CN101511093A - Method, device and system for establishing neighbor relation - Google Patents
Method, device and system for establishing neighbor relation Download PDFInfo
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- CN101511093A CN101511093A CNA2008100577390A CN200810057739A CN101511093A CN 101511093 A CN101511093 A CN 101511093A CN A2008100577390 A CNA2008100577390 A CN A2008100577390A CN 200810057739 A CN200810057739 A CN 200810057739A CN 101511093 A CN101511093 A CN 101511093A
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Abstract
The invention discloses a method, a system and a device for establishing neighbour relation which belong to the mobile communication technique field. The method includes steps as follows: when the system new adds an evolution base station (eNB), first finding another subdistrict adjacent a subdistrict and establishing a neighbour relation with the adjacent subdistrict, obtaining adjacent subdistrict list of the subdistrict, placing the adjacent subdistrict information that does not establishing the adjacent relation in the opposite adjacent subdistrict list into a candidate adjacent subdistrict list, and informing a user equipment (UE) to measure each subdistrict in the candidate neighbour subdistrict list, and confirming the real adjacent subdistrict and establishing the neighbour subdistrict relation according with the UE measuring report.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to a kind of method, Apparatus and system of setting up neighboring BS relationship.
Background technology
In Long Term Evolution (LTE, Long Term Evolution) system,, wish that (Evolved NodeB eNB) can set up neighboring BS relationship automatically for the NodeB of evolution along with the introducing of self-configuring/liberalization function.Industry has also proposed to set up Automatic Neighboring Relation (Automatic Neighbour Relation, method ANR) at present.
In communication system shown in Figure 1, a kind of method of setting up with (intra-freq) adjacent area frequently of setting up, its concrete steps as shown in Figure 2:
(User Equipment UE) to the measurement report of the eNB at current Serving cell A place transmission about sub-district B, has wherein comprised the physical layer identifications phy-CID (not being global cell identity Global-CID) of sub-district B for step 200, subscriber equipment.
Not in the table of the adjacent area of current Serving cell A, eNB indication UE obtains the Global-CID of sub-district B according to the definite physical layer identifications (phy-CID) that wherein comprises of measurement report for step 210, eNB.
In said method, before the UE of A sub-district measured, eNB must give UE intended target frequency.Because the eNB of new adding system does not also know peripheral cell, therefore, can't give UE intended target frequency, causes UE to measure on the frequency of A sub-district, so said method can only be used for homogeneous-frequency adjacent-domain.
At the problem that can not be used for the different standard of alien frequencies adjacent area in the ANR method, industry has proposed to set up or delete according to performance statistic the method for neighboring BS relationship at present, and concrete grammar is:
The detected cell list of statistics UE, every pair of switching times that neighboring interval triggers, every pair of switching times that neighboring interval is finished, the number of times of call drop in the every pair of neighboring interval handoff procedure, the number of times or the Radio Link Failure (RLF of Radio Link Failure take place, Radio Link Failure) data such as number of the RRC connection reconstruction that causes, and these statistics are aggregated into NMS/OMC make judgement there, delete for often causing the neighboring BS relationship that switches call drop or long-time switching generation, for lacking the sub-district that neighboring BS relationship causes Radio Link Failure, set up suitable neighboring BS relationship.
This scheme based on performance statistics, be not limited to the different standard of alien frequencies (inter-freq/inter-RAT) adjacent area, can be used for homogeneous-frequency adjacent-domain equally, but the method will be carried out long statistical observation, required data volume is very big, and observing time, and the threshold value of various statistics all is difficult to the value that finds " really " suitable, that need utilize network operation has experience, or by some emulation tools.So in general, this scheme is not suitable as the basic skills that a kind of neighboring BS relationship is set up, and can only be used for the method for the long-term network optimization as a kind of auxiliary.
Summary of the invention
The invention provides a kind of method, Apparatus and system of setting up neighboring BS relationship, need add up and analyze the problem of lot of data in order to the foundation that solves neighboring BS relationship in the prior art.
