Control method and device for network reselection and storage medium

Abstract

The invention provides a control method and device for network reselection and a storage medium. The method comprises the steps that an access control network element of a first system receives a registration request message sent by a terminal; the access control network element of the first system obtains network access information in the registration request message, and determines whether the first system and the second system belong to the same operator based on the network access information; and if the first system and the second system do not belong to the same operator, the access control network element of the first system sends a registration rejection message to the terminal, so that the terminal starts initial registration processing in the first system. According to the invention, the effectiveness of cross-network reselection between different network roaming operators can be improved; based on the network identifier and registration information of the access user, the user can be effectively indicated to access quickly, and the mechanism is more flexible; the operation process of cross-network reselection in a different-network roaming environment is optimized, the cross-network roaming user is controlled and guided to quickly complete network access, and the use experience of the user is improved.

Description

technical field [0001] The present invention relates to the technical field of communication, and in particular to a control method, device and storage medium for network reselection. Background technique [0002] In the standard 4G and 5G interoperability process, the target side network element queries the original side network according to the UE (User Equipment, user equipment) GUTI (Globally Unique Temporary UE Identity, Globally Unique Temporary UE Identity) to obtain context information. At present, during the deployment of 5G 700M core network inter-network roaming, operators do not open 4G (4th-Generation, fourth-generation mobile communication technology) systems and 5G (5th-Generation, fifth-generation mobile communication technology) systems The interoperable interface between them, when the user moves from the shared network 5G system to the coverage area of ​​the home network 4G system, or from the home 4G network to the shared 5G network, the network reselecti...

AI Technical Summary

Problems solved by technology

At present, during the deployment of 5G 700M core network inter-network roaming, operators do not open 4G (4th-Generation, fourth-generation mobile communication technology) systems and 5G (5th-Generation, fifth-generation mobile communication technology) systems The interoperable interface between them, when the user moves from the shared network 5G system to the coverage area of ​​the home network 4G system, or from the home 4G network to the shared 5G network, the network reselection process will be initiated, the DNS query process will be triggered, and the confirmation process will be confirmed. Whether the address of visiting AMF (Access and Mobility Management Function, access and mobility management function) or MME (Mobility Management Entity, mobile management entity) can be found to obtain user context and other information; however, cross-operator If the N26 link is unreachable, it will cause a timeout failure and extend the time for rejecting the user. When the user roams in the area of ​​the shared network 5G system and the home network 4G system, the access time is equivalent to international roaming. The user experience is poor and consumes more cross-operation Vendor Interface Resources

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