08340023 is referenced by 7 patents and cites 7 patents.

A method and apparatus may be used to cancel a communication session. The apparatus may transmit a first message to initiate a communication session and then transmit a second message that indicates a request to cancel the communication session. If the apparatus determines that there is an ongoing Packet Switched (PS) session, the apparatus may continue the ongoing PS session on a current Radio Access Technology (RAT) without performing an intersystem change. If the apparatus receives a handover (HO) command, the apparatus may transmit a message to reject the HO command, or it may ignore the HO command.

Title
Method and apparatus for canceling a circuit switched fallback
Application Number
12/683212
Publication Number
8340023 (B2)
Application Date
January 6, 2010
Publication Date
December 25, 2012
Inventor
Shankar Somasundaram
London
GB
Behrouz Aghili
Commack
NY, US
Ulises Olvera Hernandez
Kirkland
CA
Mahmoud Watfa
Saint Leonard
CA
Agent
Volpe and Koenig P C
Assignee
InterDigital Patent Holdings
DE, US
IPC
H04W 4/00
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