CN106332232A - Method and system for carrying out PLMN (Public Land Mobile Network) search in terminal device - Google Patents
Method and system for carrying out PLMN (Public Land Mobile Network) search in terminal device Download PDFInfo
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- CN106332232A CN106332232A CN201510372729.6A CN201510372729A CN106332232A CN 106332232 A CN106332232 A CN 106332232A CN 201510372729 A CN201510372729 A CN 201510372729A CN 106332232 A CN106332232 A CN 106332232A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
Abstract
The invention relates to a method and system for carrying out PLMN (Public Land Mobile Network) search in a terminal device. The method comprises carrying out full-band search for various radio access technologies. The method comprises the steps of a, initializing a PLMN list of each band under a current radio access technology, wherein the PLMN list comprises identification numbers, frequency upper boundaries and frequency lower boundaries of one or more PLMNs in the band; b, obtaining to-be-searched frequency points under the current radio access technology; c, selecting unsearched frequency points and obtaining the bands in which the frequency points are located; d, judging whether the current frequency point is in the frequency range of the known PLMN, entering a step g if the current frequency point is in the frequency range of the known PLMN, otherwise entering a step e, wherein the frequency range is determined by the frequency upper boundary and the frequency lower boundary; e, carrying out search attempt, and reading the PLMN information when the search is successful; f, updating the PLMN list of the band corresponding to the current frequency point; and g, repeating the steps b-f until the to-be-searched frequency points under the current radio access technology are searched completely.
Description
Technical field
The present invention relates to moving communicating field, especially relate to a kind of method and system thereof carrying out PLMN search at terminal unit.
Background technology
PLMN (Public Land Mobile Network, public land mobile network) provide land mobile business for the public, it is identified by the combination of MNC (mobile network number) and MCC (mobile national number), and ensure that its uniqueness in the world.Different PLMN belongs to different operators, and simultaneously and deposits multiple PLMN an area possibility.The such as terminal unit such as mobile phone, panel computer, in order to normally obtain mobile communication business, needs to carry out PLMN search, and the PLMN list obtained according to search selects suitable PLMN to carry out resident.
In the PLMN searching method of existing terminal unit, it is common that use the mode of full frequency band search.Figure 1A illustrates the main flow that PLMN searches for, with reference to shown in Figure 1A, according to the priority of the wireless access technology (Radio Access Technology, RAT) that terminal unit is supported, scan for each frequency under its each supported frequency range attempting.The setting of priority can be in the way of taking acquiescence, it is also possible to obtains from the information of USIM/SIM card storage.Figure 1B illustrates single RAT full frequency band search routine, with reference to shown in Figure 1B, if searching available community, then the PLMN information in reading cell system message, preserve the current RAT in this community and corresponding PLMN information, then change to next frequency and continue to attempt to；The most directly change to next frequency attempt.Terminal unit repeats above-mentioned process, until all frequency ranges under all RAT have all been searched for.So terminal unit just obtains the complete PLMN list information of current region, in order to carries out follow-up PLMN selection and processes.
In existing PLMN searching method, need each of terminal unit support RAT is carried out full frequency band search, i.e. each frequency under each frequency range is carried out cell searching trial.But present terminal equipment supports increasing wireless access technology, multiple frequency range is included again under each wireless access technology, the custom terminal of such as China Mobile requires to support 5 mould 15 frequency (5 kinds of patterns, 15 frequency ranges), thus cause terminal unit to complete PLMN time of being spent of search the longest, have a strong impact on the experience of user.
Summary of the invention
The technical problem to be solved is to provide a kind of method and system carrying out PLMN search at terminal unit, can be more quickly completed PLMN search.
The present invention solves that above-mentioned technical problem employed technical scheme comprise that a kind of method carrying out PLMN search at terminal unit of proposition, full frequency band search is carried out including for each wireless access technology, it comprises the following steps: a. initializes the PLMN list of each frequency range under current wireless access technology, and this PLMN list comprises the identifier of one or more PLMN in this frequency range, frequency coboundary and frequency lower boundary；B. the frequency to be searched under current wireless access technology is obtained；C. select the frequency not scanned for, obtain its place frequency range；D. judging that current frequency, whether in the frequency range of known PLMN, if yes then enter step g, otherwise enters step e, this frequency range is determined by this frequency coboundary and this frequency lower boundary；E. scan for attempting, and read PLMN information when searching for successfully；F. the PLMN list of current frequency corresponding frequency band is updated；And g. repeats step b-f, until the frequency to be searched under current wireless access technology has been searched for.
