Completely redundant communication system utilizing radiating tr

Details Completely redundant communication system utilizing radiating tr Completely redundant communication system utilizing radiating tr

1994-12-22

1997-09-16

Pham, Chi H.

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

455 14, 455 671, 333237, H04B 302

Patent

active

056690657

ABSTRACT:
A radio frequency communication system utilizing a radiating transmission line is disclosed. During normal operation, a mobile communication unit near the radiating transmission line can communicate with other mobile communication units near the transmission line as well as with the base station. The communication system is redundant in that if a portion of the communication system fails such that communication signals cannot be communicated through the fault the communication system will continue to operate and communication signals from any mobile communication units near the radiating transmission line will be transmitted and received from the base station. The communication system is particularly suited for use in underground mines in which event the base station can be located at the surface, and the mobile communication units are generally located in the mine shafts.

REFERENCES:
patent: 4012662 (1977-03-01), Martin
patent: 4476574 (1984-10-01), Struven
patent: 4593154 (1986-06-01), Takeda
patent: 4866732 (1989-09-01), Carey et al.
patent: 5187803 (1993-02-01), Sohner et al.
patent: 5230080 (1993-07-01), Fabre et al.
patent: 5278989 (1994-01-01), Burke et al.
Morgan, Michael A., and Sohner, Harold K., "A Radio Communications System for the English Channel Tunnel", in IEEE Transactions and Communication Technology, 1989, pp. 368 to 374.

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