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    Multi-rate wireless communications system
    1.
    发明授权
    Multi-rate wireless communications system 失效
    多速率无线通信系统

    公开(公告)号：US5745480A

    公开(公告)日：1998-04-28

    申请号：US681191

    申请日：1996-07-22

    申请人： Saman Behtash ,  Christopher Flores ,  Adel Ghanem

    发明人： Saman Behtash ,  Christopher Flores ,  Adel Ghanem

    IPC分类号： H04B7/005 ,  H04J13/00 ,  H04W28/18 ,  H04W52/26 ,  H04J13/02 ,  H04Q7/34

    CPC分类号： H04W52/265 ,  H04J13/00 ,  H04W28/18 ,  H04W52/267

    摘要： A multi-rate wireless communications system that supports a plurality of distributed user terminals in full-duplex simultaneous communications with a central base station, where each user terminal is provided on demand with one of multiple bit rates at a negotiated QOS is provided. Each user is assigned a variable bit rate, a variable processing gain, a variable transmit power and a unique fixed rate spreading code, resulting in a constant bandwidth signal received at a relative power level corresponding to the negotiated QOS. This application can be applied to systems including wireless local loop and mobile cellular. By adjusting signal energy and interference energy, variable bit rates and negotiated QOS parameters can be supported. The forward link between base-station and user terminal, and the reverse link between the user terminal and base-station, can correspond to either a Frequency Division Duplexing (FDD) arrangement where the forward and reverse links occupy different carrier frequencies but overlap in time, or a Time Division Duplexing (TDD) arrangement where the forward and reverse links occupy the same carrier frequency but are in non-overlapping time intervals.

    摘要翻译： 提供了一种多速率无线通信系统，其支持与中央基站进行全双工同步通信的多个分布式用户终端，其中每个用户终端按照协商提供的QOS中的多个比特率之一按需提供。 为每个用户分配了可变比特率，可变处理增益，可变发射功率和唯一固定速率扩展码，导致在对应于协商的QOS的相对功率电平下接收的恒定带宽信号。 该应用可以应用于无线本地环路和移动蜂窝系统。 通过调整信号能量和干扰能量，可以支持可变比特率和协商的QOS参数。 基站和用户终端之间的前向链路以及用户终端与基站之间的反向链路可以对应于频分双工（FDD）布置，其中正向和反向链路占用不同的载波频率，但是在时间上重叠 ，或时分双工（TDD）布置，其中正向链路和反向链路占据相同的载波频率但处于非重叠的时间间隔。

    Method and apparatus for a wireless local area network
    2.
    发明授权
    Method and apparatus for a wireless local area network 失效
    一种用于无线局域网的方法和装置

    公开(公告)号：US5553076A

    公开(公告)日：1996-09-03

    申请号：US236588

    申请日：1994-05-02

    申请人： Saman Behtash ,  Christopher Flores ,  Adel Ghanem

    发明人： Saman Behtash ,  Christopher Flores ,  Adel Ghanem

    IPC分类号： H04L12/28 ,  H04J3/16

    CPC分类号： H04W28/26 ,  H04W4/12 ,  H04W48/08 ,  H04W56/0015 ,  H04W72/0446 ,  H04W84/12 ,  Y02B60/50

    摘要： A protocol for wireless local area network communication between a base stationary unit and a plurality of wireless terminals is disclosed. The main features of this protocol is based upon channel reservation requests by active wireless terminals. Contention is resolved and authorization is granted with data message signals transmitted by the authorized wireless terminal either immediately for asynchronous service or periodically for a time-based service. The system further provides for the base stationary unit to query the receipt of the data message signal by the wireless terminal authorized to receive the transmission. If no response signal is received, then the base stationary unit would authorize for itself transmission of the data message to relay it, either "over the air" or via wired connection to another base stationary unit in another data cell. The synchronous nature of the method provides for power saving by allowing the receiver and/or transmitter to be powered down during idle and other time slots.

    摘要翻译： 公开了一种用于基站固定单元与多个无线终端之间的无线局域网通信的协议。 该协议的主要特征是基于主动无线终端的信道预留请求。 竞争得到解决，授权由授权无线终端发送的数据消息信号立即进行异步服务或周期性地进行基于时间的服务。 该系统进一步提供基站固定单元，通过被授权接收传输的无线终端查询数据消息信号的接收。 如果没有接收到响应信号，则基站固定单元将授权本身传输数据消息以“通过空中”或通过有线连接将其中继到另一个数据信元中的另一个基站固定单元。 该方法的同步性质通过允许接收机和/或发射机在空闲和其他时隙期间断电来提供功率节省。