公开(公告)号：US20080070576A1

公开(公告)日：2008-03-20

申请号：US11524174

申请日：2006-09-20

申请人： Susan Wu Sanders ,  Carl Francis Weaver ,  Qinqing Zhang

发明人： Susan Wu Sanders ,  Carl Francis Weaver ,  Qinqing Zhang

IPC分类号： H04Q7/20

CPC分类号： H04W36/08 ,  H04W36/30

摘要： A method of handoff utilizing a combined signal quality measurement to trigger or initiate a handoff of a mobile station to a plurality of neighbor base stations, wherein the combined signal quality measurement corresponds to a summation of signal quality measurements associated with the plurality of neighbor base stations. The handoff is triggered when the combined signal quality measurement is greater than a handoff threshold. By using the combined signal quality measurement instead of a signal quality measurement of an individual neighbor base station, handoffs can be triggered earlier along a boundary shared by neighbor cells, thereby reducing interference associated with later triggered handoffs. When triggered, the mobile station is handed off to a plurality of neighbor base stations allowing the mobile station to establish simultaneous communication links with two or more neighbor base station. This increases the chance that at least one of the communication links or the combination thereof is a strong communication link, thereby improving the reliability and success rate of handoffs.

摘要翻译： 一种利用组合信号质量测量来触发或发起移动台到多个相邻基站的切换的切换方法，其中组合信号质量测量对应于与多个相邻基站相关联的信号质量测量的总和 。 当组合信号质量测量值大于切换阈值时，触发切换。 通过使用组合的信号质量测量而不是各个相邻基站的信号质量测量，可以沿着相邻小区共享的边界更早地触发切换，从而减少与稍后触发的切换相关联的干扰。 当触发时，将移动台切换到允许移动台与两个或更多个相邻基站建立同时通信链路的多个相邻基站。 这增加了至少一个通信链路或其组合是强的通信链路的机会，从而提高了切换的可靠性和成功率。

公开(公告)号：US09081078B2

公开(公告)日：2015-07-14

申请号：US12698243

申请日：2010-02-02

申请人： John M. Graybeal ,  Amit Mukhopadhyay ,  Susan Wu Sanders ,  Carl Francis Weaver

发明人： John M. Graybeal ,  Amit Mukhopadhyay ,  Susan Wu Sanders ,  Carl Francis Weaver

IPC分类号： G01S3/02 ,  G01S5/00 ,  G01S5/02

CPC分类号： G01S5/0036 ,  G01S5/02

摘要： In providing a wireless location communication service including a location based service to a user of a mobile device, the mobile device sends information concerning a location of the device relative to a given position in a wireless communication system. The given position may be that of a base station in the system. First information concerning a location of the base station (e.g, GPS information) is communicated to the mobile device, e.g., via broadcast. The mobile device determines second information concerning its location, e.g., based on signals from GPS satellites received thereby. The mobile device then generates relative location information based at least on the first and second information.

摘要翻译： 在向移动设备的用户提供包括基于位置的服务的无线位置通信服务时，移动设备在无线通信系统中发送关于设备相对于给定位置的位置的信息。 给定的位置可以是系统中的基站的位置。 关于基站的位置的第一信息（例如，GPS信息）例如经由广播被传送到移动设备。 移动设备例如基于从其接收的GPS卫星的信号来确定关于其位置的第二信息。 然后，移动设备至少基于第一和第二信息生成相对位置信息。

公开(公告)号：US07852963B2

公开(公告)日：2010-12-14

申请号：US10793013

申请日：2004-03-05

申请人： Tai-Ann Chen ,  Martin Howard Meyers ,  Susan Wu Sanders ,  Carl Francis Weaver

发明人： Tai-Ann Chen ,  Martin Howard Meyers ,  Susan Wu Sanders ,  Carl Francis Weaver

IPC分类号： H04L27/06

CPC分类号： H04L1/20 ,  H04B7/0617 ,  H04B17/336 ,  H04B17/373

摘要： A method and system for predicting a signal power to interference metric for a communication channel in a coverage area of a phase sweep diversity communication system are provided. In the method, a signal power to interference metric for the communication channel is predicted based on a sweep frequency for transmissions in the coverage area. The signal power to interference metric predicted may be a carrier-to-interference ratio or a signal-to-noise plus interference ratio.

