Wireless network testbed oriented internet of vehicles
Duan Zong-ta · 2014
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 70km·h-1,all performance indexes decrease significantly comparing to the situation of 20km·h-1.Average network round-trip delay increases about 2.4times, packet loss rate increases about 10times,and average throughput decreases about 2.6times.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.3tabs,5figs,18refs.