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Data collection is one of the basic tasks of WSN, and data collection protocol occupies a pivotal position in WSN. Data collection protocol in TinyOS 2.0 is implemented in the form of Collection Tree Protocol (CTP). However, CTP have proved to be extremely efficient, in practical applications, CTP also have some disadvantages. The paper presents an improved data collection protocol ICTP based on the...
A geographical forwarding algorithm is an attractive localized data forwarding scheme for wireless sensor networks (WSNs) due to its directional routing properties and scalability. Also, the inherent constraints of WSNs such as limited battery power and network resources require the simplicity and energy efficiency of protocols. In this paper, we propose a Time Backoff-based energy-efficient Geographical...
Wireless sensor network (WSN) is a wireless network that gathers information from remote area with autonomously configured routing path. We propose a fusion based routing for converge cast in which all sensors periodically forward collected data to a base station. Previous researches dealt with only full-fusion or no-fusion case. Our fusion rate based spanning tree (FST) can provide effective routing...
Wireless sensor network is applied widely in monitoring system of coal mine. An application environment of WSN in coal mine is analyzed to satisfy the data acquirement of mine monitoring. The result of analysis shows that routing protocols applied in coal mine should have four characteristics: data-centric routing mechanism, supporting query of geographic position information, low delay and high reliability...
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