摘要翻译： 提供了一种用于预测相位扫描分集通信系统的覆盖区域中的通信信道的信号功率对干扰度量的方法和系统。 在该方法中，基于覆盖区域中的传输的扫描频率预测通信信道的信号功率对干扰度量。 预测的信号功率对干扰度量可以是载波干扰比或信噪比加干扰比。

公开(公告)号：US09467950B2

公开(公告)日：2016-10-11

申请号：US11353403

申请日：2006-02-14

申请人： Andrew R. Kostic ,  Charles Albert Sanders ,  Susan Wu Sanders ,  Carl Francis Weaver

发明人： Andrew R. Kostic ,  Charles Albert Sanders ,  Susan Wu Sanders ,  Carl Francis Weaver

IPC分类号： H04B7/00 ,  H04W52/14 ,  H04W52/12 ,  H04W52/40

CPC分类号： H04W52/143 ,  H04W52/12 ,  H04W52/40

摘要： A system is implemented on a wireless network for adjusting a forward link power control parameter based on forward link feedback. A wireless unit is in communication with several base stations during soft handoff, and provides feedback relating to forward link quality, e.g., forward link pilot signal strength or traffic channel frame error rate. The feedback is compared to a comparison or reference point (such as target frame error rate, or a maximum pilot signal strength in the active set) chosen for gauging the quality or nature of the feedback for power control purposes. Based on this comparison, a power control parameter of one or more of the base stations may be adjusted upwards or downward. The power control parameter may be a forward link reference transmit power level “Pref” used to control base station power transmission levels in the presence of power control bit errors.

摘要翻译： 在无线网络上实现基于前向链路反馈来调整前向链路功率控制参数的系统。 无线单元在软切换期间与几个基站通信，并且提供与前向链路质量有关的反馈，例如前向链路导频信号强度或业务信道帧错误率。 将反馈与用于衡量用于功率控制目的的反馈的质量或性质所选择的比较或参考点（例如目标帧误差率或有效集合中的最大导频信号强度）进行比较。 基于该比较，可以向上或向下调整一个或多个基站的功率控制参数。 功率控制参数可以是用于在存在功率控制位错误的情况下控制基站功率传输电平的前向链路参考发射功率电平“Pref”。

公开(公告)号：US20110187599A1

公开(公告)日：2011-08-04

申请号：US12698243

申请日：2010-02-02

申请人： John M. Graybeal ,  Amit Mukhopadhyay ,  Susan Wu Sanders ,  Carl Francis Weaver

发明人： John M. Graybeal ,  Amit Mukhopadhyay ,  Susan Wu Sanders ,  Carl Francis Weaver

IPC分类号： G01S3/02

CPC分类号： G01S5/0036 ,  G01S5/02

摘要： In providing a wireless location communication service including a location based service to a user of a mobile device, the mobile device sends information concerning a location of the device relative to a given position in a wireless communication system. The given position may be that of a base station in the system. First information concerning a location of the base station (e.g, GPS information) is communicated to the mobile device, e.g., via broadcast. The mobile device determines second information concerning its location, e.g., based on signals from GPS satellites received thereby. The mobile device then generates relative location information based at least on the first and second information.

摘要翻译： 在向移动设备的用户提供包括基于位置的服务的无线位置通信服务时，移动设备在无线通信系统中发送关于设备相对于给定位置的位置的信息。 给定的位置可以是系统中的基站的位置。 关于基站的位置的第一信息（例如，GPS信息）例如经由广播被传送到移动设备。 移动设备例如基于从其接收的GPS卫星的信号来确定关于其位置的第二信息。 然后，移动设备至少基于第一和第二信息生成相对位置信息。

公开(公告)号：US06771963B1

公开(公告)日：2004-08-03

申请号：US09135191

申请日：1998-08-17

申请人： Terry Si-Fong Cheng ,  Ching Huang ,  Yuen-Yin L. Koo ,  Shen-De Lin ,  Carl Francis Weaver ,  Wen-Yi Kuo

