Multirate local multipoint data distribution system
    1.
    发明授权
    Multirate local multipoint data distribution system 失效
    多速本地多点数据分发系统

    公开(公告)号:US5949769A

    公开(公告)日:1999-09-07

    申请号:US541337

    申请日:1995-10-10

    摘要: A local multipoint data distribution system (10) simultaneously accommodates many communication sessions occurring at a wide variety of data rates. space surrounding cell sites (12) is partitioned into sectors (16), and the spectrum is allocated to the cell sites (12) so that adjacent sectors (16) use different spectrum portions, but the entire spectrum is reused numerous times at each cell site (12). A time diversity scheme allocates different numbers of time slots (54) to different calls. Time slot identifiers are assigned in contiguous blocks in an assigned numbering system (56). The time slot identifier assignments are translated into a counted numbering system (58) which causes the time slots (54) for any call to be distributed throughout a frame (48) and interleaved with time slots (54) assigned to other calls. Data communications use a common modulation format and a modulation order that is specifically adapted to a particular call, thus maintaining system capacity for any spatial distribution, quality requirement, and data requirement for subscriber units (14).

    摘要翻译: 本地多点数据分发系统(10)同时容纳以各种数据速率发生的许多通信会话。 空间周围的小区站点(12)被划分成扇区(16),并且频谱被分配给小区站点(12),使得相邻扇区(16)使用不同的频谱部分,但是整个频谱在每个小区被重复使用多次 场地(12)。 时间分集方案将不同数量的时隙(54)分配给不同的呼叫。 在分配的编号系统(56)中的连续块中分配时隙标识符。 时隙标识符分配被转换成计数的编号系统(58),其使得任何呼叫的时隙(54)分布在整个帧(48)中并与分配给其他呼叫的时隙(54)进行交织。 数据通信使用专用于特定呼叫的公共调制格式和调制顺序,从而维持用于用户单元(14)的任何空间分布,质量要求和数据要求的系统容量。