公开(公告)号：US20020097698A1

公开(公告)日：2002-07-25

申请号：US10090372

申请日：2002-03-04

Applicant: InterDigital Technology Corporation

Inventor： Ariela Zeira ,  Eldad Zeira ,  Alexander Reznik ,  Stephen E. Terry

IPC: H04Q007/00 ,  H04B007/216

CPC classification number: H04B1/7103 ,  H04B1/707 ,  H04B1/70735 ,  H04B1/7105 ,  H04B2001/70935 ,  H04B2201/70701 ,  H04B2201/70709 ,  H04J13/00 ,  H04J13/16

Abstract: A user equipment (UE) for a wireless time division duplex communication system which uses code division multiple access. The system communicates using communication bursts, each communication burst having a unique channelization code and a midamble code which is uniquely related to the channelization code. Each such midamble code being uniquely related to one or more channelization code. The UE has an antenna for receiving communication bursts and a midamble detector which detects each midamble code in a received communication burst. A logic block determines the channelization codes related to each detected midamble based on a mapping of midamble codes to related channelization codes. A channelization code detector detects channelization codes in the received communication burst from among channelization codes determined by said logic block. A multiuser detection device recovers data from the received communication burst based on in part the channelization codes detected by said channelization code detector. Where all midamble codes are uniquely related to one channelization code, the multiuser detection device recovers data from the received communication burst based on in part the determined channelization codes without the need for the channelization code detector.

Abstract translation: 一种用于无线时分双工通信系统的用户设备（UE），其使用码分多址。 该系统使用通信突发进行通信，每个通信突发具有唯一的信道化码和与信道化码唯一相关的中间码。 每个这样的中间码代码与一个或多个信道化代码唯一相关。 UE具有用于接收通信突发的天线和在接收的通信突发中检测每个中间码的中置码检测器。 逻辑块基于中间码编码与相关信道化码的映射来确定与每个检测到的中间码相关的信道化码。 信道化码检测器从由所述逻辑块确定的信道化码中检测接收到的通信脉冲串中的信道化码。 多用户检测装置部分地基于由所述信道化码检测器检测到的信道化码，从接收的通信脉冲串中恢复数据。 在所有中间码编码与一个信道化码唯一相关的情况下，多用户检测装置部分地基于所确定的信道化码而不需要信道化码检测器从接收到的通信脉冲串中恢复数据。

公开(公告)号：US20020080745A1

公开(公告)日：2002-06-27

申请号：US10075173

申请日：2002-02-14

Applicant: InterDigital Technology Corporation

Inventor： Stephen G. Dick ,  Eldad Zeira

IPC: H04B007/216

CPC classification number: H04J13/0014 ,  H04B1/707 ,  H04B2201/70701 ,  H04J13/16 ,  H04W72/02 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0466 ,  H04W88/08

Abstract: A base station receives access opportunities and packet data over a common packet channel. The common packet channel is defined by a predetermined set of codes and has a plurality of access opportunities. Each access opportunity is defined by a time slot and a signature. A code selection controller selects a currently unused code based on a code associated with a received access opportunity, such that a code, if available, is selected in response to receiving a signature in one of the time slots. The access opportunity defined by the received signature and the one time slot. A transmitter transmits an identifier of the selected available code. The transmitter sends communications encoded with the selected code.

Abstract translation: 基站通过公共分组信道接收接入机会和分组数据。 公共分组信道由预定的代码集定义并且具有多个访问机会。 每个访问机会由时隙和签名定义。 代码选择控制器基于与所接收的访问机会相关联的代码选择当前未使用的代码，使得响应于在时隙中的一个时隙中接收签名来选择代码（如果可用）。 由接收到的签名和一个时隙定义的访问机会。 发射机发送所选择的可用码的标识符。 发射机发送用选择的码编码的通信。

公开(公告)号：US20020075978A1

公开(公告)日：2002-06-20

申请号：US10075698

申请日：2002-02-14

Applicant: InterDigital Technology Corporation

Inventor： Stephen G. Dick ,  Eldad Zeira

IPC: H04L007/00

CPC classification number: H04W56/002 ,  H04B1/7073 ,  H04B7/2668 ,  H04B7/2687 ,  H04B7/269 ,  H04B7/2693 ,  H04B7/2696 ,  H04B2201/70702 ,  H04J3/0641 ,  H04W56/0065 ,  H04W56/0075

Abstract: The present invention is a method for adjusting a timing of at least one first base station to maintain synchronization with a neighboring base station. An estimation of a timing accuracy associated with each said at least one first base station with respect to said neighboring base station is determined. For each of the first base station having its timing accuracy over a threshold, a first message to transmit a communication burst is received by the first base station. The communication burst is then received by the neighboring base station and a measurement of an estimated time difference between the first base station and the neighboring base stations in response to a second message is made. The first base station's timing is then adjusted in response to the measurement.

Abstract translation: 本发明是一种用于调整至少一个第一基站的定时以维持与相邻基站的同步的方法。 确定与每个所述至少一个第一基站相对于所述相邻基站相关联的定时精度的估计。 对于具有超过阈值的定时精度的第一基站中的每一个，由第一基站接收到发送通信脉冲串的第一消息。 然后由相邻基站接收通信脉冲串，并响应于第二消息进行第一基站和相邻基站之间的估计时间差的测量。 然后根据测量结果调整第一个基站的时间。