CN105007590A - Car networking vehicular access WiFi wireless network performance test device and test method thereof - Google Patents
Car networking vehicular access WiFi wireless network performance test device and test method thereof Download PDFInfo
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Abstract
The present invention discloses a car networking vehicular access WiFi wireless network performance test device and a test method thereof. The method of the present invention comprises the steps of obtaining the driving-in time and the driving-out time of a tested car networking vehicle-mounted WiFi network device passing a test area, and triggering and ending the performance test process to a tested wireless network; carrying out the wireless network performance test, obtaining a performance parameter of the tested wireless network and obtaining the average stroke speed of a tested wireless network device; assessing the performance level of a tested car networking vehicular access WiFi wireless network device according to a tested car networking vehicular access WiFi wireless network performance parameter. According to the present invention, by detecting the driving-in time and the driving-out time of the tested car networking vehicle-mounted WiFi wireless network device passing the test area, the starting and ending of a test process are controlled, thereby avoiding sending the performance test data packets blindly, and improving the accuracy of the tested car networking vehicular access WiFi wireless network performance test.
Description
Technical field
The invention belongs to network communication technology field, relate to car networking, especially a kind of car networking bus or train route WiFi wireless network performance testing equipment and method of testing thereof.
Background technology
In car networked environment, in order to realize the perception of traffic environment information intelligent, needing Real-time Collection Floating Car service data and carrying out background analysis process, therefore, bus or train route Radio Network System becomes the key components forming car networking.WiFi (Wireless Fidelity), it is the trade mark of manufacturer of WiFi alliance, can as the brand quality certification of product, being WLAN (WLAN) equipment building on IEEE 802.11 standard, is a kind of short range wireless transmission technology that application is the most general at present.Compared with conventional wireless network, vehicle-mounted WiFi Wireless Communication Equipment in car networking bus or train route Radio Network System is often in fast moving state, its mobility shows as that network topology change is fast, node motion speed is fast and motion track is measurable, and its network transmission performance can be subject to the impact of the problem such as multipath fading, Doppler effect.The existing test mode for WiFi networks mainly comprises employing network media management or wireless network experimental bed at present, wherein, existing network media management does many simplification and hypothesis to the parameters such as network channel, topology and flow or model usually, is difficult to real embodiment wireless network genuine property and situation; Existing wireless network experimental bed can only carry out performance test to the node to be measured that static state is disposed, when the networking vehicle mounted WiFi Wireless Communication Equipment of car is relative to network performance measurement module fast moving, existing wireless network experimental bed can not accurately determine testing time window, cause blindly sending performance test packet, thus cause between test result and actual system behavior and there is very large deviation.Therefore, existing wireless network experimental bed cannot carry out Validity Test for the car networking bus or train route WiFi Radio Network System comprising fast moving node to be measured.
Summary of the invention
The object of the invention is to the shortcoming overcoming above-mentioned prior art, provide a kind of car to network bus or train route WiFi wireless network performance testing equipment and method of testing thereof, it can carry out performance test accurately to car bus or train route WiFi wireless network of networking.
The object of the invention is to be achieved through the following technical solutions:
First the present invention proposes a kind of car networking bus or train route WiFi wireless network performance testing equipment, and it comprises test starting detecting module, test terminates detecting module, performance measuring modules, testing control module, described test starting detecting module sails the time for obtaining the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle into by test zone, and by networking vehicle mounted for tested vechicle WiFi Wireless Communication Equipment by time of sailing into of test zone by cable-network transmission to testing control module, described test terminates detecting module and rolls the time for obtaining the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle away from by test zone, and by networking vehicle mounted for tested vechicle WiFi Wireless Communication Equipment by time of rolling away from of test zone by cable-network transmission to testing control module, described performance measuring modules, for carrying out the performance measurement to tested vechicle networking bus or train route WiFi wireless network, obtains tested vechicle networking bus or train route WiFi wireless network performance parameter, by obtain data by cable-network transmission to testing control module, described testing control module, the time is sailed into by test zone for the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle sent by cable network according to test starting detecting module, trigger the performance test to tested vechicle networking bus or train route WiFi wireless network, and terminate according to test the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle that detecting module sent by cable network and roll the time away from by test zone, stop the performance test to bus or train route WiFi wireless network of being networked by tested vechicle, and according to tested vechicle networking vehicle mounted WiFi Wireless Communication Equipment by time of sailing into of test zone with roll the average travel speed of the networking vehicle mounted WiFi Wireless Communication Equipment of Time Calculation tested vechicle by test zone away from, and according to the tested vechicle networking bus or train route WiFi wireless network performance calculation of parameter tested vechicle networking bus or train route WiFi Wireless Communication Equipment comprehensive performance parameter obtained.
