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This paper considers multi-hop cellular networks in which nodes use accumulation for cooperative broadcasting in order to save total energy with low delay. Our purpose is to build up Green Cellular Networks (GCN) which represent the trend of Next-Generation Networking (NGN) and cater for people's demand for health and energy savings. Therefore, we assume a radiation and harmful region and show that...
Several applications in wireless sensor networks require a bidirectional communication between the sensing nodes and the sink. A number of relay nodes is used to achieve this bidirectional communication. The relay nodes adjust their communication range in order to consume less energy, constructing an asymmetric network with unidirectional links. In this paper, we examine the case where a bidirectional...
An important problem in Wireless Sensor Networks (WSN) is the occurrence of failures that lead to the disconnection of parts of the network, compromising the final results achieved by the WSN operation. A way to overcome such problem is to provide a reliable connection to support the connectivity via other types of nodes that communicate with the sensor nodes. This paper proposes the usage of a network...
Rings overlay is a class of multi-path routing structure for wireless sensor networks that exploits the broadcast nature of wireless communication to cope with communication failures. While the rings overlay aims to create multiple propagation paths for sensor nodes to transport data, the sensor nodes in the ring next to the base station inherently have only a single propagation path to the base station...
For large-scale wireless sensor networks (WSNs), a three-layer topology architecture and an algorithm of topology control for its key communication layer are proposed in this paper. In the algorithm, the base station of the network leads the ring periodically to discover the minimum power cost links from base station to each sinks, and a minimum spanning tree will be constructed. This tree will be...
Wireless sensor networks are increasingly utilized in large-scale sensing applications. In this paper, we propose a novel wireless sensor network model based on simple assumption of wireless sensor network. The model implies some useful result: the number of parent nodes is determined by communication radius and average distance of sensor nodes; the communication cost caused by multi-path is very...
Higher-powered relay nodes have been proposed as cluster heads in hierarchical sensor networks to increase the network connectivity, coverage and lifetime. Determining an appropriate placement scheme of the relay nodes that ensures adequate coverage and connectivity, while using a minimum number of relay nodes, is an important design problem and a significant amount of work has been done in this area...
Two-tiered sensor networks, where higher-powered relay nodes are used as cluster heads, have been proposed recently for designing sensor networks. Assigning sensor nodes to clusters, in an energy efficient way, is known to improve the lifetime of such networks. In this paper we have proposed an efficient distributed algorithm for assigning sensor nodes to clusters in two-tiered networks, using both...
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...
For wireless sensor networks in LEACH algorithm inter-cluster single-hop communication can not meet the requirements of network expansion of the problem, a multi-hop communication routing algorithm called CMRA is proposed. The algorithm uses the node communication energy consumption model derived network optimal cluster number per round under multi-hop communication; by analyzing the network total...
In sensor networks, data traffic is concentrated towards a small number of base stations, and those nodes close to the base station have to relay large amount of data for the rest of the network. This would deplete the batteries of these nodes very quickly, and reduce the network lifetime. In order to alleviate this problem, a novel solution is proposed in this paper, where the transmission powers...
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