CN102395175B - A kind of PLMN system of selection and mobile terminal - Google Patents
A kind of PLMN system of selection and mobile terminal Download PDFInfo
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- CN102395175B CN102395175B CN201110182254.6A CN201110182254A CN102395175B CN 102395175 B CN102395175 B CN 102395175B CN 201110182254 A CN201110182254 A CN 201110182254A CN 102395175 B CN102395175 B CN 102395175B
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Abstract
The present invention proposes a kind of PLMN system of selection and mobile terminal.If terminal storage there are PLMN PLMN list informations, the PLMN consistent with list is selected；If terminal does not store PLMN lists or do not search consistent PLMN, with Home Public Land Mobile Network, HPLMN HPLMN information compared with the PLMN reported, consistent PLMN is selected；If there is no the consistent PLMN of same HPLMN, then consistent PLMN is selected compared with the PLMN reported using the EHPLMN in reciprocity Home Public Land Mobile Network, HPLMN EHPLMN queues；If there is no the consistent PLMN of same EHPLMN, then it is compared using registration PLMN RPLMN lists, selects consistent PLMN.Technical solution of the present invention can ensure that UE is more stably linked into network, and the more rapidly request to user responds.
Description
Technical field
The present invention relates to communication technical field, more particularly, to a kind of PLMN system of selection and shifting
Dynamic terminal.
Background technology
With the development of the communication technology, the speed of mobile network's upgrading is also increasingly faster, so that an area may
It is more to there is global system for mobile communications (Global System for Mobile Communications, GSM), wideband code division
Location (Wide band Code Division Multiple Access, WCDMA), Time Division-Synchronous Code Division Multiple Access (Time
Division-Synchronous Code Division Multiple Access, TD-SCDMA), 3GPP Long Term Evolutions
The network of (3GPP Long Term Evolution, LTE).In order to realize the free-roaming between different areas, network, these
Network just need to carry out it is limited shared, to realize the result of resource complementation.In this case, make which net is terminal preferably access
Network seems extremely important, this be also why terminal start after firstly the need of progress be exactly network select.
The purpose of selecting network is exactly to allow terminal to access available network, and is communicated.In following situation
Under, terminal will carry out network selection：
First, after starting up of terminal；
Second, user carries out network selection manually；
Third, terminal enters the area of coverage from blind area；
Fourth, carry out international roaming.
Agreement, which defines network selection, needs certain rule, i.e., if terminal does not register PLMN
(Registered Public Land Mobile Network, RPLMN) or registration failure, then will in the following order
Other PLMN are selected, and attempt to register the PLMN：
1st, Home Public Land Mobile Network, HPLMN (Home Public Land Mobile Network, HPLMN)；
2nd, the constituent instruments (Elementary in Subscriber Identity Module (Subscriber Identity Module, SIM)
File, EF) " PLMN and wireless access technology of user's control " list in each PLMN；
3rd, each PLMN of EF " PLMN and wireless access technology of operator's control " in list in the sim；
4th, according to other PLMN for receiving high-quality signal of random sequence arrangement；
5th, successively decrease other PLMN of arrangement according to signal quality.
In the prior art, for above-mentioned system of selection, network selection is required for initiating to include these PLMN to Access Layer
The access request of information, then Access Layer initiation frequency sweep progress cell searching, searches for the cell of the PLMN, if searching this
PLMN, then just select this network and be resident, if search is less than the PLMN, then terminal changes PLMN, continues small
Area searching, this process is repeated.
Protocol requirement carries out PLMN selections successively according to above-mentioned order, but operator is supplied to the SIM of user to differ
Surely there can be above-mentioned PLMN information, because the PLMN in SIM be present is to need storage to be solidificated in SIM, arrive user
SIM information can not be just modified, and operator is very more, all operators are stored entirely in it is unrealistic in SIM,
The cooperation between operator is also to change at any time simultaneously, also the PLMN that actually cell uses not necessarily with SIM
PLMN is consistent, the problem of operability being brought not high, so it is very careful that each operator is set to SIM PLMN information
It is careful, typically all without setting these data in the sim.The use of radio band is more and more now simultaneously, especially for
The frequency range that the terminal of multiband uses also can be more, can increase the time of PLMN selection costs using mode as defined in agreement, enter
And make it that the time of user's available machine time or wait-for-response is elongated.Selected so needing one to lift network effectively
The method of journey time.
