CN101868005A - Method and device for establishing PLMN list - Google Patents
Method and device for establishing PLMN list Download PDFInfo
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- CN101868005A CN101868005A CN 201010181620 CN201010181620A CN101868005A CN 101868005 A CN101868005 A CN 101868005A CN 201010181620 CN201010181620 CN 201010181620 CN 201010181620 A CN201010181620 A CN 201010181620A CN 101868005 A CN101868005 A CN 101868005A
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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 check frequency 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 PLMN of 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
The present invention relates to the communications field, relate in particular to a kind of method and device of the PLMN of foundation tabulation.
Background technology
Global system for mobile communications (Global System for Mobile communications, GSM) Public Land Mobile Nerwork (Public Land Mobile Network, PLMN) list search is meant and searches for the frequency how many GSM networks are arranged in the area of coverage, and with the PLMN of current available GSM network frequency (i.e. the successful frequency of decoding) correspondence report travelling carriage (Mobile Station, MS).It is concrete set up the PLMN tabulation method can for: MS searches for satisfactory sub-district, search GSM network frequency in satisfactory sub-district, and with current search to all available GSM network frequencies to carry out the sub-district one by one by the height of signal strength signal intensity synchronous, with the synchronous successful frequency in sub-district (is Broadcast Control Channel (Broadcast ControlChannel, BCCH)) decode, as the success of decoding then reports MS with the PLMN of this frequency correspondence.The time of setting up the PLMN tabulation so can be (supposing to carry out synchronous frequency points here is M, and the number of the frequency of decoding is N): t=M*500ms+N*500ms; Wherein first 500ms is that MS carries out the synchronous time of sub-district, and second 500ms is the time that MS decodes to each frequency.
In realizing process of the present invention, the inventor finds prior art, and there are the following problems:
The overlong time of setting up the PLMN tabulation that prior art provides, press the regulation of 3GPP 43.022, above-mentioned M theoretical maximum decoding number is 140, so the theoretical maximum time of said method reaches 140s (supposing the success synchronously of all frequencies), the time of the PLMN tabulation of above-mentioned foundation has influenced user's impression greatly, and MS can not quickly respond to business demand.
Summary of the invention
Embodiment of the present invention provides a kind of method and device of the PLMN of foundation tabulation, to reduce the PLMN list search time, rapid response service demand.
The specific embodiment of the present invention provides a kind of method of the PLMN of foundation tabulation, the mobile station MS of described method is preserved priori Public Land Mobile Nerwork PLMN tabulation, and this priori PLMN tabulation comprises the historical broadcasts control channel BCCH frequency under historical PLMN tabulation and each the historical PLMN tabulation; Described method comprises:
When starting current PLMN list search, the current BCCH frequency of search in satisfactory sub-district, and should current BCCH frequency be stored in successively during current frequency tabulates by signal strength signal intensity;
Obtain the historical BCCH frequency corresponding historical PLMN identical with current BCCH frequency;
Find out the identical historical BCCH frequency under each historical PLMN, and obtain the best current BCCH frequency of signal strength signal intensity corresponding each historical PLMN time with identical historical frequency according to described current frequency tabulation and identical historical BCCH frequency, and the current BCCH frequency that this signal strength signal intensity is best is as the verification frequency, it is synchronous that this verification frequency is carried out the sub-district, carrying out the PLMN that decoding processing obtains this verification frequency after the success synchronously;
When the identical historical BCCH frequency corresponding historical PLMN with this verification frequency of the PLMN of this verification frequency is identical, the PLMN of this verification frequency is reported, and no longer the residue BCCH frequency identical with historical BCCH frequency under this history PLMN carried out the sub-district synchronously and decoding.
