Reducing loop effects in a wireless local area network repeater
    71.
    发明申请
    Reducing loop effects in a wireless local area network repeater 有权
    减少无线局域网中继器的环路效应

    公开(公告)号:US20060041680A1

    公开(公告)日:2006-02-23

    申请号:US10530546

    申请日:2003-10-09

    Abstract: A method and apparatus are provided for operating a frequency translating repeater in a wireless local are network (WLAN) having one or more repeaters (200, 204), a network protocol for communicating between one or more base units (100) and one or more client units (104, 105). A first frequency channel may be used for receiving and transmitting, the network protocol defining multiple operating frequencies monitored to detect a transmitted signal. The signal is characterized to determine if associated with the base units. A second frequency channel selected for use by one of the repeaters for retransmission of additional signals based on the characterization.

    Abstract translation: 提供了一种用于在具有一个或多个中继器(200,204)的无线本地网络(WLAN)中操作频率转换中继器的方法和装置,用于在一个或多个基本单元(100)和一个或多个基站 客户端单元(104,105)。 第一频道可以用于接收和发射,定义被监控的多个工作频率的网络协议以检测发射信号。 信号的特征在于确定是否与基本单元相关联。 基于表征,选择用于由一个中继器用于重发附加信号的第二频道。

    Power control protocol for highly variable data rate reverse link of a wireless communication system
    72.
    发明申请
    Power control protocol for highly variable data rate reverse link of a wireless communication system 有权
    用于无线通信系统高可变数据速率反向链路的功率控制协议

    公开(公告)号:US20060034242A1

    公开(公告)日:2006-02-16

    申请号:US11250727

    申请日:2005-10-14

    Applicant: James Proctor,

    Inventor: James Proctor,

    Abstract: A technique for implementing closed loop power control in a wireless system using a modulation that requires synchronization over the radio channel, which dynamically assigns coded channels on a demand basis. The technique maintains a proper power level, even when no traffic channels are allocated, by determining a link quality metric based upon the reverse link power received. This determination is made in response to a heartbeat signal sent at a rate which is only sufficiently fast to maintain code phase lock, for example, depending upon the expected maximum rate at which the subscriber unit will travel.

    Abstract translation: 一种用于在无线系统中实现闭环功率控制的技术,其使用需要通过无线电信道进行同步的调制,其基于需求动态分配编码信道。 即使没有业务信道被分配,该技术通过基于所接收的反向链路功率确定链路质量度量来维持适当的功率电平。 该确定响应于仅以足够快的速率发送的心跳信号,以维持代码锁相,例如,取决于用户单元将要行进的预期最大速率。

    Access channel structure for wireless communication system

    公开(公告)号:US20050175071A1

    公开(公告)日:2005-08-11

    申请号:US11103202

    申请日:2005-04-11

    CPC classification number: H04L5/0046 H04B1/707 H04B2201/70701 H04L7/041

    Abstract: A technique for efficient implementation of pilot signals on a reverse link in a wireless communication system. An access channel is defined for the reverse link such that within each frame, or epoch, a portion is dedicated to sending only pilot symbols. Another portion of the frame is reserved for sending mostly data symbols; however, within this second portion of the frame, additional pilot symbols are interleaved among the data symbols. The pilot symbol or preamble portion of the access channel frame allows for efficient acquisition of the access signal at the base station, while providing a timing reference for determining the effects of multipath fading. In particular, a pilot correlation filter provides a phase estimate from the pilot symbols in the preamble portion, which is then used to decode the data symbols in the payload portion. An access acquisition portion of the receiver uses the phase estimates provided by the pilot correlation filter to process the output of a data symbol correlation filter. The additional pilot symbols embedded in the payload portion are used in a cross product operation to further resolve the effects of multipath fading.

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