CN103906180A - Method for quickly searching for public land mobile networks - Google Patents
Method for quickly searching for public land mobile networks Download PDFInfo
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- CN103906180A CN103906180A CN201210586407.8A CN201210586407A CN103906180A CN 103906180 A CN103906180 A CN 103906180A CN 201210586407 A CN201210586407 A CN 201210586407A CN 103906180 A CN103906180 A CN 103906180A
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Abstract
The invention discloses a method for quickly searching for public land mobile networks. According to the method, a positioning function which existing smart phones commonly have is used, position information of a current mobile terminal is obtained and stored by the adoption of a recently registered public land mobile network (RRPLMN) list, then the distance between a current position of the mobile terminal and the geographical position recorded in the RRPLMN list is calculated, the public land mobile networks (PLMN) in the RRPLMN list are sequenced according to the principle that the smaller the calculated distance is, the higher the priority is, and finally people try to register a network according to the sequence of the PLMNs in the RRPLMN. On the situation that the mobile terminal moves away from an attribution network, time for successfully registering a new network is shortened as much as possible, and the probability that register is rejected when the mobile terminal registers the network is reduced to some extent.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to a kind of method and device of fast search Public Land Mobile Nerwork.
Background technology
PLMN(Public Land MobileNetwork, Public Land Mobile Nerwork), be the operator who is ratified by government or it, the network that provides land mobile business purpose to set up and manage for the public.This network must interconnect with public switched telephone network (PSTN), forms the communication network of whole distract or Country Scale.PLMN=MCC+MNC, the PLMN of for example China Mobile is 46000, the PLMN of CHINAUNICOM is 46001.In recent years along with the fast development of mobile communication technology, old network covers not yet comprehensively, new generation network begins to take shape, and causes diverse network form to exist simultaneously, just exist as existing 2.5 generation GSM networks and newly-built 3G network and the LTE network in the 4th generation simultaneously.Each operator considers in each side, can adopt the mode subscribing to the agreement to reach compatible, and terminal use needs often to search net action and realizes uninterrupted signal service.Third generation partner program (The 3rd Generation Partnership Project, 3GPP) as an International Organization for standardization, in agreement, define HPLMN(Home Public Land Mobile Network, ownership place Public Land Mobile Nerwork), EHPLMN(Equivalent Home Public Land Mobile Network, the ownership place Public Land Mobile Nerwork of equivalence), " PLMN that user controls " and " PLMN that operator controls " controls the priority of selecting network, the selecting sequence that 3GPP searches net for PLMN is at present as follows:
First select RPLMN(Registered PLMN, registered Public Land Mobile Nerwork); Then just select EHPLMN (Equivalent Home PLMN, equivalent local plmn) or ownership place PLMN (HPLMN); Next is the PLMN (User Controlled PLMN, UPLMN) that user controls; Then be the PLMN (UserControlled PLMN, OPLMN) that operator controls; As above three can not register, just can select other good " PLMN/ wireless access technology " combination of signal quality, select at random certain PLMN in this list; Last " PLMN/ wireless access technology " combination of just selecting other, according to the fine or not arranged in sequence of signal quality.As shown in Figure 1, its flow process of searching net for the terminal specifying in prior art 3GPP agreement.Although defined these mechanism that can control PLMN and search net of " PLMN that operator controls " and " forbidden PLMN list " in 3GPP, but in fact because will be in SIM card permanent typing, or configure-reject reason of revising network side etc. is not easy the factor changing, operability is lower, even there is no what practical effect.These reasons can cause terminal after leaving the PLMN of registered place, all will spend the longer time to search the network that can successfully register at every turn.
Search network process to search net efficiency at now actual net environment not high because 3GPP agreement is described, most mobile terminals are searched network process to current 3GPP agreement and are all carried out optimization as shown in Figure 2 in real network, to once registering the PLMN of merits and demerits, mobile terminal can be stored in RRPLMN(Recently Registered PLMN according to the order of time order and function, recent registered Public Land Mobile Nerwork) in list, the priority of more late arrangement of time is higher.As shown in Figure 2, the flow process that it searches net for terminal under prior art, the HPLMN controlling in the case of user or the HPLMN of network control cannot register, just according to the precedence of PLMN priority in recent registered Public Land Mobile Nerwork RRPLMN, search for one by one PLMN, as long as can successful registered network, just exit search procedure.Its near-mid term registered Public Land Mobile Nerwork RRPLMN the similar table 1 of structure shown in form, recorded each PLMN of nearest resident mistake and the resident time point of success at that time.
