Communication transfer in a cellular radiotelephone system

Details Communication transfer in a cellular radiotelephone system Communication transfer in a cellular radiotelephone system

1991-08-12

1994-04-12

Kuntz, Curtis

Telephonic communications

Audio message storage, retrieval, or synthesis

455332, H04M 1100

Patent

active

053032896

ABSTRACT:
During the handoff of a mobile unit (225) between a serving or source base-site (200) and a selected target base-site, (205 or 210) the target base-site (205 or 210) is directed to tune to and monitor the mobile unit's in progress call on a serving base-site channel frequency in order to verify target cell selection immediately before the handoff. Thereafter, the mobile unit (225) is directed to tune to a selected target base-site channel by the target base-site. Next, the target base-site (205 or 210) re-tunes itself to the selected target channel frequency and continues to transmit. Upon the arrival of the mobile unit onto the selected target channel, the serving base-site channel is released.

REFERENCES:
patent: 4696027 (1987-09-01), Bonda
patent: 4765753 (1988-08-01), Schmidt
patent: 4926421 (1990-05-01), Kawano et al.
patent: 4972456 (1990-11-01), Kaczmarek et al.
patent: 5109528 (1992-04-01), Uddenfeldt
patent: 5175867 (1992-12-01), Wejke et al.

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