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Wireless Sensor Network (WSN) is widely used in IOT, military and environmental application. However, WSN is energy-constrained and the network nodes placed in hostile environment are hard to replace. Therefore, designing an energy-efficient routing algorithm is significant. Many solutions have been proposed to optimize energy consumption in conventional wireless sensor network, but they don't work...
Data center energy consumption has become one of the top concerns in designing and operating large-scale data centers as cloud service providers such as Amazon, Google, IBM and Microsoft have begun to establish more data centers in response to growing requests in clouds. In recent years, extensive efforts have been put into the research of reducing the energy consumption of servers. With the improvement...
The energy consumed by the networking resources to access the computational and storage resources is one of the factors to be considered in the cloud data center. In SDN, the network virtualization showcases the business in the network resource allocation when traffic is generated from the source host to the destination host. The network switches in the cloud based data centric network acquire the...
Maximizing network lifetime is a major objective for designing and deploying a wireless sensor network. Clustering sensor nodes is an effective topology control approach helping achieve this goal. In this paper, we present a new method to prolong the network lifetime based on the improved particle swarm optimization algorithm, which is an optimization method designed to select target nodes. The protocol...
The transfer of big data in various applications across high-performance networks (HPNs) in a national or international scope consumes a significant amount of energy on a daily basis. However, most existing bandwidth scheduling algorithms only consider traditional objectives, such as data transfer time minimization, and very limited efforts have been devoted to energy efficiency in HPNs. In this paper,...
The concept of energy-efficient networking is beginning to become popular in the past few years, gaining increasing importance. Besides the widespread sensitivity to ecological issues, such interest also stems from economic needs, since both energy costs and electrical requirements of telecom providers and Internet Service Providers' infrastructures around the world show a continuously growing trend...
Energy minimization is of great importance in wireless sensor networks in extending the battery lifetime. One of the key activities of nodes in a WSN is communication and the routing of their data to a centralized base-station or sink. Routing using the shortest path to the sink is not the best solution since it will cause nodes along this path to fail prematurely. We propose a cross-layer energy...
The main source of power supply for Wireless Sensor Networks are batteries, which are limited in life-cycle, thus limiting the sensors lifetime. Due this fact, the energy efficiency network is becoming the main concern to be addressed by researchers. This work aims to implement two theoretical energy-saving algorithms for WSN, DTNBOR and DTRNG. These algorithms choose their transmissions powers dynamically...
Energy saving in the Internet has become important since the massive new applications are increasing tremendously, along with their energy consumption. In this paper we propose an energy efficient algorithm based on multi-topology routing. Since traffic flow dynamically changed in actual IP network scenarios, the proposed algorithm has to adapt the network energy consumption to daily traffic scenarios...
Localized topology control is attractive for generating reduced topologies with desirable features such as sparser connectivity and reduced transmit powers. In this paper, we propose an energy efficient localized topology control algorithm called X-LMST in order to achieve prolonged network lifetime. In X-LMST, each node is required to keep its one-hop neighborhood topology. Moreover, in X-LMST, a...
In this paper, we propose an algorithm which computes the energy-efficient P2MP-path for MiDORi network rapidly. By computer simulation, proposed algorithm can calculate within 3 seconds and reduce 30kW in large scale network.
The energy consumption of backbone networks has become a primary concern for network operators and regulators due to the pervasive deployment of wired backbone networks to meet the requirements of bandwidth-hungry applications. While traditional optimization of IGP link weights has been used in IP based load-balancing operations, in this paper we introduce a novel link weight setting algorithm, the...
We consider the problem of minimizing the power consumption of Internet backbone networks by means of power aware design and auto configuration of Points of Presence (PoPs). We show that the problem of achieving a power-optimal PoP design under general traffic demands is NP-Hard. The problem is NP-Hard even when the traffic demands are correlated i.e. traffic demands across different source-destination...
Energy efficiency is an important consideration in a battery powered wireless sensor network (WSN). We propose an energy efficient Distributed Power Management algorithm with Directional Antenna (DDISPOW) that adaptively manages nodes' power in a dynamic wireless network to preserve network connectivity and reduce interference cooperatively. DDISPOW, with adequate transmit power, is capable of providing...
Energy efficiency, scalability and robustness are key features of Ad-hoc and Wireless Sensor Networks and the use of decentralized algorithms is of practical importance in such scenarios. A method for node localization is proposed by solving a nonlinear least-squares problem in a distributed fashion. For that purpose we propose a Gauss-Newton algorithm with embedded consensus that requires only local...
Topology control algorithms in wireless Ad Hoc networks can be divided into two categories according to optimization goal, they are geometry structure and energy efficiency. The former constructs the network topology on the basis of geometry structure; the latter focuses on the energy efficiency of network. Based on abundant literature, this paper summarizes the recent situation of Ad Hoc network...
Wireless Sensor Networks has recently become an attractive research topic due to the rapidly growing field of applications. This paper focuses on prolonging network lifetime by investigating different node deployments including both geometric and uniform. Geometric distributions resulted in a 35.6% increase in lifetime as opposed to random distributions. Furthermore, different sink locations were...
The energy efficiency is critical for application of wireless sensor networks, since it is a main precondition for their long-live functionality, small modification costs and reliability. This paper deals with the placement of wireless nodes based on the modeling of radio wave propagation. The methods are realized in a planning tool CANDY Wireless Site Finder that provides optimized topologies of...
In this paper, we propose a new dynamic energy efficient routing scheme for wireless sensor networks. Based on the dynamic reconfiguration approach, the proposed scheme can provide network adaptability while enhancing the network efficiency. In addition, our distributed control paradigm has low complexity, making it practical for real sensor network management. Simulation results indicate the superior...
Clustering offers a kind of hierarchical organization to provide scalability and basic performance guarantee by partitioning the network into disjoint groups of nodes. In this paper an energy efficient clustering algorithm is proposed under large-scale mobile sensor networks scenario. In the initial cluster formation phase, our proposed scheme features a simple execution process, which has a time...
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