Design and implementation of a P2P communication infrastructure for WSN-based vehicular traffic control applications

Wireless Sensor Network (WSN) technology has recently started to be applied to Intelligent Transportation Systems (ITS). In this kind of network, sensor nodes are scattered over a sensor field and they transmit information to a sink node. In this paper, we first propose the design of a proxy functionality for the sink node, which will be responsible for exchanging information with other proxy nodes by means of a new Peer-to-Peer (P2P) communication infrastructure implemented using a Distributed Hash Table (DHT). This infrastructure will also facilitate the distributed processing of sensing data in order to perform path planning in a vehicular traffic control application. This approach will be able to distribute the computational tasks for route calculations over the different sink nodes in the network. This paper will present a detailed prototype of the proposed P2P communication infrastructure. (C) 2013 Elsevier B.V. All rights reserved.