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Method and apparatus for providing non-packet switched service in a target radio access technology network

  • US 10,009,939 B2
  • Filed: 09/16/2013
  • Issued: 06/26/2018
  • Est. Priority Date: 03/31/2009
  • Status: Active Grant
First Claim
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1. A method, implemented by a wireless transmit/receive unit (WTRU), the method comprising:

  • receiving a circuit switched (CS) service notification message indicating an inter-system change from a source radio access technology (RAT) network to a target RAT network,wherein the CS service notification message comprises one bit that explicitly indicates an identity that the WTRU is to use after performing the inter-system change,wherein the one bit, by being set to a first value, indicates that an international mobile subscriber identity (IMSI) of the WTRU is the identity that the WTRU is to use after the inter-system change is performed, andwherein the one bit, by being set to a second value, indicates that a temporary mobile subscriber identity (TMSI) allocated for the WTRU is the identity that the WTRU is to use after the inter-system change is performed; and

    transmitting a paging response message including the identity identified by the one bit after the inter-system change is performed.

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