Frequency sweeping method and device of user terminal

Abstract

The invention discloses a frequency sweeping method of a user terminal and a frequency sweeping device of the user terminal. The frequency sweeping method of the user terminal comprises the following steps that: when historical valid frequency points in all frequency bands to be searched are invalid frequency points, valid frequency points are searched in each frequency band to be searched sequentially according to preset search priority; and one valid frequency point in valid frequency points of a frequency band to be searched in which a first valid frequency point is searched is selected as a current valid frequency point. Compared with the prior art, the frequency sweeping method and device of the user terminal provided by the invention can shorten the frequency sweeping time of the user terminal and the frequency sweeping efficiency of the user terminal.

Description

technical field [0001] The present application relates to mobile communication technology, and in particular to a method and device for frequency scanning of a user terminal. Background technique [0002] When the user terminal performs frequency scanning in the public land mobile network (Public Land Mobile Network, PLMN) for the first time, the user terminal searches for valid frequency points in the frequency band supported by itself according to the preset frequency scanning order and frequency scanning interval, that is, When the received signal strength indication (Received Signal Strength Indication, RSSI) measurement value is greater than the frequency points of the preset threshold, when the user terminal searches for valid frequency points, the user terminal will select one of the valid frequency points to camp on. In addition, in order for the user terminal to quickly search for effective frequency points whose measured RSSI value is greater than the preset thresh...

AI Technical Summary

Problems solved by technology

Since the probability of finding an effective frequency point in the frequency band to be searched for which there is no historically effective frequency point is generally very low, the search of the user terminal for the above-mentioned frequency band to be searched for which there is no historically effective frequency point will take up a lot of search time, and It is difficult to search for effective frequency points, which greatly increases the frequency scanning time of the user terminal and reduces the frequency scanning efficiency of the user terminal

[0017] Furthermore, because in some frequency bands to be searched, the distribution of effective frequency points is generally relatively sparse (for example, the minimum interval is 20MHz), but in the existing frequency scanning method for user terminals, the user terminal in the above-mentioned frequency bands to be searched When searching within the range, the scanning interval used is still the minimum scanning interval of 100KHz stipulated in the existing protocol, so it will greatly increase the scanning time of the user terminal and reduce the scanning efficiency of the user terminal

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