CN108235355A - A kind of environmental simulation method and device - Google Patents
A kind of environmental simulation method and device Download PDFInfo
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- CN108235355A CN108235355A CN201611197226.0A CN201611197226A CN108235355A CN 108235355 A CN108235355 A CN 108235355A CN 201611197226 A CN201611197226 A CN 201611197226A CN 108235355 A CN108235355 A CN 108235355A
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/0082—Monitoring; Testing using service channels; using auxiliary channels
- H04B17/0087—Monitoring; Testing using service channels; using auxiliary channels using auxiliary channels or channel simulators
Abstract
The invention discloses a kind of environmental simulation method and device, the method includes：Get the statistical parameter corresponding to each region in the whole region of Target Wireless environment；Wherein, include at least two regions in the whole region of the Target Wireless environment；The statistical parameter includes at least the difference component for the signal strength for having each region；The statistical parameter corresponding to each region based on the Target Wireless environment, generation and the test environment corresponding to the Target Wireless environment, detection obtain the test parameter in the test environment；Wherein, the difference component for having test signal intensity is included at least in the test parameter；The difference component of difference component and signal strength based on the test signal intensity is fitted analysis, and adjustment mode to the test environment is determined based on the result of Fitting Analysis, with the test environment after being adjusted.
Description
Technical field
The present invention relates to the information management technique in the communications field more particularly to a kind of environmental simulation method and devices.
Background technology
It, can be by the spot in order to know and verify performance and performance of the target device under the wireless environment of particular tunnel
It measures and implements with Computer Simulation, also there is the scheme for implementing simulation by special wireless test field in addition.For example, pass through
Field survey investigates the signal propagation characteristic of the main wireless transmission band of 2.4GHz and 5GHz in subway tunnel, including channel
Decline, root just extend, channel stability, doppler spread and channel capacity；Alternatively, the first outfield is obtained respectively, outside second
The environmental parameter of field, second outfield is the outfield carried out to first outfield after scaled down, so as to fulfill second
Simulation of the outfield to the first outfield.
But existing reciprocity modeling scheme only accounts for the diminution of scene size, and the tunnel involved by patent of the present invention
How reciprocity the problem of the problem of this special screne of road does not contain only size reduction, former scheme are not given under micro scene
Simulate different user terminal movement speeds this key physical feature.And the equity simulation formula of former scheme is joined with target
Number and analog parameter degree of fitting can not reciprocity the defects of, for equity assessment bring ambiguity.
Invention content
It is a primary object of the present invention to propose a kind of environmental simulation method and device, it is intended to which solution exists in the prior art
The above problem.
To achieve the above object, a kind of environmental simulation method provided by the invention, including：
Get the statistical parameter corresponding to each region in the whole region of Target Wireless environment；Wherein, the mesh
It marks in the whole region of wireless environment and includes at least two regions；The statistical parameter includes at least the letter for having each region
The difference component of number intensity；
The statistical parameter corresponding to each region based on the Target Wireless environment, generation with the target without
Test environment corresponding to thread environment, detection obtain the test parameter in the test environment；Wherein, in the test parameter extremely
Include the difference component of test signal intensity less；
The difference component of difference component and signal strength based on the test signal intensity is fitted analysis, based on fitting point
The result of analysis determines the adjustment mode to the test environment, with the test environment after being adjusted.
The present invention provides a kind of environment simulator, and described device includes：
Test data statistical analysis module, it is right for getting each region institute in the whole region of Target Wireless environment
The statistical parameter answered；Wherein, include at least two regions in the whole region of the Target Wireless environment；The statistical parameter
Including at least the difference component for the signal strength for having each region；
Wireless environment peer feedback module, described in corresponding to each region based on the Target Wireless environment
Statistical parameter, generation and the test environment corresponding to the Target Wireless environment, detection obtain the test in the test environment
Parameter；Wherein, the difference component for having test signal intensity is included at least in the test parameter；
Parameter regulates and controls module, is intended for the difference component based on the test signal intensity and the difference component of signal strength
Analysis is closed, adjustment mode to the test environment is determined based on the result of Fitting Analysis, with the test environment after being adjusted.
A kind of environmental simulation method and device proposed by the present invention, it will be able to carry out signal using realistic objective wireless environment
The statistics of the difference component of quality based on the difference component of signal quality that statistics obtains, obtains test environment, then based on test environment
In test quality difference component and the difference component of signal quality be fitted to be adjusted so as to test environment to the end.In this way, energy
Enough embody different zones signal intensity situation in Target Wireless environment so that test environment is more bonded with Target Wireless environment.
