CN110213772A - CDMA pilot pollution and interference detection method, electronic equipment, storage medium - Google Patents
CDMA pilot pollution and interference detection method, electronic equipment, storage medium Download PDFInfo
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- CN110213772A CN110213772A CN201910293616.5A CN201910293616A CN110213772A CN 110213772 A CN110213772 A CN 110213772A CN 201910293616 A CN201910293616 A CN 201910293616A CN 110213772 A CN110213772 A CN 110213772A
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- 238000001514 detection method Methods 0.000 title claims abstract description 32
- 238000003860 storage Methods 0.000 title claims abstract description 9
- 238000009826 distribution Methods 0.000 claims abstract description 21
- 230000008859 change Effects 0.000 claims abstract description 16
- 238000005520 cutting process Methods 0.000 claims abstract description 13
- 230000004048 modification Effects 0.000 claims abstract description 9
- 238000012986 modification Methods 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000012360 testing method Methods 0.000 claims description 13
- 238000004364 calculation method Methods 0.000 claims description 6
- 238000004590 computer program Methods 0.000 claims description 6
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- 230000004069 differentiation Effects 0.000 claims description 4
- 239000013256 coordination polymer Substances 0.000 claims description 3
- 238000005457 optimization Methods 0.000 abstract description 6
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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Abstract
The present invention provides CDMA pilot pollution and interference detection method, comprising steps of acquisition network real time data, is analyzed network real time data, is found and location pilot Polluted area and interference region；Obtain Polluted area and base station distribution information, antenna for base station effective height information, cutting off rate in interference region, judge whether base station concentration or antenna for base station effective height diffrence reach threshold value, it is to be determined as pilot pollution, otherwise if cutting off rate reaches threshold value and BTS hardware fault-free, it is determined as Pilot Interference；By adjusting antenna for base station, base station cell transmission power, increase base station or indoor distribution, modification database parameter, change base station PN code optimization pilot signal.The present invention relates to electronic equipments and readable storage medium storing program for executing, for executing CDMA pilot pollution and interference detection method.The present invention can quickly and accurately detect and distinguish pilot pollution and interference, and optimize to the pilot signal of cdma network, can effectively promote network quality.
Description
Technical field
The present invention relates to mobile communication technology fields more particularly to CDMA pilot pollution and interference detection method, electronics to set
Standby, storage medium.
Background technique
The pilot pollution phenomenon of cdma network is embodiment of the cdma system as a self-interference system.Built in CDMA mobile phone
RAKE receiver there are three railway digital demodulating units and search unit, three railway digital demodulating units can decode three not all the way
With pilot signal, the different multipath signals of same pilot tone can also be decoded, when having more than three on the position where mobile phone
Ec/lo is greater than the pilot tone of T_ADD, then the 4th pilot tone is then the pollution sources of the first pilot tone, that is, generates pilot pollution phenomenon.When
When pilot pollution phenomenon occurs, extra pilot signal, not only without benefit, is instead for the pilot signal that mobile phone uses
A kind of interference source increases the ambient noise of system, leads to the rising of system frame error rate, influences system various functions, or even draw
Play call drop.
With the increase of base station, pilot signal that same place mobile phone receives increases, and especially multiple base stations are in a ring
Distribution or base station height differ biggish region, and area covered signal is serious, the strong waveguide frequency signal for causing a certain place to receive compared with
It is more, it is easy to form pilot pollution phenomenon.
The chance that the Pilot Interference phenomenon of cdma network occurs relative to pilot pollution phenomenon is less, but the phenomenon that cause
It is very serious, often lead to the generation of a large amount of call drop phenomenons.Pilot Interference phenomenon refer to received in same place mobile phone it is identical
It is interfered caused by PN code.
The generation main cause of Pilot Interference has two o'clock；First is that PN_OFFSET is not planned in wireless network planning
It is good, lead to the generation of ONE_WAY, TWO_WAY；Second is that with the continuous development of network, especially in some base station antenna heights
Bigger area is differed, pilot signal area covered is serious, and Pilot Interference phenomenon can also occur.
CDMA pilot pollution and interference phenomenon are to influence the principal element of cdma network quality, how quickly and accurately to be examined
Survey and distinguish pilot pollution and interference be the key that cdma network optimization in, even more the network optimization when carry out problem analysis on the spot,
Solve the problems, such as and take the premise of corresponding adjusting and optimizing measure.