The embodiment of the invention provides a kind of method of setting up neighboring BS relationship, and this method may further comprise the steps:
The neighboring BS relationship of described new sub-district and adjacent area is set up in the base station under the new sub-district, and obtains the Neighboring Cell List of this adjacent area;
Determine not set up the sub-district of neighboring BS relationship according to described Neighboring Cell List, and this cell information that will determine is saved in the candidate adjacent table of described new sub-district with described new sub-district;
Indicate the user equipment (UE) of described new sub-district to measure sub-district in the candidate adjacent table,, determine adjacent area real in the candidate adjacent table and set up neighboring BS relationship according to the measurement report that UE returns.
A kind of system that sets up neighboring BS relationship that the embodiment of the invention provides comprises:
First base station, the terminal in the sub-district that is used for comprising with self communicates;
Second base station, when being used to join the system under first base station, neighboring BS relationship between the sub-district of foundation and described first base station, obtain the Neighboring Cell List of the sub-district of described first base station, and the cell information of not setting up neighboring BS relationship with the sub-district of self in this Neighboring Cell List is saved in the candidate adjacent tabulation of self, indicating terminal is measured the sub-district in the described candidate adjacent tabulation, according to the measurement report of described terminal, determines adjacent area real in the candidate adjacent table and sets up neighboring BS relationship.
A kind of base station that the embodiment of the invention provides comprises:
First module is used to set up the neighboring BS relationship of new sub-district and adjacent area, and obtains the Neighboring Cell List of this adjacent area;
Second module is used for determining not set up with described new sub-district the sub-district of neighboring BS relationship according to described Neighboring Cell List, and this cell information is saved in the candidate adjacent table of described new sub-district;
Three module is used for indicating the UE of described new sub-district to measure the sub-district of candidate adjacent table, according to the measurement report that UE returns, determines adjacent area real in the candidate adjacent table and sets up neighboring BS relationship.
The embodiment of the invention is obtained Neighboring Cell List by constantly setting up neighboring BS relationship, and then set up the mode of neighboring BS relationship with the adjacent area in the Neighboring Cell List that obtains, realized that alien frequencies or different standard adjacent area set up neighboring BS relationship automatically, and without the statistics and analysis lot of data, shorten the time of setting up neighboring BS relationship, improved efficient.
Description of drawings
Set up the neighboring BS relationship schematic diagram in Fig. 1 prior art;
Realize setting up automatically the schematic flow sheet of neighboring BS relationship in Fig. 2 prior art;
The schematic flow sheet of setting up neighboring BS relationship of Fig. 3 the invention process row;
The structure chart of setting up the neighboring BS relationship system of Fig. 4 embodiment of the invention;
The structure chart of Fig. 5 embodiment of the invention base station;
The adjacent area schematic diagram of Fig. 6 embodiment of the invention.
Embodiment
In the embodiment of the invention, the base station is at first found a sub-district adjacent with this new sub-district and is set up neighboring BS relationship with it under the new sub-district, obtains the Neighboring Cell List of this adjacent area then; The sub-district message of not setting up neighboring BS relationship in the Neighboring Cell List that obtains is put into the candidate adjacent table, and notifying user equipment UE measures the sub-district in the candidate adjacent table, the real adjacent area of new sub-district in the candidate adjacent table is saved in the Neighboring Cell List of self.In the embodiment of the invention, corresponding sub-district, a base station.
Below in conjunction with Figure of description the specific embodiment of the present invention is elaborated.
As shown in Figure 3, the method for the embodiment of the invention specifically may further comprise the steps:
Step 301: find first adjacent area and set up neighboring BS relationship;
Whether wherein join in the network when a new sub-district, exist with sub-district frequently in the inquiry system of base station under the new sub-district, according to the situation that exists of co-frequency cell, step 301 specifically comprises:
When existing with new sub-district in the system, set up neighboring BS relationship automatically by ANR method and one of them co-frequency cell with frequently adjacent area;
If when not having homogeneous-frequency adjacent-domain, the method for then utilizing Radio Link Failure to recover finds first adjacent area.
The method of Radio Link Failure specifically comprises: when the UE of new sub-district neighbor cell left former sub-district and enters new sub-district, owing to do not set up neighboring BS relationship, Radio Link Failure took place in UE, and and then its can insert again in new sub-district.When inserting, UE reports to new sub-district to the cell information at place before it, and first adjacent area is found in base station (eNB) under the new sub-district.
