Paging enhancements for UE power savings
Methods, systems, and devices may assist in performing group-based paging, such as downlink control information-based group paging, paging radio network temporary identifier-based group paging, wakeup signal-based group paging, or sweep-based group paging. Also, method, systems, and devices may assist in performing beam-based paging or configuring cross-slot scheduling for paging.
1 . A wireless transmit/receive unit (WTRU) comprising: a processor; and memory coupled with the processor, the memory comprising executable instructions stored thereon that when executed by the processor cause the processor to effectuate operations comprising:
transmit assistance information to a core network device using non-access stratum (NAS) signaling;
receive, from the core network device, a NAS message that comprises a paging group identifier for a paging group to which the WTRU belongs;
transition into one or more states comprising a radio resource control (RRC) idle state or an RRC inactive state;
receive, from a base station, a wake-up signal (WUS) that comprises the paging group identifier, when the WTRU is in the one or more states that comprise the RRC idle state or the RRC inactive state;
based on receiving the paging group identifier in the WUS, determine to monitor a subsequent paging occasion (PO) and monitor the subsequent PO based on the determination;
based on the monitoring, receive a paging message carried on a physical downlink shared channel (PDSCH), the paging message including one or more paging records; and
respond to the paging message based on a determination that an identifier of the WTRU matches a paging record among the one or more paging records.
2 . The WTRU of claim 1 , wherein the core network device comprises an access and mobility management function (AMF).
3 . The WTRU of claim 1 , wherein the paging group identifier is determined by the core network.
4 . The WTRU of claim 1 , further configured to: receive a first paging group identifier for use in an RRC idle state and a second paging group identifier for use in an RRC inactive state.
5 . The WTRU of claim 1 , wherein the paging group identifier is determined based on one or more of: a WTRU type, a release of the WTRU, or a power consumption profile of the WTRU.
6 . The WTRU of claim 1 , wherein the paging group identifier is determined based on one or more of: a battery level of the WTRU, a traffic profile, or a mobility state of the WTRU.
7 . A method comprising:
transmitting assistance information using non-access stratum (NAS) signaling;
receiving a NAS message that comprises a paging group identifier for a paging group to which a wireless transmit receive unit (WTRU) belongs;
transitioning into one or more states comprising a radio resource control (RRC) idle state or an RRC inactive state;
receiving a wake-up signal (WUS) that comprises the paging group identifier, when the WTRU is in the one or more states that comprise the RRC idle state or the RRC inactive state;
based on receiving the paging group identifier in the WUS, determining to monitor a subsequent paging occasion (PO) and monitoring the subsequent PO based on the determination;
based on the monitoring, receiving a paging message carried on a physical downlink shared channel (PDSCH), the paging message including one or more paging records; and
responding to the paging message based on a determination that an identifier of the WTRU matches a paging record among the one or more paging records.
8 . The method of claim 7 , wherein the NAS message that comprises the paging group identifier is from a core network device.
9 . The method of claim 8 , wherein the paging group identifier is determined by the core network.
10 . The method of claim 7 , further comprising: receiving a first paging group identifier for use in an RRC idle state and a second paging group identifier for use in an RRC inactive state.
11 . The method of claim 7 , wherein the paging group identifier is determined based on a WTRU type.
12 . The method of claim 7 , wherein the paging group identifier is determined based on one or more of: a battery level of the WTRU or a mobility state of the WTRU.
13 . The method of claim 7 , wherein the paging group identifier is determined based on one or more of: a release of the WTRU or a power consumption profile of the WTRU.
14 . The method of claim 7 , wherein the paging group identifier is determined based on a traffic profile.
15 . A system comprising:
one or more processors; and
one or more memory coupled with the processor, the one or more memory comprising executable instructions stored thereon that when executed by the one or more processors cause the one or more processors to effectuate operations comprising:
receive assistance information at a core network device using non-access stratum (NAS) signaling;
in response to receiving of the assistance information, transmit, from the core network device, an NAS message that comprises a paging group identifier for a paging group to which a wireless transmit/receive unit (WTRU) belongs, wherein the WTRU transitions into one or more states comprising a radio resource control (RRC) idle state or an RRC inactive state;
receive, at the WTRU, a wake-up signal (WUS) from a base station that comprises the paging group identifier, when the WTRU is in the one or more states that comprise the RRC idle state or the RRC inactive state;
based on receiving the paging group identifier in the WUS, determine at the WTRU to monitor a subsequent paging occasion (PO) and monitor the subsequent PO based on the determination;
based on the monitoring, receive, at the WTRU, a paging message carried on a physical downlink shared channel (PDSCH), the paging message including one or more paging records; and
respond, by the WTU, to the paging message based on a determination that an identifier of the WTRU matches a paging record among the one or more paging records.
16 . The system of claim 15 , wherein the core network device comprises an access and mobility management function (AMF).
17 . The system of claim 15 , wherein the paging group identifier is determined by the core network.
18 . The system of claim 15 , wherein the paging group identifier is determined based on a battery level of the WTRU.