Summary of the invention
For overcome the deficiencies in the prior art, one of the objects of the present invention is to provide CDMA pilot pollution and Interference Detections
Method solves and quickly and accurately detects and distinguish pilot pollution and interference and optimization problem.
The present invention provides CDMA pilot pollution and interference detection method, comprising the following steps:
Pilot signal is detected, network real time data is acquired, network real time data is analyzed, is found and location pilot is dirty
Region and interference region are contaminated, and searches pilot pollution source and interference source；
Testing result is distinguished, base station distribution information in the Polluted area and the interference region, antenna for base station are obtained
Effective height information, cutting off rate calculate base according to the base station distribution information and the antenna for base station effective height information respectively
Concentration of standing and antenna for base station effective height diffrence, judge whether base station concentration or antenna for base station effective height diffrence reach threshold
Value, is to be determined as pilot pollution, if otherwise the cutting off rate reaches threshold value and BTS hardware fault-free, is determined as that pilot tone is dry
It disturbs；
Optimizing pilot signal by adjusting antenna for base station, base station cell transmission power, increase base station or indoor distribution, is repaired
Change database parameter, change base station PN code optimizes the pilot signal of pilot pollution or interference region.
Further, if the detection pilot signal step further includes detecting CP failure, the calling of cell in ROP report
Lose, the alarm number of switching overtime reaches threshold value and base station is without hardware alarm, then determining cell coverage area, there are pilot tone dirts
Dye and Pilot Interference.
Further, the differentiation testing result step further includes detecting whether there are ONE_WAY, TWO_WAY phenomenon, is
Then it is determined as Pilot Interference.
Further, the differentiation testing result step further includes obtaining in the Polluted area and the interference region
Base station location effective height, by base station location effective height calculation base station position effective height diffrence, if base station position
It is set effective difference in height and reaches threshold value, be then determined as Pilot Interference.
Further, in the optimizing pilot signals step, by adjusting the azimuth of antenna for base station, pitch angle, height,
And the pilot signal of pilot pollution or interference region is optimized using the antenna of narrow lobe large gain, the antenna of high-gain.
Further, in the optimizing pilot signals step, by the pollution pilot tone in pilot pollution or interference region
Signal or the power of weak pilot signal reduce or increased the power of primary pilot signal to pilot pollution or interference
The pilot signal in region optimizes.
Further, the optimizing pilot signals step further includes planning the PN_OFFSET of newly-increased base station again, adjustment and
Change the base station PN code and neighbor table in newly-increased base station nearby sphere；Neighbor table is added in cell after change PN code.
Further, in the optimizing pilot signals step, by the handoff threshold T_ADD, the modification system that increase system
Permission soft switching subzone number the pilot signal of pilot pollution or interference region is optimized.
A kind of electronic equipment, characterized by comprising: processor；
Memory；And program, wherein described program is stored in the memory, and is configured to by processor
It executes, described program includes for executing CDMA pilot pollution and interference detection method.
A kind of computer readable storage medium, is stored thereon with computer program, it is characterised in that: the computer program
It is executed by processor CDMA pilot pollution and interference detection method.
Compared with prior art, the beneficial effects of the present invention are:
The present invention provides CDMA pilot pollution and interference detection method, comprising the following steps: detection pilot signal acquires net
Network real time data is analyzed network real time data, is found and location pilot Polluted area and interference region, and searches pilot tone
Pollution sources and interference source；Testing result is distinguished, obtaining Polluted area and the base station distribution information in interference region, antenna for base station has
Elevation information, cutting off rate are imitated, respectively according to base station distribution information and antenna for base station effective height information calculation base station concentration
With antenna for base station effective height diffrence, judge whether base station concentration or antenna for base station effective height diffrence reach threshold value, is to sentence
It is set to pilot pollution, if otherwise cutting off rate reaches threshold value and BTS hardware fault-free, is determined as Pilot Interference；Optimizing pilot letter
Number, by adjusting antenna for base station, base station cell transmission power, increase base station or indoor distribution, modification database parameter, change base
PN code of standing optimizes the pilot signal of pilot pollution or interference region.The present invention relates to electronic equipments and readable storage medium
Matter, for executing CDMA pilot pollution and interference detection method.The present invention can be detected quickly and accurately and distinguish pilot pollution
And interference, and the pilot signal of cdma network is optimized, it can effectively promote network quality.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention and the accompanying drawings.
