Patent ID: 8023469
Filing Date: 2011-09-20
Classification: H04W

Abstract:
1. A Radio Network Controller, RNC, for assisting a handover of a data session from a first routing path, associated with a first access network and a first data port of said RNC, to an alternative routing path, associated with an alternative access network and a second data port of said RNC, said RNC being arranged to route data of said session over said first access network via said first data port, to a User Terminal, UT, by binding a session identifier identifying said data session to a first routing identifier, wherein said session identifier and said first routing identifier are defined in accordance with a standard protocol routing scheme of said first access network; said RNC comprising processing means being further arranged to carry out the following steps: receiving a capability message uniquely identifying said UT according to a standard protocol routing scheme of said first access network and according to an alternative protocol routing scheme of said alternative access network, said capability message indicating that said UT is capable of establishing a data session through said alternative access network, creating an alternative routing identifier for said session complying with the alternative protocol routing scheme of said alternative access network and associating said alternative routing identifier with said UT and said second port, associating at least said session identifier with said alternative routing identifier, and receiving from the UT, for the purpose of a handover decision by the RNC, either a measurement report, said measurements are performed by a Multi Radio Resource Management, MRRM, application provided in the UT, or radio resource management parameter received by the UT from an AP of the alternative radio access network; or receiving from the UT a handover decision taken by the MRRM application provided in the UT on the basis of radio resource management parameters received from an AP of the alternative radio access network, and/or MRRM parameters measured by the UT.