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AMF selection method, network slice selection method and AMF

A technology for network slicing and terminal equipment, applied in the field of communication, which can solve problems such as affecting the EPC system, interruption of PDU connection, and inability to serve PDN connection.

Active Publication Date: 2020-01-03
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the temporarily selected AMF may not be able to serve all the PDN connections of the terminal equipment, that is, the temporary AMF corresponding to the PGW-C+SMF to which the PDN connection belongs may not be reachable, and some PDU connections may be interrupted during the switching process.
[0008] In summary, the current choice of network slicing either affects the EPC system, or may cause some PDU connections to be interrupted during the handover process

Method used

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  • AMF selection method, network slice selection method and AMF
  • AMF selection method, network slice selection method and AMF
  • AMF selection method, network slice selection method and AMF

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Embodiment Construction

[0121] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0122] At present, there are two main methods for selecting network slices, namely, the first one: select network slices through the NSSAI provided by the terminal device; the second one: the AMF relocation method in the connection state registration process.

[0123] In the first method, the terminal device needs to associate the S-NSSAI with the default EPS bearer ID, and then the terminal device transmits the association between the S-NSSAI and the EPS bearer ID to the MME through a transparent container during the establishment of the PDN connection, and the MME then Forwarding of the transparent container to the AMF has implications for the protocols and processes of the E...

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Abstract

The invention discloses an AMF selection method, a network slice selection method and an AMF, for providing a new network slice selection method so as to ensure that all PDN connections of terminal equipment can be migrated to a 5G network as much as possible. The AMF selection method comprises the steps: a first AMF receives a relocation request message from a mobility management entity MME, therelocation request message carrying an identifier of a terminal device; the first AMF acquires subscription information of the terminal equipment according to the identifier of the terminal equipment,and the subscription information comprises information of a network slice currently accessed by the terminal equipment; and the first AMF selects a second AMF for the terminal equipment according tothe information of the network slice currently accessed by the terminal equipment.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to an AMF, a method for selecting a network slice and the AMF. Background technique [0002] See figure 1 , is a network architecture diagram of a fifth-generation mobile communication technology (5Generation, 5G) network and a long-term evolution (LongTerm Evolution, LTE) network interoperability scenario, wherein the mobility management entity (Mobility Management Entity, MME) in the LTE network and The N26 interface between the Access Control And Mobility Management Function (AMF) in the 5G network is optional. When the network supports the N26 interface, it can support the communication between the 5G network and the LTE network. In the handover, the MME and the AMF may transfer the terminal equipment, for example, the context information (context) of the user equipment (User Equipment, UE), and the context information may include the mobility context and the session con...

Claims

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Application Information

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IPC IPC(8): H04W36/00H04W36/32H04W76/11
CPCH04W36/0033H04W36/0083H04W36/32H04W76/11
Inventor 王胡成
Owner DATANG MOBILE COMM EQUIP CO LTD
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