Description of the drawings
Fig. 1 is environmental simulation of embodiment of the present invention method flow schematic diagram one；
Fig. 2 is environmental pattern of embodiment of the present invention method flow schematic diagram two；
Fig. 3 forms structure diagram one for environmental pattern of embodiment of the present invention device；
Fig. 4 forms structure diagram two for environmental pattern of embodiment of the present invention device；
Fig. 5 forms structure diagram three for environmental pattern of embodiment of the present invention device.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments.
Embodiment one,
An embodiment of the present invention provides a kind of environmental simulation method, as shown in Figure 1, including：
Step 101：Get the statistical parameter corresponding to each region in the whole region of Target Wireless environment；Its
In, include at least two regions in the whole region of the Target Wireless environment；The statistical parameter is each including at least having
The difference component of the signal strength in a region；
Step 102：The statistical parameter corresponding to each region based on the Target Wireless environment, generation and institute
The test environment corresponding to Target Wireless environment is stated, detection obtains the test parameter in the test environment；Wherein, the test
The difference component for having test signal intensity is included at least in parameter；
Step 103：The difference component of difference component and signal strength based on the test signal intensity is fitted analysis, base
The adjustment mode to the test environment is determined in the result of Fitting Analysis, with the test environment after being adjusted.
The main technical problems to be solved of the present embodiment are, under the simulating test device of proposition, with particular tunnel scene
It is practical measure based on, in the parameter that its true tunnel environment is simulated in device, more control final sender unit or its
He is tested to equip.It easily is disturbed and is not easy to increase the various troubles such as measurement scope so as to avoid carrying out at the scene testing.
The difference component of the signal strength proposed in embodiment, in limited test scene size and test user
Under movement speed, specifically describe out user and enter tunnel, crossing-river tunnel, be pierced by the signal quality that tunnel is undergone during this
Variation, so as to than existing similar scheme can more embody the particularity of scene.
The Target Wireless environment is the wireless environment in target tunnel.
Get the mode of the statistical parameter in the whole region of Target Wireless environment corresponding to each region, Ke Yiwei
Carry out the field survey under specific objective tunnel environment.The purpose of the test is the letter in order to obtain in target tunnel actual environment
The spatial distribution of road decline and the statistical distribution of Signal to Interference plus Noise Ratio, so as to have more than the prediction of simple computer simulation
Practical environmental parameter.The component is integrated with speed sensor, for determining position.Its record information include signal strength,
Signal interference ratio, multi-path information and geographical location and time.
The method further includes：Collect signal strength corresponding to the sampled point of at least one of each region and
Sampling time；Between calculating two adjacent sampled points of physical location at least one sampled point one by one, signal strength
Difference, using obtained result as the difference component of a signal strength of region.
Correspondingly, the method further includes：The target tunnel is divided into three regions；Wherein, three regions
Respectively：It is less than the base station in the region and the target tunnel of the first distance value with the base station distance in the target tunnel
Distance be more than the first distance value region and less than second distance value region and between the outlet in the target tunnel
Distance be less than third distance value region.Above-mentioned first distance value, second distance value and third distance value are according to reality
The setting that border situation carries out, the whole region in target tunnel can be formed by finally marking off three regions come.
Due to the difference of the base station location distance in tunnel, different channel fading and channel fading variation are had
Value and different Signal to Interference plus Noise Ratio changes in distribution, therefore according to carrying out nearly base station, remote to tunnel away from base station installation position geographical location
Base station, tunnel go out and (enter) three kinds of region divisions of mouth so that have deeper assurance, and to each to the measurement data of specific region
Region carries out signature analysis and the extraction of channel fading and Signal to Interference plus Noise Ratio.
Because the test point of tunnel environment is different from the relative position of base station, different channel fading and channel can be generated
Decline changing value, so needing to carry out region division according to distance to actual tunnel environment, more accurately to realize wireless ring
The equity in border.The test data in target tunnel can be sent to test control center, by testing control module to the data of test into
The controllable division of row.Such as nearly base station area, remote can be represented respectively by base station to three parts are divided between tunnel exit from the near to the distant
Base station area and tunnel exit area, the position in three regions is respectively labeled as after division：
Nearly base station area：[d0,αL]
Remote base station area：[αL,L-d1]
Tunnel exit area：[L-d1,L]
Wherein, d0For guard space around base station, d1For tunnel exit section length, 0 ＜ α ＜ ＜ 1-d1/ L, and d1For by
The maximum distance that base station influences outside tunnel, can be determined by base station testing result outside the tunnel near tunnel face, alternatively, for
Longer tunnel can be manually set as fixed value (such as 50m).