The embodiment of the invention also provides a kind of mobile station apparatus, described mobile station MS is preserved priori Public Land Mobile Nerwork PLMN tabulation, and this priori PLMN tabulation comprises the historical broadcasts control channel BCCH frequency under historical PLMN tabulation and each the historical PLMN tabulation; Described travelling carriage comprises:
Search unit is used for when starting current PLMN list search, the current BCCH frequency of search in satisfactory sub-district, and should current BCCH frequency be stored in successively during current frequency tabulates by signal strength signal intensity;
Acquiring unit is used to obtain the historical BCCH frequency corresponding historical PLMN identical with current BCCH frequency;
Search the unit, be used to find out the identical historical BCCH frequency under each historical PLMN, and obtain the best current BCCH frequency of signal strength signal intensity corresponding each historical PLMN time with identical historical frequency according to described current frequency tabulation and identical historical BCCH frequency, and the current BCCH frequency that this signal is best is as the verification frequency
Synchronously and decoding unit, it is synchronous to be used for that this verification frequency is carried out the sub-district, is carrying out the PLMN that decoding processing obtains this verification frequency after the success synchronously;
Report the unit, be used for when the identical historical BCCH frequency corresponding historical PLMN with this verification frequency of the PLMN of this verification frequency is identical, the PLMN of this verification frequency is reported, and no longer the residue BCCH frequency identical with historical BCCH frequency under this history PLMN carried out the sub-district synchronously and decoding.
By the above-mentioned technical scheme that provides as can be seen, MS finds out the current BCCH frequency identical with historical BCCH frequency in current BCCH frequency, obtain corresponding historical PLMN; Find out the best current BCCH frequency of signal strength signal intensity as the verification frequency, it is synchronous that this verification frequency is carried out the sub-district, carrying out the PLMN that decoding processing obtains this verification frequency after the success synchronously; When the historical PLMN of the best identical BCCH frequency of the PLMN of this verification frequency and signal is identical, the PLMN of this verification frequency is reported, and no longer the residue BCCH frequency identical with historical BCCH frequency under this history PLMN carried out the sub-district synchronously and decoding.By the enforcement of technique scheme, just can reduce the PLMN list search time, the response service demand improves the advantage of user's impression rapidly.
Description of drawings
Fig. 1 is a kind of method flow diagram of setting up the PLMN tabulation provided by the invention;
The flow chart of the method that a kind of PLMN of foundation that Fig. 2 provides for one embodiment of the invention tabulates;
Fig. 3 is the structure chart of a kind of travelling carriage provided by the invention.
Embodiment
The invention provides the method for a kind of PLMN of foundation tabulation, this method reaches by the frequency points that reduces search and reduces the PLMN list search time, response service demand rapidly, raising user's impression.The MS of this method (being portable terminal) preserves priori PLMN tabulation, this priori PLMN tabulation can comprise historical PLMN and should history PLMN under historical BCCH frequency.This history BCCH frequency is specifically as follows: the BCCH frequency that MS successfully decodes when carrying out the setting up of historical PLMN; Need to prove under the above-mentioned historical PLMN a plurality of historical BCCH frequencies to be arranged.This method comprises as shown in Figure 1:
S11, MS when starting current PLMN list search, the current BCCH frequency of search in satisfactory sub-district, and current BCCH frequency is kept in the current frequency tabulation successively according to signal strength signal intensity;
S12, MS obtain the historical BCCH frequency corresponding historical PLMN identical with current BCCH frequency;
S13, MS find out the identical historical BCCH frequency under each historical PLMN, obtain each historical PLMN signal strength signal intensity best current BCCH frequency corresponding down according to the identical historical BCCH frequency under each historical PLMN with above-mentioned current frequency tabulation with identical historical frequency, and the current BCCH frequency that this signal is best is as the verification frequency, it is synchronous that this verification frequency is carried out the sub-district, carrying out the PLMN that decoding processing obtains this verification frequency after the success synchronously;
Need to prove that each historical PLMN of the verification frequency among the above-mentioned S13 has and only have one; The precondition here is that historical PLMN comprises the historical frequency that at least one is identical with current frequency.
