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    • 2. 发明公开
    • METHOD AND APPARATUS FOR PACKET RETRANSMISSION IN A MOBILE COMMUNICATION SYSTEM
    • VERFAHREN UND VORRICHTUNG ZURPAKETNEUÜBERTRAGUNGIN EINEM MOBILKOMMUNIKATIONSSYSTEM
    • EP2557725A2
    • 2013-02-13
    • EP11766093.6
    • 2011-04-04
    • Samsung Electronics Co., Ltd
    • KIM, Soeng HunLEE, Ok SeonJEONG, Kyeong In
    • H04L1/18
    • H04L1/1887H04L1/1864H04L1/1877
    • The present invention relates to a packet retransmission method of a terminal accessing a base station in contention-based access mode, and the method includes transmitting an uplink packet to the base station; receiving, when the base station fails decoding the uplink packet, a retransmission request message transmitted by the base station; and initiating, when the retransmission request message is received, a Radio Link Control (RLC) retransmission. According to the present invention, the terminal operating in contention-based access mode initiates RLC retransmission in reception of an HARQ NACK from the base station. Accordingly, it is possible to perform the RLC retransmission immediately without necessity of waiting for the expiry of HARQ RTT as in the HARQ retransmission, resulting in reduction of packet retransmission delay.
    • 本发明涉及一种在基于竞争的接入模式下接入基站的终端的分组重传方法,该方法包括向基站发送上行分组; 当所述基站对所述上行链路分组解码失败时,接收由所述基站发送的重发请求消息; 以及当接收到所述重传请求消息时发起无线电链路控制(RLC)重传。 根据本发明,在基于竞争的接入模式下工作的终端在基站接收HARQ NACK时发起RLC重发。 因此,可以如在HARQ重传中那样立即执行RLC重传而不必等待HARQ RTT的到期,导致分组重传延迟的减少。