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Adaptive Routing Protocol with Power-Control Mechanism for Wireless Sensor Networks


Sandhya Rachamalla, Anitha Sheela Kancharla


Vol. 15  No. 2  pp. 38-45


Reliability, Power efficiency and timeliness are the critical issues in Wireless Sensor Networks (WSNs). The engineers must fulfill the QoS requirements imposed by the applications(users).To satisfy QoS metrics such as Reliability, timeliness and energy efficiency, these WSNs must overcome major obstacles such as dynamic environmental changes, limited energy/range/memory/ computational capabilities of nodes in WSNs. This paper proposes an adaptive routing protocol Power-control Delay- Aware Routing and MAC Protocol (PCDARM) for Wireless Sensor Networks. This protocol aims to route the packets along multiple paths with differential delay between these multiple paths bounded in a range and with energy constraints in forwarding packets between nodes of the network considering link reliability. This protocol achieves to reduce delay and energy consumption with increase in packet delivery ratio. It utilizes TDMA based slot allocation method for transmission of packets with sleep and wake-up cycles for the nodes in the network. It even reduces the latency of anode in accessing the medium with slot re-use mechanism. Numerical results show that the delay experienced by the packets is less in PCDARM. The results show that the proposed protocol also out performs DEAR protocol in terms of energy consumption and packet delivery ratio


Reliability, timeliness, differential delay, TDMA based slot allocation, slot re-use, Latency, Quality of Service, Wireless Sensor Networks