In one embodiment of this invention, step b includes: all frequency ranges under current wireless access technology are carried out frequency sweep；And carry out frequency sequence according to frequency sweep result, it is thus achieved that frequency to be searched.
In one embodiment of this invention, step c preferably selects the frequency that sequence is forward.
In one embodiment of this invention, this step a includes emptying this PLMN list.
In one embodiment of this invention, this step a includes obtaining at least some of known PLMN information and recorded this PLMN list.
In one embodiment of this invention, step f includes updating the identification number of PLMN, frequency coboundary and/or frequency lower boundary.
In one embodiment of this invention, when the frequency of current frequency is higher than this frequency coboundary, then this frequency coboundary is updated the frequency of current frequency；When the frequency of current frequency is less than this frequency lower boundary, then this frequency lower boundary is updated the frequency of current frequency.
The present invention also proposes a kind of system carrying out PLMN search at terminal unit, including the device carrying out full frequency band search for each wireless access technology, comprising: the first module, for initializing the PLMN list of each frequency range under current wireless access technology, this PLMN list comprises the identifier of one or more PLMN in this frequency range, frequency coboundary and frequency lower boundary；Second module, for obtaining the frequency to be searched under current wireless access technology；Three module, for selecting the frequency not scanned for, obtains its place frequency range；4th module, for judge current frequency whether in the frequency range of known PLMN, if otherwise starting the 5th module, this frequency range is determined by this frequency coboundary and this frequency lower boundary；5th module, is used for scanning for attempting, and reads PLMN information when searching for successfully；6th module, for updating the PLMN list of current frequency corresponding frequency band；And the 7th module, for controlling the first to the 5th module, until the frequency to be searched under current wireless access technology has been searched for.
Present invention utilizes the feature of radio spectrum resources allocative decision in actual application, by judging the border frequency of each PLMN in each frequency range, reduce the frequency number that terminal unit scans for attempting, greatly reduced the time overhead of PLMN search.Comparing traditional processing mode, the present invention is all obviously improved on Consumer's Experience and power dissipation overhead.
Accompanying drawing explanation
For the above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing, the detailed description of the invention of the present invention is elaborated, wherein:
Figure 1A illustrates the main flow of existing PLMN searching method.
Figure 1B illustrates the flow process that single RAT full frequency band is searched for by existing PLMN searching method.
Fig. 2 A illustrates the main flow of the PLMN searching method of one embodiment of the invention.
Fig. 2 B illustrates the flow process that single RAT full frequency band is searched for by the PLMN searching method of one embodiment of the invention.
Detailed description of the invention
Embodiments of the invention describe the PLMN searching method and device improved, and need to attempt the frequency points of search by reducing, thus be more quickly completed PLMN search in full frequency band search.
Owing to single PLMN is corresponding with certain operator of certain country, and in actual applications, the distribution of radio spectrum resources is that the continuous fragment in each frequency range is distributed to same operator, and the frequency therefore possessing identical PLMN is to occur continuously.Further, in order to ensure not disturb, identical frequency spectrum resource will not be assigned to different operators.Such as, table 1 below is the radio spectrum resources distribution condition of current CONTINENTAL AREA OF CHINA, it is evident that each operator, under every kind of access technology, is all to obtain a certain section of continuous frequency spectrum resource in certain frequency range.
Table 1 China's Mainland wireless communication frequency band divides
According to the design of the present invention, during PLMN searches for, for each frequency range, can record and safeguard the coboundary (altofrequency border) of frequency range and the lower boundary (low frequency border) of each PLMN found.In follow-up search is attempted, for frequency to be searched, first obtain its place frequency range, then retrieve whether this frequency falls in the frequency range of certain PLMN of this frequency range, the most then think that PLMN corresponding to this frequency had found, skip follow-up search；Otherwise attempt carrying out cell searching, if being successfully searched community, then reading the system message of this community, obtaining PLMN information, according to the new PLMN information obtained and subdistrict frequency point, safeguard PLMN list and its frequency range updating this frequency range.
