Push-to-talk and push-to-conference in a CDMA wireless...

Multiplex communications – Special services – Conferencing

Reexamination Certificate

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C379S202010

Reexamination Certificate

active

06982961

ABSTRACT:
A method of providing push-to-talk and push-to-conference functionality in a CDMA system. Participants, in one embodiment, may be divided into active and inactive participants with active participants assigned a private uplink/downlink channel pair by the communication system. Inactive participants may be assigned a public downlink channel. In one embodiment, silent active participants of a conference or talk session are timed out and the private uplink/downlink channel pair previously assigned to such individuals are released for use elsewhere in the network or by other members of the conference. In a push-to-talk embodiment one private uplink/downlink channel pair may at any given time be passed between the presently active members of the group.

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patent: WO0069189 (2000-11-01), None

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