CN101507335A - Cell search method, apparatus and system in a cellular communications system - Google Patents
Cell search method, apparatus and system in a cellular communications system Download PDFInfo
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- CN101507335A CN101507335A CNA2007800008410A CN200780000841A CN101507335A CN 101507335 A CN101507335 A CN 101507335A CN A2007800008410 A CNA2007800008410 A CN A2007800008410A CN 200780000841 A CN200780000841 A CN 200780000841A CN 101507335 A CN101507335 A CN 101507335A
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/32—Hierarchical cell structures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/18—Selecting a network or a communication service
Abstract
The invention concerns a method for cell search of the type performed in conjunction with selecting a Public Land Mobile Network (PLMN) in a cellular communications system, wherein the cellular communications system includes at least one terminal and at least two cells, the method including:- said at least one terminal obtaining, in any of said at least two cells, data on at least one candidate camping cell, - using said data for cell search. The method is distinguished by:- in said step of obtaining data, obtaining data including information on preference for at least one of said at least one candidate camping cell,- in said step of cell search, searching a cell based on said information on preference. The invention also concerns a terminal, a base station and a cellular communications system.
Description
Technical field
The present invention relates to the small region search method in a kind of cellular communication system.The invention still further relates to a kind of cellular communication system and terminal wherein and base station.
Background technology
5.1 public land mobile network (Public Land Mobile Network, PLMN) background
PLMN is a cellular system that comprises many sub-districts, subscriber equipmenies such as mobile phone in the sub-district or terminal (User Equipment, UE) the necessary sub-district of selecting an access service.PLMN can use one or more wireless access technologys (Radio Access Technology, RAT) such as, second generation global system for mobile communications (2G Global System for Mobile Communications, 2G GSM), third generation Universal Terrestrial Radio Access Network (3G Universal Terrestrial Radio Access Network, 3GUTRAN) or third generation Long Term Evolution (3G Long Term Evolution, 3G LTE).UE can find several sub-districts that belong to different PLMN and the several sub-districts that belong to same PLMN usually a position.PLMN can (Hierarchical Cell Structure organizes the sub-district in HCS) at so-called classification cell structure shown in Figure 1.Under idle pulley, UE must select its detected sub-district of energy, and UE can be resident for access service subsequently in this sub-district.5.2 joint has been introduced the idle pulley flow process, 5.3 joints have further been introduced the Cell searching flow process.
5.2 idle pulley flow process general introduction
The basic procedure and the rule of how in 3G network, to carry out cell selecting have been summarized in the 3GPP standard respectively, specifically list of references [1], [2], [3] and [4] that can enclose referring to this specification end.These flow processs have been described in the context of universal mobile telecommunications system (UMTS).But much these flow processs also are applicable to other digital cellular wireless systems.An example of this system is GSM.
When UE opens, just selected a PLMN.In order to select a PLMN, Cell searching must be effectively, and the PLMN that can read the sub-district so at least identifies and makes a choice.Then, UE searches for the suitable cell among the selected PLMN, selects to provide the sub-district of available service, and be tuned to its control channel.This selection is considered to " resident this sub-district ".If necessary, UE can register it in the registration zone of selected sub-district by Non-Access Stratum (NAS) registering flow path and exist, and as the result of successful location registers, selected PLMN has become registration PLMN[5].
If UE has found a sub-district that is more suitable for, can that sub-district of gravity treatment and wherein resident.If new sub-district is positioned at a different registration zone, then to carry out location registers.
If necessary, UE can search for the PLMN of higher priority and the suitable sub-district of search when NAS selects another PLMN with the time interval of rule.
If UE loses the covering of the PLMN that registers, can select a new PLMN (automatic mode) automatically, it is available perhaps indicating which PLMN of user, carries out artificial selection (artificial mode) then.
The purpose of idle pulley persistent district has four:
A) UE can be from PLMN receiving system information.
B) if registration back UE wishes to set up Radio Resource control (RRC) to be connected, it can be realized by access network on the control channel of persistent district at first.