Based on bus or train route WiFi wireless network performance testing equipment of networking to get on the bus, the present invention also proposes a kind of method of testing, specifically comprises the following steps:
Step S110: record tested static essential information, and start testing vehicle and pass through test zone; Described tested static essential information comprises: the networking vehicle mounted WiFi Wireless Communication Equipment numbering of test I C card card number, tested vechicle;
Step S120: test starting detecting module obtains tested vechicle networking vehicle mounted WiFi Wireless Communication Equipment and sails the time into by test zone, and sail the performance test of time triggered to tested vechicle networking bus or train route WiFi wireless network according to the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle into by test zone;
Step S130: carry out the performance test to tested vechicle networking bus or train route WiFi wireless network, obtains tested vechicle networking bus or train route WiFi wireless network performance parameter;
Step S140: obtain tested vechicle networking vehicle mounted WiFi Wireless Communication Equipment and roll the time away from by test zone, and according to the performance test that the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle stops tested vechicle networking bus or train route WiFi wireless network by the time of rolling away from of test zone;
Step S150: obtain the average travel speed of the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle by test zone; And according to tested vechicle networking bus or train route WiFi wireless network performance calculation of parameter tested vechicle networking bus or train route WiFi Wireless Communication Equipment comprehensive performance parameter.
Further, above-mentioned steps S130 specifically comprises the following steps:
S131) performance measuring modules is that the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle distributes 16bit short address;
S132) performance measuring modules to the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle with 2 seconds for loop cycle send probe data packet; Probe data packet comprises short bag and long bag, and short packet length is 64 bytes, and long packet length is 1065 bytes, and the information specifically comprised in probe data packet has: probe data packet sequence number, destination node address and probe data packet transmitting time T1; Accordingly, performance measuring modules receives the response data packet that the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle returns; Short bag, the concrete response data packet length of long bag is respectively 64 bytes and 1065 bytes, and the information specifically comprised in response data packet has: the probe data packet sequence number received, source node address, probe data packet transmitting time T1, probe data packet time of reception T2 and response data packet send time T3;
S133) monitor each probe data packet and response data package informatin, according to probe data packet sequence number, record performance measurement module receives the time of reception T4 of response data packet;
S134) according to each probe data packet sequence number, utilize formula (1) to calculate and record time lag of first order test sample book value:
Time lag of first order test sample book value=(T2-T1)+(T4-T3) (1)
Within 2 seconds test period, according to described probe data packet sequence number, when not receiving described response data packet, be then judged to be generation packet loss; Record the described packet loss event in described test process.
