CN113099473A - Simulation test method of vehicle-mounted short-distance communication network based on real-time traffic road conditions - Google Patents
Simulation test method of vehicle-mounted short-distance communication network based on real-time traffic road conditions Download PDFInfo
- Publication number
- CN113099473A CN113099473A CN202010017664.4A CN202010017664A CN113099473A CN 113099473 A CN113099473 A CN 113099473A CN 202010017664 A CN202010017664 A CN 202010017664A CN 113099473 A CN113099473 A CN 113099473A
- Authority
- CN
- China
- Prior art keywords
- road
- vehicle
- test
- information
- real
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004891 communication Methods 0.000 title claims abstract description 33
- 238000004088 simulation Methods 0.000 title claims abstract description 28
- 238000010998 test method Methods 0.000 title claims abstract description 10
- 238000012360 testing method Methods 0.000 claims abstract description 172
- 230000005540 biological transmission Effects 0.000 claims abstract description 62
- 238000011056 performance test Methods 0.000 claims abstract description 57
- 238000013507 mapping Methods 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 21
- 230000003068 static effect Effects 0.000 claims abstract description 13
- 230000001133 acceleration Effects 0.000 claims description 11
- 238000005562 fading Methods 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 4
- 230000007613 environmental effect Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000012545 processing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/50—Service provisioning or reconfiguring
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Traffic Control Systems (AREA)
Abstract
The invention provides a simulation test method of a vehicle-mounted short-distance communication network based on real-time traffic road conditions, which comprises the following steps: and after the road is restored according to the road static information and the longitude and latitude information, constructing road condition mapping based on the road dynamic information and the road restoration information to obtain a real-time traffic restoration scene. And establishing a plurality of dynamic test areas, wherein each dynamic test area synchronously/asynchronously performs radio wave transmission performance test, data packet collision performance test and application scene test. The method has the advantage that the simulation of the real-time actual road scene corresponding to V2X is realized by converting the real-time traffic information and the road information into the vehicle information of the actual road. The V2X algorithms are tested in real time under the actual road scene, so that simulation and performance test of the actual scene of the actual road in different time periods and different areas are realized, the performance of the algorithms under the actual road is obtained, and an approximately real test environment is provided for the algorithms of the V2X.
Description
Technical Field
The invention relates to the technical field of vehicle-mounted communication networks, in particular to a simulation test method of a vehicle-mounted short-distance communication network based on real-time traffic road conditions.
Background
The Vehicle-mounted short-distance communication (Vehicle to X: V2X) network is the communication among vehicles, roads, workshops, vehicles, people and vehicles realized by short-distance communication technologies such as wireless communication, GPS/GIS, sensing and the like, V2V can greatly improve road safety, and C-V2X (cellular V2X) becomes an important component in the 5G standard. However, many new algorithms and technical solutions need to pass through a large number of tests of actual roads to verify the feasibility of the actual roads, and find problems to improve, which requires a large number of vehicles equipped with V2X vehicle-mounted nodes to test in various actual roads and traffic conditions equipped with road side nodes. Since all vehicles in the whole area are required to be provided with the V2X vehicle-mounted nodes for testing, some tests also require roadside nodes for matching. A large number of vehicles provided with V2X equipment are gathered together to travel to an actual road for testing, so that the cost is huge, the limitation is large, and the test result obtaining period is long.
The test process in the prior art is as follows: setting various scenes, performing performance test on various algorithms in each scene through simulation software, and outputting and analyzing results, thereby obtaining the performance of various algorithms. The limitation of computer software simulation test is that various specific scenes are simulated and then tested, the simulated scenes are greatly different from real traffic road conditions of actual roads in different regions, the simulated test results of the vehicle-mounted short-distance communication network in the simulated scenes are obtained, and the simulated test results of the vehicle-mounted short-distance communication network in the real road scenes cannot be obtained.
Therefore, how to provide a method for testing a vehicle-mounted short-distance communication network in a real and real-time traffic scene becomes an urgent problem to be solved.
Disclosure of Invention
The invention provides a simulation test method and a simulation test device for a vehicle-mounted short-distance communication network based on real-time traffic road conditions, which are used for testing the vehicle-mounted short-distance communication network in a real and real-time traffic scene.
