Patent ID: 8204449

Claim:
A signaling method for transmitting scheduling information for scheduling by a user equipment, UE in communication with a serving Node B and at least one non-serving Node B in a mobile communication system supporting an uplink packet data service, wherein the scheduling information for scheduling is contained in a MAC-e packet data unit, PDU, the method comprising the steps of: generating the MAC-e PDU containing the scheduling information for scheduling; transmitting the MAC-e PDU to the serving Node B and the at least one non-serving Node B; and performing an Hybrid Automatic Retransmission Request, HARQ, operation for retransmitting the MAC-e PDU containing the scheduling information until an acknowledge, ACK, signal for the MAC-e PDU is received from the serving Node B with regardless of receiving an ACK signal from the at least one non-serving Node B, wherein the scheduling information for scheduling is transmitted without transmission packet data.