METHOD AND APPARATUS FOR PREPARING CONNECTION TRANSFER BETWEEN AN IP BASED COMMUNICATION SYSTEM (LTE/SAE) AND A PDP CONTEXT BASED COMMUNICATION SYSTEM (UMTS/GPRS)

摘要

In a method and apparatus for providing system interoperability in wirelesscommunications an IP based client-server application maintains a proper setof PDP contexts while a mobile is connected via an IP based system such as LTE/SAE.The application client resides in the mobile and the server resides within thenetwork at a common anchor point (115) between the IP based system. (103) and aPDP context based system (111). The PDP contexts are kept up to date but on holduntil a handover occurs for the mobile from the IP based system (111).