CN105163327B - A kind of method of wireless communication system network planning emulation - Google Patents

A kind of method of wireless communication system network planning emulation Download PDF

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Publication number
CN105163327B
CN105163327B CN201410224931.XA CN201410224931A CN105163327B CN 105163327 B CN105163327 B CN 105163327B CN 201410224931 A CN201410224931 A CN 201410224931A CN 105163327 B CN105163327 B CN 105163327B
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China
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base station
ground objects
type
shadow fading
station site
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CN201410224931.XA
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Chinese (zh)
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CN105163327A (en
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翟长昊
姜春霞
杨茜
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普天信息技术有限公司
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Abstract

This application discloses a kind of methods of 1, wireless communication system network planning emulation, comprising: A, the antenna extension eminence setting radio signal source in each base station site, wherein the antenna of different base station site is hung high different;B, for j-th of type of ground objects in electronic map, the wireless signal for (having the case where blocking) under sighting distance and non line of sight from i-th of base station site is received in its actual geographic region, the difference of two signal strengths is recorded as the shadow fading loss of i-th of base station site jth kind type of ground objects;The step is repeated until traversing each type of ground objects and each base station;C, the shadow fading loss of the various types of ground objects for the base station is configured in the configuration parameter table of each base station, and network plan simulation is carried out based on the shadow fading loss, exports the simulation result of coverage prediction.Application scheme can be improved wireless communication system network planning accuracy.

Description

A kind of method of wireless communication system network planning emulation

Technical field

This application involves the sides that wireless communication technology field more particularly to a kind of wireless communication system network planning emulate Method.

Background technique

Wireless network planning is according to covering demand, capacity requirement and other specific demands, in conjunction with the ground of overlay area Shape geomorphic feature designs the wireless network arrangement of reasonable, with the process of the smallest investment meet demand.Traditional wireless network Network planning process includes: demand analysis, network size pre-planning, site planning and exploration, network plan simulation.

For wireless network planning, the introducing of practical electronic map will make the assessment of communication environments more accurate, so Evaluation work needs to introduce the electronic map of the data formats such as MapInfo, PLANET, EET.Consider geographic factor to wireless signal It mainly include the data of following several types when the influence of propagation.

Digital elevation model (DEM) data: also referred to as height (Height) data, for describing Terrain Height Information.Number According to raster data structure is taken, i.e., the record format of gridden data is recorded from left to right, from top to bottom.In addition it is said there are also parameter Prescribed paper, including data block upper left angle point geographical coordinate, projection pattern, data resolution, data width and height.

Area feature covers (DOM) data: also referred to as atural object (clutter) data are specifically divided into 16 classes:

1, inland waters (Inland Water);

2, sea area (Ocean Area)

3, wetland (Wet land)

4, rural open ground (Open Land in Village)

5, Urban Parks (Park in Urban)

6, city open ground (Open Land in Urban)

7, greenery patches (Green Land)

8, forest (Forest)

9, high building (High Buildings (height > 40m))

10, common building (Common Buildings (20~40m))

11, parallel low building (Parallel and Lower Buildings (area > 20*40m))

12, large-scale low building (Larger and Lower Buildings (height < 20m))

13, the highly dense area in city (Dense Urban)

14, other low buildings (Others Lower Buildings (height < 20m))

15 suburbs (Town in Suburban)

16, rural (Village)

Data format also takes raster data structure, and data structure is consistent with dem data with Parameter File.

Linear ground object model (LDM) data: also referred to as vector (vector) data describe linear ground object situation, such as highway, street Road, main roads, railway, bridge, Region etc..Data storage uses vector data structure, linearly with segmental arc coordinate representation The plan-position of object.

For different planning requirements and building concentration, the geographical data bank of different accuracy can be selected.Building The data of 20m precision can be used in less intensive small city and suburb.The downtown area intensive for building, needs to use 5m precision includes the geodata of BDM.

During carrying out wireless network planning emulation in the prior art, the transmission of each single-point is calculated in the following way Loss: firstly, reading the terrestrial object information of single-point on map, shadow fading loss brought by different atural objects is obtained;Then root According to the propagation model that each website selects, each website is calculated to the path loss values of this point, this value is zooming out due to path And bring loss value, shadow fading loss value and path loss values are added as site to the transmission loss of single-point.

Wherein, shadow fading loss is according to the different corresponding fixed shading decline standards of type of ground objects (clutter) Difference obtains, and shadow fading standard deviation is arranged according to the default value or empirical value of existing network, and the ground species of each single-point Type be it is fixed, be also consistent relative to shadow fading loss obtained by each website.The shadow fading loss obtained in this way Value with actual value mismatch, certain regions by atural object serious shielding also can difference it is very big.On the other hand, due to each site Antenna hang it is high inconsistent, the height of single-point type of ground objects relative to each site should be also it is inconsistent, especially for The building type of various different heights in the environment of dense city, mountain area and hills environment.It is inconsistent due to relative altitude, no Practical shadow fading value with website to same type of ground objects is also inconsistent.

According to the above analysis it is found that all sites are for same during the wireless network planning emulation of the prior art The fixed shadow fading loss value of type of ground objects selection, the accuracy for not only resulting in signal strength is inadequate, can also make signal matter Amount cannot be guaranteed, and then influence the calculating of capacity, to influence wireless communication system network planning accuracy.

