08547969 is referenced by 5 patents and cites 8 patents.

A method and apparatus are described for providing non-packet switched service to a target radio access technology (RAT) network. A circuit switched (CS) service notification message is received by a wireless transmit/receive unit (WTRU). If the WTRU has been allocated a valid temporary mobile subscriber identity (TMSI), a paging response message including the valid TMSI is transmitted after an inter-system change is performed from a source RAT network to a target RAT network. The CS service notification message is for terminating a CS call request. The source RAT network may be a long term evolution (LTE) network, and the target RAT network may be a third generation partnership project (3GPP) network. Alternatively, if the WTRU has not been allocated a valid TMSI, a paging response message including an international mobile subscriber identity (IMSI) that identifies the WTRU is transmitted after the inter-system change.

Title
Method and apparatus for providing non-packet switched service in a target radio access technology network
Application Number
12/729775
Publication Number
8547969 (B2)
Application Date
March 23, 2010
Publication Date
October 1, 2013
Inventor
Shankar Somasundaram
London
GB
Ulises Olvera Hernandez
Kirkland
CA
Peter S Wang
East Setauket
NY, US
Behrouz Aghili
Commack
NY, US
Mahmoud Watfa
Saint Leonard
CA
Agent
Volpe and Koenig P C
Assignee
Interdigital Patent Holdings
DE, US
IPC
H04L 12/50
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