Method for improving 3G to 2G switching success ratio

Abstract

This invention discloses a method for enhancing the successive rate of switching 3G to 2G including: a, a system compares the signal quality of current frequency with the preset triggered switch prepared threshold value, b, if the signal quality of the current frequency is lower than the prepared threshold value, a RNC triggers the switch preparation in advance to reconfigure the service can't be switched to 2G directly to that switched to 2G directly.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, and in particular, relates to the technology of switching UE (User Equipment) from 3G network to 2G network. Background technique [0002] In the early stage of 3G network laying, there is a time for transition from 2G network to 3G network, so 2G ​​network is needed as a supplement to make the coverage of the entire network wider and the system capacity higher. [0003] Such as figure 1 As shown, when the 2G network and the 3G network exist at the same time, when the UE (User Equipment user terminal) moves from the 3G coverage area to the 2G area, it needs to switch between the 2G and 3G networks. In order to ensure the continuity of the service, it is necessary to introduce the 3G / 2G handover mechanism. The key control parameters for handover from 3G to 2G systems include the parameters that trigger 3A events. The 3A event is one of the different system measurement in t...

AI Technical Summary

Problems solved by technology

[0011] Although this solution avoids the failure of handover and can also perform handover from 3G to 2G, but because the reconfiguration of the service takes too long, it is still very likely that the call will be dropped before the reconfiguration of the service is successful.

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