computer-readable medium, the at least one receiving circuitry and the at least one transmitting circuitry.
  • the computer-executable instructions cause the at least one processor to implement any method according to an embodiment of the present application with the at least one receiving circuitry and the at least one transmitting circuitry.
  • Embodiments of the present application can improve the legacy paging mechanism and efficiently reduce unnecessary paging receptions. Accordingly, embodiments of the present application will facilitate the deployment and implementation of NR.
  • FIG. 1 illustrates a schematic diagram of an exemplary wireless communication system according to some embodiments of the present disclosure
  • FIG. 2 is a flow chart illustrating a method for paging according to some embodiments of the present application
  • FIG. 3 illustrates a flow chart of a method for paging according to some other embodiments of the present application
  • FIG. 4 illustrates a flow chart of a method for paging in an exemplary Attach procedure according to some embodiments of the present application
  • FIG. 5 illustrates a flow chart of a method for paging in an exemplary TAU procedure according to some embodiments of the present application.
  • FIG. 6 illustrates a block diagram of an apparatus for paging according to some embodiments of the present application.
  • FIG. 1 illustrates a schematic diagram of an exemplary wireless communication system 100 according to some embodiments of the present disclosure.
  • the wireless communication system 100 can include at least one base station (BS) 101 and at least one UE 103.
  • BS base station
  • UE 103 the wireless communication system 100 can include at least one base station (BS) 101 and at least one UE 103.
  • BSs 101 and UEs 103 e.g., only one BS 101 and one UE 103, are depicted in FIG. 1, one skilled in the art will recognize that any number of BSs 101 and UEs 103 may be included in the wireless communication system 100.
  • the BS 101 may be distributed over a geographic region, and generally be a part of a radio access network that may include one or more controllers communicably coupled to one or more corresponding BSs 101.
  • each BS 101 may also be referred to as an access point, an access terminal, a base, a macro cell, a Node-B, an evolved Node B (eNB) , a gNB, a Home Node-B, a relay node, a device, or described using other terminology used in the art.
  • the UE 103 may be a computing device, such as a desktop computer, a laptop computer, a personal digital assistant (PDA) , a tablet computer, a smart television (e.g., a television connected to the Internet) , a set-top box, a game console, a security system (including a security camera) , a vehicle on-board computer, a network device (e.g., a router, a switch, or a modem) , or the like.
  • a computing device such as a desktop computer, a laptop computer, a personal digital assistant (PDA) , a tablet computer, a smart television (e.g., a television connected to the Internet) , a set-top box, a game console, a security system (including a security camera) , a vehicle on-board computer, a network device (e.g., a router, a switch, or a modem) , or the like.
  • PDA personal digital assistant
  • a tablet computer such
  • the UE 103 may be a portable wireless communication device, a smart phone, a cellular telephone, a flip phone, a device having a subscriber identity module, a personal computer, a selective call receiver, or any other device that is capable of sending and receiving communication signals on a wireless network.
  • the UE 103 may be a RedCap UE.
  • the UE 103 may also be referred to as a subscriber unit, a mobile, a mobile station, a user, a terminal, a mobile terminal, a wireless terminal, a fixed terminal, a subscriber station, a user terminal, or a device, or described using other terminology used in the art.
  • a wake up signal (WUS) mechanism is introduced for power saving in LTE Rel-15, wherein a WUS indicates whether there is a paging process in a pre-defined paging occasion (PO) .
  • WUS wake up signal
  • PO pre-defined paging occasion
  • the UE monitors the following possible paging messages in POs in response to the UE detecting a WUS, so that physical downlink control channel (PDCCH) blind detection can be performed.
  • PDCCH physical downlink control channel
  • the WUS mechanism when the WUS mechanism is enabled, the UE will not monitor the following paging messages in POs in response to the UE not detecting any WUS.
  • NB-IoT narrow band internet of things
  • eMTC enhanced machine-type communication
  • paging early indication (PEI) or paging PDCCH or downlink control information (DCI) in PDCCH could be used to indicate the paging group ID information.
  • a UE will be allocated to different paging groups based on the paging group ID computed by a UE-ID based grouping rule or UE-paging-probability based grouping rule etc.
  • the UE will not decode the physical downlink shared channel (PDSCH) indicated in the paging PDCCH to check the record identity (ID) list for paging in the PDSCH when there is no its own ID in the record ID list, so that its power is saved.
