08243725 is referenced by 10 patents and cites 1 patents.

A method for implementing a fallback procedure from a packet switched (PS) radio access technology (RAT) to a circuit switched (CS) RAT is disclosed. A paging message is received at a wireless transmit/receive unit (WTRU) via the PS RAT, the paging message including a WTRU identifier and a domain indicator, wherein the domain indicator indicates whether the paging message is related to a service on the CS RAT. If the WTRU identifier in the paging message matches a stored identifier of the receiving WTRU, then a fallback procedure to the CS RAT is performed. The WTRU responds to the paging message using a CS RAT-based identifier assigned to the WTRU.

Title
Maintaining circuit switched continuity in an enhanced universal terrestrial radio access network
Application Number
12/506493
Publication Number
8243725 (B2)
Application Date
July 21, 2009
Publication Date
August 14, 2012
Inventor
Rajat P Mukherjee
San Francisco
CA, US
Behrouz Aghili
Commack
NY, US
Agent
Volpe and Koenig P C
Assignee
InterDigital Patent Holdings
DE, US
IPC
H04L 12/26
H04L 1/00
H04L 12/66
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