energy efficient path determination in wireless sensor network by critical path method
K G REVATHI,MONICA M
Published in International Journal of Advanced Research in Electronics, Communication & Instrumentation Engineering and Development
ISSN: 2347 -7210 Impact Factor:1.9 Volume:3 Issue:1 Year: 17 June,2021 Pages:584-594
Abstract
Wireless sensor network (WSN) is defined as a network of devices denoted as nodes that sense the environment and communicate the information gathered from the monitored field through wireless link. These tiny sensor nodes, which consist of sensing, data processing and communicating components, leverage the idea of sensor networks based on collaborative effort of a large number of nodes. Sensor networks also introduce severe resource constraints due to their lack of data storage and power. Both of these represent major obstacles to the implementation of traditional computer energy efficient techniques in a WSN. Energy consumption in WSNs is of paramount importance, which is demonstrated by the large number of algorithms, techniques and protocols that have been developed to save energy and extend the lifetime of the network. One way to cope with the energy challenge is to power down the radio transceiver during periods of inactivity. In particular, it has been shown that sensors operating at a two percentage duty cycle can achieve lifetimes of 6-month using two AA batteries. The traditional networks aim to achieve high quality of service (QoS), so the provisions or protocols must focus primarily on power conservation. They must have inbuilt trade-off mechanisms that give the end user the option of prolonging network lifetime at the cost of lower throughput or higher transmission delay. The critical path method (CPM) is an optimal research technique of analysis to find the critical path, i.e., the sequence of activities with the minimum energy in wireless sensor node. CPM uses activity oriented network estimate with fair degree of accuracy and control both time and energy in network.
Kewords
Energy consumption. WSN, CPM, QoS, Network
Reference
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