The content of the invention
The present invention seeks to propose a kind of PLMN system of selection and mobile terminal.
To achieve the above object, the present invention proposes a kind of PLMN system of selection, and methods described includes：Such as
Fruit terminal storage has PLMN PLMN list informations, then selects the PLMN consistent with list；If terminal does not have
Storage PLMN lists or do not search consistent PLMN, then with Home Public Land Mobile Network, HPLMN HPLMN information and reports
PLMN is compared, and selects consistent PLMN；If there is no the consistent PLMN of same HPLMN, then belong to public land using equity
EHPLMN in ground mobile network's EHPLMN queues selects consistent PLMN compared with the PLMN reported；If there is no
The consistent PLMN with EHPLMN, then it is compared, is selected consistent using registration PLMN RPLMN lists
PLMN。
Further, after powering, if there is the cell list information of last time shutdown, then request is to specific small for terminal
Area carries out PLMN selections, obtains the PLMN information in these cells, and only report the PLMN of most strong cell；If the PLMN and row
PLMN information in table is consistent, then terminal selects the PLMN.
Further, if the specific region does not have the PLMN consistent with PLMN lists, terminal is according to itself energy
Power carries out frequency sweep, and the PLMN of the cell searched is arranged, and is judged successively, is looked into according to the order of PLMN lists
Look for suitable PLMN.
Further, if first PLMN information of PLMN lists is not found in the PLMN reported, then will
Second PLMN information of PLMN lists is compared, and looks for the information for meeting the PLMN, the like.
Further, if terminal does not search the PLMN information consistent with PLMN lists, or terminal does not store
PLMN lists, then the HPLMN information in SIM is used compared with the PLMN reported, if the PLMN reported is present together
PLMN consistent HPLMN, this PLMN is selected, complete PLMN selection courses.
It further, will use foremost in EHPLMN queues if there is no PLMN consistent same HPLMN, terminal
EHPLMN is compared, if there is the consistent PLMN of same EHPLMN, then MM will select this PLMN, complete PLMN and select
Journey.
Further, if terminal will be entered from when losing covering return using the newest existing PLMN lists of Non-Access Stratum
Row PLMN selection courses, the list are arranged according to priority；At this moment Non-Access Stratum will ask Access Layer to carry out access request,
Frequency sweep is carried out according to self-ability, obtains cell information and signal intensity, and is ranked up, reports Non-Access Stratum；Then will
The two lists are compared, according to principle be first to carry out the best PLMN of signal in the PLMN lists of Non-Access Stratum
Search, if it does, this PLMN will be selected, and complete PLMN selection courses, select by that analogy.
The present invention also proposes a kind of mobile terminal, and the mobile terminal, which includes mobile terminal, includes user-machine interface mould
Block, mobile management module, radio resource control module and Access Layer module；
The user-machine interface module owner machine interaction process；
The mobile management module, it is responsible for public land mobile network PLMN selections processing；
The radio resource control module schedules Access Layer carries out access processing；
The Access Layer module carries out access operation, measurement and information processing.
Further, the mobile management module contrasts the PLMN searched and Non-Access Stratum storage PLMN lists,
The selection PLMN consistent with list.
Further, the PLMN lists of Non-Access Stratum storage include the newest PLMN used, most recently used PLMN,
PLMN of equal value and main PLMN.
In summary, technical solution of the present invention can ensure that UE is more stably linked into network, more rapidly to
The request at family is responded.
Brief description of the drawings
Fig. 1 is mobile terminal schematic diagram of the embodiment of the present invention；
Fig. 2 is the PLMN lists of Non-Access Stratum of embodiment of the present invention storage；
Fig. 3 is the method flow schematic diagram that mobile terminal of the embodiment of the present invention carries out PLMN selections；
Fig. 4 is the handling process signal that UE of the embodiment of the present invention carries out PLMN selection courses in the case where losing covering
Figure.
Embodiment
A kind of method of relatively reasonable, suitable PLMN selections of offer of the present invention, can ensure UE (user terminal) more
Add and be stably linked into network, the more rapidly request to user responds.