  • PEI in RAN1#104e, the following are agreed:
  • ⁇ PEI indicates UE should monitor a PO if UE’s group/subgroup is paged
  • ⁇ UE is not required to monitor a PO if UE does not detect PEI at all PEI occasion (s) for the PO
  • ⁇ PEI indicates whether or not UE should monitor a PO
  • ⁇ UE is required to monitor a PO if UE does not detect PEI at all PEI occasion (s) for the PO.
  • Paging extension frequently happens in NR where a UE is not stationary or not in low mobility, e.g., in NB-IoT.
  • the indication of associated UE group ID is transmitted in an enlarged area due to the paging extension.
  • lots of UEs in the same paging group and in an enlarged number of cells have to decode unnecessary paging messages.
  • the UE needs to report UE power saving assistant information to the network side to enable to disable the paging grouping mechanism.
  • the UE power saving assistant information is related to paging strategy (s) by the network side, e.g., a core network (CN) or a base station, e.g., an anchor gNB
  • the network side e.g., a core network (CN) or a base station, e.g., an anchor gNB
  • embodiments of the present application also propose a solution on how to handle the UE power saving assistant information.
  • UE paging grouping methods e.g., a UE-ID based grouping (or grouping rule, or method etc., hereafter the same) , a paging probability (PP) based grouping, a power sensitive mode (PSM) grouping, UE idle/inactive mode grouping method etc.
  • PP paging probability
  • PSM power sensitive mode
  • UE idle/inactive mode grouping method etc.
  • Some other embodiments of the present application propose a solution for determining the paging group ID of UE in view of various paging rules, which can also solve the above problem caused by paging extension.
  • FIG. 2 is a flow chart illustrating a method for paging according to some embodiments of the present application. Although the method is illustrated in a system level by a UE in a remote side (or UE side) and a BS in a network side (or BS side) , persons skilled in the art can understand that the method implemented in the remote side and that implemented in the network side can be separately implemented and incorporated by other apparatus with the like functions.
  • paging grouping information may be configured by a BS.
  • the paging grouping information may include various information associated with paging grouping, e.g., paging probability information for paging grouping, and DCI bit information for paging grouping etc.
  • the paging grouping information is transmitted, e.g., by the BS to the UE.
  • the paging grouping information may be received in the UE side.
  • step 203 in the network side, at least one of paging PDCCH and PEI will be transmitted, e.g., by the BS to the UE, wherein the at least one paging PDCCH and PEI carries group_ID indication information of a set of UE for which a paging grouping mechanism is enabled.
  • the group_ID indication information After receiving the at least one of paging PDCCH and PEI, whether the UE decodes (or detect, or monitor, or the like) the group_ID indication information or not depends on whether the paging grouping mechanism is enabled or disabled for the UE.
  • the UE will detect the group_ID indication information carried in at least one of the paging PDCCH and PEI in step 204. Otherwise, in the case that the paging grouping mechanism is disabled for the UE, the UE will not detect the group_ID indication information carried in the at least one of the paging PDCCH and the PEI in step 204. Accordingly, the UE for which the paging grouping mechanism is disabled will not perform unnecessary paging reception, and thus its power will be saved.
  • whether the paging grouping mechanism is enabled or disabled for a UE is predefined or configured by the network, e.g., a BS, or a function entity of the core network (CN) .
  • the function entity of CN may be an access and mobility management function (AMF) or mobility management entity (MME) .
  • AMF access and mobility management function
  • MME mobility management entity
  • a UE may be predefined to have or not have the ability to support paging grouping mechanism.
  • the network can configure whether the paging grouping mechanism is enabled or disabled for a UE based on the UE power saving assistant information reported by the UE or the paging group ID of the UE.
  • the UE power saving assistant information will explicitly or implicitly indicate a status of the UE to be one of: false paging alarm information, correct paging alarm information, paging grouping being requested, paging grouping not being requested, or UE power saving profile.
  • the UE power saving assistant information may explicitly report that the UE is in a status of paging grouping being requested, that is, the UE requests the network to enable the paging grouping mechanism for the UE.
  • the UE power saving assistant information may implicitly indicate a status of the UE being paging grouping not being requested by indicating a high level of false paging alarm. That is, the UE implicitly requests the network to disable the paging grouping mechanism for the UE.
