Method and apparatus for non-access stratum message processing during handover in evolved network
First Claim
1. A method for processing a Non-access Stratum (NAS) message during a handover of a User Equipment (UE) in an evolved network, the method comprising:
- sending, by a mobility management entity (MME), a direct-transfer message to an Source-eNodeB (S-eNB) during the handover of the UE, the direct-transfer message including the NAS message;
receiving, by the MME, a reply from the S-eNB, the reply including a cause value and the NAS message, the cause value indicating the NAS message has not been sent to the UE during the handover of the UE in the evolved network.
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Abstract
A method and an apparatus for non-access stratum (NAS) message processing during handover in an evolved network are provided. The method includes the following steps. An evolved packet core (EPC) receives a message which indicates that a UE is being handed over sent by a source evolved NodeB (S-eNB), and stops sending an NAS message to the UE temporarily. The EPC receives a message which indicates that the UE returns to an S-eNB service area sent by the S-eNB. The EPC sends the NAS message to the UE through the S-eNB, if needed. With the method and the apparatus, the EPC can acquire a location of the UE in time in the case of a handover failure of the UE, a time limit of a retransmission timer is set precisely, and a specific implementation for forwarding an NAS message through an X2 interface is provided.
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Citations
4 Claims
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1. A method for processing a Non-access Stratum (NAS) message during a handover of a User Equipment (UE) in an evolved network, the method comprising:
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sending, by a mobility management entity (MME), a direct-transfer message to an Source-eNodeB (S-eNB) during the handover of the UE, the direct-transfer message including the NAS message; receiving, by the MME, a reply from the S-eNB, the reply including a cause value and the NAS message, the cause value indicating the NAS message has not been sent to the UE during the handover of the UE in the evolved network. - View Dependent Claims (2)
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3. A Mobility Management Entity (MME), comprising:
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a message sending module, configured to send a direct-transfer message to an S-eNB during a handover of a User Equipment (UE) in an evolved network, the direct-transfer message including an NAS message to be sent to the UE; a message receiving module, configured to receive a reply from the S-eNB, the reply including a cause value and the NAS message, the cause value indicating the NAS message has not been sent to the UE during the handover of the UE in the evolved network. - View Dependent Claims (4)
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Specification