In order to achieve the above object, the technical solution of the present invention provides a method for simulation testing of a vehicle-mounted short-distance communication network based on real-time traffic road conditions, comprising: and acquiring static road information, and restoring the road according to the static road information and the longitude and latitude information to obtain road restoration information. And acquiring dynamic road information, and constructing road condition mapping based on the dynamic road information and the road restoration information to obtain a real-time traffic restoration scene. A plurality of dynamic test areas are set in a real-time traffic reduction scene, and each dynamic test area synchronously or asynchronously performs radio wave transmission performance test, data packet collision performance test and application scene test. And the area of the dynamic test area is not more than twice of the communication range of the vehicle-mounted node.
As a preferred aspect of the foregoing technical solution, preferably, the acquiring static road information, and restoring the road according to the static road information and the longitude and latitude information to obtain the road restoration information includes: and acquiring the road information and the surrounding environment information of the designated area of the public map. And drawing the contents included in the regional road information and the surrounding environment information according to the longitude and latitude information to generate road restoration information. The regional road information comprises the name of a road, the width of the road, the number and the trend of lanes, a traffic intersection and the lane direction at the traffic intersection; the surrounding environment information comprises roadside building height, building types and signal lamps.
As a preferred aspect of the above technical solution, preferably, the acquiring dynamic road information, and constructing a road condition mapping based on the dynamic road information and the road restoration information to obtain a real-time traffic restoration scene includes: and acquiring real-time road traffic conditions at the longitude and latitude positions of the simulation points. And constructing traffic condition mapping based on the system parameters, the number of lanes in the road restoration information, the lane direction at the traffic intersection and the real-time traffic road traffic condition to obtain a real-time traffic restoration scene. Wherein the system parameters include: the number of vehicles in hundred meters, the types of vehicles in urban areas/suburban areas and the density of the vehicles respectively correspond to each traffic road condition.
Preferably, the moving method of the dynamic test area includes: a start point travel mode, a free travel mode are specified.
As a preferable aspect of the above technical solution, preferably, the radio wave transmission performance test includes: and classifying the occlusion type and the environmental reflection type in the transmission scene, and manufacturing a typical environment model according to the classification result. And matching the electric wave transmission environment of the vehicle pairs in the dynamic test area, and matching the corresponding typical environment model according to the matching result. And after the channel model parameters of the models and the factors are combined, calculating path loss, shadow fading, small-scale fading, signal-to-noise ratio estimation coverage, transmission reliability and transmission delay according to electric wave transmission parameters, and outputting a radio wave transmission performance test result. Wherein the number of the typical environment models is equal to the number of the categories in the classification result.
Preferably, the data packet collision performance test includes: and further mapping the mapping relation and the mapping quantity of the vehicle quantity and the vehicle speed information included in the traffic condition mapping to threads with the same quantity. And executing a tested channel distribution scheme, judging whether more than two vehicles exist on the same channel, if so, failing to send the data packet, counting the sending failure times, obtaining the collision rate and reliability of the data packet through calculation, and comprehensively obtaining the collision performance test result of the data packet through the delay generated by collision of the data packet.
Preferably, the application scenario test includes: the method comprises the following steps of testing a straight scene, a steering scene, an intersection auxiliary scene and a lane change scene, wherein the front collision early warning test in the straight scene test comprises the following steps: after setting measurement parameters for vehicles right in front of a target vehicle and in front of two sides of the target vehicle, testing the adjusting capability of V2X on the state of the target vehicle when the different vehicle speeds and driving states of the three front vehicles are changed respectively according to the signal intensity parameter, the transmission reliability and the transmission delay parameter in the radio wave transmission performance test result of the dynamic test area; wherein the measurement parameters include: acceleration, deceleration, lane change, whether a rear vehicle is inserted, target vehicle acceleration, inter-vehicle distance between two vehicles, weather conditions and road conditions;
the emergency brake lamp test in the straight-driving scene test comprises the following steps: and carrying out emergency braking on each vehicle in the dynamic test area, and testing whether the rear vehicle of each vehicle can decelerate in time and brake safely by combining the radio wave transmission performance test result and the data packet collision performance test result.
As a preferable aspect of the foregoing technical solution, preferably, the steering application scenario mainly includes: forbidding to pass through early warning scene, supplementary scene of turning left, the test to forbidding to pass through early warning scene includes: and according to the restored vehicle density and road width in the dynamic test area, according to the test area signal intensity parameter in the radio wave transmission performance test result and the reliability and delay parameter of the data packet in the data packet collision performance test result, testing the reliability and delay parameter sent by the V2X to the target vehicle when the target vehicle overtakes the vehicle in the blind area, recording the time of the driver reacting and calculating the accident probability. The test of the left-turn auxiliary scene comprises the following steps: and according to the restored vehicle density and road width in the dynamic test area, combining the speed of the target vehicle and the vehicle speed of the vehicles around the target vehicle, and further according to the test area signal intensity parameters in the line electric wave transmission performance test result and the reliability and delay parameters of the data packet in the data packet collision performance test result, testing the early warning capability of the target vehicle in a left turning blind area when the target vehicle turns left at a non-line-of-sight distance, including reminding and decelerating the target vehicle.