  • the UE power assistant information may include at least one item of the following UE assistant information to be reported to the network:
  • a request on whether to perform the paging grouping detection or not e.g., request to perform or not perform a PEI detection ;
  • a request on whether to perform the paging grouping detection in dedicated cell (s) or not e.g., request to perform or not to perform a PEI detection in dedicated cell (s) , the information of the dedicated cell (s) will also be reported in some embodiments of the present application
  • a cause value of indication on whether frequently receiving the false paging alarm or correct paging alarm or not e.g., a cause value of indication on frequently receiving the false paging alarm or correct paging alarm, or a cause value of indication on not frequently receiving the false paging alarm or correct paging alarm
  • f indication on a level of the false paging alarm or correct paging alarm (how to define the level (s) can be achieved in various manner, e.g., a high level, a middle level and a low level defined based on multiple thresholds configured by the network) .
  • the UE power saving profile it defines (or includes) at least one of the following: whether the UE is to report the UE assistant information, such as at least one item of UE assistant information a) -f) , at least one of UE grouping rule information and assistant information for UE grouping rule, and whether the UE to perform a paging grouping mechanism or not (e.g., to perform a paging grouping mechanism or not to perform a paging grouping mechanism) .
  • the UE grouping rule information may include UE suggested grouping rule information, which is at least one of: UE-ID based grouping, PP based grouping, UE power consumption sensitive grouping, UE inactive/Idle mode based grouping, network determined group ID method, and a combination of grouping rules, e.g., a combination of two or more of the above rules.
  • UE-ID based grouping it is to further group the UEs monitoring the same PO into different subgroups based on the UE ID.
  • UEs mapped to a PO of a paging frame can be further grouped into ‘P’ paging groups where ‘P’ can be signaled by a base station , e.g., a gNB in system information (e.g. as a part of paging configuration) .
  • the PP based grouping it is to further group the UEs monitoring the same PO into different subgroups based on the paging probability.
  • UE power consumption sensitive (PCS) grouping also referred to as "UE power consumption profile based grouping”
  • PCS UE power consumption sensitive
  • the RRC_IDLE UEs are subgrouped separately from the RRC_INACTIVE UE.
  • Unnecessary radio access network (RAN) paging reception by the RRC_IDLE UEs can be avoided if UEs can know in advance that the paging message includes only RAN paging (i.e. the paging message does not include any CN paging) .
  • the information indicating the presence of only RAN paging or the absence of CN paging in the paging message can be indicated in DCI and/or short message. Such a manner has no impact to legacy UEs because reserved bit in DCI or short message is used for RAN paging indication.
  • WUS and/or PEI which is being discussed in RAN1
  • RAN paging or the absence of CN paging in the paging message can also be indicated in WUS and/or PEI, which also has no impact to legacy UEs because WUS and/or PEI are not handled by legacy UEs.
  • combination orders are: network determined group ID method, or UE inactive/Idle mode based grouping, UE power consumption sensitive grouping, PP based grouping, UE-ID based grouping; or UE inactive /Idle mode based grouping, PP based grouping, UE power consumption sensitive grouping, UE-ID based grouping, or PP based grouping, UE power consumption sensitive grouping, UE-ID based grouping, or UE power consumption sensitive grouping, PP based grouping, UE-ID based grouping, or UE power consumption sensitive grouping, UE-ID based grouping, or UE power consumption sensitive grouping, UE-ID based grouping, or PP based grouping, UE-ID based grouping, or UE inactive/Idle mode based grouping, UE-ID based grouping.
  • assistant information for UE grouping rule it is any assistant information for a UE grouping rule, for example, including at least one of the level information of the UE power consumption sensitive grouping and suggested group ID configured by the network.
  • the level information may be high and low; high, middle and low; or indicated by bits information etc.
  • the information in a function entity of a core network will be transmitted to UE via the base station.
  • the information in UE will be transmitted to the function entity of a core network via the base station.
  • the UE power saving profile can be defined by the UE itself. In some other embodiments of the present application, the UE power saving profile can be defined by the network side, e.g., the BS or a function entity of the CN, and the UE can receive its UE power saving profile from the network and update the previous one if any.
  • the network side e.g., the BS or a function entity of the CN
  • the UE may report the UE power saving assistant information by one of the following: an NAS message in an SDT procedure or in a UE-connected mode, and a RRC message or MAC CE in the SDT procedure or in the UE-connected mode.
  • the UE may report the UE power saving assistant information by an NAS message, or a RRC message or MAC CE in an Attach procedure or TAU procedure for an SDT procedure or a UE-connected mode.