A specific embodiment of the invention is shown in detail by following embodiment and its attached drawing.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is CDMA pilot pollution and interference detection method flow chart of the invention.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the present invention, it should be noted that not
Under the premise of conflicting, new implementation can be formed between various embodiments described below or between each technical characteristic in any combination
Example.
The phenomenon that pilot pollution and Pilot Interference cause general character is more, is mainly shown as that mobile phone calling and called are difficult, call is disconnected
Continuous, phenomena such as cutting off rate is high, CDMA pilot pollution and interference detection method, as shown in Figure 1, comprising the following steps:
Pilot signal is detected, drive test is the main method and means for detecting pilot pollution and interference, by road in drive test
Instrument and drive test software are surveyed, network real time data is acquired, network real time data is analyzed, is found and location pilot contaminated area
Domain and interference region, and search pilot pollution source and interference source；Drive test background analysis software and system performance analysis software also can
It is preferable to search and analyze pilot pollution and interference phenomenon, pilot pollution is such as analyzed and detected using HUAWU_LUCENT software,
Lucent cdma system ROP report in, using PNCHECK PCIALERTV31 software can analyze and detect ONE_WAY,
The Pilot Interferences phenomenon such as TWO_WAY.Preferably, if detection pilot signal step further includes the CP for detecting cell in ROP report
Failure, call lose, switching overtime alarm number reach threshold value and base station is without hardware alarm, then determine that cell coverage area is deposited
In pilot pollution and Pilot Interference.
Pilot pollution region usually occurs in base station compact district, such as urban district；Or occur in antenna for base station effective height phase
The biggish region of difference, in these regional signal area covereds than more serious, strong waveguide frequency signal is more, and signal is mixed and disorderly, mobile phone dereliction
Use pilot signal；Pilot Interference be typically due to PN_OFFSET planning it is bad, cause there are ONE_WAY, TWO_WAY phenomenon
's；The Pilot Interference of another more difficult detection is to typically occur in base station position caused by the base station in the presence of super remote area covered
It is set effective the case where the height is widely differing, such as there is situations such as mountain top base station or topography relatively high base station.
Testing result is distinguished, Polluted area and the base station distribution information in interference region, antenna for base station effective height are obtained
Information, cutting off rate, respectively according to base station distribution information and antenna for base station effective height information calculation base station concentration and base station
Antenna effective height is poor, judges whether base station concentration or antenna for base station effective height diffrence reach threshold value, is to be judged to leading
Frequency pollutes, if otherwise cutting off rate reaches threshold value and BTS hardware fault-free, is determined as Pilot Interference；Preferably, detection is distinguished
Result step further includes detecting whether there are ONE_WAY, TWO_WAY phenomenon, is to be determined as Pilot Interference.Preferably, it distinguishes
Testing result step further includes the base station location effective height obtained in Polluted area and interference region, effective by base station location
Height calculates base station location effective height diffrence and is determined as Pilot Interference if base station location effective height diffrence reaches threshold value.
Optimizing pilot signal by adjusting antenna for base station, base station cell transmission power, increase base station or indoor distribution, is repaired
Change database parameter, change base station PN code optimizes the pilot signal of pilot pollution or interference region.Preferably, optimization is led
In frequency signals step, by adjusting the azimuth of antenna for base station, pitch angle, height, and using antenna, the height of narrow lobe large gain
The antenna of gain optimizes the pilot signal of pilot pollution or interference region, enhances the intensity of primary pilot signal, reduces
Cause the pilot signal strength for polluting or interfering.To the pilot signal of then pollution sources, the pitching appropriate for increasing its antenna is answered
Angle controls the coverage area of its main lobe, reduces the influence to the pilot signal of other cells, improves the Ec/ of primary pilot signal
lo.It, cannot too big (mechanical tilt be generally less than 8 it should be noted that the adjustment of the pitch angle of antenna has certain limit
Degree), it is severely deformed that excessive antenna elevation angle will cause lobe, influences coverage effect.The azimuth of adjustment antenna can change small
The main lobe overlay area in area makes the pilot signal of pollution sources that a degree of transfer occur as needed, to reduce to other
The influence of cell.After antenna azimuth and pitch angle are all adjusted in place, if signal covering can't effectively be controlled to solve
Certainly pilot pollution and disturbed condition, can be using the method for reducing antenna height, to achieve the purpose that effectively to control covering.For
Special antenna type, is generally used for the place of specific demand, and common overlay area does not need particular antenna type generally
Come solve pilot pollution or interference situations such as, such as to climb the mountain road covering in, can using the antenna of narrow lobe large gain come
It is covered, mountain-climbing road can be covered with strong waveguide frequency signal in this way, avoid pollution of the pilot signal numerous under mountain to mountain-climbing road
And interference；In the high building that can not do indoor distribution, building can be covered upwards with high-gain aerial to reach and solve to lead in building
Frequency pollution and interference problem.
