Method of enabling terminal to automatically return to network, device and terminal

Abstract

The invention discloses a method of enabling a terminal to automatically return to a network, a device and a terminal, so as to improve the network service performance after the terminal returns to the network and ensure the network service quality. As for each PLMN, the terminal stores a frequency point list corresponding to the PLMN. The method comprises steps: when CSFB (Circuit Switch Fall Back) voice call is carried out, whether the terminal meets a high-speed movement condition is judged; if yes, according to a high-speed movement scene frequency point arrangement strategy, priority of each frequency point in the frequency point list corresponding to the PLMN before the CSFB is carried out is determined, and if not, according to a non-high-speed movement scene frequency point arrangement strategy, the priority of each frequency point in the frequency point list corresponding to the PLMN before the CSFB is carried out is determined; and after the CSFB voice call is over, according to the priority of each frequency point in the frequency point list corresponding to the PLMN before the CSFB is carried out, grouping scanning is carried out sequentially, and a cell which meets conditions is selected for residence.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, and in particular to a method, device and terminal for a terminal to autonomously return to a network. Background technique [0002] LTE (Long Term Evolution, long-term evolution), as a follow-up evolution technology of 3G (3rd Generation, third generation), is considered to be the evolution direction of the next generation of mobile communications due to its unique technical advantages such as high data rate, low delay, and flexible bandwidth configuration. However, the LTE network is based on the all-IP (Internet Protocol, Internet Protocol) architecture, and can only provide VoIP (Voiceover Internet Protocol, Internet Protocol-based) voice services based on the packet domain; considering that the continuous coverage of the LTE network is a gradual process, for To ensure the continuity of the voice service, it is necessary to support the voice switching capability from the ...

AI Technical Summary

Problems solved by technology

[0011] The existing two types of terminal autonomous return implementation methods have defects in the face of the above-mentioned complex network coverage scenarios, which cannot ensure that users can obtain a good user experience in various network environments, and meet the requirements of operators for terminal autonomous return to LTE network deployment. The expectations of the strategy are as follows: In the first type of mode, users can be guaranteed to return to the LTE network at the fastest speed in static or low-to-medium speed scenarios, but cannot always Ensure that the user can return to the cell with the best LTE signal in the location or the LTE cell that the network side expects the terminal to return to. For high-speed mobile scenarios, in order to improve network service quality, operators usually deploy high-speed dedicated networks along the high-speed rail for coverage. technology, it cannot guarantee that the terminal can access the high-speed dedicated network, so the network service performance of the terminal cannot be guaranteed, and the network service quality is reduced. Similarly, in the second type of method, it can ensure that the terminal returns to the cell with the best LTE signal in the location, but the LTE signal is the best A good cell is not necessarily the cell with the best service performance for the terminal

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