利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

387 条记录 (耗时 0.032 秒)

    RANDOM EARLY DETECTION OVER WIRELESS LINKS
    122.
    发明申请
    RANDOM EARLY DETECTION OVER WIRELESS LINKS 审中-公开
    通过无线链接进行随机早期检测

    公开(公告)号：US20090232002A1

    公开(公告)日：2009-09-17

    申请号：US12470643

    申请日：2009-05-22

    申请人： Lawrence R. Foore ,  Kevin P. Johnson

    发明人： Lawrence R. Foore ,  Kevin P. Johnson

    IPC分类号： H04L12/56

    CPC分类号： H04L47/10 ,  H04L47/14 ,  H04L47/29 ,  H04L47/326

    摘要： Random early detection (RED) controlled loss (i.e., discarding data packets) is determined as a function of change in processing gain assigned by a resource management system in a data network having a communications link between first and second network nodes. Rather than triggering RED controlled loss as a function of buffer levels, triggering is determined as a function of change in processing gain caused by, for example, a change in code rate, modulation technique, error (e.g., bit error rate or frame error rate), signal-to-noise ratio (SNR) or carrier-to-interference (C/I) level, or a number of traffic code channels or TDMA slots assigned to the nodes. In a wireless data network, this technique may be deployed in a base station or access terminal. A tight coupling between the physical layer and link layer is provided using this technique.

    摘要翻译： 根据具有第一和第二网络节点之间的通信链路的数据网络中的资源管理系统分配的处理增益的变化来确定随机早期检测（RED）控制丢失（即，丢弃数据分组）。 不是将RED控制的损耗触发为缓冲器电平的函数，触发被确定为由例如代码率，调制技术，错误（例如，误码率或帧错误率）引起的处理增益变化的函数 ），信噪比（SNR）或载波干扰（C / I）级别，或分配给节点的多个业务码信道或TDMA时隙。 在无线数据网络中，该技术可以部署在基站或接入终端中。 使用该技术提供物理层和链路层之间的紧密耦合。

    TECHNIQUES FOR SETTING UP TRAFFIC CHANNELS IN A COMMUNICATIONS SYSTEM
    123.
    发明申请
    TECHNIQUES FOR SETTING UP TRAFFIC CHANNELS IN A COMMUNICATIONS SYSTEM 有权
    在通信系统中设置交通信道的技术

    公开(公告)号：US20090225718A1

    公开(公告)日：2009-09-10

    申请号：US12402813

    申请日：2009-03-12

    申请人： John B. Cornett, JR. ,  Kevin P. Johnson ,  George Rodney Nelson, JR.

    发明人： John B. Cornett, JR. ,  Kevin P. Johnson ,  George Rodney Nelson, JR.

    IPC分类号： H04W72/00

    CPC分类号： H04W72/0446 ,  H04W68/00 ,  H04W72/0406 ,  H04W74/04 ,  H04W76/10

    摘要： A control channel supporting traffic control in epochs is divided into two control subchannels each being less than or equal to about a half epoch in duration and occurring serially in time. Slot allocation data may be transmitted and received independently over the subchannels. One subchannel may be used for transmitting forward slot allocation data and the other subchannel may be used for transmitting reverse slot allocation data. The channel split into two subchannels may be a paging channel. The forward and reverse slot allocation data may be transmitted between a base station processor and field unit. Forward and reverse traffic data may be staggered by at least about half an epoch. Transmission of traffic data happens within about two epochs after the assignments.