The purpose for adjusting base station cell transmission power is that the pilot power that intensity is not much different each other is made to pull open gap, makes area
Each pilot tone Ec/lo difference in domain is larger, to generate primary pilot tone, improves pilot pollution situation.Preferably, optimizing pilot
In signals step, reduced by the power to pollution pilot signal or weak pilot signal in pilot pollution or interference region
Or the power of primary pilot signal is increased, the pilot signal of pilot pollution or interference region is optimized, improve activation
The Ec/lo for collecting pilot tone achievees the purpose that improvement and solves pilot pollution situation.
If the telephone traffic in pilot pollution region is higher, unobvious by adjusting, effect of optimization, most effective solution is just
It is to increase base station or increase indoor distribution.Since due to, the pilot tone of newly-built base station or indoor distribution is led relative to generation
Path loss is smaller for the cell of frequency pollution, and power is in function of the former pilot pollution region much larger than original covering pilot tone
Rate, the cell of newly-built base station become the main serving cell in this region naturally, and due to the addition of new website so that the lo in this region
It obviously increases, the Ec/lo of original covering pilot tone will be reduced accordingly, and pilot pollution and disturbed condition are also just resolved.It is excellent
Choosing, optimizing pilot signals step further includes planning the PN_OFFSET of newly-increased base station again, and adjustment and the newly-increased base station of change are neighbouring
Base station PN code and neighbor table in range；The generality as existing for pilot pollution, for more dirty than more serious large-scale pilot tone
Contaminate region, it is preferred that soft by the handoff threshold T_ADD, the permission of modification system that increase system in optimizing pilot signals step
Switching cell number optimizes the pilot signal of pilot pollution or interference region, and the handoff threshold T_ADD for increasing system makes
The Ec/lo of some pilot tones is not able to satisfy the condition into activation collection, to achieve the purpose that eliminate pilot pollution；Modification system
Allow soft switching subzone number, be such as adjusted to 6 tunnels from 3 tunnels, so that the pilot number for entering activation collection increases, equally can achieve elimination
The purpose of pilot pollution.Pilot Interference is generated by same PN code, if by adjusting the antenna or reduction pilot power of base station
Pilot Interference cannot be effectively controlled, can be solved by changing the PN code of base station, the cell after change PN code is added adjacent
Table is occupied, the pilot signal for generating pollution or interference is made to become useful pilot signal.The PN code of change base station not only passes through planning
Software realization will also modify in conjunction with the relative position and influencing each other of actual topography and geomorphology, base station.
A kind of electronic equipment, characterized by comprising: processor；
Memory；And program, wherein program is stored in memory, and is configured to be executed by processor, journey
Sequence includes for executing CDMA pilot pollution and interference detection method.
A kind of computer readable storage medium, is stored thereon with computer program, it is characterised in that: computer program is located
It manages device and executes CDMA pilot pollution and interference detection method.
The present invention provides CDMA pilot pollution and interference detection method, comprising the following steps: detection pilot signal acquires net
Network real time data is analyzed network real time data, is found and location pilot Polluted area and interference region, and searches pilot tone
Pollution sources and interference source；Testing result is distinguished, obtaining Polluted area and the base station distribution information in interference region, antenna for base station has
Elevation information, cutting off rate are imitated, respectively according to base station distribution information and antenna for base station effective height information calculation base station concentration
With antenna for base station effective height diffrence, judge whether base station concentration or antenna for base station effective height diffrence reach threshold value, is to sentence
It is set to pilot pollution, if otherwise cutting off rate reaches threshold value and BTS hardware fault-free, is determined as Pilot Interference；Optimizing pilot letter
Number, by adjusting antenna for base station, base station cell transmission power, increase base station or indoor distribution, modification database parameter, change base
PN code of standing optimizes the pilot signal of pilot pollution or interference region.The present invention relates to electronic equipments and readable storage medium
Matter, for executing CDMA pilot pollution and interference detection method.The present invention can be detected quickly and accurately and distinguish pilot pollution
And interference, and the pilot signal of cdma network is optimized, it can effectively promote network quality.
