METHOD AND SYSTEM FOR HANDOVER TO WLAN NETWORK FROM LTE NETWORK

摘要

PURPOSE: A system for performing handover between an LTE(Long Term Evolution) network and a WLAN(Wireless Local Area Network) is provided to perform signaling between a 3GPP(3rd Generation Partnership Project) network and other network. CONSTITUTION: A CSCF(Call Session Control Function)(145) of an IMS network(103) renews the location registration about a user terminal by using new bearer information. The CSCF attempts a session setup by using the new bearer information. An AS(Application Server)(155) stores the new bearer information by the session setup attempt using the new bearer information. The AS establishes the session renewal with the connected other terminal.