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Frequency tracking method and device

A frequency tracking and frequency point technology, applied in the field of repeaters, can solve problems such as abnormality, mobile users cannot perform data services, and cell source parameters cannot be obtained

Active Publication Date: 2014-12-10
COMBA TELECOM SYST CHINA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] From the above, it can be known that the carrier frequency selection repeater frequency tracking method in the prior art cannot obtain all the source parameters of the cell, and due to the incomplete frequency points of the cell obtained by analysis, the update of the working channel number of the repeater cannot include all The update of the frequency point leads to the inability of mobile users within the coverage area of ​​the corresponding carrier frequency selection repeater to perform data service communication and abnormal calls

Method used

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  • Frequency tracking method and device

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Embodiment 1

[0025] Embodiment 1 of the present invention proposes a frequency tracking method, such as figure 2 As shown, the specific process is as follows:

[0026] Step 201, scan each frequency point in the preset frequency band, determine all BCCH frequency points, and complete the frequency synchronization of the carrier frequency selection repeater.

[0027] Wherein, the time for scanning each frequency point in the preset frequency band can be determined by, but not limited to, the following two methods:

[0028] The first way may be to start scanning each frequency point in the preset frequency band when the channel number of the base station changes.

[0029] In the second way, the scan time can be set in advance, and each frequency point in the preset frequency band can be periodically scanned.

[0030] Preferably, in Embodiment 1 of the present invention, the above-mentioned second method is used to start the scanning mechanism to scan each frequency point in the preset freq...

Embodiment 2

[0074] Based on the first embodiment of the above method, the second embodiment of the present invention proposes a frequency tracking device, the structure of which is as follows Figure 4 shown, including:

[0075] The frequency point determination unit 401 is configured to scan each frequency point in the preset frequency band to determine the frequency point of the broadcast control channel BCCH.

[0076] Specifically, the frequency point determination unit 401 is specifically configured to scan each frequency point in the preset frequency band, and measure the average power value corresponding to each frequency point; the measured average power value corresponding to each frequency point Sorting in order from large to small; according to the sorted results, execute on the frequency points corresponding to each average power value in turn: lock the frequency point, in the system message that is judged to be received through the locked frequency point When the carrier freq...

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Abstract

The invention discloses a frequency tracking method and device. The method comprises the following steps: scanning each frequency point within a preset frequency range, and determining BCCH (broadcast channel control) frequency points; acquiring the cell allocation information under each BCCH frequency point; determining a cell corresponding to the same CI (cell identity) as the preset CI to serve as a service cell; analyzing the received system messages which are sent by a base station via the BCCH frequency point corresponding to the service cell to acquire the CA (cell allocation) list information, C0 frequency point, data service frequency point and voice service frequency point of the cell, wherein the C0 frequency point is the BCCH frequency point corresponding to the cell; and according to the determined CA list information, C0 frequency point, data service frequency point and voice service frequency point, when judging updating is needed, updating the working channel of a carrier frequency selection repeater to be the same as the signal channel of the base station. The method and device can obtain all the allocation parameters and all the frequency point information, so that all the frequency points of the carrier frequency selection repeater can be updated to ensure the normal operation of communication networks in the coverage area of the frequency points.

Description

technical field [0001] The invention relates to the technical field of repeaters, in particular to a frequency tracking method and device. Background technique [0002] With the development of mobile communication technology, the application of mobile communication has undergone tremendous changes. Mobile users not only have higher and higher requirements for communication quality, but also have an increasing demand for data communication. The huge number of mobile users and huge business demands put forward higher requirements for mobile communication networks. As a main network optimization product, the repeater has been widely used in the communication network. Among them, the carrier frequency selective repeater has the characteristics of less interference and better communication effect compared with the broadband frequency selective repeater, and is more suitable for the existing mobile communication network. The working channel number of the carrier frequency selecti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/04H04W24/08
Inventor 卢昌登钱春
Owner COMBA TELECOM SYST CHINA LTD