Step 302: described eNB and described exchange adjacent area, the adjacent area table of setting up neighboring BS relationship;
Wherein, the following dual mode that passes through of exchange Neighboring Cell List is realized:
First kind: by X2 interface exchange Neighboring Cell List, when setting up X2 two sub-districts and connecting, independently X2AP message or X2 Setup message are obtained the Neighboring Cell List of described adjacent area to new cell base station by one;
Second kind: pass through O﹠amp; M interface exchange Neighboring Cell List, NMS/O﹠amp is given with newfound adjacent cell notification in new sub-district; M server, O﹠amp then; The M server sends the Neighboring Cell List of this sub-district of preserving in the database to new sub-district.
Step 303: described eNB is with in the Neighboring Cell List that obtains, not setting up the sub-district of neighboring BS relationship as yet all adds in the candidate adjacent table, and each clauses and subclauses in the tabulation of described candidate adjacent all are provided with an effective time, described clauses and subclauses had both been put into the cell information of candidate adjacent table;
Step 304: described eNB indication UE measures the sub-district in the candidate adjacent table, and receives the measurement result that UE beams back.
Described eNB sends to UE with the frequency of sub-district in the candidate adjacent table, and indication UE measures, and UE returns the measurement report about the sub-district Global-CID that measures.
Whether step 305: judging has new adjacent area to occur in the UE measurement report, if then execution in step 306, otherwise, execution in step 307.
Step 306: described eNB sets up neighboring BS relationship with the real adjacent area that measures,
Further comprise: this adjacent area is added in the Neighboring Cell List of oneself, and from the candidate adjacent table, delete this neighboring BS information, return step 302.
Step 307: wait for that UE beams back new cell information.
The clauses and subclauses that exceed effective time in the deletion candidate adjacent table for the cycle also comprise a parallel timer flow process outside above-mentioned cyclic process, its concrete steps comprise:
Whether step 313, detection candidate adjacent table are empty, then do not forward step 312 to for sky, otherwise execution in step 307
As shown in Figure 4, the system that sets up neighboring BS relationship of the embodiment of the invention comprises: first base station 401 and second base station 402.
Further, described second base station 402 also comprises: first module, 411, the second module 412 and three modules 413.
First module 411 is used to set up the neighboring BS relationship of a new sub-district and an adjacent area, and obtains the Neighboring Cell List of this adjacent area;
Three module 413 is used for indicating the user equipment (UE) of described new sub-district to measure the sub-district of candidate adjacent table, according to the measurement report that UE returns, determines adjacent area real in the candidate adjacent table and sets up neighboring BS relationship.
As shown in Figure 5, the embodiment of the invention provides a kind of base station of realizing setting up neighboring BS relationship, comprising: first module 501, second module 502 and the three module 503.
Wherein, first module 501 is used to set up the neighboring BS relationship of a new sub-district and an adjacent area, and obtains the Neighboring Cell List of this adjacent area;
Wherein, also comprise four module in second module 502, described four module is used to each clauses and subclauses in the described candidate adjacent table that is set an effective time, if do not receive the measurement report about these clauses and subclauses in this effective time, then these clauses and subclauses is deleted from the candidate adjacent table.
Three module 503 is used for indicating the user equipment (UE) of described new sub-district to measure the sub-district of candidate adjacent table, according to the measurement report that UE returns, determines adjacent area real in the candidate adjacent table and sets up neighboring BS relationship.
Wherein, described first module 501 can also comprise: first request module and first receiver module.
First request module is used for sending the request of obtaining Neighboring Cell List by X2 interface base station under described adjacent area;
First receiver module is used for receiving by X2 interface the Neighboring Cell List of base station under the described adjacent area.
Described first module 501 can also comprise: second request module and second receiver module.In first module, do not exist under the situation of first request module and first receiver module, can enable second request module and second receiver module.
Wherein, second request module is used for by the newfound neighboring BS information of operation maintenance interface notice operation and maintenance server;
Second receiver module is used for by the Neighboring Cell List of described operation maintenance interface reception from base station under the described adjacent area of described operation and maintenance server.6 concrete adjacent area distribution schematic diagram describes the invention process row in conjunction with the accompanying drawings, has two kinds of situations in the system when a new sub-district joins: the one, and existence and new sub-district are with adjacent area frequently in the system; The 2nd, there is not any homogeneous-frequency adjacent-domain around the new sub-district.
Wherein the N representative newly is deployed to the sub-district in the system, and its Neighboring Cell List is empty.