Inventive network system of selection main thought is as follows：
After powering, the Non-Access Stratum for receiving man-machine interface (Man Machine Interface, MMI) instruction will for terminal
The PLMN lists preserved when being shut down from last time recover, and preserve these information by the MM of Non-Access Stratum, and initiate to access to Access Layer
Request, it is desirable to which Access Layer proceeds by cell searching.Here if there is the cell list information of last time shutdown, MM can be with
Request carries out PLMN selections to specific cell, the PLMN information being therefrom quickly obtained in these cells, at this moment only reports most
The PLMN of strong cell.If the PLMN information in PLMN lists of the PLMN with MM is consistent, then MM just selects the PLMN,
And PLMN selection courses are completed, request Access Layer proceeds by cell selection procedure.
If the PLMN and MM PLMN information is inconsistent, then MM will ask Access Layer, be swept according to self-ability
Frequently, the PLMN of the cell searched is arranged, is sent to MM, require the PLMN cell signal strength reported here at least
It is higher than -84dbm.MM will be judged these PLMN that it is suitable to be searched according to the order of MM PLMN lists successively
PLMN, if first PLMN information of PLMN lists is not found in the PLMN reported, then by the second of PLMN lists
Individual PLMN information is compared, and looks for the information for meeting the PLMN, the like.If there is in the PLMN lists with MM
The consistent PLMN of PLMN information, then MM will complete PLMN selection courses, start request and start cell selection procedure.
If the PLMN information consistent with PLMN lists is not searched, or terminal is to be used for the first time, i.e.,
The situation of this PLMN list is not present in NAS, then MM will be carried out using the HPLMN information in SIM with the PLMN reported
Compare, if the PLMN reported has the PLMN consistent with HPLMN, then MM will select this PLMN, complete PLMN selection courses.
If there is no the consistent PLMN of same HPLMN, then MM will use reciprocity Home Public Land Mobile Network, HPLMN
Foremost EHPLMN in (Equivalent Home Public Land Mobile Network, EHPLMN) EHPLMN queues
It is compared, if there is the consistent PLMN of same EHPLMN, then MM will select this PLMN, complete PLMN selection courses.
If there is no the consistent PLMN of same HPLMN, then MM will be compared using RPLMN queues, if in RPLMN
It is middle there is a situation where it is consistent with the PLMN reported, then will select this PLMN, and complete PLMN processes.
If UE is from when losing covering return, then MM will use the newest existing PLMN lists of Non-Access Stratum to carry out PLMN
Selection course, the list are arranged according to priority.At this moment Non-Access Stratum will ask Access Layer to carry out access request, according to certainly
Body ability carries out frequency sweep, obtains cell information and signal intensity, by the PLMN of cell of the cell signal strength higher than -84dbm
Report, and be ranked up, report Non-Access Stratum.Then MM will be compared to the two tables, according to principle be, first by signal
Best PLMN is searched in the PLMN lists of Non-Access Stratum, if it is present, MM will select this PLMN, and is completed
PLMN selection courses, by that analogy.
Technical solution of the present invention is described in further details with specific embodiment below in conjunction with the accompanying drawings.
In the following embodiments, described mobile terminal can be TD-SCDMA terminals, WCDMA terminals or possess TD-
SCDMA patterns have multimode terminal of WCDMA mode etc..
Fig. 1 is refer to, as shown in figure 1, mobile terminal described in the embodiment of the present invention includes user-machine interface module
(MMI), mobile management module (MM), radio resource control module (Radio Resource Control, RRC) and access
Layer module (AS).
The user-machine interface module is topmost one layer, is responsible for man-machine dialogue system.
The mobile management module, positioned at Non-Access Stratum, it is responsible for the processing primary module that PLMN is selected.
The radio resource control module carries out access processing as scheduling Access Layer, and low layer is controlled.
The Access Layer module carries out the operation such as access operation, measurement, information processing.
