CN102802165A - WLAN (Wireless Local Area Network) network field strength coverage simulation system and method based on CAD (Computer-Aided Design) platform - Google Patents
WLAN (Wireless Local Area Network) network field strength coverage simulation system and method based on CAD (Computer-Aided Design) platform Download PDFInfo
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- CN102802165A CN102802165A CN2012103052297A CN201210305229A CN102802165A CN 102802165 A CN102802165 A CN 102802165A CN 2012103052297 A CN2012103052297 A CN 2012103052297A CN 201210305229 A CN201210305229 A CN 201210305229A CN 102802165 A CN102802165 A CN 102802165A
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Abstract
The invention discloses a WLAN (Wireless Local Area Network) network field strength coverage simulation system based on a CAD (Computer-Aided Design) platform, which can finish indoor field strength simulation design automatically and fast on the CAD (Computer-Aided Design) platform, and is characterized by comprising a dielectric attenuation WLAN (Wireless Local Area Network) network transmission data base module, a WLAN (Wireless Local Area Network) network media definition and correction modeling module, a WLAN (Wireless Local Area Network) network AP (Access Point) independent laying-type field strength computational analysis module and a WLAN (Wireless Local Area Network) network AP (Access Point) combining-type field strength computational analysis module. The invention also comprises a WLAN (Wireless Local Area Network) network field strength coverage simulation method based on the CAD (Computer-Aided Design) platform and the system. Due to the technical scheme, the WLAN (Wireless Local Area Network) network field strength coverage simulation system and method based on the CAD (Computer-Aided Design) platform have the advantages of being strong in practicability and easy in use, being concise and visual, having wide application and the like.
Description
Technical field
The invention belongs to the radio network technique neck, the territory particularly relates to a kind of wlan network field intensity emulation of coverage capability system and method based on the CAD platform.
Background technology
Field strength measurement is to estimate and the major technique means of weighing wlan system network coverage situation, and the power of field intensity is to pay close attention to and study one of index in wlan network construction and the use.Along with popularizing day by day of Internet and being widely used of portable terminal (comprising notebook computer, smart mobile phone, PDA), people increase rapidly the demand that wireless IP inserts, and wireless lan (wlan) obtains application more and more widely.Under the positive input of each operator, communal facilitys such as airport, station and shopping center have all covered wlan network, and WLAN capable of using connects the internet.Advantages such as applying flexible, simple installation, the construction period that relies on wireless access technology itself to have is short, WLAN inserts means as a kind of high-speed radio, with cable network, makes up flexible, efficient, perfect broadband network.But; Because of a plurality of operators possibly coexist at areal; If wlan network planning is unreasonable, cause easily between the network the phase mutual interference or because of the more design of indoor wall lays AP or day line density are low excessively to cause that field intensity is low excessively, capacity is not enough, reduced user experience.
Also do not have a WLAN scheme simulation software to offer the designer now on the market and reasonably plan the WLAN covering system.In the design of WLAN coverage planning; The designer need carry out reliable evaluates calculation to each device parameters in the drawing design process; The designer in this process according to actual environment and network capacity demand; The design experiences of combination own is confirmed scheme again, and such assessment objectivity, accuracy are not high, and very high to designer's professional requirement.Like covering design is the just increase more greatly of workload with the mode that combines with indoor distributed system.
Above-mentioned situation all is the design and construction of wlan network, uses with popularization and has brought great difficulty.And the field intensity prediction technology that designs after preceding and the design can address the above problem.The field intensity prediction model of radio wave propagation has multiple, these models all be mostly according to each country under zones of different and orographic condition, record the lots of field measured data and obtain through the method for numerical statistic; Tangible limitation and deficiency are arranged; Because the actual measurement zone is limited, obtains the measured data quantity not sufficient, causes precision of prediction low; Problems such as effect and actual conditions difference are big have had a strong impact on the use and the construction of engineering.
Summary of the invention
To the problems referred to above; The objective of the invention is to overcome the deficiency of prior art, proposed a kind of precision of prediction high, do not need the field intensity measured data, accurately distinguish the wlan network field intensity emulation of coverage capability system and method based on the CAD platform of the concrete coverage of each frequency range.
