System and method for handing off a cellular call with system an

Details System and method for handing off a cellular call with system an System and method for handing off a cellular call with system an

1997-12-23

2000-03-28

Tsang, Fan S.

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

455437, 455438, 455439, 455445, 455414, 455442, 370331, H04Q 720, H04Q 722, H04Q 736

Patent

active

060442719

ABSTRACT:
A cellular mobile telecommunication system includes a mobile station communicating with any one of a plurality of geographically spaced base stations, the base stations communicating with a mobile switching center to selectively determine one of the base stations to process a call with the mobile station. A handoff system hands off a cellular call with the mobile station from one base station to another base station. The handoff system includes a forward communication channel selectively associated with the one base station for transferring data from the one base station to the mobile station. The one base station is adapted to receive a command from the mobile switching center to handoff processing of the call to another base station, the command including information on capabilities of another base station. A message generator operatively associated with the one base station sends a capability change indicator to the mobile station via the forward communication channel and responds to a handoff command from the mobile switching center. The capability change indicator includes information on capabilities of the another base station relative to the one base station.

REFERENCES:
patent: 5504935 (1996-04-01), Vercauteren
patent: 5509035 (1996-04-01), Teidemann, Jr. et al.
patent: 5640414 (1997-06-01), Blakeney, II et al.
patent: 5794149 (1998-08-01), Hoo
patent: 5848063 (1998-12-01), Weaver, Jr. et al.
patent: 5854981 (1998-12-01), Wallstedt et al.
patent: 5857153 (1999-01-01), Lupien

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