Since the particular tunnel of consideration is straight tunnel, the test data ratio in three sections of regions can be approximately one-dimensional distance
Ratio, i.e. (α L-d0):(L-αL-d1):d1, the division in three kinds of regions is determined by test control center.
It gets through the field test to target tunnel, obtains target tunnel physical parameter, sectionalization test data and outer
Portion's base station information；It is first depending on test data and divides nearly base station area, remote base station area and tunnel exit area, be then segmented to testing number
According to being counted, statistical parameter is obtained；Wherein, the statistical parameter includes at least the channel fading having in each region, letter
The dry parameters such as ratio, the difference component of signal strength of making an uproar；
It should be pointed out that the following formula may be used in the difference component calculating of signal quality：
Δ x (i, j)=x (ai,ti)-x(aj,tj)；Wherein, a represents the location of user equipment, for example can be certain
The location information of one sampled point, t represent to obtain the temporal information of signal strength, and x () represents signal strength.I, j is represented respectively
Two neighboring sampled point.
The time interval of difference can adjust according to testing requirement, and statistical analysis module will be handled data, system
Count out the probability distribution of the basic difference component.
The statistical parameter corresponding to described each region based on the Target Wireless environment, generation and the mesh
The test environment corresponding to wireless environment is marked, including：
The statistical parameter, the Target Wireless environment corresponding to each region based on the Target Wireless environment
Physical parameter and the test environment physical parameter, determine the transmission power of the master base station in the test environment.
In at least one sampled point that each region is further included in the statistical parameter, the noise figure of each sampled point
And frequency offseting value；
Correspondingly, determining the transmission power of the master base station in the test environment, the method further includes：
Based on the statistical parameter corresponding to the Target Wireless environment, tested for each in the test environment
Noise figure and frequency offseting value are added in region.
The detection obtains the test parameter in the test environment, including：
Get location information and movement speed of the test terminal in the test environment；And get the survey
The signal testing result that examination terminal reports；
Location information and the mobile speed of signal testing result and the test terminal based on the test terminal
Degree determines test environment test parameter corresponding at least one test zone.
The block diagram of specific implementation is as shown in Figure 2：
Master base station in test environment carries out preliminary wireless environment based on specific statistical parameter, to checkout area and covers
Lid；
Under the covering generated in the master base station of test environment, test statistics parameter, addition noise, interference, certain bits are relied on
Frequency shift (FS) etc. is put, realizes the preliminary generation of entire wireless environment；
The preliminary environmental information of generation is input to wireless environment equity output module, by the reciprocity output module
It is fitted inspection；Specifically, the Fitness Test can include：By channel fading in checkout area, Signal to Interference plus Noise Ratio, signal strength
The parameters such as difference component statistics and analysis result, analyzed with the statistical value degree of being fitted of authentic testing result, and will fitting
Inspection result inputs wireless environment peer feedback module.
The module is reflected what is handled according to test scene data and test data analysis as a result, carrying out reciprocity parameter
It penetrates.According to the length (being much smaller than target tunnel) of simulation test field, pass through the base station with target tunnel to test point distance, test
The transmission power of base station in the proportional comparison such as device movement speed and dynamic adjustment checkout area, to realize that target tunnel is true
Target device or target scene, are put into checkout area by the reciprocity test environment of real field scape wireless environment with reaching, and can be simulated
Go out the identical environment of particular tunnel and the effect for testing.
Signature analysis and extraction by target tunnel survey value, obtain the basic parameter of tunnel radio environment, are made
For the input of the present apparatus, (such as base station location, base station to tunnel go out and (enter) nothings such as the distance of mouth to the known physical parameter of integrating tunnel
Need the Given information of field survey), channel fading, Signal to Interference plus Noise Ratio to specified distance etc. carry out simulation generation.
