CN102131176B - Method and device for updating picocell adjacent cell information - Google Patents
Method and device for updating picocell adjacent cell information Download PDFInfo
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- CN102131176B CN102131176B CN201010001268.9A CN201010001268A CN102131176B CN 102131176 B CN102131176 B CN 102131176B CN 201010001268 A CN201010001268 A CN 201010001268A CN 102131176 B CN102131176 B CN 102131176B
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- adjacent area
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
Abstract
The invention relates to a method for updating picocell adjacent cell information, which comprises the following steps: a base station controller acquires preliminary adjacent cell information and acquires logic cells or picocells to be screened; the base station controller compares the logic cells or picocells to be screened with the preliminary adjacent cell information, screens the logic cells or picocells to be screened according to a screening principle of avoiding same frequency interference and adjacent frequency interference and determines logic cells or picocells which can be supplemented; and the base station controller updates the preliminary adjacent cell information according to the logic cells or picocells which are determined to be supplemented. Accordingly, the invention also provides a device for updating picocell adjacent cell information, which comprises a storage module, a cell acquisition module, an adjacent cell information acquisition module, a screening module and an updating module. Through the method and the system, automatic adjacent cell updating can be performed, and the switching success rate is greatly increased.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to picocell adjacent cell information update method and device in a kind of moving communicating field.
Background technology
The birth of femto base station is that very large contribution has been made in networking and development.While having a lot of femto base stations to exist in a region, these femto base stations may have a common grand adjacent area.In the process realizing, can there be an adjacent area table each base station, and because macro base station Area comparison is large, what be adjacent may have a lot of adjacent areas slightly.The parameter configuration of existing grand adjacent area is on backstage by being manually configured, and the number of the Biao Zhong adjacent area, adjacent area of grand adjacent area has certain restriction, and in a large amount of situations about using of femto base station, is slight adjacent area all cannot be configured in grand adjacent area.Therefore, in the grand adjacent area of existing system, these femto base stations all cannot be configured to one by one in the table of adjacent area, thereby the carrying out that can badly influence gravity treatment and switching between macro base station and part femto base station, further, user's perceptibility and service quality also can be subject to certain impact.And core-network side is by the so many femto base stations of artificial setting, it is too large that it administers and maintains workload, need to expend a large amount of manpowers and time.
In view of the problem of above-mentioned existence, at present industry has also proposed some effective solutions, such as the introducing of logic district function just can solve an above-mentioned difficult problem cleverly.Wherein, the picocell under a lane place with identical frequency and same color is called a logic district, and as represented by yellow, each picocell of (the picocell A in Fig. 1) has identical frequency and colour coding, forms logic district 1 jointly; Each picocell that represents (the picocell B in Fig. 1) by blueness forms logic district 2 jointly; Each the formation logic district, picocell 3 that represents (the picocell C in Fig. 1) by redness.There is independently cell ID each logic district, and the picocell of same color all belongs to logic district separately, and the picocell under same logic district is non-conterminous mutually.Although also there are independent and unique cell ID in each picocell under logic district, but in all operation flows, what core-network side was seen is logic district sign few in number, the largest benefit of this design is exactly the maintenance of being convenient to core net, especially the neighbor cell configuration of macro base station becomes simple, when the neighbor cell configuration of macro base station, only an adjacent area need to be arranged to in all picocells of identical frequency and same color, be arranged to the logic district that these have identical frequency and same color, the switching of macrocell and picocell and gravity treatment so just can have easily been realized.
But although the appearance of logic district concept has solved a difficult problem of switching between macrocell and picocell, for the switching problem between picocell without any improvement.Therefore, be badly in need of wanting a kind of method that can increase adjacent area, reach the object that improves picocell handover success rate.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of picocell adjacent cell information update method and device, can improve the handover success rate between picocell.
Due to the dynamic access characteristic of femto base station and being widely used of automatic adjacent section configuring technical, often can because scanning thresholding and sweep limits arrange the problem such as improper occur part slightly adjacent domain scanning less than phenomenon; Sometimes also because exist to disturb or all may cause sweeping less than suitable adjacent area or the disabled situation in adjacent area swept to because of reasons such as femto base station power on simultaneously, therefore just there will be the phenomenon that cannot switch between adjacent femto base station with gravity treatment, thereby had a strong impact on user's speech quality and perceptibility.Although the appearance of logic district concept has solved a difficult problem of switching between macrocell and picocell, for the switching problem between picocell without any improvement.Therefore, be badly in need of wanting a kind of method that can increase adjacent area, reach the object that improves picocell handover success rate.
In order to address the above problem, the invention provides a kind of picocell adjacent cell information update method, comprising:
Base station controller obtains preliminary neighboring BS information, and obtains logic district to be screened or picocell;
Described base station controller compares logic district to be screened or picocell and preliminary neighboring BS information, according to avoiding the screening principle that occurs co-channel interference and adjacent frequency interference to screen logic district to be screened or picocell, definite logic district or picocell that can be supplementary;
Described base station controller upgrades preliminary neighboring BS information according to definite logic district or picocell that can be supplementary.
