Session management method, network function and network system

A session management and function technology, applied in the field of communication, can solve the problems affecting the transmission of uplink services and downlink services, etc.

Pending Publication Date: 2020-04-28
CHINA MOBILE COMM LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present invention provides a session management method, network function and network system to solve the problem of affecting the transmission of uplink services and downlink services when the SMF fails

Method used

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  • Session management method, network function and network system
  • Session management method, network function and network system
  • Session management method, network function and network system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] figure 1 It is one of the flow charts of the session management method provided by Embodiment 1 of the present invention, such as figure 1 As shown, the embodiment of the present invention provides a session management method applied to UPF, including the following steps:

[0047] Step 101. When the first session management function SMF that establishes a communication connection with the UPF fails, use the second SMF as the backup of the first SMF; wherein, the first SMF and the second SMF belong to the same SMF set.

[0048] Specifically, the SMF set includes a second SMF that has the same group as the first SMF. Of course, the SMF set may also include the first SMF, which can be flexibly selected according to actual conditions, and is not limited here. The SMFs are grouped, and the SMFs belonging to the same group are included in the same SMF set. When the first SMF fails to send, other SMFs belonging to the same group as the first SMF can serve as the backup of t...

Embodiment 2

[0066] figure 2 It is one of the flow charts of the session management method provided by Embodiment 2 of the present invention, such as figure 2 As shown, the embodiment of the present invention provides a session management method applied to AMF, including the following steps:

[0067] Step 201. When the first session management function SMF establishing a communication connection with the AMF fails, use the second SMF as the backup of the first SMF; wherein, the first SMF and the second SMF belong to the same SMF set.

[0068] Specifically, the SMF set includes a second SMF that has the same group as the first SMF. Of course, the SMF set may also include the first SMF, which can be flexibly selected according to actual conditions, and is not limited here. The SMFs are grouped, and the SMFs belonging to the same group are included in the same SMF set. When the first SMF fails to send, other SMFs belonging to the same group as the first SMF can serve as the backup of the...

Embodiment 3

[0086] image 3 It is one of the flow charts of the session management method provided by Embodiment 3 of the present invention, such as image 3 As shown, the embodiment of the present invention provides a session management method applied to SMF, including the following steps:

[0087] Step 301: Send an SMF registration request message or an SMF service registration request to the NRF, where the SMF registration request message or the SMF service registration request includes the group where the SMF is located.

[0088] Before using SMF, it needs to register with NRF, that is, send SMF registration request message or SMF service registration request to NRF. The SMF registration request message or the SMF service registration request includes the group where the SMF is located, which can facilitate the NRF to include SMFs with the same group in the SMF set.

[0089] It should be noted that the second SMF included in the SMF set needs to be a normally available SMF, for exam...

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Abstract

The invention provides a session management method, a network function and a network system, and the method comprises the steps: taking a second SMF as the backup of a first SMF when the first SMF which builds communication connection with a UPF breaks down, wherein the first SMF and the second SMF belong to the same SMF set; and establishing a communication connection with the second SMF. Thus, when the first SMF fails to send, the UPF can select one second SMF from the SMF set as the backup of the first SMF and establish communication connection with the second SMF, thereby effectively ensuring that the downlink service is not interrupted due to the failure of the first SMF.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a session management method, network function and network system. Background technique [0002] Fifth generation (5 th Generation, 5G) mobile communication system, after the control plane network function (NetworkFunction, NF for short) fails, if there is a service (such as uplink service or downlink service) arriving, a series of problems will occur. For example, a user establishes a session on a session management function (Session Management Function, referred to as SMF). When the SMF fails, the downlink service arrives first, and the user plane function (User Plane Function, referred to as UPF) that establishes a session with the failed SMF cannot The downlink service is transmitted to the SMF; or, when the SMF fails, the uplink service arrives first, and the access and mobility management function (Access and Mobility Management Function, referred to as AMF) that est...

Claims

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Application Information

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IPC IPC(8): H04W24/04H04W76/19
CPCH04W24/04H04W76/19
Inventor 吴玲
Owner CHINA MOBILE COMM LTD RES INST
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