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Sensor nodes of wireless sensor networks are placed in observation areas and transmit data to the observer by using multi-hop communication between nodes. Because these nodes are small and have a limited power supply, they must save power in order to prolong the networkpsilas lifetime.In our previous work, we proposed a power saving technique called HGAF (hierarchical geographic adaptive fidelity)that...
Summary form only given. In hierarchical two-tiered sensor networks, higher-powered relay nodes have recently been proposed to be used as cluster heads for designing scalable sensor networks.The assignment of sensor nodes to clusters in an energy-efficient way is known to improve the lifetime of such networks. In this paper we have proposed two efficient distributed algorithms for assigning sensor...
Network lifetime is one of the most important parameters in ad-hoc wireless networks, and it is not only constrained by the battery capacity of the nodes in the networks but also by the energy efficient operation of the nodes. This paper evaluates energy consumption and network lifetime in a rectangular network model based on the Geographical Adaptive Fidelity (GAF) topology management protocol. We...
While wireless sensor networks have important applications in many fields, the limited battery life and high deployment cost pose serious challenges. One way to maintain good coverage and extend the network lifetime is to deploy sensors in high density and schedule them to sleep between active cycles. In this paper, we propose an algorithm to schedule the sensors to sleep based on the area of overlapped...
Ad hoc network is usually built up by battery-powered nodes, so the energy is limited, and the networkpsilas lifetime often depends on several hot nodes. This paper puts forward a routing protocol AODV-TEB (ad hoc on-demand distance vector - traffic-energy balanced) to solve this problem. In AODV-TEB, each node calculated its traffic load per second, and got its left battery, then formed a nonlinear...
Wireless sensor network (WSN) comprises of a large number of small sensor nodes which are capable of sensing data processing and communicating. As we deal with a large number of sensors traditional routing protocols proposed for MANETs are not suitable for wireless sensor networks. In this paper we present a leveled meshed multipath routing (LMMPR) protocol. We first present the leveling scheme where...
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