Further, said method also has following features:
Described base station controller obtains preliminary neighboring BS information, and before obtaining logic district to be screened, also comprises:
Described base station controller completes the neighbor cell configuration of a certain femto base station;
The neighboring BS information that described preliminary neighboring BS information is described femto base station; The all logic district of described logic district to be screened for configuring under this base station controller;
Described method is specially:
Described base station controller obtains the neighboring BS information of described femto base station, and obtains all logic district that configure under this base station controller;
Described base station controller compares the neighboring BS information of described logic district and described femto base station successively, according to avoiding the screening principle that occurs co-channel interference and adjacent frequency interference, described logic district is screened, determine and can carry out supplementary logic district, and add in the neighboring BS information of described femto base station as a slight adjacent area carrying out supplementary logic district after screening.
Further, said method also has following features:
Described described logic district screened and is specially:
When described base station controller compares the neighboring BS information of described logic district and described femto base station:
If described logic district has identical frequency and identical colour coding with the adjacent area of described femto base station, not using this logic district as carrying out supplementary logic district;
Otherwise using this logic district as carrying out supplementary logic district.
Further, said method also has following features:
Described base station controller obtains preliminary neighboring BS information, and before obtaining logic district to be screened, also comprises:
Described base station controller receives the service message that exits that femto base station sends;
Described preliminary neighboring BS information exits the neighboring BS information of slight adjacent area of the femto base station of service described in being; The logic district at the femto base station place of service is exited for this in described logic district to be screened;
Described method is specially:
Described base station controller obtains the neighboring BS information of all slight adjacent areas of this femto base station that exits service, and obtains the logic district that this exits the femto base station place of service;
Described base station controller by the logic district at the described femto base station place of exiting service successively with the neighboring BS information of slight adjacent area with compare, according to avoiding the screening principle that occurs same frequency and adjacent frequency interference, described logic district is screened, when determine this logic district by can add to during the logic district of slight adjacent area of comparison, described base station controller adds to this logic district in the neighboring BS information of compared slight adjacent area.
Further, said method also has following features:
Described described logic district screened and is specially:
Described base station controller by the logic district at the described femto base station place of exiting service successively with the neighboring BS information of slight adjacent area when comparing:
If slightly certain Yu Gai logic district, adjacent area of adjacent area has identical frequency and identical colour coding, determine this logic district by can not add to the logic district in the neighboring BS information of slight adjacent area of comparison;
Otherwise this logic district by can add to the logic district in the neighboring BS information of slight adjacent area of comparison.
Further, said method also has following features:
Described base station controller obtains preliminary neighboring BS information, and before obtaining picocell to be screened, also comprises:
Under described base station controller, there is new femto base station access network;
Described preliminary neighboring BS information is the neighboring BS information of the slight adjacent area of described new femto base station; The picocell of the femto base station that described picocell to be screened is this new access;
Described method is specially:
Described base station controller obtains the neighboring BS information of all slight adjacent areas of the femto base station of described new access, and the picocell that obtains the femto base station of this new access;
Described base station controller compares the picocell of the femto base station of this new access successively with the neighboring BS information of all slight adjacent areas of the femto base station of described new access, according to avoiding occurring the screening principle with frequency and adjacent frequency interference, screen picocell to described new access, when determine this picocell by can add to the picocell in the neighboring BS information of slight adjacent area of comparison, described base station controller adds to this picocell in the neighboring BS information of compared slight adjacent area.
Further, said method also has following features:
Described described logic district screened and is specially:
When described base station controller compares the picocell of newly access successively with described slight adjacent area:
If slightly certain Yu Gai picocell, adjacent area of adjacent area has identical frequency and identical colour coding, determine that this picocell is for adding to the picocell in the neighboring BS information of described slight adjacent area;
Otherwise this picocell is for adding to the picocell in the neighboring BS information of described slight adjacent area.
In order to address the above problem, the present invention also provides a kind of picocell adjacent cell information updating device, and for base station controller, described device comprises memory module, community acquisition module, neighboring BS information acquisition module, screening module and update module;
Described memory module, the logic district, picocell and the neighboring BS information that for storing this base station controller, configure;
Described community acquisition module, for obtaining logic district to be screened or picocell from described memory module;
Described neighboring BS information acquisition module, for obtaining preliminary neighboring BS information from described memory module;
Described screening module, the preliminary neighboring BS information obtaining for logic district described to be screened that described community acquisition module is obtained or picocell and described adjacent area acquisition module compares, according to the screening principle of avoiding occurring that co-channel interference and adjacent frequency are disturbed, logic district to be screened or picocell are screened, obtain definite logic district or picocell that can be supplementary;
Described update module, for upgrading preliminary neighboring BS information according to described definite logic district or picocell that can be supplementary.
Further, said apparatus also has following features:
Described device also comprises adjacent domain scanning module and neighbor cell configuration module;
The all logic district of described logic district to be screened for configuring under this base station controller, the neighboring BS information that described preliminary neighboring BS information is femto base station;
Described adjacent domain scanning module, for scanning the adjacent area of femto base station; Described neighbor cell configuration module, completes the neighbor cell configuration of femto base station, and the neighboring BS information of femto base station is sent to memory module for the adjacent area obtaining according to described adjacent domain scanning module; The neighboring BS information of the femto base station that all logic district that described screening module is obtained according to described community acquisition module and described neighboring BS information acquisition module obtain, successively the neighboring BS information of described logic district and described femto base station is compared, if the adjacent area of described femto base station has identical frequency and identical colour coding with described logic district, not using this logic district as carrying out supplementary logic district; Otherwise using this logic district as carrying out supplementary logic district;
Described update module, according to the selection result of described screening module, adds to described definite logic district that can be supplementary in the neighboring BS information of femto base station as slight adjacent area successively.
