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    • 3. 发明授权
    • Wireless communication system and wireless terminal device using fixed
length communication frame
    • 无线通信系统和使用固定长度通信帧的无线终端设备
    • US5559804A
    • 1996-09-24
    • US230773
    • 1994-04-21
    • Eiichi AmadaYoshihiro TakiyasuTomoaki IshifujiGenichi IshiiHidehiko JusaShuichi Adachi
    • Eiichi AmadaYoshihiro TakiyasuTomoaki IshifujiGenichi IshiiHidehiko JusaShuichi Adachi
    • H04L12/28H04L12/46H04W52/02H04W74/04H04W74/08H04W84/12H04W88/08H04J3/00
    • H04W72/0406H04W8/26Y02B60/50
    • A wireless communication system includes a plurality of wireless terminals and a base station for periodically generating a fixed-length communication frame composed of an information field which includes a plurality of information slots, and first and second control fields which are arranged preceding the information field and each of which includes a plurality of time slots. Each time slot of the first control field of each communication frame is used for allowing the base station to send control data for designating a terminal which is to make the transmission or reception of data in one information slot of the information field, and each time slot of the second control field thereof is used for allowing one wireless terminal to send control data indicating a requirement for assignment of an information slot for data transmission. Each wireless terminal, when receiving control data inclusive of an address of that terminal in the i-th time slot of the first control field of each communication frame, makes the reception or transmission of data in the i-th information slot in the information field of that communication frame. When the control data is not found out in the first control field, the power source of a reception unit of the wireless terminal is turned off during a period of time until the next communication frame is generated.
    • 无线通信系统包括多个无线终端和用于周期性地生成由包括多个信息时隙的信息字段组成的固定长度通信帧的基站,以及布置在信息字段之前的第一和第二控制字段,以及 其中每一个包括多个时隙。 每个通信帧的第一控制字段的每个时隙用于允许基站发送用于指定要在信息字段的一个信息时隙中发送或接收数据的终端的控制数据,并且每个时隙 用于允许一个无线终端发送指示用于分配用于数据传输的信息时隙的要求的控制数据。 每个无线终端在每个通信帧的第一控制字段的第i个时隙中接收到包括该终端的地址的控制数据时,在信息字段中的第i个信息时隙中接收或发送数据 的通信帧。 当在第一控制字段中没有发现控制数据时,无线终端的接收单元的电源在直到生成下一个通信帧的时间段内被关闭。