For realizing the object of the invention, the technical scheme that is adopted is following: a kind of wlan network field intensity emulation of coverage capability system based on the CAD platform, and it can accomplish indoor field intensity design of Simulation automatically apace on the CAD platform, and it is characterized in that: it comprises:
-wlan network is propagated each diectric attenuation DBM: the different medium that is used for storing the existing architectural environment that obtains through the instrument actual measurement is to WLAN signal attenuation data;
Definition of-wlan network medium and correction MBM: be used for indoor distributed areas environment being carried out analytic definition and go out the wlan network field intensity factor of influence regional environment model that various things are set up the influence of WLAN signal in this zone according to each diectric attenuation DBM of wlan network propagation;
-wlan network AP lays mode field intensity computation analysis module separately: AP is laid separately under the situation of coverage mode by to the regional environment model present field intensity prediction model of coupling automatically; Automatically obtain data; The data computation of carrying out the field intensity covering of different frequency range is automatically distinguished effective overlay area of different segment, analyzes and point out out the overlay area of co-channel interference to it;
-wlan network AP closes road mode field intensity computation analysis module: AP is closed the road under the situation of indoor distributed system, pass through the regional environment model is mated present field intensity prediction model automatically; Automatically obtain data; Automatically carry out AP with antenna clustering carry out effective overlay area that data computation that the field intensity of different frequency range covers is distinguished different segment, analyze and point out out the overlay area of disturbing to it with frequently.
Further; Described attenuation data is for carrying out a large amount of sampling tests to the different medium in the existing architectural environment; Carry out the wlan network signal and in communication process, test, form the data of different medium WLAN signal attenuation through the loss of the required decay of different medium.
The present invention also comprises the wlan network field intensity emulation of coverage capability method based on the CAD platform based on said system, it is characterized in that: comprise the steps:
Step 1: designer's survey data and the data that combine wlan network to propagate in each diectric attenuation DBM define and proofread and correct MBM carries out each medium in the modeling definition environment to indoor environment kind through the wlan network medium;
Step 2: at the scene all kinds of medium sampling are proofreaied and correct then; Data after the correction are once more in the medium in the typing model; Be exactly that the frequency range of AP in the model is divided then, in the wlan network medium definition of dividing frequency range and proofread and correct MBM and draw the optimum frequency band allocative decision through analysis based on the roughly coverage of AP;
Step 3: system is according to following medium to WLAN signal attenuation in the information combination model of gathering AP after the frequency allocation well; Lay effective overlay area that mode field intensity computation analysis module calculates each AP separately through wlan network AP; And close road mode field intensity computation analysis module through wlan network AP and calculate the overlay area of each AP and combine the frequency range of every AP to analyze to have or not with band A P overlay area overlaid; Show the area coverage of each AP through different display modes; And to pointing out, so that the designer adjusts design with the overlapping covered emphasis of making of frequency AP;
Step 4:: add up each field intensity section and the percentage of the area occupied that interference region occurs and the information such as quantity of the AP of putting, so that understand the coverage condition and basic overview of completion back WLAN.
Adopt technique scheme, the technical characterstic of the wlan network field intensity emulation of coverage capability system and method based on the CAD platform of the present invention mainly embodies as follows:
1) practical: can to different regional environments based on database fast automatically the district join the field intensity prediction model and adopt Matching Algorithm, speed is fast, precision is high; With the measured data basically identical; And can judge the interference region that intersects with frequency range, can avoid satisfying planning, the design of wlan network Communication Engineering, construction; The examination demand, practical;
2) possess easy-to-use, concisely, characteristic intuitively: WLAN field intensity analogue system of the present invention secondary development on CAD; Operation interface is the same with CAD's; Operate fairly simple, clear; Simulation result is based on the state that different colours is filled the field intensity that shows the WLAN signal, can be intuitive, clear find out the coverage condition in the zone;
3) possesses the popularity of application: analogue system of the present invention; Application is not only to three big operators; The local area network (LAN) of simultaneously enterprises and individuals being built also adapts to simultaneously; Wireless local area oneself is built in picture hotel, office space etc., equally also is to do WLAN is resolved in emulation in the hope of first stage of the project covering purpose with this method.
