公开(公告)号：US20040248602A1

公开(公告)日：2004-12-09

申请号：US10772644

申请日：2004-02-05

Applicant: InterDigital Technology Corporation

Inventor： Alpaslan Demir ,  Donald M. Grieco ,  John W. Haim ,  Andrew F. Bednarz ,  Philip J. Pietraski ,  Louis J. Guccione ,  Prabhakar R. Chitrapu

IPC: H04B015/00

CPC classification number: H04B1/7083 ,  H04B1/70735 ,  H04B1/70755 ,  H04B1/709 ,  H04B2201/70701 ,  H04W48/16 ,  H04W56/00

Abstract: A method and system for performing initial cell search is disclosed. Step 1 processing is preformed to detect a peak primary synchronization code (PSC) location (i.e. chip offset or chip location). Step 2 processing is performed to obtain the toffset and code group. Step 3 processing is performed to identify the midamble of a base station with which the WTRU performing the initial cell search may synchronize with.

Abstract translation: 公开了一种用于执行初始小区搜索的方法和系统。 执行步骤1处理以检测峰值主同步码（PSC）位置（即码片偏移或码片位置）。 执行步骤2处理以获得折射和代码组。 执行步骤3处理以识别执行初始小区搜索的WTRU可与其同步的基站的中间码。

公开(公告)号：US20030031162A1

公开(公告)日：2003-02-13

申请号：US09998885

申请日：2001-10-31

Applicant: InterDigital Technology Corporation

Inventor： Prabhakar R. Chitrapu ,  Louis J. Guccione ,  Andrew F. Bednarz

IPC: H04J003/06

CPC classification number: H04B1/70735 ,  H04B1/7083

Abstract: The system and method of the present invention establishes a communication link between a user equipment (UE) and a base station 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 (SSC) within a system frame, 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 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.

Abstract translation: 本发明的系统和方法在具有多个基站的通信系统中建立用户设备（UE）和基站之间的通信链路，每个基站在主同步信道中发送公共主同步码（PSC） 与系统帧内的基站专用辅同步码（SSC）结合，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。