Soft handoff in a cdma cellular telephone system

Details Soft handoff in a cdma cellular telephone system Soft handoff in a cdma cellular telephone system

H - Electricity

04

Q

H04Q 9/02 (2006.01) H04B 7/15 (2006.01) H04B 7/26 (2006.01) H04B 1/707 (2006.01) H04Q 7/04 (1990.01) H04Q 7/38 (2006.01) H04Q 7/30 (2006.01)

Patent

CA 2073027

In a cellular telephone system a system for directing communi- cations between a mobile user (18) and cell-sites (12, 14, 16) as a mo- bile user (18) changes cell-site service areas. The mobile user (18) in- cludes an apparatus (40, 46) for, while in communication with an- other system user via one cell-site, determining a transition of the mobile user (18) from the cell-site service area to the service area of another cell-site. The system includes circuitry (78) responsive to the indication for coupling communications between the mobile user and the other system user via the new cell-site while the mobile user also remains in communication with the system user via the first cell-site. The system further includes apparatus (78) responsive to the coupling of the communications between the mobile user and the other system user via the new cell-site for terminating the communications between the mobile user and another system user via cell-site with communica- tions continuing between the mobile user and the system user via the new cell-site.

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