公开(公告)号：US07117017B2

公开(公告)日：2006-10-03

申请号：US10454063

申请日：2003-06-03

申请人： Tao Chen ,  Fuyun Ling ,  Jack Holtzman ,  Yu-Cheun Jou ,  Stein A. Lundby

发明人： Tao Chen ,  Fuyun Ling ,  Jack Holtzman ,  Yu-Cheun Jou ,  Stein A. Lundby

IPC分类号： H04B1/38

CPC分类号： H01Q3/2605 ,  H01Q1/246 ,  H04B7/0408 ,  H04B7/0615 ,  H04B7/0617 ,  H04B7/086

摘要： A method and apparatus for wireless communications wherein a base station transmits a signal to sending data to a subscriber station through a signal beam that sweeps through the coverage area of the base station. User data addressed to the subscriber station is buffered until the signal beam angle of the signal beam allows efficient transmission. The base station may alter the beam sweep speed or the shape of the beam's radiation pattern over time to maximize system efficiency and capacity.

公开(公告)号：US20050054366A1

公开(公告)日：2005-03-10

申请号：US10968788

申请日：2004-10-18

申请人： Tao Chen ,  Jack Holtzman ,  Leonid Razoumov ,  Shimman Patel ,  Keith Saints ,  Edward Tiedemann

发明人： Tao Chen ,  Jack Holtzman ,  Leonid Razoumov ,  Shimman Patel ,  Keith Saints ,  Edward Tiedemann

IPC分类号： H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  H04L1/06 ,  H04Q7/20

CPC分类号： H04W52/362 ,  H04W52/12 ,  H04W52/40

摘要： Method and apparatus for adjusting the transmission power of base stations in simultaneous communication with a mobile station. The methods described provide for the transmission power of the base stations to be aligned. In the first exemplary embodiment, the transmitters are attached to a separate control unit through communication links. The control unit then derives the most likely command stream and send that to the base stations. In the second exemplary embodiment, the control unit periodically receives the final or average transmit level in a period and an aggregate quality measure for the feedback during a period from each of the transmitters. The control unit determines the aligned power level and transmits a message indicative of the aligned power level to the transmitters.

摘要翻译： 用于调整与移动台同时通信的基站的发射功率的方法和装置。 所描述的方法提供了要对准的基站的发射功率。 在第一示例性实施例中，发射机通过通信链路附接到单独的控制单元。 控制单元然后导出最可能的命令流并将其发送到基站。 在第二示例性实施例中，控制单元在每个发射机的周期期间周期性地接收一段时间内的最终或平均发送电平以及用于反馈的总体质量度量。 控制单元确定对准的功率电平，并将指示对准的功率电平的消息发送到发射机。

公开(公告)号：US06850506B1

公开(公告)日：2005-02-01

申请号：US09528235

申请日：2000-03-17

申请人： Jack Holtzman ,  Gang Bao

发明人： Jack Holtzman ,  Gang Bao

IPC分类号： H04J13/00 ,  H04B7/005 ,  H04B7/26 ,  H04L1/00 ,  H04L12/28 ,  H04W52/16 ,  H04W52/22 ,  H04W52/26 ,  H04W52/50 ,  H04W72/12 ,  H04B7/216

CPC分类号： H04W72/1226 ,  H04L1/0002 ,  H04L1/0015 ,  H04L1/0046 ,  H04W52/16 ,  H04W52/223 ,  H04W52/26 ,  H04W52/50 ,  H04W72/1242

摘要： A method and apparatus for selecting a favored transmission slot for communicating non-voice data in conjunction with a voice-data communication. The slot, reflecting a favored power level and transmission rate for transmitting the non-voice data on a supplemental channel, is selected based upon the transmission power levels for voice-data transmitted by a base station to a remote station on a fundamental channel. The favored transmission slot is selected without the remote station messaging information to the base station concerning frequency channel or interference information for the supplemental channel. A method of performing forward-link scheduling in a wireless communication system includes determining the available base station power at the beginning of a frame, predicting the required transmit power at the beginning of the frame for each supplemental channel, determining rates sustainable with the predicted transmit power, dividing by throughput over a recent window to obtain a supplemental channel priority index, and allowing the supplemental channel with the highest priority index to transmit over the next frame.