发明人： Terry Si-Fong Cheng ,  Ching Huang ,  Yuen-Yin L. Koo ,  Shen-De Lin ,  Carl Francis Weaver ,  Wen-Yi Kuo

IPC分类号： H04Q720

CPC分类号： H04W52/242 ,  H04W36/30

摘要： A procedure for triggering a handdown or a handoff a mobile station served by a base station of a cellular wireless communication system. A tolerable path loss for signal links between the base station and a mobile station located within the base station's cell, is initially determined. A control signal is radiated at a known transmit power level from the base station over its cell. A receive power level threshold is determined for the control signal for reception by the mobile station, according to the transmit power level and the tolerable path loss. A handoff of the mobile station is triggered after deriving the received power level of the control signal at the mobile station, and determining that the received power level is less than the receive power level threshold. In one embodiment, a mobile station reports to a serving base station only after the former determines that the received power level of a control signal from the base station is less than a threshold level initially provided to the mobile station by the base station. The procedure is applicable, e.g., to base station cells of a first CDMA cellular system which cells border on cells of an analog (AMPS) or a second CDMA cellular system.

摘要翻译： 用于触发由蜂窝无线通信系统的基站服务的移动台的切换或切换的过程。 最初确定基站和位于基站小区内的移动台之间的信号链路的可容忍路径损耗。 控制信号以已知的发射功率电平从基站在其小区上辐射。 根据发射功率电平和容许路径损耗，确定移动台接收控制信号的接收功率电平门限。 在移动站获得控制信号的接收功率电平之后触发移动台的越区切换，并确定接收功率电平小于接收功率电平门限。 在一个实施例中，移动台仅在前者确定来自基站的控制信号的接收功率电平小于由基站最初提供给移动台的阈值电平之前才向服务基站报告。 该过程例如适用于第一CDMA蜂窝系统的基站小区，该小区在模拟（AMPS）或第二CDMA蜂窝系统的小区上边界。

公开(公告)号：US06628958B1

公开(公告)日：2003-09-30

申请号：US09396947

申请日：1999-09-15

申请人： Raafat Edward Kamel ,  Martin Howard Meyers ,  Carl Francis Weaver ,  Xiao Cheng Wu

发明人： Raafat Edward Kamel ,  Martin Howard Meyers ,  Carl Francis Weaver ,  Xiao Cheng Wu

IPC分类号： H04Q720

CPC分类号： H04W52/40 ,  H04W36/18 ,  H04W52/12 ,  H04W52/36

摘要： A base station in a soft handoff adjusts its transmit power level by a first amount if the base station is participating in a soft handoff and by a second amount if the base station is not participating in the soft handoff, i.e. in simplex mode. The first and second amounts are different. In one embodiment of the invention, the adjustment is performed by using a down-step size that is larger in magnitude than an up-step size when the base station is in soft handoff. The transmit power level is then adjusted by the smaller up and larger down step sizes when the base station receives an indication to adjust the transmit power level. The step sizes used when the base station is in simplex mode is larger than the up-step size and smaller than the down step size. In another embodiment, when the base station is in soft handoff, the adjustment is performed by adjusting the transmit power level by the same step size as used during simplex mode when the base station receives an indication to adjust the transmit power level and then reducing the result by a reduction amount. The order of these two steps can be reversed, and the transmit power level can be first reduced by the reduction amount and then adjusted by the same step sizes as used during simplex mode. The reduction amount has a magnitude greater than zero and smaller than the step size. The method of adjusting the base station transmit power level by different amounts based on whether the base station participating in a soft handoff can be used with the method of programming each base station in a soft handoff with a threshold power level to constrain the power transmitted by the base station on the forward link. When the threshold power level is a minimum-threshold power level, each base station maintains its transmit power level at or above the minimum-threshold power level. When the threshold power level is a maximum-threshold power level, each base station maintains its transmit power level at or below the maximum-threshold power level. The threshold power level can be either an adjustable or a fixed threshold power level.