The difference component of the difference component and signal strength based on the test signal intensity is fitted analysis, including：
Determine matched at least one sampled point in the test environment and Target Wireless environment；
The survey corresponding to each matched sampled point in the test environment and Target Wireless environment is got respectively
Try parameter and statistical parameter；
Respectively according to matched test parameter and statistical parameter in the test environment and Target Wireless environment, obtain
The difference component of the matched test signal intensity and the difference component of signal strength；
The difference component of difference component and signal strength based on the test signal intensity, is calculated match value.
The result based on Fitting Analysis determines the adjustment mode to the test environment, with the test after being adjusted
Environment, including：
Judge the match value corresponding to each test zone in the test environment, if meet default fit threshold；
If satisfied, it then determines not to be adjusted the test zone；If not satisfied, then it is directed to the master of the test zone
Base station carries out the adjustment of transmission power, with the test environment after being adjusted.
When carrying out dynamic power control, checkout area environment is most importantly scaled, be allowed to in real scene
Large-scale decline equity, while according to the relationship of signal strength, the difference component of signal strength and speed in test data, surveying
The wireless environment in the entire target tunnel of simulation in the short distance in examination hall.
During simple hypothesis field test, test point movement speed is at the uniform velocity v0, the time interval of test equipment record is t0,
Then per s0=v0t0Distance obtains a sampled point；It is assumed that in tunnel base station location to tunnel exit length be L0, then entire test
Obtain n altogether in the process0=L0/s0A sampled point；According to the division in three kinds of regions in a upper trifle, sampled point is divided in proportion
Cloth is in three regions.
Simultaneously, it is assumed that the total length of test device is L1, then can be by s every in checkout area1=L1/n0Corresponding one of distance is true
Real sampled point, i.e., for arbitrary cs1(c≥1,c∈N*) distance, there is the test value correspondence of real scene；According to real scene
Sampled point and checkout area in test master base station and test point actual range, dynamically adjust test emitter or
The transmission power of tested equipment is controlled, makes the variable quantity of signal strength before and after the signal strength and test point of test point, it is and true
The actual value (or reception value after the large-scale decline of data analysis) of scene sample point is corresponding, can also adjust accordingly accordingly
The movement speed of target device in whole checkout area.
Realization for Fitness Test part, then be need to channel fading trizonal in checkout area, Signal to Interference plus Noise Ratio,
Between the statistical values such as the difference component of received signal strength, with the statistical value of target tunnel field test, the calculating for degree of being fitted is public
Formula is：
The physical significance of degree of fitting formula is the benchmark of the averaged curve for the treatment of matched curve using two as fitting, degree of fitting
Codomain for [0,1], two curves are more similar, and degree of fitting is higher, and identical two curve matching degree are 1.
Embodiment two,
An embodiment of the present invention provides a kind of environment simulator, as shown in figure 3, including：
Test data statistical analysis module 31, for getting each region institute in the whole region of Target Wireless environment
Corresponding statistical parameter；Wherein, include at least two regions in the whole region of the Target Wireless environment；The statistics ginseng
Number includes at least the difference component for the signal strength for having each region；
Wireless environment peer feedback module 32, for the institute corresponding to each region based on the Target Wireless environment
Statistical parameter is stated, generation and the test environment corresponding to the Target Wireless environment, detection obtain the survey in the test environment
Try parameter；Wherein, the difference component for having test signal intensity is included at least in the test parameter；
Parameter regulates and controls module 33, is carried out for the difference component based on the test signal intensity and the difference component of signal strength
Fitting Analysis determines adjustment mode to the test environment based on the result of Fitting Analysis, with the test wrapper after being adjusted
Border.
Described device further includes：
Data acquisition module 34, for collecting the signal strength corresponding to the sampled point of at least one of each region
And the sampling time；
Correspondingly, test data statistical analysis module, for calculating physical location at least one sampled point one by one
Between two adjacent sampled points, the difference of signal strength, using obtained result as the difference of a signal strength of region
Component.
Apparatus of the present invention include separable front end data acquisition module, test data statistical analysis module, wireless environment pair
Wait feedback modules and parameter regulation and control module.Each module needs to work according to preset flow, as shown in figure 4, including target scene
Data acquire, and parameter automatically extracts analysis and device parameter regulation and control, so as to finally realize the simulation of tunnel scene.Specific mistake
Cheng Wei：It first has to choose the characteristic parameter and index that can rationally describe tunnel radio channel circumstance, it is then targetedly right
Target tunnel measures work, obtains the data of the true wireless channel environment in target tunnel, passes through data analysis and modeling
Characteristic parameter is extracted, and as the input of corresponding test data statistical analysis module, is then realized and spy by test device
Determine the reciprocity environment of the true wireless environment in tunnel.