Further, said apparatus also has following features:
Described device also comprises and exits service message receiver module;
The logic district at the femto base station place of service is exited for this in described logic district to be screened; Described preliminary neighboring BS information exits the neighboring BS information of slight adjacent area of the femto base station of service described in being;
The described service message receiver module that exits, for receiving the service message that exits that femto base station sends;
The logic district at this femto base station place that described screening module is obtained according to described community acquisition module and described neighboring BS information acquisition module obtain this exit the neighboring BS information of slight adjacent area of the femto base station of service, by the logic district at the described femto base station place of exiting service successively with the neighboring BS information of slight adjacent area with compare, if certain Yu Gai logic district, adjacent area of the slight adjacent area of being compared has identical frequency and identical colour coding, determine this logic district by can not add to the logic district in the neighboring BS information of slight adjacent area of comparison, otherwise this logic district can add to the logic district in the neighboring BS information of compared slight adjacent area,
Described update module, according to the selection result of described screening module, adds to described definite logic district that can be supplementary in the neighboring BS information of compared slight adjacent area as slight adjacent area successively.
Further, said apparatus also has following features:
Described device also comprises base station access detection module and adjacent domain scanning module;
Described picocell to be screened is the picocell of the femto base station of new access; Described preliminary neighboring BS information is the neighboring BS information of the slight adjacent area of new femto base station;
Described base station access detection module, for detection of the femto base station of new access network;
Described adjacent domain scanning module, for scanning the adjacent area of the femto base station of this new access, and sends to described memory module by the neighboring BS information of the slight adjacent area of this new femto base station;
The neighboring BS information of the slight adjacent area of the femto base station of the new access that the picocell of the femto base station of this new access that described screening module is obtained according to described community acquisition module and described neighboring BS information acquisition module obtain, the picocell of newly access is compared with described slight adjacent area successively, according to avoiding occurring the screening principle with frequency and adjacent frequency interference, screen picocell to described new access, if certain adjacent area of the slight adjacent area of being compared has identical frequency and identical colour coding with the picocell of this new access, the picocell of determining described new access by can not add to the picocell in the neighboring BS information of slight adjacent area of comparison, otherwise described picocell by can add to the picocell in the neighboring BS information of slight adjacent area of comparison,
Described update module, according to the selection result of described screening module, adds to described definite picocell that can be supplementary in the neighboring BS information of compared slight adjacent area as slight adjacent area successively.
Said method and system can be carried out automatic adjacent section renewal, and have greatly improved handover success rate.In another embodiment, the method for oppositely supplementing adjacent area has solved the problem that slight neighboring interval switches, thereby has reduced the probability of mobile terminal call drop.In addition, said method and system can be completed automatically by BSC, and without artificial participation, so accuracy rate is high, and labor management and maintenance workload are little.And, can not have influence on because of the exiting service of base station the switching between other stations.The present invention is applicable to mobile communication system, especially in GSM (Global System for Mobile communications, global system for mobile communications).
Accompanying drawing explanation
Fig. 1 is logic district conceptual schematic view in prior art;
Fig. 2 is that in the embodiment of the present invention, flow chart is upgraded in adjacent area, logic district;
Fig. 3 is the flow chart that when femto base station exits service in the embodiment of the present invention, adjacent area is upgraded;
Fig. 4 oppositely upgrades adjacent area flow chart in the embodiment of the present invention;
Fig. 5 realizes the device that adjacent area is upgraded in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific implementation method, technical scheme of the present invention is described in detail, to further understand the present invention's object, scheme and effect, but not as the restriction to claims protection range of the present invention.
In order to make up the deficiency in prior art application, guarantee two adjacent but be not set to mutually can switch between the femto base station of slight adjacent area, the present embodiment has proposed a kind of method that adjacent area is upgraded under the background of logic district application, in order to solve two the adjacent problems that but cannot switch of femto base station.Wherein, it is according to avoiding the screening principle that occurs co-channel interference and adjacent frequency interference to screen logic district to be screened or picocell that adjacent area is upgraded, then logic district or picocell after screening are updated to as slight adjacent area in the neighboring BS information on BSC (Basic Station Controller, base station controller).By the supplementary method of this renewal, can greatly improve the success rate that femto base station switches, reduced cutting off rate.And the adjacent area update method in the embodiment of the present invention can be completed automatically by system, without artificial participation, avoided the problem that may go wrong is manually set, so accuracy rate to be high, the while can realize labor management and maintenance workload is little.
In the present invention, in the neighboring BS information on BSC, comprise the slight adjacent area that base station scans arrives, also comprise adjacent area, logic district.Because base station may be scanned less than the slight adjacent area being adjacent sometimes, therefore in order to guarantee, better switch and gravity treatment, in neighboring BS information in the present invention on BSC, increased adjacent area, logic district, because there has been adjacent area, logic district, add in neighboring BS information by the form of logic district the slight adjacent area that just base station can not swept to.If mobile terminal will be switched to from current picocell the slight adjacent area just not scanning, if do not have adjacent area, logic district to switch, cannot complete switching.And just because of there has been adjacent area, logic district, mobile terminal can be switched to the slight adjacent area that base station that adjacent area, logic district comprises do not scan from current area, thereby just can switch, because this adjacent area, logic district just comprises the slight adjacent area that this does not scan.
