IMPROVED RADIO BEARER MAPPING FOR PROXIMITY SERVICES UE TO NETWORK RELAY WITH ASSOCIATED PRIORITY SIGNALLING

摘要

The invention relates to a relay UE for relaying protocol data units between a remote UE and a radio base station. A control packet, preferably a PDCP control packet, is received by the relay UE from the remote UE via a first sidelink bearer, comprising a priority indication associated with protocol data units to be transmitted by the remote user equipment via the first sidelink bearer. The relay UE selects a radio bearer towards the eNB to relay the protocol data packets, and stores an association between the priority indication and the radio bearer. The relay UE determines, based on the stored association, the priority according to which a protocol data unit, received from the base station via the first radio bearer, should be transmitted to the remote UE, and relays the received protocol data unit to the remote user equipment using a second sidelink bearer that corresponds to the determined priority.