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118 条记录 (耗时 0.027 秒)

    Uplink pilot and signaling transmission in wireless communication systems
    112.
    发明申请
    Uplink pilot and signaling transmission in wireless communication systems 有权
    无线通信系统中的上行链路导频和信令传输

    公开(公告)号：US20050215251A1

    公开(公告)日：2005-09-29

    申请号：US11138824

    申请日：2005-05-25

    申请人： Ranganathan Krishnan ,  Rajiv Vijayan ,  Tamer Kadous

    发明人： Ranganathan Krishnan ,  Rajiv Vijayan ,  Tamer Kadous

    IPC分类号： H04B7/005 ,  H04L5/02 ,  H04L27/26 ,  H04W52/32 ,  H04Q7/20

    CPC分类号： H04W74/004 ,  H04L5/0023 ,  H04L5/0041 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/0226 ,  H04L25/0232 ,  H04L25/0248 ,  H04W52/325 ,  H04W72/0413

    摘要： Techniques to more efficiently transmit pilot and signaling on the uplink in an OFDM system. With subband multiplexing, M usable subbands in the system are partitioned into Q disjoint groups of subbands. Each subband group may be assigned to a different terminal for uplink pilot transmission. Multiple terminals may transmit simultaneously on their assigned subbands. The transmit power for the pilot may be scaled higher to attain the same total pilot energy even though S instead of M subbands are used for pilot transmission by each terminal. Pilot transmissions from the terminals are received, and a channel estimate is derived for each terminal based on the pilot received on the assigned subbands. The channel estimate comprises a response for additional subbands not included in the assigned group. Subband multiplexing may also be used for uplink signaling transmission.

    摘要翻译： 在OFDM系统中在上行链路上更有效地发送导频和信令的技术。 通过子带复用，系统中的M个可用子带被划分成Q个不相关的子带组。 每个子带组可被分配给用于上行链路导频传输的不同终端。 多个终端可以在其分配的子带上同时发送。 即使S代替M个子带用于每个终端的导频传输，导频的发射功率也可以按比例更高以获得相同的总导频能量。 接收来自终端的导频传输，并且基于在所分配的子带上接收到的导频，为每个终端导出信道估计。 信道估计包括对未分配组中的附加子带的响应。 子带复用也可以用于上行链路信令传输。

    Transmission of overhead information for reception of multiple data streams
    113.
    发明申请
    Transmission of overhead information for reception of multiple data streams 有权
    用于接收多个数据流的开销信息的传输

    公开(公告)号：US20050141475A1

    公开(公告)日：2005-06-30

    申请号：US10968702

    申请日：2004-10-18

    申请人： Rajiv Vijayan ,  Gordon Walker ,  Bruce Collins ,  Dhinakar Radhakrishnan ,  Ramaswamy Murali

    发明人： Rajiv Vijayan ,  Gordon Walker ,  Bruce Collins ,  Dhinakar Radhakrishnan ,  Ramaswamy Murali

    IPC分类号： H04W4/06 ,  H04W52/02 ,  H04Q7/20

    CPC分类号： H04W4/06 ,  H04W52/0216 ,  H04W72/005 ,  Y02D70/10

    摘要： Techniques for transmitting overhead information to facilitate efficient reception of individual data streams are described. A base station may transmit multiple data streams on multiple data channels (or MLCs). The MLCs may be transmitted at different times and on different frequency subbands. The time-frequency location of each MLC may change over time. The overhead information indicates the time-frequency location of each MLC and may be sent as “composite” and “embedded” overhead information. The composite overhead information indicates the time-frequency locations of all MLCs and is sent periodically in each super-frame. A wireless device receives the composite overhead information, determines the time-frequency location of each MLC of interest, and receives each MLC at the indicated time-frequency location. The embedded overhead information for each MLC indicates the time-frequency location of that MLC in the next super-frame and is transmitted along with the payload of the MLC in the current super-frame.

    摘要翻译： 描述了用于发送开销信息以促进单个数据流的有效接收的技术。 基站可以在多个数据信道（或MLC）上发送多个数据流。 MLC可以在不同的时间和在不同的频率子带上传输。 每个MLC的时间 - 频率位置可能随时间而变化。 开销信息指示每个MLC的时间 - 频率位置，并且可以作为“复合”和“嵌入”开销信息发送。 复合开销信息表示所有MLC的时间 - 频率位置，并且在每个超帧中周期性地发送。 无线设备接收复合开销信息，确定感兴趣的每个MLC的时间 - 频率位置，并且在指定的时间 - 频率位置接收每个MLC。 每个MLC的嵌入式开销信息指示该MLC在下一个超帧中的时间 - 频率位置，并与当前超帧中的MLC的有效载荷一起发送。

    Methods and apparatus for allocation of power to base station channels
    116.
    发明授权
    Methods and apparatus for allocation of power to base station channels 有权
    向基站信道分配电力的方法和装置

    公开(公告)号：US06678257B1

    公开(公告)日：2004-01-13

    申请号：US09669950

    申请日：2000-09-25

    申请人： Rajiv Vijayan ,  Peter J. Black ,  Eduardo A. S. Esteves

    发明人： Rajiv Vijayan ,  Peter J. Black ,  Eduardo A. S. Esteves

    IPC分类号： H04B7216

    CPC分类号： H04W52/32 ,  H04W52/325 ,  H04W52/34

    摘要： A method and apparatus that determines how much power to allocate to each of a plurality of reverse link power control (RLPC) Channels to be transmitted from a base station, based upon data rate control (DRC) messages transmitted to the base station. The DRC messages transmitted to the base station are used to determine the quality of the Forward Link over which the RLPC is to be transmitted. Even though the remote station to which the RLPC Channel is to be directed has not transmitted a DRC, the base station is capable of allocating power to the RLPC Channel based upon information provided to the base station in DRCs that were received by the base station. Accordingly, the base station can allocate power among the RLPC Channels without having received explicit information as to the quality of the Forward Link between the base station and every remote station intended to receive the information on the RLPC Channels.

    摘要翻译： 一种方法和装置，其基于发送到基站的数据速率控制（DRC）消息确定要从基站发送的多个反向链路功率控制（RLPC）信道中的每一个的分配多少功率。 发送到基站的DRC消息用于确定要发送RLPC的前向链路的质量。 即使RLPC信道要被引导的远程站没有发送DRC，基站能够基于由基站接收的在DRC中提供给基站的信息向RLPC信道分配功率。 因此，基站可以在RLPC信道之间分配功率，而没有接收到用于接收RLPC信道上的信息的基站和每个远程站之间的前向链路的质量的明确信息。