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：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。

公开(公告)号：US06496531B1

公开(公告)日：2002-12-17

申请号：US09389080

申请日：1999-09-02

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： H04B1713

CPC分类号： H04W52/50 ,  H04W52/12 ,  H04W52/146 ,  H04W52/40

摘要： A method and system for controlling down link transmit power during a soft hand-off in a spread-spectrum wireless system supports independent power control of multiple forward channels to reduce fading. For a soft hand-off, a mobile switching center determines if a forward control channel is transmitted from different sectors of base stations than a forward data channel is. The base stations preferably adjust transmit powers of the forward channels grouped into different physical channels by receiving power control data over the allocated reverse power control channels to compensate for fading of the forward channels during a soft hand-off.

摘要翻译： 用于在扩展频谱无线系统中的软切换期间控制下行链路发射功率的方法和系统支持多个前向信道的独立功率控制以减少衰落。 对于软切换，移动交换中心确定前向控制信道是否从正向数据信道的基站的不同扇区发送。 基站优选地通过在分配的反向功率控制信道上接收功率控制数据来调整分组成不同物理信道的前向信道的发射功率，以补偿在软切换期间前向信道的衰落。

公开(公告)号：US06285886B1

公开(公告)日：2001-09-04

申请号：US09349238

申请日：1999-07-08

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： H04B700

CPC分类号： H04W52/265 ,  H04W52/12 ,  H04W52/146 ,  H04W52/283

摘要： A power control method of the invention may be applied to downlink power control, uplink power control, or both to support different quality of service levels for multiple channels per a mobile station. The power control method transmits control data between a base station and a multi-channel mobile station on a single communications channel or sub-channel to minimize or reduce overhead traffic from the control data.

摘要翻译： 本发明的功率控制方法可以应用于下行链路功率控制，上行链路功率控制或两者，以支持每个移动站的多个信道的不同服务质量水平。 功率控制方法在单个通信信道或子信道上在基站和多信道移动站之间发送控制数据，以最小化或减少来自控制数据的开销流量。

公开(公告)号：US07190688B1

公开(公告)日：2007-03-13

申请号：US09157758

申请日：1998-09-21

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

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

IPC分类号： H04B7/216

CPC分类号： H04W52/243 ,  H04W52/50

摘要： A method and apparatus that permits base stations to adaptively set initial power levels in forward link traffic channels (i.e., base station to mobile unit) based on an interference measure, where the interference measure is the difference between the base station transmitted pilot EC/IO and the mobile unit received pilot EC/IO. The interference measure indicates how much interference is present from other base stations in the mobile unit's locale, mobile receiver noise and other similar sources. Call quality and system capacity are optimized since the initial power level is set in accordance with the interference environment. The method of the invention implements the adaptive setting by extracting the mobile unit received pilot EC/IO from the access message transmitted by the mobile unit. The interference measure is then determined and used by the base station to set the initial power level in the forward link traffic channel.

摘要翻译： 一种允许基站基于干扰测量自适应地将前向链路业务信道（即，基站到移动单元）中的初始功率电平设置的方法和装置，其中干扰测量是基站发射导频E

公开(公告)号：US06374103B1

公开(公告)日：2002-04-16

申请号：US09164399

申请日：1998-09-30

申请人： Raafat Edward Kamel ,  Martin Howard Meyers ,  Charles Albert Sanders ,  Carl Francis Weaver

发明人： Raafat Edward Kamel ,  Martin Howard Meyers ,  Charles Albert Sanders ,  Carl Francis Weaver

IPC分类号： H04Q708

CPC分类号： H04W68/00

摘要： A method and apparatus for arranging transmission of overhead messages on the paging channel of a wireless communications system is described. Certain paging channel slots are established, based on a timing reference, that must contain an overhead message. In the intervening slots or slot fragments, the base station transmits mobile-directed messages, when they are available. When no mobile directed messages are available for transmission, the base station selects an overhead message from a queue for transmission on the intervening paging channel slot or slot fragment.

摘要翻译： 描述了一种在无线通信系统的寻呼信道上安排开销消息传输的方法和装置。 基于定时参考建立某些寻呼信道时隙，其必须包含开销消息。 在插入时隙或时隙片段中，当基站可用时，基站发送移动定向的消息。 当没有移动定向消息可用于传输时，基站从队列中选择开销消息以在中间寻呼信道时隙或时隙片段上进行传输。

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：US06535723B1

公开(公告)日：2003-03-18

申请号：US09267998

申请日：1999-03-15

申请人： Frances Jiang ,  Raafat Edward Kamel ,  Quinn Li ,  Alexandro Federico Salvarani ,  Carl Francis Weaver

