Statistical Properties of the Delivery Rate for Single-Sink and Multiple-Sink Sensor Networks

Authors:
Marco Zuniga;Manfred Hauswirth;Yang Yang
Affiliations:
Digital Enterprise Research Institute, National University of Ireland, Galway;Digital Enterprise Research Institute, National University of Ireland, Galway;Department of Electrical Engineering, University College London, U.K.
Venue:
ADHOC-NOW '09 Proceedings of the 8th International Conference on Ad-Hoc, Mobile and Wireless Networks
Year:
2009

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Abstract

In wireless sensor network applications where each node sends a packet to a sink, the stochastic nature of the link affects the delivery rate (total number of packets delivered at the sink). Based on a simple analytical model, we study the statistical properties of the delivery rate for scenarios without link or transport layer retransmission (best-effort routing). For these best-effort scenarios, we derive bounds for the expectation and variance of the delivery rate for single-sink and multiple-sink architectures. Our analytical findings are further validated through simulations using a realistic link-layer model.