Method and system for making unlicensed priority transmissions

Details Method and system for making unlicensed priority transmissions Method and system for making unlicensed priority transmissions

1995-05-24

1998-12-15

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at separate stations

Distortion, noise, or other interference prevention,...

455 63, 455 671, 455 541, 370 691, H04B 110

Patent

active

058505962

ABSTRACT:
A first PCS unit monitors carrier activity of other PCS units in an unlicensed frequency band adjacent to a licensed frequency band used by the first PCS unit, which has a microprocessor that compiles a history table of this other carrier activity. The first PCS unit then uses the history table to transmit on the licensed frequency band an interference signal synchronized with the predicted occurrence of the other carrier activity such that the permitted sideband signals of the interference signal in the adjacent unlicensed band causes the other PCS units to stop broadcasting on the adjacent unlicensed band. The first PCS unit then begins broadcasting on both the adjacent unlicensed band and the licensed band, a message being embedded in these broadcasts to advise intended receiving PCS units that both bands are now available for communication sessions with the first PCS unit.

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