Method and apparatus for providing non-packet switched service in a target radio access technology network
First Claim
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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Abstract
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.
7 Citations
15 Claims
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1. A method, implemented by a wireless transmit/receive unit (WTRU), the method comprising:
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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, and wherein 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. - View Dependent Claims (2, 3, 4, 5)
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6. A network comprising:
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a transmitter configured to transmit 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, and wherein 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 a receiver configured to receive a paging response message including the identity identified by the one bit after the inter-system change is performed. - View Dependent Claims (7, 8, 9, 10)
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11. A wireless transmit/receive unit (WTRU), the WTRU comprising:
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a receiver configured to receive a circuit switched (CS) service notification 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, and wherein 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 a transmitter configured to transmit a paging response message including the identity identified by the one bit after the inter-system change is performed. - View Dependent Claims (12, 13, 14, 15)
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Specification