Further, above-mentioned steps S150 specifically comprises the following steps:
S151) test zone that testing control module is sailed in time and EOT end of test instruction according to the test zone in the test initiation command received rolls the time away from, calculate testing time window value, be specially test zone and roll time subtract test region away from and sail the time into; Calculate the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle by the average travel speed of test zone, be specially test segment length divided by testing time window value;
S152) calculate tested vechicle networking bus or train route WiFi wireless network average latency according to the described delay sample value recorded in test process, its unit is second, formula specific as follows:
In formula (2), all delay sample value sums refer to adding of each delayed test sample value and, delay sample value sum refers to the number of times sum of delay sample value, also the number of i.e. probe data packet;
According to the described packet loss event recorded in test process, obtain test period packet loss number, then according to calculating tested vechicle networking bus or train route WiFi wireless network frame loss rate with following formula (3):
S153) according to above-mentioned tested vechicle networking bus or train route WiFi wireless network average latency, calculate tested vechicle networking bus or train route WiFi wireless network average throughput, its unit is bytes-per-second, formula specific as follows:
Further, in above-mentioned steps S150, at S153) after, according to described network average throughput, calculate tested vechicle networking vehicle mounted WiFi Wireless Communication Equipment comprehensive performance parameter:
The present invention has following beneficial effect:
By car networking bus or train route WiFi wireless network performance testing equipment of the present invention and method of testing thereof, when the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle is by test zone, can detect that the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle is by time of sailing into of test zone with roll the time away from, tested vechicle networking bus or train route WiFi wireless network performance parameter can be detected during the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle is by test zone, and the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle is by the average travel speed of test zone, tested vechicle networking bus or train route WiFi wireless network performance is analyzed, and avoid blindly sending performance test packet, analyze the accuracy judged higher, do not rely on the actual translational speed of tested vechicle networking vehicle mounted WiFi Wireless Communication Equipment, can carry out testing and obtaining test data when the networking vehicle mounted WiFi Wireless Communication Equipment translational speed the unknown of tested vechicle.
Accompanying drawing explanation
Fig. 1 is the flow chart of the car networking bus or train route WiFi wireless network performance method of testing of the embodiment of the present invention one;
Fig. 2 is the performance test carried out in car of the present invention networking bus or train route WiFi wireless network performance method of testing tested vechicle networking bus or train route WiFi wireless network, and obtains the flow chart of tested vechicle networking bus or train route WiFi wireless network performance parameter step;
Fig. 3 obtains the average travel speed of the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle by test zone in car of the present invention networking bus or train route WiFi wireless network performance method of testing, and calculates the flow chart of tested vechicle networking bus or train route WiFi Wireless Communication Equipment comprehensive performance parameter step;
Fig. 4 is the structural representation of the car networking bus or train route WiFi wireless network performance testing equipment of embodiments of the invention 2;
Fig. 5 is the structural representation of test starting detecting module;
Fig. 6 is the structural representation of testing control module;
Fig. 7 is the structural representation of performance measuring modules;
Fig. 8 is the structural representation that test terminates detecting module.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment and accompanying drawing, the embodiment of the present invention is described in further details.Following examples and illustrate for explaining the present invention, but not as but restriction of the present invention.
Embodiment 1
Fig. 1 is the flow chart according to car networking bus or train route WiFi wireless network performance method of testing of the present invention, and with reference to Fig. 1, the car networking bus or train route WiFi wireless network performance method of testing of the present embodiment specifically comprises the steps:
Step S110: record tested static essential information, and start testing vehicle and pass through test zone;
In the present embodiment, this step is performed by manual type, test I C card and the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle is jointly placed in testing vehicle; By manual type input test essential information in a test device; Test essential information comprises: the networking vehicle mounted WiFi Wireless Communication Equipment numbering of test I C card card number, tested vechicle; Start testing vehicle by manual type and pass through test zone; Test zone is 200 meters of craspedodrome sections; Test starting detecting module in the present invention is hardware device, is placed on test segment upstream entrance position; Performance measuring modules in the present invention is hardware device, is placed on trackside position in the middle of test segment; Middle testing control module of the present invention is software module, is deployed in industrial computer, is connected by serial ports with performance measuring modules, and is placed on trackside position in the middle of test segment; It is hardware device that test in the present invention terminates detecting module, is placed on test segment lower exit position.
