maintaining a first negotiated Paging Early Indication with Paging Subgrouping (PEIPS) assistance information by a User Equipment (UE), wherein the UE is registered to a first network via a first access and registered to a second network via a second access;

using the first negotiated PEIPS assistance information to determine a first New Radio (NR) paging subgroup of the UE;

receiving a CONFIGURATION UPDATE COMMAND message from the second access that carries a second updated PEIPS assistance information; and

using the first negotiated PEIPS assistance information to determine the first NR paging subgroup of the UE when the first network and the second network are different networks, otherwise, using the second updated PEIPS assistance information to determine a second NR paging subgroup of the UE when the first network and the second network are a same network.