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Sensors 2011, 11(4), 4104-4117; doi:10.3390/s110404104

A Distance-Aware Replica Adaptive Data Gathering Protocol for Delay Tolerant Mobile Sensor Networks

School of Computer Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
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Received: 9 February 2011 / Revised: 18 March 2011 / Accepted: 21 March 2011 / Published: 6 April 2011
(This article belongs to the Section Physical Sensors)
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Abstract

In Delay Tolerant Mobile Sensor Networks (DTMSNs) that have the inherent features of intermitted connectivity and frequently changing network topology it is reasonable to utilize multi-replica schemes to improve the data gathering performance. However, most existing multi-replica approaches inject a large amount of message copies into the network to increase the probability of message delivery, which may drain each mobile node’s limited battery supply faster and result in too much contention for the restricted resources of the DTMSN, so a proper data gathering scheme needs a trade off between the number of replica messages and network performance. In this paper, we propose a new data gathering protocol called DRADG (for Distance-aware Replica Adaptive Data Gathering protocol), which economizes network resource consumption through making use of a self-adapting algorithm to cut down the number of redundant replicas of messages, and achieves a good network performance by leveraging the delivery probabilities of the mobile sensors as main routing metrics. Simulation results have shown that the proposed DRADG protocol achieves comparable or higher message delivery ratios at the cost of the much lower transmission overhead than several current DTMSN data gathering schemes. View Full-Text
Keywords: delay tolerant mobile sensor networks; wireless sensor networks; data gathering scheme; replica adaptive; delivery probability delay tolerant mobile sensor networks; wireless sensor networks; data gathering scheme; replica adaptive; delivery probability
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Feng, Y.; Gong, H.; Fan, M.; Liu, M.; Wang, X. A Distance-Aware Replica Adaptive Data Gathering Protocol for Delay Tolerant Mobile Sensor Networks. Sensors 2011, 11, 4104-4117.

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