CN106792902A - The processing method of adjacent area PCI conflicts in a kind of LTE wireless communication networks - Google Patents
The processing method of adjacent area PCI conflicts in a kind of LTE wireless communication networks Download PDFInfo
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- CN106792902A CN106792902A CN201611085635.1A CN201611085635A CN106792902A CN 106792902 A CN106792902 A CN 106792902A CN 201611085635 A CN201611085635 A CN 201611085635A CN 106792902 A CN106792902 A CN 106792902A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
- H04W74/0841—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure with collision treatment
- H04W74/0858—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure with collision treatment collision detection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
- H04W74/0841—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure with collision treatment
- H04W74/085—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure with collision treatment collision avoidance
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- Computer Networks & Wireless Communication (AREA)
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- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of processing method of PCI conflicts in adjacent area in LTE wireless communication networks, including：Step 1, selectes the region for needing optimization；Step 2, makes the area cell carry out automatic adjacent area interworking；Step 3, extracts the whole network homogeneous-frequency adjacent-domain relation table, and data screening is carried out to the table, only leaves same Serving cell and adjacent area PCI identical neighboring BS relationship, and the relation table after screening is referred to as the neighborhood region correlation chart that conflicts；Step 4, is row label with the adjacent area PCI in the neighborhood region correlation chart that conflicts, and the adjacent area PCI in conflict neighborhood region correlation chart is counted, and obtains collision count analytical table；Row in conflict analysis of accounts table are sorted by step 5 from big to small, and the PCI that is designated as that will come top N conflicts serious cell, and N values are natural number；Step 6, picks out top N PCI and conflicts qualified cell in serious cell, carries out that PCI is planned again or wireless work ginseng is readjusted.
Description
Technical field
The present invention relates to a kind of processing method of PCI conflicts in adjacent area in LTE wireless communication networks.
Background technology
LTE (Long Term Evolution, Long Term Evolution) system is had altogether including 504 PCI (Physical Cell
Indentifier, Physical Cell Identifier).These PCI points is 168 groups, and every group includes 3 PCI.PCI determines that cell signal is same
Whether step, signal demodulation succeed.Each cell correspondence only one PCI.When the number of cells in LTE network is more, can not
Occur that PCI is multiplexed with avoiding, i.e., multiple co-frequency cells use same PCI.If PCI planning is unreasonable, or due to small
Area's wireless parameter sets and causes area covered, then may lead the PCI conflicts between co-frequency cell.
PCI conflicts include PCI collisions and the major class of PCI confusion two, when PCI collisions occurring or obscuring, will cause user terminal
Down channel evaluated error is larger, and so as to cause downlink throughput capacity to decline, while can cause the terminal cannot normally to switch, terminal is fallen
Line rate increases.During generation PCI confusion, if switching target small area includes the cell that there is PCI confusion, Serving cell cannot do
Go out correct handover decisions.
As the Fast Construction of 4G networks, PCI collision problems are more obvious, the business of user can be influenceed to use, especially existed
The complicated urban area of wireless environment, PCI conflicts need key problems-solving in turning into the network optimization.
Collided by there is PCI in existing network, PCI confusion collision problem is analyzed, the main cause that problem occurs has：Work is joined
There are 4 kinds of reasons of area covered in inaccurate, unreasonable, the improperly-configured, cell of planning.First three reason can join core by work
Pair and parameter verify quick discovery and fix a breakdown, and it is by cell more area that the PCI of the overwhelming majority conflicts in actual existing network
Cover and produce, this kind of conflict is more difficult to join the discovery of core counterpart method by work, and the method such as drive test then needs consuming substantial amounts of
Manpower and materials, this method will mainly solve the PCI conflicts that cell area covered is produced.
The content of the invention
Goal of the invention：The technical problems to be solved by the invention are being produced because of area covered for current generally existing
PCI collision problems, a kind of processing method of PCI conflicts in adjacent area in LTE wireless communication networks is provided using big data analysis.
