Adjust paging occasion to resolve paging collision at a multi-SIM device

Patent metadata

Field	Value
Publication number	US-12389368-B2
Application number	US-201917755728-A
Country	US
Kind code	B2
Filing date	Nov 28, 2019
Priority date	Nov 28, 2019
Publication date	Aug 12, 2025
Grant date	Aug 12, 2025

Abstract

A user equipment (UE) includes a first subscriber identification module (SIM) and a second SIM. The UE is configured to establish a first cellular network connection based on, at least, the first SIM and a second cellular network connection based on, at least, the second SIM. The UE detects a collision between i) multiple paging occasions or ii) multiple paging frames. The UE then initiates a procedure for updating a paging occasion for the first cellular network connection. The UE monitors for a page over the first cellular network connection during the paging occasion.

First claim

What is claimed:

1. A method, comprising:
at a user equipment (UE) comprising a first subscriber identification module (SIM) and a second SIM, wherein the UE is configured to establish a first cellular network connection based on, at least, the first SIM and a second cellular network connection based on, at least, the second SIM:
detecting a collision between i) multiple paging occasions or ii) multiple paging frames;
selecting a narrowband (nB) parameter that is to be used by a network to determine a paging occasion for the first cellular network connection;
transmitting a routing area update (RAU) request to the network in response to detecting the collision, the RAU request indicating a value for the nB parameter; and
monitoring for a page over the first cellular network connection during the paging occasion.

2. The method of claim 1 , wherein the nB parameter is also to be used by the network to determine a paging frame for the first cellular network connection.

3. The method of claim 1 , further comprising:
receiving an accept message from the network in response to the RAU request.

4. The method of claim 1 , further comprising:
receiving a page from a currently camped cell over the first cellular network connection, wherein the currently camped cell transmits the page to the UE during the paging occasion.

5. The method of claim 1 , wherein detecting the collision is based on receiving an indication from a non-access stratum (NAS) layer.

6. The method of claim 1 , wherein a paging frame is determined based on SFN mode T=(T div N)*(UE_ID mode N) where SFN represents a system frame number, T represents a UE discontinuous reception (DRX) cycle parameter, UE_ID represents an international mobile subscriber identifier (IMSI) of the UE and N represents min (T, nB) where a value for the nB parameter is selected from one of multiple predetermined values.

7. The method of claim 6 , wherein the value for the nB parameter is selected as one of 4T, 2T, T, T/2, T/4, T/8, T/16, T/32, T/64, T/128, T/256, T/512 or T/1024.

8. A user equipment (UE), comprising:
a first subscriber identification module (SIM);
a second SIM;
a transceiver configured to establish a first cellular network connection based on, at least, the first SIM and a second cellular network connection based on, at least, the second SIM; and
a processor configured to perform operations, the operations comprising:
detecting a collision between i) multiple paging occasions or ii) multiple paging frames;
selecting a narrowband (nB) parameter that is to be used by a network to determine a paging occasion for the first cellular network connection;
transmitting a routing area update (RAU) request to the network in response to detecting the collision, the RAU request indicating a value for the nB parameter; and
monitoring for a page over the first cellular network connection during the paging occasion.

9. The UE of claim 8 , wherein the nB parameter is also to be used by the network to determine a paging frame for the first cellular network connection.

10. The UE of claim 8 , the operations further comprising:
receiving an accept message from the network in response to the RAU request.

11. The UE of claim 8 , wherein detecting the collision is based on receiving an indication from a non-access stratum (NAS) layer.

12. The UE of claim 8 , wherein the operations further comprise:
receiving a page from a currently camped cell over the first cellular network connection, wherein the currently camped cell transmits the page to the UE during the paging occasion.

13. The UE of claim 8 , wherein a paging frame is determined based on SFN mode T=(T div N)*(UE_ID mode N) where SFN represents a system frame number, T represents a UE discontinuous reception (DRX) cycle parameter, UE_ID represents an international mobile subscriber identifier (IMSI) of the UE and N represents min (T, nB) where a value for the nB parameter is selected from one of multiple predetermined values.

14. The UE of claim 13 , wherein the value for the nB parameter is selected as one of 4T, 2T, T, T/2, T/4, T/8, T/16, T/32, T/64, T/128, T/256, T/512 or T/1024.

Assignees

• Apple Inc

Inventors

• Gao Jishan
• Zhang Lijie
• Hu Haijing
• Wang Zhiwei
• Miao Qiang

Classifications

• H04W74/0825

  with collision detection · CPC title

• H04W68/005 Primary

  Transmission of information for alerting of incoming communication · CPC title

• H04W60/005

  Multiple registrations, e.g. multihoming · CPC title

• H04W76/15

  Setup of multiple wireless link connections · CPC title

• H04W8/183

  Processing at user equipment or user record carrier · CPC title