Proposal of an Assured Corridor Mechanism for Urgent Information Transmission in Wireless Sensor Networks(Network)
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概要
- 論文の詳細を見る
Wireless sensor networks are expected to play an essential role as a social infrastructure to realize our safe and secure living environment. In such a network, critical information must be transmitted faster and more reliably than other information. We propose a distributed transmission mechanism which enables emergency packets to be carried with high reliability and low latency along a preferential path, which is called an "assured corridor." In this self-organizing assured corridor mechanism (ACM), which works above the network layer and does not depend on any specific routing or MAC protocol, a corridor is gradually established as the first packet containing urgent information propagates to the base station. The nodes surrounding the corridor suppress the transmission of non-urgent information and nodes in the corridor are kept awake to forward emergency packets. ACM avoids packet loss and possible delay caused by collisions in the wireless transmission and normal sleep scheduling. An acknowledgment and retransmission scheme is incorporated into ACM in order to improve reliability of transmission of urgent information. Simulation experiments showed that, when only one node transmitted urgent information, the retransmission contributed to establish a corridor quickly and that ACM improved the delivery ratio and the delay of the urgent information transmission once a corridor is established. It was proved that ACM was effective to improve the reliability and the latency of urgent information as well in the cases where multiple nodes sent urgent information at once.
- 社団法人電子情報通信学会の論文
- 2007-10-01
著者
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Wakamiya Naoki
Advanced Network Architecture Laboratory Department Of Information Networking Graduate School Of Inf
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Wakamiya Naoki
Osaka University Graduate School Of Information Science And Technology
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Wakamiya Naoki
Graduate School Of Information Science And Technology Osaka University
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MURATA Masayuki
Graduate School of Information Science and Technology, Osaka University
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Murata Masayuki
Osaka Univ. Suita‐shi Jpn
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Murata Masayuki
Graduate School Of Information Science And Technology
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Wakamiya Naoki
Osaka Univ. Suita‐shi Jpn
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KAWAI Tetsuya
Graduate School of Information Science and Technology, Osaka University
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Murata Masayuki
Graduate School Of Frontier Biosciences Osaka University
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Kawai Tetsuya
Graduate School Of Information Science And Technology Osaka University
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Murata Masayuki
Graduate School Of Engineering Science Osaka University
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