发明名称 |
Multipoint communication system having polling and reservation schemes |
摘要 |
In a multipoint communication system, first polling signals are sequentially and respectively transmitted to terminal stations on a broadcast channel from a central station, asking a request for reservation without waiting for a reply from the terminal stations. A reservation signal is transmitted on a multiple access channel from a terminal station requesting the reservation to the central station in response to the first polling signal addressed to it. A second polling signal is then transmitted on the broadcast channel in response to the reservation signal and the multiple access channel is reserved for a period of time variable in accordance with the reservation signal. A data signal is transmitted from the terminal station requesting the reservation on the reserved multiple access channel in response to the second polling signal.
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申请公布号 |
US4742512(A) |
申请公布日期 |
1988.05.03 |
申请号 |
US19860887003 |
申请日期 |
1986.07.18 |
申请人 |
NEC CORPORATION |
发明人 |
AKASHI, FUMIO;KOBAYASHI, KAZUTOMO;NAMIKI, JUNJI;WATANABE, KOJIRO |
分类号 |
H04B7/185;H04L12/403;H04L12/56;(IPC1-7):H04J3/16;H04J3/06 |
主分类号 |
H04B7/185 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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