S14, when the PLMN of this verification frequency is identical with this verification frequency corresponding historical PLMN, MS reports the PLMN of this verification frequency, the residue BCCH frequency identical with historical BCCH frequency under this history PLMN is not carried out the sub-district synchronously and decoding.
Need to prove that above-mentioned residue BCCH frequency can be, the current BCCH frequency except the verification frequency.
Optionally, said method can also comprise:
S15, MS find out the BCCH frequency different with historical BCCH frequency from current BCCH frequency, and surpass under the situation of signal threshold value in the signal strength signal intensity of this different B CCH frequency, it is synchronous that this different BCCH frequency is carried out the sub-district, and decoding after success synchronously obtains the PLMN of this different BCCH frequency correspondence;
The PLMN that S16, MS inquire this different BCCH frequency correspondence gives the correct time on not, reports this PLMN.
S17, MS will this different BCCH frequency with and corresponding PLMN be saved in priori PLMN tabulation.
The mode that realizes S17 has 2 kinds, is specially:
Mode A, tabulation includes corresponding PLMN as above-mentioned priori PLMN, then this different BCCH frequency directly is kept under this corresponding PLMN.
Mode B, tabulation does not comprise corresponding PLMN as above-mentioned priori PLMN, the PLMN of a newly-built correspondence in priori PLMN tabulation then, and this different BCCH frequency is kept under the PLMN of correspondence.
Optionally, said method can also comprise after S13 or S15:
As the decoding or the sub-district synchronization failure of BCCH frequency, then this BCCH frequency is put into blacklist, the BCCH frequency to blacklist in the foundation of MS PLMN tabulation does not afterwards carry out the synchronous and decoding in sub-district.
Optionally, above-mentioned BCCH frequency specifically can comprise above-mentioned verification frequency, can certainly comprise the BCCH frequency that above-mentioned and historical BCCH frequency is different.
Optionally, said method can also comprise: the amplitude of variation as the BCCH frequency in the blacklist exceeds amplitude threshold, then this BCCH frequency is shifted out blacklist.
The technique effect of the method that present embodiment provides is described in the mode of Theoretical Calculation below, according to the situation of using network, the number of the historical PLMN that the multipotency of MS is preserved is X, be that example describes below with X=15, according to the method in the present embodiment, 1 PLMN tabulation can only be picked out a verification frequency at most, i.e. 15 historical PLMN tabulations can only be picked out 15 verification frequencies at most, so the number of theoretical maximum decoding frequency is 15 in the present embodiment, under the identical situation of each frequency decode time, it lacks than 140 needed times of frequency of decoding in the prior art certainly, adding that present embodiment provides blacklist mechanism, can further reduce the frequency points that needs decoding.So the method that present embodiment provides has the PLMN list search time of minimizing, the response service demand improves the advantage of user's impression rapidly.
With a real example method provided by the invention is described below.
One embodiment of the invention provides a kind of mode of the PLMN of foundation tabulation, supposing has 3 historical PLMN tabulations in the priori PLMN tabulation that MS preserves, difference called after PLMN 1, PLMN 2 and PLMN 3, wherein PLMN 1 corresponding historical BCCH frequency is: the historical frequency 1-10 of historical frequency 1-1, historical frequency 1-2...; PLMN 2 corresponding historical BCCH frequencies are: the historical frequency 2-10 of historical frequency 2-1, historical frequency 2-2...; PLMN 3 corresponding historical BCCH frequencies are: the historical frequency 3-10 of historical frequency 3-1, historical frequency 3-2...; Need to prove that if no special instructions, frequency all refers to the BCCH frequency in the present embodiment; Then the method that provides of present embodiment comprises as shown in Figure 2:
S21, MS when starting current PLMN list search, the current BCCH frequency of search in satisfactory sub-district, and current BCCH frequency is kept in the current frequency tabulation successively by signal strength signal intensity.
Realize S21 method can for, MS starts the frequency search, the current frequency that searches, here suppose that the current frequency that searches is 40, for convenience of description, here called after frequency 4-1, frequency 4-2... frequency 4-40 suppose that here the order of the signal strength signal intensity of frequency also is: frequency 4-1, frequency 4-2... frequency 4-40.