Wherein, in order to realize mobile terminal switching to adjacent area, logic district from picocell, be provided with a switching channels in each picocell, after this switching channels activates, just always in state of activation, switching channels does not carry out voice-and-data business.While switching between execution mobile terminal is from picocell to logic district, because there is the community of a plurality of identical frequencies and same color under logic district, which concrete picocell mobile terminal does not just know to be switched in, so just require mobile terminal to be first cut on switching channels, after standby communication terminal access, just know which real target picocell is, at this moment allow again mobile terminal in this picocell, carry out switching within cell one time, mobile terminal is switched in an idle Traffic Channel of this target picocell, switching channels in former picocell is available while cutting this adjacent area, logic district for other mobile terminal.Therefore,, by switching channels is set, can realize picocell to the switching between adjacent area, logic district.
Preferably, neighboring BS information can be recorded in an adjacent area table.
Correspondingly, the present invention also provides a kind of device of realizing said method, as shown in Figure 5, for base station controller, comprises community acquisition module, neighboring BS information acquisition module, screening module and update module;
Memory module, the logic district and the neighboring BS information that for storing this base station controller, configure;
Community acquisition module, for obtaining logic district to be screened or picocell;
Neighboring BS information acquisition module, for obtaining preliminary neighboring BS information;
Screening module, the preliminary neighboring BS information obtaining for logic district to be screened that community acquisition module is obtained or picocell and adjacent area acquisition module compares, according to avoiding the screening principle that occurs co-channel interference and adjacent frequency interference to screen logic district to be screened or picocell, obtain definite logic district or picocell that can be supplementary;
Update module, for upgrading preliminary neighboring BS information according to described definite logic district or picocell that can be supplementary.
The trigger condition of carrying out adjacent area renewal in the present invention comprises:
1, BSC completes after the neighbor cell configuration of a certain femto base station;
2, femto base station is moved or network insertion fault needs femto base station to exit service;
3, new femto base station access network.
In addition can also be other trigger condition, as BSC periodically carries out adjacent area renewal etc..
Embodiment mono-:
The main thought of the adjacent area update method of the present embodiment is: BSC (Basic Station Controller, base station controller) complete after the slight neighbor cell configuration of femto base station, the all logic district that configure under this BSC of automatic acquisition, and logic district is screened to prevent with frequency and adjacent frequency and disturb, then the logic district after screening is write in the neighboring BS information of the slight adjacent area under this BSC as a slight adjacent area.Owing to having increased this type of adjacent area, logic district in neighboring BS information, while switching between femto base station, according to the neighboring BS information after upgrading, switch, can well improve the success rate of switching.
In the present embodiment, BSC carries out the slight neighbor cell configuration of femto base station can pass through base station scans adjacent area, and the mode that is the slight adjacent area of the automatic configuration of femto base station by BSC realizes.
The method that the passing through of the present embodiment increases adjacent area, logic district in neighboring BS information specifically can comprise the following steps:
Step 1-1:BSC obtains all logic district that configure under this BSC;
Wherein, logic district is on OMCR (Operation & Maintenance Center forRadio wireless operation maintenance center), to carry out manual configuration in advance, and then these configuration synchronization in the database of BSC; Therefore, BSC can directly obtain all logic district that configure under this BSC from its database.
Step 1-2:BSC screens to prevent with frequency and adjacent frequency to logic district and disturbs;
Step 1-3:BSC adds the logic district after screening in neighboring BS information to as a slight adjacent area.
The realization flow figure that Figure 2 shows that adjacent area, the logic district update method proposing in the present embodiment, specifically comprises the steps:
Step 210:BSC completes the slight neighbor cell configuration of a certain femto base station;
Step 220:BSC obtains all logic district information under this BSC;
Step 230: get a logic district;
Wherein, owing to logic district being screened, need to travel through all logic district herein, therefore, in this step, get one of them and do not carry out garbled logic district and screen; As being first logic district;
Step 240: according to avoiding the screening principle that occurs co-channel interference and adjacent frequency interference to screen this logic district, judge whether to supplement this logic district; If so, execution step 250, otherwise execution step 260;
Preferably, in the present embodiment, avoid occurring that screening principle that co-channel interference and adjacent frequency are disturbed is that the adjacent area that logic district and femto base station have been scanned compares, if certain logic district has identical frequency and identical colour coding with the adjacent area scanning, this logic district is not added in neighboring BS information as slight adjacent area, otherwise this logic district is added in the neighboring BS information of femto base station as slight adjacent area.Wherein, the adjacent area that femto base station has scanned comprises grand adjacent area and slight adjacent area;
Step 250: add in the neighboring BS information of this picocell using this logic district as a slight adjacent area;
Step 260: judge whether that under this BSC, all logic district have all completed screening, if execution step 280, otherwise execution step 270;
Step 270: obtain next logic district, return to step 240;
Step 280: finish.
Correspondingly, the present embodiment also provides a kind of device of realizing said method, for base station controller, comprises community acquisition module, neighboring BS information acquisition module, screening module and update module;
Memory module, the logic district and the neighboring BS information that for storing this base station controller, configure;
Community acquisition module, for obtaining logic district to be screened or picocell;
Neighboring BS information acquisition module, for obtaining preliminary neighboring BS information;
Screening module, the preliminary neighboring BS information obtaining for logic district to be screened that community acquisition module is obtained or picocell and adjacent area acquisition module compares, according to avoiding the screening principle that occurs co-channel interference and adjacent frequency interference to screen logic district to be screened or picocell, obtain definite logic district or picocell that can be supplementary;
Update module, for upgrading preliminary neighboring BS information according to described definite logic district or picocell that can be supplementary.