Step S120: test starting detecting module obtains tested vechicle networking vehicle mounted WiFi Wireless Communication Equipment and sails the time into by test zone, and sail the performance test of time triggered to tested vechicle networking bus or train route WiFi wireless network according to the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle into by test zone;
In the present embodiment, this step is performed by test starting detecting module, and by detecting in testing vehicle the test I C card placed, the networking vehicle mounted WiFi Wireless Communication Equipment of acquisition tested vechicle sails the time into by test zone; Automatically test initiation command is generated further; Test initiation command comprises: test I C card card number, test zone sail time and test opening flag position into; Correspondingly, above-mentionedly according to tested vechicle networking vehicle mounted WiFi Wireless Communication Equipment by the concrete steps of time triggered to the performance test of tested vechicle networking bus or train route WiFi wireless network of sailing into of test zone be: when described test initiation command being detected, trigger the performance test to tested vechicle networking bus or train route WiFi wireless network;
Step S130: carry out the performance test to tested vechicle networking bus or train route WiFi wireless network, obtains tested vechicle networking bus or train route WiFi wireless network performance parameter;
In this step, according to test initiation command, performance measuring modules carries out the performance test to tested vechicle networking bus or train route WiFi wireless network, obtains tested vechicle networking bus or train route WiFi wireless network performance parameter, this step concrete as shown in Figure 2;
As shown in Figure 2, step S130 specifically comprises the following steps:
Step S131: after described test process starts, performance measuring modules is that the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle distributes 16bit short address;
Step S132: performance measuring modules to the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle with 2 seconds for loop cycle send probe data packet; Be respectively short bag and long bag, length is 64 bytes and 1065 bytes, and the information specifically comprised in probe data packet has: probe data packet sequence number, destination node address and probe data packet transmitting time T1; Accordingly, performance measuring modules receives the response data packet that the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle returns; Be respectively short bag and long bag, length is 64 bytes and 1065 bytes, and the information specifically comprised in response data packet has: the probe data packet sequence number received, source node address, probe data packet transmitting time T1, probe data packet time of reception T2 and response data packet send time T3;
Step S133: monitor each probe data packet and response data package informatin, according to probe data packet sequence number, the performance measuring modules described in record receives the time of reception T4 of response data packet;
Step S134: according to each probe data packet sequence number, utilizes formula 1 to calculate and records time lag of first order test sample book value:
Time lag of first order test sample book value=(T2-T1)+(T4-T3) (1)
Further, within 2 seconds test period, according to described probe data packet sequence number, when not receiving described response data packet, be then judged to be generation packet loss; Record the described packet loss event in described test process;
Step S140: obtain tested vechicle networking vehicle mounted WiFi Wireless Communication Equipment and roll the time away from by test zone, and according to the performance test that the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle stops tested vechicle networking bus or train route WiFi wireless network by the time of rolling away from of test zone;
In the present embodiment, this step terminates detecting module perform by testing, and by detecting in testing vehicle the test I C card placed, the networking vehicle mounted WiFi Wireless Communication Equipment of acquisition tested vechicle rolls the time away from by test zone; Automatically EOT end of test instruction is generated further; EOT end of test instruction comprises: comprise test I C card card number, test zone rolls the time away from and EOT end of test flag bit; Correspondingly, above-mentioned termination by time of rolling away from of test zone according to tested vechicle networking vehicle mounted WiFi Wireless Communication Equipment to the concrete steps of the performance test of tested vechicle networking bus or train route WiFi wireless network is: when described EOT end of test instruction being detected, terminate the performance test to tested vechicle networking bus or train route WiFi wireless network;
Step S150: obtain the average travel speed of the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle by test zone; And according to tested vechicle networking bus or train route WiFi wireless network performance calculation of parameter tested vechicle networking bus or train route WiFi Wireless Communication Equipment comprehensive performance parameter.