C) if PLMN receives the calling of registered UE, it knows the sub-district registration zone that (in most cases) user is resident.Then, PLMN sends " paging " message of UE on all sub-district control channels of registration zone.Since UE be tuned in the registration zone on the control channel of sub-district, so can receive this beep-page message and can on control channel, respond this message.
D) UE can receive cell broadcast service.
If UE can not find a suitable cell resident, or subscriber identity module (User SubscriberIdentity Module, USIM) do not insert, or location registers failure, this UE attempts a resident sub-district and identifies regardless of PLMN, and enter " restriction service " state, this moment, UE can only attempt carrying out urgent call.
The idle pulley task can be subdivided into three processes:
-PLMN selects;
-cell selecting and gravity treatment;
-location registers.
Relation between these processes has been described among Fig. 2.
5.3 cell selecting flow process general introduction
(Non-Access Stratum NAS) can control the wireless access technology (RAT) that carry out cell selecting to Non-Access Stratum, for example controls by indicating relevant RAT of selected PLMN and maintenance to forbid that registration zone tabulation and equivalent PLMN tabulate.UE measures and suitable cell of cell selecting Standard Selection and wireless-access mode based on idle pulley.
In order to quicken the cell selecting process, several RAT information of storage all are available on UE.
When residing in a sub-district, UE should search for better sub-district regularly according to cell reselection criteria.If find a better sub-district, then select this sub-district.Cell change may mean change RAT.
For normal service, UE must a resident suitable cell, be tuned on the control channel of that sub-district, so UE can:
-reception is from the system information of PLMN;
Reception is from the registration zone information of PLMN, such as lane place and route district; With
Receive other AS and NAS information;
If-registered:
Reception is from paging and the notification message of PLMN; With
Initiate the exhalation of UE or the foundation of other actions.
In conjunction with Fig. 3, reference letter is described as follows:
A) cell information of storing for PLMN
B) cell information of not storing for PLMN
C) find suitable cell
D) do not find suitable cell
E) leave idle pulley
F) returning to idle mode
G) registration of NAS indication refusal on selected PLMN
H) trigger
As shown in Figure 3, UE can use in following two search routine one:
A) initial cell is selected
This flow process does not require knows that in advance (Radio Frequency, RF) channel is the UTRA carrier wave to which radio frequency.UE is according to all the RF channels in its ability scanning UTRA frequency band, thus the discovery suitable cell.On each carrier wave, UE only needs the strongest sub-district of search signal.If find a suitable cell, then select this sub-district.
B) stored information cell selecting
The carrier wave frequency information of this requirements of process storage, alternatively, also need be such as the cell parameter information of scrambler and so on, these information are from the measuring control information element that had before received.In case find a suitable cell, UE just selects this sub-district.If do not find suitable cell, then begin to initiate the cell selecting flow process.
Use the purpose of store information cell selecting flow process to be, this flow process can be selected faster than initial cell.UE can with less time search for suitable cell and more F.F. go into resident state, thereby can begin to get ready for service.
5.4 stored information cell selecting flow process
The main information source is the information of each Cell Broadcast CB.In UTRAN, comprise Master Information Block (MasterInformation Block, MIB) and many system information blocks (System Information Blocks, SIB).The available information of MIB and SIB is exemplified below:
The PLMN sign of sub-district,
Insert restriction, such as forbidding and insert rank and forbid in the sub-district,
" cell information tabulation frequently "
" inter-frequency cell information list "
" cell information tabulation between RAT "
" use of classification cell structure (HCS) ",
" HCS adjacent cell information "
5.5 problem
Along with increasing wireless access technology (RAT) is connected to the ability of these different RAT such as the frequency spectrum and the UE (such as mobile phone or terminal) of Long Term Evolution (LTE), cellular system on different frequency increase, UE can from PLMN collect about the information of sub-district and neighbor cell also more and more widely.UE also can detect increasing sub-district usually.This will cause in order to carry out Cell searching, and UE need select the sub-district searched for from more and more sub-districts.Therefore, the cell selecting flow process can unacceptablely be finished in long-time at one under a lot of situations, and Chang time feasiblely can not initiate to have served like this.Select equally so for PLMN,, so just can do selection because must search cell identify with the PLMN that finds the sub-district at least.
