Fallback mode for wake-up signal receivers

Patent metadata

Field	Value
Publication number	US-2019150114-A1
Application number	US-201816182376-A
Country	US
Kind code	A1
Filing date	Nov 6, 2018
Priority date	Nov 13, 2017
Publication date	May 16, 2019
Grant date	—

Abstract

Methods, systems, and devices for wireless communications are described. A wireless device, such as a user equipment (UE), may receive a configuration of a page monitoring periodicity, and a configuration of a wake-up signal from a network node, such as a base station. The UE may perform discontinuous monitoring for a plurality of wake-up signals based at least in part on a wake-up signal periodicity, and receive the wake-up signal on the wake-up signal periodicity. The UE may then monitor for paging messages to receive paging information, or updates to system information, during a page monitoring period according to the page monitoring periodicity, the wake-up signal periodicity, the received wake-up signal, or a combination thereof.

First claim

What is claimed is:

1 . A method for wireless communication at a user equipment (UE), comprising:
receiving a configuration of a page monitoring periodicity; receiving a configuration of a wake-up signal; performing discontinuous monitoring for a plurality of wake-up signals based at least in part on a wake-up signal periodicity; and monitoring for a paging message during a page monitoring period according to the page monitoring periodicity, or the wake-up signal periodicity, or a received wake-up signal, or a combination thereof.

2 . The method of claim 1 , further comprising:
receiving the wake-up signal based at least in part on the wake-up signal periodicity.

3 . The method of claim 1 , further comprising:
determining that the page monitoring periodicity comprises one or more paging occasions (POs) based on the configuration, wherein the wake-up signal periodicity corresponds to the one or more POs; and monitoring for the paging message according to a PO periodicity or the received wake-up signal, or a combination thereof.

4 . The method of claim 1 , further comprising:
determining that the page monitoring periodicity comprises one or more wake-up signal occasions based at least in part on the configuration, wherein the wake-up signal periodicity corresponds to a paging time window (PTW) periodicity that includes one or more paging occasions (POs); and monitoring for the paging message according to the PTW periodicity or the received wake-up signal, or a combination thereof.

5 . The method of claim 1 , further comprising:
determining that the page monitoring periodicity comprises one or more wake-up signal occasions based at least in part on the configuration, wherein the wake-up signal periodicity corresponds to one or more paging occasions (POs); and monitoring for the paging message according to the one or more POs or the received wake-up signal, or a combination thereof.

6 . The method of claim 1 , further comprising:
determining that the page monitoring periodicity comprises one or more radio resource management (RRM) measurement periods based at least in part on the configuration; and monitoring for the paging message according to an RRM measurement periodicity.

7 . The method of claim 1 , further comprising:
determining that the page monitoring periodicity comprises one or more broadcast control channel (BCCH) modification periods based at least in part on the configuration; and monitoring, according to a BCCH modification period, for the paging message, or a system information block, or a master information block (MIB), or a combination thereof.

8 . The method of claim 1 , wherein receiving the configuration of the page monitoring periodicity comprises:
receiving the configuration of the page monitoring periodicity via a system information message, or a radio resource control (RRC) message, or a non-access stratum (NAS) message, or a combination thereof.

9 . The method of claim 1 , further comprising:
identifying the configuration of the page monitoring periodicity based at least in part on a time period during which the wake-up signal has been skipped at least once.

10 . The method of claim 1 , further comprising:
identifying the configuration of the page monitoring periodicity based at least in part on a relationship between the page monitoring periodicity and one or more other parameters.

11 . The method of claim 1 , further comprising:
detecting the paging message during the page monitoring period based at least in part on the monitoring, wherein the paging message is detected based at least in part on the received wake-up signal.

12 . The method of claim 1 , further comprising:
performing a handover to a target cell; and monitoring for one or more paging messages from the target cell according to a page monitoring periodicity for the target cell, or a wake-up signal periodicity for the target cell, or a received wake-up signal from the target cell, or a combination thereof.

13 . The method of claim 1 , further comprising:
identifying a system information change notification based at least in part on a detected paging message.

14 . A method for wireless communication at a base station, comprising:
determining a page monitoring periodicity for configuring a user equipment (UE) to monitor for a paging message; determining a wake-up signal periodicity for a plurality of wake-up signals, the wake-up signal periodicity being less than or equal to the page monitoring periodicity; and transmitting a configuration of the page monitoring periodicity to the UE, wherein the configuration indicates a relationship between the page monitoring periodicity and the wake-up signal periodicity.

15 . The method of claim 14 , further comprising:
transmitting, within the configuration, an indication that the page monitoring periodicity comprises one or more paging occasions (POs), wherein the wake-up signal periodicity corresponds to the one or more POs.

16 . The method of claim 14 , further comprising:
transmitting, within the configuration, an indication that the page monitoring periodicity comprises one or more wake-up signal occasions, wherein the wake-up signal periodicity corresponds to a paging time window (PTW) periodicity that includes one or more paging occasions (POs).

17 . The method of claim 14 , further comprising:
transmitting, within the configuration, an indication that the page monitoring periodicity comprises one or more wake-up signal occasions based at least in part on the configuration, wherein the wake-up signal periodicity corresponds to one or more paging occasions (POs).

18 . The method of claim 14 , further comprising:
transmitting, within the configuration, an indication that the page monitoring periodicity comprises one or more radio resource management (RRM) measurement periods.

19 . The method of claim 14 , further comprising:
transmitting, within the configuration, an indication that the page monitoring periodicity comprises one or more broadcast control channel (BCCH) modification periods.

20 . The method of claim 14 , wherein transmitting the configuration of the page monitoring periodicity comprises:
transmitting the configuration of the page monitoring periodicity via a system information message, or a radio resource control (RRC) message, or a non-access stratum (NAS) message, or a combination thereof.

21 . The method of claim 14 , further comprising:
transmitting a system information change notification within the paging message.

22 . An apparatus for wireless communication, comprising:
a receiver configured to receive a configuration of a page monitoring periodicity and receive a configuration of a wake-up signal; a processor; memory in electronic communication with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to:
perform discontinuous monitoring for a plurality of wake-up signals based at least in part on a wake-up signal periodicity; and
monitor for a paging message during a page monitoring period according to the page monitoring periodicity, or the wake-up signal periodicity, or a received wake-up signal, or a combination thereof.

23 . The apparatus of claim 22 , wherein the receiver is configured to:
receive the wake-up signal based at least in part on the wake-up signal periodicity.

24 . The apparatus of claim 22 , w

Assignees

• Qualcomm Inc

Inventors

• Liu Le
• Rico Alvarino Alberto
• Dhanda Mungal Singh
• Phuyal Umesh

Classifications

• H04W76/28

  Discontinuous transmission [DTX]; Discontinuous reception [DRX] · CPC title

• H04W68/025 Primary

  Indirect paging · CPC title

• H04W76/27

  Transitions between radio resource control [RRC] states · CPC title

• H04W52/0248

  dependent on the time of the day, e.g. according to expected transmission activity · CPC title

• H04W52/0216

  using a pre-established activity schedule, e.g. traffic indication frame · CPC title