Further, this device also comprises adjacent domain scanning module and neighbor cell configuration module;
All logic district for configuring under this base station controller, logic district to be screened, the neighboring BS information that preliminary neighboring BS information is femto base station;
Adjacent domain scanning module, for scanning the adjacent area of femto base station;
Neighbor cell configuration module, completes the neighbor cell configuration of femto base station, and the neighboring BS information of femto base station is sent to memory module for the adjacent area obtaining according to adjacent domain scanning module;
Screening module, the neighboring BS information of the femto base station that all logic district that obtain according to described community acquisition module and described neighboring BS information acquisition module obtain, successively logic district and the adjacent area having scanned are compared, if the adjacent area having scanned has identical frequency and identical colour coding with logic district, not using this logic district as carrying out supplementary logic district; Otherwise using this logic district as carrying out supplementary logic district;
Update module, adds to definite logic district that can be supplementary in the neighboring BS information of femto base station as slight adjacent area successively according to the selection result of screening module.
Embodiment bis-:
Due to femto base station One's name is legion and use more flexible; therefore often can there is the phenomenon that femto base station is moved; sometimes also because network insertion fault need to exit service by this femto base station; therefore in order to prevent, because of a femto base station, to exit service and have influence on normally carrying out that under this logic district, femto base station place, switch other picocell, in the embodiment of the present invention two, adopting the supplementary method in adjacent area can well avoid the appearance of this problem.
Fig. 3 is that in the embodiment of the present invention two, adjacent area is updated in femto base station and exits the application in service, when femto base station exits service, also needs to carry out adjacent area and supplements, and specifically comprises that step is as follows:
Step 310:BSC receives the service message that exits that femto base station sends;
Step 320:BSC obtains all slight adjacent area of this femto base station that exits service, and obtains the neighboring BS information of slight adjacent area;
Step 330:BSC obtains the neighboring BS information of one of them slight adjacent area of this femto base station;
Step 340:BSC according to avoid occurring with frequently and the screening principle of adjacent frequency interference judge whether this to be moved back the logic district that takes femto base station place and add in the neighboring BS information of this slight adjacent area obtaining, as needs perform step 350, otherwise execution step 360;
Preferably, in the present embodiment, avoid occurring that the screening principle that co-channel interference and adjacent frequency are disturbed is that the logic district that this is exited to the place, picocell of service compares with all neighboring BS information of the slight adjacent area judging, if this logic district has identical frequency and identical colour coding with certain adjacent area of slight adjacent area, this logic district is not added in the neighboring BS information of the slight adjacent area judging as slight adjacent area, otherwise this logic district is added in the neighboring BS information of femto base station as slight adjacent area.
Step 350:BSC adds this adjacent area, logic district in the neighboring BS information of slight adjacent area to as slight adjacent area;
Step 360:BSC judges whether all slight adjacent area of the femto base station that this exits service is all disposed, if execution step 380, otherwise execution step 370;
Step 370: obtain the slight adjacent area of the next one of this femto base station that exits service, return to step 340;
Step 380: finish.
Correspondingly, the present embodiment also provides a kind of device of realizing said method, for base station controller, comprises community acquisition module, neighboring BS information acquisition module, screening module and update module;
Memory module, the logic district and the neighboring BS information that for storing this base station controller, configure;
Community acquisition module, for obtaining logic district to be screened or picocell;
Neighboring BS information acquisition module, for obtaining preliminary neighboring BS information;
Screening module, the preliminary neighboring BS information obtaining for logic district to be screened that community acquisition module is obtained or picocell and adjacent area acquisition module compares, according to avoiding the screening principle that occurs co-channel interference and adjacent frequency interference to screen logic district to be screened or picocell, obtain definite logic district or picocell that can be supplementary;
Update module, for adding to preliminary neighboring BS information using described definite logic district or picocell that can be supplementary as slight adjacent area.
Further, this device also comprises and exits service message receiver module;
The logic district at the femto base station place of service is exited for this in logic district to be screened; Preliminary neighboring BS information is the neighboring BS information of slight adjacent area that exits the femto base station of service;
Exit service message receiver module, for receiving the service message that exits that femto base station sends;
The logic district at this femto base station place of obtaining according to described community acquisition module of screening module and described neighboring BS information acquisition module obtains that this exits the neighboring BS information of slight adjacent area of the femto base station of service, successively the logic district of exiting the femto base station place of service is compared with the neighboring BS information of slight adjacent area, if this logic district has identical frequency and identical colour coding with certain adjacent area of compared slight adjacent area, determine this logic district by can not add to the logic district in the neighboring BS information of slight adjacent area of comparison; Otherwise this logic district can add to the logic district in the neighboring BS information of compared slight adjacent area;
Described update module, for adding to preliminary neighboring BS information using described definite logic district or picocell that can be supplementary as slight adjacent area.
