Group list update system and method

Details Group list update system and method Group list update system and method

2011-02-01

2011-02-01

Kincaid, Lester (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C455S418000, C455S419000, C455S434000, C455S435100

Reexamination Certificate

active

07881268

ABSTRACT:
In a group list update method, a group data server signals to one or more registration servers (e.g., a SIP registration server and/or a Mobile-IP registration server), to notify the registration servers of a group list update. In turn, the next time the registration server sends a registration response to an affected wireless client station, the registration server will include in the registration response a flag indicating that an update is available (or, e.g., an indication of the current version of the group data). In response to being alerted of that updated group data is available, the recipient wireless user station will then send an update request to the group data server, and the group data server responds by conveying the group list revisions to the user station.

REFERENCES:
patent: 6975863 (2005-12-01), Miernik
patent: 6990353 (2006-01-01), Florkey et al.
patent: 2006/0111135 (2006-05-01), Gray et al.
Law Enforcement Needs Document for Packet-Based Dispatch Service, Issue 2, Jul. 20, 2004.

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