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Network switching method, system and device and storage medium

A network switching and network technology, applied in electrical components, wireless communication and other directions, can solve the problem of unable to ensure the smoothness of network switching communication, and achieve the effect of ensuring smooth communication

Pending Publication Date: 2022-04-08
CHINA TELECOM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the prior art, the purpose of the present invention is to provide a network switching method, system, equipment and storage medium to solve the problem that the prior art cannot guarantee communication fluency during network switching

Method used

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  • Network switching method, system and device and storage medium
  • Network switching method, system and device and storage medium
  • Network switching method, system and device and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] S201, the 5G base station initiates a handover request, and the cell Direct Forwarding PathAvailability in the handover request is direct path available. In this case, both the direct forwarding mode and the indirect forwarding mode are supported. In addition, the remaining steps are the same as the standard message flow in the prior art.

[0077] S202, the PGW-C+SMF network element expands the content of the first initial cell sent by the PGW-C+SMF network element to the AMF network element in the standard message flow of the prior art according to the forwarding mode in the QoS flow forwarding mapping table , that is, for each QFI, increase its switching and forwarding mode Forwarding Path Mode. For example, the message should carry PDU Session ID=1, [(QFI=1, Forwarding Path Mode=direct), (QFI=2, Forwarding Path Mode=indirect)].

[0078] S203, the AMF network element sends a handover control message to the 5G base station. The Data forwarding tunnel info (data forw...

Embodiment 2

[0082] S301, the 5G base station initiates a handover request, and the handover request does not carry the cell Direct Forwarding PathAvailability. At this time, it shows that only indirect forwarding is supported between the 5G base station and the 4G base station. In addition, the remaining steps are the same as the standard message flow in the prior art.

[0083] S302, the PGW-C+SMF network element expands the content of the first initial cell sent by the PGW-C+SMF network element to the AMF network element in the standard message flow of the prior art according to the forwarding mode in the QoS flow forwarding mapping table , that is, for each QFI, increase its switching and forwarding mode Forwarding Path Mode. For example, the message should carry PDU Session ID=1, [(QFI=1, Forwarding Path Mode=direct), (QFI=2, Forwarding Path Mode=indirect)].

[0084] S303, because the AMF network element can obtain according to the above handover request message: the 5G base station ...

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Abstract

The invention provides a network switching method, system and device and a storage medium. The method comprises the steps that a first convergence network element constructs a QoS flow forwarding mapping table; the QoS flow forwarding mapping table comprises forwarding modes corresponding to different QoS flows; the forwarding mode is direct forwarding or indirect forwarding; the first convergence network element sends a session update message to an AMF network element according to the QoS flow forwarding mapping table; the AMF network element sends a switching confirmation message to a first network base station based on the received switching request and the session update message; the switching confirmation message comprises a first forwarding mode corresponding to each QoS flow in the PDU session; and the first network base station forwards each QoS flow in a PDU session to a second network base station in the corresponding first forwarding mode based on the switching confirmation message, according to the method and the device, the effects of differentiating QoS flow scheduling and preferentially guaranteeing the key service flow are achieved; and smooth communication in the network switching process can be ensured.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a network switching method, system, equipment and storage medium. Background technique [0002] The current 5G standard has a relatively large granularity for switching from 5G to 4G, which is generally based on the PDU session granularity, and does not have the ability to use fine-grained scheduling management. Traffic transfer between base stations is generally divided into direct forwarding and indirect forwarding. In the direct forwarding method, the 5G base station (NG-RAN) directly transmits the data to the 4G base station (E-UTRAN). It is transmitted to the 4G SGW network element, and finally to the 4G base station. [0003] This handover method cannot differentiate and schedule key QoS (Quality of Service, service quality) flows and non-key QoS flows in the same session. For some key QoS flows such as control and delay-sensitive services, and non-c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00H04W36/08H04W36/38
Inventor 王恒侯佳夏旭齐文
Owner CHINA TELECOM CORP LTD