A frequency band search method and device
A frequency band search and frequency band technology, applied in the field of frequency band search methods and devices, can solve the problems of doubling the search time, unable to find TD-SCDMA cells, and taking a long time to search the scene frequency band, so as to reduce robustness and search consumption. effect when
Active Publication Date: 2018-11-30
HUAWEI TECH CO LTD
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Problems solved by technology
Although there is no problem that the diversity antenna is occupied by other modes, when the user holds the TD-SCDMA main antenna of the terminal with a metal shell, if the antenna is not switched, the quality of the received TD-SCDMA signal will be poor, resulting in search Less than TD-SCDMA cell
If this happens during the TD-SCDMA frequency band search phase, it will also cause the terminal to not be able to stay in the TD-SCDMA cell where the TD-SCDMA signal quality is good.
[0006] According to the existing technology, although the frequency band search scheme is simple, it cannot intelligently identify the optimal antenna connection method, and the frequency band search in the worst scenario takes too long. Compared with a single frequency band search, the search time in the worst scenario will double, seriously affect user experience
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[0026] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0027] see first figure 2 , figure 2 It is a schematic flowchart of a frequency band search method according to an embodiment of the present invention. The frequency band search is to search whether there is a wireless communication signal in the frequency band. Such as figure 2 As shown, the frequency band search methods include:
[0028] S10: Receive time-domain signals of each evaluation frequency point among multiple evaluation frequency points in a frequency band according to the first antenna connection manner, and obtain signal strength statistics of time-domain signals of each evaluation frequency point.
[0029] Wherein, the first antenna connection mode is to search for a frequency band through the first antenna. In the first antenna connection mode, the main collection channel is connected to the first antenna, and the diversity cha...
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The invention discloses a frequency band search method and device, which are applied in the technical field of wireless communication. The method includes: receiving the time-domain signals of each evaluation frequency point in a plurality of evaluation frequency points in a frequency band according to the first antenna connection mode, and obtaining the signal strength statistics of the time-domain signals of each evaluation frequency point; Whether the signal strength statistics of the time-domain signals at the points are all less than the preset power threshold; when the signal strength statistics of the time-domain signals of multiple evaluation frequency points are all less than the preset power threshold, replace it with the second antenna connection mode to perform frequency band search again. Through the above method, the present invention can greatly reduce the time-consuming frequency band search without reducing the robustness.
Description
technical field [0001] The invention relates to the technical field of wireless communication, in particular to a frequency band search method and device. Background technique [0002] In wireless communication, a terminal (User Equipment, UE) needs to detect whether there is a Long Term Evolution (Long Term Evolution, LTE) signal in the configured frequency band when the frequency band configuration is known. If there is an LTE signal, it is necessary to further confirm which frequency points it is in, so as to try to camp on the cells of the LTE system at these frequency points. The longer the frequency band search time, the worse the user experience, and the greater the power consumption of the terminal. In order to speed up the frequency band search, the frequency band search usually adopts a sorting structure. Generally, several evaluation frequency points are selected at equal intervals in the frequency band, and each evaluation frequency point corresponds to a freque...
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IPC IPC(8): H04W48/16
CPCH04W48/16Y02D30/70
Inventor 魏璟鑫王旭
Owner HUAWEI TECH CO LTD