Fig. 2 A illustrates the main flow of the PLMN searching method of one embodiment of the invention.With reference to shown in Fig. 2 A, in step 201, terminal unit starts PLMN search；In step 202, it may be judged whether all wireless access technologys (Radio Access Technology, RAT) are all attempted complete, if yes then enter step 204, otherwise enter step 203；In step 203, choose a RAT and carry out full frequency band search；In step 204, export the complete PLMN list information of all RAT.
The most NA current limit priority RAT can be chosen in step 203 and carry out full frequency band search.
The concrete steps of step 203 are referred to, shown in Fig. 2 B, comprise the steps:
Step 211, the PLMN list of each frequency range under initialization current wireless access technology.PLMN list comprises the identifier of one or more PLMN in this frequency range, frequency coboundary and frequency lower boundary.
For example, the PLMN list of each frequency range by several by PLMN_ID, frequency coboundary fup, frequency lower boundary fdownTriplet information (PLMN_ID, the f of compositionup, fdown) constitute.Frequency coboundary fupWith frequency lower boundary fdownCollectively form the frequency range of PLMN.
In one embodiment, PLMN list can be emptied when initializing.In another embodiment, obtain at least some of known PLMN information when initializing and recorded PLMN list.Such as, PLMN identifier and the frequency range of some known operator can be pre-recorded.This PLMN list periodically or irregularly can be updated by the way of networking.
In step 212, obtain the frequency to be searched under current RAT.
For example, conventionally, all frequency ranges under current RAT can be carried out frequency sweep, then carry out frequency sequence according to frequency sweep result, it is thus achieved that frequency to be searched.It will be understood, however, that obtain frequency to be searched mode can according to the practice of this area and those skilled in the art need change.
In step 213, it may be judged whether all frequency band searches complete, if not then entering step 214, if yes then enter step 220.
In step 214, select the frequency not scanned for, obtain its place frequency range.
Here, when frequency has carried out sequence, can be with the forward frequency of prioritizing selection sequence.
In step 215, it is judged that whether current frequency, in the frequency range of known PLMN, if it is returns to step 213, otherwise enter step 216.
Judging whether certain frequency f falls when the frequency range of certain PLMN of its place frequency range, the criterion of foundation is that the upper and lower border of frequency of certain PLMN of this frequency range meets fdown≤ f≤fup。
In step 216, scan for attempting.
In step 217, it may be judged whether search for successfully, if yes then enter step 218, otherwise return to step 213.
In step 218, read PLMN information.PLMN information now generally includes and only includes PLMN_ID.
In step 219, update the PLMN list of current frequency corresponding frequency band, be then back to step 213.
In step 220, export the PLMN list information under this RAT.
The element updating PLMN list can include the identification number of PLMN, frequency coboundary and/or frequency lower boundary.Exemplary renewal process is as follows:
1) once at certain frequency fiOn be successfully searched community and read PLMN information, remember that its PLMN_ID is PLMN_IDi, it is judged that whether this frequency range has PLMN_ID equal to PLMN_IDiPLMN record；The most then go to step 3), otherwise go to step 2).
2) a newly-increased PLMN record in the PLMN list of this frequency range, its PLMN_ID value is PLMN_IDi, the coboundary f of its frequencyup=fi, the lower boundary f of frequencydown=fi.Then 4 are gone to step).
3) for existing PLMN_ID equal to PLMN_IDiPLMN record carry out the renewal of frequency range, if fi>fup, then by fupIt is updated to fi；If fi<fdown, then by fdownIt is updated to fi。
4) there is new frequency point cell to search for successfully if this frequency range is follow-up, then go to step 2).
The method using the present embodiment, it is possible to reduce terminal unit carries out the frequency points that PLMN search is attempted, the notable time overhead shortening PLMN search, improves Consumer's Experience and the power dissipation overhead of PLMN search.According to measuring and calculating, on average, at least shortening the time overhead of 50%, concrete amplitude depends on the moment that coboundary in the environment of difference, lower boundary find.
The carrying out the method for PLMN search at terminal unit and can be carried out in the computer-readable medium of the combination of hardware at such as computer software, hardware or computer software of the above embodiment of the present invention.For hardware is implemented, embodiment described in the present invention can be at one or more special ICs (ASIC), digital signal processor (DSP), digital signal processor (DAPD), PLD (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, be carried out for performing the selection combination of other electronic installation of above-mentioned functions or said apparatus.In some circumstances, this kind of embodiment can be implemented by controller.
