System and method for efficient push-to-talk communications

Details System and method for efficient push-to-talk communications System and method for efficient push-to-talk communications

2004-11-29

2008-10-14

Anderson, Matthew D. (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

C455S519000, C455S003050, C455S090200, C455S090300, C455S455000, C455S450000, C370S296000, C370S277000, C370S342000

Reexamination Certificate

active

07437170

ABSTRACT:
A system and method are provided for efficient push-to-talk (PTT) communications in a cellular network of wireless telephones. The method comprises the steps of: receiving a PTT session initiation in a cellular wireless telephone network; identifying a plurality of common PTT session mobile stations in close proximity as a group; assigning a shared forward link channel to the group; and transmitting a PTT statement on the shared channel via the forward link. The shared channel can be a shared traffic channel or a common channel, such as a broadcast channel, forward common control channel, or paging channel. The shared forward link channel may be in either a circuit-switched or IP packet data system. Further, the shared forward link channel, in addition to including a shared forward fundamental channel, may also include a shared forward supplemental channel.

REFERENCES:
patent: 5133082 (1992-07-01), White
patent: 5887252 (1999-03-01), Noneman
patent: 6449491 (2002-09-01), Dailey
patent: 1335522 (2003-08-01), None
patent: 2290196 (1995-12-01), None
“Push-to-talk over Cellular (PoC); Architecture; PoC Release 1.0” Architecture V1.1.0, XX, XX, Aug. 2003, page Complete, XP000863835.

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