Sub-district A.C, D, E, F, H be and the sub-district of sub-district N alien frequencies or different standard, comprises B, F sub-district in the Neighboring Cell List of A, comprises adjacent area D, B in the Neighboring Cell List of sub-district C.
(1) sub-district B is the co-frequency cell of N, comprises sub-district A, C in its adjacent area table.
After sub-district N is deployed in the system,, finds sub-district B and set up neighbouring relations by the ANR method.
(2) sub-district B is the different standard of the alien frequencies adjacent area of sub-district N, comprises sub-district A, C in the table of its adjacent area, and in this case, sub-district N then adopts the method for Radio Link Failure, finds first and adjacent sub-district.Suppose that this adjacent sub-district is sub-district B, also any one in the middle of the adjacent area of sub-district N, wherein find the method for sub-district B to be:
If the UE of sub-district B leaves this sub-district and enters into new sub-district N, owing to do not set up neighboring BS relationship, Radio Link Failure takes place in UE, and and then UE can insert again at sub-district N.Give sub-district N the report information of sub-district B when inserting, eNB has found first adjacent area under the N of sub-district, and sets up neighboring BS relationship with it.
After setting up neighboring BS relationship, eNB perhaps passes through O﹠amp by X2 interface under the N of sub-district; The M interface obtains the Neighboring Cell List of sub-district B, eNB is not joining in the candidate adjacent tabulation with the sub-district of oneself setting up neighboring BS relationship both sub-district C and sub-district A as yet in the B Neighboring Cell List of sub-district under the N sub-district, and the clauses and subclauses about sub-district A and C in the candidate adjacent table are provided with an effective time.
Described eNB indicates the UE of its service to measure sub-district C and the sub-district A that preserves in the candidate adjacent table, UE returns the measurement report about sub-district C and sub-district A, eNB learns that according to the UE measurement report sub-district A and sub-district C are and own adjacent sub-district, thereby sub-district A and sub-district C are deleted from the candidate adjacent table, join in the Neighboring Cell List of oneself.
ENB exchanges Neighboring Cell List with sub-district A again, because of there being sub-district B in the Neighboring Cell List of sub-district N, so no longer store the relevant information of sub-district B, only sub-district F is joined in the candidate adjacent table, and indication UE measures sub-district F.Because of sub-district F is not adjacent with sub-district N, so UE measures the information less than sub-district F, timer is deleted the information of sub-district F from the candidate adjacent table after the Measuring Time to sub-district F surpasses the effective time that is provided with.
When UE measured sub-district F, the base station eNB of sub-district N and sub-district C exchanged Neighboring Cell List, thereby obtained adjacent area B and the D of sub-district C.
To find all adjacent areas through above-mentioned cyclic process sub-district N, set up a perfect neighboring BS relationship.
In embodiments of the present invention, the base station can be by X2 interface and O﹠amp; M interface exchange Neighboring Cell List even do not have X2 interface between two eNB, is suitable for too.Because of invention is a kind of method fully automatically, do not need artificial participation, do not need O﹠amp yet; M and pre-configured, and alien frequencies and different standard adjacent area are set up process and are followed the foundation of homogeneous-frequency adjacent-domain to walk abreast, do not need to wait for after the homogeneous-frequency adjacent-domain relation is set up end and set up alien frequencies and different standard neighboring BS relationship again, so the required time of method the inventive method with respect to the dependence performance statistics will lack, and has improved efficient.
Method of the present invention is not limited to the embodiment described in the embodiment, and those skilled in the art's technical scheme according to the present invention draws other execution mode, belongs to technological innovation scope of the present invention equally.Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (11)
1, a kind of method of setting up neighboring BS relationship is characterized in that, this method may further comprise the steps:
The neighboring BS relationship of described new sub-district and adjacent area is set up in the base station under the new sub-district, and obtains the Neighboring Cell List of this adjacent area;
Determine not set up the sub-district of neighboring BS relationship according to described Neighboring Cell List, and described cell information is saved in the candidate adjacent table of described new sub-district with described new sub-district;
Indicate the user equipment (UE) of described new sub-district to measure sub-district in the candidate adjacent table,, determine adjacent area real in the candidate adjacent table and set up neighboring BS relationship according to the measurement report that UE returns.