Table 1 prior art RRPLMN list structure
| PLMN?id?1 | Time1 |
| PLMN?id?2 | Time2 |
| PLMN?id?3 | Time3 |
| PLMN?id?4 | Time4 |
| ... | ... |
Putting in order of candidate network in table 1 is the time order and function according to succeeding in registration, and that is to say, the time that success is registered is more late, and the priority of this network is higher.If the moving direction of mobile terminal is always towards a direction, according to time order and function come priority of disposing order also calculate more reasonable, but mobile terminal can not move towards a direction all the time.And under normal conditions, the moving direction of mobile terminal still presents randomized feature, the network that mobile terminal was successfully registered in time recently, along with the variation of mobile terminal locations might not be the possibility maximum that success is registered again.On the other hand, for same PLMN, different region user rights is also different, although be RPLMN so before, has changed region location, might not have authority.Than situation as shown in Figure 3, there are three networks that can successfully register, access technology is all identical, is respectively PLMN1, PLMN2 and PLMN3.The direction of fast mobile terminal is A->B->C->D, originally terminal is successfully registered to PLMN1, afterwards through the region of one section of no signal, arrive B and be successfully registered to PLMN2, afterwards again through the region of one section of no signal, arrive C and be successfully registered to PLMN3, finally arriving D.From time relationship, resident PLMN is PLMN3 recently, and terminal should be registered to PLMN3 in the time of D position, but obviously, now attempt being registered to the successful possibility maximum of PLMN1, and PLMN1 is not the resident PLMN of nearest success calculating from the time.
Therefore, under prior art, can only can improve to a certain extent mobile terminal successful possibility of registered network in new network environment of having left former ownership place, adopt this trial recent registration in time to become the network of merits and demerits, or may form the situation of choosing at random, thereby increase the number of times of attempting, the number of times of trial is more, the time that is finally successfully registered to network is just longer.
Summary of the invention
The problem that the present invention solves is the problem of growing the existing mobile terminal registered network used time.
For addressing the above problem, the invention provides a kind of method of fast search Public Land Mobile Nerwork, comprising:
In the time that entering new Public Land Mobile Nerwork PLMN region, mobile terminal initiates to search net;
Attempt the registered Public Land Mobile Nerwork RPLMN of registration, if succeeded in registration, obtain the current geographical location information of mobile terminal, and be stored in recent registered Public Land Mobile Nerwork RRPLMN list;
As it is failed to register registered Public Land Mobile Nerwork RPLMN, attempt the ownership place Public Land Mobile Nerwork EHPLMN of registration ownership place Public Land Mobile Nerwork HPLMN or equivalence, as succeed in registration, obtain the current geographical location information of mobile terminal, and be stored in recent registered Public Land Mobile Nerwork RRPLMN list;
As failed in the ownership place Public Land Mobile Nerwork EHPLMN that registers ownership place Public Land Mobile Nerwork HPLMN or equivalence, attempt the Public Land Mobile Nerwork UPLMN of registered user's control or the Public Land Mobile Nerwork OPLMN that operator controls, as succeed in registration, obtain the current geographical location information of mobile terminal, and be stored in recent registered Public Land Mobile Nerwork RRPLMN list;
As the Public Land Mobile Nerwork EHPLMN failure of the Public Land Mobile Nerwork UPLMN of registered user's control or operator's control, whether access recent registered Public Land Mobile Nerwork RRPLMN list is empty, as be empty, there is the network of signal randomly ordered to residue, attempt in order registered network;
As access recent registered Public Land Mobile Nerwork RRPLMN list not for empty:
Obtain the positional information of current mobile terminal;
Calculate the distance between the geographical position of recording in mobile terminal current location and recent registered Public Land Mobile Nerwork RRPLMN list;
Far and near less according to distance according to calculate distance to the PLMN in recent registered Public Land Mobile Nerwork RRPLMN list, priority is higher to sort;
Attempt registered network according to the PLMN order in recent registered Public Land Mobile Nerwork RRPLMN list.。
Further, described mobile terminal is often once searched net and is succeeded in registration, and described recent registered Public Land Mobile Nerwork RRPLMN list stores corresponding Public Land Mobile Nerwork PLMN positional information.