S22, MS search the current frequency identical with historical frequency from current frequency; And obtain identical historical frequency corresponding historical PLMN;
Realize S22 method can for, suppose that here frequency 4-1, frequency 4-2... frequency 4-8 are identical with historical frequency 1-1, historical frequency 1-2... history frequency 1-8; Frequency 4-10, frequency 4-11... frequency 4-18 are identical with the historical frequency 2-10 of historical frequency 2-2, historical frequency 2-3...; Frequency 4-20, frequency 4-21... frequency 4-27 are identical with the historical frequency 3-10 of historical frequency 3-3, historical frequency 3-4...; Other current frequency is different with historical frequency; Then realize S22 method can for; Find out frequency 4-1, frequency 4-2... frequency 4-8, frequency 4-10, frequency 4-11... frequency 4-18, frequency 4-20, frequency 4-21... frequency 4-27, and obtain the PLMN 1 of the historical frequency 1-8 of historical frequency 1-1, historical frequency 1-2... correspondence; Obtain the PLMN 2 of the historical frequency 2-10 of historical frequency 2-2, historical frequency 2-3... correspondence; Obtain the PLMN 3 of the historical frequency 3-1000 of historical frequency 3-3, historical frequency 3-4... correspondence.
S23, MS find out the identical historical frequency under each historical PLMN, obtain each historical PLMN signal strength signal intensity best current frequency corresponding down according to identical historical frequency under each historical PLMN and current frequency tabulation with identical historical frequency, and the current frequency that this signal is best carries out the PLMN that sub-district back decoding synchronously obtains this verification frequency correspondence as the verification frequency to the verification frequency;
Realize S23 method can for: find out the identical historical frequency (be historical frequency 1-1,, the historical frequency 1-8 of historical frequency 1-2...) of PLMN 1, in like manner find the identical historical frequency (being the historical frequency 2-10 of historical frequency 2-2, historical frequency 2-3...) of PLMN 2 correspondences and the identical historical frequency (being historical frequency 3-3, historical frequency 3-4... history frequency 3-10) of PLMN 3 correspondences; Tabulation obtains the best current frequency frequency 4-1 of signal strength signal intensity with identical historical frequency according to current frequency, and frequency 4-1 as the verification frequency, in like manner, with frequency 4-10 and frequency 4-20 also as the verification frequency; To frequency 4-1, frequency 4-10 and frequency 4-20 carry out the sub-district synchronously and decoding obtain its corresponding respectively PLMN, suppose that the PLMN that obtains is respectively here: the PLMN of frequency 4-1 is that the PLMN of PLMN 1, frequency 4-10 is that the PLMN of PLMN 2, frequency 4-20 is PLMN 3.
S24, MS report PLMN 1, PLMN 2 and PLMN 3, frequency 4-2... frequency 4-8, frequency 4-11... frequency 4-18, frequency 4-21... frequency 4-27 are not carried out the synchronous and decoding in sub-district;
Realize S24 method can for because the PLMN of frequency 4-1, frequency 4-10, frequency 4-20 correspondence is all identical with the PLMN of its corresponding historical frequency, so directly report PLMN 1, PLMN 2 and PLMN3.
S25, MS to frequency inequality carry out the sub-district synchronously and decoding obtain the PLMN of frequency correspondence inequality, do not report as this corresponding PLMN, then report.
The method that realizes S25 is specially: MS is to frequency 4-9, frequency 4-19, frequency 4-28... frequency 4-40 carries out the sub-district and obtains its corresponding PLMN with decoding synchronously, suppose frequency 4-9, frequency 4-19, the PLMN of frequency 4-28 correspondence is PLMN 4, the corresponding PLMN 3 of frequency 4-29... frequency 4-35, frequency 4-36 sub-district is unsuccessful synchronously, the decoding of frequency 4-37... frequency 4-40 sub-district is unsuccessful, then MS reports PLMN4,4-40 joins blacklist with frequency 4-36... frequency, with frequency 4-9, frequency 4-19, frequency 4-28 joins the PLMN 4 times of priori PLMN tabulation, frequency 4-29... frequency 4-35 is joined the PLMN 3 times of priori PLMN tabulation.
