Proactive multipath data dissemination for Multimedia Sensor Networks

Sophistication and refinement of technology has led to the development of Wireless Sensor Networks (WSNs). Video sensors are actively used in WSNs to increase their event description power. Wireless Multimedia Sensor Networks (WMSNs) have been deployed in numerous applications e.g. environmental monitoring, advanced health care delivery, industrial process control and disaster relief operations. WMSNs have limited transmission capacity and delivery of multimedia content using single path routing introduces large delays. This has motivated the research community to develop multi-path routing schemes that efficiently transmit multimedia content while maintaining delay constraints. Most of these approaches require each sensor nodes to have information of their geographic co-ordinates, along with co-ordinates of their neighbors and destination. In this paper we present a novel disjoint multi-path routing scheme that does not require any information of geographical coordinates. This scheme explores energy efficient, minimum hop delay disjointed paths between video sensor and base-station to support multiple routes. Performance evaluation of the our proposed scheme is performed in various network environments. It is observed that our scheme surpasses simple disjoint multi-path schemes and results in considerable energy saving in all network deployment models under consideration.