CN105898773B - The bearing calibration and system of propagation model - Google Patents
The bearing calibration and system of propagation model Download PDFInfo
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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
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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
- H04W16/22—Traffic simulation tools or models
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/06—Testing, supervising or monitoring using simulated traffic
Abstract
The present invention relates to a kind of bearing calibration of propagation model and systems.Wherein method includes: to obtain the topography and geomorphology information of the overlay area of base station signal, and establish rectangular coordinate system in space according to the overlay area；The overlay area is divided by multiple models according to the topography and geomorphology information in the rectangular coordinate system in space and corrects section；Coverage test is carried out to the overlay area, obtains the test data in each model correction section；Using the test data in the model correction section simulation and prediction is carried out to propagation model respectively, obtains the model correction parameter in each model correction section.Under the premise of the present invention is analyzed by the topography and geomorphology to overlay area, overlay area is divided into smaller region and individually carries out propagation model revision, more can really reflect the coverage property of actual scene.
Description
Technical field
The present invention relates to mobile communication technology fields, more particularly to the bearing calibration and system of a kind of propagation model.
Background technique
In a wireless communication system, electric wave is usually propagated in irregular non-single environment.When estimating channel loss,
Need to consider the topography and geomorphology on propagation path, it is considered however that the obstacles such as building, trees, electric pole.Different propagation
Model has the different scope of application, some are for urban environment, some are then for suburb.Moreover, each propagation model is only
It is just applicable within the scope of certain frequency range, distance and antenna height, being detached from this range just will affect precision of prediction, for same
Scene, a propagation model may not necessarily really reflect all scene characteristics under the scene.Therefore, suitable for specific environmental selection
Propagation model just seem particularly significant.
Currently, existing model correcting mode be by test zone carry out drive test, obtain a large amount of test data, and
Calculating is compared after handling test data with simulation calculation data, and then carries out propagation model revision, generally directed to
One covering scene corrects to obtain a set of propagation model revision parameter, and the geographical environment in a covering scene may be relatively more multiple
It is miscellaneous, it is possible to which that, comprising a variety of different sub-scene types, therefore, a set of propagation model may be only applicable for part subfield therein
Scape cannot effectively reflect the coverage property of all sub-scenes.
Summary of the invention
Based on this, it is necessary in view of the above-mentioned problems, a variety of different types in actual scene can really be reflected by providing one kind
Region overlay characteristic propagation model bearing calibration and system.
A kind of bearing calibration of propagation model, includes the following steps:
The topography and geomorphology information of the overlay area of base station signal is obtained, and space right-angle is established according to the overlay area and is sat
Mark system；
The overlay area is divided by multiple moulds according to the topography and geomorphology information in the rectangular coordinate system in space
Type corrects section；
Coverage test is carried out to the overlay area, obtains the test data in each model correction section；
Using the test data in the model correction section simulation and prediction is carried out to propagation model respectively, obtains each model
Correct the model correction parameter in section.
A kind of correction system of propagation model, comprising:
Acquisition module, the topography and geomorphology information of the overlay area for obtaining base station signal, and according to the overlay area
Establish rectangular coordinate system in space；
Division module, the topography and geomorphology information for being obtained in the rectangular coordinate system in space according to the acquisition module
The overlay area is divided into multiple model corrections section；
Test module obtains each mould that the division module divides for carrying out coverage test to the overlay area
The test data in type correction section；
Correction module, the test data in the model correction section for being obtained using the test module is to propagation model point
Not carry out simulation and prediction, obtain the model correction parameter in each model correction section.
The bearing calibration and system of above-mentioned propagation model are established according to the topography and geomorphology information of the overlay area of base station signal
Rectangular coordinate system in space is divided into multiple model correction sections to overlay area in a space rectangular coordinate system and carries out covering survey
Examination carries out emulation testing to propagation model using the test data in each model correction section respectively, obtains each model correction
Overlay area is divided into more by the model correction parameter in section under the premise of being analyzed by the topography and geomorphology to overlay area
Small region individually carries out propagation model revision, more can really reflect the coverage property of actual scene.
