利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

24 条记录 (耗时 0.014 秒)

    Dynamic shared forward link channel for a wireless communication system
    2.
    发明申请
    Dynamic shared forward link channel for a wireless communication system 有权
    用于无线通信系统的动态共享前向链路信道

    公开(公告)号：US20050208959A1

    公开(公告)日：2005-09-22

    申请号：US10889926

    申请日：2004-07-12

    申请人： Tao Chen ,  Baaziz Achour ,  Brian Butler ,  Edward Tiedemann ,  Haitao Zhang ,  Keith Saints ,  Luca Blessent ,  Yongbin Wei

    发明人： Tao Chen ,  Baaziz Achour ,  Brian Butler ,  Edward Tiedemann ,  Haitao Zhang ,  Keith Saints ,  Luca Blessent ,  Yongbin Wei

    IPC分类号： H04W72/14 ,  H04B7/005 ,  H04L12/18 ,  H04W4/06 ,  H04W52/08 ,  H04W52/32 ,  H04W52/54 ,  H04Q7/20

    CPC分类号： H04W4/06 ,  H04L12/189 ,  H04W52/08 ,  H04W52/322 ,  H04W52/327 ,  H04W52/54 ,  H04W72/005

    摘要： A dynamic shared forward link channel (or “data” channel) is used to send multicast data to a group of wireless devices, e.g., using a common long code mask for the data channel. Reference power control (PC) bits are also sent on the data channel and used for signal quality estimation. A shared forward link control channel is used to send user-specific signaling to individual wireless devices, e.g., using time division multiplexing (TDM) and a unique long code mask for each wireless device. A shared forward link indicator channel is used to send reverse link (RL) PC bits to the wireless devices, e.g., using TDM. The data channel is jointly power controlled by all wireless devices receiving the data channel. The control and indicator channels are individually power controlled by each wireless device such that the signaling and RL PC bits sent on these channels for the wireless device are reliably received.

    摘要翻译： 使用动态共享前向链路信道（或“数据”信道）将组播数据发送到一组无线设备，例如使用用于数据信道的公共长码掩码。 参考功率控制（PC）位也在数据通道上发送并用于信号质量估计。 共享的前向链路控制信道用于向各个无线设备发送用户特定的信令，例如对于每个无线设备使用时分多路复用（TDM）和唯一的长码掩码。 共享的前向链路指示符信道用于向无线设备发送反向链路（RL）PC比特，例如使用TDM。 数据通道由接收数据通道的所有无线设备共同供电控制。 控制和指示器通道由每个无线设备单独进行功率控制，使得在这些信道上为无线设备发送的信令和RL PC位被可靠地接收。

    Method and apparatus for coding in a telecommunications system
    3.
    发明授权
    Method and apparatus for coding in a telecommunications system 有权
    用于在电信系统中编码的方法和装置

    公开(公告)号：US08050361B2

    公开(公告)日：2011-11-01

    申请号：US11564770

    申请日：2006-11-29

    申请人： Stein Lundby ,  Keith Saints

    发明人： Stein Lundby ,  Keith Saints

    IPC分类号： H03K9/00 ,  H04L27/06 ,  H04L27/14 ,  H04L27/22

    CPC分类号： H04L1/0068 ,  H04B1/707 ,  H04L1/0041 ,  H04L1/02 ,  H04L25/14 ,  H04W36/06 ,  H04W36/18 ,  H04W52/20 ,  H04W52/40

    摘要： First and second transmission links are established with a remote station. An information signal is encoded to provide an encoded information signal having more bits than the information signal. First and second transmission signals are provided wherein each transmission signal has bits selected from the encoded information signal. Each of the first and second transmission signals is transmitted to the remote station by way of a respective one of the first and second transmission links. The remote station receives and combines the first and second transmission signals transmitted by the remote station to provide a combined encoded signal. The combined encoded signal is decoded by the remote station to provide the information signal. The first and second transmission links can be formed between the remote station and a single base station or between the remote station and two separate base stations.

    摘要翻译： 第一和第二传输链路与远程站建立。 信息信号被编码以提供具有比信息信号多的位的编码信息信号。 提供了第一和第二传输信号，其中每个传输信号具有从编码信息信号中选择的位。 第一和第二传输信号中的每一个通过第一和第二传输链路中的相应一个传输到远程站。 远程站接收并组合由远程站发送的第一和第二传输信号以提供组合的编码信号。 组合的编码信号由远程站解码以提供信息信号。 第一和第二传输链路可以在远程站和单个基站之间或者在远程站和两个单独的基站之间形成。

    Method and apparatus for adjusting power control setpoint in a wireless communication system
    4.
    发明授权
    Method and apparatus for adjusting power control setpoint in a wireless communication system 失效
    用于在无线通信系统中调整功率控制设定点的方法和装置

    公开(公告)号：US07643842B2

    公开(公告)日：2010-01-05

    申请号：US10889808

    申请日：2004-07-12

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

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

    IPC分类号： H04B1/16 ,  H04W52/18

    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。

    Method and apparatus for controlling transmission power while in soft handoff
    6.
    发明授权
    Method and apparatus for controlling transmission power while in soft handoff 有权

    公开(公告)号：US06512925B1

    公开(公告)日：2003-01-28

    申请号：US09204803

    申请日：1998-12-03

    申请人： Tao Chen ,  Jack M. Holtzman ,  Leonid Razoumov ,  Shim Patel ,  Keith Saints ,  Edward G. Tiedemann, Jr.

