IMPROVED DATA FORWARDING DURING HANDOVERS INVOLVING A RELAY NODE

摘要

The invention improves data forwarding during a handover of mobile nodes from a relay node to a target node. Forwarding data is transmitted to the corresponding base station using one or a small number of radio bearers, e.g. said data is assigned to one radio bearer only, thus achieving that said radio bearer transports only the forwarding data of the mobile node doing the handover. A second aspect defines a new header including an indication identifying the enclosed data as belonging to a mobile node doing handover and as data that is to be forwarded to the handover destination node. Additional information on the UE and the handover destination node are also added to the data in order for the base station to be able to forward said data towards its destination. For a third aspect the relay node requests the base station to assign more sub-frames to the uplink.