Bibliographies thématiques / Power-aware simulator

Littérature scientifique sur le sujet « Power-aware simulator »

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Publié le 11 mars 2023

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Articles de revues sur le sujet "Power-aware simulator"

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Chéour, Rym, Mohamed Wassim Jmal, Olfa Kanoun et Mohamed Abid. « Evaluation of simulator tools and power‐aware scheduling model for wireless sensor networks ». IET Computers & ; Digital Techniques 11, no 5 (9 août 2017) : 173–82. http://dx.doi.org/10.1049/iet-cdt.2017.0003.

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Elewely, Dalia, Marwa Areed et Hesham Ali. « A proposed routing scheme for power reduction in wireless networks ». International Journal of Engineering & ; Technology 3, no 1 (29 décembre 2013) : 20. http://dx.doi.org/10.14419/ijet.v3i1.1111.

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Ad-hoc networks consist of a set of mobile nodes with a restricted power supply resources that can communicate with each other without any established infrastructure or centralized administration. The loss of some nodes may cause significant topological changes, undermine the network operation, and affect the lifetime of the network. This paper discusses the energy consumption problem and summaries the existing power saving techniques in ad-hoc wireless networks. The main objective of this paper is to introduce a new power aware multi-path node disjoint routing scheme based on the Dynamic Source Routing protocol (DSR), which can prolong MANETs lifetime, reduce routing delay and increase the reliability of the packets reaching its destination. Therefore, a comprehensive study of DSR protocol has been drawn using NS-2 simulator, to evaluate the performance of DSR as a routing strategy and investigate its efficiency in saving wireless networks resources, as a prelude to avoid its performance shortcomings in our proposed routing scheme. Keywords: Power aware protocol, node disjoint, network simulation 2, multipath routing, Dsr protocol, ad-hoc network.
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Dwivedi, Rajendra Kumar, et Rakesh Kumar. « An Energy and Fault Aware Mechanism of Wireless Sensor Networks Using Multiple Mobile Agents ». International Journal of Distributed Systems and Technologies 11, no 3 (juillet 2020) : 22–41. http://dx.doi.org/10.4018/ijdst.2020070102.

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Wireless sensor networks find several applications in hard-to-reach areas. As sensors have limited battery power, many energy aware protocols based on negotiation, clustering, and agents have been developed to increase lifetime of the network. This article finds limitation with some multi-agent-based protocols as they place the sink node at the centre of the monitoring region which is quite difficult in hard-to-reach areas. Therefore, a multi-agent-based energy and fault-aware protocol for hard-to-reach territories (MAHT) is proposed which uses technique of impact factor to identify the high power capability of the central node and dynamic itinerary planning to make the protocol fault tolerant. Its agent migration technique results in improvement ofn energy efficiency, task completion time and network lifetime. MAHT is simulated using Castalia simulator and the impact of payload size, network size, node failures, etc., on various performance metrics is analysed. The proposed protocol found outperforming over the existing ones.
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Zhao, Huatao, Xiao Luo, Chen Zhu, Takahiro Watanabe et Tianbo Zhu. « Behavior-aware cache hierarchy optimization for low-power multi-core embedded systems ». Modern Physics Letters B 31, no 19-21 (27 juillet 2017) : 1740067. http://dx.doi.org/10.1142/s021798491740067x.

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In modern embedded systems, the increasing number of cores requires efficient cache hierarchies to ensure data throughput, but such cache hierarchies are restricted by their tumid size and interference accesses which leads to both performance degradation and wasted energy. In this paper, we firstly propose a behavior-aware cache hierarchy (BACH) which can optimally allocate the multi-level cache resources to many cores and highly improved the efficiency of cache hierarchy, resulting in low energy consumption. The BACH takes full advantage of the explored application behaviors and runtime cache resource demands as the cache allocation bases, so that we can optimally configure the cache hierarchy to meet the runtime demand. The BACH was implemented on the GEM5 simulator. The experimental results show that energy consumption of a three-level cache hierarchy can be saved from 5.29% up to 27.94% compared with other key approaches while the performance of the multi-core system even has a slight improvement counting in hardware overhead.
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Lin, Cheng-Yen, Chung-Wen Huang, Chi-Bang Kuan, Shi-Yu Huang et Jenq-Kuen Lee. « The Design and Experiments of A SID-Based Power-Aware Simulator for Embedded Multicore Systems ». ACM Transactions on Design Automation of Electronic Systems 20, no 2 (2 mars 2015) : 1–27. http://dx.doi.org/10.1145/2699834.

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Rahiman, P. F. Khaleelur, et V. S. Jayanthi. « Low Power Adder Based Auditory Filter Architecture ». Scientific World Journal 2014 (2014) : 1–6. http://dx.doi.org/10.1155/2014/709149.