  • the UE may report the UE power saving assistant information in response to an associated timer expiring or associated trigger event (s) .
  • the UE may not report the UE power saving assistant information in response to an associated timer expiring or associated trigger event (s) . That is, whether to report the UE power saving assistant information or not depends on associated timer (s) or trigger event (s) .
  • the associated timer or associated trigger event (s) is predefined or configured by the network side, e.g., the BS.
  • the network side may determine or adjust one or more paging strategies (or mechanisms) for the UE on its own initiative or based on the received UE power saving assistant information.
  • the network side may configure the paging grouping mechanism is enabled or disabled for the UE on its own initiative or based on the received UE power saving assistant information.
  • the network side may define or update the UE power saving profile of the UE on its own initiative or based on the received UE power saving assistant information.
  • the network side may configure the paging grouping mechanism is enabled or disabled for the UE, and define or update the UE power saving profile of the UE on its own initiative or based on the received UE power saving assistant information.
  • the network side may transmit a response message (or referred to as "configuration message” etc., hereafter the same) to the UE to indicate the one or more paging strategies, e.g., indicating at least one of whether the paging grouping mechanism is enabled or disabled for the UE and the UE power saving profile of the UE.
  • a response message or referred to as "configuration message” etc., hereafter the same
  • whether the paging grouping mechanism is enabled or disabled for the UE is configured by the BS based on the UE power saving assistant information. Then, the BS will transmit a response message to the UE via a paging message or a dedicated signaling, indicating that the paging grouping mechanism is enabled or disabled for the UE. For example, in the case that the UE power saving assistant information indicates that the UE has a high level of false paging alarm, the BS will disable the paging grouping mechanism for the UE. That means: the PEI and/or WUS etc. paging associated indication will not be triggered by the paging message associated with the high level of false paging alarm.
  • This UE will not decode or monitor (or detect) the PEI and/or WUS etc. based on the response message from the network.
  • the BS will enable the paging grouping mechanism for the UE. That means: the PEI and/or WUS etc. paging associated indication will be triggered by the paging message associated with the low level of false paging alarm or a high level of correct false paging alarm of the UE.
  • This UE will decode or monitor the PEI and/or WUS etc. based on the response message from the BS.
  • the PEI and/or WUS may be replaced by at least one of the PDCCH (or DCI) of paging message, PEI, and WUS.
  • the BS may define or update the UE power saving profile based on the UE power saving assistant information. Then, the BS will transmit a response message to the UE indicating the UE power saving profile. For example, in the case of UE being inactive or RNA paging, the UE may report at least part of the UE power saving assistant information to the BS by at least one of RRC message and MAC CE in a SDT procedure or in UE-connected mode, such as in an Attach procedure or TAU procedure. The BS will identify the received information, and define or update the UE power saving profile.
  • the UE power saving profile may define whether the UE needs to report the UE assistant information, e.g., all or part of UE assistant information a) -f) in some embodiments of the present application.
  • the UE power saving profile may define at least one of UE grouping rule information and the assistant information for the grouping rule.
  • the power saving profile will define whether the UE performs the paging grouping mechanism or not. Then, the BS will transfer the information associated with the power saving profile to the UE.
  • the anchor BS may receive the UE power saving assistant information from a neighbor BS for the UE. After configuring whether the paging grouping mechanism is enabled or disabled for the UE, the anchor BS may transmit the configuration information (or response message) to the neighbor BS. The neighbor BS will transmit the configuration information to the UE.
  • the UE power saving profile can be defined or updated in a similar manner in the case that the BS is an anchor BS for the UE.
  • the CN e.g., the AMF or MME in the CN may determine or adjust one or more paging strategies (or mechanisms) for the UE. For example, at least one of whether the paging grouping mechanism is enabled or disabled for the UE and the UE power saving profile for the UE is configured by the AMF based on the UE power saving assistant information.
  • FIG. 3 illustrates a flow chart of a method for paging according to some other embodiments of the present application.
  • a function entity of the CN e.g., an AMF
  • a BS a function entity of the CN
  • the method respectively performed in the function entity and in the BS can be performed in other corresponding network elements or function entities with similar functions in other embodiments of the present application, and can be integrated with other adaptive methods in some other embodiments of the present application.
  • part or all of the procedures respectively performed in the CN and BS may be different from the illustrated.
  • the BS may receive UE power saving assistant information of a UE from the UE, e.g., by a NAS message, or a RRC message or MAC CE in a SDT procedure or in a UE-connected mode.
