A fast and reliable protocol for wireless sensor networks in critical conditions monitoring applications

  • Authors:

  • Azzedine Boukerche;Richard Werner Nelem Pazzi;Regina Borges Araujo

  • Affiliations:

  • University of Ottawa, Ottawa, Canada;Universidade Federal de São Carlos, São Carlos, SP, Brazil;Universidade Federal de São Carlos, São Carlos, SP, Brazil

  • Venue:
  • MSWiM '04 Proceedings of the 7th ACM international symposium on Modeling, analysis and simulation of wireless and mobile systems
  • Year:
  • 2004

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Abstract

Sensor networks are increasingly being deployed for fine-grain monitoring of physical environments subjected to critical conditions such as fire, leaking of toxic gases and explosions. A great challenge to these networks is to provide a fast, reliable and fault tolerant channel for events diffusion, which meets the requirements of query-based, event-driven and periodic sensor networks application scenarios, even in the presence of emergency conditions that can lead to node failures and path disruption to the sink that receives those events. This paper presents a fault tolerant and low latency algorithm, which we refer to as PEQ (Periodic, Event-Driven and Query-Based Protocol), that meets sensor networks requirements for critical conditions surveillance applications. The algorithm uses the publish/subscribe paradigm to disseminate requests across the network and an ack-based scheme to provide fault tolerance. The algorithm was implemented using NS-2 simulator and compared to the Directed Diffusion paradigm. Important metrics were evaluated showing that the proposed algorithm can be a proper solution to meet constraints and requirements of events delivery in critical conditions monitoring applications.