CN105873077A - Method and system capable of automatically selecting propagation model in wireless network planning - Google Patents
Method and system capable of automatically selecting propagation model in wireless network planning Download PDFInfo
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- CN105873077A CN105873077A CN201510024812.4A CN201510024812A CN105873077A CN 105873077 A CN105873077 A CN 105873077A CN 201510024812 A CN201510024812 A CN 201510024812A CN 105873077 A CN105873077 A CN 105873077A
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Abstract
The invention provides a method capable of automatically selecting a propagation model in wireless network planning. The method comprises steps of determining the range of each cell, doing statistical analysis of propagation environment characteristics of each cell in the range of each cell, and selecting a propagation model for each cell according to the propagation environment characteristics of each cell. The method can improve the configuration efficiency of cell propagation models and avoid blindness of manual configuration.
Description
Technical field
The present invention relates to communication technical field, be specifically related to a kind of wireless network planning automatically selects the method and system of propagation model.
Background technology
Along with the development of mobile communications network, wireless propagation environment presents day by day complicated characteristic, and the accuracy how improving wireless network planning is a difficult point of mobile communication research field.In this research field, the research to propagation model is very important part.Propagation model selection is the first stage of wireless network planning.The accuracy that propagation model selects affects accuracy and the reasonability of wireless network planning.
The propagation model used in wireless network planning at present has a variety of, big in network size, ground species many and be distributed scattered in the case of the most quick and precisely to configure propagation model be the problem needing research.The most conventional propagation model collocation method is manual configuration.
When the network planning is on a grand scale, the when of having hundreds of station, manually being picked out communities different for communication environments and be made into different propagation models, workload is the biggest.
Summary of the invention
For defect of the prior art, the present invention provides the method and system automatically selecting propagation model in a kind of wireless network planning, it is possible to increase the allocative efficiency of community propagation model, and avoids the blindness of human configuration.
For solving above-mentioned technical problem, the present invention provides techniques below scheme:
First aspect, the invention provides a kind of method automatically selecting propagation model in wireless network planning, including:
Determine the cell range of each community；
The communication environments characteristic of each community is added up in the cell range of each community；
Communication environments characteristic according to each community is that each community selects propagation model.
Wherein, the described cell range determining each community includes:
Obtain the average station distance of each community and neighbor cell, with the center of housing estate of each community as the center of circle, with the average station distance of each community and neighbor cell be the distance come of parameter conversion as radius, determine the cell range of each community.
Wherein, the average station distance obtaining each community and neighbor cell includes:
If cell i with and the distance of adjacent n the community of this cell i be respectively Di1, Di2..., Din, then cell i with the average station distance of neighbor cell is:
Wherein, the communication environments characteristic adding up each community in the cell range of each community includes:
Obtain various places thing type area in the cell range of each community and account for the ratio of the community gross area；
Obtain the height above sea level standard deviation in the cell range of each community.
Wherein, according to the communication environments characteristic of each community be each community select propagation model include:
Type of ground objects area in cell range according to each community accounts for the maximum type of ground objects of community total area ratio and described height above sea level standard deviation carries out the selection of each community propagation model.
Second aspect, the invention provides the system automatically selecting propagation model in a kind of wireless network planning, including:
Cell range determines unit, for determining the cell range of each community；
Statistic unit, for adding up the communication environments characteristic of each community in the cell range of each community；
Selecting unit, being used for according to the communication environments characteristic of each community is that each community selects propagation model.
Wherein, described cell range determine unit specifically for:
Obtain the average station distance of each community and neighbor cell, with the center of housing estate of each community as the center of circle, with the average station distance of each community and neighbor cell be the distance come of parameter conversion as radius, determine the cell range of each community.
Wherein, each community of described acquisition includes with the average station distance of neighbor cell:
If cell i with and the distance of adjacent n the community of this cell i be respectively Di1, Di2..., Din, then cell i with the average station distance of neighbor cell is:
Wherein, described statistic unit specifically for:
Obtain various places thing type area in the cell range of each community and account for the ratio of the community gross area；
Obtain the height above sea level standard deviation in the cell range of each community.