It is understood that above-mentioned several modules can be arranged in a server；It can also be by data acquisition module
Block, which is separately separated out to be placed in practical target environment, carries out data monitoring and collection, and remaining three modules are placed on server
In.Concrete implementation scene is here without exhaustion.
Data acquisition module is separable components, can be used for carrying out the field survey under specific objective tunnel environment.It should
The purpose of test is the spatial distribution of channel fading and the statistical of Signal to Interference plus Noise Ratio in order to obtain in target tunnel actual environment
Cloth, so as to which the prediction than simple computer simulation has practical environmental parameter.The component is integrated with speed sense
Device is answered, for determining position.Its information recorded includes signal strength, signal interference ratio, multi-path information and geographical location and time.
Test data analysis processing module.The module will sort out reconnaissance data accordingly：Due in tunnel
The difference of base station location distance has different channel fading and channel fading changing value and different Signal to Interference plus Noise Ratio point
Cloth changes, therefore goes out and (enter) Kou Sanzhong areas to the nearly base station of tunnel progress, remote base station, tunnel according to away from base station installation position geographical location
Domain divides so that has deeper assurance to the measurement data of specific region, and channel fading is carried out to each region and is believed dry
Make an uproar than signature analysis and extraction.
Wireless environment peer feedback module.The knot that the module will be handled according to test scene data and test data analysis
Fruit carries out the parameter mapping of equity.According to the length (being much smaller than target tunnel) of simulation test field, pass through the base with target tunnel
It stands to the proportional comparisons such as test point distance, test device movement speed and dynamic and adjusts the transmitting work(of base station in checkout area
Rate to realize the reciprocity test environment of target tunnel real scene wireless environment, is put target device or target scene with reaching
Enter in checkout area, the identical environment of particular tunnel and the effect for testing can be simulated.
Followed by the realization of particular tunnel wireless environment generation simulator.Pass through the signature analysis of target tunnel survey value
And extraction, the basic parameter of tunnel radio environment is obtained, as the input of the present apparatus, the known physical parameter of integrating tunnel
(such as base station location, base station to tunnel go out and (enter) Given information without field survey such as distance of mouth), to specified distance
Channel fading, Signal to Interference plus Noise Ratio etc. carry out simulation generation.
The block diagram of whole device is as shown in figure 5, the Target Wireless environment is the wireless environment in target tunnel；Correspondingly,
Test data statistical analysis module, for the target tunnel to be divided into three regions；Wherein, three regions difference
For：With the base station distance in the target tunnel be less than the first distance value region, with the target tunnel in base station away from
From the region more than the first distance value and less than second distance value region and between the outlet in the target tunnel away from
From the region less than third distance value.Because the test point of tunnel environment is different from the relative position of base station, can generate different
Channel fading and channel fading changing value, so needing to carry out region division according to distance to actual tunnel environment, so as to more
The accurate equity for realizing wireless environment.The test data in target tunnel can be sent to test control center, by testing and control mould
Block carries out controllable division to the data of test.Such as it can divide by base station to three parts are divided between tunnel exit from the near to the distant
Nearly base station area, remote base station area and tunnel exit area are not represented, and the position in three regions is respectively labeled as after division：
Nearly base station area：[d0,αL]
Remote base station area：[αL,L-d1]
Tunnel exit area：[L-d1,L]
Wherein, d0For guard space around base station, d1For tunnel exit section length, 0 ＜ α ＜ ＜ 1-d1/ L, and d1For by
The maximum distance that base station influences outside tunnel, can be determined by base station testing result outside the tunnel near tunnel face, alternatively, for
Longer tunnel can be manually set as fixed value (such as 50m).
Since the particular tunnel of consideration is straight tunnel, the test data ratio in three sections of regions can be approximately one-dimensional distance
Ratio, i.e. (α L-d0):(L-αL-d1):d1, the division in three kinds of regions is determined by test control center.
The effect at wireless environment peer processes center is on the basis of particular tunnel field test, is generated in test device
In checkout area, simulated implementation and the wireless environment of target tunnel true environment equity, and realized in this reciprocity environment to target
Equipment or target scene test job.
