Mobile phone AT command processing method and equipment in process of coverage loss and system switching

Abstract

The invention discloses a mobile phone AT command processing method and equipment in the process of coverage loss and system switching. The method includes the steps that after a mobile phone is started, if the mobile phone stays in a first system, a protocol stack records a current system and a backup system respectively as the first system; after covering loss occurs in the mobile phone due to the fact that signal strength is weakened or signals disappear, if AT commands are issued, an ATI module issues the AT commands into an NAS module of the first system corresponding to the backup system for processing by acquiring the backup system; when the mobile phone system is switched from the first system to a second system, after the current system and the backup system are changed into the second system by a master control module, the NAS of the first system is notified of conducting switching operation, if the AT commands are issued at the moment, the ATI module sends the AT commands to the NAS of the second system for caching, and after the switching operation is finished, the NAS of the second system processes the cached AT commands.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to an AT command processing method and device in the process of loss of coverage or system switching of a mobile phone supporting LTE, TD, and GSM standards due to poor signal strength. Background technique [0002] Compared with 3G technology, LTE (Long Term Evolution) adopts a brand-new network architecture, which reduces the number of network elements and the complexity of the signaling process. The response speed and the speed of the data plane have also been greatly improved, with the uplink data plane reaching 50M / S and the downlink data plane reaching 100M / S. [0003] With the continuous maturity of LTE technology, the acceleration of the commercial process, and the gradual promotion and application in the world, the LTE network has been widely recognized by the industry for its higher spectrum utilization and faster data rate. [0004] China Mobile's LTE trial ...

AI Technical Summary

Problems solved by technology

[0025] The present invention is used to solve the problem that when the mobile phone loses coverage under a certain standard, the access layer cannot reside in a specific standard, or when the standard switching occurs but the switching has not been completed, the standard of the access layer and the non-access layer At the same time, how to determine the technical problem of the corresponding module of which standard to send the AT command to

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