Except these problems, industry is just entering the microsize sub-district epoch (the so-called Femto cell that is used for home cell deployment and indoor application) with low power amplifier.Under such deployment, cannot guarantee that it is exactly available that such honeycomb covers as long as open travelling carriage.Suppose that the network operator still attempts finishing grand/umbrella sub-district to indoor covering, travelling carriage can be found oneself to be by searching for that a lot of sub-districts are come but not to attempt obtaining direct service from umbrella or macrocellular layer.
Store information Cell searching flow process alleviates the slow problem of Cell searching by use the cell information of storage in search.Yet because the outburst of the above-mentioned available cell quantity of expection, in many cases, the Cell searching duration remains a problem.As previously mentioned, this will unacceptably influence PLMN selection and cell selecting duration.
Summary of the invention
An object of the present invention is to propose a kind of solution that alleviates the prior art problem.Therefore, main purpose is for providing a kind of method that allows to carry out in the cellular radio PLMN selection faster and cell selecting.
Main thought of the present invention is, network can be informed the additional information of some sub-districts, these information can be that UE (such as mobile phone or terminal) offers help when finding and selecting suitable cell and selecting PLMN, and this situation occurs in that UE opens and loses after the covering because of selected PLMN can not find.Select and cell selecting for PLMN, this all will reduce the duration of finding suitable cell, thereby shorten the time that UE can not set up service.
Suppose that UE has collected the network information that comprises different districts information in the very first time of opening.Its mode can be by measure and set up the adjacent cell information tabulation of himself from network reception information of specific cell (current selection sub-district and its adjacent cell information) or by the user.
This information comprises a lot of candidates.For accelerating cell searching and reduce to find time of suitable cell, must reduce the number of candidate cell or point out for which sub-district of Cell searching flow process more likely property become suitable cell.The present invention finishes by send the preferred information in certain sub-district to UE.Can use accomplished in many ways among the present invention, such as pass through dedicated signaling by broadcast message or when the UE deviated from network.
Have, if when being realized by PLMN, the current information that UE can collect comprises very limited HCS information again.Can not determine that such as the user which neighbor cell is to cover a last bigger sub-district of inserting the sub-district.And this bigger sub-district is most likely available, but can not accurately be distinguished by current available information as previously mentioned.The present invention avoids this problem by sending preference information, can at first search for preferred sub-district by this method.
The present invention solves in the terminal, base station and the cellular communication system that have claim 16,19 and 20 features respectively or has reduced prior art problems.
Dependent claims further discloses favourable aspect of the present invention.
Description of drawings
Below in conjunction with accompanying drawing embodiment as illustration of the present invention is described, wherein
Fig. 1 is for having the cellular system schematic diagram of classification cell structure (HCS).
Fig. 2 is whole idle pulley processes of 3GPP Universal Terrestrial Radio Access Network (UTRAN).
Fig. 3 is that the idle mode cell among the 3GPP UTRAN is selected and the gravity treatment flow chart.
How Fig. 4 revises an example of the existing whole idle pulley processes among the 3GPP UTRAN for the present invention.
Fig. 5 be HCS cell layer and neighbor cell pointer and
Fig. 6 is the cellular communication system example that has two base stations and a terminal, and wherein each base station constitutes a sub-district.
Embodiment
7.1 general introduction
In the very first time of opening, UE must carry out initial cell and select flow process.Then, UE can obtain the information of network from the clear and definite signaling that network sends, and perhaps the measurement by UE self replenishes the described information of obtaining.When opening later on, UE uses this information and carries out the stored information cell selecting again, and this selection will be selected faster than initial cell usually.Stored information cell selecting flow process also can be used behind the selected PLMN coverage loss of its registration at UE.
The present invention program is intended to help UE in cell selecting flow process and the PLMN selection, and the current information purpose that network provides is to assist in cell selecting and sub-district gravity treatment.Existing scheme sends the tabulation fully of a neighbor cell by the channel of the resident selected sub-district of UE.