Preferably, the intersection scene test includes: according to the restored vehicle density, road width and lane trend at the traffic intersection in the dynamic test area, according to the test area signal intensity parameter in the radio wave transmission performance test result and the reliability and delay parameter of the data packet in the data packet collision performance test result, testing whether the V2X can give an early warning to collision or not under the non-line-of-sight condition by combining the speed and acceleration of the target vehicle and the speed and acceleration of the vehicles around the target vehicle, and if the early warning is successful, further testing whether the V2X can brake the target vehicle or not.
As a preferable aspect of the foregoing technical solution, preferably, the lane change application scenario includes: in the blind area reminding/lane changing early warning scene, according to the restored vehicle density and vehicle speed in the dynamic test area, carrying out overtaking operation on each vehicle in the area, according to the test area signal intensity parameter in the radio wave transmission performance test result and the reliability and delay parameter of the data packet in the data packet collision performance test result, testing whether the overtaking of the V2X can be successfully early warned under the condition that each vehicle has a visual blind area in a non-line-of-sight test environment so as to obtain the reliability and timeliness of the V2X transmission data packet
The technical scheme of the invention provides a simulation test method of a vehicle-mounted short-distance communication network based on real-time traffic road conditions, which comprises the following steps: and restoring the road according to the road static information and the longitude and latitude information to obtain road restoration information. And constructing road condition mapping based on the road dynamic information and the road restoration information to obtain a real-time traffic restoration scene. In the scene, a plurality of dynamic test areas are set, and each dynamic test area synchronously or asynchronously performs radio wave transmission performance test, data packet collision performance test and application scene test. And the area of the dynamic test area is not more than twice of the communication range of the vehicle-mounted node.
The method has the advantage that the simulation of the real-time actual road scene corresponding to the V2X is realized by converting the real-time traffic information and the road information into the vehicle information of the actual road. The V2X algorithms are tested in real time under the actual road scene, so that simulation and performance test of the actual scene of the actual road in different time periods and different areas are realized, the performance of the algorithms under the actual road is obtained, and an approximately real test environment is provided for the algorithms of the V2X.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the technical solutions in the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of an implementation framework of the technical solution provided by the present invention.
Fig. 2 is a schematic flow chart provided in the embodiment of the present invention.
Fig. 3 is a second flowchart of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Now, the architecture of the present invention is explained primarily, as shown in fig. 1, fig. 1 is a schematic diagram of an implementation framework of the technical solution provided by the present invention.
First, road and surrounding information is captured. And then, carrying out data processing on the captured information to realize real-time traffic road condition acquisition and scene restoration, and finally mapping the simulation scene and carrying out performance test on the V2X network.
Now further explaining the technical solution of the present invention, fig. 2 is a schematic flow chart provided in the embodiment of the present invention, and as shown in fig. 2, the method includes:
step 201, collecting static road information, and restoring the road according to the static road information and the longitude and latitude information to obtain road restoration information.
And collecting road information and surrounding environment information of the designated area in the public map. The contents (data) included in the regional road information and the surrounding environment information are arranged according to the longitude and latitude to generate road restoration information. The regional road information includes, but is not limited to, the name of a road, the width of the road, the number and the trend of lanes, a traffic intersection and the lane direction at the traffic intersection; the surrounding environment information comprises roadside building height, building types and signal lamps.
Step 202, collecting road dynamic information, and constructing road condition mapping based on the road dynamic information and the road restoration information to obtain a real-time traffic restoration scene.
The method comprises the step of obtaining real-time road traffic conditions at the longitude and latitude positions of a simulation point. And constructing mapping according to the system parameters and the road restoration information to obtain a real-time traffic restoration scene. Specifically, after the number of lanes and the lane direction at the traffic intersection in the road restoration information are combined with the system parameters, the system parameters are combined with the real-time traffic road traffic condition in step 201, so that traffic condition mapping is constructed, and finally a real-time traffic restoration scene is obtained. Among these, system parameters include, but are not limited to: the number of vehicles in hundred meters, the types of vehicles in urban areas/suburban areas and the density of the vehicles respectively correspond to each traffic road condition.
