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| A Channel Reliability Based Multi-channel MAC Protocol in Wireless Sensor Networks |
| XIAO Rong, JIANG Ling-Ge, HE Chen |
| (School of Electronic, Information and Electrical Engineering, Shanghai Jiaotong University, Shanghai 200240, China) |
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Abstract In order to meet the demand of high bandwidth in resource-constrained sensor networks, a channel-reliability based multi-channel MAC protocol namely RB-MAC was proposed. This protocol introduces a new kind of control packet format and handshaking process. Moreover, a ready-to-send channel list concept and a ready-to-receive channel list concept were proposed. In order to find the most reliable channel for data transmission, the data channel selection problem is transformed into the multiarmed bandit problem which is solved by the upper confidence bound algorithm. The simulation results show that, compared with dynamic channel allocation MAC (DCA-MAC), RBMAC decreases the delay and packet loss ratio, thereby increase the throughput. Besides, RB-MAC is more immune to interferences.
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Received: 10 November 2011
Published: 28 September 2012
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