Method and apparatus for CDMA-dispatch soft handoff

Details Method and apparatus for CDMA-dispatch soft handoff Method and apparatus for CDMA-dispatch soft handoff

2006-08-29

2006-08-29

To, Doris H. (Department: 2616)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C455S442000, C455S519000

Reexamination Certificate

active

07099290

ABSTRACT:
To address the need for an apparatus and method for CDMA-dispatch soft handoff, the present invention provides soft handoff to mobile stations (MSs) (120–123) in a dispatch call by sharing soft handoff information with all the MSs in the call at a base site (111). When a first MS (e.g.,120) needs to soft handoff, the identity of a soft handoff channel (135) at an adjacent base site (112) is shared with all the MSs. Thus, subsequent MSs (e.g.122) that need to soft handoff to that adjacent base site may do so without requesting a soft handoff.

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