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http://dx.doi.org/10.5369/JSST.2013.22.1.18

Priority Based Multi-Channel MAC Protocol for Real-Time Monitoring of Weapon Flight Test Using WSNs  

Min, Joonki (Agency for Defense Development)
Kim, Joo-Kyoung (Korea Aerospace Research Institute)
Kwon, Youngmi (Dept. of Information Communications Engineering, Chungnam National University)
Lee, Yong-Jae (Agency for Defense Development)
Publication Information
Abstract
Real-time monitoring is one of the prime necessities in a weapon flight test that is required for the efficient and timely collection of large amounts of high-rate sampled data acquired by an event-trigger. The wireless sensor network is a good candidate to resolve this requirement, especially considering the inhospitable environment of a weapon flight test. In this paper, we propose a priority based multi-channel MAC protocol with CSMA/CA over a single radio for a real-time monitoring of a weapon flight test. Multi-channel transmissions of nodes can improve the network performance in wireless sensor networks. Our proposed MAC protocol has two operation modes: Normal mode and Priority Mode. In the normal mode, the node exploits the normal CSMA/CA mechanism. In the priority mode, the node has one of three grades - Class A, B, and C. The node uses a different CSMA/CA mechanism according to its grade that is determined by a signal level. High grade nodes can exploit more channels and lower backoff exponents than low ones, which allow high grade nodes to obtain more transmission opportunities. In addition, it can guarantee successful transmission of important data generated by high grade nodes. Simulation results show that the proposed MAC exhibits excellent performance in an event-triggered real-time application.
Keywords
Wireless sensor networks; Real-time monitoring; Weapon flight test; Multi-channel MAC;
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Times Cited By KSCI : 2  (Citation Analysis)
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