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SeNDORComm: An Energy-Efficient Priority-Driven Communication Layer for Reliable Wireless Sensor Networks

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4 Author(s)
Sundaram, V. ; Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN ; Bagchi, S. ; Yung-Hsiang Lu ; Zhiyuan Li

In many reliable Wireless Sensor Network (WSN) applications, messages have different priorities depending on urgency or importance. For example, a message reporting the failure of all nodes in a region is more important than that for a single node. Moreover, traffic can be bursty in nature, such as when a correlated error is reported by multiple nodes running identical code. Current communication layers in WSNs lack efficient support for these two requirements. We present a priority-driven communication layer, called SeNDORComm, which schedules transmission of packets driven by application-specified priority, buffers and packs multiple messages in a packet, and honors the latency guarantee for a message. We show that SeNDORComm improves energy efficiency, message reliability, and network utilization and delays congestion in a network. We extensively evaluate SeNDORComm using analysis, simulation, and testbed experiments. We demonstrate the improvement in goodput of SeNDORComm over the default communication layer, GenericComm in TinyOS (134.78% for a network of 20 nodes).

Published in:

Reliable Distributed Systems, 2008. SRDS '08. IEEE Symposium on

Date of Conference:

6-8 Oct. 2008