Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
2005-03-29
2005-03-29
Cummins, William D. (Department: 2683)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C455S519000, C370S260000, C379S049000, C709S204000
Reexamination Certificate
active
06873854
ABSTRACT:
A method and apparatus for adding a member to an active call in a group communication network provides for receiving a member list from a user and sending a request to a server to add the member list to the active group call. The method and apparatus further provides for announcing each member in the member list that they are being added to the group call, receiving acknowledgement from a member who wishes to participate in the group call, and forwarding media to the member. The method and apparatus also provides for a significant reduction in the actual total dormancy wakeup time and latency by exchanging group call signaling even when mobiles are dormant and no traffic channel is active.
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Crockett Douglas M.
Maggenti Mark
Rosen Eric C.
Ciccozzi John
Cummins William D.
O'Connell Robert
Qualcomm Inc.
Wadsworth Philip
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