摘要翻译： 一种用于选择有利的传输时隙的方法和装置，用于结合语音数据通信来传送非语音数据。 基于在基本信道上由基站发送到远程站的语音数据的发送功率电平来选择反映用于在辅助信道上发送非语音数据的有利功率电平和传输速率的时隙。 选择有利的传输时隙，而无需向基站发送关于用于补充信道的频率信道或干扰信息的远程站消息传递信息。 在无线通信系统中执行前向链路调度的方法包括：确定帧开始处的可用基站功率，在每个补充信道的帧开始处预测所需的发射功率，确定具有预测的传输可持续的速率 功率除以最近窗口的吞吐量以获得补充信道优先级索引，并允许具有最高优先级索引的补充信道在下一帧上进行传输。

公开(公告)号：US20050003848A1

公开(公告)日：2005-01-06

申请号：US10889808

申请日：2004-07-12

申请人： Tao Chen ,  Jack Holtzman ,  Fuyun Ling ,  Keith Saints ,  Nagabhushana Sindhushayana ,  Charles Wheatley

发明人： Tao Chen ,  Jack Holtzman ,  Fuyun Ling ,  Keith Saints ,  Nagabhushana Sindhushayana ,  Charles Wheatley

IPC分类号： H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  H04L1/00 ,  H04L1/20 ,  G05B9/02 ,  H04B7/00

CPC分类号： H04W52/12 ,  H04L1/0051 ,  H04L1/0066 ,  H04L1/208 ,  H04W52/20 ,  H04W52/36

摘要： Techniques to adjust the setpoint of a power control loop in a wireless communication system. The setpoint may be adjusted based on frame status indicative of erased/good decoded frames, one or more (typically soft) metrics indicative of the confidence in the decoded results, power surplus/deficit indicative of the difference between the received signal quality and the setpoint, setpoint surplus/deficit indicative of the difference between the setpoint and a threshold Eb/Nt needed for the desired level of performance, or a combination thereof. The metrics may include re-encoded symbol error rate, re-encoded power metric, modified Yamamoto metric, minimum or average LLR among decoded bits, number of decoding iterations, and possibly others. The setpoint may be adjusted in different manners and/or by different amounts depending on the above-noted factors. The techniques may be employed for forward and/or reverse links in CDMA systems.

摘要翻译： 调整无线通信系统中功率控制回路设定值的技术。 可以基于指示擦除/良好解码帧的帧状态来调整设定点，指示解码结果的置信度的一个或多个（通常是软的）度量，指示接收到的信号质量和设定点之间的差异的功率余量/ ，表示设定值与所需性能水平所需的阈值Eb / Nt之间的差异的设定值剩余/缺失，或其组合。 度量可以包括重新编码的符号错误率，重新编码的功率度量，修改的Yamamoto度量，解码比特中的最小或平均LLR，解码迭代次数，以及可能的其他值。 可以根据上述因素以不同的方式和/或不同的量调节设定点。 这些技术可以用于CDMA系统中的前向和/或反向链路。

公开(公告)号：US06404760B1

公开(公告)日：2002-06-11

申请号：US09356610

申请日：1999-07-19

申请人： Jack Holtzman ,  Dilip G. Warrier

发明人： Jack Holtzman ,  Dilip G. Warrier

IPC分类号： H04J1100

CPC分类号： H04B1/7107 ,  H04B1/71072 ,  H04B2001/71077 ,  H04B2201/70701

摘要： Several methods and corresponding apparatus to reduce multiple access interference in code division multiple access communications systems through successive interference cancellation techniques. An estimate of reliability of cancellation of a strongest interfering signal is formed from analysis of a pilot signal associated with the strongest signal. The estimate is used to derive a weight that is multiplied by a replica of the strongest signal to provide a weighted replica. The weighted replica is subtracted from a delayed version of the received channel. As a result, interference cancellation is robustly implemented when the strongest signal replica is most likely to be accurate and is not robustly implemented when the strongest signal replica is not likely to be accurate. This avoids combining a replica of the strongest signal with the received channel when the replica is more likely to contribute additional interference rather than reduce it.

摘要翻译： 通过连续的干扰消除技术，减少码分多址通信系统中的多址干扰的几种方法和相应装置。 通过对与最强信号相关联的导频信号的分析形成对最强干扰信号的抵消的可靠性的估计。 该估计用于导出乘以最强信号的副本以提供加权副本的权重。 从所接收的信道的延迟版本中减去加权副本。 因此，当最强的信号复制品最有可能是准确的并且当最强的信号复制品不太可能是准确的时，不能很强的实现干扰消除。 这避免了当副本更有可能产生额外的干扰而不是减少时，将最强信号的副本与接收的信道组合。

