METHOD AND ARRANGEMENT IN A MULTI-ACCESS COMMUNICATION NETWORK

摘要

The present invention relates to a method and arrangement for making a handover decision in a multi-access communication network comprising a core network (30) and at least one user terminal network (10) communicating with said core network (30) on at least two access paths (a, b) via at least two access networks (20a, 20b), whereby data sessions are routed on at least a first access path (a) via a first access network (20a) and a second access path (b) via a second access network (20b). A first set of criteria is determined by an Access Network control Function (ANF) (25a, 25b) for when a handover between said at least two access paths (a, b) should be performed and a report is sent to an Access Selection Function (ASF) (34) when at least one criterion of said first set of criteria is fulfilled. A second set of criteria is determined by a Connection Management Function (CMF) (14) for when a handover between said at least two access paths (a, b) should be performed and a report is sent to the ASF (34) when at least one criterion of said second set of criteria is fulfilled. The ASF (34) determines one or more data sessions of said at least one user terminal network (10) to be handed over based on the sent reports and directs a core network anchor (32) and a terminal anchor (12) to execute a handover by re-routing said determined data sessions from one access path (a, b) to an alternative access path (a, b).