Description of drawings
Fig. 1 is an analogue system basic block diagram of the present invention;
Fig. 2 is the basic flow sheet of emulation mode of the present invention;
Wherein: 1. wlan network field intensity emulation of coverage capability system, each diectric attenuation DBM of 11.WLAN Internet communication, the definition of 12.WLAN network medium and correction MBM, the 13.WLAN network AP based on the CAD platform lays mode field intensity computation analysis module separately, the 14.WLAN network AP is closed road mode field intensity computation analysis module.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is further specified.
Wlan network field intensity emulation of coverage capability system 1 based on the CAD platform as shown in Figure 1; It can accomplish indoor field intensity design of Simulation automatically apace on the CAD platform, it comprises: wlan network is propagated each diectric attenuation DBM 11: the different medium that is used for storing the existing architectural environment that obtains through the instrument actual measurement is to WLAN signal attenuation data; Definition of wlan network medium and correction MBM 12: be used for indoor distributed areas environment being carried out analytic definition and go out the wlan network field intensity factor of influence regional environment model that various things are set up the influence of WLAN signal in this zone according to each diectric attenuation DBM of wlan network propagation; Wlan network AP lays mode field intensity computation analysis module 13 separately: AP is laid separately under the situation of coverage mode through to the regional environment model present field intensity prediction model of coupling automatically; Automatically obtain data; The data computation of carrying out the field intensity covering of different frequency range is automatically distinguished effective overlay area of different segment, analyzes and point out out the overlay area of disturbing with frequently to it; Wlan network AP closes road mode field intensity computation analysis module 14: AP is closed the road under the situation of indoor distributed system, pass through the regional environment model is mated present field intensity prediction model automatically; Automatically obtain data; Automatically carry out AP with antenna clustering carry out effective overlay area that data computation that the field intensity of different frequency range covers is distinguished different segment, analyze and point out out the overlay area of disturbing to it with frequently.
Further; Described attenuation data is for carrying out a large amount of sampling tests to the different medium in the existing architectural environment; Carry out the wlan network signal and in communication process, test, form the data of different medium WLAN signal attenuation through the loss of the required decay of different medium.
The present invention also comprises the wlan network field intensity emulation of coverage capability method based on the CAD platform based on said system, comprises the steps:
Step 1: designer's survey data and the data that combine wlan network to propagate in each diectric attenuation DBM define and proofread and correct MBM carries out each medium in the modeling definition environment to indoor environment kind through the wlan network medium;
Step 2: at the scene all kinds of medium sampling are proofreaied and correct then; Data after the correction are once more in the medium in the typing model; Be exactly that the frequency range of AP in the model is divided then, in the wlan network medium definition of dividing frequency range and proofread and correct MBM and draw the optimum frequency band allocative decision through analysis based on the roughly coverage of AP;
Step 3: system is according to following medium to WLAN signal attenuation in the information combination model of gathering AP after the frequency allocation well; Lay effective overlay area that mode field intensity computation analysis module calculates each AP separately through wlan network AP; And close road mode field intensity computation analysis module through wlan network AP and calculate the overlay area of each AP and combine the frequency range of every AP to analyze to have or not with band A P overlay area overlaid; Show the area coverage of each AP through different display modes; And to pointing out, so that the designer adjusts design with the overlapping covered emphasis of making of frequency AP;
Step 4:: add up each field intensity section and the percentage of the area occupied that interference region occurs and the information such as quantity of the AP of putting, so that understand the coverage condition and basic overview of completion back WLAN.
Although specifically show and introduced the present invention in conjunction with preferred embodiment; But the those skilled in the art should be understood that; In the spirit and scope of the present invention that do not break away from appended claims and limited; In form with on the details the present invention is made various variations, be protection scope of the present invention.
Claims (3)
1. based on the wlan network field intensity emulation of coverage capability system of CAD platform, it can be in accomplishing indoor field intensity design of Simulation automatically apace on the CAD platform, and it is characterized in that: it comprises:
-wlan network is propagated each diectric attenuation DBM: the different medium that is used for storing the existing architectural environment that obtains through the instrument actual measurement is to WLAN signal attenuation data;
Definition of-wlan network medium and correction MBM: be used for indoor distributed areas environment being carried out analytic definition and go out the wlan network field intensity factor of influence regional environment model that various things are set up the influence of WLAN signal in this zone according to each diectric attenuation DBM of wlan network propagation;
-wlan network AP lays mode field intensity computation analysis module separately: AP is laid separately under the situation of coverage mode by to the regional environment model present field intensity prediction model of coupling automatically; Automatically obtain data; The data computation of carrying out the field intensity covering of different frequency range is automatically distinguished effective overlay area of different segment, analyzes and point out out the overlay area of co-channel interference to it;
-wlan network AP closes road mode field intensity computation analysis module: AP is closed the road under the situation of indoor distributed system, pass through the regional environment model is mated present field intensity prediction model automatically; Automatically obtain data; Automatically carry out AP with antenna clustering carry out effective overlay area that data computation that the field intensity of different frequency range covers is distinguished different segment, analyze and point out out the overlay area of disturbing to it with frequently.