Embodiment tri-:
Complexity due to wireless environment, likely adjacent two femto base station A and B there will be the problem that slight adjacent area can only unidirectionally be detected, as: in the frequency scanning stage, femto base station A can detect the existence of adjacent picocell B, but femto base station B but can't detect the existence of picocell A; Or in the situation that femto base station A and femto base station B power on simultaneously, also likely there is the above-mentioned situation that slight adjacent area can only unidirectionally be detected.In order to improve the searching accuracy of adjacent area, the embodiment of the present invention three has proposed a kind of method of oppositely supplementing adjacent area, after the adjacent area of picocell table generates, using this picocell as a slight adjacent area, be oppositely filled up in the adjacent area table of slight adjacent area of this picocell, thereby can improve handover success rate.The method of this reverse renewal adjacent area as shown in Figure 4, specifically comprises the steps:
Under step 410:BSC, there is new femto base station access network;
Step 420:BSC obtains all slight adjacent area of the femto base station of new access;
Step 430:BSC obtains the neighboring BS information of one of them slight adjacent area;
Step 440: according to avoid occurring with frequently and the screening principle disturbed of adjacent frequency judge the information that whether has this picocell in the neighboring BS information of this slight adjacent area, if without performing step 450, otherwise perform step 460;
Preferably, in the present embodiment, avoid occurring that the screening principle that co-channel interference and adjacent frequency are disturbed is that the picocell of this new access and the neighboring BS information of the slight adjacent area judging are compared, if this picocell has identical frequency and identical colour coding with certain adjacent area of slight adjacent area, this picocell is not added in the neighboring BS information of the slight adjacent area judging as slight adjacent area, otherwise this picocell is added in the neighboring BS information of femto base station as slight adjacent area.
Step 450: this picocell is added in the neighboring BS information of this slight adjacent area;
Step 460: whether all slight adjacent area that judges this picocell is all disposed, if not being performs step 470, otherwise execution step 480;
Step 470: get the next neighboring BS information of adjacent area slightly in this picocell, execution step 440;
Step 480: finish.
Correspondingly, the present embodiment also provides a kind of device of realizing said method, for base station controller, comprises community acquisition module, neighboring BS information acquisition module, screening module and update module;
Memory module, the logic district and the neighboring BS information that for storing this base station controller, configure;
Community acquisition module, for obtaining logic district to be screened or picocell;
Neighboring BS information acquisition module, for obtaining preliminary neighboring BS information;
Screening module, the preliminary neighboring BS information obtaining for logic district to be screened that community acquisition module is obtained or picocell and adjacent area acquisition module compares, according to avoiding the screening principle that occurs co-channel interference and adjacent frequency interference to screen logic district to be screened or picocell, obtain definite logic district or picocell that can be supplementary;
Update module, for adding to preliminary neighboring BS information using described definite logic district or picocell that can be supplementary as slight adjacent area.
Further, this device also comprises base station access detection module and adjacent domain scanning module;
Described base station access detection module, for detection of the femto base station of new access network;
Described adjacent domain scanning module, for scanning the adjacent area of the femto base station of this new access, and sends to described memory module by the neighboring BS information of the slight adjacent area of this new femto base station;
The neighboring BS information of the slight adjacent area of the femto base station of the new access that the picocell of the femto base station of this new access that described screening module is obtained according to described community acquisition module and described neighboring BS information acquisition module obtain, the picocell of newly access is compared with described slight adjacent area successively, according to avoiding occurring the screening principle with frequency and adjacent frequency interference, screen picocell to described new access, if certain adjacent area of the slight adjacent area of being compared has identical frequency and identical colour coding with the picocell of this new access, the picocell of determining described new access by can not add to the picocell in the neighboring BS information of slight adjacent area of comparison, otherwise described picocell by can add to the picocell in the neighboring BS information of slight adjacent area of comparison,
Described update module, according to the selection result of described screening module, adds to described definite picocell that can be supplementary in the neighboring BS information of compared slight adjacent area as slight adjacent area successively.
The embodiment of the present invention is by a kind of method of adding a kind of logic district adjacent area type or being updated to adjacent area, a kind of logic district type when the femto base station parameter configuration and when femto base station exits service, and oppositely upgrade the method for adjacent area after the new access of femto base station, improved handover success rate; And the realization of the method proposing in the present invention all completes automatically by BSC, without artificial participation; The method has solved because human configuration error causes switching unsuccessful problem simultaneously, thereby can improve speech quality.
Above-mentioned embodiment and application example are not the further restrictions to the art of this patent scheme; any those of ordinary skill in the art should be clear; being equal to that the art of this patent feature is done replaced or corresponding improvement, still within the protection range of this patent.
Claims (8)
1. a picocell adjacent cell information update method, comprising:
Base station controller obtains preliminary neighboring BS information, and obtains logic district to be screened or picocell;
Described base station controller compares logic district to be screened or picocell and preliminary neighboring BS information, according to avoiding the screening principle that occurs co-channel interference and adjacent frequency interference to screen logic district to be screened or picocell, definite logic district or picocell that can be supplementary;
Described base station controller upgrades preliminary neighboring BS information according to definite logic district or picocell that can be supplementary,
Wherein, described in, avoid occurring that the screening principle that co-channel interference and adjacent frequency are disturbed is:
When described base station controller compares with the neighboring BS information of femto base station described logic district: if the adjacent area of described logic district and described femto base station has identical frequency and identical colour coding, not using this logic district as carrying out supplementary logic district, otherwise using this logic district as carrying out supplementary logic district;
Described base station controller by exit service femto base station place logic district successively with the neighboring BS information of slight adjacent area when comparing: if certain Yu Gai logic district, adjacent area of adjacent area has identical frequency and identical colour coding slightly, determine this logic district by can not add to the logic district in the neighboring BS information of slight adjacent area of comparison, otherwise this logic district by can add to the logic district in the neighboring BS information of slight adjacent area of comparison;
When described base station controller compares the picocell of newly access successively with described slight adjacent area: if certain Yu Gai picocell, adjacent area of adjacent area has identical frequency and identical colour coding slightly, determine that this picocell is for adding to the picocell in the neighboring BS information of described slight adjacent area, otherwise this picocell is for adding to the picocell in the neighboring BS information of described slight adjacent area.