For software is implemented, embodiment described in the present invention can be carried out by independent software modules such as such as program module (procedures) and function modules (functions), and each of which module performs one or more functions described herein and operation.Software code can be carried out by the application software write in properly programmed language, can be stored in internal memory, controller or processor perform.The system carrying out PLMN search at terminal unit of the such as present invention, including the device carrying out full frequency band search for each wireless access technology, comprising: the first module, for initializing the PLMN list of each frequency range under current wireless access technology, this PLMN list comprises the identifier of one or more PLMN in this frequency range, frequency coboundary and frequency lower boundary；Second module, for obtaining the frequency to be searched under current wireless access technology；Three module, for selecting the frequency not scanned for, obtains its place frequency range；4th module, for judge current frequency whether in the frequency range of known PLMN, if otherwise starting the 5th module, this frequency range is determined by this frequency coboundary and this frequency lower boundary；5th module, is used for scanning for attempting, and reads PLMN information when searching for successfully；6th module, for updating the PLMN list of current frequency corresponding frequency band；And the 7th module, for controlling the first to the 5th module, until the frequency to be searched under current wireless access technology has been searched for.
Although the present invention describes with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment is intended merely to the present invention is described, change or the replacement of various equivalence also can be made in the case of without departing from spirit of the present invention, therefore, as long as change, the modification of above-described embodiment all will be fallen in the range of following claims in the spirit of the present invention.
Claims (8)
1. the method carrying out PLMN search at terminal unit, enters including for each wireless access technology
Row full frequency band is searched for, and it comprises the following steps:
A. the PLMN list of each frequency range under initialization current wireless access technology, this PLMN list comprises
The identifier of one or more PLMN, frequency coboundary and frequency lower boundary in this frequency range；
B. the frequency to be searched under current wireless access technology is obtained；
C. select the frequency not scanned for, obtain its place frequency range；
D. judge current frequency whether in the frequency range of known PLMN, if yes then enter step g,
Otherwise entering step e, this frequency range is determined by this frequency coboundary and this frequency lower boundary；
E. scan for attempting, and read PLMN information when searching for successfully；
F. the PLMN list of current frequency corresponding frequency band is updated；And
G. step b-f is repeated, until the frequency to be searched under current wireless access technology has been searched for.
2. the method for claim 1, it is characterised in that step b includes:
All frequency ranges under current wireless access technology are carried out frequency sweep；And
Frequency sequence is carried out, it is thus achieved that frequency to be searched according to frequency sweep result.
3. method as claimed in claim 2, it is characterised in that preferably select the frequency that sequence is forward in step c
Point.
4. the method for claim 1, it is characterised in that step a includes emptying this PLMN list.
5. the method for claim 1, it is characterised in that step a includes obtaining the most known
PLMN information and recorded this PLMN list.
6. the method for claim 1, it is characterised in that step f include update PLMN identification number,
Frequency coboundary and/or frequency lower boundary.
7. method as claimed in claim 6, it is characterised in that when the frequency of current frequency is higher than in this frequency
Border, then update the frequency of current frequency by this frequency coboundary；When the frequency of current frequency is following less than this frequency
Boundary, then update the frequency of current frequency by this frequency lower boundary.