The present invention has set forth a kind of method of Cell searching.Such Cell searching (also is called subscriber equipment (User Equipment, UE)) and selects PLMN such as following step to carry out, promptly after terminal is opened, and coverage loss occurs, carry out when selected PLMN can't find together with terminal in the cellular communication system.This cellular communication system comprises at least one terminal and at least two sub-districts.This method may further comprise the steps:
At least one terminal obtains the data of at least one candidate's persistent district in any one at least two sub-districts, and
Carry out Cell searching with these data.
Further, in obtaining the step of data, obtain the data of the preference information that comprises one of at least two candidate's persistent districts; In cell search procedure, based on the preference information search cell.
Therefore, among the present invention, network indicates preferably in the PLMN/ cell selecting or the most approaching available sub-district, and terminal is used the preference information search cell then, and search can be faster than prior art like this.
The conceptual diagram of an example of Fig. 4 position the present invention, wherein a) expression comprises the data of preference information, sends these data and assists terminal to carry out PLMN respectively to select and cell selecting.
Network also may provide more information comprise the size of HCS configuration, current area and neighbor cell and reconnect current sub-district and neighbor cell and/or layer probability etc.
Small region search method of the present invention PLMN is selected and cell selecting easier.
Therefore, select and the stored information selection for PLMN, flow process has been reinforced, and UE is based on preferred search cell, such as the sub-district of the highest preferred or priority that has based on fresh information like this.Can increase the probability that finds suitable cell fast like this.
Suppose that UE identical geographic area when closing with it normally opens, before sleep, close UE and start in the morning such as the user.
7.2 inform native region priority
In current UTRAN, network can be informed 32 UTRAN frequency division multiplexings (FDD) and other 32 GSM EDGE Radio Access Network networks (GERAN) neighbor cell.UE also can access the information of 32 UTRAN time division multiplexinges (TDD) sub-district.96 sub-districts have so been reached.Add LTE, sum also has growth, may add other 32 neighbor cells.
Among the present invention, which sub-district network indicates by means of signaling is sub-district preferred or that most probable is fit to.Can realize with several method.
When the identification suitable cell, the inventive method is discerned each member with the following step:
The preference information of being obtained presents with the hierarchical sequential (HS) form in sub-district.Therefore, the order of use adjacent cell is represented preferred (if sending to UE) of sub-district.
The preference information of being obtained presents with the form of the exclusive preferred factor in sub-district.Therefore, use the preferred factor just can send cell information to terminal (or user terminal) with any order.
Inform the group id that the sub-district is affiliated
Inform in each sub-district a value except cell ID, this value can receive unique identification sub-district in the sub-district of information simultaneously at UE, and to use this value be reference value in the tabulation.
Have, in order to organize the data about one or more candidate's persistent districts, in the different step of the inventive method, may obtain the data about at least one candidate's persistent district, this candidate's persistent district is included at least one tabulation.After receiving such tabulation, a diverse ways of the present invention has comprised a step in the cell selecting, in the time of candidate's persistent district of search, can preferably travel through at least one tabulation according to the sub-district.
Can make up the tabulation that comprises candidate's persistent district with diverse ways.In the different step of the inventive method, may obtain at least one tabulation that comprises all neighbor cells of sub-district.In addition, also can use the tabulation that comprises all neighbor cell subclass of sub-district.Therefore, the content quantity in the present invention's tabulation can change.
In addition, can use the independent tabulation irrelevant with existing list.
The list content of obtaining in the inventive method step can change.For example, tabulation can comprise the sub-district of same wireless access technology.In addition, tabulation also can comprise the sub-district of different radio access technologies.
Complete cell ID can be used in sub-district in the tabulation, tabulation that also can the compressed candidature persistent district.In the preferred steps of the inventive method, can obtain at least one tabulation to small part compression, this tabulation is by only stating at least one tabulation member and the tabulation member's who defines fully different acquisition the in a place.In another preferred steps, the form of least significant bit group that can be by complete cell ID provides difference.Therefore can inform the cell ID of compression in the following manner, such as providing a complete cell ID, and only provide the difference of the least significant bit group of the least significant bit group of complete cell ID or first cell ID for other sub-districts.
