Telecommunications – Transmitter and receiver at separate stations
Patent
1988-04-14
1990-07-03
Safourek, Benedict V.
Telecommunications
Transmitter and receiver at separate stations
379 63, 455 54, H04B 726
Patent
active
049397460
ABSTRACT:
A digital trunked radio repeater system provides substantial improvements in timeliness of channel acquisition and channel drop, and in reliability of critical control signalling. The system uses a much higher digital signalling rate than is typically found in prior art systems, and uses a control channel to convey digital channel request and assignment messages between the central site and mobile transceivers. The mobile radio transceivers transmit channel requests on the control channel (if no response is received, the mobile retries during a retry time window which increases in duration in dependence on the number of retries). The mobile transceiver switches to a working channel in response to an assignment message received on the control channel. Subaudible digital signals transmitted on the control channel and on active working channels allow late entry, shifting to higher priority calls, and other advanced functions. Message and transmission trunking capabilities are both present so as to maximize working channel usage without compromising channel access for high priority communications. During transmission trunking, called and calling transceivers return to the control channel after each transmission (and called transceivers may be inhibited from transmitting) but grant higher priority to calls from the other transceivers being communicated with to ensure continuity over an entire conversation. Additional functions and fault tolerant features further increase the versatility and reliability of the system.
REFERENCES:
patent: 3292178 (1966-12-01), Magnuski
patent: 3458664 (1969-07-01), Adlhoch et al.
patent: 3571519 (1971-03-01), Tsimbidis
patent: 3696210 (1972-10-01), Peterson et al.
patent: 3801956 (1974-04-01), Braun et al.
patent: 3898390 (1975-08-01), Wells et al.
patent: 3906166 (1975-09-01), Cooper et al.
patent: 3936616 (1976-02-01), DiGianfilippo
patent: 3970801 (1976-07-01), Ross et al.
patent: 4001693 (1977-01-01), Stackhouse et al.
patent: 4010327 (1977-03-01), Kobrinetz et al.
patent: 4012597 (1977-03-01), Lynk, Jr. et al.
patent: 4022973 (1977-05-01), Stackhouse
patent: 4027243 (1977-05-01), Stackhouse
patent: 4029901 (1977-06-01), Campbell
patent: 4128740 (1978-01-01), Graziano
patent: 4131849 (1978-12-01), Freeburg et al.
patent: 4184118 (1980-01-01), Cannalte et al.
patent: 4231114 (1980-10-01), Dolikian
patent: 4267593 (1981-05-01), Craiglow
patent: 4309772 (1982-01-01), Kloker et al.
patent: 4312070 (1982-01-01), Coombes et al.
patent: 4312074 (1982-01-01), Pautler et al.
patent: 4322576 (1982-03-01), Miller
patent: 4326264 (1982-04-01), Cohen et al.
patent: 4339823 (1982-07-01), Predina et al.
patent: 4347625 (1982-08-01), Williams
patent: 4360927 (1982-11-01), Bowen et al.
patent: 4369443 (1983-01-01), Giallanza et al.
patent: 4382298 (1983-05-01), Evans
patent: 4392242 (1983-07-01), Kai
patent: 4400585 (1983-08-01), Kamen et al.
patent: 4409687 (1983-10-01), Berti et al.
patent: 4418425 (1983-11-01), Fennel, Jr. et al.
patent: 4430742 (1984-02-01), Milleker et al.
patent: 4430755 (1984-02-01), Nadir et al.
patent: 4433256 (1984-02-01), Dolikian
patent: 4434323 (1984-02-01), Levine et al.
patent: 4450573 (1984-05-01), Noble
patent: 4485486 (1984-11-01), Webb et al.
patent: 4534061 (1985-08-01), Ulug
patent: 4578815 (1986-05-01), Persinotti
patent: 4649567 (1987-03-01), Childress
patent: 4658435 (1987-04-01), Childress et al.
patent: 4694473 (1987-09-01), Etoh
patent: 4698805 (1987-10-01), Sasuta et al.
patent: 4716407 (1987-12-01), Borras
patent: 4723264 (1988-02-01), Sasuta et al.
patent: 4771448 (1988-09-01), Koohgoli et al.
patent: 4811420 (1989-03-01), Avis et al.
Federal Information Processing Standards, Pub. No. 46, Data Encryption Standard, U.S. Dept. of Comm, NTIS, (5285 Port Royal Rd., Springfield, VA 22161, Jan. 1977.
"Voice and Data Transmission", Arrandondo, Teggeler and Smith, Bell Systems Technology Journal, vol. 58, No. 1, Jan. 1978, pp. 97-122.
General Electric Company
Safourek Benedict V.
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