A method to restrict the admittible cell of the user equipment
A kind of method and technology field limited user equipment access cell
The present invention relates to GSM, the method more particularly to limited in WCDMA WCDMA/ TD SDMAs TD-CDMA/ global system for mobile communications GSM/ third generation 3G systems the cell of UE accesses.Background technology
When UE access networks, pass through Security Function (security functions)Legitimacy of the authentication authentications mainly for UE in itself is carried out to UE, mainly passes through core net and HLR(Attaching position register)Interaction, obtain the UE tuple of authentication 5, and the information obtained from UE is compared, and judges UE legitimacy.
There is operator to propose base station from home Nodeb (HNodeb) or slightly Nodeb (femetoNodeb) or HBts concept at present, it is referred to as base station from home, as family provides small-sized Nodeb, the coverage of the Nodeb is smaller, carry user also small, but property right belongs to user, operator can provide rate, and bandwidth etc. is preferential.For this kind of Nodeb, to protect the power of the owner, it should which limiting only allows individual user to can access this Nodeb, and other lack of competence users should be rejected.
In current 3G frameworks, authentication is main in CN (core nets)Carry out, under current 3G frameworks, CN can not know the cell information where UE, RAU/LAU (Routing Area Update/Location Area Update can only typically be used, Routing Area Update/location area updating) mode of refusal carries out access restriction, but LAC (Location Area Code, position area coding)/RAC (Routing Area Code, Routing Area Code) number the whole network is limited, and base station from home(HNodeb/femetoNodeb/HBts) number is numerous, it is impossible to specify LAC for each base station from home, it is impossible to directly using this method.
Another method is (wirelessly to enter network in RAN)Side uses R C (Radio Resource Control, wireless heterogeneous networks)Refusal mode carries out access restriction, but UE may again come up in the short time in this case, cause ping-pong.The content of the invention
The technical problem to be solved in the present invention is to provide a kind of method limited UE access cells, the problem of existing cell access restriction method can not be applied to Home eNodeB access restriction or be likely to result in ping-pong is solved.
In order to solve the above-mentioned technical problem, the invention provides a kind of method limited user equipment access cell, comprise the following steps:Base station is set up after connection, is its dispensing position area coding LAC;User equipment (UE) initiates routing area updating RAU/location area updating LAU by the base station asks, wireless controller judges whether the UE has the access authority of the base station, if not provided, the wireless controller sends RAU/LAU refuse informations to the UE.
Further, the above method can also have the characteristics that, if the UE does not have the access authority of the base station, the wireless controller also judges whether the UE has and access authority of the base station with LAC other base stations, if not provided, the wireless controller just sends RAU/LAU refuse informations to the UE.
Further, the above method can also have the characteristics that, when being the base station distribution LAC, selection and the untapped LAC in base station of the same macrocell in the base station.
Further, the above method can also have the characteristics that, when being the base station distribution LAC, if having taken all available LAC with the base station of the same macrocell in the base station, one LAC at least used of selection distributes to the base station.
Further, the above method can also have the characteristics that, if having taken all available LAC with the base station of the same macrocell in the base station, check whether the base station abutted with the base station has unappropriated LAC, if, the LAC is distributed into the base station, otherwise, one LAC at least used of selection distributes to the base station.
Further, the above method can also have the characteristics that, if access authority of the UE without the base station, but have and access authority of the base station with LAC other base stations, it is allowed to the UE performs RAU/LAU processes.
Further, the above method can also have the characteristics that, if access authority of the UE without the base station, but have and access authority of the base station with LAC other base stations, perform after RAU/LAU processes, when the UE initiates business, perform and redirect Relocation processes.
Further, the above method can also have the characteristics that, after the UE initiations business, carry out
RAB assigns process, after RAB is assigned and the Relocation processes that redirect that perform are triggered when failing, or RAB is allocated successfully, performs redirection Relocation processes.
Further, the above method can also have the characteristics that, the wireless controller receives user equipment (UE) and initiated after routing area updating RAU/location area updating LAU requests, forwarding is not transmitted to core net CN, if forwarding, when wireless controller judges that the UE does not have access authority, directly abandoned for the non access stratum NAS message that CN is issued.
Further, the above method can also have the characteristics that, the wireless controller is radio network controller (RNC) or base station controller BSC, and the base station is base station from home HNodeb or femto base station femetoNodeb or base station from home HBts.