Detailed description of the invention
Fig. 1 is the bearing calibration flow chart of propagation model of the invention；
Fig. 2 is perspective view of the overlay area of embodiment on both horizontally and vertically；
Fig. 3 is the structural schematic diagram of the correction system of propagation model of the present invention.
Specific embodiment
The specific embodiment of the bearing calibration to propagation model of the invention and system work is retouched in detail with reference to the accompanying drawing
It states.
Technical solution of the present invention, be suitable for GSM (Global System for Mobile communications, entirely
Ball mobile communication system), TD-SCDMA (Time Division-Synchronous Code Division Multiple
Access, TD SDMA), WCDMA (Wideband Code Division Multiple Access, broadband code
Point multiple access) and the standards such as LTE (Long Term Evolution, long term evolution).Following specific embodiments are by taking LTE standard as an example.
Refering to what is shown in Fig. 1, Fig. 1 is the bearing calibration flow chart of propagation model of the invention, include the following steps:
S10: obtaining the topography and geomorphology information of the overlay area of base station signal, and it is straight according to the overlay area to establish space
Angular coordinate system.
In this step, it needs to obtain the base station signal overlay area tested, signal coverage areas may include more
The different types of scene of kind.
In one embodiment, step S10 may include as follows:
The topography and geomorphology information for obtaining the overlay area of base station signal, for the space of overlay area setting XYZ axis
Rectangular coordinate system, using base station location as coordinate origin；Resolution ratio is selected according to the scene of overlay area；Wherein, the resolution ratio
For test and the minimum precision of simulated point.
For example, carrying out topography and geomorphology analysis for overlay area, typical topography and landform character, such as indoor area are recorded
Office, toilet or the region for stopping wall more in domain etc.；Be also in outdoor cover region in this way, under general recordable
Non line of sight region in overlay area, such as building, massif etc..
For the overlay area, rectangular coordinate system is set, in conjunction with the size of the size setting resolution ratio of covering scene, wherein
Resolution ratio is the minimum precision of test and simulated point.If resolution sizes value is 1m, that is, indicates test and simulated point is all 1m*
The region of 1m, resolution ratio value is smaller, and computation complexity is higher, and general recommendations chooses different resolutions in combination with scene size
Rate size, for Same Scene, can set resolution sizes be it is fixed, practical application (topography and geomorphology, water can also be combined
Square to/vertical direction etc.) it is respectively set, such as resolution ratio is set as 1m in the horizontal direction, Vertical Square is set up
For 5m etc..
S20: according to the topography and geomorphology information overlay area is divided into the rectangular coordinate system in space more
A model corrects section；
In one embodiment, step S20 may include as follows:
The overlay area is carried out Type division according to the topography and landform character by S201；It preferably, can be according to institute
It states topography and landform character and the overlay area is divided into typical coverage area and general overlay area；Wherein, the typical case is covered
Cover area is to have the region of obvious obstacle in overlay area, between receiving point and base station；The general overlay area is allusion quotation
Other regions outside type overlay area；
For example, overlay area is divided into typical topography and geomorphology overlay area and general overlay area, wherein typical topography and geomorphology
Overlay area can be chosen for the region of block signal covering.Such as outdoor massif, building etc., the meeting of indoor scene
Discuss room, pillar etc.；Remaining region is then defined as general overlay area, is primarily referred to as indoor and outdoor area sighting distance region.
S202, on the rectangular coordinate system in space by the overlay area of each type carry out respectively horizontal direction and
Projection in vertical direction；
As shown in Fig. 2, Fig. 2 is perspective view of the overlay area on both horizontally and vertically.
It is to consider typical topography and geomorphology covering when considering the projection of typical topography and geomorphology overlay area in the horizontal direction
The projection of region on an x-y plane；It is to consider allusion quotation when considering the projection of typical topography and geomorphology overlay area in vertical direction
Projection of the type topography and geomorphology overlay area on X-Z or Y-Z plane.
