Method and apparatus for non-access stratum message processing during handover in evolved network
DCFirst Claim
1. A communication method, comprising:
- sending, by a mobility management device, a first message to a base station, the first message including a non-access stratum (NAS) message; and
sending, by the base station, a second message to the mobility management device, the second message including cause information and the NAS message, the cause information indicating the NAS message is not delivered by the base station to a user equipment because of a handover.
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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.
9 Citations
16 Claims
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1. A communication method, comprising:
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sending, by a mobility management device, a first message to a base station, the first message including a non-access stratum (NAS) message; and sending, by the base station, a second message to the mobility management device, the second message including cause information and the NAS message, the cause information indicating the NAS message is not delivered by the base station to a user equipment because of a handover. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A communication system, comprising:
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a mobility management device, configured to send a first message to a base station, the first message includes a non-access stratum (NAS) message; and the base station, configured to send a second message to the mobility management device, the second message includes cause information and the NAS message, the cause information indicates the NAS message is not delivered by the base station to a user equipment because of a handover. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification