A calling method and device based on csfb

Abstract

A CSFB-based calling method, comprising: registering to a 4G network on a base station and accessing a first cell; detecting a paging message delivered by the first cell, and redirecting to a 2G frequency point when the paging message delivered by the first cell is detected; receiving a call control message delivered by the first cell; marking the first cell as unavailable when the call control message is not connected, and switching to a second cell; and receiving a paging message delivered by the second cell. In addition, also disclosed is a CSFB-based calling device.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a calling method and device based on CSFB. Background technique [0002] Due to the update and development of wireless communication technology, 4G networks have been covered in most areas, and users can enjoy the fast Internet experience brought by 4G networks. In the existing LTE terminal, the data service is transmitted through the 4G network, while the voice service and short message service still need to be transmitted through the 2 / 3G network. Switched Fallback (circuit domain fallback) is a commonly used solution. Specifically, a CSFB-based terminal can only work under one network. For example, when working on a 4G network, when there is a voice call, it will return to Work on the 2 / 3G network and return to the 4G network after the voice call is over, that is to say, the 4G network and voice cannot be performed at the same time using the CSFB solution. [0003]...

AI Technical Summary

Problems solved by technology

However, the current serving cell of the terminal may have abnormal congestion, that is, there is no available circuit domain or no available signal. In this case, the caller will fail and hang up the phone actively

Moreover, when the location of the terminal remains unchanged, when the user initiates a call again, it is very likely that the current cell is still abnormally congested, that is, the call initiated by the user will fail again.

[0004] That is to say, for the existing LTE terminal under the CSFB scheme, when the serving cell where the terminal is located is congested, the calling success rate is insufficient and the user experience is poor.

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