US Patent 11889471 Paging time adjustment in a wireless network

A core network node of a first public land mobile network (PLMN) receives, from a wireless device, a requested international mobile subscriber identity (IMSI) offset value for offsetting an IMSI of the wireless device. The core network node transmits, to the wireless device, an accepted IMSI offset value for offsetting the IMSI of the wireless device. First paging occasions of the first PLMN are derived using an alternative IMSI. The alternative IMSI is determined based on a sum of the IMSI of the wireless device and the accepted IMSI offset value.