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