Patent ID: 8019346

Claim:
A method for assisting handover of a user terminal's, UT's, communication session in an integrated multi RAT network, said method to be carried out by an RNC 1 being installed in said network and which RNC 1 is being arranged to route said session through a first radio access network path via a first port according to a first radio network routing protocol by binding a session identifier identifying said session to a radio bearer defined according to said first routing protocol, said RNC 1 being further arranged to route said session through an alternative radio access network path via a second port by binding said session identifier to an alternative bearer identifier being defined according to an alternative access network protocol, said method comprising the following steps: receiving a “Handover Candidate” message comprising a message type identifier information element identifying said message as being a “Handover Candidate” message and which message identifies said session and which message further identifies a candidate RNC of said network, wherein said candidate RNC constitutes an RNC handover candidate for said session, establishing the identity of said RNC by investigating said message, associating said communication session with said candidate RNC identified in the previous step.