Step 203, setting a plurality of dynamic test areas in the real-time traffic reduction scene, and testing the radio wave transmission performance and the data packet collision performance.
The radio wave transmission performance test and the data packet collision performance test between the dynamic test areas can be carried out simultaneously or separately.
A radio wave transmission performance test comprising: and classifying the occlusion types and the environmental reflection types in the transmission scene, and manufacturing a corresponding typical environmental model according to the classified number of the types. And matching the electric wave transmission environment of every two vehicles in the dynamic test area, and matching the vehicles with corresponding typical environment models according to matching results. And after the channel model parameters of the models and the factors are combined, calculating path loss, shadow fading, small-scale fading, signal-to-noise ratio estimation coverage, transmission reliability and transmission delay according to electric wave transmission parameters, and outputting a radio wave transmission performance test result.
The data packet collision performance test comprises the following steps: and mapping the mapping relation and the mapping quantity of the vehicle quantity and the vehicle speed information included in the traffic condition mapping to the threads with the same quantity. And executing a tested channel distribution scheme, judging whether more than two vehicles exist on the same channel, if so, failing to send the data packet, counting the sending failure times, obtaining the collision rate and reliability of the data packet through calculation, and comprehensively obtaining the collision performance test result of the data packet through the delay generated by collision of the data packet.
And step 204, combining the test results to test in a restored application scene.
The application scenario test comprises the following steps: the method comprises the following steps of straight-going scene testing, turning scene testing, intersection auxiliary scene testing and lane-changing scene testing.
And the area of the dynamic test area is not more than twice of the communication range of the vehicle-mounted node. The moving mode of the dynamic test area comprises the following steps: a start point travel mode, a free travel mode are specified.
The invention is described in further detail below with reference to the following figures and examples, as shown in fig. 3:
and step 301, acquiring and restoring road and surrounding information.
Specifically, the road information may be acquired in two ways: 1. the method comprises the steps of obtaining road and surrounding environment information of a designated area of a public map through a web crawler program, wherein the information comprises the name of the road, the number of road lanes, the trend of road traffic intersections and the lanes, and the size and height information of buildings along the road. 2. Road information is directly acquired through a road map, such as opentreeetmap, and then building information around the road is acquired through a public map, such as poi (point of interest).
In actual practice, one of the two modes can be selected, and the two modes can also be combined.
After the road information is obtained, the road and building data contained in the road and building information are arranged and stored according to the longitude and latitude sequence, and the road and surrounding building graphs are dynamically drawn according to the road information according to the test requirements, so that the road and surrounding building information is restored.
And step 302, acquiring real-time traffic road conditions.
Specifically, the road information may be acquired in two ways: 1. and acquiring the real-time road traffic condition of the current point through an API (application program interface) provided by the electronic map according to the longitude and latitude of the simulation point. 2. And obtaining the traffic condition of the current point by the map crawler, and marking different colors as different road congestion conditions by using the traffic condition of the current point represented by the color depth. In actual practice, one of the two modes can be selected, and the two modes can also be combined.
And step 303, restoring the real-time traffic scene.
According to the acquired real-time road traffic conditions, based on the parameters set by the system (at least including the number of vehicles in hectometer corresponding to different traffic conditions and the vehicle type distribution corresponding to urban/suburban areas), the different road traffic conditions are mapped into different scenes of different numbers, speeds and vehicle types of actual traffic conditions by combining the restored road information (the number of lanes and the direction of lanes at the traffic intersection) acquired in step 301, and scene restoration of the real-time road traffic conditions is completed.
And step 304, setting a dynamic test area.
And selecting a dynamic test area, wherein the size of the area is larger than the communication range D of the vehicle-mounted node and smaller than 2D, the area runs along the road by using the road and the surrounding information data collected by the first part, and fills the vehicle information corresponding to the test range into the dynamic test area by using the real-time traffic road condition of the current point acquired in the step 302 and performing scene restoration. The moving mode of the dynamic test area comprises the following steps: a start point travel mode, a free travel mode are specified. Specifying a start point travel pattern: the dynamic test area is navigated from the start point to the end point. Free-running mode: and randomly selecting a road in front after the dynamic test area reaches the intersection. The embodiment can generate a plurality of dynamic test areas to be tested simultaneously.
The V2X test is mainly divided into: the method comprises the following steps of testing radio wave transmission performance, testing data packet collision performance and testing the performance of main application scenes (straight running, steering, intersection and lane changing), wherein the testing method comprises the following steps:
and 305, simulating scene mapping and performance testing and obtaining a test result.