Calculate the employing required time of method of the present invention below by theoretical algorithm, calculate the time of prior art earlier, will all carry out the synchronous and decoding in sub-district to 40 frequencies in the prior art, so its real time t1=40*0.5s+39*0.5s=39.5s; Need illustrate, because frequency 36 sub-districts are unsuccessful synchronously, thus do not need to decode, and adopt method institute's time spent provided by the invention to be: t2=(3+15) * 0.5s+ (3+14) * 0.5s=17.5s; Obviously, adopt lack than prior art institute's time spent institute's time spent of the present invention, so it has the PLMN list search time of minimizing, the response service demand improves the advantage of user's impression rapidly.
The present invention also provides a kind of mobile station apparatus, and MS preserves priori Public Land Mobile Nerwork PLMN tabulation, and this priori PLMN tabulation comprises the historical broadcasts control channel BCCH frequency under historical PLMN tabulation and each the historical PLMN tabulation; MS comprises as shown in Figure 3:
Optionally, said apparatus also comprises:
Optionally, said apparatus also comprises:
Shift out unit 37, be used for when the amplitude of variation of the frequency in the blacklist 36 exceeds amplitude threshold, this frequency being shifted out blacklist 36.
Optionally, said apparatus also comprises:
Optionally, said apparatus also comprises:
Preserve unit 40, be used for different BCCH frequencies with and corresponding PLMN be stored in priori PLMN tabulation.
Device provided by the invention has the PLMN list search time of minimizing, and the response service demand improves the advantage of user's impression rapidly.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method can instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, this program comprises one of step or its combination of method embodiment when carrying out.
In sum, the technical scheme that the specific embodiment of the invention provides has the PLMN list search time of minimizing, and the response service demand improves the advantage of user's impression rapidly.
More than the embodiment of the invention is described in detail, used specific case herein principle of the present invention and execution mode set forth, the explanation of above embodiment just is used for help understanding method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. set up the method that PLMN tabulates for one kind, it is characterized in that, the mobile station MS of described method is preserved priori Public Land Mobile Nerwork PLMN tabulation, and this priori PLMN tabulation comprises the historical broadcasts control channel BCCH frequency under historical PLMN tabulation and each the historical PLMN tabulation; Described method comprises:
When starting current PLMN list search, the current BCCH frequency of search in satisfactory sub-district, and should current BCCH frequency be stored in successively during current frequency tabulates by signal strength signal intensity;
Obtain the historical BCCH frequency corresponding historical PLMN identical with current BCCH frequency;
Find out the identical historical BCCH frequency under each historical PLMN, and obtain the best current BCCH frequency of signal strength signal intensity corresponding each historical PLMN time with identical historical frequency according to described current frequency tabulation and identical historical BCCH frequency, and the current BCCH frequency that this signal strength signal intensity is best is as the verification frequency, it is synchronous that this verification frequency is carried out the sub-district, carrying out the PLMN that decoding processing obtains this verification frequency after the success synchronously;
When the identical historical BCCH frequency corresponding historical PLMN with this verification frequency of the PLMN of this verification frequency is identical, the PLMN of this verification frequency is reported, and no longer the residue BCCH frequency identical with historical BCCH frequency under this history PLMN carried out the sub-district synchronously and decoding.
2. method according to claim 1 is characterized in that, described method also comprises:
In the sub-district of frequency synchronously or during the decoding failure, and this frequency added blacklist, during PLMN tabulation is afterwards set up the frequency in this blacklist is not carried out the sub-district synchronously and decoding.