In selection overlay area for a typical topography and geomorphology overlay area, it is denoted as i-th of typical landform geomorphic province,
The division for carrying out level correction section and vertical correction section, can be such that
Typical case's topography and geomorphology overlay area is subjected to the projection in horizontal direction, connects and is projected in base station and horizontal direction
The two o'clock (depending on the size at its midpoint is with resolution sizes) of figure, when will obtain projecting figure maximum, two o'clock and base station connect
The angle that line is constituted is the angle in model correction section, is defined as horizontal section angle, the line and X-axis of the two o'clock and base station
The angle of positive direction is defined as starting and terminal angle in the horizontal direction in the region, and the region that horizontal section angle includes is
Model corrects section, is defined as level correction section, and the size in level correction section is different because of topography and geomorphology difference, wherein the
I level correction section definition is ZoneHi, the horizontal section angle of correcting area is defined as αi。
By the above-mentioned projection carried out in horizontal direction to the region, next which is carried out to the throwing in vertical direction
Shadow, the two o'clock (depending on the size at its midpoint is with resolution sizes) of connection base station and projecting figure in vertical direction, will obtain
When projecting figure maximum, two o'clock and the angle that the angle that base station line is constituted is that model corrects section are defined as vertical section
The line of angle, the two o'clock and base station and the angle of Y-axis positive direction are defined as starting and terminal in the vertical direction in the region
Angle, the region that vertical section angle includes are model correction sections, are defined as vertical correction section, vertical correction section it is big
Small different because of topography and geomorphology difference, i-th of vertical correction section definition is ZoneVi, vertical section angle is defined as βi。
S203, the two o'clock of connection base station and projecting figure in horizontal direction, and obtain the level correction in model correction section
Section, horizontal section angle and starting and terminal angle in horizontal direction；Wherein, in projecting figure maximum, two o'clock and base
The angle that line of standing is constituted is the horizontal section angle that model corrects section, the line and X-axis positive direction of the two o'clock and base station
Angle be respectively starting and terminal angle in horizontal direction, the region that the horizontal section angle includes is model correction zone
Between level correction section；
S204, the two o'clock of connection base station and projecting figure in vertical direction, and obtain the vertical correction in model correction section
Section, vertical section angle and starting and terminal angle in vertical direction；Wherein, in projecting figure maximum, two o'clock and base
The angle that line of standing is constituted is the vertical section angle that model corrects section, the line and Y-axis positive direction of the two o'clock and base station
Angle be respectively starting and terminal angle in vertical direction, the region that the vertical section angle includes is model correction zone
Between vertical correction section；
Following general overlay areas in overlay area carry out interval divisions, select a general overlay area for
Example.
By the general overlay area in overlay area, carry out choosing certain angle respectively in the horizontal direction and the vertical direction
Degree is divided, which is defined as the level angle and vertical angle of general overlay area, and obtained region is level correction
Section and vertical correction section, obtain section both horizontally and vertically on starting and terminal angle, the wherein water in the region
Flat section angle is defined as α, and the value that vertical section angle is defined as β, α and β depends on the granularity divided equally.Such as α value is 1
Degree, the level angle of general overlay area are 10 degree, then in the horizontal direction of the general overlay area, divide into 10 moulds
Type corrects section, and the horizontal section angle in each model correction section is 1 degree.
In addition to partitioning model corrects section, the level angle in model correction section and vertical section angle, for convenience of subsequent
Test data is recorded, the specific angle position that each model is corrected to section is needed to record.Record cast corrects section
Specific angle position, as shown in the table.
1 level correction section record sheet of table
2 vertical correction section record sheet of table
Wherein, (α in above-mentioned tablei-start, αi-end) level side of i-th of the level correction section of instruction under rectangular coordinate system
To starting and final position, (βi-start, βi-end) vertical direction of i-th of the vertical correction section of instruction under rectangular coordinate system
Begin and final position, Zone indicate that model corrects section.
S205 records the horizontal section angle in the level correction section in the model correction section of each type overlay area respectively
Degree and the starting in horizontal direction and the starting in terminal angle and the vertical section angle and vertical direction in vertical correction section
And terminal angle.
S30: carrying out coverage test to the overlay area, obtains the test data in each model correction section；
In this step, coverage test is carried out to overlay area, imports test data, binding model corrects section processing and surveys
Try data.
