公开(公告)号：US06597922B1

公开(公告)日：2003-07-22

申请号：US09312262

申请日：1999-05-14

申请人： Fuyun Ling ,  Jack Holtzman ,  Charles E. Wheatley, III ,  Tao Chen ,  Edward G. Tiedemann ,  Gilbert Leung

发明人： Fuyun Ling ,  Jack Holtzman ,  Charles E. Wheatley, III ,  Tao Chen ,  Edward G. Tiedemann ,  Gilbert Leung

IPC分类号： H04B700

CPC分类号： H04W52/225 ,  H04W36/0094 ,  H04W52/40 ,  H04W52/42

摘要： A method and apparatus for efficient candidate frequency search while initiating a handoff in a code division multiple access communication system. The method includes when the pilot signal is transmitted by the mobile station that is power controlled to a target receive level, the traffic channel power level is increased relative to the pilot channel to improve receiver performance. An improved feature is that the received pilot received at the base station stays the same while the receiver receives extra energy in the redundant traffic symbols received to enhance the probability of correctly decoding the received frame. The base station detects the absence of the mobile station transmitted signal from the frequency of interest. If the base station is aware of the starting time and duration of the absence, it can focus its detection during this predetermined time period. The performance can be improved if the absence of the signal is spread across two frames at the frame boundary.

摘要翻译： 一种用于在码分多址通信系统中发起切换的有效候选频率​​搜索的方法和装置。 该方法包括当导频信号由被功率控制到目标接收电平的移动台发送时，业务信道功率电平相对于导频信道增加，以提高接收机性能。 改进的特征是在基站处接收到的接收到的导频保持相同，而接收机在接收到的冗余业务符号中接收到额外的能量以增强正确解码接收帧的概率。 基站从感兴趣的频率检测到不存在移动台发送的信号。 如果基站知道不存在的起始时间和持续时间，则可以在该预定时间段内集中其检测。 如果没有信号在帧边界的两个帧上扩展，则可以提高性能。

公开(公告)号：US06782277B1

公开(公告)日：2004-08-24

申请号：US09409944

申请日：1999-09-30

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： H04B138

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.

摘要翻译： 一种用于无线通信的方法和装置，其中基站通过扫描基站的覆盖区域的信号波束发送信号以向用户站发送数据。 寻址到用户站的用户数据被缓冲，直到信号波束的信号波束角允许有效的传输。 基站可以随时间改变光束扫描速度或光束辐射图的形状，以最大化系统效率和容量。

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：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：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：US08068453B2

公开(公告)日：2011-11-29

申请号：US10607423

申请日：2003-06-25

申请人： Jack Holtzman ,  Tao Chen

发明人： Jack Holtzman ,  Tao Chen

IPC分类号： H04W52/16

CPC分类号： H04W52/50 ,  H04W52/16 ,  H04W52/223 ,  H04W52/26 ,  Y10S370/913

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.

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。

公开(公告)号：US20050002348A1

公开(公告)日：2005-01-06

申请号：US10901881

申请日：2004-07-28

申请人： Jack Holtzman ,  Tao Chen ,  Leonid Razoumov

发明人： Jack Holtzman ,  Tao Chen ,  Leonid Razoumov

IPC分类号： H04B7/005 ,  H04B7/26 ,  H04J3/00

CPC分类号： H04W52/267 ,  H04W52/60

摘要： Method and apparatus for controlling transmission power in a closed loop power control system, wherein power control commands are based on the energy of the previous power control commands. In one embodiment, the method compares changes in the received energy of received power control commands against expected changes in those commands based on previously transmitted power control commands, and identifies suspicious responses to said previously transmitted power control commands. Hypothesis testing of the received power control commands is performed accordance any identified suspicious responses.

摘要翻译： 用于控制闭环功率控制系统中的发射功率的方法和装置，其中功率控制命令基于先前功率控制命令的能量。 在一个实施例中，该方法基于先前发送的功率控制命令来比较接收到的功率控制命令的接收能量的变化与这些命令中的预期变化，并且识别对先前发送的功率控制命令的可疑响应。 接收到的功率控制命令的假设检验是根据任何确定的可疑响应进行的。

公开(公告)号：US06621804B1

公开(公告)日：2003-09-16

申请号：US09414759

申请日：1999-10-07

申请人： Jack Holtzman ,  Tao Chen

发明人： Jack Holtzman ,  Tao Chen

IPC分类号： H04B700

CPC分类号： H04W52/50 ,  H04W52/16 ,  H04W52/223 ,  H04W52/26 ,  Y10S370/913

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.

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。

公开(公告)号：US20060262750A1

公开(公告)日：2006-11-23

申请号：US11417946

申请日：2006-05-03

申请人： Jay Walton ,  Mark Wallace ,  Jack Holtzman ,  Franklin Antonio

发明人： Jay Walton ,  Mark Wallace ,  Jack Holtzman ,  Franklin Antonio

IPC分类号： H04Q7/00

CPC分类号： H04W52/343 ,  H04W16/04 ,  H04W72/06

摘要： Techniques to partition and allocate the available system resources among cells in a communication system, and to allocate the resources in each cell to terminals for data transmission on the uplink. In one aspect, adaptive reuse schemes are provided wherein the available system resources may be dynamically and/or adaptively partitioned and allocated to the cells based on a number of factors such as the observed interference levels, loading conditions, system requirements, and so on. A reuse plan is initially defined and may be redefined to reflect changes in the system. In another aspect, the system resources may be partitioned such that each cell is allocated a set of channels having different performance levels. In yet another aspect, terminals in each cell are scheduled for data transmission (e.g., based on their priority or load requirements) and assigned channels based on their tolerance to interference and the channels' performance.

公开(公告)号：US20050063332A1

公开(公告)日：2005-03-24

申请号：US10972199

申请日：2004-10-22

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 ,  H04Q7/00

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.