DETERMINING THE NEED FOR A ROUTING AREA UPDATE FOR PACKET SWITCHED HANDOVER IN MULTI-OPERATOR CORE NETWORK

摘要

A method implemented by a MS for controlling handover of the MS from a source cell of a source RAN operating in PS domain to a target cell of a target RAN operating in PS domain where the target RAN supports MOCN. The method includes receiving SI transmitted by a node of the source RAN. The SI includes a selected PLMN, LAC of the target cell, and RAC of the target cell. The MS executes handover to the target RAN. A target RAI is determined using the selected PLMN, LAC of the target cell, and RAC of the target cell from the SI transmitted by the node of the source RAN. The target RAI is compared to a registered RAI of the MS. The MS determines whether a RAU is needed in the target RAN based on the comparison of the target RAI to the registered RAI.