In this step, testing control module obtains the average travel speed of the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle by test zone; And according to tested vechicle networking bus or train route WiFi wireless network performance calculation of parameter tested vechicle networking bus or train route WiFi Wireless Communication Equipment integrated performance index, this step is concrete as shown in Figure 3;
As shown in Figure 3, this step S150 specifically comprises:
Step S151: the test zone that testing control module is sailed in time and described EOT end of test instruction according to the test zone in the described test initiation command received rolls the time away from, calculate testing time window value, be specially test zone and roll time subtract test region away from and sail the time into; Further, calculate the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle by the average travel speed of test zone, be specially test segment length divided by testing time window value;
Step S152: calculate tested vechicle networking bus or train route WiFi wireless network average latency according to the described delay sample value recorded in test process, its unit is second, formula specific as follows:
In formula, all delay sample value sums refer to adding of each delayed test sample value and, delay sample value sum refers to the number of times sum of delay sample value, also the number of i.e. probe data packet;
Further, according to the described packet loss event recorded in test process, obtain test period packet loss number, then calculate tested vechicle networking bus or train route WiFi wireless network frame loss rate according to formula 3, formula specific as follows:
Step S153: according to above-mentioned tested vechicle networking bus or train route WiFi wireless network average latency, calculate tested vechicle networking bus or train route WiFi wireless network average throughput, its unit is bytes-per-second, formula specific as follows:
Step S154: according to described network average throughput, calculates tested vechicle networking vehicle mounted WiFi Wireless Communication Equipment comprehensive performance parameter, formula specific as follows:
The present embodiment is by detecting that the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle is by time of sailing into of test segment with roll the time away from, control startup and the termination of test process, avoid blindly sending performance test packet, improve the accuracy to the test of tested vechicle networking bus or train route WiFi wireless network performance.In addition, can also carry out testing and obtaining test data when the networking vehicle mounted WiFi Wireless Communication Equipment translational speed the unknown of tested vechicle.
Fig. 4 is the structural representation of car of the present invention networking bus or train route WiFi wireless network performance testing equipment 200, and with reference to Fig. 4, this equipment comprises as lower module:
Test starting detecting module 210, is connected by Ethernet with testing control module 220, sails the time into, and generate test initiation command for obtaining the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle by test zone; And networking vehicle mounted for tested vechicle WiFi Wireless Communication Equipment is transferred to testing control module by the time of sailing into of test zone by Ethernet.
Testing control module 220, for controlling startup to tested vechicle networking bus or train route WiFi wireless network performance test process and termination, and calculate the average travel speed of the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle by test zone, and calculate tested vechicle networking bus or train route WiFi Wireless Communication Equipment comprehensive performance parameter;
Performance measuring modules 230, is connected by serial ports with testing control module 220, for carrying out the performance measurement of tested vechicle networking bus or train route WiFi wireless network and obtaining tested vechicle networking bus or train route WiFi wireless network performance parameter; And by obtain data by Serial Port Transmission to testing control module.
Test terminates detecting module 240, is connected by Ethernet with testing control module 220, rolls the time away from, and generate EOT end of test instruction for obtaining the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle by test zone; And networking vehicle mounted for tested vechicle WiFi Wireless Communication Equipment is transferred to testing control module by the time of rolling away from of test zone by Ethernet.
Test starting detecting module 210 detects the test I C card placed in the testing vehicle by test zone, obtains tested vechicle networking vehicle mounted WiFi Wireless Communication Equipment and sails the time into by test zone, and automatically generate test initiation command; Test initiation command is passed to described testing control module 220 by cable network by described test starting detecting module 210; Described testing control module 220 is according to the described test initiation command received, and control performance measurement module 230 starts to carry out the performance measurement to tested vechicle networking bus or train route WiFi wireless network;
Described test terminates the test I C card placed in the testing vehicle that detecting module 240 detects by test zone, obtains the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle and rolls the time away from by test zone, and generation EOT end of test instruction automatically; Described test terminates detecting module 240 and EOT end of test instruction is passed to described testing control module 220 by cable network; Described testing control module 220 is according to the described test initiation command received, and control performance measurement module 230 terminates the network performance measurement carried out tested vechicle networking bus or train route WiFi wireless network;
Described performance measuring modules 230, in test process, obtains and preserves tested vechicle networking bus or train route WiFi Wireless Network delay test sample book value and packet loss logout; At the end of described test process, the described network delay test sample book value that described testing control module 220 is preserved according to performance measuring modules 230 and described packet loss logout, calculate tested vechicle networking bus or train route WiFi wireless network performance parameter, further, testing control module 220, according to the described tested vechicle networking bus or train route WiFi wireless network performance parameter obtained, calculates tested vechicle networking vehicle mounted WiFi Wireless Communication Equipment comprehensive performance parameter.