Further, described recent registered Public Land Mobile Nerwork RRPLMN list is a two-dimensional storage structure, and the Public Land Mobile Nerwork PLMN positional information of its storage comprises the longitude of mobile terminal and the comprehensive co-ordinate position information that latitude forms.
The method of the distance between the geographical position of further, recording in described calculating mobile terminal current location and recent registered Public Land Mobile Nerwork RRPLMN list is
i=1 ~ N, p=1 ~ M, wherein X and Y represent respectively corresponding longitude and the latitude in geographical position at the current place of this mobile terminal, the residing longitude of mobile terminal and latitude when Xpi and Ypi represent respectively to be once successfully registered to Public Land Mobile Nerwork PLMN ID p for the i time.The value of N and M decides according to the performance of the size of memory space and mobile terminal itself.
Optionally, attempt after registered network according to the Public Land Mobile Nerwork PLMN order in recent registered Public Land Mobile Nerwork RRPLMN list, as succeed in registration, resident this network of mobile terminal success, search anastomose bundle, upgrade positional information to recent registered Public Land Mobile Nerwork RRPLMN list simultaneously; As register unsuccessfully, and then there is the network of signal randomly ordered to remaining, then attempt in order registered network.
Further, described recent registered Public Land Mobile Nerwork RRPLMN list is kept in SIM card, or, be kept on the read-only storage of mobile terminal itself.
Optionally, obtain the current geographical location information of described mobile terminal by GPS or Beidou satellite system.
Further, described mobile terminal retains position that the Public Land Mobile Nerwork PLMN once succeeding in registration that records in the recent registered Public Land Mobile Nerwork RRPLMN list of gained is as calculated corresponding and that the shortest range information in the distance of mobile terminal position at present, as the reference distance Dp of this network.
Compared with prior art, the present invention has the following advantages: the positioning function that the method for fast search Public Land Mobile Nerwork of the present invention has utilized present smart mobile phone generally to have, adopt recent registered Public Land Mobile Nerwork RRPLMN list to obtain positional information the storage of current mobile terminal, then calculate the distance between the geographical position of recording in mobile terminal current location and recent registered Public Land Mobile Nerwork RRPLMN list, and far and near less according to distance according to calculate distance, priority is higher to sort to the Public Land Mobile Nerwork PLMN in recent registered Public Land Mobile Nerwork RRPLMN list, finally attempt registered network according to the Public Land Mobile Nerwork PLMN order in recent registered Public Land Mobile Nerwork RRPLMN list.In the situation that mobile terminal leaves belonging area network, the shortening of maximum possible in successful time of new network registry, the possibility of having been refused by network while also having reduced to a certain extent terminal registration network.Especially, after user leaves ownership place PLMN, in the situation that moving around between two roaming places, the present invention is especially effective.This has obvious benefit for the continuity that promotes user's experience, saving power for terminal and keep terminal to do business, has improved mobile terminal search the performance that net is registered from many aspects.
Brief description of the drawings
Fig. 1 is the schematic flow sheet that the terminal that specifies in prior art 3GPP agreement is searched net;
Fig. 2 is the schematic flow sheet that in prior art, improved terminal is searched net;
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 Public Land Mobile Nerwork of the present invention.
Embodiment
By describing technology contents of the present invention, structural feature in detail, being reached object and effect, below in conjunction with embodiment and coordinate accompanying drawing to be described in detail.
As background technology is described, prior art is searched the slow problem of net spee in order to solve 3GPP standard, and it is optimized.As to the Public Land Mobile Nerwork PLMN that once registered merits and demerits, mobile terminal can be stored in recent registered Public Land Mobile Nerwork RRPLMN list according to the order of time order and function, and the priority of more late arrangement of time is higher.The regulation of comparing like this 3GPP standard is searched net spee and is really increased, and forms but still exist possibility of choosing at random situation, searches thereby increase the number of times that net is attempted, and the number of times of trial is more, and the time that is finally successfully registered to network is just longer.