发明人： Frances Jiang ,  Raafat Edward Kamel ,  Quinn Li ,  Alexandro Federico Salvarani ,  Carl Francis Weaver

IPC分类号： H04B106

CPC分类号： H04W52/265 ,  H04W52/12 ,  H04W52/241 ,  H04W52/267 ,  H04W52/36 ,  H04W52/40

摘要： A method of controlling the power in a wireless communication system. In one embodiment of the invention, a base station determines the information rate of a signal to be transmitted to a mobile station, and obtains the variable power control scaling factor based on this information rate. The base station then transmits the variable power control scaling factor to the mobile station. The mobile station determines a target signal quality measurement for a received signal from the base station, such as a target Eb/N0, and scales the target Eb/N0 by the variable power control scaling factor. The mobile station also obtains an information rate scaling factor based on the information rate of the received signal, and further scales the target Eb/N0 by this information rate scaling factor. The mobile station then compares the target Eb/N0 to a measured Eb/N0 of the received signal. An increase in power of the received signal is requested when the measured Eb/N0 of the received signal is smaller than the scaled Eb/N0. A decrease in power of the received signal is requested when the measured Eb/N0 of the received signal is larger than the scaled Eb/N0. Providing the variable power control scaling factor to the mobile station allows frames having an information rate lower than the full rate to be transmitted at a power even lower than the power of a frame having an information rate equal to the full rate times the information scaling factor.

摘要翻译： 一种在无线通信系统中控制功率的方法。 在本发明的一个实施例中，基站确定要发送到移动台的信号的信息速率，并且基于该信息速率获得可变功率控制缩放因子。 然后，基站向移动台发送可变功率控制缩放因子。 移动台确定来自诸如目标Eb / N0的基站的接收信号的目标信号质量测量，并且通过可变功率控制缩放因子对目标Eb / N0进行缩放。 移动站还根据接收信号的信息速率获得信息速率缩放因子，并且通过该信息速率缩放因子进一步缩放目标Eb / N0。 然后，移动台将目标Eb / N0与接收信号的测量Eb / N0进行比较。 当所测量的接收信号的Eb / N0小于缩放的Eb / N0时，请求接收信号功率的增加。 当所测量的接收信号的Eb / N0大于缩放的Eb / N0时，请求接收信号功率的降低。 向移动台提供可变功率控制缩放因子允许具有低于全速率的信息速率的帧以甚至低于具有等于全速率的信息速率的帧的功率乘以信息缩放因子的功率发送 。

公开(公告)号：US06609007B1

公开(公告)日：2003-08-19

申请号：US09395494

申请日：1999-09-14

申请人： Edward Ellis Eibling ,  Raafat Edward Kamel ,  Wen-Yi Kuo ,  Mathew Thomas ,  Carl Francis Weaver

发明人： Edward Ellis Eibling ,  Raafat Edward Kamel ,  Wen-Yi Kuo ,  Mathew Thomas ,  Carl Francis Weaver

IPC分类号： H04Q720

CPC分类号： H04W52/226 ,  H04W52/143

摘要： A method that adjusts the power level of a set of forward-link signals of a base station responsive to the loading of the forward link as determined by a power level measurement of the signal set. One power level measurement is a pilot fraction of the forward link. Other power level measurements, such as the signal set's power level, can be used, alone or in combination, instead of or in addition to the pilot fraction of the forward link to adjust the power level of the signal set. The power level of the signal set can be changed in any manner, including by scaling it by a scaling factor, or by increasing the power level by a fixed or a variable amount. The power level measurement of the signal set is obtained during a current time period. The scaling factor that will be used in the subsequent time period is determined using the power level measurement. In one embodiment of the invention, the scaling factor can be obtained from a look-up table that is based on the power level measurement. If the cell containing the base station includes several sectors, the power level of the signal set in a sector is adjusted when the power level measurement in that sector indicates that the power level should be adjusted.

摘要翻译： 一种响应于由信号组的功率电平测量确定的正向链路的加载来调整基站的一组前向链路信号的功率电平的方法。 一个功率电平测量是前向链路的导频部分。 可以单独或组合地使用诸如信号组的功率电平的其它功率电平测量，而不是前导链路的导频部分或除了前向链路的导频部分之外，以调整信号集的功率电平。 信号组的功率电平可以以任何方式改变，包括通过缩放比例缩放，或通过将功率电平增加固定或可变量。 在当前时间段期间获得信号组的功率电平测量。 将在后续时间段内使用的缩放因子使用功率电平测量来确定。 在本发明的一个实施例中，可以从基于功率电平测量的查找表中获得缩放因子。 如果包含基站的小区包括几个扇区，则当扇区中的功率电平测量指示应调整功率电平时，调整扇区中设置的信号的功率电平。

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。