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Analysis of the Contention Access Phase of a Reservation MAC Protocol for Wide-Area Data Intensive Sensor Networks

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3 Author(s)
Arindam K. Das ; Univ. of Washington, Seattle ; Sumit Roy ; Abhijit Mahalanobis

We propose a contention based reservation MAC protocol for a collaborative sensing scenario involving a set of surveillance UAVs communicating with a hub. Data transmission rights are secured via distributed contention access between the UAV nodes for K available mini-slots. Each node chooses a slot with probability p independently of the others and is only allowed one attempt in a frame. We investigate the optimal choice of p which maximizes the one-shot probability of success(or alternately, the expected number of successes), beta, over the K minislots. We show that beta is prone to local maxima and develop an empirical formula based on goodness-of-fit which matches the numerically obtained values closely.

Published in:

IEEE GLOBECOM 2007 - IEEE Global Telecommunications Conference

Date of Conference:

26-30 Nov. 2007