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    • 8. 发明申请
    • CONTENTION RESOLUTION FOR CATV WITH REDUCED WAITING TIME VARIANCE
    • 具有降低等待时间变化的有线电视的内容分辨率
    • WO03034711A3
    • 2003-10-09
    • PCT/IB0203796
    • 2002-09-12
    • KONINKL PHILIPS ELECTRONICS NV
    • DENTENEER THEODORUS J JHEKSTRA-NOWACKA EWA BPRONK SERVERIUS P PTOLHUIZEN LUDOVICUS M G M
    • H04N7/10H04L12/28H04L12/825H04N5/00H04N7/173
    • H04L47/25H04N7/17309H04N21/2221H04N21/2385H04N21/2393H04N21/26216
    • The invention relates to a method and a system that are used during tree-search or stack contention-resolution protocols that resolve message transmission collisions between for example Cable Television stations (CaTV). The CaTV broadband data network provides two-way communication between subscriber computer systems (102, 104, 106, 110, 112, 114) and the CaTV head-end (100). In order to resolve collisions between messages sent by CaTVs a method of transmitting a plurality of messages, the plurality of messages being transmitted over a communication channel is provided. This method comprises: requesting to submit a first request for transmitting a first message of the plurality of messages and to submit a second request for transmitting a second message of the plurality of messages until there is no first collision detected between the submitted first request and the submitted second request upon receipt of the submitted first and second request. Before there is no first collision detected between the submitted first request and the submitted second request, it is requested to submit a third request for transmitting a third message of the plurality of messages and to submit a fourth request for transmitting a fourth message of the plurality of messages. However, requesting to re-submit the third request for transmitting the third message and to re-submit the fourth request for transmitting the fourth message if a second collision is detected between the submitted third request and the submitted second request upon receipt of the submitted third and second request is delayed until there is no first collision detected between the submitted first request and the submitted second request.
    • 本发明涉及在例如有线电视台(CaTV)之间解决消息传输冲突的树搜索或堆栈争用解决协议期间使用的方法和系统。 CaTV宽带数据网络在用户计算机系统(102,104,106,110,112,114)和CaTV前端(100)之间提供双向通信。 为了解决由CaTV发送的消息之间的冲突,发送多个消息的方法,提供了通过通信信道发送的多个消息。 该方法包括:请求提交发送多个消息的第一消息的第一请求,并且提交发送多个消息的第二消息的第二请求,直到在所提交的第一请求和第 在收到提交的第一和第二个请求后提交了第二个请求。 在所提交的第一请求和所提交的第二请求之间没有检测到第一冲突之前,请求提交发送多个消息的第三消息的第三请求,并且提交用于发送多个消息的第四消息的第四请求 的消息。 然而,如果在接收到提交的第三个请求之后在所提交的第三请求和所提交的第二请求之间检测到第二冲突,则请求重新提交发送第三消息的第三请求,并重新提交发送第四消息的第四请求 并且第二请求被延迟,直到在所提交的第一请求和所提交的第二请求之间没有检测到第一冲突。