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    • 2. 发明授权
    • Apparatus and method for synchronization of uplink synchronous transmission scheme in a CDMA communication system
    • CDMA通信系统中上行同步传输方案的同步装置及方法
    • US07120132B2
    • 2006-10-10
    • US09888914
    • 2001-06-25
    • Sung-Ho ChoiYong-Jun KwakKook-Heui LeeHyun-Woo LeeSeong-Ill ParkHo-Kyu Choi
    • Sung-Ho ChoiYong-Jun KwakKook-Heui LeeHyun-Woo LeeSeong-Ill ParkHo-Kyu Choi
    • H04B7/216H04J3/06
    • H04W56/0005H04B1/707H04B1/7075
    • Disclosed is a method for synchronizing a scrambling code in a CDMA communication system including a UTRAN (UMTS Terrestrial Radio Access Network) and a plurality of user equipments (UEs), using orthogonal codes for identifying the UEs and a single scrambling code for identifying the UTRAN by the UEs, and employing an uplink synchronous transmission scheme (USTS) where the UEs synchronize frames of uplink dedicated physical channels (DPCHs) using the single scrambling code. The UEs receive a reference signal including reference time information provided from the UTRAN and transmit a random access channel (RACH) based on the reference time. The UTRAN receives the random access channels from the UEs to measure a propagation delay time (PD) of each random access channel signal from the UEs, and transmits a transmission time adjustment value calculated using the measured propagation delay time and a time offset τDPCH,n between a transmission time point of the reference signal and a transmission time point of a downlink DPCH. Each UE determines a transmission time of the uplink DPCH by receiving the transmission time adjustment value, and scrambles a message with the orthogonal code and a scrambling code generated at the reference time, at the transmission time so determined as to transmit the message over the uplink DPCH.
    • 公开了一种使用包括UTRAN(UMTS陆地无线电接入网)和多个用户设备(UE)的CDMA通信系统中的扰码进行同步的方法,使用用于识别UE的正交码和用于识别UTRAN的单个扰码 并且使用上行链路同步传输方案(USTS),其中UE使用单个扰码来同步上行链路专用物理信道(DPCH)的帧。 UE接收包括从UTRAN提供的参考时间信息的参考信号,并且基于参考时间发送随机接入信道(RACH)。 UTRAN从UE接收随机接入信道以测量来自UE的每个随机接入信道信号的传播延迟时间(PD),并且发送使用测量的传播延迟时间和时间偏移τ DPCH,n参考信号的传输时间点与下行链路DPCH的传输时间点之间。 每个UE通过接收传输时间调整值来确定上行链路DPCH的传输时间,并且在传输时刻在正确码和在参考时间产生的扰码进行加扰,从而确定为通过上行链路发送消息 DPCH。
    • 9. 发明授权
    • Apparatus and method for gating data on a control channel in a CDMA communication system
    • 用于在CDMA通信系统中的控制信道上门控数据的装置和方法
    • US07006482B1
    • 2006-02-28
    • US09677342
    • 2000-10-02
    • Ho-Kyu ChoiChang-Soo ParkSung-Oh HwangHyun-Woo LeeJae-Min AhnYoun-Sun KimHi-Chan MoonSeong-ill Park
    • Ho-Kyu ChoiChang-Soo ParkSung-Oh HwangHyun-Woo LeeJae-Min AhnYoun-Sun KimHi-Chan MoonSeong-ill Park
    • H04B7/216
    • H04W52/56H04B2201/70709H04J13/00H04W52/16H04W52/44H04W52/58
    • A method for transmitting control data on a downlink and/or uplink channel in a base station and/or mobile station in a mobile communication system. In one embodiment, the base station determines whether there is downlink channel data to transmit to a mobile station. If there is no data to be transmitted over the downlink channel for a predetermined time period, the base station drives a random gating position selector to determine a random gating slot position, gates on the control data at the determined slot position, and gates off the control data at other slot positions. The random position selector determines the gating slot position by calculating a value x by multiplying a system frame number (SFN) of a received signal by a specific integer; selecting n bits starting from a position which is at an x-chip distance from the start point of a scrambling code, which has a period equal to one frame, before a plurality of gating durations used in generating a downlink signal; and determining a gating slot position of a corresponding gating slot group by performing a modulo operation on the selected n bits, where the module operation is by the number of slots in a gating slot group.
    • 一种用于在移动通信系统中的基站和/或移动台中的下行链路和/或上行链路信道上发送控制数据的方法。 在一个实施例中,基站确定是否存在要向移动台发送的下行链路信道数据。 如果在预定时间段内没有要通过下行链路信道发送的数据,则基站驱动随机门控位置选择器以确定随机门控时隙位置,在所确定的时隙位置对控制数据进行门控,并关闭 在其他插槽位置控制数据。 随机位置选择器通过将接收信号的系统帧号(SFN)乘以特定整数来计算值x来确定选通时隙位置; 在用于生成下行链路信号的多个选通持续时间之前,从具有周期等于一帧的扰码开始点处的x码片距离的位置开始选择n个比特; 以及通过对所选择的n位执行模运算来确定对应的门控时隙组的门控时隙位置,其中模块操作是通过门控时隙组中的时隙数量。