Patent ID: 8347164
Filing Date: 2013-01-01
Classification: H04L

Abstract:
1. A method for transmitting data by using hybrid automatic repeat request (HARQ), the method comprising: allocating a radio resource for a non-acknowledgment (NACK) channel to a plurality of user equipments (UEs) having the same identifier (ID) in an uplink (UL) resource region, the NACK channel being used to receive a NACK signal for multi-user data of a plurality of UEs, and the NACK channel being allocated to the plurality of UEs based on the same resource region in the UL resource region; transmitting the multi-user data comprising the same connection identifier (CID) to the plurality of UEs; receiving the NACK signal only from at least one UE among the plurality of UEs on the NACK channel when the at least one UE detects an error from the multi-user data; and retransmitting the multi-user data to the plurality of UEs if receiving the NACK signal from the at least one UE.