2. the method for claim 1, is characterized in that, described base station controller obtains preliminary neighboring BS information, and before obtaining logic district to be screened, also comprises:
Described base station controller completes the neighbor cell configuration of a certain femto base station;
The neighboring BS information that described preliminary neighboring BS information is described femto base station; The all logic district of described logic district to be screened for configuring under this base station controller;
Described method is specially:
Described base station controller obtains the neighboring BS information of described femto base station, and obtains all logic district that configure under this base station controller;
Described base station controller compares the neighboring BS information of described logic district and described femto base station successively, according to avoiding the screening principle that occurs co-channel interference and adjacent frequency interference, described logic district is screened, determine and can carry out supplementary logic district, and add in the neighboring BS information of described femto base station as a slight adjacent area carrying out supplementary logic district after screening.
3. the method for claim 1, is characterized in that, described base station controller obtains preliminary neighboring BS information, and before obtaining logic district to be screened, also comprises:
Described base station controller receives the service message that exits that femto base station sends;
Described preliminary neighboring BS information exits the neighboring BS information of slight adjacent area of the femto base station of service described in being; The logic district at the femto base station place of service is exited for this in described logic district to be screened;
Described method is specially:
Described base station controller obtains the neighboring BS information of all slight adjacent areas of this femto base station that exits service, and obtains the logic district that this exits the femto base station place of service;
Described base station controller by the logic district at the described femto base station place of exiting service successively with the neighboring BS information of slight adjacent area with compare, according to avoiding the screening principle that occurs same frequency and adjacent frequency interference, described logic district is screened, when determine this logic district by can add to during the logic district of slight adjacent area of comparison, described base station controller adds to this logic district in the neighboring BS information of compared slight adjacent area.
4. the method for claim 1, is characterized in that, described base station controller obtains preliminary neighboring BS information, and before obtaining picocell to be screened, also comprises:
Under described base station controller, there is new femto base station access network;
Described preliminary neighboring BS information is the neighboring BS information of the slight adjacent area of described new femto base station; The picocell of the femto base station that described picocell to be screened is this new access;
Described method is specially:
Described base station controller obtains the neighboring BS information of all slight adjacent areas of the femto base station of described new access, and the picocell that obtains the femto base station of this new access;
Described base station controller compares the picocell of the femto base station of this new access successively with the neighboring BS information of all slight adjacent areas of the femto base station of described new access, according to avoiding occurring the screening principle with frequency and adjacent frequency interference, screen picocell to described new access, when determine this picocell by can add to the picocell in the neighboring BS information of slight adjacent area of comparison, described base station controller adds to this picocell in the neighboring BS information of compared slight adjacent area.
5. a picocell adjacent cell information updating device, for base station controller, is characterized in that, described device comprises memory module, community acquisition module, neighboring BS information acquisition module, screening module and update module;
Described memory module, the logic district, picocell and the neighboring BS information that for storing this base station controller, configure;
Described community acquisition module, for obtaining logic district to be screened or picocell from described memory module;
Described neighboring BS information acquisition module, for obtaining preliminary neighboring BS information from described memory module;
Described screening module, the preliminary neighboring BS information obtaining for logic district described to be screened that described community acquisition module is obtained or picocell and described adjacent area acquisition module compares, according to the screening principle of avoiding occurring that co-channel interference and adjacent frequency are disturbed, logic district to be screened or picocell are screened, obtain definite logic district or picocell that can be supplementary;
Described update module, for upgrading preliminary neighboring BS information according to described definite logic district or picocell that can be supplementary,
Wherein, described in, avoid occurring that the screening principle that co-channel interference and adjacent frequency are disturbed is:
When described logic district is compared with the neighboring BS information of femto base station: if the adjacent area of described logic district and described femto base station has identical frequency and identical colour coding, not using this logic district as carrying out supplementary logic district, otherwise using this logic district as carrying out supplementary logic district;
By exit service femto base station place logic district successively with the neighboring BS information of slight adjacent area when comparing: if certain Yu Gai logic district, adjacent area of adjacent area has identical frequency and identical colour coding slightly, determine this logic district by can not add to the logic district in the neighboring BS information of slight adjacent area of comparison, otherwise this logic district by can add to the logic district in the neighboring BS information of slight adjacent area of comparison;
When the picocell of newly access is compared with described slight adjacent area successively: if certain Yu Gai picocell, adjacent area of adjacent area has identical frequency and identical colour coding slightly, determine that this picocell is for adding to the picocell in the neighboring BS information of described slight adjacent area, otherwise this picocell is for adding to the picocell in the neighboring BS information of described slight adjacent area.