  • the UE power saving assistant information indicates a status of the UE to be one of: false paging alarm information, correct paging alarm information, paging grouping being requested, paging grouping not being requested, or UE power saving profile.
  • the BS may transmit the received UE power saving assistant information to the CN, e.g., the AMF or MME e.g., by a NAS message, or a RRC message or MAC CE in a SDT procedure or in a UE-connected mode.
  • the CN e.g., the AMF or MME e.g., by a NAS message, or a RRC message or MAC CE in a SDT procedure or in a UE-connected mode.
  • the CN e.g., the AMF or MME of the CN may receive the UE power saving assistant information of the UE transmitted from the BS in step 305.
  • the CN e.g., the AMF or MME may transmit at least one response message, wherein the at least one response message indicates at least one of whether the paging grouping mechanism is enabled or disabled for the UE and the UE power saving profile of the UE.
  • the response message may be based on UE power saving assistant information or other information.
  • whether the paging grouping mechanism is enabled or disabled for the UE is configured by the CN based on the UE power saving assistant information.
  • the CN will transmit a response message (or referred to as "configuration message” etc., hereafter the same) to the BS via a paging message or the like, indicating that the paging grouping mechanism is enabled or disabled for the UE.
  • the BS will transfer the response message to the UE via a paging message or a dedicated signaling.
  • the CN will disable the paging grouping mechanism for the UE. That means: the PEI and/or WUS etc.
  • the CN will enable the paging grouping mechanism for the UE. That means: the PEI and/or WUS etc. paging associated indication will be triggered by the paging message associated with the low level of false paging alarm or a high level of correct false paging alarm. This UE will decode or monitor the PEI and/or WUS etc. based on the response message transferred from the BS.
  • the CN may define or update the UE power saving profile based on the UE power saving assistant information.
  • the CN will transmit a response message to the BS indicating the UE power saving profile.
  • the UE may report at least part of the UE power saving assistant information to the BS by at least one of RRC message and MAC CE in a SDT procedure or in a UE connected mode, such as an Attach procedure or TAU procedure.
  • the BS will identify the received information and report to the CN, e.g., the AMF.
  • the CN will define or update the UE power saving profile.
  • the UE power saving profile may define whether the UE needs to report the UE assistant information, e.g., all or part of UE assistant information a) -f) in some embodiments of the present application.
  • the UE power saving profile may define at least one of UE grouping rule information and the assistant information for the grouping rule.
  • the UE power saving profile will define whether the UE performs the paging grouping mechanism or not.
  • the CN will transmit the information of UE power saving profile to the BS, and the BS will transfer the information associated with the power saving profile to the UE.
  • FIG. 4 illustrates a flow chart of a method for paging in an exemplary Attach procedure according to some embodiments of the present application.
  • a UE transmits an Attach request message to the BS in step 401, and the BS transmits the Attach Request message to the CN, e.g., the AMF of the CN in step 403.
  • the Attach Request message may include the UE power saving assistant information.
  • the AMF may transmit an Identification Request message to the old AMF (not shown) , and the old AMF will respond with an Identification Response message, so that the AMF can obtain legacy UE information.
  • the CN transmits an Initial Context Setup Request message or Downlink NAS Transport with Attach Accept message to the BS in step 405, and the BS transmits a RRC Connection Reconfiguration message or RRC Direct Transfer message to the UE in step 407.
  • the response message or configuration information indicating whether the paging grouping mechanism is enabled or disabled for the UE can be included in the Initial Context Setup Request message or Downlink NAS Transport with Attach Accept message.
  • the response message or configuration information indicating UE power saving profile for the UE can also be included in the Initial Context Setup Request message or Downlink NAS Transport with Attach Accept message.
  • the BS indicates at least one of whether the paging grouping mechanism is enabled or disabled for the UE and the UE power saving profile of the UE in the RRC Connection Reconfiguration message or RRC Direct Transfer message.
  • FIG. 5 illustrates a flow chart of a method for paging in an exemplary TAU procedure according to some embodiments of the present application.
  • the UE transmits a TAU Request message to the BS in step 501, and the BS transmits the TAU request message to the CN, e.g., the MME of the CN in step 503.
  • the TAU Request message may include the UE power saving assistant information.
  • the MME may transmit a Context Request message to the old MME, and the old MME will responds with a Context Response message, so that the MME can obtain legacy UE information.
