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This paper reports on the results of a simulation comparison made by an independent researcher using the ns-2.26 simulator for the WSN protocols: directed diffusion (DD), two-tier data dissemination (TTDD), and gradient broadcast (GRAB). Our performance study provides useful insights for the network designer - such as which protocols (and design choices) control the traffic well, improve data delivery or reduce overall energy consumption. We observe and identify a number of statically configured parameters for each protocol which reduce performance and suggest how they should be dynamically configured in response to measured network state.
Date of Conference: 29 Nov.-3 Dec. 2004