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OCO: A Multi-channel MAC Protocol with Opportunistic Cooperation for Wireless Sensor Networks

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3 Author(s)
Jinbao Li ; Sch. of Comput. Sci. & Technol., Heilongjiang Univ., Harbin, China ; Desheng Zhang ; Longjiang Guo

To handle the triple hidden terminal problems, this paper proposes OCO, an asynchronous multi-channel MAC protocol with opportunistic cooperation for wireless sensor networks. By adopting opportunistic cooperation, OCO effectively alleviates, if not eliminates, the triple hidden terminal problems. More importantly, OCO is fully distributed with no requirements of time synchronization or multi-radio scheme, so it is easy to be implemented on the real sensor nodes. Via the theoretical analysis, the opportunistic probability that a node cooperates with its neighbor is obtained. To validate the effectiveness of opportunistic cooperation, extensive simulations and real test bed experiments were con-ducted. The simulation and experimental results show that when the number of channels is large or the network loads are heavy, OCO improves energy efficiency and throughput significantly compared with other works in the literature.

Published in:

Embedded and Ubiquitous Computing (EUC), 2010 IEEE/IFIP 8th International Conference on

Date of Conference:

11-13 Dec. 2010

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