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Frequency search method and device

A frequency search and frequency point technology, applied in the field of communication, can solve problems affecting base station performance, long detection time of FCCH, non-BCCH carrier frequency point filtering, etc., to achieve the effect of improving performance and reducing FCCH detection time

Inactive Publication Date: 2011-05-11
ZTE CORP
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Problems solved by technology

[0013] In the prior art, during the frequency search process of the base station on the frequency points in the frequency point concentration, the non-BCCH carrier frequency points are not filtered before the FCCH detection, which leads to the problem that the detection time of the FCCH is too long and affects the performance of the base station. The main purpose of the present invention is to provide a frequency search scheme to solve at least one of the above-mentioned problems

Method used

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Embodiment Construction

[0028] Functional Overview

[0029] Through the technical solution provided by the embodiment of the present invention, in the process of searching a frequency point in the frequency point set by the GSM pico base station, before performing FCCH detection on the frequency point, according to one or more predetermined durations of a received frame RSSI values ​​at multiple preset time points within a period of time are used to determine whether the frequency point is a BCCH carrier frequency point, and if so, perform FCCH detection on the frequency point.

[0030] In the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0031] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not inten...

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Abstract

The invention discloses a frequency search method and a frequency search device. The method comprises the following steps of: when a base station performs frequency search on a frequency point in a frequency point set, receiving data of one frame in a composite frame of the frequency point sent by a standard base station; before frequency correction channel (FCCH) detection, judging whether the frequency point is a broadcast control channel (BCCH) carrier frequency point according to the received signal strength indicator (RSSI) value of at least one predetermined time length of the frame, ifso, performing FCCH detection, and acquiring frequency point information of the frequency point according to the detected FCCH; otherwise, determining frequency search failure of the frequency point,forbidding executing the FCCH detection on the frequency point, and waiting for receiving the composite frame of the next frequency point. The method and the device can reduce the FCCH detection timeand improve the performance of the base station.

Description

technical field [0001] The present invention relates to the communication field, in particular to a frequency search method and device. Background technique [0002] GSM pico base station is mainly a small, short-distance picocell base station developed to solve indoor coverage. Once this kind of base station is deployed on a large scale, it will be large in number and easy to move. When the pico base station is deployed, the usage of surrounding wireless resources is completely unknown. , so this pico base station must have the function of automatic frequency planning. The process of automatic frequency planning is that the base transceiver station BTS performs a frequency search on the configured frequency point set when it is turned on, and reports the search result to the base station controller (abbreviated as BSC), and the BSC completes the operating frequency point of the base station according to the reported result. and adjacent cell parameters, etc. selection and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W48/16
CPCH04W48/16H04W48/12H04W88/08
Inventor 丁海林卢勤博张纲杨锋
Owner ZTE CORP
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