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- 저자 : Sankaranarayanan Swamynathan (검색결과 1 건)
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Selvakumar Sasirekha,Sankaranarayanan Swamynathan 한국통신학회 2017 Journal of communications and networks Vol.19 No.4
The sensor nodes have limited sensing, computation,communication capabilities and are mostly operated by batteriesin a harsh environment with non-replenishable power sources. These restrictions make the sensor network prone to failures becausemost of the energy is spent on data transmission, sensing, andcomputing. Many applications such as habitat monitoring, militarysurveillance and forest fire detection expect the sensor nodes to lastfor a long time because they operate human unattended. Therefore,the major challenges in designing a wireless sensor network (WSN)are energy conservation, reducing data transmission delay and improvingthe network lifetime. In this context, data aggregation is anintelligent technique used in WSN, wherein the data from disparatesources are accumulated at intermediate nodes, thereby reducingthe number of packets to be sent to the sink. Literature studyshows that various routing algorithms are used to perform dataaggregation based on the network topology. In order to provide animproved performance amongst the existing, a routing algorithmcalled cluster-chain mobile agent routing (CCMAR) is proposedin this work. It makes full use of the advantages of both low energyadaptive clustering hierarchy (LEACH) and power-efficientgathering in sensor information systems (PEGASIS). CCMAR dividesthe WSN into a few clusters and runs in two phases.The proposedsystem is simulated and evaluated for the performance metricssuch as energy consumption, transmission delay and networklifetime. The results demonstrate that the proposed CCMAR outperformsLEACH, PEGASIS and other similar routing algorithm,energy efficient cluster-chain based protocol.
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