In order to solve the above-mentioned technical problem, the invention discloses a kind of LTE wireless networks communication network, comprise the following steps：
Step 1, being selected in LTE wireless communication networks needs the region of optimization；The region exist certain PCI conflicts and
Number of cells is more, and quick PCI collision problems are investigated out using investigation mode is more difficult one by one.
Step 2, in the region that step 1 is selected, function is automatically configured using adjacent cell, the area cell is carried out automatically
Adjacent area interworking so that it is adjacent cell that all be mutually arranged the cell of area covered by the area cell；
Step 3, in the region of the adjacent area interworking completed in such as step 2, using network optimization tool (such as OMSTAR of Huawei,
In the instrument such as emerging Netnumen U31), extract the whole network homogeneous-frequency adjacent-domain relation table, form corresponds to (cell A, PCIa, cell A
Adjacent area B, PCIb), data screening is carried out to the table, only leave in table same Serving cell and adjacent area PCI identicals adjacent area closed
System, that is, select PCIb identical cells, and the relation table after screening is referred to as the neighborhood region correlation chart that conflicts；Form corresponds to (cell A, PCI
The adjacent area of a, PCIb, PCI=PCIb).
Step 4, is row label with the adjacent area PCI in the neighborhood region correlation chart that conflicts, and to the adjacent area in conflict neighborhood region correlation chart
PCI is counted, and analyzes conflict relationship, obtains collision count analytical table；(the adjacent area of cell A, PCIa, PCI b, PCI=PCIb
Number), analyze conflict relationship.
Row in conflict analysis of accounts table are sorted by step 5 from big to small, and the PCI that is designated as that will come top N conflicts
Serious cell, N values are natural number；
Step 6, picks out top N PCI and conflicts qualified cell in serious cell, carry out PCI plan again or
Work that person is wireless ginseng is readjusted, and solves PCI collision problems.
LTE wireless communication networks described in step 1 of the present invention include a cell cluster, and a cell cluster includes two or more
Base station, base station includes more than one cell (generally comprising 1-3 cell), the corresponding only one physics of each cell
Cell ID PCI.
Cell cluster of the present invention has the neighboring BS information of automatic addition.
In step 6, qualified cell in the serious cell of top N PCI conflicts is picked out, referred specifically to：The cell is
More area's cell, and be the cell for being located at analyzed area center (regional center selected positioned at step 1).
Select and meet the cell of above-mentioned condition and carry out PCI and plan that (reassigning the PCI scopes not conflicted is carried out again again
Planning) or the wireless work ginseng adjustment such as angle of declination, azimuth is carried out, reach the purpose of the PCI collision alert quantity for reducing existing network.
For newly opening cell, can be intentional avoid use TOP N conflict PCI, so as to reduce PCI collision probabilities.
Brief description of the drawings
The present invention is done with reference to the accompanying drawings and detailed description further is illustrated, it is of the invention above-mentioned
And/or otherwise advantage will become apparent.
Fig. 1 is the neighborhood region correlation chart (analyzed with certain sample areas and illustrated) that conflicts in present invention implementation.
Fig. 2 is the serious PCI lists of TOP N conflicts (analyzed with certain sample areas and illustrated) in present invention implementation.
Schematic diagram of the Tu3Wei Mou cities conflict neighborhood region correlation chart on map.
Fig. 4 is the same frequency handover success rate schematic diagram after being adjusted.
Specific embodiment
Physical area sign (PCI) of LTE network, span is 0 to 503, and totally 504, each LTE cell needs to divide
With only one PCI be used for be different from adjacent cell, so just can guarantee that terminal accessed or service implementation in, can pass through
PCI is identified cell, because LTE number of cells is huge, therefore multiplexing PCI is certainly existed, when because work joins configuration or gets over
Area covers, and multiplexing PCI turns into mutually adjacent area, then PCI confusion or collision may occur.When generation PCI is collided or obscured, will cause
User terminal down channel evaluated error is larger, so as to cause downlink throughput capacity to decline, while can cause the terminal cannot normally to cut
Change, terminal disconnection rate increases.