In view of above technological deficiency, the inventor is according to the profound understanding of industry technology and in conjunction with work gains in depth of comprehension for many years, through thinking long and hard, one of creationary proposition can improve the technical scheme of prior art defect: i.e. combined with positioning information, when PLMN outside mobile terminal is successfully registered ownership place Public Land Mobile Nerwork PLMN, the just geographical location information at record move terminal place in recent registered Public Land Mobile Nerwork RRPLMN list at once.In the time that mobile terminal need to use recent registered Public Land Mobile Nerwork RRPLMN list to carry out Public Land Mobile Nerwork PLMN search, first calculate the once distance between geographical position when successful registering public land mobile network PLMN of the mobile terminal that records in the current residing geographical position of mobile terminal and recent registered Public Land Mobile Nerwork RRPLMN list, these are the highest through the Public Land Mobile Nerwork PLMN priority of once registering merits and demerits corresponding to the shortest position of the distance middle distance calculating, come the foremost of list, and distance is shorter, priority is higher.Because considered the randomness of fast mobile terminal, certainly more reasonable than arranging afterwards sequencing from temporal elder generation according to above scheme.Searching the order of net just carries out according to the order of this Public Land Mobile Nerwork PLMN list.
Further describe technical scheme of the present invention below in conjunction with Fig. 4.Fig. 4 is the method flow schematic diagram of fast search Public Land Mobile Nerwork of the present invention.
In the time that entering new Public Land Mobile Nerwork PLMN region, mobile terminal initiates to search net;
First attempt the registered Public Land Mobile Nerwork RPLMN of registration, if succeeded in registration, obtain the current geographical location information of mobile terminal, and be stored in recent registered Public Land Mobile Nerwork RRPLMN list;
As it is failed to register registered Public Land Mobile Nerwork RPLMN, attempt the ownership place Public Land Mobile Nerwork EHPLMN of registration ownership place Public Land Mobile Nerwork HPLMN or equivalence, as succeed in registration, obtain the current geographical location information of mobile terminal, and be stored in recent registered Public Land Mobile Nerwork RRPLMN list;
As failed in the ownership place Public Land Mobile Nerwork EHPLMN that registers ownership place Public Land Mobile Nerwork HPLMN or equivalence, attempt the Public Land Mobile Nerwork UPLMN of registered user's control or the Public Land Mobile Nerwork OPLMN that operator controls, as succeed in registration, obtain the current geographical location information of mobile terminal, and be stored in recent registered Public Land Mobile Nerwork RRPLMN list;
As the Public Land Mobile Nerwork failure of the ownership place Public Land Mobile Nerwork of registered user's control or operator's control, whether access recent registered Public Land Mobile Nerwork RRPLMN list is empty, as be empty, there is the network of signal randomly ordered to residue, attempt in order registered network;
As access recent registered Public Land Mobile Nerwork RRPLMN list not for empty:
Obtain the positional information of current mobile terminal;
Calculate the distance between the geographical position of recording in mobile terminal current location and recent registered Public Land Mobile Nerwork RRPLMN list;
Far and near less according to distance according to calculate distance to the Public Land Mobile Nerwork PLMN in recent registered Public Land Mobile Nerwork RRPLMN list, priority is higher to sort;
Attempt registered network according to the Public Land Mobile Nerwork PLMN order in recent registered Public Land Mobile Nerwork RRPLMN list.
According to above flow process registered network, as succeed in registration, resident this network of mobile terminal success, searches anastomose bundle, upgrades positional information to recent registered Public Land Mobile Nerwork RRPLMN list simultaneously.As register unsuccessfully, then there is the network of signal randomly ordered to remaining; Then attempt in order registered network, if succeeded in registration, resident this network of mobile terminal success, searches anastomose bundle, upgrades positional information to recent registered Public Land Mobile Nerwork RRPLMN list simultaneously; As register unsuccessfully, mobile terminal is in urgent call state.
The geographical location information at the current place of this mobile terminal more than obtaining can be expressed as (X, Y), and the method that obtains mobile terminal geographic position information can be by systems such as GPS or big-dipper satellites, and current most mobile terminals all have positioning function.