The present invention is combined by RAU/LAU Reject and relocation process, has reached that base station from home unauthorized user can be denied to other efficient cells, the impregnable purpose of authorized user.Summary of drawings
Fig. 1 show the flow chart that RNC (radio network controller/base station controller) distributes LAC for HNodeb;
Figure2It show unauthorized UE of the invention and is rejected flow chart;
Fig. 3 show unauthorized UE accesses of the invention and redirects flow chart;
Fig. 4 show RAB and assigns flow chart.
The better embodiment of the present invention
HNodeb number is numerous in general, and LAC numbers are limited, it is impossible to individually distribute a LAC for each base station from home (such as HNodeb), it is therefore necessary to consider LAC recycling problem.
This programme is considered as LAU/RAU Reject, and (LAU/RAU refuses)(redirected with relocation)With reference to mode.Specifically comprising Ru Xia Bu Sudden:
1) it is that it is randomly assigned LAC when HNodeb starts, different HNodeb LAC can be with identical, i.e. LAC can be with duplicate allocation;
Wherein, in order to reduce the probability that adjacent HNodeb repeats LAC, as far as possible different LAC are distributed for the HNodeb of same macrocell, when as HNodeb distributes LAC, the LAC not taken first under selection macrocell by other HNodeb, if all LAC have been taken by other HNodeb under the macrocell, a minimum LAC of minimum occupied i.e. occurrence number is selected for it;If the same LAC of several occurrence numbers, then one is therefrom randomly selected.
The above-mentioned method of salary distribution, can reduce UE and encounter the probability of the HNodeb that is used with this user with LAC HNodeb.
2) RRC (Radio Resource Control, wireless heterogeneous networks are initiated to HNodeb in UE)When connection, it is allowed to which its RRC connection is set up;
3) RNC is needed when UE carries out LAU/RAU, judge UE access authority, as long as judgment principle is UE with the access authority for accessing the HNodeb, either and the HNodeb with LAC any HNodeb access authority, the UE is then allowed to carry out normal LAU/RAU processes, otherwise RNC is by analog core net(CN LAU/RAU refusals) are sent to UE;
Run into HNodeb with LAC HNodeb when, UE will not be refused by LAU/RAU, be gone back home so as to avoid the occurrence of, due to LAI (Location Area Identificaton, Location Area Identification)In UE banned list(Forbidden list) in, cause the UE to cannot be introduced into the situation for the HNodeb having permission.
4) when being attached on HNodeb, the access authority without the HNodeb, but have and when the HNodeb initiates other business with the UE of LAC other HNodeb access authority, using relocation processes, UE is switched to macrocell.
UE for being attached to lack of competence HNodeb, can be switched to macrocell, therefore do not interfere with the use of the HNodeb users of oneself when the business of initiation by RNC.
It is further illustrated below by specific embodiment.
After HNodeb transport layers set up connection, RNC is HNodeb distribution LAC, as shown in figure 1, allocation strategy is:
1. search have built up connection and with HNodebs of the HNodeb with macrocell;
What 2. selection one had currently been connected does not make with the HNodeb with the HNodeb of macrocell
LAC, distributes to the HNodeb;
If 3. the current same macrocell HNodeb connected has occupied all available LAC, then check and currently connected and whether had untapped LAC with HNodeb macrocell and that the HNodeb is abutted, if, one is then therefrom randomly selected, the HNodeb is distributed to
If 4. the current same macrocell HNodeb connected has occupied all available LAC, and the HNodeb of HNodeb adjoinings also occupies all available LAC, then selects a LAC at least used to distribute to HNodeb.
Wherein, the LAC at least used refers to the LAC at least used by all HNodeb of same macrocell, or at least used with the HNodeb HNodeb abutted LA (:, or the LAC at least being used and at least being used with the HNodeb HNodeb abutted by all HNodeb of same macrocell;.
If 5. the LAC at least used has more than one, randomly choosing one.
In an alternative embodiment of the invention, the HNodeb high numbers that one macrocell is generally comprised, therefore, in the specific implementation, above-mentioned steps 2 can be omitted, it can not check whether all HNodeb under same macrocell occupy all available LAC, whether only check the HNodeb of HNodeb adjoinings has untapped LAC, if, then select a untapped LAC of adjacent HNodeb, distribute to HNodeb, so as to ensure that its LAC of adjacent HNodeb is different, in Bu Sudden 4, if the HNodeb of HNodeb adjoinings also occupies all available LAC, then a LAC at least used is selected to distribute to HNodeb.
Fig. 2 is shown after for HNodeb distribution LAC, and unauthorized UE initiates LAU/RAU flow chart, and the wherein UE does not have yet and accessed access authority of the HNodeb with LAC other HNodeb.