    摘要翻译： 支持时代中的交通控制的控制信道被分成两个控制子信道，每个控制子信道的持续时间小于或等于约一半的时期，并且以时间顺序发生。 时隙分配数据可以通过子信道独立发送和接收。 一个子信道可以用于发送前向时隙分配数据，而另一个子信道可以用于发送反向时隙分配数据。 分成两个子信道的信道可以是寻呼信道。 前向和反向时隙分配数据可以在基站处理器和现场单元之间传输。 正向和反向交通数据可以交错至少约一半的时期。 交通数据的传输发生在分配后大约两个时期。

    ALTERNATE CHANNEL FOR CARRYING SELECTED MESSAGE TYPES
    124.
    发明申请
    ALTERNATE CHANNEL FOR CARRYING SELECTED MESSAGE TYPES 有权
    携带选择信息类型的备选通道

    公开(公告)号：US20090175249A1

    公开(公告)日：2009-07-09

    申请号：US12400872

    申请日：2009-03-10

    申请人： Kevin L. Farley ,  James A. Proctor, JR.

    发明人： Kevin L. Farley ,  James A. Proctor, JR.

    IPC分类号： H04J3/00

    CPC分类号： H04L5/0055 ,  H04L1/1854 ,  H04W72/0446 ,  H04W76/10 ,  H04W80/10

    摘要： A method for communicating information in a base station is disclosed. A reverse link channel is allocated to be a shared acknowledgement channel for receiving acknowledgement information. Acknowledgement information associated with data payload from a field unit is then received over the shared acknowledgement channel by the base station.

    摘要翻译： 公开了一种用于在基站中传送信息的方法。 反向链路信道被分配为用于接收确认信息的共享确认信道。 然后由基站通过共享确认信道接收与来自场单元的数据有效载荷相关联的确认信息。

    Fast switching of forward link in wireless system
    127.
    发明申请
    Fast switching of forward link in wireless system 有权
    快速切换无线系统中的前向链路

    公开(公告)号：US20080056185A1

    公开(公告)日：2008-03-06

    申请号：US11978309

    申请日：2007-10-29

    申请人： Pertti Alapuranen ,  Kevin Johnson ,  Kevin Farley

    发明人： Pertti Alapuranen ,  Kevin Johnson ,  Kevin Farley

    IPC分类号： H04Q7/00

    CPC分类号： H04W72/042 ,  H04B7/2628 ,  H04W8/26 ,  H04W68/00 ,  H04W72/0446 ,  H04W72/12 ,  H04W76/10

    摘要： A technique for distributing channel allocation information in a demand access communication system. Multiple access codes are used that have a defined code repeat period or code epoch. For each such epoch duration, a schedule of assignment of traffic channels to active terminals for each epoch is determined. For each terminal designated as active during the epoch, a list of active channels for such terminal unit is assigned. Prior to the start of each epoch, a channel set up message is sent on one of the forward link channels, such as a paging channel, indicating the lists of active channels for epochs of the associated traffic channel(s) that are to follow.

    摘要翻译： 一种在需求存取通信系统中分配信道分配信息的技术。 使用具有定义的代码重复周期或代码时代的多个访问代码。 对于每个这样的历元持续时间，确定了用于每个历元的业务信道分配到活动终端的时间表。 对于在时期期间指定为活动的每个终端，分配用于这种终端单元的活动通道的列表。 在每个时期的开始之前，在诸如寻呼信道的前向链路信道之一上发送信道建立消息，该寻呼信道指示要跟随的相关业务信道的时期的活动信道的列表。

    Access point antenna for a wireless local area network
    129.
    发明授权
    Access point antenna for a wireless local area network 有权
    无线局域网接入点天线

    公开(公告)号：US07239288B2

    公开(公告)日：2007-07-03

    申请号：US10953893

    申请日：2004-09-29

    申请人： Michael J. Lynch ,  Bing Chiang

    发明人： Michael J. Lynch ,  Bing Chiang

    IPC分类号： H01Q19/10

    CPC分类号： H01Q1/2291 ,  H01Q19/32

    摘要： An access point antenna for a wireless local area network (WLAN) includes a combiner network with a feed point, a ground plane adjacent the combiner network, and a dielectric substrate adjacent the ground plane. Conductive paths are on the dielectric substrate and are coupled to the feed point. Active antenna elements extend from the dielectric substrate. Each active antenna element is coupled to a respective conductive path and is equally spaced from a common area on the dielectric substrate. A passive director antenna element extends from the dielectric substrate and is coupled to the ground plane adjacent the common area.

