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    • 32. 发明授权
    • Method and apparatus of power control in a CDMA dispatch system
    • CDMA调度系统中功率控制的方法和装置
    • US5881368A
    • 1999-03-09
    • US660618
    • 1996-06-06
    • Matthew S. GrobYu-Dong YaoEric J. Lekven
    • Matthew S. GrobYu-Dong YaoEric J. Lekven
    • H04B7/005H04B7/26H04W52/00H04W52/32H04W68/00H04W68/02H04B1/00
    • H04W52/322H04W68/00H04W68/02Y02B60/50
    • In a dispatch system, power of the forward link broadcast channel transmitted from a base station is controlled such that the power level is the minimum necessary and such that transmission of the forward link broadcast channel is terminated if no remote unit is located within the coverage area of the base station. In addition to transmitting a forward link broadcast signal, the base station monitors an access channel. A first remote unit in the base station coverage area receives and decodes the forward link broadcast signal. The first remote unit determines a signal quality of said forward link broadcast signal. If the signal quality is unacceptable, the remote unit transmits a power request access message. The base station responds to the request by increasing the transmission power of forward link broadcast channel. If no requests are received at the base station, the forward link broadcast channel is slowly decreased to a minimum. Transmission of the forward link broadcast channel may be terminated completely.
    • 在调度系统中,控制从基站发送的前向链路广播信道的功率,使得功率电平是必需的最小值,并且如果没有远程单元位于覆盖区域内,则前向链路广播信道的传输被终止 的基站。 除了发送前向链路广播信号之外,基站监视接入信道。 基站覆盖区域中的第一远程单元接收并解码前向链路广播信号。 第一远程单元确定所述前向链路广播信号的信号质量。 如果信号质量不可接受,则远程单元发送功率请求访问消息。 基站通过增加前向链路广播信道的发送功率来响应该请求。 如果在基站没有接收到请求,则将前向链路广播信道缓慢降低到最小。 前向链路广播信道的传输可以完全终止。
    • 33. 发明授权
    • Wireless remote telemetry system
    • 无线远程遥测系统
    • US5748104A
    • 1998-05-05
    • US682819
    • 1996-07-11
    • Panayotis ArgyroudisGwain BayleyMatthew S. GrobMarc PhillipsSamir S. Soliman
    • Panayotis ArgyroudisGwain BayleyMatthew S. GrobMarc PhillipsSamir S. Soliman
    • G08C17/02H04Q7/38G08C19/04
    • G08C17/02H04Q9/00H04Q2209/50H04Q2209/60
    • A wireless remote telemetry system which uses low-cost remote communication devices operating on existing wireless communication systems in order to provide real-time reading and control of remote devices. In an embodiment applicable to utility service, consumption of electrical power among a population of customers is measured by a utility metering system having a wireless communication capability. The metering system comprises a remote metering unit which communicates with a central controller over existing wireless communication systems, such as cellular base stations, using existing communication standards. The remote metering unit transmits various messages over a shared random access channel to a central controller. The central controller transmits messages to the remote metering unit over a paging channel. The remote metering unit may operate in a half-duplex mode only. Furthermore, the remote metering unit may provide a gateway to advanced consumer services at the remote location.
    • 一种无线远程遥测系统,其使用在现有无线通信系统上操作的低成本远程通信设备,以便提供远程设备的实时读取和控制。 在适用于公共事业服务的实施例中,通过具有无线通信能力的公用事业计量系统来测量一组客户的电力消耗。 计量系统包括远程计量单元,其使用现有的通信标准,通过现有的无线通信系统(例如蜂窝基站)与中央控制器进行通信。 远程计量单元通过共享随机接入信道向中央控制器发送各种消息。 中央控制器通过寻呼信道向远程计量单元发送消息。 远程计量单元只能以半双工模式运行。 此外,远程计量单元可以向远程位置处的高级消费者服务提供网关。