METHOD AND SYSTEM FOR CONTEXT TRANSFER ACROSS HETEROGENEOUS NETWORKS

摘要

A method and apparatus for triggering procedures to handover an ongoing communication session between a mobile station (MS) (10) and a correspondent node (CoN) (20) from via a first network (30) of a first type to via a second network (60) of a different type. Communication session continuity is maintained by transferring communication session context information when a handover is imminent from a network component (12) in a first network path (PATH 1) to a network component (14) in a second network path (PATH 2), and by forwarding downlink and uplink signals via the network components in both the first and second network paths until the ongoing communication session can be established via the second network path. The context information includes the session communication parameters, such that the second network path can allocate resources and establish routing between the MS (10) and the CoN (20).