User equipment, network node, and base station

An Access and Mobility Management Function (AMF) in a first mobile network, comprising:

• a memory storing a program;
• and
• one or more processors configured to execute the program to:
• transmit, to a base station, a paging message to a user equipment which communicates with a plurality of mobile networks using a plurality of subscriber identity modules;
• receive, from the user equipment, a SERVICE REQUEST message including a first information element and a second information element, the first information element indicating that the user equipment does not accept to receive the paging message from the first mobile network, the second information element indicating that the paging message is not transmitted except for a voice service;
• and
• transmit, to the base station, the paging message only for the voice service in a case where the first information element and the second information element are received.

A base station comprising:

• a memory storing a program;
• and
• one or more processors configured to execute the program to:
• transmit a paging message to a user equipment which communicates with a plurality of mobile networks using a plurality of subscriber identity modules;
• receive in response to the paging message, a SERVICE REQUEST message including a first information element and a second information element, the first information element indicating that the user equipment does not accept to receive the paging message from a first mobile network, the second information element indicating that the paging message is not transmitted from the first mobile network except for a voice service;
• and
• transmit a non-access stratum (NAS) message to an Access and Mobility Management Function (AMF) in the first mobile network.