2. the wlan network field intensity emulation of coverage capability system based on the CAD platform according to claim 1; It is characterized in that: described attenuation data is for carrying out a large amount of sampling tests to the different medium in the existing architectural environment; Carry out the wlan network signal and in communication process, test, form the data of different medium WLAN signal attenuation through the loss of the required decay of different medium.
3. based on the wlan network field intensity emulation of coverage capability method of CAD platform, it is characterized in that: adopt claim 1 or 2 described wlan network field intensity emulation of coverage capability systems, also comprise the steps: based on the CAD platform
Step 1: designer's survey data and the data that combine wlan network to propagate in each diectric attenuation DBM define and proofread and correct MBM carries out each medium in the modeling definition environment to indoor environment kind through the wlan network medium;
Step 2: at the scene all kinds of medium sampling are proofreaied and correct then; Data after the correction are once more in the medium in the typing model; Be exactly that the frequency range of AP in the model is divided then, in the wlan network medium definition of dividing frequency range and proofread and correct MBM and draw the optimum frequency band allocative decision through analysis based on the roughly coverage of AP;
Step 3: frequency allocation follows medium to WLAN signal attenuation in the information combination model of back system according to collection A P well; Lay effective overlay area that mode field intensity computation analysis module calculates each A P separately through wlan network AP; And close road mode field intensity computation analysis module through wlan network AP and calculate the overlay area of each A P and combine the frequency range of every AP to analyze to have or not with band A P overlay area overlaid; Show the area coverage of each AP through different display modes; And to pointing out, so that the designer adjusts design with the overlapping covered emphasis of making of frequency AP;
Step 4:: add up each field intensity section and the percentage of the area occupied that interference region occurs and the information such as quantity of the AP of putting, so that understand the coverage condition and basic overview of completion back WLAN.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106612510A (en) * | 2015-10-27 | 2017-05-03 | 华为技术有限公司 | Method and device for indoor coverage design |
| CN106874567A (en) * | 2017-01-17 | 2017-06-20 | 合肥工业大学 | A kind of WLAN project planning Visual Design Systems based on CAD diagram shape |
| CN112351436A (en) * | 2020-09-23 | 2021-02-09 | 温州职业技术学院 | Urban WLAN (Wireless local area network) density analysis system |
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| US20040090937A1 (en) * | 2002-11-13 | 2004-05-13 | Nokia Corporation | Method and apparatus for performing inter-technology handoff from WLAN to cellular network |
| 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 |
| CN101848355A (en) * | 2010-04-08 | 2010-09-29 | 上海东方明珠广播电视研究发展有限公司 | System and method for planning coverage networks of broadcasting and television |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20040090937A1 (en) * | 2002-11-13 | 2004-05-13 | Nokia Corporation | Method and apparatus for performing inter-technology handoff from WLAN to cellular network |
| 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 |
| CN101848355A (en) * | 2010-04-08 | 2010-09-29 | 上海东方明珠广播电视研究发展有限公司 | System and method for planning coverage networks of broadcasting and television |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106612510A (en) * | 2015-10-27 | 2017-05-03 | 华为技术有限公司 | Method and device for indoor coverage design |
| CN106874567A (en) * | 2017-01-17 | 2017-06-20 | 合肥工业大学 | A kind of WLAN project planning Visual Design Systems based on CAD diagram shape |
| CN112351436A (en) * | 2020-09-23 | 2021-02-09 | 温州职业技术学院 | Urban WLAN (Wireless local area network) density analysis system |
| CN112351436B (en) * | 2020-09-23 | 2022-09-09 | 温州职业技术学院 | Urban WLAN (Wireless local area network) density analysis system |
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