CN103906180B - A kind of method of fast search PLMN - Google Patents
A kind of method of fast search PLMN Download PDFInfo
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- CN103906180B CN103906180B CN201210586407.8A CN201210586407A CN103906180B CN 103906180 B CN103906180 B CN 103906180B CN 201210586407 A CN201210586407 A CN 201210586407A CN 103906180 B CN103906180 B CN 103906180B
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Abstract
The present invention discloses a kind of method of fast search PLMN, it makes use of the positioning function that present smart mobile phone generally has, the positional information of current mobile terminal is obtained using registered PLMN RRPLMN lists in the recent period and is stored, then the distance between geographical position for being recorded in mobile terminal current location and recent registered PLMN RRPLMN lists is calculated, and according to calculated distance according to apart from smaller, the priority PLMN PLMN in recent registered PLMN RRPLMN lists higher is ranked up, the last PLMN PLMN orders according in recent registered PLMN RRPLMN lists attempt registered network.In the case where mobile terminal leaves belonging area network, shortening in the new network registry successful time for maximum possible also reduces the possibility refused by network during terminal registration network to a certain extent.
Description
Technical field
The present invention relates to moving communicating field, more particularly to a kind of fast search PLMN method and dress
Put.
Background technology
PLMN（Public Land MobileNetwork, PLMN）, it is by government or warp that it is ratified
Battalion person, the network set up and manage for the public provides land mobile business purpose.The network must exchange electricity with the public
Phone network（PSTN）Interconnection, forms the communication network of whole distract or Country Scale.The PLMN of PLMN=MCC+MNC, such as China Mobile
It is 46000, the PLMN of CHINAUNICOM is 46001.Recently as the fast development of mobile communication technology, old network is not yet complete
Face covers, and new generation network begun to take shape, and causes various network morphologies to exist simultaneously, such as existing 2.5 generation GSM network with
Newly-built 3G network and the LTE network of forth generation just exist simultaneously.Each operator considers in each side, can be assisted using signature
The mode of view reaches compatible, and terminal user then needs often to carry out to search net action and realizes uninterrupted signal service.The third generation
Partner program (The 3rd Generation Partnership Project, 3GPP) is used as an International standardization group
Knit, HPLMN is defined in the protocol（Home Public Land Mobile Network, belong to VPLMN）、
EHPLMN（Equivalent Home Public Land Mobile Network, equivalent ownership place public land movement
Net）, " PLMN of user's control " and the PLMN of control " operator " carry out the priority of control selections network, current 3GPP for
The selecting sequence that PLMN searches net is as follows：
RPLMN is selected first（Registered PLMN, registered PLMN）；Then EHPLMN is just selected
(Equivalent Home PLMN, equivalent local plmn) or ownership place PLMN (HPLMN)；Next to that the PLMN of user's control
(User Controlled PLMN,UPLMN)；Be followed by operator control PLMN (UserControlled PLMN,
OPLMN)；As above three can not register, good " PLMN/ wireless access technologys " group of other signal qualitys can be just selected
Close, randomly choose certain PLMN in the list；It is last just to select other " PLMN/ wireless access technologys " to combine, according to letter
The fine or not arranged in sequence of number quality.As shown in figure 1, its be prior art 3GPP agreements specified in terminal search the flow of net.Though
Defined in right 3GPP " PLMN of operator's control " and " forbidden PLMN list " these PLMN can be controlled to search net
Mechanism, but actually since will the permanent typing in SIM, or to change configure-reject reason of network side etc. no
The factor for easily changing, operability is relatively low, even without what practical effect.These reasons can cause terminal leaving
After the PLMN of registered place, longer time is spent to be capable of the network of successful registration to search every time.