Each functions of modules of wireless environment equity realization device is explained as follows：
Test data statistical analysis module is got through the field test to target tunnel, obtains target tunnel physics
Parameter, sectionalization test data and external base station information；
Test data statistical analysis module is first depending on test data and divides nearly base station area, remote base station area and tunnel exit
Area is then segmented and test data is counted, obtains statistical parameter；Wherein, the statistical parameter, which includes at least, each
The parameters such as the channel fading in region, Signal to Interference plus Noise Ratio, the difference component of signal strength；
Test device master base station carries out preliminary wireless environment based on specific statistical parameter, to checkout area and covers；
Particular tunnel wireless environment generation module under the covering generated in test device master base station, relies on test statistics ginseng
Number, addition noise, interference, specific position frequency shift (FS) etc., realizes the preliminary generation of entire wireless environment；
After generation module completes the generation of preliminary environment, the preliminary environmental information of generation is input to wireless environment pair
Output modules are waited, inspection is fitted by the reciprocity output module；Specifically, the Fitness Test can include：It will test
The statistics and analysis result of the parameters such as channel fading in, Signal to Interference plus Noise Ratio, the difference component of signal strength, with authentic testing result
Statistical value degree of being fitted is analyzed, and Fitness Test result is inputted wireless environment peer feedback module.
It should be pointed out that the following formula may be used in the difference component calculating of signal quality：
Δ x (i, j)=x (ai,ti)-x(aj,tj)；
Differential time interval can adjust according to testing requirement, and statistical analysis module will be handled data, statistics
Go out the probability distribution of the basic difference component.
In reciprocity simulation test, mobile subscriber will report the location information and velocity information of itself in real time, wireless equity
Position according to mobile subscriber in checkout area and instantaneous velocity information are carried out reciprocity mapping by feedback module.According to target tunnel
Physical parameter and the physical parameter of test device environment, corresponding different test point, adjust test device master base station pari passu
Transmission power, dynamic power control information is fed back into test device master base station, when degree of fitting reaches threshold value Th, will be exported
Judgement puts 1；Wireless environment equity output module receive output judgement for 1 information after, using the wireless environment being currently generated as
The reciprocity environment output in target tunnel.
We are achieved that the simulation output of particular tunnel wireless environment in this way, can carry out target device or target at this time
The test of scene, test effect are equal to the field test in particular tunnel true environment.
Schematic illustration is carried out to dynamic power control and Fitness Test below.
When carrying out dynamic power control, checkout area environment is most importantly scaled, be allowed to in real scene
Large-scale decline equity, while according to the relationship of signal strength, the difference component of signal strength and speed in test data, surveying
The wireless environment in the entire target tunnel of simulation in the short distance in examination hall.
During simple hypothesis field test, test point movement speed is at the uniform velocity v0, the time interval of test equipment record is t0,
Then per s0=v0t0Distance obtains a sampled point；It is assumed that in tunnel base station location to tunnel exit length be L0, then entire test
Obtain n altogether in the process0=L0/s0A sampled point；According to the division in three kinds of regions in a upper trifle, sampled point is divided in proportion
Cloth is in three regions.
Simultaneously, it is assumed that the total length of test device is L1, then can be by s every in checkout area1=L1/n0Corresponding one of distance is true
Real sampled point, i.e., for arbitrary cs1(c≥1,c∈N*) distance, there is the test value correspondence of real scene；According to real scene
Sampled point and checkout area in test master base station and test point actual range, dynamically adjust test emitter or
The transmission power of tested equipment is controlled, makes the variable quantity of signal strength before and after the signal strength and test point of test point, it is and true
The actual value (or reception value after the large-scale decline of data analysis) of scene sample point is corresponding, can also adjust accordingly accordingly
The movement speed of target device in whole checkout area.
Realization for Fitness Test part, then be need to channel fading trizonal in checkout area, Signal to Interference plus Noise Ratio,
Between the statistical values such as the difference component of received signal strength, with the statistical value of target tunnel field test, the calculating for degree of being fitted is public
Formula is：
The physical significance of degree of fitting formula is the benchmark of the averaged curve for the treatment of matched curve using two as fitting, degree of fitting
Codomain for [0,1], two curves are more similar, and degree of fitting is higher, and identical two curve matching degree are 1.
On the basis of the difference component that received signal strength is extracted in measurement data, to characterize the variation of signal strength and test
The relationship of point movement speed is come to carry out dynamic control to the speed of test point in test device with this, be realized in short measuring distance,
During test point difference movement speed, the simulation of target tunnel radio environment equity and test job.