In one embodiment, step S30 may include as follows:
S301 carries out coverage test for the test point of overlay area, obtains test data；Wherein, if the seat of test point
Mark is longitude and latitude, then converts rectangular co-ordinate for longitude and latitude；
S302 obtains test data according to the starting and terminal angle of the position of test point and each level correction section
To the level correction section that should belong to model correction section, the test data in each level correction section is obtained；
S303 obtains test data according to the starting and terminal angle of the position of test point and each vertical correction section
To the vertical correction section that should belong to model correction section, the test data in each vertical correction section is obtained.
The scheme of above-described embodiment, by overlay area topography and geomorphology analysis after, to overlay area from horizontal direction and
It is divided into single model correcting area in vertical direction, then carries out getting test ready in entire overlay area, after the completion of test,
Test data is analyzed, test data can be denoted as (x, y, z, RxPower) or be (Longitude, Latitude, RxPower),
Wherein, x, y, z are the coordinates of three-dimensional system of coordinate, and Longitude (hereafter writing a Chinese character in simplified form Longi) indicates the longitude of map, Latitude
(hereafter writing a Chinese character in simplified form Lati) indicates that the latitude of map, RxPower indicate to receive power, and test data is respectively corresponded each model
In correcting area, recording mode can be as shown in the table:
Test data record sheet in 3 level correction section of table
Test data record sheet in 4 vertical correction section of table
As shown in above-mentioned two table, test data is obtained in model correction section, in addition, when test point position is with longitude and latitude
When degree form is to coming out, rectangular co-ordinate can be converted to by longitude and latitude, following that method for transformation is briefly described:
Assuming that rectangular co-ordinate is using the earth centre of sphere as origin, origin to the arctic is positive Z axis, then latitude a, the space of longitude b
Rectangular co-ordinate are as follows:
The longitude and latitude value of map origin is first calculated, as follows:
Longi0=1/2* (minLongi+maxLongi)；
Lati0=1/2* (min Lati+max Lati)；
The coordinate value of following coordinates computed points, as follows:
X=geoDistanceJW (cellLongi, cellLati, Longi0, cellLati)；Wherein,
GeoDistanceJW is the matlab program that longitude and latitude is calculated using two o'clock distance；CellLongi indicates serving cell longitude,
CellLati indicates serving cell latitude；
Y=geoDistanceJW (cellLongi, cell Lati, cellLongi, Lati 0)；
GeoDistanceJW (Longi1, Lati 1, Longi2, Lati 2) function is as follows:
Longi1=Longi1* (pi/180)；Wherein, pi/180 expression indicates angular dimension with Circular measure；
Lati 1=Lati 1* (pi/180)；
Longi2=Longi2* (pi/180)；
Lati 2=Lati 2* (pi/180)；
Beta=acos (cos (Lati 1) .*cos (Lati 2) .*cos (Longi1-Longi2)+sin (Lati1) .*
sin(Lati2))；
Dist=R.*beta；
Wherein, beta indicates the factor, and dist indicates distance function, and R is earth radius, and RxPower is for difference in upper table
Standard can be defined under LTE standard and be denoted as RSRP, be denoted as RSCP under TD-SCDMA standard, be denoted as under WCDMA standard
RSCP is denoted as RXLEV etc. under GSM standard.
S40 carries out simulation and prediction to propagation model using the test data in model correction section respectively, obtains each
The model correction parameter in model correction section；
In one embodiment, step S40 may include as follows:
S401, first time propagation model revision:
Using test data in each level correction section in model correction section, selection propagation model is imitated
True prediction, obtains the emulation data in each level correction section；Propagation model school is carried out respectively to each level correction section
Just, the model correction parameter in each level correction section is obtained；
Test data and emulation data in level correction section are obtained, propagation model revision in level correction section is carried out,
Correction Strategies are summarized as follows:
Traditional communication model path loss formula can simplify as y=a+b*x, and wherein y is path loss, and a is model
In except with other model value summations apart from correlation, b is apart from related coefficient, and x is log10 (d), and d is apart from value.
If theoretical line is y=a+b*x, having n group measured value is (x1, y1), (x2, y2)……(xn, yn), they are in plane
It is in nearly lineal layout on coordinate.
If the quadratic sum of the difference of each measured value and theoretical value is minimum, then, this theoretical line is exactly that can most reflect actual measurement
The regression straight line of value.
