Method and device for accessing and obtaining user equipment context and user equipment identity
AssigneeHuawei Technologies Co., Ltd.
InventorXiaolong Guo
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Abstract
A method and device for accessing and obtaining UE context and UE identity are provided. The method for access includes: when a UE accesses an SAE network, judging, by a network node, whether a GUMMEI carried by the UE or an MMEGI in the GUMMEI is allocated or mapped by the SAE network; if the GUMMEI or MMEGI is allocated by the SAE network, selecting, by the network node, an MME according to the GUMMEI, or according to the MMEGI and an MMEC, or according to a PLMN-id, the MMEGI and the MMEC; and if the GUMMEI or MMEGI is mapped by the SAE network, selecting, by the network node, an MME according to an MCC, an MNC and an MMEC in the GUMMEI. Therefore, the access of the UE is achieved.
Claims11
A method for access, comprising:
- judging, by a first Mobility Management Entity (MME), whether a Global Unique Temporary Identity (GUTI) of a user equipment (UE) is allocated by a System Architecture Evolution (SAE) network or mapped from a temporary identity of a Second Generation/Third Generation (2G/3G) network;
- when the GUTI is allocated by the SAE network, transmitting, by the first MME, the GUTI to an old MME and receiving a UE context of the UE from the old MME, wherein the UE context of the UE is sent by the old MME according to the GUTI;
- or
- when the GUTI is mapped from the temporary identity of the 2G/3G network, reconstructing, by the first MME, an old Routing Area Identification (old RAI) and a Packet Temporary Mobile Subscriber Identity (P-TMSI) from the GUTI, transmitting the old RAI and the P-TMSI to an old Serving General Packet Radio Service (GPRS) Support Node (old SGSN), and receiving the UE context of the UE from the old SGSN, wherein the UE context of the UE is sent by the old SGSN based on the old RAI and the P-TMSI.
A network device, comprising a processor, a transmitter, and a receiver, wherein:
- the processor is configured to judge whether a Global Unique Temporary Identity (GUTI) of a user equipment (UE) is allocated by a System Architecture Evolution (SAE) network or mapped from a temporary identity of a Second Generation/Third Generation (2G/3G) network,
- when the processor judges that the GUTI is allocated by the SAE network, the transmitter is configured to transmit the GUTI to an old Mobility Management Entity (MME) and the receiver is configured to receive a UE context of the UE from the old MME, wherein the UE context of the UE is sent by the old MME according to the GUTI;
- and
- when the processor judges that the GUTI is mapped from the temporary identity of the 2G/3G network, the processor is configured to reconstruct an old Routing Area Identification (old RAI) and a Packet Temporary Mobile Subscriber Identity (P-TMSI) from the GUTI, the transmitter is configured to transmit the old RAI and the P-TMSI to an old Serving General Packet Radio Service (GPRS) Support Node (old SGSN), and the receiver is configured to receive the UE context of the UE from the old SGSN, wherein the UE context of the UE is sent by the old SGSN based on the old RAI and the P-TMSI.
A network system, comprising a first Mobility Management Entity (MME), an old MME, and an old Serving General Packet Radio Service (GPRS) Support Node (old SGSN), wherein:
- the first MME is configured to judge whether a Global Unique Temporary Identity (GUTI) of a user equipment (UE) is allocated by a System Architecture Evolution (SAE) network or mapped from a temporary identity of a Second Generation/Third Generation (2G/3G) network;
- the first MME is configured to transmit the GUTI to the old MME and receive a UE context of the UE from the old MME when the GUTI is allocated by the SAE network, wherein the UE context of the UE is sent by the old MME according to the GUTI;
- and
- the first MME is configured to reconstruct an old Routing Area Identification (old RAI) and a Packet Temporary Mobile Subscriber Identity (P-TMSI) from the GUTI, transmit the old RAI and the P-TMSI to the old SGSN, and receive the UE context of the UE from the old SGSN, when the GUTI is mapped from the temporary identity of the 2G/3G network, wherein the UE context of the UE is sent by the old SGSN according to based on the old RAI and the P-TMSI.
Dependencies are inferred from the claim text.