As shown in Figure 5, test starting detecting module 210 comprises further:
Receiver Module 211, for reading the described test I C card by placing in the testing vehicle of test zone;
Microprocessor unit 212, for driving described Receiver Module 211 to read the test I C card information placed in described testing vehicle, and generating described test initiation command, being transferred to described testing control module 220 further by Network Interface Module 213;
Network Interface Module 213, for the network service between described testing control module 220.
As shown in Figure 6, testing control module 220 comprises further:
Serial communication modular 221, for communicating with described performance measuring modules 230;
Network Interface Module 222, for described test starting detecting module 210, and test terminates the network service between detecting module 240.
Test process control module 223, starts test process for the described test initiation command sent according to described test starting detecting module 210; And the described EOT end of test order fulfillment test process of detecting module 240 transmission is terminated according to described test; And obtain tested vechicle networking bus or train route WiFi Wireless Network delay test sample book value and packet loss logout by described serial communication modular 221 from described performance measuring modules 230; The described data computation module of further triggering 224 calculates tested vechicle networking bus or train route WiFi wireless network performance parameter and tested vechicle networking vehicle mounted WiFi Wireless Communication Equipment comprehensive performance parameter.
Data computation module 224, for calculating tested vechicle networking bus or train route WiFi wireless network performance parameter, comprises average delay time, packet loss and average throughput; And calculate tested vechicle networking vehicle mounted WiFi Wireless Communication Equipment comprehensive performance parameter.
User interface 225, for receiving the described test essential information of manual entry, and shows described test result.
As shown in Figure 7, performance measuring modules 230 comprises further:
WiFi data transmit-receive module 231, for communicating with the networking vehicle mounted WiFi Wireless Communication Equipment of described tested vechicle;
Microprocessor unit 232, communicate for driving the networking vehicle mounted WiFi Wireless Communication Equipment of described WiFi data transmit-receive module 231 and described tested vechicle, and obtain and preserve tested vechicle networking bus or train route WiFi Wireless Network delay test sample book value and packet loss logout, be transferred to described testing control module 220 further by serial communication modular 233;
Serial communication modular 233, for communicating with described testing control module 220;
As shown in Figure 8, test end detecting module 240 comprises further:
Receiver Module 241, for reading the described test I C card by placing in the testing vehicle of test zone;
Microprocessor unit 242, for driving described Receiver Module 241 to work, and generating described test initiation command, being transferred to described testing control module 220 further by Network Interface Module 243;
Network Interface Module 243, for the network service between described testing control module 220.
The present embodiment is by detecting that the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle is by time of sailing into of test zone with roll the time away from, control startup and the termination of test process, avoid blindly sending performance test packet, improve the accuracy to the test of tested vechicle networking bus or train route WiFi wireless network performance.In addition, can also carry out testing and obtaining test data when the networking vehicle mounted WiFi Wireless Communication Equipment translational speed the unknown of tested vechicle.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; yes should understand; the foregoing is only specific embodiments of the invention; the protection range be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement, all should be included within protection scope of the present invention.
Claims (5)
1. a car networking bus or train route WiFi wireless network performance testing equipment, is characterized in that, comprise test starting detecting module, test terminates detecting module, performance measuring modules, testing control module;
Described test starting detecting module sails the time for obtaining the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle into by test zone, and by networking vehicle mounted for tested vechicle WiFi Wireless Communication Equipment by time of sailing into of test zone by cable-network transmission to testing control module;
Described test terminates detecting module and rolls the time for obtaining the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle away from by test zone, and by networking vehicle mounted for tested vechicle WiFi Wireless Communication Equipment by time of rolling away from of test zone by cable-network transmission to testing control module;
Described performance measuring modules, for carrying out the performance measurement to tested vechicle networking bus or train route WiFi wireless network, obtains tested vechicle networking bus or train route WiFi wireless network performance parameter; By obtain data by cable-network transmission to testing control module;
Described testing control module, the time is sailed into by test zone for the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle sent by cable network according to test starting detecting module, trigger the performance test to tested vechicle networking bus or train route WiFi wireless network, and terminate according to test the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle that detecting module sent by cable network and roll the time away from by test zone, stop the performance test to bus or train route WiFi wireless network of being networked by tested vechicle, and according to tested vechicle networking vehicle mounted WiFi Wireless Communication Equipment by time of sailing into of test zone with roll the average travel speed of the networking vehicle mounted WiFi Wireless Communication Equipment of Time Calculation tested vechicle by test zone away from, and according to the tested vechicle networking bus or train route WiFi wireless network performance calculation of parameter tested vechicle networking bus or train route WiFi Wireless Communication Equipment comprehensive performance parameter obtained.