Therefore,
Regression coefficient a is found out with partial derivative method, b can be obtained:
Or
(1) and (2) is solved equation, regression coefficient a and b is found out, obtains
After finding out b, (1) formula of substitution can find out a, and wherein a and b is propagation model revision parameter, be defined as horizontal section mould
Type correction parameter.
The model correction parameter in 5 level correction section of table
| Model corrects section number | Model correction parameter |
| ZoneH1 | (a1, b1) |
| …… | …… |
| ZoneHi | (ai, bi) |
The parameter of correction is as shown in table 5, and table 5 is the model correction parameter in level correction section.
S402, second of propagation model revision:
Using test data in each vertical correction section in model correction section, obtains and closed with vertical correction section
The model correction parameter in the level correction section of connection carries out simulation and prediction, obtains the emulation data in each vertical correction section；
Propagation model revision is carried out to each vertical correction section respectively, obtains the model correction parameter in each vertical correction section.
The model correction parameter for obtaining the level correction section that first time propagation model revision obtains, by model correction parameter
It substitutes into propagation model, coverage prediction is carried out to overlay area, obtains coverage prediction value.
The new coverage prediction value of above-mentioned acquisition obtains surveying in vertical correction section by the division to vertical correction section
Data and prediction data are tried, propagation model revision in vertical correction section is carried out, model is obtained and corrects interval model correction parameter.
After the correction of above-mentioned model, the model correction parameter in each model correction section is obtained, record is as follows:
The model correction parameter in 6 model of table correction section
| Model corrects section number | Model correction parameter |
| ZoneV1 | (a1, b1) |
| …… | …… |
| ZoneVi | (ai, bi) |
As shown above, (ai, bi) it is the model correction parameter that i-th of model corrects section.
After above-mentioned propagation model revision, a set of propagation model school is respectively obtained for each propagation model revision section
Positive parameter carries out coverage prediction using new propagation model revision parameter, coverage prediction value and simulation value is compared and analyzed,
The mean value error Mean Error and mean square deviation error RMS Error for calculating the two difference, as the Mean Error being calculated
And RMS Error is respectively less than or equal to MeanErrortargetAnd RMSErrortarget, then it is assumed that the secondary correction is met the requirements；
Wherein, MeanErrortargetIndicate mean value error target value, RMSErrortargetIndicate mean square deviation error target value.
Pass through above-mentioned MeanErrortargetAnd RMSErrortargetTwo indices assess above-mentioned correction result, take
Value combines depending on actual conditions.
By the above method, the model correction parameter in multiple models correction section for overlay area, benefit can be obtained
Coverage prediction is carried out with new propagation model revision parameter, is missed according to the mean value error and mean square deviation of coverage prediction value and simulation value
Difference, and be corrected within the scope of scheduled mean value error and mean square deviation error target, coverage property in scene can be better anticipated.
Refering to what is shown in Fig. 3, Fig. 3 is the structural schematic diagram of the correction system of propagation model of the invention, include the following steps:
Acquisition module, the topography and geomorphology information of the overlay area for obtaining base station signal, and according to the overlay area
Establish rectangular coordinate system in space；
Division module, the topography and geomorphology information for being obtained in the rectangular coordinate system in space according to the acquisition module
The overlay area is divided into multiple model corrections section；
Test module obtains each mould that the division module divides for carrying out coverage test to the overlay area
The test data in type correction section；
Correction module, the test data in the model correction section for being obtained using the test module is to propagation model point
Not carry out simulation and prediction, obtain the model correction parameter in each model correction section.
In one embodiment, the acquisition module can be further used for obtaining the ground of the overlay area of base station signal
Shape geomorphology information, for the rectangular coordinate system in space of overlay area setting XYZ axis, using base station location as coordinate origin；
Resolution ratio is selected according to the scene of overlay area；Wherein, the resolution ratio is the minimum precision of test and simulated point.