For the region that PCI confusion or collision occur, carrying out drive test and the ginseng investigation of work one by one can expend substantial amounts of manpower
Material resources, the present invention is analyzed when the planning of LTE wireless networks and optimization is carried out using big data, filters out the PCI in the presence of conflict
And cell distribution, the cell for clashing is planned or Radio Parameter Adjustment again, so as to realize quickly solving area
The problem of PCI conflicts in domain.
Step 1, selectes the region for needing optimization, and the region there is certain PCI conflicts and number of cells is more, using by
One investigation mode is more difficult quick to investigate out PCI collision problems.
Step 2, in the selection area as belonging to step 1, function is automatically configured using adjacent cell, enters the area cell
The automatic adjacent area interworking of row, so that it is adjacent cell that all can be mutually arranged the cell of area covered by cell.
Step 3, in the region of the adjacent LTE cells adjacent area interworking completed in such as step 2, using network optimization tool, extracts complete
Net homogeneous-frequency adjacent-domain relation table, form corresponds to (the adjacent area B, PCIb of cell A, PCIa, cell A), data screening is carried out to the table,
Same Serving cell and adjacent area PCI identical neighboring BS relationship in the table of homogeneous-frequency adjacent-domain are only left, that is, selects PCIb identical cells, sieve
Relation table after choosing is referred to as the neighborhood region correlation chart that conflicts, and form is corresponded to (adjacent area of cell A, PCIa, PCIb, PCI=PCIb).
Step 4, the conflict neighborhood region correlation chart completed using such as step 3 is with the adjacent area PCI in the neighborhood region correlation chart that conflicts
Row label, and (the adjacent area of cell A, PCIa, PCI b, PCI=PCIb is counted to the adjacent area PCI in conflict neighborhood region correlation chart
Number), conflict relationship is analyzed, (by diagram length is limited, what is shown in Fig. 1 is sequence number, in practical application, answers table as shown in Figure 1
State is PCI yards).
Step 5, the PCI collision count analytical tables completed using such as step 4, is sorted from big to small to count column, can
The PCI serious to analyze TOP N conflicts, (by diagram length is limited, what is shown in Fig. 2 is sequence number, actual as shown in Figure 2
In, PCI yards should be expressed as).
Step 6, the serious PCI related cells of the TOP N for obtaining conflicts are analyzed for by step 1-5, carry out PCI again
Planning or wireless work ginseng are readjusted, and solve PCI collision problems.
The above method is except for investigating identical PCI, it is also possible to investigate the cell of the interference of PCI moulds three, in step 3,
PCIb (mod3) identical cell may be selected, the screening conflict relationship form of rear mold three corresponds to (cell A, PCIa, PCIb
(mod3), the adjacent area B of PCI (mod3)=PCIb (mod3)), below step 4-5 is consistent with upper.
Embodiment 1
Carry out the PCI conflict analysis to T operators of A cities, open adjacent area and automatically configure function, neighboring BS relationship is rushed in completion
Table, is row label with the adjacent area PCI in the neighborhood region correlation chart that conflicts, and the adjacent area PCI in conflict neighborhood region correlation chart is counted,
Count column is sorted from big to small again, is completed TOP N conflict relationship tables as follows, as shown in Fig. 2 A cities " B is small
Area " has 94 neighboring BS information to occur obscuring.The conflict neighborhood region correlation chart of the cell is presented on map, effect is as shown in Figure 3.
By Fig. 3, it can be found that all there is neighboring BS relationship, Er Qieyu with the cell of periphery about 10km or so in " B cells "
Its main coverage direction is consistent (deflection is 0), it can be concluded that the cell has more area.
By above-mentioned discovery, in T operators of A cities existing network, the conflict of PCI=51 is the most serious.Day is carried out to the cell
Feedback adjustment, adjusts coverage, and Bing Duiyue areas part is deleted neighboring BS relationship, is adjusted, and is had than before with frequency handover success rate
It is obviously improved, as shown in Figure 4.