210, UE initiate ROUTING/LOCATION AREA UPDATE REQUST, and (routing area/location updates request)Message;
220, RNC parsing NAS (Non-Access Stratums)Layer signaling, obtains the NAS layers of information;K C judge whether UE has this HNodeb access authority, if not provided, determining whether that the UE is
It is no that there is other and access authority of this HNodeb with LAC other HNodeb, if UE is without authority, into step 230;
(routing area/location updates refusal)Message.
Further, in realization, RAU/LAU refusals can be by CN controls, can also be by RNC controls.If by CN controls, it is necessary to change Iu mouthfuls.
If by RNC controls, RNC has following two realize to select:
The first:The ROUTING/LOCATION AREA UPDATE REQUST Slow that RNC sends UE are rushed, and such as bright judgement UE does not have access authority, then directly simulation CN sends ROUTING/LOCATION AREA UPDATE REJECT to UE.In CN, it never received UE ROUTING/LOCATION AREA UPDATE REQUST requests.Only in the case where UE has permission, ROUTING/LOCATION AREA UPDATE REQUST can be just sent to C o by R C
Second:The UE ROUTING/LOCATION AREA UPDATE REQUST sent are directly forwarded to CN by RNC, if it is determined that the UE does not have access authority, then directly simulation CN sends ROUTING/LOCATION AREA UPDATE REJECTo UE and then directly abandoned for other NAS layers of message that CN is issued.The RAU/LAU processes now failed caused by CN is not responded to equivalent to one due to UE.
In step 230, the reason for RAU refuses can be as shown in table 1 below:
The RAU Reasons For Denial of table 1
Wherein Reason For Denial 15 is relatively adapted to H cells(Cell under HNodeb)With the same PLMN of macrocell (Pulic Land Mobile Network, PLMN)Scene, but be then not suitable for for different PLMN.Reason For Denial 13 can then arrive under same PLMN the frequency for searching for other PLMN, and the scene for different PLMN is relatively adapted to, for same PLMN scene then some waste UE electric power.
The reason for LAU refuses can be as shown in table 2:
System can be just blunt according to different networking situations, selects different Reasons For Denial.
Fig. 3 show the flow chart that unauthorized UE initiates LAU/RAU, and the wherein UE has and accessed access authority of the HNodeb with LAC other HNodeb.The unauthorized UE is in the business of initiation, by relocation to macrocell.
310, UE enter HNodeb, perform LAU/RAU processes.
Although authorities of the UE without access HNodeb, its have with access authority of the HNodeb with LAC other HNodeb, therefore RNC allows its LAU/RAU process.
320, carry out RRC connection procedures;
330, when UE initiates business, R C perform normal access procedure(Including Access Layer and Non-Access stratum procedure);
340, RAB appointments are carried out, during RAB appointments are carried out, now because the UE does not have this HNodeb access authority, therefore RNC judges perform this UE Relocation processes referring to Fig. 4, specifically includes:
S410, CN initiate RAB Assignment Request (RAB assignment requests to R C);S420, RNC return to RAB Assignment Response to CN, and (RAB, which is assigned, to be responded).Unsuccessful RAB configuration modification (the RAB config updates of failure should be indicated in the RAB Assignment Response that now RNC is initiated to CN), and indicate Cause Value (fail values)(triggering is redirected for " Relocation triggered ").
Certain system can also allow after RAB is allocated successfully, then initiate Relocation processes.
350, perform normal relocation processes.
Implementation of the above-described embodiment to the present invention by taking HNodeb access restriction in 3G systems as an example is illustrated, the method of submitting a written statement to a higher authority is also applied in the systems such as WCDMA/TD-CDMA/GSM, RNC is the wireless controller in corresponding system, such as base station controller BSC, HNodeb is alternatively other types of base station from home such as HBts or femetoNodeb etc..
The present invention is combined by RAU/LAU Reject and relocation process, has reached that HNodeb unauthorized users can be denied to other efficient cells, the impregnable purpose of authorized user.
Industrial applicibility
UE accesses cell method for limiting of the present invention, has the following advantages that:1) to UE, CN, HNodeb does not have any influence, can use standard interface;2) UE can be reduced and encounter the probability of the HNodeb that is used with this user with LAC HNodeb;3) run into HNodeb with LAC HNodeb when, UE will not be refused by LAU/RAU, be gone back home so as to avoid the occurrence of, due to LAI (Location Area Identificaton, Location Area Identification)In UE banned list(Forbidden list) in, cause the UE to cannot be introduced into the situation for the HNodeb having permission;Even if 4) be already attached to lack of competence HNodeb UE, also macrocell can be switched to by RNC, therefore do not interfere with the use of the HNodeb users of oneself when the business of initiation.