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    • 6. 发明申请
    • METHOD AND APPARATUS FOR PACKET RETRANSMISSION IN A MOBILE COMMUNICATION SYSTEM
    • 移动通信系统中分组重传的方法和装置
    • WO2011126242A3
    • 2012-01-19
    • PCT/KR2011002304
    • 2011-04-04
    • SAMSUNG ELECTRONICS CO LTDKIM SOENG HUNLEE OK SEONJEONG KYEONG IN
    • KIM SOENG HUNLEE OK SEONJEONG KYEONG IN
    • H04L1/18
    • H04L1/1887H04L1/1864H04L1/1877
    • The present invention relates to a packet retransmission method for a terminal that accesses a base station through a contention-based access system, wherein the method comprises the following steps: transmitting an uplink packet to the base station; when the base station has failed to decode the uplink packet, receiving a retransmission request message transmitted by the base station; and initiating radio link control layer retransmission upon receipt of the retransmission request message. According to the present invention, the terminal, which uses a contention-based access system, initiates RLC retransmission upon receipt of HARQ NACK from the base station, and thus RLC retransmission can be immediately performed without having to wait for HARQ RTT, which otherwise might be needed in conventional HARQ retransmission systems, thereby preventing delays in HARQ retransmission.
    • 本发明涉及一种通过基于竞争的接入系统对基站进行接入的终端的分组重传方法,其特征在于,该方法包括以下步骤:向基站发送上行分组; 当所述基站未解码所述上行链路分组时,接收由所述基站发送的重传请求消息; 以及在接收到所述重传请求消息时发起无线电链路控制层重传。 根据本发明,使用基于竞争的接入系统的终端在从基站接收到HARQ NACK时发起RLC重传,因此可以立即执行RLC重传,而不必等待HARQ RTT,否则可能 在传统HARQ重传系统中需要,从而防止HARQ重传中的延迟。