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Topology control algorithm for IEEE 802.15.4 based single sink wireless sensor networks
Jardosh S., Ranjan P.
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IEEE 802.15.4 is a communication standard specifically designed, targeting resource constrained networks. IEEE 802.15.4 provides MAC and Physical layer specifications for low power personal area networks like wireless sensor networks. IEEE 802.15.4 is designed considering the energy concerns of network devices normally called sensor nodes in wireless sensor networks. As per the standard network nodes are categorized as Full Function Device (FFD) nodes or Reduced Function Device (RFD). Here FFD spends more time in active state and consumes more energy while RFD spends more time in sleep state and consumes less energy compared to FFD. Objective of topology control mechanism is to reduce the number of active devices without compromising network functionality. We have proposed a distributed, multi-point relay based topology control algorithm to construct a Connected Dominating Set (CDS) for the randomly deployed network nodes. CDS restricts the number of active nodes that improves the overall networks energy utilization and extends the network life. © 2011 IEEE.
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