Handover method, handover system, and mobility management entity

Abstract

The invention discloses a switching method and system and an MME, and relates to the technical field of communication. The method comprises that the MME receives a switching notification for switchingto 4G network from a terminal, and the switching notification carries the priorities of 5G slices accessed before terminal switching; and the MME determines a 4G special-purposed network after switching for the terminal according to the priorities of the 5G slices, correspondence between the 5G slices and the 4G special-purposed networks, and a preset switching strategy, so that a target MME execution terminal corresponding to the switched 4G special-purposed network switches to the switched 4G special-purposed network. Thus, the 5G network can be switched to the 4G network smoothly, the corresponding 4G special-purposed network can be selected for the terminal based on the priority of the 5G slices accessed before terminal switching, the service demand of the terminal is taken into consideration, and the user experience is further improved.

Description

technical field [0001] The present disclosure relates to the technical field of communications, and in particular to a handover method, a handover system, and a mobility management entity. Background technique [0002] In the 5G (5th-Generation, 5th generation mobile communication technology) system, the concept of network slicing is introduced. Each network slice can have different mobility, security, delay, reliability, and even billing methods. Better provide a wide range of connection services for all walks of life. [0003] The terminal can access multiple network slices in the 5G network at the same time, while the user can only access one dedicated network (ie network slice) in the 4G (4th-Generation, 4th generation mobile communication technology) network at the same time. [0004] Since the spectrum of 5G base stations is relatively high, it can only be covered by hotspots for a long time, so the interoperability between 5G and 4G will exist for a long time. Termi...

AI Technical Summary

Problems solved by technology

[0004] Since the spectrum of 5G base stations is relatively high, only hotspots can cover them for a long time, so the interoperability between 5G and 4G will exist for a long time

Terminals that access multiple 5G network slices at the same time can only access one dedicated network when they switch to a 4G network. There is still no solution for how to select a 4G network to switch from 5G to 4G.

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