利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

3 条记录 (耗时 0.022 秒)

    Time-division multiple-access communication system
    3.
    发明公开
    Time-division multiple-access communication system 失效
    Mehrfachzugriff mit Zeitverschachtelung Kommunikationsanordnung

    公开(公告)号：EP0878924A2

    公开(公告)日：1998-11-18

    申请号：EP98108467.6

    申请日：1998-05-08

    申请人： Sharp Kabushiki Kaisha ,  Hitachi, Ltd. ,  MITSUBISHI DENKI KABUSHIKI KAISHA ,  Communications Research Laboratory, Ministry of Posts and Telecommunications ,  Nippon Telegraph and Telephone Corporation ,  NTT MOBILE COMMUNICATIONS NETWORK INC. ,  YRP Mobile Telecommunications Key Technology Research Laboratories Co., Ltd.

    发明人： Onodera, Tetsuo ,  Usami, Hiroshi ,  Shibuya, Akihiro ,  Moriyama, Eimatus ,  Hamaguchi, Kiyoshi ,  Saito, Yoichi ,  Matsumoto, Tadashi ,  Mizuno, Mitsuhiko

    IPC分类号： H04B7/26

    CPC分类号： H04B7/212

    摘要： The present invention is directed to a TDMA communication system which is adapted to different communication environments or prepares different communication environments and allows each mobile station to be set for working in any one of the different communication environments. This enables the mobile terminal to conduct communications in different communication environments and at different transmission rates. An office communication environment, a walking-speed mobile-communication environment, a vehicle-running-speed mobile-communication environment and a satellite communication environment are separately constructed and connected to each other by a communication network. Each environment system has a mobile exchanging function, a base-station function with a transmitter-receiver and mobile-station function with a transmitter-receiver to realize communication therein. The communication system commonly uses a TDMA format that has a fixed frame-length and a constant number of bits for each of the slots composing the frame. The communication environments have prepared respective sets of communication conditions, each set including a transmission power, a modulating method, the number of multiplexed signals, error-correction, an antenna gain, a frequency hopping value and a diversity value. At each mobile station and each base station, one of plural sets of communication conditions for respective environments is selected to establish communication with each other under the selected environment.

    摘要翻译： 本发明涉及一种TDMA通信系统，其适于不同的通信环境或准备不同的通信环境，并且允许每个移动站被设置用于在不同通信环境中的任何一个中工作。 这使得移动终端能够在不同的通信环境中以不同的传输速率进行通信。 办公通信环境，步行速度移动通信环境，车辆行驶速度移动通信环境和卫星通信环境分别构造并通过通信网络彼此连接。 每个环境系统具有移动交换功能，具有发射机 - 接收机的基站功能和具有发射机 - 接收机的移动台功能，以实现其中的通信。 通信系统通常使用对于构成帧的每个时隙具有固定的帧长度和固定比特数的TDMA格式。 通信环境已经准备了各种通信条件，每组包括传输功率，调制方法，复用信号的数量，纠错，天线增益，跳频值和分集值。 在每个移动站和每个基站处，选择用于各个环境的多组通信条件之一，以在所选择的环境下建立彼此的通信。