It refer to shown in Fig. 2, Fig. 2 is the PLMN lists of Non-Access Stratum of embodiment of the present invention storage, and it is by four part groups
Into the newest PLMN used, most recently used PLMN, PLMN of equal value and main PLMN.The newest PLMN used shut down for last time
The PLMN information used before, i.e., nearest PLMN information is selected from this progress PLMN, most recently used PLMN makes for before
Used PLMN information, but be not nearest PLMN information, PLMN of equal value are to believe with the PLMN of the HPLMN levels that have that All factors being equal, preference will be give to
Breath, PLMN of equal value can be read from SIM, and be existed all the time in the list, be not modified, i.e., in this PLMN information and SIM
EPLMN is consistent, and main PLMN is the PLMN information of limit priority, and the information is also to be read from SIM, and is stored in this list
In.
Fig. 3 is refer to, Fig. 3 embodiment of the present invention mobile terminal carries out the method flow schematic diagram of PLMN selections, and its is main
Including the following steps：
S301：Initial p LMN is selected；
S302：The PLMN lists being most recently stored are judged whether, if it is present step S303 is transferred to, if do not deposited
Then it is being transferred to step S310；
If the PLMN lists that last time uses in mobile terminal be present, then after the dependent instruction for receiving MMI, UE by this
PLMN list informations are sent to MM, and this list is managed by MM.Subsequent MM will assemble the PLMN lists, and find last time
Cell information sending is given to radio resource control (Radio Resource Control, RRC) in the cell list of preservation,
Request RRC carries out access processing to these cells.
S303：Assemble the PLMN lists；
S304：Request AS is to specifying cell to scan for；
S305：Report the PLMN information searched；
AS operates to these cell measurements etc., and reports the measured value and PLMN information of these cells of RRC, subsequent RRC
A peak signal cell is selected from these cells, by its PLMN information reporting to MM.
S306：The PLMN lists that the PLMN information reported stores in itself with mobile terminal are compared, if what this was reported
PLMN information is present in the list, then is transferred to step S307, if it does not exist, then being transferred to step S320；
MM is then searched the PLMN information reported in the PLMN lists that itself is stored, and this PLMN is there are if found
Information, then think that the PLMN information is effective, MM selectes this PLMN information, will report for information about, terminates PLMN selection courses.
S310：Recombinate the PLMN lists；
It is to be appreciated that the PLMN of parity price is not compared with HPLMN when now tabling look-up, because explanation is now used
The PLMN list informations condition that can not meet to select high priority PLMN, it is necessary to enter in process afterwards to PLMN lists
Row renewal.If the PLMN information reported can not all be found in PLMN lists, then MM will recombinate to PLMN lists,
Delete the newest PLMN used, delete most recently used PLMN, do not use the information of the two units to do PLMN selections
S311：Request AS scans for all cells；
S312：Report the PLMN information searched；
S313：The PLMN lists that all PLMN information reported store in itself with mobile terminal are compared, if on this
The PLMN information of report is present in the list, then is transferred to step S307, if it does not exist, then being transferred to step S330；
S330：Abnormal ending process.
S320：Request AS scans for all cells；
When recombinating PLMN lists, request RRC is subjected to cell searching, RRC will ask AS to be searched for according to self-ability,
All cell informations are all reported, at this moment RRC is judged in reporting subdistrict information, by all cell informations
Report, cell information sequence is carried out according to order from high in the end, reports MM afterwards.MM will be selected the PLMN that these are reported
Select, the order of selection is since the PLMN information of most strong cell, the PLMN lists to MM storages searches, now lookup side
Formula first searches HPLMN since the bottom of table.If there is this PLMN information, then MM just selectes this PLMN, and ties
Beam PLMN selection courses.
S321：Report the PLMN information searched；
If the PLMN information for the peak signal cell that RRC is reported is not found in the PLMN lists that MM is stored, then
MM will ask RRC to carry out cell searching, and RRC requires that AS starts to search for according to self-ability, by the cell information on each carrier frequency
All report.
S322：The PLMN lists that all PLMN information reported store in itself with mobile terminal are compared, if on this
The PLMN information of report is present in the list, then is transferred to step S307, if it does not exist, then being transferred to step S310；
At this moment RRC is reported can be judged during the information of these cells again, and those cell signal strengths are less than into -84dbm
Cell information do not report because these cell strengths are weaker, cell selection procedure below is influenced whether, so these are small
Area's information does not report.After RRC arranges these cells according to signal intensity from high to low, by PLMN information reportings to MM.MM will
The PLMN that these are reported is selected, the requirement of selection is, since the PLMN information of most strong cell, to the PLMN of MM storages
List is tabled look-up, if there is this PLMN information, then MM just selectes this PLMN, and terminates PLMN selection courses.
