MOBILITY BETWEEN UMA ACCESS AND GPRS/UMTS ACCESS

摘要

One object of the present invention is a Proxy-Gn entity for mobility between UMA access and GPRS/UMTS access, said Proxy-Gn entity anchoring a PDP context for a Mobile Station MS whatever the access type UMA or GPRS/UMTS for this MS, said anchored PDP context having three terminations, two access terminations and one network termination: - GPRS/UMTS access termination, which receives GTP control messages from a SGSN, - UMA access termination, which receives Session Management requests from the MS, - Network termination, which is the termination towards a GGSN, and which owns the IP address allocated to the MS.