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Cochlea devices are powered up with the help of batteries and they should possess long working life to avoid replacing of devices at regular interval of years. Hence the devices with low power consumptions are required. In cochlea devices there are numerous filters, each responsible for frequency variant signals, which helps in identifying speech signals of different audible range. In this paper, multiplierless lookup table (LUT) based auditory filter is implemented. Power aware adder architectures are utilized to add the output samples of the LUT, available at every clock cycle. The design is developed and modeled using Verilog HDL, simulated using Mentor Graphics Model-Sim Simulator, and synthesized using Synopsys Design Compiler tool. The design was mapped to TSMC 65 nm technological node. The standard ASIC design methodology has been adapted to carry out the power analysis. The proposed FIR filter architecture has reduced the leakage power by 15% and increased its performance by 2.76%.
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Sankar, S., et P. Srinivasan. « Energy and Load Aware Routing Protocol for Internet of Things ». International Journal of Advances in Applied Sciences 7, no 3 (1 août 2018) : 255. http://dx.doi.org/10.11591/ijaas.v7.i3.pp255-264.

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<p>Maximizing the network lifetime is one of the major challenges in Low Power and Lossy Networks (LLN). Routing plays a vital role in it by minimizing the energy consumption across the networks through the efficient route selection for data transfer. IPv6 Routing Protocol for Low Power and Lossy Networks (RPL) is a IETF standardized IPv6 routing protocol for LLN. In this paper, we propose Energy and Load aware RPL (EL-RPL) protocol, which is an enhancement of RPL protocol. It uses a composite metric, calculated based on expected transmission count (ETX), Load and battery depletion index (BDI), for the route, selection. The COOJA simulator is used for performance evaluation. EL-RPL is compared with other similar protocols RER(BDI) RPL and fuzzy logic based RPL (OF-FL RPL). The simulation result shows that the EL-RPL improves the network lifetime by 8-12% and packet delivery ratio 2-4%.</p>
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Sankar, S., Ramasubbareddy Somula, R. Lakshmana Kumar, P. Srinivasan et M. Amala Jayanthi. « Trust-Aware Routing Framework for Internet of Things ». International Journal of Knowledge and Systems Science 12, no 1 (janvier 2021) : 48–59. http://dx.doi.org/10.4018/ijkss.2021010104.

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Establishing security in internet of things (IoT) is a critical challenge, as it is connected to the network's extremely resource-constrained devices. The RPL is a standard routing protocol for IoT. It is well-suited for low power and lossy networks (LLN). The RPL provides little security in the IoT network against various attacks. However, one needs to strengthen the security concern in RPL. So, this paper proposes a trust-aware, energy-based reliable routing (TAER-RPL) for IoT to enhance security among network nodes. The TAER-RPL is taken into account the routing metrics, namely trust, ETX, RER to pick the optimal parent for data transmission. The simulation is conducted in COOJA simulator. TAER-RPL's efficiency is compared with SecTrust-RPL and RPL. The TAER-RPL increases the lifespan of the network by 15%.
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Sharad, Er, Savita Shiwani et Manish Suroliya. « Energy aware approach for security and power optimization in advance wireless networks of internet of things (IoT) ». International Journal of Engineering & ; Technology 7, no 2.4 (10 mars 2018) : 34. http://dx.doi.org/10.14419/ijet.v7i2.4.10038.

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In the recent years, the advance wireless networks and Internet of Things (IoT) are becoming very prominent in assorted domains. In the traffic system, the problem of congestion control is very common, and it is classically handled by the global positioning systems by the drivers as well as traffic administrative authorities. But as the traffic density is increasing day by day, it is becoming difficult to handle and view all the possibilities in the prospective traffic area where the driver is willing to move. Moreover, the problem of security and integrity is also increasing rapidly as there are number of attacks in VANET and GPS systems being used by the crackers by sending the malicious code or fake packets. Ubiquitous computing is one of the recent technologies that is in the phase of implementation under Internet of Things (IoT). In this research manuscript, the approach to integrate the dynamic key exchange with the Elephant Herd Optimization (EHO) is presented to achieve the higher degree of energy optimization and overall lifetime of the network communication. The key concept of the cluster head shuffling using EHO and inner modules of key exchange are simulated in Contiki-Cooja that is open source simulator for advance wireless networks.
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Asokan, R., A. M. Natarajan et C. Venkatesh. « Quality-of-Service Routing Using Path and Power Aware Techniques in Mobile Ad Hoc Networks ». Journal of Computer Systems, Networks, and Communications 2008 (2008) : 1–7. http://dx.doi.org/10.1155/2008/160574.

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Mobile ad hoc network (MANET) is a collection of wireless mobile hosts dynamically forming a temporary network without the aid of any existing established infrastructure. Quality of service (QoS) is a set of service requirements that needs to be met by the network while transporting a packet stream from a source to its destination. QoS support MANETs is a challenging task due to the dynamic topology and limited resources. The main objective of this paper is to enhance the QoS routing for MANET using temporally ordered routing algorithm (TORA) with self-healing and optimized routing techniques (SHORT). SHORT improves routing optimality by monitoring routing paths continuously and redirecting the path whenever a shortcut path is available. In this paper, the performance comparison of TORA and TORA with SHORT has been analyzed using network simulator for various parameters. TORA with SHORT enhances performance of TORA in terms of throughput, packet loss, end-to-end delay, and energy.
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Thèses sur le sujet "Power-aware simulator"

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MINAKOV, IVAN. « Power-Aware Design Methodology for Wireless Sensor Networks ». Doctoral thesis, Università degli studi di Trento, 2012. http://hdl.handle.net/11572/328000.