And step 3051, carrying out a radio wave transmission performance test.
Specifically, the purpose of the radio wave transmission test is to test the coverage, reliability and delay of V2X signal transmission under various road conditions and surrounding environments.
Firstly, classifying common transmission scenes, and making a typical environment model, wherein the shielding type is as follows: line of sight (LOS) scene transmission, metal car body shielding, non line of sight (NLOS) shielding for short and short buildings, and shielding for tall and large buildings. The reflection type is: ground reflection, building single-path reflection, multi-path reflection.
And matching the electric wave transmission environments of the vehicles in the area pairwise according to the density of the vehicles restored in the dynamic test area and the environment around the road, and obtaining a matched typical environment model after matching. And combining channel model parameters of multiple matched model factors for a matched typical environment model, respectively calculating path loss, shadow fading and small-scale fading according to the distance, the working frequency, different antenna installation positions and antenna types of the vehicle-mounted node, and simultaneously calculating dynamic time delay and a Doppler spectrum type. And estimating the coverage, transmission reliability and time delay according to the signal-to-noise ratio obtained by calculation, and storing the related data.
And step 3052, testing the collision performance of the data packet.
The embodiment is explained by adopting a multithread processing mode, specifically, each thread runs the same idle channel detection and occupation strategy to simulate the performance of data packet collision, reliability and delay caused by different schemes under different vehicle densities under actual road scenes.
Mapping the number of vehicles and the vehicle speed in the dynamic test area restored in the step 302 to threads with the same number, then taking the electric wave transmission parameters obtained in the step 3051 as performance parameters of pairwise transmission of the vehicles in the area, and executing a tested channel allocation scheme: if more than two vehicles occupy the same channel, the vehicles are considered to be collided, and the transmission fails. And counting failed transmission, calculating the collision rate and reliability of the data packet, and further calculating the time delay of the data packet due to collision.
In the V2X channel allocation strategies according to different schemes, the channel utilization rate and the packet collision performance are different when the number of vehicles per unit density is the same.
And step 306, performing the performance test of the main application scene according to the simulation scene mapping and the test result of the performance test.
The main application scenarios include: front Collision Warning (FCW), emergency brake lights (EEBL) in a straight-ahead application scenario; forbidden pass early warning (DNPW) and Left Turn Assist (LTA) in a steering application scene; intersection assistance (IMA) for an intersection assistance application scenario; blind zone reminding/lane change warning (BSW + LCW) in a lane change application scenario.
For the test of V2I (vehicle-roadside node), roadside nodes can be set at traffic intersections in a map, or roadside nodes can be set in hot spot areas, and the structure of the roadside nodes is the same as that of vehicle-mounted nodes, but the antenna deployment position is high, the coverage area is large, so parameters can be properly adjusted, and similar tests can be performed.
And the results are continuously stored in a database along with the movement of the dynamic test area, and after the test is finished, the test data stored in the process is subjected to statistical analysis, and a test report is output.
The technical scheme of the invention provides a simulation test method of a vehicle-mounted short-distance communication network based on real-time traffic road conditions, which comprises the following steps: and restoring the road according to the road static information and the longitude and latitude information to obtain road restoration information. And constructing road condition mapping based on the road dynamic information and the road restoration information to obtain a real-time traffic restoration scene. In the scene, a plurality of dynamic test areas are set, and each dynamic test area synchronously or asynchronously performs radio wave transmission performance test, data packet collision performance test and application scene test. And the area of the dynamic test area is not more than twice of the communication range of the vehicle-mounted node.
The method has the advantage that the simulation of the real-time actual road scene corresponding to the V2X is realized by converting the real-time traffic information and the road information into the vehicle information of the actual road. The V2X algorithms are tested in real time under the actual road scene, so that simulation and performance test of the actual scene of the actual road in different time periods and different areas are realized, the performance of the algorithms under the actual road is obtained, and an approximately real test environment is provided for the algorithms of the V2X.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A simulation test method of a vehicle-mounted short-distance communication network based on real-time traffic road conditions is characterized by comprising the following steps:
acquiring static road information, and restoring a road according to the static road information and the longitude and latitude information to obtain road restoration information;
acquiring road dynamic information, and constructing road condition mapping based on the road dynamic information and the road restoration information to obtain a real-time traffic restoration scene;
setting a plurality of dynamic test areas in a real-time traffic reduction scene, and synchronously or asynchronously carrying out radio wave transmission performance test, data packet collision performance test and application scene test in each dynamic test area;
and the area of the dynamic test area is not more than twice of the communication range of the vehicle-mounted node.