Because the network process of searching described by 3GPP agreements searches inefficient, the Duo Shuoyi of net under present actual network environment
Dynamic terminal searches network process in real network to current 3GPP agreements all carries out optimization as shown in Figure 2, to once succeeding in registration
The PLMN for crossing, mobile terminal can store it in RRPLMN according to the order of time order and function（Recently Registered
PLMN, recent registered PLMN）In list, the priority of time more late arrangement is higher.As shown in Fig. 2 its
For terminal searches the flow of net under prior art, the situation that the HPLMN controlled in the HPLMN or network of user's control cannot be registered
Under, just according to the precedence of PLMN priority in recent registered PLMN RRPLMN, PLMN is searched for one by one, only
Will can successful registration network, just exit search procedure.The structure class of the registered PLMN RRPLMN of its near-mid term
Form like shown in table 1, have recorded each PLMN for being resident recently and succeeded resident time point at that time.
The prior art RRPLMN list structures of table 1
| PLMN id 1 | Time1 |
| PLMN id 2 | Time2 |
| PLMN id 3 | Time3 |
| PLMN id 4 | Time4 |
| ... | ... |
Putting in order for candidate network in table 1 is time order and function according to succeeding in registration, that is to say, that successful registration
Time is more late, and the priority of this network is higher.If the moving direction of mobile terminal is always in one direction, according to the time
First priority of disposing order is also calculated relatively rationally later, but mobile terminal can not possibly be moved in one direction all the time.And in usual feelings
Under condition, the characteristics of the moving direction of mobile terminal is still presented randomization, mobile terminal is most recently successfully registered in time
Network, as the possibility for changing not necessarily successful registration again of mobile terminal locations is maximum.On the other hand, for same
One PLMN, different region user right is also different, although being so before RPLMN, has changed region location, not
Necessarily have permission.Than situation as shown in Figure 3, have three can be all identical with the network of successful registration, access technology, be respectively
PLMN1, PLMN2 and PLMN3.The direction of terminal movement is A->B->C->D, originally terminal be successfully registered to PLMN1, after pass through
One section of region of no signal is crossed, B is reached and is successfully registered to PLMN2, afterwards again by one section of region of no signal, reach C simultaneously
PLMN3 is successfully registered to, D is finally reached.From the point of view of time relationship, resident PLMN is PLMN3 recently, and terminal is at D positions
PLMN3 should be registered to, but it is clear that now attempt be registered to PLMN1 successful possibility maximum, and PLMN1 be not from
The PLMN that the nearest success calculated on time is resident.
Therefore, under the prior art, can only can improve to a certain extent and have left the mobile terminal of former ownership place and exist
The successful possibility of registered network in new network environment, recent registration in time into the network of merits and demerits is attempted using this,
Still the situation for randomly selecting is likely to form, so as to increase the number of times of trial, the number of times of trial is more, then be finally successfully registered to
The time of network is more long.
The content of the invention
The problem that the present invention is solved is problem more long of existing mobile terminal registered network used time.
To solve the above problems, the present invention provides a kind of method of fast search PLMN, including：
Initiate to search net when mobile terminal is into new PLMN PLMN regions；
The registered PLMN RPLMN of registration is attempted, if succeeded in registration, that is, the current ground of mobile terminal is obtained
Reason positional information, and store registered PLMN RRPLMN lists in the near future；
Such as register registered PLMN RPLMN failures, it tries registration ownership VPLMN
HPLMN or equivalent ownership VPLMN EHPLMN, such as succeeds in registration, that is, obtain the current geography of mobile terminal
Positional information, and store registered PLMN RRPLMN lists in the near future；
Ownership VPLMN HPLMN or equivalent ownership VPLMN EHPLMN is such as registered to lose
Lose, it tries the PLMN UPLMN of the registered user's control or PLMN OPLMN of operator's control,
Such as succeed in registration, that is, obtain the current geographical location information of mobile terminal, and store registered PLMN in the near future
RRPLMN lists；
Such as the PLMN UPLMN or the PLMN EHPLMN of operator's control of registered user's control
Failure, then access whether registered PLMN RRPLMN lists in the recent period are empty, is such as sky, there is the net of signal to residue
Network is randomly ordered, and registered network is attempted in sequence；
It is not sky such as to access recent registered PLMN RRPLMN lists, then：
Obtain the positional information of current mobile terminal；
Calculate the geography of mobile terminal current location and record in recent registered PLMN RRPLMN lists
The distance between position；
To the PLMN in recent registered PLMN RRPLMN lists according to calculated distance according to distance
Smaller, priority is higher to be ranked up；
Registered network is attempted according to the PLMN orders in recent registered PLMN RRPLMN lists..