Summary of the invention

This application provides a kind of methods of wireless communication system network planning emulation, can be improved wireless communication system net Network plans accuracy.

A kind of method of wireless communication system network planning emulation provided by the embodiments of the present application, comprising:

A, the antenna that high base station site is hung in each different antennae hangs eminence setting radio signal source, wherein different The antenna of base station site is hung high different;

B, j-th of type of ground objects in electronic map is received in its actual geographic region and comes from i-th of base station site Sighting distance and non line of sight under (have the case where blocking) wireless signal, the difference of two signal strengths is recorded as i-th of base station station The shadow fading loss of location jth kind type of ground objects;The step is repeated until traversing each type of ground objects and each base station;

C, the shadow fading loss of the various types of ground objects for the base station is configured in the configuration parameter table of each base station, And network plan simulation is carried out based on the shadow fading loss, export the simulation result of coverage prediction.

Preferably, step B includes: to carry out repeatedly identical test for the same type of ground objects of single base station site, It is averaged the shadow fading loss for being recorded as the type of ground objects for the base station site.

As can be seen from the above technical solutions, varying environment difference site is obtained to same type of ground objects by actual measurement mode Shadow fading loss, the accuracy of shadow fading loss can be improved.It is more in line with actual conditions compared with the existing technology, it can To improve the confidence level of signal strength estimation, the accuracy to ensure signal quality more accurately embodies the distribution of capacity, in turn Improve the precision of wireless communication system network planning.

Detailed description of the invention

Fig. 1 is the method flow schematic diagram of wireless communication system network planning provided by the embodiments of the present application emulation.

Specific embodiment

To keep the technical principle, feature and technical effect of technical scheme clearer, below in conjunction with specific reality Example is applied technical scheme is described in detail.

The method flow of wireless communication system network planning emulation provided by the embodiments of the present application is as shown in Figure 1, include such as Lower step:

Step 101: hanging eminence in the antenna of each base station site and radio signal source is set;Wherein, different base station site Antenna hang it is high different;

Step 102: judging whether to have traversed all types of ground objects in electronic map, if so, executing step 105, otherwise Execute step 103:

Step 103: judging whether to have traversed all base station sites, if so, enabling j=j+1 return step 102, otherwise execute Step 104:

Step 104: label is the corresponding actual geographic region of kind of type of ground objects in electronic map, receives and comes from i-th The difference of the wireless signal for (having the case where blocking) under the sighting distance and non line of sight of a base station site, two signal strengths is recorded as SFij, SFij indicate the shadow fading loss of i-th of base station site jth kind type of ground objects;Enable i=i+1, return step 103;

Step 105: the shadow fading of the various types of ground objects for base station is configured in the configuration parameter table of each base station Surplus.

Step 106: input base station other parameters, including station are high, antenna type, antenna directional angle and base-station transmitting-power Equal call parameters.

Step 107: network plan simulation being carried out according to the above parameter, exports the simulation result of coverage prediction.The emulation It as a result include signal strength, signal quality and capacity etc..

Preferably, carrying out repeatedly identical test in step 104 to the same type of ground objects singly stood, being averaged note Record is the shadow fading loss for the type of ground objects of the base station site.

The foregoing is merely the preferred embodiments of the application, not to limit the protection scope of the application, it is all Within the spirit and principle of technical scheme, any modification, equivalent substitution, improvement and etc. done should be included in this Shen Within the scope of please protecting.

Claims (2)

1. a kind of method of wireless communication system network planning emulation characterized by comprising
A, eminence is hung in the antenna of each base station site and radio signal source is set, wherein the antenna of different base station site is hung high It is different;
B, for j-th of type of ground objects in electronic map, the view from i-th of base station site is received in its actual geographic region Away from the wireless signal that (has the case where blocking) under non line of sight, the difference of two signal strengths is recorded as i-th of base station site jth The shadow fading loss of kind type of ground objects;The step is repeated until traversing each type of ground objects and each base station;
C, the shadow fading loss of the various types of ground objects for the base station, and base are configured in the configuration parameter table of each base station Network plan simulation is carried out in the shadow fading loss, exports the simulation result of coverage prediction.
2. the method according to claim 1, wherein step B include: for single base station site samely Species type carries out repeatedly identical test, is averaged and is recorded as more than the shadow fading for the type of ground objects of the base station site Amount.
CN201410224931.XA 2014-05-26 2014-05-26 A kind of method of wireless communication system network planning emulation CN105163327B (en)

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CN105163327B true CN105163327B (en) 2019-01-11

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101741483A (en) * 2009-12-09 2010-06-16 广州天越电子科技有限公司 Emulation system for realizing wireless network communication field intensity covering
KR20130017501A (en) * 2011-08-11 2013-02-20 삼성전자주식회사 Device and method for controlling power of femto cell in the wireless communication system
CN103605110A (en) * 2013-12-03 2014-02-26 北京理工大学 Indoor passive target positioning method based on received signal strength

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101741483A (en) * 2009-12-09 2010-06-16 广州天越电子科技有限公司 Emulation system for realizing wireless network communication field intensity covering
KR20130017501A (en) * 2011-08-11 2013-02-20 삼성전자주식회사 Device and method for controlling power of femto cell in the wireless communication system
CN103605110A (en) * 2013-12-03 2014-02-26 北京理工大学 Indoor passive target positioning method based on received signal strength

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