Wherein, described selection unit specifically for:
Type of ground objects area in cell range according to each community accounts for the maximum type of ground objects of community total area ratio and described height above sea level standard deviation carries out the selection of each community propagation model.
As shown from the above technical solution, wireless network planning of the present invention automatically selects the method and system of propagation model, carry out selecting propagation model as according to Lai Dui community by the communication environments characteristic in statistics cell range, improve the accuracy of selection, it is to avoid blindness during artificial selection.The method is big in wireless network scale simultaneously, type of ground objects kind many and be distributed scattered in the case of can improve work efficiency to the most differently configured propagation model in different districts.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of the method automatically selecting propagation model in the wireless network planning that one embodiment of the invention provides；
Described wireless network planning automatically selects when Fig. 2 is actual application the flow chart of the method for propagation model；
Fig. 3 is the structural representation of the system automatically selecting propagation model in the wireless network planning that one embodiment of the invention provides.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is carried out clear, complete description, obviously, described embodiment is a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
Fig. 1 shows the flow chart of the method automatically selecting propagation model in the wireless network planning that one embodiment of the invention provides, as it is shown in figure 1, the method automatically selecting propagation model in the wireless network planning of the present embodiment includes:
Step 101: determine the cell range of each community.
In this step, the cell range of each community is determined in such a way:
Obtain the average station distance of each community and neighbor cell, with the center of housing estate of each community as the center of circle, with the average station distance of each community and neighbor cell be the distance come of parameter conversion as radius, determine the cell range of each community.
Wherein, each community can calculate in the following manner with the average station distance of neighbor cell:
If cell i with and the distance of adjacent n the community of this cell i be respectively Di1, Di2..., Din, then cell i with the average station distance of neighbor cell is:
Here, the distance come with the average station distance of each community and neighbor cell for parameter conversion is:
If the average station distance of cell i and neighbor cell is Di, then withOrOr(k is the positive number more than or equal to 1) as radius, with the center of housing estate of each community as the center of circle, determines the cell range of each community.
Step 102: add up the communication environments characteristic of each community in the cell range of each community.
In this step, obtain various places thing type area in the cell range of each community and account for the ratio of the community gross area, and the height of the ratio that in type of ground objects area, each type of ground objects is accounted for the community gross area is ranked up；Obtain the height above sea level standard deviation in the cell range of each community.Wherein it is possible to the height above sea level standard deviation obtained according to the numerical map used in emulation in the cell range of each community.Here, height above sea level standard deviation the biggest expression cell range inland sea pulls up Fu Yue great, closer to alpine terrain.
Here, type of ground objects includes the types such as waters, ocean, forest, greenery patches, open ground, city, open ground, suburb, dense city, low-density city, cities and towns, rural area, high building.Table 1 below citing lists the implication of several type of ground objects ratio, certainly there is also other types of ground objects, describes in detail the most one by one.
Table 1
| Waters ratio | Type of ground objects is the weight proportion that the area in waters accounts for the community gross area |
| Ocean ratio | Type of ground objects is the weight proportion that the area of ocean accounts for the community gross area |
| Forest ratio | Type of ground objects is the weight proportion that the area of forest accounts for the community gross area |
| Greenery patches ratio | Type of ground objects is the weight proportion that the area in greenery patches accounts for the community gross area |
| Open ground, city ratio | Type of ground objects is the weight proportion that the area of open ground, city accounts for the community gross area |
| Open ground, suburb ratio | Type of ground objects is the weight proportion that the area of open ground, suburb accounts for the community gross area |
| Dense city ratio | Type of ground objects is the weight proportion that the area of dense city accounts for the community gross area |
| Low-density city ratio | Type of ground objects is the weight proportion that the area in low-density city accounts for the community gross area |
| Cities and towns ratio | Type of ground objects is the weight proportion that the area in cities and towns accounts for the community gross area |
| Rural area ratio | Type of ground objects is the weight proportion that the area in rural area accounts for the community gross area |
| High constructure ratio | Type of ground objects is the weight proportion that the area of high constructure accounts for the community gross area |
| Common building thing ratio | Type of ground objects is the weight proportion that the area of common building thing accounts for the community gross area |
| General rule building ratio | Type of ground objects is the weight proportion that the area of general rule building accounts for the community gross area |
| Parallel rule building ratio | Type of ground objects is that the area of parallel rule building accounts for the weight proportion of the community gross area |
| Irregular big building ratio | Type of ground objects is the weight proportion that the area of irregular big building accounts for the community gross area |
| Asymmetric buildings thing ratio | Type of ground objects is the weight proportion that the area of asymmetric buildings thing accounts for the community gross area |
| Undefined type of ground objects ratio | The area of undefined type of ground objects accounts for the weight proportion of the community gross area |
| Height above sea level standard deviation | Community inner height standard deviation |
Step 103: according to the communication environments characteristic of each community be each community select propagation model.
