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    • 124. 发明公开
    • METHOD AND APPARATUS FOR PACKET RETRANSMISSION IN A MOBILE COMMUNICATION SYSTEM
    • VERFAHREN UND VORRICHTUNG ZUR PAKETNEUTRIBUNG在EINEM MOBILKOMMUNIKATIONSSYSTEM
    • EP2557725A4
    • 2017-08-23
    • EP11766093
    • 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:向基站发送上行链路分组; 当所述基站对所述上行分组进行解码失败时,接收所述基站发送的重传请求消息; 以及当接收到重传请求消息时,发起无线链路控制(RLC)重传。 根据本发明,以基于竞争的接入模式操作的终端在从基站接收HARQ NACK时启动RLC重传。 因此,可以立即执行RLC重传,而不必像在HARQ重传中那样等待HARQ RTT的期满,导致分组重传延迟的减少。
    • 125. 发明公开
    • METHOD AND APPARATUS FOR MEASURING SYSTEM SIGNAL
    • VERFAHREN UND VORRICHTUNG ZUR MESSUNG VON SYSTEMSIGNALEN
    • EP2663119A4
    • 2017-08-09
    • EP12732449
    • 2012-01-06
    • SAMSUNG ELECTRONICS CO LTD
    • JUNG JUNG SOOKIM SOENG HUNJEONG KYEONG INKIM SANG BUM
    • H04W24/02H04W24/10H04W36/30H04W52/02
    • H04W52/0225H04W24/10Y02D70/00Y02D70/122Y02D70/1262Y02D70/1264Y02D70/21Y02D70/24
    • The present invention relates to a method and apparatus for measuring a signal. According to one embodiment of the present invention, a signal measuring method may comprise the steps of: determining whether or not a current subframe corresponds to a measurement period; measuring a serving cell signal when the current subframe corresponds to the measurement period; determining whether a current measurement mode is a normal scan mode or a short scan mode in which a serving cell signal is more frequently measured than in the normal scan mode; determining whether or not the measured serving cell signal is less than a preset low signal threshold value when the current measurement mode is the normal scan mode; and changing the current measurement mode to the short scan mode when the measured serving cell signal is less than the low signal threshold value. According to one embodiment of the present invention, a system signal measuring method and apparatus which can quickly reflect the surrounding environment while efficiently using power is provided.
    • 测量信号的方法和设备 根据本发明的一个实施例,信号测量方法可以包括以下步骤:确定当前子帧是否对应于测量周期; 当当前子帧对应于测量周期时测量服务小区信号; 确定当前测量模式是正常扫描模式还是短于正常扫描模式中服务小区信号被更频繁地测量的短扫描模式; 当当前测量模式是正常扫描模式时,确定测量的服务小区信号是否小于预设的低信号阈值; 以及当所测量的服务小区信号小于所述低信号阈值时,将所述当前测量模式改变为所述短扫描模式。 根据本发明的一个实施例,提供了一种能够在有效使用电力的同时快速反映周围环境的系统信号测量方法和设备。