In one embodiment, the division module may include:
Type division unit, for the overlay area to be carried out Type division according to the topography and landform character；
Projecting cell, for the overlay area of each type to be carried out water respectively on the rectangular coordinate system in space
Square to the projection in vertical direction；
Horizontal division unit for connecting the two o'clock of projecting figure in base station and horizontal direction, and obtains model correction zone
Between level correction section, horizontal section angle and starting and terminal angle in horizontal direction；Wherein, in projecting figure maximum
When, the angle that two o'clock is constituted with base station line corrects the horizontal section angle in section, the line of the two o'clock and base station for model
Angle with X-axis positive direction is respectively starting and terminal angle in horizontal direction, the region that the horizontal section angle includes
The level correction section in section is corrected for model；
Vertical division unit for connecting the two o'clock of projecting figure in base station and vertical direction, and obtains model correction zone
Between vertical correction section, vertical section angle and starting and terminal angle in vertical direction；Wherein, in projecting figure maximum
When, two o'clock corrects the vertical section angle in section, the line of the two o'clock and base station with the angle that base station line is constituted for model
Angle with Y-axis positive direction is respectively starting and terminal angle in vertical direction, the region that the vertical section angle includes
It is the vertical correction section in model correction section；
Information recording unit, the model for recording each type overlay area respectively correct the level correction section in section
Horizontal section angle and the vertical section angle of starting and terminal angle and vertical correction section in horizontal direction and vertical
Starting and terminal angle on direction.
Preferably, the Type division unit can be further used for the covering according to the topography and landform character
Region division is typical coverage area and general overlay area；Wherein, the typical coverage area is to receive in overlay area
There is the region of obvious obstacle between point and base station；The general overlay area is other overseas regions of typical coverage area.
In one embodiment, the test module may include:
Coverage test unit carries out coverage test for the test point for overlay area, obtains test data；Wherein,
If the coordinate of test point is longitude and latitude, rectangular co-ordinate is converted by longitude and latitude；
Horizontal checkout unit, for the starting and terminal angle according to the position of test point and each level correction section,
Test data is obtained to the level correction section that should belong to model correction section, obtains the survey in each level correction section
Try data；
And
Perpendicular testing unit, for the starting and terminal angle according to the position of test point and each vertical correction section,
Test data is obtained to the vertical correction section that should belong to model correction section, obtains the survey in each vertical correction section
Try data.
In one embodiment, the correction module may include:
First correction unit, it is right for test data in each level correction section using model correction section
It selects propagation model to carry out simulation and prediction, obtains the emulation data in each level correction section；To each level correction section
Propagation model revision is carried out respectively, obtains the model correction parameter in each level correction section；
Second correction unit is obtained for test data in each vertical correction section using model correction section
The model correction parameter with the associated level correction section in vertical correction section is taken, simulation and prediction is carried out, obtains each vertical school
Emulation data in positive section；Propagation model revision is carried out to each vertical correction section respectively, obtains each vertical correction area
Between model correction parameter.
The bearing calibration of the correction system of propagation model of the invention and propagation model of the invention corresponds, above-mentioned
Technical characteristic and its advantages that the embodiment of the bearing calibration of propagation model illustrates are suitable for the correction system of propagation model
In the embodiment of system, hereby give notice that.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (12)
1. a kind of bearing calibration of propagation model, which comprises the steps of:
The topography and geomorphology information of the overlay area of base station signal is obtained, and rectangular space coordinate is established according to the overlay area
System；
The overlay area is divided by multiple model schools according to the topography and geomorphology information in the rectangular coordinate system in space
Positive section；
Coverage test is carried out to the overlay area, obtains the test data in each model correction section；
Using the test data in the model correction section simulation and prediction is carried out to propagation model respectively, obtains each model correction
The model correction parameter in section；
Wherein, it is described the overlay area is divided into according to the topography and geomorphology information in the rectangular coordinate system in space it is more
The step of a model correction section includes:
The overlay area is subjected to Type division according to the topography and landform character；
The overlay area of each type is carried out horizontally and vertically respectively on the rectangular coordinate system in space
On projection；
The two o'clock of projecting figure in base station and horizontal direction is connected, and obtains the level correction section in model correction section, level
Starting and terminal angle in section angle and horizontal direction；
The two o'clock of projecting figure in base station and vertical direction is connected, and obtains the vertical correction section, vertical in model correction section
Starting and terminal angle in section angle and vertical direction；
The horizontal section angle and level in the level correction section in the model correction section of each type overlay area are recorded respectively
The vertical section angle of starting and terminal angle and vertical correction section on direction and starting and terminal angle in vertical direction
Degree.