Further, the mobile terminal is often once searched net and is succeeded in registration, the registered public land in the recent period
Mobile network RRPLMN lists are the corresponding PLMN PLMN positional informations of storage.
Further, the registered PLMN RRPLMN lists in the recent period are a two-dimensional storage structure, its
The PLMN PLMN positional informations of storage include the comprehensive coordinate bit confidence that the longitude and latitude of mobile terminal are constituted
Breath.
Further, the calculating mobile terminal current location and recent registered PLMN RRPLMN lists
The method in the distance between the geographical position of middle record isI=1 ~ N, p=1 ~ M, wherein X
Represent the corresponding longitude in geographical position that this mobile terminal is currently located and latitude respectively with Y, Xpi and Ypi represent i ＆ lt respectively
Longitude and latitude when being once successfully registered to PLMN PLMN ID p residing for mobile terminal.N's and M takes
Value is determined according to the size and mobile terminal of memory space performance in itself.
Optionally, it is suitable according to the PLMN PLMN in recent registered PLMN RRPLMN lists
After sequence attempts registered network, such as succeed in registration, then mobile terminal is successfully resident the network, searches net and terminates, while more new position is believed
Cease recent registered PLMN RRPLMN lists；Such as register it is unsuccessful, then then to the remaining net for having a signal
Network is randomly ordered, and registered network is then attempted in sequence.
Further, the PLMN RRPLMN lists registered in the recent period are preserved on the sim card, or, protect
Exist on mobile terminal read-only storage in itself.
Optionally, the current geographical location information of the mobile terminal is obtained by GPS or Beidou satellite system.
Further, the mobile terminal reservation is computed gained registered PLMN RRPLMN lists in the recent period
Once the corresponding positions of PLMN PLMN succeeded in registration of middle record and the distance of current mobile terminal position
In most short that range information, as the reference distance Dp of the network.
Compared with prior art, the present invention has advantages below：The side of fast search PLMN of the invention
Method make use of the positioning function that present smart mobile phone generally has, using recent registered PLMN RRPLMN lists
Obtain the positional information of current mobile terminal and store, then calculate mobile terminal current location with recent registered public land
The distance between geographical position recorded in mobile network RRPLMN lists, and according to calculated distance according to apart from smaller, it is excellent
The first level PLMN PLMN in recent registered PLMN RRPLMN lists higher is ranked up, most
Afterwards registration net is attempted according to the PLMN PLMN orders in recent registered PLMN RRPLMN lists
Network.In the case where mobile terminal leaves belonging area network, maximum possible was shortened in the new network registry successful time,
Also the possibility refused by network during terminal registration network is reduced to a certain extent.Particularly, when user leaves ownership place
After PLMN, in the case of moving back and forth between two roaming places, the present invention is particularly effective.This for lifting Consumer's Experience,
The continuity that saving power for terminal and holding terminal do business suffers from obvious benefit, and improve mobile terminal from many aspects searches
Net the performance of registration.
Brief description of the drawings
Fig. 1 be prior art 3GPP agreements specified in terminal search the schematic flow sheet of net；
Fig. 2 is the schematic flow sheet that improved terminal searches net in the prior art；
Fig. 3 is the Sample Scenario figure that mobile terminal switches between three PLMN networks；
Fig. 4 is the method flow schematic diagram of fast search PLMN of the invention.
Specific embodiment
To describe technology contents of the invention, structural feature, institute's reached purpose and effect in detail, below in conjunction with embodiment
And coordinate accompanying drawing to be described in detail.
