OPTIMIZED MOBILITY MANAGEMENT PROCEDURES USING PRE-REGISTRATION TUNNELING PROCEDURES
First Claim
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1. A method for handover (HO) in a wireless transmit receive unit (WTRU) from a source system to a target system, the WTRU including a first transceiver and a second transceiver, the method comprising:
- a first transceiver radio resource control (RRC) layer included in the first handover communicating the HO message to a second transceiver mobility management (MM) layer included in the second transceiver;
sending a cross communication including an HO acknowledgement from the second transceiver MM layer to the first transceiver RRC layer, whereby the HO acknowledgement is transmitted to the source system by the first transceiver; and
pre-registering the second transceiver by the target system prior to handover, wherein the first transceiver RRC layer cross communicates registration information from the target system to the second transceiver MM layer.
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Abstract
A method and apparatus for optimizing mobility management procedures comprises establishing a tunnel between a wireless transmit/receive unit (WTRU) and a target system core network (CN). The WTRU is handed over from a source system CN system to the target system CN.
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Citations
32 Claims
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1. A method for handover (HO) in a wireless transmit receive unit (WTRU) from a source system to a target system, the WTRU including a first transceiver and a second transceiver, the method comprising:
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a first transceiver radio resource control (RRC) layer included in the first handover communicating the HO message to a second transceiver mobility management (MM) layer included in the second transceiver; sending a cross communication including an HO acknowledgement from the second transceiver MM layer to the first transceiver RRC layer, whereby the HO acknowledgement is transmitted to the source system by the first transceiver; and pre-registering the second transceiver by the target system prior to handover, wherein the first transceiver RRC layer cross communicates registration information from the target system to the second transceiver MM layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A wireless transmit receive unit (WTRU) configured to conduct handover from a source system to a target system, the WTRU comprising:
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a first transceiver for communicating with the source system, including at least a first mobility management (MM) layer and a radio resource control (RRC) layer; and a second transceiver for communicating with the target system upon handover, including at least a second MM layer and a second RRC layer; wherein handover is conducted between the source system and the second transceiver through a cross communication link between the first RRC layer and second MM layer and the first MM layer and the second RRC layer; the cross communication link thereby establishing an handover direct tunnel between the second transceiver and target system. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification