Land mobile radio system having a cell in which mobile radios tr

Details Land mobile radio system having a cell in which mobile radios tr Land mobile radio system having a cell in which mobile radios tr

1994-06-10

1999-05-04

Vo, Nguyen

Telecommunications

Carrier wave repeater or relay system

Monitoring

455509, 455517, 455452, 455453, 455528, H04B 160, H04B 1702

Patent

active

059013419

ABSTRACT:
A land mobile radio communication system has a plurality of cell cites, each of which includes a plurality of repeaters. The mobil radios in the cell transmit and receive both data and audio. The date component of the signal is carred as low-frequency subaudible information. In operation the system determines the number of repeaters that are available. When the system has determined that more than a predetermined number of the repeaters are available, all of the repeaters are set to repeat audio and to transmit and to receive data. However, when the system determines that only the predetermined number of repeaters are available, all of the repeaters, except for the ones of the repeaters in the predetermined number, are set to repeat audio and to transmit and receive data. The ones of the repeaters in the predetermined number are set to only transmit and receive data.

REFERENCES:
patent: 4092600 (1978-05-01), Zimmerman et al.
patent: 4578815 (1986-03-01), Persinotti
patent: 4612415 (1986-09-01), Zdunek et al.
patent: 4670905 (1987-06-01), Sandros et al.
patent: 4692945 (1987-09-01), Zdunek
patent: 4701944 (1987-10-01), Howard et al.
patent: 4831373 (1989-05-01), Hess
patent: 5442809 (1995-08-01), Diaz et al.

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