A network switching method and device

Abstract

The invention discloses a network switching method and device. The network switching method includes the steps that a mobile terminal is switched from a long term evolution (LTE) network to a 2G or 3G network; when an RAU routing area is updated or it is detected that 2G or 3G network signals change, the mobile terminal judges whether an available LTE network exits around the 2G or 3G network or not according to a stored network operator database; when judging out that the available LTE network exits around the 2G or 3G network, the mobile terminal measures signals of the available LTE network, generates a measurement report and reports the measurement report to the 2G or 3G network; the mobile terminal is switched to the LTE network according to switching instructions returned by the 2G or 3G network. The network switching method and device can improve network switching efficiency and improve service smoothness of network switching and user experience.

Description

Technical field [0001] The present invention relates to the technical field of LTE network switching, in particular to a network switching method and device. Background technique [0002] Long Term Evolution (Long Term Evolution, LTE) is the evolution of 3G and an upgrade of the GSM / UMTS standard. LTE can provide high-speed mobile communication needs, support multicast and broadcast streaming. The LTE frequency band is well expanded, supporting time division multiple access and code division multiple access frequency bands from 1.4MHZ to 20MHZ. The all-IP basic network structure, also known as the core packet network evolution, will replace the original GPRS core packet network and can provide seamless switching of voice data to the original networks such as GSM, UMTS and CDMA2000. The simplified basic network structure can save operators' network operating expenses. For example, E-UTRA can provide four times the network capacity of HSPA. The LTE network has the ability to pr...

AI Technical Summary

Problems solved by technology

Currently, when a mobile terminal resides on a 2G or 3G network, the LTE network around the 2G or 3G network will not actively send a network measurement report to the mobile terminal (mainly recording the cell coverage signal strength of the LTE network), so that the mobile terminal cannot The measurement report sent by LTE is quickly returned to the LTE network

At present, the final return of the mobile terminal to the LTE network needs to be achieved through multiple tentative starts to search for the LTE network in the surrounding neighbors, which seriously affects the efficiency of smart terminal network switching and business fluency, and reduces the experience of mobile terminal users.

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