06898436 is referenced by 81 patents and cites 24 patents.

A method and apparatus for joining a user to a call in a group communication network provides for receiving an indication from a user who wishes to initiate a group call and sending a request to a server to add the user to the group call if the group call is in progress. The method and apparatus also provides for receiving a response from the server indicating that the group call is in progress, alerting the user of being added to the group call, and receiving media from the server after a traffic channel is re-established. 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.

Title
Communication device for joining a user to a group call in a group communication network
Application Number
10/76848
Publication Number
6898436 (B2)
Application Date
February 14, 2002
Publication Date
May 24, 2005
Inventor
Mark Maggenti
Del Mar
CA, US
Eric C Rosen
Solana Beach
CA, US
Douglas M Crockett
San Diego
CA, US
Agent
John L Ciccozzi
Robert J O Connell
Philip R Wadsworth
Assignee
Qualcomm Incorporated
CA, US
IPC
H04L 012/00
H04Q 007/22
H04Q 007/22
H04Q 007/20
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