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    • 5. 发明授权
    • Quasi-duplex radio system using bi-directional hole extension
    • 使用双向孔扩展的QUASI-DUPLEX无线电系统
    • US5091906A
    • 1992-02-25
    • US452929
    • 1989-12-18
    • John D. ReedWalter J. Rozanski, Jr.Charles N. Lynk, Jr.
    • John D. ReedWalter J. Rozanski, Jr.Charles N. Lynk, Jr.
    • H04W4/10H04W84/08
    • H04W84/08H04W4/10H04W76/005Y10S370/913
    • A method for interrupting a radio transmission in a quasi-duplex radio-frequency communication system. The method of the present invention includes the step of transmitting a signal (22), with periodically-occuring holes (24) therein, by a first communicatioin unit (10) to at least a second communication unit (12). The transmitted signal (12) includes an audio information portion (16) and information packets (23). Each information packet (23) specifies the time of occurence of the next hole (24). The second communication unit (12) initiates an interruption of the transmission made by the first communication unit (10) by transmitting an interrupt request signal (31) to the first communication unit (10) at a time specified by an information packet (23) received by the second communication unit (12). When the first communication unit (10) receives the interrupt request signal (31), it processes the interrupt request signal (23) to determine whether it complies with predetermined criteria. If the first communication unit determines that the interrupt request signal complies with the predetermined criteria, it transmits an acknowledgement signal allowing the second communication unit (12) to interrupt the transmission so that the second communication unit (12) may begin transmitting information to be received by at least the first communication unit (10).
    • 一种用于在准双工射频通信系统中中断无线电传输的方法。 本发明的方法包括通过第一通信单元(10)向至少第二通信单元(12)发送周期性地发生孔(24)的信号(22)的步骤。 发送信号(12)包括音频信息部分(16)和信息分组(23)。 每个信息包(23)指定下一个孔(24)的发生时间。 第二通信单元(12)通过在由信息分组(23)指定的时间向第一通信单元(10)发送中断请求信号(31)来发起由第一通信单元(10)进行的发送的中断, 由第二通信单元(12)接收。 当第一通信单元(10)接收到中断请求信号(31)时,处理中断请求信号(23)以确定其是否符合预定标准。 如果第一通信单元确定中断请求信号符合预定标准,则它发送允许第二通信单元(12)中断传输的确认信号,使得第二通信单元(12)可以开始发送要接收的信息 至少第一通信单元(10)。
    • 10. 再颁专利
    • Transmission trunk multichannel dispatch system with priority queuing
    • 具有优先级排队的传输中继多渠道调度系统
    • USRE32789E
    • 1988-11-22
    • US548793
    • 1983-11-04
    • Charles N. Lynk, Jr.James J. Mikulski
    • Charles N. Lynk, Jr.James J. Mikulski
    • H04W84/08
    • H04W84/08
    • A communication system of the type wherein a central station assigns a limited number of information channels to a requesting one of a plurality of remote stations is disclosed. The requesting station sends its identification signal along with the request signal to the central station on a signal channel. The central station classifies the requesting station in either a priority or a non-priority queue. The priority queue corresponds to those stations which are continuing an on-going interchange, whereas the nonpriority queue contains those stations which wish to initiate an interchange. Stations are prioritized in the queues on a first-in/first-out basis.The central station constantly monitors the information channels and, as channels become available, assigns the channels first to stations in the priority queue, then to nonpriority queue stations. A channel becomes "available" when the central station detects a pause, such as a momentary release of a push to talk microphone switch, in transmission of that channel. By this transmission trunking method, the system makes optimum use of the limited number of available channels.Additional central station processing provides an acknowledgement signal, which indicates that the request was received and a channel will be assigned as soon as one becomes available. Also, the identification of a requesting station is compared with an associate memory. The memory provides the identifications of all stations to whom the requesting station would transmit. Once a channel is available, it is assigned to the requesting station and to its associated stations, whereby the associated stations are notified of, and prepared for, the impending transmission.