2. the bearing calibration of propagation model according to claim 1, which is characterized in that the covering for obtaining base station signal
The topography and geomorphology information in region, and the step of establishing rectangular coordinate system in space according to the overlay area includes:
The topography and geomorphology information for obtaining the overlay area of base station signal, for the space right-angle of overlay area setting XYZ axis
Coordinate system, using base station location as coordinate origin；
Resolution ratio is selected according to the scene of overlay area；Wherein, the resolution ratio is the minimum precision of test and simulated point.
3. the bearing calibration of propagation model according to claim 1, which is characterized in that the connection base station and horizontal direction
The two o'clock of upper projecting figure, and obtain model and correct in level correction section, horizontal section angle and the horizontal direction in section
Starting and terminal angle, comprising: in projecting figure maximum, two o'clock is that model corrects section with the angle that base station line is constituted
Horizontal section angle, the two o'clock and the line of base station and the angle of X-axis positive direction are respectively starting and end in horizontal direction
Point angle, the region that the horizontal section angle includes are the level correction section that model corrects section；
It is described connection base station and vertical direction on projecting figure two o'clock, and obtain model correction section vertical correction section,
Vertical section angle and starting and terminal angle in vertical direction, comprising: in projecting figure maximum, two o'clock and base station line
The angle constituted is the vertical section angle that model corrects section, the angle of the line and Y-axis positive direction of the two o'clock and base station
Starting and terminal angle respectively in vertical direction, the region that the vertical section angle includes are hanging down for model correction section
Straight correction section.
4. the bearing calibration of propagation model according to claim 1, which is characterized in that described special according to the topography and geomorphology
Levying the step of overlay area is carried out Type division includes:
The overlay area is divided into typical coverage area and general overlay area according to the topography and landform character；Wherein,
The typical coverage area is to have the region of obvious obstacle in overlay area, between receiving point and base station；It is described generally to cover
Cover area is other overseas regions of typical coverage area.
5. the bearing calibration of propagation model according to claim 1, which is characterized in that described to be carried out to the overlay area
Coverage test, obtaining the step of each model corrects the test data in section includes:
Coverage test is carried out for the test point of overlay area, obtains test data；Wherein, if the coordinate of test point is longitude and latitude
Degree, then convert rectangular co-ordinate for longitude and latitude；
According to the starting and terminal angle of the position of test point and each level correction section, test data is obtained to should belong to
The level correction section for stating model correction section, obtains the test data in each level correction section；
And
According to the starting and terminal angle of the position of test point and each vertical correction section, test data is obtained to should belong to
The vertical correction section for stating model correction section, obtains the test data in each vertical correction section.
6. the bearing calibration of propagation model according to claim 1, which is characterized in that described to utilize the model correction zone
Between test data simulation and prediction is carried out respectively to propagation model, obtain the step of the model correction parameter in each model correction section
Suddenly include:
Using test data in each level correction section in model correction section, selection propagation model emulate pre-
It surveys, obtains the emulation data in each level correction section；Propagation model revision is carried out to each level correction section respectively, is obtained
To the model correction parameter in each level correction section；
Using test data in each vertical correction section in model correction section, obtain associated with vertical correction section
The model correction parameter in level correction section carries out simulation and prediction, obtains the emulation data in each vertical correction section；To every
A vertical correction section carries out propagation model revision respectively, obtains the model correction parameter in each vertical correction section.
7. a kind of correction system of propagation model characterized by comprising
Module, the topography and geomorphology information of the overlay area for obtaining base station signal are obtained, and is established according to the overlay area
Rectangular coordinate system in space；
Division module, the topography and geomorphology information for being obtained in the rectangular coordinate system in space according to the acquisition module is by institute
It states overlay area and is divided into multiple model corrections section；
Test module obtains each model school that the division module divides for carrying out coverage test to the overlay area
The test data in positive section；
Correction module, for using the test module obtain model correction section test data to propagation model respectively into
Row simulation and prediction obtains the model correction parameter in each model correction section；
Wherein, the division module includes:
Type division unit, for the overlay area to be carried out Type division according to the topography and landform character；
Projecting cell, for the overlay area of each type to be carried out level side respectively on the rectangular coordinate system in space
To with the projection in vertical direction；
Horizontal division unit for connecting the two o'clock of projecting figure in base station and horizontal direction, and obtains model correction section
Level correction section, horizontal section angle and starting and terminal angle in horizontal direction；
Vertical division unit for connecting the two o'clock of projecting figure in base station and vertical direction, and obtains model correction section
Vertical correction section, vertical section angle and starting and terminal angle in vertical direction；
Information recording unit, the model for recording each type overlay area respectively correct the water in the level correction section in section
Flat section angle and the vertical section angle and vertical direction of starting and terminal angle and vertical correction section in horizontal direction
On starting and terminal angle.