In this motion, it is proposed that a test device assesses formula based on the degree of fitting newly proposed, carrys out dynamic control test
The transmission power of device, so as to fulfill the signal(l)ing condition undergone in user terminal such as the mesh in the tunnel by a specific characteristic
's.
In the prior art scheme, it to learn performance of the target device under particular tunnel wireless environment, needs mesh
Marking device is carried along into particular tunnel, and in the present solution, using particular tunnel wireless environment simulating test device, it can be in mesh
On the basis of marking tunnel reference measurement, the wireless environment in simulation generation target tunnel eliminates carry target device
Trouble, while may further be used to test other target devices and target scene, accomplished simple and efficiently tested.
Computer Simulation in prior art realizes that the model of wireless environment simulation is relatively simple, particularly with tunnel
This special screne of wireless environment is more the absence of suitable simulation model, and this programme is using existing net test data, based on true
Network environment carries out the equity simulation and generation of checkout area environment, and employs the new variables of key parameter difference component, with this
Based on it is for statistical analysis, the individual difference in distribution of signal spatially can be explicitly described, be different from traditional statistics
Analysis,
It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row
His property includes, so that process, method, article or device including a series of elements not only include those elements, and
And it further includes other elements that are not explicitly listed or further includes intrinsic for this process, method, article or device institute
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including this
Also there are other identical elements in the process of element, method, article or device.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on such understanding, technical scheme of the present invention substantially in other words does the prior art
Going out the part of contribution can be embodied in the form of software product, which is stored in a storage medium
In (such as ROM/RAM, magnetic disc, CD), used including some instructions so that a station terminal equipment (can be mobile phone, computer fills
Put, air conditioner or the network equipment etc.) perform method described in each embodiment of the present invention.
It these are only the preferred embodiment of the present invention, be not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow shift that bright specification and accompanying drawing content are made directly or indirectly is used in other relevant skills
Art field, is included within the scope of the present invention.
Claims (16)
- A kind of 1. environmental simulation method, which is characterized in that the method includes：Get the statistical parameter corresponding to each region in the whole region of Target Wireless environment；Wherein, the target without Include at least two regions in the whole region of thread environment；The statistical parameter is strong including at least there is the signal in each region The difference component of degree；The statistical parameter corresponding to each region based on the Target Wireless environment, generation and the Target Wireless ring Test environment corresponding to border, detection obtain the test parameter in the test environment；Wherein, it is at least wrapped in the test parameter Include the difference component of test signal intensity；The difference component of difference component and signal strength based on the test signal intensity is fitted analysis, based on Fitting Analysis As a result it determines to the adjustment mode of the test environment, with the test environment after being adjusted.
- 2. according to the method described in claim 1, it is characterized in that, the Target Wireless environment is the wireless ring in target tunnel Border；Correspondingly, the method further includes：The target tunnel is divided into three regions；Wherein, three regions are respectively：With the base in the target tunnel Stop spacing from less than the first distance value region, with the target tunnel in base station with a distance from be more than the first distance value region and It is less than the region of third distance value less than the region of second distance value and with the distance between the outlet in the target tunnel.
- 3. according to the method described in claim 1, it is characterized in that, the method further includes：Collect the signal strength corresponding to the sampled point of at least one of each region and sampling time；Between calculating two adjacent sampled points of physical location at least one sampled point one by one, the difference of signal strength, Using obtained result as the difference component of a signal strength of region.
- 4. according to the method described in claim 3, it is characterized in that, described each region based on the Target Wireless environment The corresponding statistical parameter, generation and the test environment corresponding to the Target Wireless environment, including：The object of the statistical parameter, the Target Wireless environment corresponding to each region based on the Target Wireless environment Parameter and the physical parameter of the test environment are managed, determines the transmission power of the master base station in the test environment.
- 5. according to the method described in claim 4, it is characterized in that, each region is further included in the statistical parameter at least In one sampled point, the noise figure and frequency offseting value of each sampled point；Correspondingly, determining the transmission power of the master base station in the test environment, the method further includes：Based on the statistical parameter corresponding to the Target Wireless environment, for each test section in the test environment Noise figure and frequency offseting value are added in domain.
- 6. according to the method described in claim 1, it is characterized in that, the detection obtains the test ginseng in the test environment Number, including：Get location information and movement speed of the test terminal in the test environment；And get the test eventually Hold the signal testing result reported；The location information and movement speed of signal testing result and the test terminal based on the test terminal, really Fixed test environment test parameter corresponding at least one test zone.
