Information transmission method, node selection method, device and equipment

A technology of information transmission and nodes, applied in the field of communication, can solve problems such as increasing network load pressure, and achieve the effect of avoiding traffic detours and reducing network load pressure

Active Publication Date: 2021-11-16
CHINA MOBILE COMM LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide an information transmission method, node selection method, device, and equipment to solve the problem in the prior art that the SGW-C node and the SMF node are independent nodes, and the corresponding user plane nodes are also independent, resulting in The problem that the network bearer pressure will be increased during the information forwarding process

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  • Information transmission method, node selection method, device and equipment
  • Information transmission method, node selection method, device and equipment
  • Information transmission method, node selection method, device and equipment

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Embodiment Construction

[0107] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0108] Such as figure 2 As shown, the embodiment of the present invention provides an information transmission method, which is applied to an AMF node with access and mobility management functions, including:

[0109] Step 21, obtaining the information of the control plane serving gateway SGW-C;

[0110] Step 22, sending the information of the control plane serving gateway SGW-C to the mobility management entity MME.

[0111] Such as image 3 As shown, the embodiment of the present invention defines the control plane co-located node (co-located node) of SGW-C and SMF (the SMF may be an intermediate SMF or an anchor SMF, which is not specifically limited here), UPF and SGW- U's user plane co-sets up a node.

[0112] In the embodiment of the present i...

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Abstract

The embodiment of the invention provides an information transmission method, a node selection method, a device and equipment. The method at an AMF node side comprises the following steps: acquiring information of a control plane serving gateway SGW-C; sending the information of the control plane serving gateway SGW-C to a mobility management entity MME; and ensuring the selection of a control plane combined node. The control plane combined node can further select a user plane service gateway SGW-U combined with the user plane function UPF. The traffic detour of an indirect forwarding tunnel between 4G and 5G user plane nodes during 5G network networking is avoided, and the network bearing pressure is relieved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an information transmission method, a node selection method, a device and equipment. Background technique [0002] In the existing 4G / 5G interoperability scheme, during the handover from 5G to 4G, the source-side AMF (Access and Mobility Management Function, access and mobility management function) initiates a pre-handover relocation request (ForwardRelocation Request) or reselection context response (Context Response), MME (MobilityManagement Entity, mobility management entity) selects a suitable SGW-C (Serving Gateway-Control, control plane service gateway) according to terminal wireless location information such as TAI (Tracking Area Identity, tracking area identification) , and the selected SGW-C is independent from the source SMF (Session Management Function, session management function) / I-SMF (intermediate SMF) node. [0003] In other words, since the node o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00H04W36/14
CPCH04W36/0011H04W36/0033H04W36/14
Inventor 李爱华
Owner CHINA MOBILE COMM LTD RES INST
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