Reduced noise interference during handoff

Details Reduced noise interference during handoff Reduced noise interference during handoff

1991-04-10

1993-08-24

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at separate stations

455 561, 455222, 379 60, H04Q 700

Patent

active

052396754

ABSTRACT:
A radiotelephone system reduces noise interference during handoff by muting the audio path of a receiver employed in a target base-station (135). After receive a handoff request message, a target base-station (135) mutes the target audio path and determines if the target audio path had been enabled by an undesired interfering signal having a common SAT. If the target audio path had been enabled by a interfering signal having a common SAT, the target base-station (135) will use the SAT and the received signal strength indication (RSSI) of the desired transmission of the subscriber (125) to enable the target audio path. Once the SAT and RSSI are present and adequate, the target audio path is enabled, the source audio path is coupled to the target audio path, and the subscriber (125) is handed off from the source base-station (130) to the target base-station (135) without a third party experiencing an objectionable noise blast.

REFERENCES:
patent: 3819872 (1974-06-01), Hamrick
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patent: 4229620 (1980-10-01), Schaible
patent: 4556760 (1985-12-01), Goldman
patent: 4654879 (1987-03-01), Goldman et al.
patent: 4696027 (1987-09-01), Bonta
patent: 4704734 (1987-11-01), Menich et al.
patent: 4932049 (1990-06-01), Lee
patent: 5001742 (1991-03-01), Wang

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