As described by background technology, prior art has done excellent to solve the problems, such as that it is slow that 3GPP standards search net spee to it
Change.Such as to once registering the PLMN PLMN of merits and demerits, mobile terminal can be deposited according to the order of time order and function
Storage is in recent registered PLMN RRPLMN lists, and the priority of time more late arrangement is higher.So compare
The regulation of 3GPP standards is searched net spee and is increased really, but is still present to form the possibility for randomly selecting situation, so as to increase
Plus the number of times that net is attempted is searched, the number of times of trial is more, then the time for being finally successfully registered to network is more long.
In view of the technological deficiency of the above, the present inventor is according to the profound understanding to industry technology and the combination work heart for many years
, by thinking long and hard, creative one technical scheme that can improve prior art defect of proposition：That is combined with positioning information,
As the PLMN outside mobile terminal successful registration ownership VPLMN PLMN, just at once registered public in the recent period
Geographical location information where recording mobile terminal in land mobile RRPLMN lists.When mobile terminal is needed to use in the recent period
When registration PLMN RRPLMN lists carry out PLMN PLMN search, mobile terminal is calculated first current
Mobile terminal recorded in residing geographical position and recent registered PLMN RRPLMN lists once succeeded
The most short position of distance in the distance between geographical position during registering public land mobile network PLMN, these distances by calculating
The corresponding PLMN PLMN highest priorities for once registering merits and demerits are put, the foremost of list is come, and
And distance is shorter, priority is higher.According to above scheme because it is contemplated that the randomness of terminal movement, certainly than from the time
First later arrangement sequencing it is more reasonable.The order of net is searched just according to the order of this PLMN PLMN lists
Come carry out.
Technical scheme is further described with reference to Fig. 4.Fig. 4 is the public land of fast search of the invention
The method flow schematic diagram of ground mobile network.
Initiate to search net when mobile terminal is into new PLMN PLMN regions；
First attempt to register registered PLMN RPLMN, if succeeded in registration, that is, obtain mobile terminal current
Geographical location information, and store registered PLMN RRPLMN lists in the near future；
Such as register registered PLMN RPLMN failures, it tries registration ownership VPLMN
HPLMN or equivalent ownership VPLMN EHPLMN, such as succeeds in registration, that is, obtain the current geography of mobile terminal
Positional information, and store registered PLMN RRPLMN lists in the near future；
Ownership VPLMN HPLMN or equivalent ownership VPLMN EHPLMN is such as registered to lose
Lose, it tries the PLMN UPLMN of the registered user's control or PLMN OPLMN of operator's control,
Such as succeed in registration, that is, obtain the current geographical location information of mobile terminal, and store registered PLMN in the near future
RRPLMN lists；
Ownership VPLMN or the PLMN failure of operator's control such as registered user's control,
Then access whether registered PLMN RRPLMN lists in the recent period are empty, be such as sky, have to residue the network of signal with
Machine is sorted, and registered network is attempted in sequence；
It is not sky such as to access recent registered PLMN RRPLMN lists, then：
Obtain the positional information of current mobile terminal；
Calculate the geography of mobile terminal current location and record in recent registered PLMN RRPLMN lists
The distance between position；
To the PLMN PLMN in recent registered PLMN RRPLMN lists according to being calculated
According to apart from smaller, priority is higher to be ranked up distance；
Attempted according to the PLMN PLMN orders in recent registered PLMN RRPLMN lists
Registered network.
According to above flow registered network, such as succeed in registration, then mobile terminal is successfully resident the network, search net and terminate, together
When more new location information to recent registered PLMN RRPLMN lists.Such as register it is unsuccessful, then then to residue
The network for having signal it is randomly ordered；Then registered network is attempted in sequence, if succeeded in registration, mobile terminal is successfully stayed
The network is stayed, net is searched and is terminated, while more new location information is to recent registered PLMN RRPLMN lists；As registered
Unsuccessful, then mobile terminal is in urgent call state.