2. The simulation test method for the vehicle-mounted short-distance communication network based on the real-time traffic road condition as claimed in claim 1, wherein the acquiring the static information of the road, and restoring the road according to the static information of the road and the longitude and latitude information to obtain the road restoration information comprises:
collecting road information and surrounding environment information of a designated area of a public map;
drawing the contents included in the regional road information and the surrounding environment information according to the longitude and latitude information to generate road restoration information;
the regional road information comprises the name of a road, the width of the road, the number and the trend of lanes, a traffic intersection and the lane direction at the traffic intersection; the surrounding environment information comprises roadside building height, building types and signal lamps.
3. The method for simulating and testing the vehicle-mounted short-distance communication network based on the real-time traffic road condition as claimed in claim 1, wherein the step of acquiring the dynamic road information, and constructing the road condition mapping based on the dynamic road information and the road restoration information to obtain the real-time traffic restoration scene comprises the steps of:
acquiring real-time road traffic conditions at the longitude and latitude positions of the simulation points;
constructing traffic condition mapping based on system parameters, the number of lanes in the road restoration information, the lane direction at a traffic intersection and the real-time traffic road traffic condition to obtain the real-time traffic restoration scene;
wherein the system parameters include: the number of vehicles in hundred meters, the types of vehicles in urban areas/suburban areas and the density of the vehicles respectively correspond to each traffic road condition.
4. The simulation test method for vehicle-mounted short-distance communication network based on real-time traffic road conditions as claimed in claims 2 and 3, wherein the moving mode of the dynamic test area comprises: a start point travel mode, a free travel mode are specified.
5. The method for simulating and testing the vehicular short-distance communication network according to the real-time traffic road condition of claim 4, wherein the radio wave transmission performance test comprises:
classifying the shielding type and the environmental reflection type in the transmission scene, and manufacturing a typical environment model according to the classification result;
matching electric wave transmission environments of the vehicles in the dynamic test area in pairs, and matching corresponding typical environment models according to matching results;
after the channel model parameters of the models and the factors are combined, calculating path loss, shadow fading, small-scale fading, signal-to-noise ratio estimation coverage, transmission reliability and transmission delay according to electric wave transmission parameters, and outputting a radio wave transmission performance test result;
wherein the number of the typical environment models is equal to the number of the categories in the classification result.
6. The method for simulating and testing the vehicle-mounted short-distance communication network based on the real-time traffic road condition as claimed in claim 5, wherein the data packet collision performance test comprises:
further mapping the mapping relation and the mapping quantity of the vehicle quantity and the vehicle speed information included in the traffic condition mapping to threads with the same quantity;
and executing a tested channel distribution scheme, judging whether more than two vehicles exist on the same channel, if so, failing to send the data packet, counting the sending failure times, obtaining the collision rate and reliability of the data packet through calculation, and comprehensively obtaining the collision performance test result of the data packet through the delay generated by collision of the data packet.
7. The method for simulation testing of a vehicle-mounted short-distance communication network based on real-time traffic road conditions as claimed in claim 6, wherein the application scenario testing comprises: a straight-ahead scene test, a steering scene test, an intersection auxiliary scene test, a lane-changing scene test,
the front collision early warning test in the straight-going scene test comprises the following steps: after setting measurement parameters for vehicles right in front of a target vehicle and in front of two sides of the target vehicle, testing the adjusting capability of V2X on the state of the target vehicle when the different vehicle speeds and driving states of the three front vehicles are changed respectively according to the signal intensity parameter, the transmission reliability and the transmission delay parameter in the radio wave transmission performance test result of the dynamic test area; wherein the measurement parameters include: acceleration, deceleration, lane change, whether a rear vehicle is inserted, target vehicle acceleration, inter-vehicle distance between two vehicles, weather conditions and road conditions;
the emergency brake lamp test in the straight-driving scene test comprises the following steps: and carrying out emergency braking on each vehicle in the dynamic test area, and testing whether the rear vehicle of each vehicle can decelerate in time and brake safely by combining the radio wave transmission performance test result and the data packet collision performance test result.
