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In Remote Sensor Arrange deferral and vitality are vital limitations. It is watched that postponement, parcel conveyance proportion, vitality, rate transmission issues are created when a bundle is sent from sources to goal. This paper manages issues of postponement and vitality. Also, it deals with a Course choice paradigm which depends on least hub postponement and vitality utilization. At the point...
Data collection and transmission are the fundamental operations of Wireless Sensor Networks (WSNs). A key challenge in effective data collection and transmission is to schedule and synchronize the activities of the nodes with the global clock. This paper proposes the Bandwidth Efficient Hybrid Synchronization Data Aggregation Algorithm (BESDA) using spanning tree mechanism (SPT). It uses static sink...
Wireless Sensor Networks (WSNs) are used for monitoring and data collection purposes. A key challenge in effective data collection is to schedule and synchronize the activities of the nodes with global clock. This paper proposes the Synchronized Data Aggregation Algorithm (SDA) using spanning tree mechanism. It provides network-wide time synchronization for sensor network. In the initial stage algorithm...
In this paper the problem of delay tolerant message data transmission scheduling over Cognitive Radio (CR) enabled wireless networks is considered with special emphasis on high mobility users (vehicles). The proliferation of delay tolerant applications (social networking updates, emails, updates over the air to mention just a few) can drive efficient utilization of available spectrum by Secondary...
A large part of power dissipation in a system is generated by I/O devices. Increasingly these devices provide power saving mechanisms, inter alia to enhance battery life. While I/O device scheduling has been studied in the past for real-time systems, the use of energy resources by these scheduling algorithms may be improved. These approaches are crafted considering a very large overhead of device...
In order to achieve higher bandwidth and higher throughput, the carrier aggregation (CA) technique has been adopted by the specifications of 3GPP Release 10 for Long Term Evolution (LTE) advanced systems, where the user equipment (UE) may operate over up to 5 component carriers (CCs). On the other hand, 3GPP specifications also define a mechanism named discontinuous reception (DRX) in order to save...
IEEE 802.11 specifies a Power Saving Mode (PSM) in order to save the energy consumptions of mobile hosts. Following the standard of PSM, a number of studies [1–4] further discussed the wakeup/sleep scheduling of beacon intervals based on Quorum systems so that any communication pair of hosts has common awake intervals for data exchange. However, most of them did not take into consideration the fact...
The acoustic propagation speed under water poses significant challenges to the design of underwater sensor networks and their medium access control protocols. Similar to the air, scheduling transmissions under water have significant impacts on throughput, energy consumption, and reliability. Although the conflict scenarios and required scheduling constraints for deriving a collision-free schedule...
To reduce energy consumption and wastage, effective energy management at home is key and an integral part of the future Smart Grid. In this paper, we present the design and implementation of Green Home Service (GHS) for home energy management. Our approach addresses the key issues of home energy management in Smart Grid: a holistic management solution, improved device manageability, and an enabler...
In Wireless Sensor Network (WSN), one of the primary issues is energy conservation for extending network lifetime. Communication protocols for WSN help reduce the energy consumption via adopting sleep scheduling in the network. Random sleep scheduling is a desirable mechanism for its simplicity and steady duty cycle. However, the low duty cycle sleeping of nodes may destroy the connectivity of network,...
In wireless sensor networks, it is important to minimize energy consumption of the sensor nodes. Energy consumption of sensor nodes can be reduced explicitly by making sensors sleep when they are idle. In this paper, we consider a single wake-up periodic schedule in that the sensor wakes up in one slot out of k slots. This results in every sensor node having a duty cycle of 1/k on an average. However,...
The technique of multiple supply voltages and dynamic frequency has been explored as a possible energy-efficient strategy in CMOS circuits. In this paper, we consider the technique in the scheduling process which is the keys of high level synthesis. Given a schedule, a novel method is presented for the frequency assignment. The objective is to decrease the energy consumption as much as possible without...
We examine optimal strategies for querying a sensor network when energy efficiency and data freshness need to be balanced. We use statistical information about the nature of events monitored by the sensor network to develop good query schedules. For Poisson event arrivals, we develop an optimal scheduling strategy that is actually a periodic querying policy. For hyper exponential distribution of event...
The MEOW model-based design of an energy-optimized protocol stack addresses energy-aware functional design, optimization, simulation and code generation for WSNs. The goal is to satisfy functional and performance requirements, while maximizing battery lifetime. MEOW has been developed using the Matlab and Stateflow tools, which can be used in a model-based design environment to provide opportunities...
The mobility issue in grid environments has established new challenges to the research communities particularly in the areas of scheduling, adaptation, security and mobility. Especially, the resource allocation becomes more challenging when mobility is considered in grid environment. Hence it is necessary to consider the mobility of users along with the resource availability while scheduling the resources...
The author puts forward a ring-based routing approach, which reduces the load of the mechanism of the central node in a wireless mesh network. This routing mechanism can evenly allocate the load from the area close to the center of the network to the network perimeter area. This paper analyzes the ring-based routing method from the outlined principles, method descriptions and emulation of the method...
In this paper, we study the problem of reducing both the dynamic and leakage energy consumption for real-time systems with (m,k)-constraints, which require that at least m out of any k consecutive jobs of a task meet their deadlines. Two energy efficient scheduling approaches incorporating both dynamic voltage scheduling (DVS) and dynamic power down (DPD) are proposed in this paper. The first one...
Using network coding in wireless networks can increase throughput and reduce energy consumption. Recently there are many works focusing on how to utilize network coding to increase throughput, however there are few works considering the quality of service such as delay which is important to time critical applications. This paper focuses on network coding based broadcast scheduling problem in time...
Energy efficiency is very important for wireless sensor network (WSN). This paper presents an evolutionary self-learning scheduling approach (ESSA) to reduce energy consumption for WSN. The ESSA is based on a new proposed scheme - evolutionary Q-learning with continuous-action (EQC) approach, which combines an extension of Q-learning method with particle swarm optimization (PSO) algorithm. The action...
In the past few years, Ethernet Passive Optical Networks (EPONs) have rapidly gained large popularity in broadband access networks. However the current standard has no management protocols aiming at reducing power consumption. In this paper, we propose an Energy Management Mechanism (EMM) within the IEEE 802.3ah control scheme. The main idea is to switch Optical Network Units (ONUs) to sleep mode...
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