8. the correction system of propagation model according to claim 7, which is characterized in that the acquisition module is further used
Topography and geomorphology information in the overlay area for obtaining base station signal is sat for the space right-angle of overlay area setting XYZ axis
Mark system, using base station location as coordinate origin；
Resolution ratio is selected according to the scene of overlay area；Wherein, the resolution ratio is the minimum precision of test and simulated point.
9. the correction system of propagation model according to claim 7, which is characterized in that the connection base station and horizontal direction
The two o'clock of upper projecting figure, and obtain model and correct in level correction section, horizontal section angle and the horizontal direction in section
Starting and terminal angle, comprising: in projecting figure maximum, two o'clock is that model corrects section with the angle that base station line is constituted
Horizontal section angle, the two o'clock and the line of base station and the angle of X-axis positive direction are respectively starting and end in horizontal direction
Point angle, the region that the horizontal section angle includes are the level correction section that model corrects section；
It is described connection base station and vertical direction on projecting figure two o'clock, and obtain model correction section vertical correction section,
Vertical section angle and starting and terminal angle in vertical direction, comprising: in projecting figure maximum, two o'clock and base station line
The angle constituted is the vertical section angle that model corrects section, the angle of the line and Y-axis positive direction of the two o'clock and base station
Starting and terminal angle respectively in vertical direction, the region that the vertical section angle includes are hanging down for model correction section
Straight correction section.
10. the correction system of propagation model according to claim 7, which is characterized in that the Type division unit, into one
Step is for being divided into typical coverage area and general overlay area for the overlay area according to the topography and landform character；Its
In, the typical coverage area is to have the region of obvious obstacle in overlay area, between receiving point and base station；It is described general
Overlay area is other overseas regions of typical coverage area.
11. the correction system of propagation model according to claim 7, which is characterized in that the test module includes:
Coverage test unit carries out coverage test for the test point for overlay area, obtains test data；Wherein, if surveying
The coordinate of pilot is longitude and latitude, then converts rectangular co-ordinate for longitude and latitude；
Horizontal checkout unit is obtained for the starting and terminal angle according to the position of test point and each level correction section
Test data obtains the test number in each level correction section to the level correction section that should belong to model correction section
According to；
And
Perpendicular testing unit is obtained for the starting and terminal angle according to the position of test point and each vertical correction section
Test data obtains the test number in each vertical correction section to the vertical correction section that should belong to model correction section
According to.
12. the correction system of propagation model according to claim 7, which is characterized in that the correction module includes:
First correction unit, for test data in each level correction section using model correction section, to selection
Propagation model carries out simulation and prediction, obtains the emulation data in each level correction section；Each level correction section is distinguished
Propagation model revision is carried out, the model correction parameter in each level correction section is obtained；
Second correction unit, for using the model correction section each vertical correction section in test data, obtain with
The model correction parameter in the associated level correction section in vertical correction section carries out simulation and prediction, obtains each vertical correction area
Interior emulation data；Propagation model revision is carried out to each vertical correction section respectively, obtains each vertical correction section
Model correction parameter.
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| CN109526019B (en) * | 2018-12-26 | 2022-04-08 | 国网湖南省电力有限公司 | Method for correcting wireless private network base station coverage propagation model based on measured data |
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| CN104519498A (en) * | 2013-09-27 | 2015-04-15 | 普天信息技术研究院有限公司 | Method for correcting wireless network communication model |
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| CN104519498A (en) * | 2013-09-27 | 2015-04-15 | 普天信息技术研究院有限公司 | Method for correcting wireless network communication model |
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