S307：PLMN is reported described in specifying as access network work.
It is that whole PLMN lists are searched, in order to enable the terminals to find one when being tabled look-up in said process
Individual more suitable PLMN, completes this process.
It refer to shown in Fig. 4, Fig. 4 is that UE of the embodiment of the present invention carries out PLMN selection courses in the case where losing covering
Handling process schematic diagram, it comprises the following steps：
S401：Initial p LMN is selected；
Now MM will initialize PLMN processes, and some variables are assigned into initial value.
S402：Again with storage PLMN lists；
Terminal will be matched somebody with somebody again to the PLMN lists of itself, by the newest PLMN unit informations used and most recently used
PLMN unit informations are deleted.
S403：Request AS scans for all cells；
MM will ask RRC to carry out cell searching, and without the cell searching of configuration, RRC will ask AS to proceed by frequency sweep, root
Searched for according to self-ability.
S404：RRC is by the reporting district information on the carrier frequency searched；
Then reporting district information on the carrier frequency searched is ranked up by RRC according to the signal intensity of cell, and on
Offer MM.
S405：If MM will report PLMN, without consistent PLMN, to be transferred to step compared with the PLMN lists
S406, if consistent PLMN is then transferred to step S407；
MM will be compared according to the PLMN information of these cells, and at this moment MM will be tabled look-up using inverted order, first that signal is best
Cell compared with HPLMN, if inconsistent with HPLMN, then by the second-best cell of signal compared with HPLMN, enter successively
Row compares.If PLMN information and the HPLMN of the cell reported are not complyed with, then again by the best cell of signal and EPLMN
Compare, such order compares down successively, finds a consistent PLMN, then MM will select this PLMN.
S406：Abnormal ending process；
S407：The PLMN is specified as access network.
Technical solution of the present invention can ensure that UE is more stably linked into network, and the more rapidly request to user is entered
Row response.
Certainly, the present invention can also have numerous embodiments, in the situation without departing substantially from spirit of the invention and its essence, be familiar with this
The technical staff in field can make various corresponding changes or change according to the present invention certainly, as long as in the spiritual and former of the present invention
Any modification, equivalent substitution and improvements made within then, should be included in the scope of the protection.
Claims (7)
1. a kind of PLMN system of selection, it is characterised in that methods described includes：If terminal storage has public
Land mobile network PLMN list informations, then select the PLMN consistent with list；If terminal does not store PLMN lists or not
Consistent PLMN is searched, then with Home Public Land Mobile Network, HPLMN HPLMN information compared with the PLMN reported, selects one
The PLMN of cause；If there is no the consistent PLMN of same HPLMN, then using reciprocity Home Public Land Mobile Network, HPLMN EHPLMN queues
In EHPLMN compared with the PLMN reported, select consistent PLMN；If there is no the consistent PLMN of same EHPLMN, then
It is compared using registration PLMN RPLMN lists, selects consistent PLMN.
2. the method as described in claim 1, it is characterised in that terminal after powering, arranges if there is the cell of last time shutdown
Table information, then request carry out PLMN selections to specific cell, obtain the PLMN information in these cells, and only report most strong small
The PLMN in area；If the PLMN is consistent with the PLMN information in list, terminal selects the PLMN.
3. method as claimed in claim 2, it is characterised in that if the specific cell is without consistent with PLMN lists
PLMN, then terminal according to self-ability carry out frequency sweep, the PLMN of the cell searched is arranged, and is sentenced successively
It is disconnected, suitable PLMN is searched according to the order of PLMN lists.
4. method as claimed in claim 3, it is characterised in that if first PLMN information of PLMN lists reports
Do not found in PLMN, then second PLMN information of PLMN lists is compared, looks for the information for meeting the PLMN, according to
It is secondary to analogize.