6. device as claimed in claim 5, is characterized in that, described device also comprises adjacent domain scanning module and neighbor cell configuration module;
The all logic district of described logic district to be screened for configuring under this base station controller, the neighboring BS information that described preliminary neighboring BS information is femto base station;
Described adjacent domain scanning module, for scanning the adjacent area of femto base station; Described neighbor cell configuration module, completes the neighbor cell configuration of femto base station, and the neighboring BS information of femto base station is sent to memory module for the adjacent area obtaining according to described adjacent domain scanning module; The neighboring BS information of the femto base station that all logic district that described screening module is obtained according to described community acquisition module and described neighboring BS information acquisition module obtain, successively the neighboring BS information of described logic district and described femto base station is compared, if the adjacent area of described femto base station has identical frequency and identical colour coding with described logic district, not using this logic district as carrying out supplementary logic district; Otherwise using this logic district as carrying out supplementary logic district;
Described update module, according to the selection result of described screening module, adds to described definite logic district that can be supplementary in the neighboring BS information of femto base station as slight adjacent area successively.
7. device as claimed in claim 5, is characterized in that, described device also comprises and exits service message receiver module;
The logic district at the femto base station place of service is exited for this in described logic district to be screened; Described preliminary neighboring BS information exits the neighboring BS information of slight adjacent area of the femto base station of service described in being;
The described service message receiver module that exits, for receiving the service message that exits that femto base station sends;
The logic district at this femto base station place that described screening module is obtained according to described community acquisition module and described neighboring BS information acquisition module obtain this exit the neighboring BS information of slight adjacent area of the femto base station of service, by the logic district at the described femto base station place of exiting service successively with the neighboring BS information of slight adjacent area with compare, if certain Yu Gai logic district, adjacent area of the slight adjacent area of being compared has identical frequency and identical colour coding, determine this logic district by can not add to the logic district in the neighboring BS information of slight adjacent area of comparison, otherwise this logic district can add to the logic district in the neighboring BS information of compared slight adjacent area,
Described update module, according to the selection result of described screening module, adds to described definite logic district that can be supplementary in the neighboring BS information of compared slight adjacent area as slight adjacent area successively.
8. device as claimed in claim 5, is characterized in that, described device also comprises base station access detection module and adjacent domain scanning module;
Described picocell to be screened is the picocell of the femto base station of new access; Described preliminary neighboring BS information is the neighboring BS information of the slight adjacent area of new femto base station;
Described base station access detection module, for detection of the femto base station of new access network;
Described adjacent domain scanning module, for scanning the adjacent area of the femto base station of this new access, and sends to described memory module by the neighboring BS information of the slight adjacent area of this new femto base station;
The neighboring BS information of the slight adjacent area of the femto base station of the new access that the picocell of the femto base station of this new access that described screening module is obtained according to described community acquisition module and described neighboring BS information acquisition module obtain, the picocell of newly access is compared with described slight adjacent area successively, according to avoiding occurring the screening principle with frequency and adjacent frequency interference, screen picocell to described new access, if certain adjacent area of the slight adjacent area of being compared has identical frequency and identical colour coding with the picocell of this new access, the picocell of determining described new access by can not add to the picocell in the neighboring BS information of slight adjacent area of comparison, otherwise described picocell by can add to the picocell in the neighboring BS information of slight adjacent area of comparison,
Described update module, according to the selection result of described screening module, adds to described definite picocell that can be supplementary in the neighboring BS information of compared slight adjacent area as slight adjacent area successively.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010001268.9A CN102131176B (en) | 2010-01-19 | 2010-01-19 | Method and device for updating picocell adjacent cell information |
| PCT/CN2010/077325 WO2011088690A1 (en) | 2010-01-19 | 2010-09-26 | Method and apparatus for updating adjacent cell information of picocells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010001268.9A CN102131176B (en) | 2010-01-19 | 2010-01-19 | Method and device for updating picocell adjacent cell information |
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| Publication Number | Publication Date |
|---|---|
| CN102131176A CN102131176A (en) | 2011-07-20 |
| CN102131176B true CN102131176B (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010001268.9A Expired - Fee Related CN102131176B (en) | 2010-01-19 | 2010-01-19 | Method and device for updating picocell adjacent cell information |
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| CN (1) | CN102131176B (en) |
| WO (1) | WO2011088690A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5640676A (en) * | 1995-05-11 | 1997-06-17 | Motorola, Inc. | Method for generating a handoff candidate list |
| US6289220B1 (en) * | 2000-06-22 | 2001-09-11 | Motorola, Inc. | Multiple controller identities for neighbor lists |
| CN1434595A (en) * | 2002-01-24 | 2003-08-06 | 华为技术有限公司 | Method for automatic maintenance neighborlist in CDMA system |
-
2010
- 2010-01-19 CN CN201010001268.9A patent/CN102131176B/en not_active Expired - Fee Related
- 2010-09-26 WO PCT/CN2010/077325 patent/WO2011088690A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5640676A (en) * | 1995-05-11 | 1997-06-17 | Motorola, Inc. | Method for generating a handoff candidate list |
| US6289220B1 (en) * | 2000-06-22 | 2001-09-11 | Motorola, Inc. | Multiple controller identities for neighbor lists |
| CN1434595A (en) * | 2002-01-24 | 2003-08-06 | 华为技术有限公司 | Method for automatic maintenance neighborlist in CDMA system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102131176A (en) | 2011-07-20 |
| WO2011088690A1 (en) | 2011-07-28 |
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