2., based on a method of testing for car networking bus or train route WiFi wireless network performance testing equipment described in claim 1, it is characterized in that, comprise the following steps:
Step S110: record tested static essential information, and start testing vehicle and pass through test zone; Described tested static essential information comprises: the networking vehicle mounted WiFi Wireless Communication Equipment numbering of test I C card card number, tested vechicle;
Step S120: test starting detecting module obtains tested vechicle networking vehicle mounted WiFi Wireless Communication Equipment and sails the time into by test zone, and sail the performance test of time triggered to tested vechicle networking bus or train route WiFi wireless network according to the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle into by test zone;
Step S130: carry out the performance test to tested vechicle networking bus or train route WiFi wireless network, obtains tested vechicle networking bus or train route WiFi wireless network performance parameter;
Step S140: obtain tested vechicle networking vehicle mounted WiFi Wireless Communication Equipment and roll the time away from by test zone, and according to the performance test that the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle stops tested vechicle networking bus or train route WiFi wireless network by the time of rolling away from of test zone;
Step S150: obtain the average travel speed of the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle by test zone; And according to tested vechicle networking bus or train route WiFi wireless network performance calculation of parameter tested vechicle networking bus or train route WiFi Wireless Communication Equipment comprehensive performance parameter.
3. car networking bus or train route WiFi wireless network performance method of testing according to claim 2, it is characterized in that, described step S130 specifically comprises the following steps:
S131) performance measuring modules is that the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle distributes 16bit short address;
S132) performance measuring modules to the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle with 2 seconds for loop cycle send probe data packet; Probe data packet comprises short bag and long bag, and short packet length is 64 bytes, and long packet length is 1065 bytes, and the information specifically comprised in probe data packet has: probe data packet sequence number, destination node address and probe data packet transmitting time T1; Accordingly, performance measuring modules receives the response data packet that the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle returns; Short bag, the concrete response data packet length of long bag is respectively 64 bytes and 1065 bytes, and the information specifically comprised in response data packet has: the probe data packet sequence number received, source node address, probe data packet transmitting time T1, probe data packet time of reception T2 and response data packet send time T3;
S133) monitor each probe data packet and response data package informatin, according to probe data packet sequence number, record performance measurement module receives the time of reception T4 of response data packet;
S134) according to each probe data packet sequence number, utilize formula (1) to calculate and record time lag of first order test sample book value:
Time lag of first order test sample book value=(T2-T1)+(T4-T3) (1)
Within 2 seconds test period, according to described probe data packet sequence number, when not receiving described response data packet, be then judged to be generation packet loss; Record the described packet loss event in described test process.
