Multimedia Data Transport for Wireless Sensor Networks

This paper presents the study and implementation of a reliable transport protocol for wireless multimedia sensor networks. The paper was based on an existing transport protocol for sensor networks, the DTSN ("Distributed Transport for Sensor Networks") developed at Inesc within projects IST FP6 UbiSec&Sens, EuroFGI and FP7 EuroNF. For multimedia data transport, some structural changes were made to DTSN, and mechanisms were added in order to provide a differentiated reliability service for packets flowing on the sensor network. The new service allows a multimedia data stream to be divided on several blocks with different reliability. The blocks' size and minimum reliability required are sent to the network by the client to configure and initialize the differentiated reliability service.