Apparatus, system, method, and computer-readable medium for cellular system enhancements for the support of multi-sim user equipments

A wireless transmit/receive unit (WTRU) configured to receive a first subscriber identity module (SIM) associated with a first network and a second SIM associated with a second network, the WTRU comprising:

• a transceiver, memory, and a processor which are configured to:
• send a first request, to the first network, to register the WTRU, wherein the first request includes information indicating that the WTRU is a multi-SIM device, the first request comprises a subscriber identifier that is associated with the first network, and the first request comprises a multi-SIM policy, wherein the multi-SIM policy informs the first network of capabilities of the WTRU for multi-SIM operations,
• receive a paging message from the first network, wherein the paging message includes information indicating the paging message is associated with voice service, and
• send a second request, to the first network, in response to the paging message, wherein the second request includes an indication of paging rejection and paging restriction criteria.

A method implemented by a wireless transmit/receive unit (WTRU) configured to receive a first subscriber identity module (SIM) associated with a first network and a second SIM associated with a second network, the method comprising:

• sending a first request, to the first network, to register the WTRU, wherein the first request includes information indicating that the WTRU is a multi-SIM device, the first request comprises a subscriber identifier that is associated with the first network, and the first request comprises a multi-SIM policy, wherein the multi-SIM policy informs the first network of capabilities of the WTRU for multi-SIM operations;
• receiving a paging message from the first network, wherein the paging message includes information indicating the paging message is associated with voice service;
• and
• sending a second request, to the first network, in response to the paging message, wherein the second request includes an indication of paging rejection and paging restriction criteria.