The structure of the recent registered Public Land Mobile Nerwork RRPLMN list is here as shown in table 2, and this is a two-dimensional storage structure.Each Public Land Mobile Nerwork PLMN id records the geographical location information of nearest N the terminal of once successfully registering,
RRPLMN list structure in table 2 the method for the invention
| PLMN?id?1 | X 11,Y 11 | X 12,Y 12 | X 13,Y 13 | ... |
| PLMN?id?2 | X 21,Y 21 | X 22，Y 22 | X 23,Y 23 | ... |
| PLMN?id?3 | X 31,Y 31 | X 32,Y 32 | X 33,Y 33 | ... |
| ... | ... | ... | ... | ? |
If exceeded N information, just geographical location information the oldest on the time is deleted.Each geographical location information represents with (Xpi, Ypi), the residing longitude of mobile terminal and latitude when Xpi and Ypi represent respectively to be successfully registered to for the i time Public Land Mobile Nerwork PLMN ID p.The maximum number of PLMN id represents with M.RRPLMN list can be kept in SIM card, also can be kept on the read-only storage of mobile terminal itself.
The method of calculating the distance between the geographical position of recording in mobile terminal current location and recent registered Public Land Mobile Nerwork RRPLMN list can adopt formula one, mobile terminal can calculate position that the Public Land Mobile Nerwork PLMN once succeeding in registration that records in all recent registered Public Land Mobile Nerwork RRPLMN lists is corresponding and the distance of mobile terminal position at present, retain that the shortest range information, as the reference distance Dp of this network.
The computing formula of concrete distance is:
i=1～N, p=1 ~ M (formula one)
Wherein, X and Y represent respectively longitude and the latitude that the geographical position at the current place of this mobile terminal is corresponding, the residing longitude of mobile terminal and latitude when Xpi and Ypi represent respectively to be successfully registered to for the i time Public Land Mobile Nerwork PLMN ID p.The value of N and M can decide according to the performance of the size of memory space and mobile terminal itself.After all distances are all calculated, arrange the priority of all-network according to reference distance Dp.The Public Land Mobile Nerwork PLMN that Dp is less, its priority is larger.Mobile terminal carries out the trial of Public Land Mobile Nerwork PLMN registration according to this order, once certain network registry success, exit cut-and-try process, and again the geographical location information of current mobile terminal is updated in recent registered Public Land Mobile Nerwork RRPLMN list.
As all Public Land Mobile Nerwork PLMN in recent registered Public Land Mobile Nerwork RRPLMN list cannot succeed in registration, then according to the requirement of 3GPP, attempt the good Public Land Mobile Nerwork PLMN of remaining quality.
In sum, the positioning function that the method for fast search Public Land Mobile Nerwork of the present invention has utilized present smart mobile phone generally to have, adopt recent registered Public Land Mobile Nerwork RRPLMN list to obtain positional information the storage of current mobile terminal, then calculate the distance between the geographical position of recording in mobile terminal current location and recent registered Public Land Mobile Nerwork RRPLMN list, and far and near less according to distance according to calculate distance, priority is higher to sort to the Public Land Mobile Nerwork PLMN in recent registered Public Land Mobile Nerwork RRPLMN list, finally attempt registered network according to the Public Land Mobile Nerwork PLMN order in recent registered Public Land Mobile Nerwork RRPLMN list.In the situation that mobile terminal leaves belonging area network, the shortening of maximum possible in successful time of new network registry, the possibility of having been refused by network while also having reduced to a certain extent terminal registration network.This has obvious benefit for the continuity that promotes user's experience, saving power for terminal and keep terminal to do business.As seen from the above description, the present invention has improved mobile terminal and has searched the performance of net registration from many aspects.