In this step, account for the maximum type of ground objects of community total area ratio according to the type of ground objects area in the cell range of each community and described height above sea level standard deviation carries out the selection of each community propagation model.
The method automatically selecting propagation model in wireless network planning described in the embodiment of the present invention, carry out selecting propagation model as according to Lai Dui community by the communication environments characteristic in statistics cell range, improve the accuracy of selection, it is to avoid blindness during artificial selection.The method is big in wireless network scale simultaneously, type of ground objects kind many and be distributed scattered in the case of can improve work efficiency to the most differently configured propagation model in different districts.
The embodiment of the present invention is when carrying out propagation model and automatically selecting, and with subdistrict position center as the center of circle, is the scope that radius defines community by the distance that average station distance is parameter conversion with adjacent area, provides foundation for division of cells.
Fig. 2 shows the flow chart of the method automatically selecting propagation model when reality is applied in described wireless network planning, when reality is applied, sees Fig. 2, in units of community, and execution following steps:
A1. cell i (initial value=0 of i) and the average station distance D of adjacent area are calculatedi, (can be as D for the distance that parameter conversion comes with the average station distance of cell i and neighbor celli/ 2) it is radius, determines the cell range of each community；
A2. in adding up communication environments characteristic, i.e. cell range in the range of cell i, various places thing type area accounts for the ratio in the gross area and height above sea level standard deviation, all type of ground objects ratios is sorted；
A3. it is that this community selects propagation model (type of ground objects and height above sea level standard deviation that base area thing area ratio is maximum carry out propagation model selection) according to community communication environments characteristic；
A4. judge whether community has traveled through, if so, perform A5；Otherwise cell number i is from increasing 1, performs A1；
A5. terminate.
Fig. 3 shows the structural representation of the system automatically selecting propagation model in the wireless network planning that one embodiment of the invention provides, as it is shown on figure 3, the system automatically selecting propagation model in the wireless network planning of the present embodiment includes that cell range determines unit 21, statistic unit 22 and selects unit 23.
Cell range determines unit 21, for determining the cell range of each community；
Statistic unit 22, for adding up the communication environments characteristic of each community in the cell range of each community；
Selecting unit 23, being used for according to the communication environments characteristic of each community is that each community selects propagation model.
Wherein, described cell range determine unit 21 specifically for:
Obtain the average station distance of each community and neighbor cell, with the center of housing estate of each community as the center of circle, with the average station distance of each community and neighbor cell be the distance come of parameter conversion as radius, determine the cell range of each community.
Wherein, each community can calculate in the following manner with the average station distance of neighbor cell:
If cell i with and the distance of adjacent n the community of this cell i be respectively Di1, Di2..., Din, then cell i with the average station distance of neighbor cell is:
Here, the distance come with the average station distance of each community and neighbor cell for parameter conversion is:
If the average station distance of cell i and neighbor cell is Di, then withOrOr(k is the positive number more than or equal to 1) as radius, with the center of housing estate of each community as the center of circle, determines the cell range of each community.
Wherein, described statistic unit 22 specifically for:
Obtain various places thing type area in the cell range of each community and account for the ratio of the community gross area, and the height of the ratio that in type of ground objects area, each type of ground objects is accounted for the community gross area is ranked up；Obtain the height above sea level standard deviation in the cell range of each community.Wherein, height above sea level standard deviation the biggest expression cell range inland sea pulls up Fu Yue great, closer to alpine terrain.