More than, only presently preferred embodiments of the present invention is not intended to limit the present invention in any form；All current rows
The those of ordinary skill of industry can be shown in by specification attached drawing and above and swimmingly implement the present invention；But all to be familiar with sheet special
The technical staff of industry without departing from the scope of the present invention, is made a little using disclosed above technology contents
The equivalent variations of variation, modification and evolution is equivalent embodiment of the invention；Meanwhile all substantial technologicals according to the present invention
The variation, modification and evolution etc. of any equivalent variations to the above embodiments, still fall within technical solution of the present invention
Within protection scope.
Claims (10)
1.CDMA pilot pollution and interference detection method, it is characterised in that the following steps are included:
Pilot signal is detected, network real time data is acquired, network real time data is analyzed, is found and location pilot contaminated area
Domain and interference region, and search pilot pollution source and interference source；
Testing result is distinguished, it is effective to obtain base station distribution information in the Polluted area and the interference region, antenna for base station
Elevation information, cutting off rate, it is close according to the base station distribution information and the antenna for base station effective height information calculation base station respectively
Collection degree and antenna for base station effective height diffrence, judge whether base station concentration or antenna for base station effective height diffrence reach threshold value,
It is to be determined as pilot pollution, if otherwise the cutting off rate reaches threshold value and BTS hardware fault-free, is determined as Pilot Interference；
Optimizing pilot signal by adjusting antenna for base station, base station cell transmission power, increases base station or indoor distribution, modification number
The pilot signal of pilot pollution or interference region is optimized according to library parameter, change base station PN code.
2. CDMA pilot pollution as described in claim 1 and interference detection method, it is characterised in that: the detection pilot signal
If step further include detect the CP failure of cell in ROP report, call lose, switching overtime alarm number reach threshold value and
Base station then determines that there are pilot pollutions and Pilot Interference for cell coverage area without hardware alarm.
3. CDMA pilot pollution as described in claim 1 and interference detection method, it is characterised in that: the differentiation testing result
Step further includes detecting whether there are ONE_WAY, TWO_WAY phenomenon, is to be determined as Pilot Interference.
4. CDMA pilot pollution as described in claim 1 and interference detection method, it is characterised in that: the differentiation testing result
Step further includes the base station location effective height obtained in the Polluted area and the interference region, passes through the base station location
Effective height calculation base station position effective height diffrence is determined as pilot tone if the base station location effective height diffrence reaches threshold value
Interference.
5. CDMA pilot pollution as described in claim 1 and interference detection method, it is characterised in that: the optimizing pilot signal
In step, by adjusting the azimuth of antenna for base station, pitch angle, height, and using the antenna of narrow lobe large gain, high-gain
Antenna optimizes the pilot signal of pilot pollution or interference region.
6. CDMA pilot pollution as described in claim 1 and interference detection method, it is characterised in that: the optimizing pilot signal
In step, by the power to pollution pilot signal or weak pilot signal in pilot pollution or interference region carry out reduce or it is right
The power of primary pilot signal, which is increased, optimizes the pilot signal of pilot pollution or interference region.
7. CDMA pilot pollution as described in claim 1 and interference detection method, it is characterised in that: the optimizing pilot signal
Step further includes planning the PN_OFFSET of newly-increased base station again, the base station PN code in adjustment and the newly-increased base station nearby sphere of change
And neighbor table；Neighbor table is added in cell after change PN code.
8. CDMA pilot pollution as described in claim 1 and interference detection method, it is characterised in that: the optimizing pilot signal
In step, by increasing the handoff threshold T_ADD of system, modifying the permission soft switching subzone number of system to pilot pollution or interference
The pilot signal in region optimizes.
9. a kind of electronic equipment, characterized by comprising: processor；
Memory；And program, wherein described program is stored in the memory, and is configured to be held by processor
Row, described program include requiring method described in 1-8 any one for perform claim.
10. a kind of computer readable storage medium, is stored thereon with computer program, it is characterised in that: the computer program
It is executed by processor the method as described in claim 1-8 any one.
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Cited By (1)
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| CN111225408A (en) * | 2019-12-31 | 2020-06-02 | 京信通信系统（中国）有限公司 | SmallCell base station-based wireless environment monitoring method, device, equipment and storage medium |
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Application publication date: 20190906 |