4. method of testing according to claim 2, is characterized in that, described step S150 specifically comprises the following steps:
S151) test zone that testing control module is sailed in time and EOT end of test instruction according to the test zone in the test initiation command received rolls the time away from, calculate testing time window value, be specially test zone and roll time subtract test region away from and sail the time into; Calculate the networking vehicle mounted WiFi Wireless Communication Equipment of tested vechicle by the average travel speed of test zone, be specially test segment length divided by testing time window value;
S152) calculate tested vechicle networking bus or train route WiFi wireless network average latency according to the described delay sample value recorded in test process, its unit is second, formula specific as follows:
In formula (2), all delay sample value sums refer to adding of each delayed test sample value and, delay sample value sum refers to the number of times sum of delay sample value, also the number of i.e. probe data packet;
According to the described packet loss event recorded in test process, obtain test period packet loss number, then according to calculating tested vechicle networking bus or train route WiFi wireless network frame loss rate with following formula (3):
S153) according to above-mentioned tested vechicle networking bus or train route WiFi wireless network average latency, calculate tested vechicle networking bus or train route WiFi wireless network average throughput, its unit is bytes-per-second, formula specific as follows:
5. the method for testing according to claim 2 or 4, is characterized in that, in step S150, according to described network average throughput, calculates tested vechicle networking vehicle mounted WiFi Wireless Communication Equipment comprehensive performance parameter:
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| CN105591840A (en) * | 2015-12-23 | 2016-05-18 | 武汉烽火信息集成技术有限公司 | Automatic test platform and method used for testing track traffic signal system |
| CN106019322A (en) * | 2016-06-30 | 2016-10-12 | 大连楼兰科技股份有限公司 | Testing system and method for high and low temperatures of GPS module in car-networking terminal equipment |
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| CN108200595A (en) * | 2017-12-28 | 2018-06-22 | 长安大学 | Towards Che-road of car networking IEEE802.11p agreements and Che-vehicle communication test method |
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| CN105591840A (en) * | 2015-12-23 | 2016-05-18 | 武汉烽火信息集成技术有限公司 | Automatic test platform and method used for testing track traffic signal system |
| CN106019322A (en) * | 2016-06-30 | 2016-10-12 | 大连楼兰科技股份有限公司 | Testing system and method for high and low temperatures of GPS module in car-networking terminal equipment |
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| CN107872831A (en) * | 2016-09-27 | 2018-04-03 | 通用汽车环球科技运作有限责任公司 | The Consumer's Experience of vehicle of the optimization with multiple focuses |
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| CN108200550A (en) * | 2017-12-04 | 2018-06-22 | 深圳无线电检测技术研究院 | LTE-V2X dynamic performance testing methods and device under a kind of external field environment |
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| CN108200595A (en) * | 2017-12-28 | 2018-06-22 | 长安大学 | Towards Che-road of car networking IEEE802.11p agreements and Che-vehicle communication test method |
| CN108391250A (en) * | 2018-03-02 | 2018-08-10 | 重庆大学 | Inter-vehicle communication network performance field testing method and test system |
| CN108391250B (en) * | 2018-03-02 | 2019-12-31 | 重庆大学 | Workshop communication network performance external field test method and test system |
| CN109194544B (en) * | 2018-09-03 | 2021-08-17 | 长安大学 | Vehicle-road communication testing platform and testing method based on EUHT technology |
| CN109194544A (en) * | 2018-09-03 | 2019-01-11 | 长安大学 | A kind of bus or train route communication test platform and test method based on EUHT technology |
| CN109491364A (en) * | 2018-11-19 | 2019-03-19 | 长安大学 | A kind of drive robot system and control method for vehicle testing |
| CN111435087A (en) * | 2019-01-14 | 2020-07-21 | 阿里巴巴集团控股有限公司 | Map matching method and device, server device and readable storage medium |
| CN111435087B (en) * | 2019-01-14 | 2024-04-09 | 阿里巴巴集团控股有限公司 | Map matching method and device, server device and readable storage medium |
| US11178028B1 (en) * | 2020-09-15 | 2021-11-16 | T-Mobile Usa, Inc. | Web interface to remotely collect and analyze mobile device logs |
| US11489742B2 (en) * | 2020-09-15 | 2022-11-01 | T-Mobile Usa, Inc. | Web interface to remotely collect and analyze mobile device logs |
| US20230021250A1 (en) * | 2020-09-15 | 2023-01-19 | T-Mobile Usa, Inc. | Web interface to remotely collect and analyze mobile device logs |
| US11722388B2 (en) * | 2020-09-15 | 2023-08-08 | T-Mobile Usa, Inc. | Web interface to remotely collect and analyze mobile device logs |
| CN112929846A (en) * | 2021-02-26 | 2021-06-08 | 北京邮电大学 | Time distribution method, device, equipment and storage medium based on vehicle-mounted equipment |
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