8. The method for simulation testing of a vehicle-mounted short-distance communication network based on real-time traffic road conditions as claimed in claim 7, wherein the steering application scenario mainly comprises: forbidding to pass through the early warning scene and the left-turning auxiliary scene,
the testing of the forbidden early warning scene comprises the following steps: according to the restored vehicle density and road width in the dynamic test area, according to the test area signal intensity parameters in the radio wave transmission performance test result and the reliability and delay parameters of the data packet in the data packet collision performance test result, testing the reliability and delay parameters sent by the V2X to the target vehicle when the target vehicle overtakes the vehicle in the blind area, recording the time of the driver reacting and calculating the accident probability;
the testing of the left turn assist scenario includes: and according to the restored vehicle density and road width in the dynamic test area, in combination with the speed of a target vehicle and the speed of vehicles around the target vehicle, further according to the test area signal intensity parameter in the test result of the radio wave transmission performance and the reliability and delay parameter of the data packet in the test result of the collision performance of the data packet, testing the early warning capability of the target vehicle in a left turning blind area when the target vehicle turns left under non-line-of-sight, including reminding and decelerating the target vehicle.
9. The method for the simulation test of the vehicle-mounted short-distance communication network based on the real-time traffic road condition as claimed in claim 8, wherein the intersection scene test comprises: and testing whether the V2X can give an early warning to collision or not under the non-line-of-sight distance by combining the speed and the acceleration of the target vehicle and the speed and the acceleration of the vehicles around the target vehicle according to the restored vehicle density, the road width and the lane trend at the traffic intersection in the dynamic test area and according to the test area signal intensity parameter in the radio wave transmission performance test result and the reliability and the delay parameter of the data packet in the data packet collision performance test result, and further testing whether the V2X can brake the target vehicle if the early warning is successful.
10. The method for simulation testing of a vehicle-mounted short-distance communication network based on real-time traffic road conditions as claimed in claim 8, wherein the lane change application scenario comprises: and in the blind area reminding/lane changing early warning scene, according to the restored vehicle density and vehicle speed in the dynamic test area, carrying out overtaking operation on each vehicle in the area, and according to the test area signal intensity parameter in the radio wave transmission performance test result and the reliability and delay parameter of the data packet in the data packet collision performance test result, testing whether the overtaking of the vehicle can be successfully carried out under the condition that each vehicle has a visual blind area in a non-line-of-sight test environment by using V2X so as to obtain the reliability and timeliness of the V2X transmission data packet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010017664.4A CN113099473B (en) | 2020-01-08 | Simulation test method of vehicle-mounted short-distance communication network based on real-time traffic road conditions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010017664.4A CN113099473B (en) | 2020-01-08 | Simulation test method of vehicle-mounted short-distance communication network based on real-time traffic road conditions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113099473A true CN113099473A (en) | 2021-07-09 |
| CN113099473B CN113099473B (en) | 2024-05-03 |
Family
ID=
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113420511A (en) * | 2021-07-21 | 2021-09-21 | 无锡物联网创新中心有限公司 | Vehicle-mounted communication delay modeling method |
| CN113949996A (en) * | 2021-10-11 | 2022-01-18 | 重庆大学 | Data processing method and system for acquisition and playback of vehicle-road cooperative test scene |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170117270A (en) * | 2016-04-12 | 2017-10-23 | 자동차부품연구원 | Driving integrated simulation apparatus based on v2x communication |
| CN108763733A (en) * | 2018-05-24 | 2018-11-06 | 北京汽车集团有限公司 | driving simulation test method, device and system |
| CN109362096A (en) * | 2018-12-12 | 2019-02-19 | 安徽江淮汽车集团股份有限公司 | A kind of driver test system and method for V2X road test |
| CN110224888A (en) * | 2019-06-10 | 2019-09-10 | 公安部交通管理科学研究所 | A kind of test method of vehicle-mounted V2X communication equipment, apparatus and system |
| US20190288781A1 (en) * | 2018-03-13 | 2019-09-19 | Chang'an University | Lte-v based internet of vehicles communication test system and test method thereof |
