Method for searching network and user equipment

Abstract

The embodiment of the invention discloses a network search method and a piece of user equipment. According to the method and the equipment, signal systems contained in receiving signals can be obtained. Network search is preferentially tried by the obtained signal systems. The network search dwell time is saved. The method provided by the invention comprises following steps of generating a received signal strength indicator RSSI sweep frequency oscillogram, wherein the abscissa axis of the RSSI sweep frequency oscillogram indicates serial numbers of frequency points, the ordinate axis of the indicates the RSSI values of the frequency points, and the interval between adjacent frequency points is a preset value; obtaining the rising edge and falling edge of the receiving signals in the RSSI sweep frequency oscillogram, wherein the falling edge is the falling edge corresponding to the rising edge; determining the distance between the rising edge and the falling edge; determining signal bandwidth according to the distance between the rising edge and the falling edge; identifying the signal systems according to the signal bandwidth; and trying the network search by the signal systems.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a network searching method and user equipment. Background technique [0002] For the communication system of the wireless terminal, the first thing to do when starting up is to search the network. Only the operator information matching the Subscriber Identity Module (full name in English: Subscriber Identity Module, English abbreviation: SIM) card is found, and the station is initiated. The corresponding wireless communication service can be obtained, so the performance of searching the network is very important. The search performance is mainly measured by two indicators: search speed and search coverage radius. The radius requires that the UE can still find the network in a scene where the signal is extremely weak. For users, more scenarios are requirements for the search speed, especially the search speed without prior information after leaving the original hi...

AI Technical Summary

Problems solved by technology

[0004] However, assuming that there is a strong LTE broadband signal, because the existing network search strategy adopts a fixed search process, the LTE signal standard can only be tried at the end, and a large amount of network search time will be consumed in GSM , WCDMA, TD-SCDMA and other signal systems, the time spent in the process of searching the network is too much

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