发明名称 |
Wide area coverage radio communication system and method |
摘要 |
A wide area coverage radio communication system of the type adapted to relay a message substantially simultaneously from a plurality of fixed location sites to a plurality of portable or mobile units includes a plurality of repeaters at each of the sites. Each of the repeaters is arranged to transmit and receive on a respective different frequency duplex pair or channel. Control means at one of the sites senses channel availability at all of the sites and causes one repeater at each of the sites to transmit the message on its respective different frequency. Access to the system by the portable units is provided on a trunked basis through the control means.
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申请公布号 |
US4578815(A) |
申请公布日期 |
1986.03.25 |
申请号 |
US19830559122 |
申请日期 |
1983.12.07 |
申请人 |
MOTOROLA, INC. |
发明人 |
PERSINOTTI, GARY W. |
分类号 |
H04B7/26;H04W4/10;H04W84/08;(IPC1-7):H04B7/155 |
主分类号 |
H04B7/26 |
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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