- 7. according to the method described in claim 6, it is characterized in that, the difference component and letter based on the test signal intensity The difference component of number intensity is fitted analysis, including：Determine matched at least one sampled point in the test environment and Target Wireless environment；The test ginseng corresponding to each matched sampled point in the test environment and Target Wireless environment is got respectively Number and statistical parameter；Respectively according to matched test parameter and statistical parameter in the test environment and Target Wireless environment, matching is obtained The difference component of the test signal intensity and the difference component of signal strength；The difference component of difference component and signal strength based on the test signal intensity, is calculated match value.
- 8. the method according to the description of claim 7 is characterized in that the result based on Fitting Analysis is determined to the test The adjustment mode of environment, with the test environment after being adjusted, including：Judge the match value corresponding to each test zone in the test environment, if meet default fit threshold；If satisfied, it then determines not to be adjusted the test zone；If not satisfied, then it is directed to the master base station of the test zone The adjustment of transmission power is carried out, with the test environment after being adjusted.
- 9. a kind of environment simulator, which is characterized in that described device includes：Test data statistical analysis module, for getting in the whole region of Target Wireless environment corresponding to each region Statistical parameter；Wherein, include at least two regions in the whole region of the Target Wireless environment；The statistical parameter is at least Include the difference component of the signal strength in each region；Wireless environment peer feedback module, for the statistics corresponding to each region based on the Target Wireless environment Parameter, generation and the test environment corresponding to the Target Wireless environment, detection obtain the test parameter in the test environment； Wherein, the difference component for having test signal intensity is included at least in the test parameter；Parameter regulates and controls module, is fitted point for the difference component based on the test signal intensity and the difference component of signal strength Analysis determines adjustment mode to the test environment based on the result of Fitting Analysis, with the test environment after being adjusted.
- 10. device according to claim 9, which is characterized in that the Target Wireless environment is the wireless ring in target tunnel Border；Correspondingly, test data statistical analysis module, for the target tunnel to be divided into three regions；Wherein, described three Region is respectively：It is less than in the region and the target tunnel of the first distance value with the base station distance in the target tunnel The distance of base station is more than the region of the first distance value and the outlet less than the region of second distance value and with the target tunnel The distance between be less than third distance value region.
- 11. device according to claim 10, which is characterized in that described device further includes：Data acquisition module, for collecting the signal strength corresponding to the sampled point of at least one of each region and adopting The sample time；Correspondingly, test data statistical analysis module, adjacent for calculating physical location at least one sampled point one by one Two sampled points between, the difference of signal strength, using obtained result as the difference component of a signal strength of region.
- 12. according to the devices described in claim 11, which is characterized in that the wireless environment peer feedback module, for being based on The physical parameter of the statistical parameter, the Target Wireless environment corresponding to each region of the Target Wireless environment, And the physical parameter of the test environment, determine the transmission power of the master base station in the test environment.
- 13. according to the devices described in claim 11, which is characterized in that each region is further included in the statistical parameter extremely In a few sampled point, the noise figure and frequency offseting value of each sampled point；Correspondingly, the wireless environment peer feedback module, for the statistics corresponding to based on the Target Wireless environment Parameter for each test zone in the test environment, adds noise figure and frequency offseting value.
- 14. device according to claim 9, which is characterized in that the wireless environment peer feedback module, for getting Test location information and movement speed of the terminal in the test environment；And get the letter that the test terminal reports Number test result；The location information and movement speed of signal testing result and the test terminal based on the test terminal, really Fixed test environment test parameter corresponding at least one test zone.
- 15. device according to claim 14, which is characterized in that the parameter regulates and controls module, for determining the test Matched at least one sampled point in environment and Target Wireless environment；The test ginseng corresponding to each matched sampled point in the test environment and Target Wireless environment is got respectively Number and statistical parameter；Respectively according to matched test parameter and statistical parameter in the test environment and Target Wireless environment, matching is obtained The difference component of the test signal intensity and the difference component of signal strength；The difference component of difference component and signal strength based on the test signal intensity, is calculated match value.
- 16. device according to claim 15, which is characterized in that the parameter regulates and controls module, for judging the test Match value in environment corresponding to each test zone, if meet default fit threshold；If satisfied, it then determines not to be adjusted the test zone；If not satisfied, then it is directed to the master base station of the test zone The adjustment of transmission power is carried out, with the test environment after being adjusted.
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