The foregoing is only preferably embodiment of the present invention; but protection scope of the present invention is not limited to this; any be familiar with those skilled in the art the present invention disclose technical scope in, the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (8)
1. a method for fast search Public Land Mobile Nerwork, is characterized in that, comprising:
In the time that entering new Public Land Mobile Nerwork PLMN region, mobile terminal initiates to search net;
Attempt the registered Public Land Mobile Nerwork RPLMN of registration, if succeeded in registration, obtain the current geographical location information of mobile terminal, and be stored in recent registered Public Land Mobile Nerwork RRPLMN list;
As it is failed to register registered Public Land Mobile Nerwork RPLMN, attempt the ownership place Public Land Mobile Nerwork EHPLMN of registration ownership place Public Land Mobile Nerwork HPLMN or equivalence, as succeed in registration, obtain the current geographical location information of mobile terminal, and be stored in recent registered Public Land Mobile Nerwork RRPLMN list;
As failed in the ownership place Public Land Mobile Nerwork EHPLMN that registers ownership place Public Land Mobile Nerwork HPLMN or equivalence, attempt the Public Land Mobile Nerwork UPLMN of registered user's control or the Public Land Mobile Nerwork OPLMN that operator controls, as succeed in registration, obtain the current geographical location information of mobile terminal, and be stored in recent registered Public Land Mobile Nerwork RRPLMN list;
As the Public Land Mobile Nerwork OPLMN failure of the Public Land Mobile Nerwork UPLMN of registered user's control or operator's control, whether access recent registered Public Land Mobile Nerwork RRPLMN list is empty, as be empty, there is the network of signal randomly ordered to residue, attempt in order registered network;
As access recent registered Public Land Mobile Nerwork RRPLMN list not for empty:
Obtain the positional information of current mobile terminal;
Calculate the distance between the geographical position of recording in mobile terminal current location and recent registered Public Land Mobile Nerwork RRPLMN list;
Far and near less according to distance according to calculate distance to the Public Land Mobile Nerwork PLMN in recent registered Public Land Mobile Nerwork RRPLMN list, priority is higher to sort;
Attempt registered network according to the Public Land Mobile Nerwork PLMN order in recent registered Public Land Mobile Nerwork RRPLMN list.
2. the method for a kind of fast search Public Land Mobile Nerwork according to claim 1, it is characterized in that: described mobile terminal is often once searched net and succeeded in registration, described recent registered Public Land Mobile Nerwork RRPLMN list stores corresponding Public Land Mobile Nerwork PLMN positional information.
3. the method for a kind of fast search Public Land Mobile Nerwork according to claim 1, it is characterized in that: described recent registered Public Land Mobile Nerwork RRPLMN list is a two-dimensional storage structure, the Public Land Mobile Nerwork PLMN positional information of its storage comprises the longitude of mobile terminal and the comprehensive co-ordinate position information that latitude forms.
4. according to the method for a kind of fast search Public Land Mobile Nerwork described in claim 2 or 3, it is characterized in that: the method for the distance between the geographical position of recording in described calculating mobile terminal current location and recent registered Public Land Mobile Nerwork RRPLMN list is
i=1 ~ N, p=1 ~ M, wherein X and Y represent respectively corresponding longitude and the latitude in geographical position at the current place of this mobile terminal, the residing longitude of mobile terminal and latitude when Xpi and Ypi represent respectively to be successfully registered to for the i time Public Land Mobile Nerwork PLMN ID p.The value of N and M decides according to the performance of the size of memory space and mobile terminal itself.
5. the method for a kind of fast search Public Land Mobile Nerwork according to claim 4, it is characterized in that: attempt after registered network according to the Public Land Mobile Nerwork PLMN order in recent registered Public Land Mobile Nerwork RRPLMN list, as succeed in registration, resident this network of mobile terminal success, search anastomose bundle, upgrade positional information to recent registered Public Land Mobile Nerwork RRPLMN list simultaneously; As register unsuccessfully, and then there is the network of signal randomly ordered to remaining, then attempt in order registered network.
6. the method for a kind of fast search Public Land Mobile Nerwork according to claim 5, is characterized in that: described recent registered Public Land Mobile Nerwork RRPLMN list is kept in SIM card, or, be kept on the read-only storage of mobile terminal itself.
7. the method for a kind of fast search Public Land Mobile Nerwork according to claim 6, is characterized in that: obtain the current geographical location information of described mobile terminal by GPS or Beidou satellite system.
8. the method for a kind of fast search Public Land Mobile Nerwork according to claim 4, it is characterized in that: described mobile terminal retains position that the Public Land Mobile Nerwork PLMN once succeeding in registration that records in the recent registered Public Land Mobile Nerwork RRPLMN list of gained is as calculated corresponding and that the shortest range information in the distance of mobile terminal position at present, as the reference distance Dp of this network.
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