2, the method for claim 1 is characterized in that, the neighboring BS relationship of a new sub-district of described foundation and an adjacent area comprises:
Find the homogeneous-frequency adjacent-domain of described new sub-district by Automatic Neighboring Relation ANR method, and set up the neighboring BS relationship between described new sub-district and the described homogeneous-frequency adjacent-domain; Perhaps,
The method of recovering by Radio Link Failure finds alien frequencies or different standard adjacent area, and sets up the neighboring BS relationship between described new sub-district and described alien frequencies or the different standard adjacent area.
3, the method for claim 1 is characterized in that, the described Neighboring Cell List that obtains this adjacent area comprises:
Base station and described adjacent area obtain the Neighboring Cell List of this adjacent area under the new sub-district by X2 interface in setting up the X2 connection procedure; Perhaps,
The base station is notified to operation and maintenance server to newfound adjacent area by the operation maintenance interface under the new sub-district, is returned the Neighboring Cell List of this adjacent area then by operation and maintenance server.
4, method as claimed in claim 3 is characterized in that, the described Neighboring Cell List that obtains this adjacent area by X2 interface comprises:
The base station obtains the Neighboring Cell List of described adjacent area by X2AP message independently under the new sub-district; Perhaps,
The base station obtains the Neighboring Cell List of described adjacent area by X2 Setup message under the new sub-district.
As the described method of the arbitrary claim of claim 1 to 4, it is characterized in that 5, each clauses and subclauses in the described candidate adjacent table all are provided with an effective time, this method also further comprises:
If the clauses and subclauses that do not occur in measurement report in this effective time are arranged, then with the deletion from described candidate adjacent tabulation of these clauses and subclauses.
6, a kind of system that sets up neighboring BS relationship is characterized in that, comprising:
First base station, the terminal in the sub-district that is used for comprising with self communicates;
Second base station, when being used to join the system under first base station, neighboring BS relationship between the sub-district of foundation and described first base station, obtain the Neighboring Cell List of the sub-district of described first base station, and the cell information of not setting up neighboring BS relationship with the sub-district of self in this Neighboring Cell List is saved in the candidate adjacent tabulation of self, indicating terminal is measured the sub-district in the described candidate adjacent tabulation, according to the measurement report of described terminal, determines adjacent area real in the candidate adjacent table and sets up neighboring BS relationship.
7, system as claimed in claim 6 is characterized in that, described second base station comprises:
First module is used to set up the neighboring BS relationship of new sub-district and adjacent area, and obtains the Neighboring Cell List of this adjacent area;
Second module is used for determining not set up with described new sub-district the sub-district of neighboring BS relationship according to described Neighboring Cell List, and this cell information is saved in the candidate adjacent table of described new sub-district;
Three module is used for indicating the UE of described new sub-district to measure the sub-district of candidate adjacent table, according to the measurement report that UE returns, determines adjacent area real in the candidate adjacent table and sets up neighboring BS relationship.
8, a kind of base station is characterized in that, comprising:
First module is used to set up the neighboring BS relationship of new sub-district and adjacent area, and obtains the Neighboring Cell List of this adjacent area;
Second module is used for determining not set up with new sub-district the sub-district of neighboring BS relationship according to described Neighboring Cell List, and this cell information is saved in the candidate adjacent table of described new sub-district;
Three module is used for indicating the UE of described new sub-district to measure the sub-district of candidate adjacent table, according to the measurement report that UE returns, determines adjacent area real in the candidate adjacent table and sets up neighboring BS relationship.
9, base station as claimed in claim 8 is characterized in that, described first module comprises:
First request module is used for sending by X2 interface base station under described adjacent area the request of Neighboring Cell List;
First receiver module is used for receiving by X2 interface the Neighboring Cell List of base station under the described adjacent area.
10, base station as claimed in claim 8 is characterized in that, described first module comprises:
Second request module is used for the newfound neighboring BS information of operation maintenance interface notice operation and maintenance server;
Second receiver module is used for by the Neighboring Cell List of described operation maintenance interface reception from base station under the described adjacent area of described operation and maintenance server.
11, base station as claimed in claim 8 is characterized in that, the effective time of each clauses and subclauses correspondence in the described candidate adjacent table, then described second module also comprises:
Four module is used for then these clauses and subclauses being deleted from described candidate adjacent table as if the measurement result of not receiving in effective time about corresponding clauses and subclauses.
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