公开(公告)号：US06351650B1

公开(公告)日：2002-02-26

申请号：US09239187

申请日：1999-01-28

申请人： Stein A. Lundby ,  Leonid Razoumov ,  Jack Holtzman

发明人： Stein A. Lundby ,  Leonid Razoumov ,  Jack Holtzman

IPC分类号： H04Q720

CPC分类号： H04W52/221 ,  H04W52/226 ,  H04W52/40

摘要： Forward power control during a soft handoff in a wireless communication system is accomplished by tracking each power command (PC) transmitted from a mobile unit to two or more base station transceiver systems (BTSs). Each BTS may interpret power commands differently due to noise. However, the power commands are relayed to a selector along with additional data transmitted in a conventional fashion. The selector determines the power levels of each BTS and transmits power charge commands to maintain power balance between the BTSs. The BTSs may transmit each PC command to the selector or accumulate several PC commands and send a PC history to the selector. The selector generates a reference PC history, which may be one of the PC histories transmitted from a BTS, a combination thereof, the result of data processing on the one or more PC histories. Individual power change commands or the reference PC history is transmitted back to the BTS to adjust the transmitter output level of each BTS so that the BTSs are transmitting at compatible signal levels.

摘要翻译： 通过将从移动单元发送的每个功率命令（PC）跟踪到两个或更多个基站收发器系统（BTS）来实现在无线通信系统中的软切换期间的前向功率控制。 每个BTS可能由于噪声而不同地解释功率指令。 然而，功率命令与以常规方式发送的附加数据一起被中继到选择器。 选择器确定每个BTS的功率电平，并发送功率电荷命令以维持BTS之间的功率平衡。 BTS可以将每个PC命令发送到选择器，或者累积几个PC命令并将PC历史发送给选择器。 选择器产生参考PC历史，其可以是从BTS发送的PC历史之一，其组合，对一个或多个PC历史的数据处理结果。 单独的电力变化命令或参考PC历史被发送回BTS以调整每个BTS的发射机输出电平，使得BTS以兼容的信号电平进行发射。

公开(公告)号：US06310869B1

公开(公告)日：2001-10-30

申请号：US09144402

申请日：1998-08-31

申请人： Jack Holtzman ,  Daisuke Terasawa ,  Leonid Razoumov

发明人： Jack Holtzman ,  Daisuke Terasawa ,  Leonid Razoumov

IPC分类号： H04J1300

CPC分类号： H04W52/04 ,  H04B1/707 ,  H04B1/7103 ,  H04B2201/70701 ,  H04B2201/70706 ,  H04J13/004 ,  H04J13/0048 ,  H04J13/12 ,  H04L27/2615 ,  H04L2025/03777

摘要： Several methods and corresponding apparatus reduce peak to average power in signals transmitted in a wireless communications system, particularly with respect to pilot symbols transmitted from a base station to several user stations. A large peak to average amplitude of inserted pilot symbols has been found to result from a common sign chip position that exists in orthogonal codes, such as Walsh codes. In a first embodiment, the Walsh codes are multiplied by a random value of ±1. Under a second embodiment, the common sign chip position is eliminated in each Walsh code. The user station then inserts the missing chip position to regain orthogonality. In a third embodiment, the base station transmits pilot symbols, on a separate pilot channel, in only symbol positions that user stations expect to find pilot symbols. Under a fourth embodiment, each Walsh code is randomly shifted.

摘要翻译： 几种方法和相应的装置减少了在无线通信系统中发送的信号中的峰均功率，特别是关于从基站发送到若干用户站的导频符号。 已经发现插入的导频符号的峰值到平均幅度大的是由诸如沃尔什码之类的正交码中存在的公共符号码片位置产生的。 在第一实施例中，沃尔什码乘以±1的随机值。 在第二实施例中，在每个沃尔什码中消除了共用码片位置。 然后用户站插入丢失的芯片位置以重新获得正交性。 在第三实施例中，基站在单独的导频信道上仅发送用户站希望找到导频符号的符号位置的导频符号。 在第四实施例中，每个沃尔什码随机移位。

公开(公告)号：US07072321B2

公开(公告)日：2006-07-04

申请号：US10972198

申请日：2004-10-22

申请人： Jack Holtzman ,  Gang Bao

发明人： Jack Holtzman ,  Gang Bao

IPC分类号： H04B7/216

CPC分类号： H04W72/1226 ,  H04L1/0002 ,  H04L1/0015 ,  H04L1/0046 ,  H04W52/16 ,  H04W52/223 ,  H04W52/26 ,  H04W52/50 ,  H04W72/1242

摘要： A method and apparatus for selecting a favored transmission slot for communicating non-voice data in conjunction with a voice-data communication. The slot, reflecting a favored power level and transmission rate for transmitting the non-voice data on a supplemental channel, is selected based upon the transmission power levels for voice-data transmitted by a base station to a remote station on a fundamental channel. The favored transmission slot is selected without the remote station messaging information to the base station concerning frequency channel or interference information for the supplemental channel. A method of performing forward-link scheduling in a wireless communication system includes determining the available base station power at the beginning of a frame, predicting the required transmit power at the beginning of the frame for each supplemental channel, determining rates sustainable with the predicted transmit power, dividing by throughput over a recent window to obtain a supplemental channel priority index, and allowing the supplemental channel with the highest priority index to transmit over the next frame.

