A Patterned Preamble MAC Protocol for Wireless Sensor Networks

Inwhee JOE  

IEICE TRANSACTIONS on Communications   Vol.E91-B    No.2    pp.658-661
Publication Date: 2008/02/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.2.658
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
patterned preamble,  MAC,  wireless sensor networks,  low power,  channel utilization,  

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In this paper, we propose a novel MAC protocol with the patterned preamble technique to improve performance in terms of low power, channel utilization, and delay in wireless sensor networks. B-MAC is one of typical MAC protocols for wireless sensor networks using the duty cycle in order to achieve low-power operation. Since it works in an asynchronous fashion, B-MAC employs extended preamble and preamble sampling techniques. Even if it has outstanding performance in idle state, the overhead of these techniques is very large when packets are sent and received, because there is a lot of waste in the traditional preamble method. Instead of the simple preamble, our proposed MAC solution is to introduce more intelligent preamble with some patterns consisting of 2 phases (Tx phase & Ack phase). With this concept we implement real source code working on the mica2 platform with Tinyos-1.x version. Also, the test set-up is presented, and the test results demonstrate that the proposed protocol provides better performance in terms of delay compared to B-MAC.