The geographical location information that this mobile terminal achieved above is currently located is represented by（X, Y）, obtain mobile terminal
The method of geographical location information can be by systems such as GPS or big-dipper satellites, and overwhelming majority mobile terminal is respectively provided with fixed at present
Bit function.
As shown in table 2, this is a two dimension to the structure of recent registered PLMN RRPLMN lists here
Storage organization.Each PLMN PLMN id record the geographical position letter of the once nearest n times terminal that successful registration is crossed
Breath,
RRPLMN list structures in the method for the invention of table 2
| PLMN id 1 | ... | |||
| PLMN id 2 | ... | |||
| PLMN id 3 | ... | |||
| ... | ... | ... | ... |
N number of information, just deletes time upper oldest geographical location information if more than.Each geographical location information is used
(Xpi, Ypi) is represented, when Xpi and Ypi represents that i ＆ lt is successfully registered to PLMN PLMN ID p respectively
Longitude and latitude residing for mobile terminal.The maximum number of PLMN id is represented with M.RRPLMN lists can be stored in SIM
On, it is also possible to it is stored on mobile terminal read-only storage in itself.
Calculate the geography of mobile terminal current location and record in recent registered PLMN RRPLMN lists
The method of the distance between position can be using formula one, and mobile terminal can calculate all registered PLMNs in the recent period
Where the corresponding positions of PLMN PLMN once succeeded in registration recorded in RRPLMN lists and current mobile terminal
The distance of position, retains that most short range information, as the reference distance Dp of the network.
Specifically the computing formula of distance is：I=1~N, p=1 ~ M (formula one)
Wherein, X and Y represent the corresponding longitude in geographical position and latitude that this mobile terminal is currently located respectively, Xpi and
Longitude and latitude when Ypi represents that i ＆ lt is successfully registered to PLMN PLMN ID p respectively residing for mobile terminal
Degree.The value of N and M can be determined according to the size of memory space and mobile terminal performance in itself.All distances are all calculated
After finishing, the priority of all-network is arranged according to reference distance Dp.Dp smaller PLMN PLMN, its is preferential
Level is bigger.Mobile terminal sequentially carries out the trial of PLMN PLMN registrations according to this, once certain network notes
Volume success, then exit cut-and-try process, and again updates to registered public in the recent period the geographical location information of current mobile terminal
In land mobile RRPLMN lists.
As all PLMN PLMN in recent registered PLMN RRPLMN lists cannot
If succeeding in registration, according still further to the requirement of 3GPP, the remaining preferable PLMN PLMN of quality is attempted.
In sum, the method for fast search PLMN of the invention make use of present smart mobile phone generally to have
Some positioning functions, the positional information of current mobile terminal is obtained using registered PLMN RRPLMN lists in the recent period
And store, then calculate the ground of mobile terminal current location and record in recent registered PLMN RRPLMN lists
Reason the distance between position, and according to calculated distance according to apart from smaller, priority is higher to registered public land in the recent period
PLMN PLMN in ground mobile network RRPLMN lists is ranked up, and is finally moved according to registered public land in the recent period
PLMN PLMN orders in the RRPLMN lists of dynamic net attempt registered network.Belonging area network is left in mobile terminal
In the case of, shortening in the new network registry successful time for maximum possible also reduces terminal note to a certain extent
The possibility refused by network during volume network.This is for lifting Consumer's Experience, saving power for terminal and keeps terminal to do the company of business
Continuous property suffers from obvious benefit.It can be seen from the above descriptions that the present invention improves mobile terminal from many aspects searches net registration
Performance.
The present invention preferably specific embodiment is the foregoing is only, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
Should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be defined.