  • the CN transmits the Paging Group ID message, e.g., a Group ID for WUS to the BS in step 505, and transmits a TAU Accept message to the UE in step 507.
  • the UE may transmit a TAU Complete message to the MME in step 509.
  • the response message or configuration information indicating whether the paging grouping mechanism is enabled or disabled for the UE can be included in the Paging Group ID message to the BS.
  • the response message or configuration information indicating UE power saving profile for the UE can also be included in the Paging Group ID message.
  • the BS will transfer the response message or configuration information to the UE.
  • the BS will indicate to the UE at least one of whether the paging grouping mechanism is enabled or disabled for the UE and the UE power saving profile of the UE, e.g., by paging message (s) or dedicated signaling.
  • Some embodiments of the present application also propose a solution for determining a UE paging group ID, which can also be used to determine whether a paging grouping mechanism is enabled or disabled for the UE.
  • a solution for determining a UE paging group ID can also make UEs randomly distributed in the paging group (s) defined by WUS or PEI in a paging cycle "T" .
  • a paging group ID of a UE is determined based on one of the following:
  • wg the group ID of the UE
  • N number of total paging frames in T
  • N s number of paging occasions for a paging frame
  • N g the number of the groups in a group set, wherein N g is computed based on the network configuration on the DCI for PEI and/or the WUS sequences, and the UE grouping rule, and/or N g is used for a sub-grouping method to which the UE-ID based grouping will be applied;
  • UE_ID 5G-S-temporary mobile subscription identifier (TMSI) mod 1024, or 5G-S-TMSI mod (1024*x) , wherein the number x is configured by the network.
  • TMSI 5G-S-temporary mobile subscription identifier
  • 5G-S-TMSI mod (1024*x) wherein the number x is configured by the network.
  • the group set it is defined based on the grouping rule of the UE and grouping information configured in the network, which may be the WUS sequence information and paging DCI information.
  • the group set can be selected based on the UE paging group ID.
  • the UE will apply PSM grouping and UE-ID based grouping.
  • the network will configure (1, Nw) UE groups by WUS sequence (e.g., channel state information (CSI) -reference signal (RS) , demodulation reference signal (DMRS) , primary synchronization signal (PSS) , secondary synchronization signal (SSS) ) , and (Nw+1, M) UE group by DCI (the DCI will indicate whether the related group is to be detected or not) .
  • WUS sequence e.g., channel state information (CSI) -reference signal (RS) , demodulation reference signal (DMRS) , primary synchronization signal (PSS) , secondary synchronization signal (SSS)
  • DCI will indicate whether the related group is to be detected or not
  • the network will define UE group ID (1, X) for PSM UE (s) , (X+1, M) UE groups for non-PSM UE.
  • the UE-ID based grouping
  • the UE paging group ID may be:
  • the UE paging group ID may be:
  • the PP based and UE-ID based grouping may be further applied.
  • the PP higher than 0.5 will share the first half of the paging group, and the PP lower than 0.5 will share the other half of the UE group.
  • the UE paging group ID may be:
  • FIG. 6 illustrates a block diagram of an apparatus 600 for paging according to some embodiments of the present application.
  • the apparatus 600 may include at least one non-transitory computer-readable medium 601, at least one receiving circuitry 602, at least one transmitting circuitry 604, and at least one processor 606 coupled to the non-transitory computer-readable medium 601, the receiving circuitry 602 and the transmitting circuitry 604.
  • the apparatus 600 may be a CN apparatus (e.g. an AMF or MME) configured to perform a method illustrated in FIG. 3 and the like, a network side apparatus (e.g., a BS) configured to perform a method illustrated in FIGS. 2-3 and the like, or a remote unit (e.g., a UE) configured to perform a method illustrated in FIG. 2 or the like.
  • CN apparatus e.g. an AMF or MME
  • a network side apparatus e.g., a BS
  • a remote unit e.g., a UE
  • the at least one processor 606, transmitting circuitry 604, and receiving circuitry 602 are described in the singular, the plural is contemplated unless a limitation to the singular is explicitly stated.
  • the receiving circuitry 602 and the transmitting circuitry 604 can be combined into a single device, such as a transceiver.
  • the apparatus 600 may further include an input device, a memory, and/or other components.
  • the non-transitory computer-readable medium 601 may have stored thereon computer-executable instructions to cause a processor to implement the method with respect to the UE as described above.
