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    • 68. 发明申请
    • AN IMPROVED APPARATUS AND METHOD FOR PERFORMING INITIAL CELL SEARCH IN WIRELESS COMMUNICATION SYSTEMS
    • 在无线通信系统中执行初始小区搜索的改进设备和方法
    • WO2003001711A1
    • 2003-01-03
    • PCT/US2002/011669
    • 2002-04-15
    • INTERDIGITAL TECHNOLOGY CORPORATION
    • CHITRAPU, Prabhakar, R.GUCCIONE, Louis, J.BEDNARZ, Andrew, F.
    • H04J3/06
    • H04B1/70735H04B1/7083
    • The system and method of the present invention establishes a communication link (Fig. 3) between a user equipment (4) and a base station (2) in a communication system having a plurality of base stations which each transmit a common primary synchronization code (PSC) in a primary synchronization channel in conjunction with a base station specific secondary synchronization code within a system frame (Fig. 2), which receives with the UE an input signal including the PSC and SSC from at least one of the base stations. The UE analyzes the input signal to detect any received PSCs within a selected time period which has duration corresponding to the length of a system frame and determining a relative location of a strongest PSC (26) within the selected time period. The input signal is then processed to remove the PSC from at least the determined PSC location. A secondary synchronization code (SSC) is then detected for the determined location from the processed signal. The communication link is then established using the detected SSCs.
    • 本发明的系统和方法在具有多个基站的通信系统中在用户设备(4)和基站(2)之间建立通信链路(图3),每个基站发送公共主同步码( PSC)与主系统帧(图2)中的基站特定辅助同步码结合在主同步信道中,其从UE接收来自至少一个基站的包括PSC和SSC的输入信号。 UE分析输入信号以检测在所选择的时间段内的任何接收到的PSC,其具有对应于系统帧的长度的持续时间,并且确定所选择的时间段内最强PSC(26)的相对位置。 然后处理输入信号以从至少所确定的PSC位置移除PSC。 然后从处理的信号中检测出确定位置的次同步码(SSC)。 然后使用检测到的SSCs建立通信链路。