A delay reduction scheme based on network coding for voice traffic in large-scale wireless sensor networks

Authors:
Inwhee Joe;Kyunghwan Kim
Affiliations:
Division of Computer Science and Engineering, Hanyang University, Seoul, South Korea;Division of Computer Science and Engineering, Hanyang University, Seoul, South Korea
Venue:
ICHIT'11 Proceedings of the 5th international conference on Convergence and hybrid information technology
Year:
2011

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Abstract

Recently, wireless sensor networks have been researched as core technologies for ubiquitous computing. In wireless sensor networks, a sensor node has typically small amount of memory, a processor with low computing power, and wireless interface of low bandwidth. Many sensor nodes should be placed to gather information in a large area because of small sensing range of the sensor nodes and limitation of wireless communications. In this paper, the cluster structure is used to organize large-scale sensor networks. Here, we propose a delay reduction scheme based on network coding for voice traffic by coping with the congestion problem in large-scale sensor networks. Finally, the simulation results show that the proposed scheme can reduce the transmission delay significantly.