面向车联网的无线网络试验床

段宗涛; 康军; 唐蕾; 卢明明; 王栋; 王超

面向车联网的无线网络试验床

段宗涛^{1, 2,},
康军^{1, 2},
唐蕾^{1, 2},
卢明明¹,
王栋¹,
王超¹

1.
长安大学信息工程学院, 陕西西安 710064
2.
长安大学陕西省道路交通智能检测与装备工程技术研究中心, 陕西西安 710064

基金项目:

国家自然科学基金项目 51278058

国家自然科学基金项目 61303041

中央高校基本科研业务费专项资金项目 2013G2241020

中央高校基本科研业务费专项资金项目 2013G1241119

详细信息

作者简介:
段宗涛(1977-), 男, 陕西凤翔人, 长安大学副教授, 工学博士, 从事交通信息服务研究

中图分类号: U495
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- 被引次数: 0
出版历程
- 收稿日期: 2013-11-16
- 刊出日期: 2014-04-25

Wireless network testbed oriented internet of vehicles

DUAN Zong-tao^{1, 2
,},
KANG Jun^{1, 2},
TANG Lei^{1, 2},
LU Ming-ming¹,
WANG Dong¹,
WANG Chao¹

1.
School of Information Engineering, Chang'an University, Xi'an 710064, Shaanxi, China
2.
Road Traffic Intelligent Detection and Equipment Engineering Center of Shaanxi Province, Chang'an University, Xi'an 710064, Shaanxi, China

More Information

Author Bio:
DUAN Zong-tao (1977-), male, associate professor, PhD, +86-29-82334359, ztduan@chd.edu.cn

摘要

摘要: 考虑车联网中待测节点的快速移动性及实现方式多样性等特点, 应用网络断层扫描技术, 设计并实现了一种面向车联网的无线网络试验床。试验床主要包括网络性能测量单元和测试区域上下游探测单元。用试验床测试了车联网中测试车快速移动对网络性能的影响。测试性能指标包括网络往返延迟、网络丢包率、网络平均吞吐率等。测试结果表明: 随车联网中测试车平均行程速度的增大, 无线网络性能指标呈下降趋势。当测试车平均行程速度达到70km·h^-1以上时, 各项性能指标与20km·h^-1时相比下降明显, 网络平均往返延迟增加约2.4倍, 丢包率提高约10倍, 网络平均吞吐率下降约2.6倍。可见, 试验床能够实现对车联网无线网络性能指标的有效测量和评估。
- 车联网 /
- 无线通信子系统 /
- 无线网络试验床 /
- 网络断层扫描 /
- 网络性能测量
Abstract: Considering the features of rapid mobility and realizing way diversity of tested nodes in the internet of vehicles, a wireless network testbed oriented internet of vehicles was designed and implemented by using network tomography technology.The testbed was composed of network performance measurement units and up-down stream detection units of testing area.The impact of rapid mobility of test vehicle on network performance was tested by designed testbed.The performance indexes were composed of round-trip delay, packet loss rate, average throughput, etc.in the network.Test result indicates that wireless network performance indexes degrade with the increase of the average speed of test vehicle in the internet of vehicles.When the average speed of test vehicle is more than 70 km·h^-1, all performance indexes decrease significantly comparing to the situation of 20 km·h^-1.Average network round-trip delay increases about 2.4 times, packet loss rate increases about 10 times, and average throughput decreases about 2.6 times.Obviously, the wireless network performance indexes of internet of vehicles are measured and evaluated effectively by the designed wireless network testbed oriented internet of vehicles.
- internet of vehicles /
- wireless communication subsystem /
- wireless network testbed /
- network tomography /
- network performance measurement

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图 1 试验床结构

Figure 1. Testbed architecture

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图 2 试验床各模块的交互关系

Figure 2. Interactive relationship of testbed modules

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图 3 探测单元硬件结构

Figure 3. Hardware structure of detection unit

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图 4 测试流程

Figure 4. Testingflow

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图 5 性能指标与车速关系

Figure 5. Relationship between performance indexes and vehicle speed

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表 1 测试结果1

Table 1. Test result 1

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表 2 测试结果2

Table 2. Test result 2

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表 3 待测网络系统性能指标

Table 3. Performance indexes of tested network system

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