Claims (8)
1. a kind of method of fast search PLMN, it is characterised in that including：
Initiate to search net when mobile terminal is into new PLMN PLMN regions；
The registered PLMN RPLMN of registration is attempted, if succeeded in registration, that is, the current geographical position of mobile terminal is obtained
Confidence ceases, and stores registered PLMN RRPLMN lists in the near future；
Such as register registered PLMN RPLMN failure, it tries registration ownership VPLMN HPLMN or
The equivalent ownership VPLMN EHPLMN of person, such as succeeds in registration, that is, obtain the current geographical position letter of mobile terminal
Breath, and store registered PLMN RRPLMN lists in the near future；
Ownership VPLMN HPLMN or equivalent ownership VPLMN EHPLMN failures are such as registered,
The PLMN UPLMN of the registered user's control or PLMN OPLMN of operator's control is then attempted, is such as noted
Volume success, that is, obtain the current geographical location information of mobile terminal, and store registered PLMN in the near future
RRPLMN lists；
PLMN UPLMN or the PLMN OPLMN failures of operator's control such as registered user's control,
Then access whether registered PLMN RRPLMN lists in the recent period are empty, be such as sky, have to residue the network of signal with
Machine is sorted, and registered network is attempted in sequence；
It is not sky such as to access recent registered PLMN RRPLMN lists, then：
Obtain the positional information of current mobile terminal；
Calculate the geographical position of mobile terminal current location and record in recent registered PLMN RRPLMN lists
The distance between；
To the PLMN PLMN in recent registered PLMN RRPLMN lists according to calculated distance
It is far and near according to apart from smaller, priority is higher to be ranked up；
Registration is attempted according to the PLMN PLMN orders in recent registered PLMN RRPLMN lists
Network.
2. the method for a kind of fast search PLMN according to claim 1, it is characterised in that：The movement
Terminal is often once searched net and is succeeded in registration, and the registered PLMN RRPLMN lists in the recent period are storage correspondence
PLMN PLMN positional informations.
3. the method for a kind of fast search PLMN according to claim 1, it is characterised in that：It is described recent
Registered PLMN RRPLMN lists are a two-dimensional storage structure, PLMN PLMN of its storage
Confidence breath includes the comprehensive co-ordinate position information that the longitude of mobile terminal and latitude are constituted.
4. the method for a kind of fast search PLMN according to Claims 2 or 3, it is characterised in that：It is described
Between the geographical position recorded in calculating mobile terminal current location and registered PLMN RRPLMN lists in the recent period
The method of distance beWherein X and Y represent this shifting respectively
The corresponding longitude in geographical position and latitude that dynamic terminal is currently located, it is public that Xpi and Ypi represents that i ＆ lt is successfully registered to respectively
Longitude and latitude when land mobile PLMN ID p residing for mobile terminal；The value of N and M is according to the big of memory space
Small and mobile terminal performance in itself is determined.
5. the method for a kind of fast search PLMN according to claim 4, it is characterised in that：According to recent
After PLMN PLMN orders in registered PLMN RRPLMN lists attempt registered network, such as register
Success, then mobile terminal is successfully resident the network, searches net and terminates, while more new location information is moved to registered public land in the recent period
The RRPLMN lists of dynamic net；Such as register it is unsuccessful, then it is then randomly ordered to the remaining network for having signal, then taste in sequence
Examination registered network.
6. the method for a kind of fast search PLMN according to claim 5, it is characterised in that：It is described recent
Registered PLMN RRPLMN lists are preserved on the sim card, or, it is stored in mobile terminal fixed storage in itself
On device.
7. the method for a kind of fast search PLMN according to claim 6, it is characterised in that：By GPS
Or Beidou satellite system obtains the current geographical location information of the mobile terminal.
8. the method for a kind of fast search PLMN according to claim 4, it is characterised in that：The movement
Terminal retains the public of once succeeding in registration of being computed that gained recorded in registered PLMN RRPLMN lists in the recent period
That most short range information in the distance of the corresponding positions of land mobile PLMN and current mobile terminal position, as
The reference distance Dp of the network.
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| CN201210586407.8A CN103906180B (en) | 2012-12-28 | 2012-12-28 | A kind of method of fast search PLMN |
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| CN201210586407.8A CN103906180B (en) | 2012-12-28 | 2012-12-28 | A kind of method of fast search PLMN |
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