Having under the situation of a plurality of tabulations, in the different step of the inventive method, can obtain in a plurality of tabulations at least one the tabulation, this tabulation no matter any position can comprise the indication that forwards another tabulation when carrying out Cell searching wherein to, such as the terminal point mark.Can at first search for the most preferred sub-district of each tabulation like this.If do not find these sub-districts, continue after the indication of search meeting in running into tabulation.Possibly, can send an indication to terminal, this indication notice terminal according to which type of priority order use different tabulations (such as, UTRAN FDD tabulation, GERAN tabulation UTRAN TDD tabulation or the like then more then).
According to the inventive method different step, can preference information be informed at least one terminal: broadcasting in current area, leave that special use is informed and get back to informing of idle pulley from connection mode according to any one realization in the following method group.Basically, can use any appropriate method and suitable opportunity of informing preference information.
7.3 inform preferred HCS layer and sub-district
In current UTRAN network, network is only informed the indication of HCS priority valve (0-7) as the HCS layer.Neighbor cell list can comprise and one or morely has the neighbor cell of identical HCS priority valve and have than the current selection sub-district neighbor cell of high priority more.UE can not know the little area overlapping of which sub-district and current selection in these more high-rise sub-districts.The present invention proposes, and network is informed which sub-district and current selected little area overlapping in each higher HCS layer.
Among Fig. 5, with two HCS layer configuration networks (purpose for the purpose of simplifying the description, but also can be provided with more multi-layered).The sub-district of the current selection of UE is arranged in the HCS second layer and has little square pattern.In current UTRAN network, network can be informed a neighbor cell list, and this neighbor cell list comprises all (point, dotted line, wave and square, 25 sub-districts altogether) sub-districts that have a pattern.In the solution of the present invention, network can point out that the dotted line sub-district in the higher HCS ground floor is most probable suitable cell after opening when terminal.Network also can be indicated immediate neighbor cell in the HCS second layer, and promptly the waved pattern sub-district is most probable suitable cell.
In addition, can to indicate which HCS layer of UE be the optimal selection of carrying out the Cell searching flow process to network.
7.4 inform the size of current area and/or layer
For the whole sub-districts in the difference tabulation or the subclass of sub-district, network can be indicated the size of its HCS layer or clear and definite sub-district.Bigger sub-district has higher probability and is found with as suitable cell.If this sub-district is not in optimal cell layer, cell re-selection procedure will consider carries out necessary gravity treatment.Main meaning is a connecting system quickly.
7.5 point out to reconnect to the feasibility of sub-district and/or layer
For each sub-district of cell list separately adds probability factor.
7.6 inform the method for additional information
Network can be informed this fresh information of sub-district with diverse ways.Broadcasting in current area, leave that special use is informed and get back to informing of idle pulley from connection mode.
7.7 the different step of the inventive method
The different step of the invention described above method can merge or carry out with suitable order.Certainly, condition is according to satisfying the step requirement of using with another step of the inventive method such as terminal and the available measurements such as candidate's persistent district tabulation with certain format.
8 other embodiment of the present invention
In conjunction with Fig. 6 other embodiment of the present invention are described now.In Fig. 6,1 expression cellular communication system, 2 expressions constitute the base station of sub-district 4,3 expression terminals.
Therefore, the present invention includes the terminal 3 in a kind of cellular communication system 1, be used at cellular communication system 1 together with this class Cell searching of selecting PLMN to carry out, cellular communication system comprises at least two sub-districts 4,
Terminal 3 is used for obtaining in any one at least two sub-districts 4 data of at least one candidate's persistent district 4,
Terminal 3 is used to use these data to carry out Cell searching, wherein
When obtaining data, terminal 3 is used for obtaining the data of the preference information that comprises at least two candidate's persistent district 4 at least one sub-districts,
When using above-mentioned data to carry out Cell searching, terminal 3 is based on preference information search cell 4.Like this, can in terminal, carry out Cell searching quickly.