    摘要翻译： 用于无线局域网（WLAN）的接入点天线包括具有馈电点的组合器网络，与组合器网络相邻的接地平面以及与接地平面相邻的电介质衬底。 导电路径在电介质基片上并耦合到馈电点。 有源天线元件从电介质基片延伸。 每个有源天线元件耦合到相应的导电路径，并且与电介质基片上的公共区域等间隔开。 无源导向器天线元件从电介质基板延伸并且被耦合到邻近公共区域的接地平面。

    Techniques for correcting for phase and amplitude offsets in a MIMO radio device
    130.
    发明授权
    Techniques for correcting for phase and amplitude offsets in a MIMO radio device 失效
    用于校正MIMO无线电设备中的相位和幅度偏移的技术

    公开(公告)号：US07236750B2

    公开(公告)日：2007-06-26

    申请号：US10859255

    申请日：2004-06-02

    申请人： Chandra Vaidyanathan ,  Gary L. Sugar

    发明人： Chandra Vaidyanathan ,  Gary L. Sugar

    IPC分类号： H04B1/40

    CPC分类号： H04B7/04 ,  H01Q3/2605 ,  H04B1/0003 ,  H04B1/0475 ,  H04B1/0483 ,  H04B17/21

    摘要： Techniques to correct for phase and amplitude mismatches in a radio device in order to maintain channel symmetry when communicating with another device using MIMO radio communication techniques. Correction for the amplitude and phase mismatches among the plurality of transmitters and plurality of receivers of a device may be made at baseband using digital logic (such as in the modem) in the receiver path, the transmitter path or both paths of that device. In a device, amplitude and phase offsets are determined among the plurality of radio transmitter and radio receiver paths by measuring phase and amplitude responses when supplying a signal to a transmitter in a first antenna path of the device and coupling the radio signal from a first antenna to a second antenna path of that device where the signal is downconverted by a receiver associated with the second antenna path, and similarly coupling a signal from the second antenna path to the first antenna path. Measurements are obtained between the first antenna path and each of the other antenna paths when coupling a signal in both directions between them. Phase and amplitude offset correction values are computed from the phase and amplitude measurements during a self-calibration operation or mode of the device, and are used during a run-time operation or mode when processing the baseband transmit and/or receive signals to compensate for the phase and amplitude offsets among the plurality of transceiver paths of a device. Amplitude offset correction may not be necessary (or optional) for certain radio implementations or MIMO radio algorithms. The device may execute the self-calibration mode on device power-up, and then periodically thereafter. Self-calibration may also be performed at the factory on a device.

    摘要翻译： 用于校正无线电设备中的相位和幅度失配的技术，以便在使用MIMO无线电通信技术与另一设备通信时保持信道对称性。 在设备的多个发射机和多个接收机之间的幅度和相位不匹配的校正可以使用数字逻辑（例如在调制解调器中）在接收机路径，发射机路径或该设备的两个路径中进行。 在设备中，通过在设备的第一天线路径中向发射机提供信号并且将来自第一天线的无线电信号耦合时测量相位和幅度响应，在多个无线电发射机和无线电接收机路径中确定幅度和相位偏移 到该设备的第二天线路径，其中信号由与第二天线路径相关联的接收机下变频，并且类似地将来自第二天线路径的信号耦合到第一天线路径。 当在它们之间的两个方向上耦合信号时，在第一天线路径和每个其他天线路径之间获得测量。 在设备的自校准操作或模式期间，从相位和幅度测量中计算相位和幅度偏移校正值，并且在处理基带发射和/或接收信号的运行时操作或模式期间使用相位和振幅偏移校正值，以补偿 设备的多个收发器路径之间的相位和幅度偏移。 某些无线电实现或MIMO无线电算法可能不需要（或可选）幅度偏移校正。 设备可以在设备上电时执行自校准模式，然后定期执行。 自校准也可以在工厂在设备上进行。