3. method according to claim 2 is characterized in that, described method also comprises:
When the amplitude of variation of the frequency in the blacklist exceeds amplitude threshold, this frequency is shifted out blacklist.
4. method according to claim 1 is characterized in that, described method also comprises after PLMN is reported:
From current BCCH frequency, find out the BCCH frequency different with historical BCCH frequency, and surpass under the situation of signal threshold value in the signal strength signal intensity of this different B CCH frequency, it is synchronous that this different BCCH frequency is carried out the sub-district, and decoding after success synchronously obtains the PLMN of this different BCCH frequency correspondence;
The PLMN that inquires this different BCCH frequency correspondence gives the correct time on not, reports this PLMN.
5. method according to claim 4 is characterized in that, described method also comprises:
With different BCCH frequencies with and corresponding PLMN be stored in the priori PLMN tabulation.
6. a mobile station apparatus is characterized in that, described mobile station MS is preserved priori Public Land Mobile Nerwork PLMN tabulation, and this priori PLMN tabulation comprises the historical broadcasts control channel BCCH frequency under historical PLMN tabulation and each the historical PLMN tabulation; Described travelling carriage comprises:
Search unit is used for when starting current PLMN list search, the current BCCH frequency of search in satisfactory sub-district, and should current BCCH frequency be stored in successively during current frequency tabulates by signal strength signal intensity;
Acquiring unit is used to obtain the historical BCCH frequency corresponding historical PLMN identical with current BCCH frequency;
Search the unit, be used to find out the identical historical BCCH frequency under each historical PLMN, and obtain the best current BCCH frequency of signal strength signal intensity corresponding each historical PLMN time with identical historical frequency according to described current frequency tabulation and identical historical BCCH frequency, and the current BCCH frequency that this signal is best is as the verification frequency
Synchronously and decoding unit, it is synchronous to be used for that this verification frequency is carried out the sub-district, is carrying out the PLMN that decoding processing obtains this verification frequency after the success synchronously;
Report the unit, be used for when the identical historical BCCH frequency corresponding historical PLMN with this verification frequency of the PLMN of this verification frequency is identical, the PLMN of this verification frequency is reported, and no longer the residue BCCH frequency identical with historical BCCH frequency under this history PLMN carried out the sub-district synchronously and decoding.
7. device according to claim 6 is characterized in that, described device also comprises:
Blacklist is used in the sub-district of frequency synchronously or during the decoding failure, this frequency is added blacklist, and the tabulation of PLMN is not afterwards carried out the sub-district synchronously and decoding to the frequency in this blacklist in setting up.
8. device according to claim 7 is characterized in that, described device also comprises:
Shift out the unit, be used for when the amplitude of variation of the frequency in the described blacklist exceeds amplitude threshold, this frequency being shifted out described blacklist.
9. device according to claim 6 is characterized in that, described device also comprises:
The inquiry decoding unit, be used for finding out the BCCH frequency different with historical BCCH frequency from current BCCH frequency, and surpass under the situation of signal threshold value in the signal strength signal intensity of this different B CCH frequency, it is synchronous that this different BCCH frequency is carried out the sub-district, and decoding after success synchronously obtains the PLMN of this different BCCH frequency correspondence;
Inquiry reports the unit, and the PLMN that is used to inquire this different BCCH frequency correspondence gives the correct time on not, reports this PLMN.
10. device according to claim 9 is characterized in that, described device also comprises:
Preserve the unit, be used for different BCCH frequencies with and corresponding PLMN be stored in priori PLMN tabulation.
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| CN2010101816201A CN101868005B (en) | 2010-05-19 | 2010-05-19 | Method and device for establishing PLMN list |
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| CN105704786A (en) * | 2014-11-28 | 2016-06-22 | 展讯通信（上海）有限公司 | Cell rapid searching method and mobile terminal |
| CN114363995A (en) * | 2022-01-21 | 2022-04-15 | 高新兴物联科技有限公司 | Method and device for quickly searching network, mobile terminal and storage medium |
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