| CN110263381A (en) * | 2019-05-27 | 2019-09-20 | 南京航空航天大学 | A kind of automatic driving vehicle test emulation scene generating method |
| CN110570660A (en) * | 2019-11-06 | 2019-12-13 | 深圳市城市交通规划设计研究中心有限公司 | real-time online traffic simulation system and method |
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170117270A (en) * | 2016-04-12 | 2017-10-23 | 자동차부품연구원 | Driving integrated simulation apparatus based on v2x communication |
| US20190288781A1 (en) * | 2018-03-13 | 2019-09-19 | Chang'an University | Lte-v based internet of vehicles communication test system and test method thereof |
| CN108763733A (en) * | 2018-05-24 | 2018-11-06 | 北京汽车集团有限公司 | driving simulation test method, device and system |
| CN109362096A (en) * | 2018-12-12 | 2019-02-19 | 安徽江淮汽车集团股份有限公司 | A kind of driver test system and method for V2X road test |
| CN110263381A (en) * | 2019-05-27 | 2019-09-20 | 南京航空航天大学 | A kind of automatic driving vehicle test emulation scene generating method |
| CN110224888A (en) * | 2019-06-10 | 2019-09-10 | 公安部交通管理科学研究所 | A kind of test method of vehicle-mounted V2X communication equipment, apparatus and system |
| CN110570660A (en) * | 2019-11-06 | 2019-12-13 | 深圳市城市交通规划设计研究中心有限公司 | real-time online traffic simulation system and method |
Non-Patent Citations (1)
| Title |
|---|
| 陈渠等: ""基于实时路况信息的插电式混合动力汽车预测性能量管理算法研究"", 《汽车技术》, 30 October 2019 (2019-10-30) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113420511A (en) * | 2021-07-21 | 2021-09-21 | 无锡物联网创新中心有限公司 | Vehicle-mounted communication delay modeling method |
| CN113949996A (en) * | 2021-10-11 | 2022-01-18 | 重庆大学 | Data processing method and system for acquisition and playback of vehicle-road cooperative test scene |
| CN113949996B (en) * | 2021-10-11 | 2022-10-28 | 重庆大学 | Data processing method and system for acquisition and playback of vehicle-road cooperative test scene |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108769949B (en) | Road testing method of V2X equipment | |
| CN112789619B (en) | Simulation scene construction method, simulation method and device | |
| CN108734979A (en) | Traffic lights detecting system and method | |
| CN111797475A (en) | V2X test method and system | |
| WO2018233175A1 (en) | Danger early-warning method and system, v2x vehicle-mounted terminal and memory | |
| Zhang et al. | Virtual traffic lights: System design and implementation | |
| CN105702152A (en) | Map generation method and device | |
| CN105679091A (en) | Visualized early warning method against collision based on Internet of Vehicles | |
| JP2001523871A (en) | Method and apparatus for signaling a local traffic obstruction | |
| CN111596644B (en) | Vehicle-mounted evaluation system and method based on comprehensive tester for vehicle-road cooperative application | |
| Ammoun et al. | Design and efficiency measurement of cooperative driver assistance system based on wireless communication devices | |
| CN111477030B (en) | Vehicle collaborative risk avoiding method, vehicle end platform, cloud end platform and storage medium | |
| CN113206874A (en) | Vehicle-road cooperative processing method and device, electronic equipment and storage medium | |
| CN111625939B (en) | Vehicle-road cooperative application scale evaluation system and method | |
| CN110296708A (en) | Lines of operation planing method, device and storage medium | |
| CN111417093B (en) | Vehicle-based standard performance test method and device for V2X efficiency class application | |
| Yang et al. | Research on forward collision warning system based on connected vehicle V2V communication | |
| CN111739293A (en) | Data fusion method and device | |
| Ferreira et al. | Vehicular sensing: Emergence of a massive urban scanner | |
| Dokur et al. | Three connected v2v applications based on dsrc basic safety messages | |
| CN103903432A (en) | Equipment for determining road link congestion state and method | |
| Kim | Assessment of vehicle-to-vehicle communication based applications in an urban network | |
| CN111405529B (en) | Test system and method for V2X efficiency application | |
| Montero et al. | Case study on cooperative car data for estimating traffic states in an urban network | |
| CN113099473B (en) | Simulation test method of vehicle-mounted short-distance communication network based on real-time traffic road conditions |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 322000 1st floor, 128 Gaotang Road, Suxi Town, Yiwu City, Jinhua City, Zhejiang Province Applicant after: Datang Gaohong information communication (Yiwu) Co.,Ltd. Address before: 322009 No.128, Gaotang Road, Suxi Town, Yiwu City, Jinhua City, Zhejiang Province Applicant before: DATANG GOHIGH INFORMATION AND COMMUNICATION RESEARCH INSTITUTE (YIWU) CO.,LTD. |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211223 Address after: 401331 10-04 10-5-01 10-5-02 10-06, No. 35, Jinghe Road, Huxi street, high tech Zone, Shapingba District, Chongqing Applicant after: Datang Gaohong Zhilian Technology (Chongqing) Co.,Ltd. Address before: 322000 1st floor, 128 Gaotang Road, Suxi Town, Yiwu City, Jinhua City, Zhejiang Province Applicant before: Datang Gaohong information communication (Yiwu) Co.,Ltd. |
|
| GR01 | Patent grant |