In the different embodiment of terminal of the present invention, terminal is carried out Cell searching and is selected PLMN.In addition, terminal is carried out Cell searching and is selected the sub-district.Like this, terminal can reduce PLMN and the duration of selecting.
Terminal of the present invention comprises the member that carries out any step of the inventive method.Certainly, a bit requiring is that this step relates to terminal.
The present invention also comprises the base station 2 in a kind of cellular communication system 1, is used for participating in this type of Cell searching at cellular communication system 1 together with selection PLMN, and cellular communication system comprises at least two sub-districts 4,
When sending data, base station 2 is used for sending the data of the preference information that comprises one of at least two candidate's persistent districts 4.
Base station of the present invention can be used for carrying out any step of the inventive method.Certainly, a bit requiring is that step relates to the base station.
Have, the present invention also comprises a kind of cellular communication system 1 again, and PLMN carries out this type of Cell searching in the cellular communication system 1 together with selecting, and cellular communication system comprises at least one terminal 3 and at least two sub-districts 4,
At least one terminal 3 obtains the data of at least one candidate's persistent district 4 in any one at least two sub-districts 4,
Terminal 3 uses these data to carry out Cell searching, wherein
When obtaining data, terminal 3 is obtained the data of the preference information that one of comprises at least two candidate's persistent districts 4,
State when carrying out Cell searching when use, terminal 3 is based on preference information search cell 4.
Cellular communication system of the present invention carries out any step of the inventive method.
9 use and substitute
The present invention can be used for existing any communication network of mobility and Cell searching.
10 lists of references
[1]3GPP?TS?25.304，v6.9.0，“User?Equipment(UE)procedures?in?idle?mode?andprocedures?for?cell?reselection?in?connected?mode”
[2]3GPP?TS?23.122，＂NAS?functions?related?to?Mobile?Station(MS)in?idle?mode＂
[3]3GPP?TS?43.022，“Functions?related?to?Mobile?Station?in?idle?mode?and?groupreceive?mode＂
[4]3GPP?TS?25.214，＂Physical?layer?procedures(FDD)＂
[5]3GPP?TS?25.331，v6.11.0，＂Radio?Resource?Control(RRC)；ProtocolSpecification＂
[6]3GPP?TDoc?R2-063305，“Reduction?of?neighbour?cell?list?information?sent?toUE”
[7]3GPP?TS?36.300，v0.2.0，“Evolved?Universal?Terrestrial?Radio?Access(E-UTRAN)and?Evolved?Universal?Terrestrial?Radio?Access?Network(E-UTRAN)(Release?8)”，2006-11
[8]3GPP?TR?25.913，v7.0.0，“Requirements?for?Evolved?UTRA(E-UTRA)andEvolved?UTRAN(E-UTRAN)(Release?7)”，2005-06
[9]UK?Patent?Application?GB?2?420?937“A?mobile?radio?communications?deviceconnecting?to?a?network?of?a?radio?access?technology(RAT)”of?the?type?performedwhen?selecting?a?new?Public?Land?Mobile?Network(PLMN)in?a?cellularcommunications?system
Claims (20)
1, the small region search method in a kind of cellular communication system 1, such small region search method selects public land mobile network to carry out together with terminal, and wherein said cellular communication system 1 comprises at least one terminal 3 and at least two sub-districts 4, and described method comprises:
Described at least one terminal 3 obtains the data of at least one candidate's persistent district 4 at least in any one of described two sub-districts 4,
Use described data to carry out Cell searching,
It is characterized in that,
In the described step of obtaining data, comprise the data of the preference information of one of them sub-district in described at least two candidate's persistent districts 4 in the data of obtaining,
In described cell search procedure, based on described preference information search cell 4.
2, small region search method according to claim 1 is characterized in that, wherein
Carry out described Cell searching to select public land mobile network PLMN.
3, small region search method according to claim 1, wherein,
Carry out described Cell searching to select the sub-district.