As can be seen here, the method for analysis test PCI conflicts of the invention can fast and effeciently position the region of PCI conflicts
And the PCI for being conflicted, be analyzed by the neighboring BS information of the automatic addition to PCI conflict districts, it can be found that cell more
Area's coverage condition.Only need to be analyzed by configuring because of it, data acquisition is simple, after adjustment staining effect in time, without carrying out
Drive test, is a kind of network optimization analysis method of inexpensive.
Analyze the PCI conflict situations of existing network, it is also possible to effective planning for instructing the later stage, it is conscious less using conflict
PCI planned, it is possible to reduce the PCI collision probabilities of existing network, lifted network overall performance.
The invention discloses a kind of processing method of PCI conflicts in adjacent area in LTE wireless communication networks, the technology is implemented
The method and approach of scheme are a lot, and the above is only the preferred embodiment of the present invention, it is noted that for the art
Those of ordinary skill for, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these change
Enter and retouch and also should be regarded as protection scope of the present invention.Each part being not known in the present embodiment can use prior art to add
To realize.
Claims (5)
1. the processing method that adjacent area PCI conflicts in a kind of LTE wireless communication networks, it is characterised in that comprise the following steps：
Step 1, being selected in LTE wireless communication networks needs the region of optimization；
Step 2, in the region that step 1 is selected, function is automatically configured using adjacent cell, the area cell is carried out automatic neighbour
Area's interworking so that it is adjacent cell that all be mutually arranged the cell of area covered by the area cell；
Step 3, in the region of the adjacent area interworking completed in step 2, using network optimization tool, extracts the whole network homogeneous-frequency adjacent-domain relation
Table, data screening is carried out to the table, only leaves same Serving cell and adjacent area PCI identical neighboring BS relationship, the relation after screening
Table is referred to as the neighborhood region correlation chart that conflicts；
Step 4, is row label with the adjacent area PCI in the neighborhood region correlation chart that conflicts, and the adjacent area PCI in conflict neighborhood region correlation chart is entered
Row is counted, and analyzes conflict relationship, obtains collision count analytical table；
Row in conflict analysis of accounts table are sorted by step 5 from big to small, and the PCI that is designated as that will come top N conflicts serious
Cell, N values be natural number；
Step 6, picks out qualified cell in the serious cell of top N PCI conflicts, carries out PCI and plans again or nothing
Line work ginseng is readjusted.
2. method according to claim 1, it is characterised in that LTE wireless communication networks described in step 1 is small comprising
Area's cluster a, cell cluster includes more than two base stations, and a base station includes more than one cell, and each cell correspondence is unique
One Physical Cell Identifier PCI.
3. method according to claim 2, it is characterised in that the cell cluster has the neighboring BS information of automatic addition.
4. method according to claim 3, it is characterised in that qualified cell described in step 6, refers specifically to：Should
Cell Shi Yue areas cell, and be the cell for being located at analyzed area central area.
5. method according to claim 4, it is characterised in that in step 6, the PCI that carries out is planned or wirelessly again
Work ginseng is readjusted and referred specifically to：Reassign the PCI scopes not conflicted to be planned again, or carry out angle of declination, azimuth
Wireless work ginseng adjustment.
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Cited By (1)
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| WO2020164373A1 (en) * | 2019-02-13 | 2020-08-20 | 华为技术有限公司 | Communication method, apparatus and system, and storage medium |
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Address after: 210019 No. 58 East Street, Nanxi River, Jianye District, Nanjing, Jiangsu Applicant after: Zhong Tong clothing consulting and Design Research Institute Co., Ltd. Address before: 210019 No. 58 East Street, Nanxi River, Jianye District, Nanjing, Jiangsu Applicant before: Jiangsu Posts & Telecommunications Planning and Designing Institute Co., Ltd. |
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Application publication date: 20170531 |