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Method and device for establishing PLMN list

A frequency point and history technology, applied in the field of communication, can solve problems affecting user experience, long PLMN list time, and inability to quickly respond to business needs, etc., to achieve the effect of improving user experience, responding to business needs quickly, and reducing search time

Inactive Publication Date: 2012-07-04
HUAWEI DEVICE CO LTD
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AI Technical Summary

Problems solved by technology

[0004] The time for establishing the PLMN list provided by the prior art is too long. According to the regulations of 3GPP 43.022, the maximum theoretical decoding number of the above-mentioned M is 140, so the maximum theoretical time of the above-mentioned method reaches 140s (assuming that all frequency points are synchronized successfully), the above-mentioned establishment The time of the PLMN list greatly affects the user experience, and the MS cannot respond to business needs quickly

Method used

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  • Method and device for establishing PLMN list
  • Method and device for establishing PLMN list
  • Method and device for establishing PLMN list

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Embodiment Construction

[0021] The invention provides a method for establishing a PLMN list. The method reduces the search time of the PLMN list by reducing the number of searched frequency points, can quickly respond to service requirements, and improves user experience. In this method, the MS (that is, the mobile terminal) stores a priori PLMN list, and the priori PLMN list may include historical PLMNs and historical BCCH frequency points under the historical PLMNs. The historical BCCH frequency point may specifically be: the BCCH frequency point successfully decoded by the MS when establishing the historical PLMN; it should be noted that there may be multiple historical BCCH frequency points under one historical PLMN. The method as figure 1 shown, including:

[0022] S11. When the MS starts searching the current PLMN list, it searches for the current BCCH frequency point in a cell that meets the requirements, and stores the current BCCH frequency point in the current frequency point list in seque...

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Abstract

The embodiment of the invention provides a method and a device for establishing a PLMN list. The method comprises the following steps that: MS finds out current BCCH frequency points same as historical BCCH frequency points in current BCCH frequency points, and obtains the corresponding historical PLMN; the current BCCH frequency points with best signal strength are found out to be taken as checkfrequency points, the check frequency points are subjected to cell synchronization, and the check frequency points are processed by decoding after the synchronization is successful to obtain the PLMNof the check frequency points; and when the PLMN of the check frequency points is same as the historical PLMN of same BCCH frequency points with the best signal, the MS reports the PLMN of the check frequency points and does not carry out the cell synchronization and decoding for the remaining BCCH frequency points same as the historical BCCH frequency points in the historical PLMN. The method and the device provided by the invention has the advantages of reducing the search time of the PLMN list, rapidly responding to business needs, and improving user experience.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and device for establishing a PLMN list. Background technique [0002] Global System for Mobile communications (Global System for Mobile communications, GSM) public land mobile network (Public Land Mobile Network, PLMN) list search refers to searching how many GSM network frequency points are in the coverage area, and the currently available GSM network frequency points The PLMN corresponding to the point (that is, the frequency point with successful decoding) is reported to the mobile station (Mobile Station, MS). The specific method of establishing the PLMN list can be as follows: MS searches for a cell that meets the requirements, searches for GSM network frequency points in the cell that meets the requirements, and performs all available GSM network frequency points that are currently searched one by one according to the level of signal strength. For cell synchronization, ...

Claims

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Application Information

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IPC IPC(8): H04W48/16
Inventor 张红军董颖林涛
Owner HUAWEI DEVICE CO LTD
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