公开(公告)号：WO9744970A2

公开(公告)日：1997-11-27

申请号：PCT/US9708677

申请日：1997-05-22

Applicant: QUALCOMM INC

Inventor： WEAVER LINDSAY A JR ,  HOLCMAN TONI L ,  MUNSINGER DAVID B ,  ZIV NOAM A ,  BAKER KENNETH R

IPC: H04W24/02 ,  H04W36/12 ,  H04W36/14 ,  H04Q7/22 ,  H04Q7/38

CPC classification number: H04W36/32 ,  H04W36/0083

Abstract: In a communications network, a network user communicates using a remote unit (125) with another user (30) via at least one base station (B1A). The network is comprised of first (MSC-I) and second (MSC-II) mobile switching control stations respectively controlling communications through a first set of base stations (B1A-B1E) including a first base station (B1A) and through a second set of base stations (B2A-B2E) including a second base station (B2A). To direct communications between the remote unit (125) and the first (B1A) and second base stations (B2A) the first base station (B1A) measures a round trip delay of an active communication signal between the first base station (B1A) and the remote unit (125). The remote unit (125) measures a first phase offset of a pilot signal received from a first candidate base station (B1A) and reports it to the first mobile switching center (MSC-I) via the first base station (B1A). The first mobile switching center (MSC-I) calculates a candidate round trip delay between the remote unit (125) and the first candidate base station (B1A) based on the first phase offset and the round trip delay of the active communication signal. An active communication control unit accesses a measurement directed hard handoff table to determine a location of the remote unit based on the round trip delay corresponding to the first active communication signal and the candidate round trip delay.

Abstract translation: 在通信网络中，网络用户经由至少一个基站（B1A）使用远程单元（125）与另一用户（30）进行通信。 网络由第一（MSC-I）和第二（MSC-II）移动交换控制站组成，分别通过包括第一基站（B1A）的第一组基站（B1A-B1E）和通过第二组 包括第二基站（B2A）的基站（B2A-B2E）。 为了引导远程单元（125）与第一（B1A）和第二基站（B2A）之间的通信，第一基站（B1A）测量第一基站（B1A）和第二基站（B1A）之间的活动通信信号的往返延迟 远程单元（125）。 远程单元（125）测量从第一候选基站（B1A）接收的导频信号的第一相位偏移，并经由第一基站（B1A）将其报告给第一移动交换中心（MSC-1）。 第一移动交换中心（MSC-I）基于主动通信信号的第一相位偏移和往返延迟来计算远程单元（125）和第一候选基站（B1A）之间的候选往返延迟。 主动通信控制单元基于与第一主动通信信号和候选往返延迟相对应的往返延迟来访问测量导向硬切换表以确定远程单元的位置。

公开(公告)号：WO9929051A9

公开(公告)日：1999-09-10

申请号：PCT/US9825491

申请日：1998-12-01

Applicant: QUALCOMM INC ,  BAKER KENNETH R

Inventor： BAKER KENNETH R

IPC: H04B7/10

CPC classification number: H04B7/1555 ,  H04B7/10 ,  Y02D70/00 ,  Y02D70/442 ,  Y02D70/446

Abstract: The invention includes methods and systems to improve the signal diversity between a repeater (105) and a base station (110) in a wireless communication system. A communications device (180) transmits a wireless signal (102). The repeater receives two versions of the wireless signal (102) using a first receiver system (312) and a second receiver (314) system. The repeater (105) transmits two versions of the wireless signal (102) that correspond to the two received versions. The repeater transmits the two versions with different signal polarizations so they can be isolated from one another at the base station (110). The base station receives the two versions from the repeater and isolates each version based on the difference in polarization. The base station (110) processes the two diverse versions (102) to produce a high-quality signal. The use of different polarizations to provide diverse signals between the repeater (105) and the base station (110) lowers signal power requirements and increases the capacity of CDMA systems.

Abstract translation: 本发明包括用于改善无线通信系统中的中继器（105）和基站（110）之间的信号分集的方法和系统。 通信设备（180）发送无线信号（102）。 中继器使用第一接收器系统（312）和第二接收器（314）系统接收无线信号（102）的两个版本。 中继器（105）发送对应于两个接收版本的两个版本的无线信号（102）。 中继器发射具有不同信号极化的两个版本，使得它们可以在基站（110）处彼此隔离。 基站接收来自中继器的两个版本，并基于极化的差异隔离每个版本。 基站（110）处理两个不同版本（102）以产生高质量信号。 在中继器（105）和基站（110）之间使用不同的极化来提供不同的信号降低了信号功率要求并增加了CDMA系统的容量。

公开(公告)号：EP1733569A4

公开(公告)日：2009-12-16

申请号：EP04750874

申请日：2004-04-30

Applicant: QUALCOMM INC

Inventor： BAKER KENNETH R ,  WHEATLEY CHARLES E III ,  WILLIS DAN ,  SHEYNBLAT LEONID

IPC: H04W36/08 ,  H04W52/46 ,  H04B7/155 ,  H04W8/00 ,  H04W16/26

CPC classification number: H04B7/155 ,  H04W16/26 ,  H04W36/0083 ,  H04W84/047

公开(公告)号：EP1623525A4

公开(公告)日：2008-07-02

申请号：EP04752206

申请日：2004-05-12

Applicant: QUALCOMM INC

Inventor： BAKER KENNETH R

IPC: H04B10/12 ,  H04B17/40 ,  H04W88/08

CPC classification number: H04W88/085 ,  H04B10/25753 ,  H04B10/25758 ,  H04B10/25759

Abstract: Apparatus and methods are disclosed for determining a tolerable propagation delay between a repeater and a base station in a communication system. In one embodiment, a tolerable length of fiber optic cable between a repeater and a base station is determined. More particularly, a desired search window size in time is determined. A maximum fiber optic cable delay value is determined based on the desired search window size. Also, a ratio value of fiber optic cable delay value to fiber optic cable length is then determined. The tolerable length of the fiber optic cable is then determined based on the maximum fiber optic cable delay value and the ratio value.