5. the method as described in claim 1, it is characterised in that if terminal do not search it is consistent with PLMN lists
PLMN information, or terminal do not store PLMN lists, then use the HPLMN information in SIM to be compared with the PLMN reported
Compared with if the PLMN reported has the PLMN consistent with HPLMN, selecting this PLMN, complete PLMN selection courses.
6. the method as described in claim 1, it is characterised in that if there is no the consistent PLMN of same HPLMN, terminal will use
Foremost EHPLMN is compared in EHPLMN queues, if there is the consistent PLMN of same EHPLMN, then MM will select this
PLMN, complete PLMN selection courses.
7. method as claimed in claim 6, it is characterised in that if terminal will use non-access from when losing covering return
The newest existing PLMN lists of layer carry out PLMN selection courses, and the list is arranged according to priority；At this moment Non-Access Stratum will
Ask Access Layer to carry out access request, frequency sweep is carried out according to self-ability, obtains cell information and signal intensity, and arranged
Sequence, report Non-Access Stratum；Then by the list that generates after the cell information and signal intensity sequence and Non-Access Stratum
PLMN lists are compared, according to principle be first to be looked into the best PLMN of signal in the PLMN lists of Non-Access Stratum
Look for, if it does, this PLMN will be selected, and complete PLMN selection courses, select by that analogy.
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| CN201110182254.6A CN102395175B (en) | 2011-06-30 | 2011-06-30 | A kind of PLMN system of selection and mobile terminal |
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| CN201110182254.6A CN102395175B (en) | 2011-06-30 | 2011-06-30 | A kind of PLMN system of selection and mobile terminal |
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| CN110234156B (en) * | 2013-05-14 | 2022-01-14 | 华为技术有限公司 | Network selection method and device |
| CN104684021B (en) * | 2013-11-29 | 2020-01-14 | 中兴通讯股份有限公司 | Method and system for establishing NAS connection and wireless access network node |
| TWI687109B (en) * | 2014-04-03 | 2020-03-01 | 南韓商三星電子股份有限公司 | Method, user equipment and non-transitory computer-readable medium for handling public land mobile network selection in mobile communication network |
| CN105393603B (en) * | 2014-06-27 | 2019-08-27 | 华为技术有限公司 | Select the method and device thereof and equipment of public land mobile network PLMN |
| CN110177392B (en) * | 2014-11-20 | 2021-08-03 | 华为终端有限公司 | Cell selection method and device |
| CN104902533B (en) | 2015-04-30 | 2016-12-28 | 广东欧珀移动通信有限公司 | A kind of method for network access and mobile communication terminal |
| CN104853404B (en) * | 2015-04-30 | 2017-03-15 | 广东欧珀移动通信有限公司 | A kind of method for network access and mobile communication terminal |
| CN104853412B (en) * | 2015-04-30 | 2018-03-27 | 广东欧珀移动通信有限公司 | A kind of method for network access and mobile communication terminal |
| CN105554847B (en) * | 2015-09-29 | 2019-03-22 | 宇龙计算机通信科技(深圳)有限公司 | A kind of network registering method and mobile terminal |
| CN111148212B (en) * | 2019-12-30 | 2022-10-11 | 北京华为数字技术有限公司 | Network registration method and device |
| CN112040533B (en) * | 2020-08-18 | 2023-06-27 | 广东小天才科技有限公司 | Network searching control method and device for terminal equipment and terminal equipment |
| US20240049119A1 (en) * | 2021-02-05 | 2024-02-08 | Qualcomm Incorporated | Improvement to public land mobile network search at switch-on for wireless communications |
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| CN1750698A (en) * | 2005-09-19 | 2006-03-22 | 北京天碁科技有限公司 | Quick selecting network registrated double mode or multiple mode terminal and method |
| CN1980454A (en) * | 2005-12-02 | 2007-06-13 | 中国移动通信集团公司 | Method for selecting network in multi-network-number network |
| CN101031145A (en) * | 2006-02-13 | 2007-09-05 | 捷讯研究有限公司 | Method and apparatus for selecting a wireless communication network at a mobile station |
| WO2009096496A1 (en) * | 2008-01-30 | 2009-08-06 | Nec Corporation | Plmn selection in multi-network environment |
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| CN102395175A (en) | 2012-03-28 |
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