    发明人： Tao Chen ,  Jack M. Holtzman ,  Leonid Razoumov ,  Shim Patel ,  Keith Saints ,  Edward G. Tiedemann, Jr.

    IPC分类号： H04Q722

    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. In the third exemplary embodiment, the transmitters send the control unit a message indicative of the transmit power of transmissions to the receiver. The control unit determines the aligned transmit power based on the current transmit power.

    Time-tracking for clustered demodulation elements in a spread spectrum system
    8.
    发明授权
    Time-tracking for clustered demodulation elements in a spread spectrum system 有权
    用于扩频系统中的聚类解调元件的时间跟踪

    公开(公告)号：US07688882B2

    公开(公告)日：2010-03-30

    申请号：US11839504

    申请日：2007-08-15

    申请人： Roland R. Rick ,  Shimman Patel ,  Keith Saints ,  Haitao Zhang

    发明人： Roland R. Rick ,  Shimman Patel ,  Keith Saints ,  Haitao Zhang

    IPC分类号： H04B1/00

    CPC分类号： H04B1/7085 ,  H04B1/7117 ,  H04B7/0697

    摘要： An apparatus, such as a subscriber unit or a base station within a spread spectrum communication system, provides advanced control over the time-tracking of demodulation elements when unresolvable multipath situations arise. The apparatus provides merge protection that prevents clustered demodulation elements from contracting beyond a minimum time span. In addition, the apparatus provides a master/slave feature for synchronizing the time-tracking of the demodulation elements when clustered around a multipath signal.

    摘要翻译： 在扩展频谱通信系统中的诸如用户单元或基站之类的装置在不可解决的多径情况出现时提供对解调元件的时间跟踪的高级控制。 该装置提供合并保护，防止聚集的解调元件超出最小时间间隔。 此外，该设备提供主/从功能，用于在聚集在多路径信号周围时同步解调元件的时间跟踪。

    METHOD AND APPARATUS FOR CODING IN A TELECOMMUNICATIONS SYSTEM
    9.
    发明申请
    METHOD AND APPARATUS FOR CODING IN A TELECOMMUNICATIONS SYSTEM 有权
    电信系统中编码的方法与装置

    公开(公告)号：US20070086545A1

    公开(公告)日：2007-04-19

    申请号：US11564770

    申请日：2006-11-29

    申请人： Stein Lundby ,  Keith Saints

    发明人： Stein Lundby ,  Keith Saints

    IPC分类号： H04L27/00

    CPC分类号： H04L1/0068 ,  H04B1/707 ,  H04L1/0041 ,  H04L1/02 ,  H04L25/14 ,  H04W36/06 ,  H04W36/18 ,  H04W52/20 ,  H04W52/40

    摘要： First and second transmission links are established with a remote station. An information signal is encoded to provide an encoded information signal having more bits than the information signal. First and second transmission signals are provided wherein each transmission signal has bits selected from the encoded information signal. Each of the first and second transmission signals is transmitted to the remote station by way of a respective one of the first and second transmission links. The remote station receives and combines the first and second transmission signals transmitted by the remote station to provide a combined encoded signal. The combined encoded signal is decoded by the remote station to provide the information signal. The first and second transmission links can be formed between the remote station and a single base station or between the remote station and two separate base stations.

    摘要翻译： 第一和第二传输链路与远程站建立。 信息信号被编码以提供具有比信息信号多的位的编码信息信号。 提供了第一和第二传输信号，其中每个传输信号具有从编码信息信号中选择的位。 第一和第二传输信号中的每一个通过第一和第二传输链路中的相应一个传输到远程站。 远程站接收并组合由远程站发送的第一和第二传输信号以提供组合的编码信号。 组合的编码信号由远程站解码以提供信息信号。 第一和第二传输链路可以在远程站和单个基站之间或者在远程站和两个单独的基站之间形成。

    Method for coding in a telecommunications system
    10.
    发明授权
    Method for coding in a telecommunications system 有权

    公开(公告)号：US06560292B1

    公开(公告)日：2003-05-06

    申请号：US09547824

    申请日：2000-04-07

    申请人： Stein Lundby ,  Keith Saints

    发明人： Stein Lundby ,  Keith Saints

    IPC分类号： H04L2700

    CPC分类号： H04L1/0068 ,  H04B1/707 ,  H04L1/0041 ,  H04L1/02 ,  H04L25/14 ,  H04W36/06 ,  H04W36/18 ,  H04W52/20 ,  H04W52/40

    摘要： A method is taught for improving the transmission of information signals in a communications system having a base station and a remote station. First and second transmission links are established with the remote station. An information signal is encoded to provide an encoded information signal having more bits than the information signal. First and second transmission signals are provided wherein each transmission signal has bits selected from the encoded information signal. Each of the first and second transmission signals is transmitted to the remote station by way of a respective one of the first and second transmission links. The remote station receives and combines the first and second transmission signals transmitted by the remote station to provide a combined encoded signal. The combined encoded signal is decoded by the remote station to provide the information signal. The first and second transmission links can be formed between the remote station and a single base station or between the remote station and two separate base stations.