摘要翻译： 一种用于选择有利的传输时隙的方法和装置，用于结合语音数据通信来传送非语音数据。 基于在基本信道上由基站发送到远程站的语音数据的发送功率电平来选择反映用于在辅助信道上发送非语音数据的有利功率电平和传输速率的时隙。 选择有利的传输时隙，而无需向基站发送关于用于补充信道的频率信道或干扰信息的远程站消息传递信息。 在无线通信系统中执行前向链路调度的方法包括：确定帧开始处的可用基站功率，在每个补充信道的帧开始处预测所需的发射功率，确定具有预测的传输可持续的速率 功率除以最近窗口的吞吐量以获得补充信道优先级索引，并允许具有最高优先级索引的补充信道在下一帧上进行传输。

公开(公告)号：US20050190718A1

公开(公告)日：2005-09-01

申请号：US10961652

申请日：2004-10-08

申请人： Jack Holtzman ,  Sandip Sarkar ,  Ahmed Saifuddin

发明人： Jack Holtzman ,  Sandip Sarkar ,  Ahmed Saifuddin

IPC分类号： H04B7/005 ,  H04B7/26 ,  H04L1/00 ,  H04L1/16 ,  H04L1/18 ,  H04W52/22 ,  H04W52/28 ,  H04W52/48 ,  H04Q7/20 ,  H04J3/24

CPC分类号： H04L1/1819 ,  H04L1/0002 ,  H04L1/0009 ,  H04L1/1825 ,  H04L1/1845 ,  H04L1/1887 ,  H04W52/282

摘要： Methods and apparatus are presented for scheduling data packet transmissions during optimal channel conditions. In one method, data packet retransmissions are scheduled for transmission during favorable channel conditions when the target remote station is moving slowly, but are scheduled for periodic transmissions when the target is moving moderately or fast. In another method, long delays for retransmissions in a channel sensitive timing scheme are eliminated. In other methods, a combination of periodic and aperiodic retransmissions are used to achieve the desired frame error rate.

摘要翻译： 呈现用于在最佳信道条件下调度数据分组传输的方法和装置。 在一种方法中，当目标远程站缓慢移动时，在有利的信道条件期间调度数据分组重传，以便当目标移动适度或快速时被调度用于周期性传输。 在另一种方法中，消除了在信道敏感定时方案中重传的长时间延迟。 在其他方法中，使用周期性和非周期性重传的组合来实现期望的帧错误率。

公开(公告)号：US20050129063A1

公开(公告)日：2005-06-16

申请号：US11040743

申请日：2005-01-21

申请人： Leonid Razoumov ,  Jack Holtzman

发明人： Leonid Razoumov ,  Jack Holtzman

IPC分类号： H04L29/06 ,  H04L1/00 ,  H04M11/00 ,  H04W16/14 ,  H04W72/10 ,  H04W72/12 ,  H04W74/00 ,  H04J3/16

CPC分类号： H04W72/1247 ,  H04L1/0002 ,  H04L1/0018 ,  H04L1/0025 ,  H04L1/0026

摘要： A method (18) for scheduling packet data transmissions in a wireless communication system wherein a per-user Priority Function (PF) (24) is based on a channel condition indicated by a Rate Request Indicator (RRI). The method also considers fairness criteria dictated by predetermined Quality of Service (QOS) requirements. In one embodiment, the rate request indicator is a Data Rate Request (DRR). In another embodiment, the rate request indicator is Carrier-to-Interference (C/I) information. In the exemplary embodiment, the base station calculates a Priority Function (PF) for the multiple mobile users. Each PF is a function of the rate request indicator and the projected throughput of a given mobile user. The PF values allow the base station to schedule active mobile units having pending data. The scheduling produces an approximately equal share of the allocated transmission time to the multiple mobile stations.

摘要翻译： 一种用于在无线通信系统中调度分组数据传输的方法（18），其中每用户优先级功能（PF）（24）基于由速率请求指示符（RRI）指示的信道状况。 该方法还考虑了由预定的服务质量（QOS）要求所规定的公平性标准。 在一个实施例中，速率请求指示符是数据速率请求（DRR）。 在另一个实施例中，速率请求指示符是载波到干扰（C / I）信息。 在示例性实施例中，基站计算多个移动用户的优先级功能（PF）。 每个PF是速率请求指示符和给定移动用户的预计吞吐量的函数。 PF值允许基站调度具有未决数据的活动移动单元。 调度产生与多个移动站的分配的传输时间的近似相等的份额。