8. carry out a system for PLMN search at terminal unit, enter including for each wireless access technology
The device of row full frequency band search, comprising:
First module, for initializing the PLMN list of each frequency range under current wireless access technology, should
It is following that PLMN list comprises the identifier of one or more PLMN in this frequency range, frequency coboundary and frequency
Boundary；
Second module, for obtaining the frequency to be searched under current wireless access technology；
Three module, for selecting the frequency not scanned for, obtains its place frequency range；
4th module, for judge current frequency whether in the frequency range of known PLMN, if otherwise
Starting the 5th module, this frequency range is determined by this frequency coboundary and this frequency lower boundary；
5th module, is used for scanning for attempting, and reads PLMN information when searching for successfully；
6th module, for updating the PLMN list of current frequency corresponding frequency band；And
7th module, for control the first to the 5th module, until current wireless access technology under to be searched
Frequency has been searched for.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109548114A (en) * | 2018-10-24 | 2019-03-29 | 努比亚技术有限公司 | Public land mobile network cut-in method, terminal and computer readable storage medium |
| WO2022067813A1 (en) * | 2020-09-30 | 2022-04-07 | 华为技术有限公司 | Cell search method applied to terminal, and communication apparatus |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1797990A (en) * | 2004-12-27 | 2006-07-05 | 凯明信息科技股份有限公司 | Method for scanning frequency points in TDS-CDMA system |
| US20080242297A1 (en) * | 2007-04-02 | 2008-10-02 | Lee Yong Noh | Method for searching for network in radio communication system |
| CN101547499A (en) * | 2008-03-27 | 2009-09-30 | 三星电子株式会社 | Method for searching initial cell of mobile terminal |
| CN101998586A (en) * | 2009-08-17 | 2011-03-30 | 联芯科技有限公司 | Method and device for searching PLMN (Public Land Mobile Network) of TD-LTE (Time Division-LongTerm Evolution) |
| CN102238699A (en) * | 2010-04-26 | 2011-11-09 | 捷讯研究有限公司 | Apparatus and method for searching for and reporting public land mobile networks 'PLMNs' in a mobile telecommunications system |
| CN102355712A (en) * | 2011-10-11 | 2012-02-15 | 中兴通讯股份有限公司 | Method for accelerating searching speed of public land mobile network and device |
| US8145213B2 (en) * | 2006-07-19 | 2012-03-27 | Samsung Electronics Co., Ltd | Apparatus and method for generating PLMN list in mobile communication system |
-
2015
- 2015-06-30 CN CN201510372729.6A patent/CN106332232B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1797990A (en) * | 2004-12-27 | 2006-07-05 | 凯明信息科技股份有限公司 | Method for scanning frequency points in TDS-CDMA system |
| US8145213B2 (en) * | 2006-07-19 | 2012-03-27 | Samsung Electronics Co., Ltd | Apparatus and method for generating PLMN list in mobile communication system |
| US20080242297A1 (en) * | 2007-04-02 | 2008-10-02 | Lee Yong Noh | Method for searching for network in radio communication system |
| CN101547499A (en) * | 2008-03-27 | 2009-09-30 | 三星电子株式会社 | Method for searching initial cell of mobile terminal |
| CN101998586A (en) * | 2009-08-17 | 2011-03-30 | 联芯科技有限公司 | Method and device for searching PLMN (Public Land Mobile Network) of TD-LTE (Time Division-LongTerm Evolution) |
| CN102238699A (en) * | 2010-04-26 | 2011-11-09 | 捷讯研究有限公司 | Apparatus and method for searching for and reporting public land mobile networks 'PLMNs' in a mobile telecommunications system |
| CN102355712A (en) * | 2011-10-11 | 2012-02-15 | 中兴通讯股份有限公司 | Method for accelerating searching speed of public land mobile network and device |
Non-Patent Citations (1)
| Title |
|---|
| 常爽: "TD_SCDMA手机的PLMN最佳搜索算法研究", 《重庆邮电学院学报(自然科学版)》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109548114A (en) * | 2018-10-24 | 2019-03-29 | 努比亚技术有限公司 | Public land mobile network cut-in method, terminal and computer readable storage medium |
| WO2022067813A1 (en) * | 2020-09-30 | 2022-04-07 | 华为技术有限公司 | Cell search method applied to terminal, and communication apparatus |
| CN114586419A (en) * | 2020-09-30 | 2022-06-03 | 华为技术有限公司 | Cell search method applied to terminal and communication device |
| CN114586419B (en) * | 2020-09-30 | 2024-05-03 | 华为技术有限公司 | Cell searching method and communication device applied to terminal |
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Address after: 201206 Pudong New Area, Shanghai, China (Shanghai) free trade pilot area, 1258 A406 3 fourth story room. Patentee after: Chen core technology Co.,Ltd. Patentee after: Chenxin Technology Co.,Ltd. Address before: 201206 Pudong New Area, Shanghai, China (Shanghai) free trade pilot area, 1258 A406 3 fourth story room. Patentee before: Chen core technology Co.,Ltd. Patentee before: Chenxin Technology Co.,Ltd. |