Wireless device paging by a wireless network
A wireless device sends a first request to a mobility management function. The first request includes a paging cause value in a paging message. The paging message is received by the wireless device and comprises the paging cause value. Based on the paging message, a second request for a connection setup is sent.
1. A method comprising:
sending, by a wireless device to a mobility management function, a first request to include a paging cause value in a paging message;
receiving the paging message comprising the paging cause value; and
sending, based on the paging message, a second request for a connection setup.
2. The method of claim 1 , wherein the first request is a registration request message.
3. The method of claim 1 , wherein the second request is a radio resource control, RRC, setup message.
4. The method of claim 3 , wherein the RRC setup message is an RRC setup request message.
5. The method of claim 3 , wherein the RRC setup message is an RRC resume request message.
6. The method of claim 1 , wherein the sending the first request is based on the wireless device being a multi-subscriber identity module, SIM, device.
7. The method of claim 1 , wherein the paging cause value indicates that the paging message is for internet protocol multimedia subsystem, IMS, voice.
8. The method of claim 1 , wherein the mobility management function is one or more of:
a mobility management entity; and
an access and mobility management function.
9. The method of claim 1 , wherein the mobility management function is a mobility management function of a visited public land mobile network (PLMN).
10. The method of claim 9 , further comprising:
registering, by the wireless device, with a second PLMN;
wherein the first request is based on the visited PLMN being a lower priority PLMN than the second PLMN.
11. A wireless device comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
send, to a mobility management function, a first request to include a paging cause value in a paging message;
receive the paging message comprising the paging cause value; and
send, based on the paging message, a second request for a connection setup.
12. The method of claim 11 , wherein the first request is a registration request message.
13. The method of claim 11 , wherein the second request is a radio resource control, RRC, setup message.
14. The method of claim 13 , wherein the RRC setup message is an RRC setup request message.
15. The method of claim 13 , wherein the RRC setup message is an RRC resume request message.
16. The method of claim 11 , wherein the sending the first request is based on the wireless device being a multi-subscriber identity module, SIM, device.
17. The method of claim 11 , wherein the paging cause value indicates that the paging message is for internet protocol multimedia subsystem, IMS, voice.
18. The method of claim 11 , wherein the mobility management function is one or more of:
a mobility management entity; and
an access and mobility management function.
19. The method of claim 11 , further comprising:
registering, by the wireless device, with a second public land mobile network (PLMN);
wherein the first request is based on a visited PLMN being a lower priority PLMN than the second PLMN.
20. A system, comprising:
a wireless device comprising: one or more processors and memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
send, to a mobility management function, a first request to include a paging cause value in a paging message;
receive the paging message comprising the paging cause value; and
send, based on the paging message, a second request for a connection setup; and
the mobility management function, wherein the mobility management function comprises: one or more processors and memory storing instructions that, when executed by the one or more processors, cause the mobility management function to:
receive the first request; and
send the paging message.