公开(公告)号：US07142867B1

公开(公告)日：2006-11-28

申请号：US09663265

申请日：2000-09-15

申请人： Asif Dawoodi Gandhi ,  Raafat Edward Kamel ,  Mathew Thomas ,  Stanley Vitebsky ,  Carl Francis Weaver

发明人： Asif Dawoodi Gandhi ,  Raafat Edward Kamel ,  Mathew Thomas ,  Stanley Vitebsky ,  Carl Francis Weaver

IPC分类号： H04Q7/20 ,  H04J3/16

CPC分类号： H04W28/22 ,  H04L1/0002 ,  H04W72/0486 ,  H04W72/082

摘要： A method is disclosed for determining when a request for a higher transmission rate should be granted to a mobile station that currently has access to a communication system to facilitate the maintenance of a performance target (quality of service level) of the reverse link. The method for determining when a mobile station can have access to a higher transmission rate includes obtaining first and second estimated performance indicators for a reverse link of the base station that a mobile station is currently accessing. A blocking threshold value is established. Access at the requested higher transmission rate is based on a comparison of the first and second indicators relative to the established blocking threshold value. If access is denied at the requested higher rate, access will be granted at the next lower rate which will not degrade the performance of the wireless communication system.

摘要翻译： 公开了一种用于确定何时应当向当前可以访问通信系统的移动台授予更高传输速率的请求以便于维护反向链路的性能目标（服务质量水平）的方法。 用于确定何时移动台能够访问较高传输速率的方法包括获得用于移动台正在访问的基站的反向链路的第一和第二估计性能指示符。 建立阻塞阈值。 以所请求的较高传输速率进行访问是基于第一和第二指示符相对于建立的阻塞阈值的比较。 如果访问以所请求的较高速率被拒绝，则将以下一个更低的速率授予访问，这不会降低无线通信系统的性能。

公开(公告)号：US07006485B2

公开(公告)日：2006-02-28

申请号：US09990468

申请日：2001-11-21

申请人： Qi Bi ,  Wen-Yi Kuo ,  Martin Howard Meyers ,  Charles Albert Sanders ,  Carl Francis Weaver

发明人： Qi Bi ,  Wen-Yi Kuo ,  Martin Howard Meyers ,  Charles Albert Sanders ,  Carl Francis Weaver

IPC分类号： H04B7/216

CPC分类号： H04W16/00 ,  H04W16/24 ,  H04W36/18

摘要： A method for reducing multiple dominant pilots in a CDMA transmission system comprises linking a transceiver element with a nearby base station for transporting signals between the transceiver element and the nearby base station. Transmitting from the transceiver element forward link signals of a nearby sector associated with the nearby base station. An apparatus is also described.

公开(公告)号：US06697343B1

公开(公告)日：2004-02-24

申请号：US09383233

申请日：1999-08-26

申请人： Raafat Edward Kamel ,  Wen-Yi Kuo ,  Martin Howard Meyers ,  Carl Francis Weaver ,  Xiao Cheng Wu

发明人： Raafat Edward Kamel ,  Wen-Yi Kuo ,  Martin Howard Meyers ,  Carl Francis Weaver ,  Xiao Cheng Wu

IPC分类号： G08C1700

CPC分类号： H04L1/0072 ,  H04L1/0014 ,  H04L1/0025 ,  H04L1/003 ,  H04L1/0039

摘要： A base station assembles a frame including information bits at a vocoding rate for downlink transmission over a traffic channel as channel bits at a channel rate. The base station places at least one rate-indicating bit at a beginning of the frame for indicating the vocoding rate. The mobile station evaluates the downlink transmission with consideration of the vocoding rate indicated by the at least one rate-indicating bit. The mobile station can determine the vocoding rate by decoding the beginning of the frame to permit power control in less than one frame duration from initial receipt of the frame at the mobile station.

摘要翻译： 一个基站组装一个帧，包括一个声码率的信息比特，用于通过业务信道进行下行链路传输，作为信道速率的信道比特。 基站在帧的开始处放置至少一个速率指示位，用于指示声码率。 考虑到由至少一个速率指示位指示的声码速率，移动站评估下行链路传输。 移动台可以通过解码帧的开始来确定声码速率，从而允许在移动站的初始接收帧的不到一帧的持续时间内进行功率控制。