  • the computer-executable instructions when executed, cause the processor 606 interacting with receiving circuitry 602 and transmitting circuitry 604, so as to perform the steps with respect to the UE depicted in FIG. 2.
  • the non-transitory computer-readable medium 601 may have stored thereon computer-executable instructions to cause a processor to implement the method with respect to the BS as described above.
  • the computer-executable instructions when executed, cause the processor 606 interacting with receiving circuitry 602 and transmitting circuitry 604, so as to perform the steps with respect to the BS depicted in FIGS. 2 and 3.
  • the non-transitory computer-readable medium 601 may have stored thereon computer-executable instructions to cause a processor to implement the method with respect to the function entity of the CN as described above.
  • the computer-executable instructions when executed, cause the processor 606 interacting with receiving circuitry 602 and transmitting circuitry 604, so as to perform the steps with respect to the CN depicted in FIG. 3.
  • the method according to embodiments of the present application can also be implemented on a programmed processor.
  • the controllers, flowcharts, and modules may also be implemented on a general purpose or special purpose computer, a programmed microprocessor or microcontroller and peripheral integrated circuit elements, an integrated circuit, a hardware electronic or logic circuit such as a discrete element circuit, a programmable logic device, or the like.
  • any device on which resides a finite state machine capable of implementing the flowcharts shown in the figures may be used to implement the processor functions of this application.
  • an embodiment of the present application provides an apparatus including a processor and a memory. Computer programmable instructions for implementing a method stored in the memory, and the processor is configured to perform the computer programmable instructions to implement the method.
  • the method may be a method as stated above or other method according to an embodiment of the present application.
  • An alternative embodiment preferably implements the methods according to embodiments of the present application in a non-transitory, computer-readable storage medium storing computer programmable instructions.
  • the instructions are preferably executed by computer-executable components preferably integrated with a network security system.
  • the non-transitory, computer-readable storage medium may be stored on any suitable computer readable media such as RAMs, ROMs, flash memory, EEPROMs, optical storage devices (CD or DVD) , hard drives, floppy drives, or any suitable device.
  • the computer-executable component is preferably a processor but the instructions may alternatively or additionally be executed by any suitable dedicated hardware device.
  • an embodiment of the present application provides a non-transitory, computer-readable storage medium having computer programmable instructions stored therein.
  • the computer programmable instructions are configured to implement a method as stated above or other method according to an embodiment of the present application.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Divers modes de réalisation de la présente demande concernent un procédé et un appareil de radiomessagerie. Un procédé donné à titre d'exemple consiste : à recevoir, dans un UE, des informations de groupement de radiomessagerie provenant d'un réseau ; et dans le cas où un mécanisme de regroupement de radiomessagerie est activé pour l'UE, à détecter des informations d'indication d'identifiant de groupe comprises dans au moins un canal de commande de liaison descendante physique de radiomessagerie (PDCCH), et une indication précoce de radiomessagerie (PEI) ; ou dans le cas où le mécanisme de regroupement de radiomessagerie est désactivé pour l'UE, ne détecte pas les informations d'indication d'identifiant de groupe transportées dans le PDCCH de radiomessagerie et/ou le PEI.
PCT/CN2021/085059 2021-04-01 2021-04-01 Procédé et appareil de radiomessagerie WO2022205355A1 (fr)

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CN103458505A (zh) * 2012-05-29 2013-12-18 中兴通讯股份有限公司 一种节电模式下控制信令发送的方法和系统
CN108574938A (zh) * 2017-03-13 2018-09-25 中国移动通信有限公司研究院 一种寻呼方法及装置
WO2020165384A1 (fr) * 2019-02-14 2020-08-20 Telefonaktiebolaget Lm Ericsson (Publ) Dispositif de communication sans fil, nœud de réseau d'accès radio, procédés et programmes informatiques pour l'intensification de radiomessagerie économe en énergie

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CN103458505A (zh) * 2012-05-29 2013-12-18 中兴通讯股份有限公司 一种节电模式下控制信令发送的方法和系统
CN108574938A (zh) * 2017-03-13 2018-09-25 中国移动通信有限公司研究院 一种寻呼方法及装置
WO2020165384A1 (fr) * 2019-02-14 2020-08-20 Telefonaktiebolaget Lm Ericsson (Publ) Dispositif de communication sans fil, nœud de réseau d'accès radio, procédés et programmes informatiques pour l'intensification de radiomessagerie économe en énergie

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