Wherein, described selection unit 23 specifically for:
Type of ground objects area in cell range according to each community accounts for the maximum type of ground objects of community total area ratio and described height above sea level standard deviation carries out the selection of each community propagation model.
The system automatically selecting propagation model in wireless network planning described in this embodiment can perform the method described in above-described embodiment, and its principle is similar with effect, and here is omitted.
Above example is merely to illustrate technical scheme, is not intended to limit；Although the present invention being described in detail with reference to previous embodiment, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. the method automatically selecting propagation model in a wireless network planning, it is characterised in that
Including:
Determine the cell range of each community；
The communication environments characteristic of each community is added up in the cell range of each community；
Communication environments characteristic according to each community is that each community selects propagation model.
Method the most according to claim 1, it is characterised in that described determine each community
Cell range include:
Obtain the average station distance of each community and neighbor cell, with the center of housing estate of each community
For the center of circle, with the distance that the average station distance of each community and neighbor cell comes for parameter conversion it is
Radius, determines the cell range of each community.
Method the most according to claim 2, it is characterised in that obtain each community and phase
The average station distance of adjacent cell includes:
If cell i with and the distance of adjacent n the community of this cell i be respectively Di1, Di2...,
Din, then cell i with the average station distance of neighbor cell is:
Method the most according to claim 1, it is characterised in that in the community of each community
In the range of add up the communication environments characteristic of each community and include:
Obtain various places thing type area in the cell range of each community and account for the ratio of the community gross area
Example；
Obtain the height above sea level standard deviation in the cell range of each community.
Method the most according to claim 4, it is characterised in that according to the biography of each community
Broadcasting environmental characteristics is that each community selects propagation model to include:
Type of ground objects area in cell range according to each community accounts for community total area ratio
Big type of ground objects and described height above sea level standard deviation carry out the selection of each community propagation model.
6. a wireless network planning automatically selects the system of propagation model, it is characterised in that
Including:
Cell range determines unit, for determining the cell range of each community；
Statistic unit, for adding up the propagation ring of each community in the cell range of each community
Border characteristic；
Selecting unit, being used for according to the communication environments characteristic of each community is that each community selects to pass
Broadcast model.
System the most according to claim 6, it is characterised in that described cell range determines
Unit specifically for:
Obtain the average station distance of each community and neighbor cell, with the center of housing estate of each community
For the center of circle, with the distance that the average station distance of each community and neighbor cell comes for parameter conversion it is
Radius, determines the cell range of each community.
System the most according to claim 7, it is characterised in that each community of described acquisition
Include with the average station distance of neighbor cell:
If cell i with and the distance of adjacent n the community of this cell i be respectively Di1, Di2...,
Din, then cell i with the average station distance of neighbor cell is:
System the most according to claim 6, it is characterised in that described statistic unit is concrete
For:
Obtain various places thing type area in the cell range of each community and account for the ratio of the community gross area
Example；
Obtain the height above sea level standard deviation in the cell range of each community.
System the most according to claim 9, it is characterised in that described selection unit has
Body is used for:
Type of ground objects area in cell range according to each community accounts for community total area ratio
Big type of ground objects and described height above sea level standard deviation carry out the selection of each community propagation model.
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| CN102118761A (en) * | 2009-12-30 | 2011-07-06 | 中兴通讯股份有限公司 | Method and device for correcting propagation model |
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- 2015-01-19 CN CN201510024812.4A patent/CN105873077A/en active Pending
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| US7286829B2 (en) * | 2004-07-05 | 2007-10-23 | Electronics And Telecommunications Research Institute | Base station selecting method in wireless network |
| CN101141765A (en) * | 2007-07-11 | 2008-03-12 | 中兴通讯股份有限公司 | Network simulation method in mobile communication system |
| CN101959199A (en) * | 2009-07-17 | 2011-01-26 | 中兴通讯股份有限公司 | Transmission environment dividing method and device based on existing network test data |
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Application publication date: 20160817 |