4, according to the described small region search method of claim 1,2 or 3, wherein,
The described preference information of obtaining presents with the hierarchical sequential (HS) form in sub-district.
5, according to the described small region search method of claim 1,2 or 3, wherein,
The described preference information of obtaining presents with the form of the exclusive preferred factor in sub-district.
6, small region search method according to claim 1, wherein,
Obtain the data of at least one candidate's persistent district, described at least one candidate's persistent district is included at least one tabulation.
7, small region search method according to claim 6, wherein,
In cell selecting, in the time of search candidate persistent district, preferably travel through described at least one tabulation according to the sub-district.
8, small region search method according to claim 6, wherein,
Obtain the tabulation that at least one comprises all neighbor cells of sub-district.
9, small region search method according to claim 6, wherein,
Obtain the tabulation that at least one comprises a subclass of all neighbor cells of sub-district.
10, according to any described small region search method among the claim 6-9, wherein,
Obtain the tabulation that at least one comprises same wireless access technology sub-district.
11, according to any described small region search method among the claim 6-9, wherein,
Obtain the tabulation that at least one comprises the different radio access technologies sub-district.
12, according to any described small region search method among the claim 6-9, wherein,
Obtain at least one tabulation, this tabulation is compressed with the tabulation member's of definition fully the different parts of carrying out by only stating at least one tabulation member.
13, small region search method according to claim 12, wherein,
Obtain at least one tabulation, this tabulation is partly compressed by the given difference of the form of the least significant bit (LSB) of complete cell ID at least.
14, according to any described small region search method among the claim 6-9, wherein,
Having under the situation of a plurality of tabulations, obtaining at least one tabulation in described a plurality of tabulation, the no matter any position in described at least one tabulation comprises when carrying out Cell searching from where forwarding the indication of another tabulation to.
15, according to the described small region search method of claim 1,2 or 3, wherein,
In the group any one by the following method informed described at least one terminal with described preference information: broadcasting in current area, leave that special use is informed and inform when connection mode is got back to idle pulley.
16, the terminal 3 in a kind of cellular communication system 1 is used at described cellular communication system 1 together with a class Cell searching of selecting PLMN to carry out, and described cellular communication system comprises at least two sub-districts 4,
Described terminal 3 is used for obtaining in any one in described at least two sub-districts 4 data of at least one candidate's persistent district 4,
Described terminal 3 is used to use described data to carry out Cell searching,
It is characterized in that,
When obtaining described data, described terminal 3 is used for obtaining the data of the preference information that comprises one of described at least two candidate's persistent districts 4,
When using described stating when carrying out Cell searching, described terminal 3 is used for based on described preference information search cell 4.
17, the terminal in the cellular communication system according to claim 16, wherein,
Described terminal is used to carry out described Cell searching and selects public land mobile network.
18, the terminal in the cellular communication system according to claim 16, wherein,
Described terminal is used to carry out described Cell searching and selects the sub-district.
19, the base station 2 in a kind of cellular communication system 1 is used for participating in a class Cell searching at described cellular communication system 1 together with the selection public land mobile network, and described cellular communication system comprises at least two sub-districts 4,
Described base station 2 is used for sending to terminal 3 data of at least one candidate's persistent district 4,
It is characterized in that,
When sending described data, described base station 2 is used for sending the data of the preference information that comprises described at least two candidate's persistent district 4 one of them sub-districts.
