01477116

Component

Different wireless communication technologies (i.e. Wi-Fi, WiMAX) have been used as alternatives or supplement to wired communication in Intelligent Transportation Systems (ITS). Widespread deployment of wireless technologies needs clear understanding of limitations and advantages in different conditions. In this research, several field tests were performed to evaluate the performance of Wi-Fi wireless technology in multiple field conditions with varying qualities of Wi-Fi properties. Field tests revealed that modulation rates, transmission power, line of sight, distance between devices play critical role in the performance of Wi-Fi connections between two adjacent nodes in different roadway conditions. To achieve a desired level of performance between adjacent nodes in a wireless traffic sensor network, minimum network performance must be realized in the field. Traffic agencies can identify the achievable performance, such as saturated throughput, delivery ratio and received signal strength of the communication link at a particular location, by following the field test procedures presented in this paper.

This paper was sponsored by TRB committee AHB15 Intelligent Transportation Systems.

01470560

13-3942

English

18p

2013

Transportation Research Board 92nd Annual Meeting

Digital/other

Figures; References; Tables

Evaluation; Field tests; Intelligent transportation systems; Modulation; Network nodes; Reliability; Wireless communication systems

Data and Information Technology; Highways; Operations and Traffic Management; I72: Traffic and Transport Planning

Transportation Research Board Annual Meeting 2013 Paper #13-3942

TRIS, TRB, ATRI

Feb 5 2013 12:46PM