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    • 7. 发明授权
    • Radio communication system
    • 无线通信系统
    • US4656645A
    • 1987-04-07
    • US718515
    • 1985-04-01
    • Kunio Kaneko
    • Kunio Kaneko
    • H04L1/00H04B1/74H04L1/22H04B7/02
    • H04B1/74
    • A radio communication system comprises transmitting and receiving stations, a plurality of transmission channels comprising regular and spare channels linking the stations, and a channel monitor for monitoring the status of the respective channels. When the respective transmission channels are in normal conditions, data signal is transmitted by making use of not only the regular channel but also the spare channel. On the other hand, when a failure of any one of the transmission channels is detected by the channel monitor, data signal subject to band compression is transmitted via the non-failed channel. The communication system thus configured makes it possible to effectively utilize a spare channel for effecting high quality signal transmission, while maintaining the essential function of the spare channel, this providing an improved utilization of transmission channel.
    • 无线电通信系统包括发射和接收站,包括链接站的常规和备用信道的多个传输信道以及用于监视各个信道的状态的信道监视器。 当各个传输信道处于正常状态时,通过不仅使用常规信道而且利用备用信道来发送数据信号。 另一方面,当信道监视器检测到任何一个传输信道的故障时,经由非故障信道发送经过频带压缩的数据信号。 这样构成的通信系统能够在保持备用信道的基本功能的同时有效地利用备用信道进行高质量的信号传输,从而提高传输信道的利用率。