20, a kind of cellular communication system 1, public land mobile network carries out a class Cell searching in the described cellular communication system 1 together with selecting, and described cellular communication system comprises at least one terminal 3 and at least two sub-districts 4,
Described at least one terminal 3 is used for obtaining in any one in described at least two sub-districts 4 data of at least one candidate's persistent district 4,
Described terminal 3 is used to use described data to carry out Cell searching,
It is characterized in that,
When obtaining described data, described terminal 3 is used for obtaining the data of the preference information that comprises described at least two candidate's persistent district 4 one of them sub-districts,
When using described stating when carrying out Cell searching, described terminal 3 is used for based on described preference information search cell 4.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2007/000037 WO2008086648A1 (en) | 2007-01-08 | 2007-01-08 | Cell search in a cellular communications system |
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| Publication Number | Publication Date |
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| CN101507335A true CN101507335A (en) | 2009-08-12 |
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| CNA2007800008410A Pending CN101507335A (en) | 2007-01-08 | 2007-01-08 | Cell search method, apparatus and system in a cellular communications system |
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| WO (1) | WO2008086648A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106131926A (en) * | 2010-06-15 | 2016-11-16 | 瑞典爱立信有限公司 | Cell searching in heterogeneous network and measurement |
| US9749911B2 (en) | 2009-10-15 | 2017-08-29 | Huawei Technologies Co., Ltd. | Method and apparatus for obtaining information from target base station |
| CN108462972A (en) * | 2012-03-16 | 2018-08-28 | Lg 电子株式会社 | Method and apparatus for handling NAS signaling request in a wireless communication system |
| CN109565899A (en) * | 2016-08-12 | 2019-04-02 | 华为技术有限公司 | It was found that the method and terminal device of adjacent cell |
| CN110740488A (en) * | 2018-07-20 | 2020-01-31 | 维沃移动通信有限公司 | Method for cell selection, user equipment and network side equipment |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2360969B1 (en) * | 2010-02-23 | 2014-12-17 | BlackBerry Limited | A system and method for detecting a target cell in a cellular network |
| US8315189B2 (en) | 2010-02-23 | 2012-11-20 | Research In Motion Limited | System and method for detecting a target cell in a cellular network |
| EP2747490A1 (en) * | 2012-12-19 | 2014-06-25 | Koninklijke KPN N.V. | Session termination in an energy-efficient cellular wireless telecommunications system |
| WO2014169939A1 (en) * | 2013-04-15 | 2014-10-23 | Telefonaktiebolaget L M Ericsson (Publ) | Method, apparatus and computer program for cell search |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030015531A (en) * | 2001-08-16 | 2003-02-25 | 엘지전자 주식회사 | Cell selection improvement method for third generation terminal |
| CN100337483C (en) * | 2003-05-19 | 2007-09-12 | 华为技术有限公司 | Method for selecting cell for multi-mode user terminal |
| JP4415598B2 (en) * | 2003-07-30 | 2010-02-17 | 日本電気株式会社 | Mobile communication system, mobile station, and neighboring cell detection and monitoring method used therefor |
| KR100672471B1 (en) * | 2005-03-07 | 2007-01-24 | 엘지전자 주식회사 | Method for selecting cell in communication system |
-
2007
- 2007-01-08 CN CNA2007800008410A patent/CN101507335A/en active Pending
- 2007-01-08 WO PCT/CN2007/000037 patent/WO2008086648A1/en active Application Filing
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9749911B2 (en) | 2009-10-15 | 2017-08-29 | Huawei Technologies Co., Ltd. | Method and apparatus for obtaining information from target base station |
| CN106131926A (en) * | 2010-06-15 | 2016-11-16 | 瑞典爱立信有限公司 | Cell searching in heterogeneous network and measurement |
| CN106131926B (en) * | 2010-06-15 | 2021-02-02 | 瑞典爱立信有限公司 | Cell search and measurement in heterogeneous networks |
| CN108462972A (en) * | 2012-03-16 | 2018-08-28 | Lg 电子株式会社 | Method and apparatus for handling NAS signaling request in a wireless communication system |
| CN109565899A (en) * | 2016-08-12 | 2019-04-02 | 华为技术有限公司 | It was found that the method and terminal device of adjacent cell |
| CN110740488A (en) * | 2018-07-20 | 2020-01-31 | 维沃移动通信有限公司 | Method for cell selection, user equipment and network side equipment |
| CN110740488B (en) * | 2018-07-20 | 2020-10-16 | 维沃移动通信有限公司 | Method for cell selection, user equipment and network side equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008086648A1 (en) | 2008-07-24 |
| WO2008086648A8 (en) | 2009-03-05 |
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