Improved multiple site communication system
First Claim
1. In a communication system of the type adapted to communicate a message substantially simultaneously between a plurality of fixed location sites having respective radio coverage areas, an arrangement for providing communication to units within said coverage areas comprising:
- first radio frequency transmission means at a first one of said sites for transmitting to units on selected ones of a first set of frequencies;
second radio frequency transmission means at a second one of said sites for transmitting on selected ones of a second set of frequencies different than said first set of frequencies, said second radio frequency transmission means having means for receiving selected ones of said first set of frequencies and means for converting selected ones of said first set of frequencies to ones of said second set of frequencies; and
control means at said first site and coupled to said first radio frequency transmission means for selecting among said first and second set of frequencies to communicate on channels at said first and second sites whereby said message may be substantially simultaneously communicated at said respective sites.
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Accused Products
Abstract
Disclosed is a communication system of the type adapted to communicate a message substantially simultaneously between a plurality of fixed location sites having respective radio coverage areas. The system has an arrangement comprising first and second radio frequency transceiver means located at respective first and second sites. The first radio frequency transceiver means is designed for operating on a first set of frequencies. The second radio frequency transceiver means is designed for operating on a respective different set of frequencies than the first set of frequencies. The second radio frequency transceiver means has means for receiving and converting the first set of frequencies to the respective different set of frequencies.
62 Citations
38 Claims
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1. In a communication system of the type adapted to communicate a message substantially simultaneously between a plurality of fixed location sites having respective radio coverage areas, an arrangement for providing communication to units within said coverage areas comprising:
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first radio frequency transmission means at a first one of said sites for transmitting to units on selected ones of a first set of frequencies; second radio frequency transmission means at a second one of said sites for transmitting on selected ones of a second set of frequencies different than said first set of frequencies, said second radio frequency transmission means having means for receiving selected ones of said first set of frequencies and means for converting selected ones of said first set of frequencies to ones of said second set of frequencies; and control means at said first site and coupled to said first radio frequency transmission means for selecting among said first and second set of frequencies to communicate on channels at said first and second sites whereby said message may be substantially simultaneously communicated at said respective sites. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. In a communicaiton system of the type adapted to communicate a message substantially simultaneously between a plurality of fixed location sites having respective radio coverage areas, an arrangement for providing communication to units within said coverage areas comprising:
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first radio frequency transmission means at a first one of said sites for transmitting, on separate frequencies, dedicated channel control information to respective sites, and for transmitting voice information to units within at least its site, on selected ones of a set of frequencies; second radio frequency transmission means at a second one of said sites for retransmitting said voice information to units located within its respective site according to said channel control information transmitted form said first radio frequency transmission means, said second site further including a plurality of radio repeaters for receiving and converting between ones of said set of frequencies and ones of a second set of frequencies different than said first set of frequencies, said second set of frequencies for said coverage area of said second site; and control means at said first site and coupled to said first radio frequency transmission means for selecting amoun said selected frequencies to communicate on channels at said first and second sites whereby said message may be communicated substantially simultaneously at said respective sites. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. In a communication system of the type adapted to communicate a message substantially simultaneously between a plurality of fixed location sites having respective radio coverage areas, an arrangement for providing communication from units within said coverage areas comprising:
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first radio frequency transmission means, and reception means at a first one of said sites for receiving from units on selected ones of a first set of frequencies; second radio frequency transmission and reception means at a second one of said sites for receiving transmission from units on selected ones of a second set of frequencies different than said first set of frequencies, said second radio frequency transmission means having means for converting said second set of frequencies to said first set of frequencies; and control means at said first site and coupled to said first radio frequency transmission means for selecting among said first and second set of frequencies to communicate on channels at said first and second sites whereby said message may be substantially simultaneously communicated at said respective sites. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. In a communication system of the type adapted to communicate a message substantially simultaneously between a plurality of fixed location sites having respective radio coverage areas, an arrangement for providing communication from units within said coverage areas comprising:
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first radio frequency transmission means and reception means at a first one of said sites for transmitting, on separate frequencies, dedicated channel control information to respective sites, and for receiving voice information from units within at least its site, on selected ones of a set of frequencies; second radio frequency reception means and transmission means at a second one of said sites for retransmitting voice information from units located within its respective site using said channel control information transmitted from said first radio frequency transmission means, said second site further including a plurality of radio repeaters for receiving and converting between ones of said set of frequencies and ones of a second set of frequencies different from said first set of frequencies, said second set of frequencies for said coverage area of said second site; and control means at said first site and coupled to said first radio frequency transmission means for selecting among said selected frequencies to communicate on channels at said first and second sites whereby said message may be communicated substantially simultaneously at said respective sites. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38)
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Specification