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Energy consumption is one of the most constrained requirements for the development and implementation of wireless sensor networks. Many design aspects affect energy consumption, ranging from the hardware components, operations of the sensors, the communication protocols, the application algorithms, duty cycles and others. Efficient simulation tool can be used to estimate the contribution to energy consumption of all of these factors, and significantly decrease the efforts and time spent to choose the right solution that fits best to a particular application. In this work we present design space exploration methodology for ultra low power embedded systems and wireless sensor networks. The methodology takes inspiration from Platform Based Design (PBD) paradigm and defines separate abstraction layers for all system aspects that directly contribute power consumption of target applications. To support presented methodology we built a SystemC-based discrete event simulation framework, called “PASES”, that provides power-aware simulation and analysis of wireless sensor networks and sensor nodes. Its modular architecture allows flexible, extensible and rapid modeling of custom HW platforms, SW application models, communication protocols, energy sources, environment dynamics and nodes mobility. Based on the feedback gained from PASES, the optimal and energy-efficient solution for the specific project of interest can be selected. The proposed approach improves state-of-the-art by providing fast and reliable power-aware system-level exploration for a wide range of custom applications
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Alam, Muhammad Mahtab. « Power-Aware adaptive techniques for wireless sensor networks ». Thesis, Rennes 1, 2013. http://www.theses.fr/2013REN1S049/document.

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Les Réseaux de capteurs sans fil (WSN) sont une technologie émergente avec des applications potentielles dans divers domaines de la vie quotidienne, tels que la surveillance structurelle et environnementale, la médecine, la surveillance militaire, les explorations robotisées, etc. Les nœuds de capteurs doivent fonctionner pendant une longue période avec des batteries capacité limitée, par conséquent le facteur plus important dans les WSN est la consommation d'énergie. Dans cette thèse, nous proposons des techniques d'optimisation algorithmiques dynamiques, et adaptative pour la réduction de l'énergie. Tout d'abord, un modèle énergétique précis est présenté. Ce modèle repose sur des mesures réelles de courant consommé pour différents scénarios qui peuvent se produire lors de la communication entre les nœud. Il en est conclu que la couche MAC joue un rôle essentiel dans la réduction de l'énergie consommée. Ensuite, un protocole MAC dynamique est présenté. Il adapte de manière dynamique l’intervalle de réveil des nœuds de capteurs à partir d’une estimation du trafic. L’algorithme adaptatif modélisé de façon heuristique pour comprendre le comportement de convergence des paramètres algorithmiques. Le protocole est appliqué sur des réseaux de capteurs corporels et il surclasse les autres protocoles MAC en termes de latence ainsi que de consommation d'énergie ce qui permet donc d'augmenter la durée de vie de trois à six fois. Enfin, une technique basée sur l’optimisation adaptative de la puissance d'émission radio est appliquée sur des canaux variant dans le temps. La puissance de sortie est réglée dynamiquement au meilleur niveau de puissance selon l’état du canal, ce qui diminue la consommation d’un facteur deux
Wireless Sensor Networks (WSN) are a fast emerging technology with potential applications in various domains of daily-life, such as structural and environmental monitoring, medicine, military surveillance, robotic explorations etc. WSN devices are required to operate for a long time with limited battery capacity, therefore, the most important constraint in WSN is energy consumption. In this thesis, we propose algorithmic-level dynamic and adaptive optimization techniques for energy reduction in WSN. First, an accurate energy model is presented. This model relies on real-time power measurements of various scenarios that can occur during communication between sensor nodes. It is concluded that MAC layer plays a pivotal role for energy reduction. Then, a traffic-aware dynamic MAC protocol is presented which dynamically adapts the wake-up schedule of sensor nodes through traffic estimation. An adaptive algorithm is designed for this purpose that is heuristically modeled to understand the convergence behavior of algorithmic parameters. The proposed protocol is applied to body area networks and it outperforms other low-power MAC protocols in terms of latency as well as energy consumption and consequently increases the lifetime from three to six times. Finally, an SNR-based adaptive transmit power optimization technique is applied under time-varying channels. The output power is dynamically tuned to best power level under slow varying channel, which results in an average gain by two times
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YAN, JIANPING. « A TILED FPGA ARCHITECTURE FOR POWER-AWARE COMPUTATIONS ». University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1150126839.

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Wang, Guoqiang. « MAC LAYER AND ROUTING PROTOCOLS FOR WIRELESS AD HOC NETWORKS WITH ASYMMETRIC LINKS AND PERFORMANCE EVALUATION STUDIES ». Doctoral diss., University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3402.

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In a heterogeneous mobile ad hoc network (MANET), assorted devices with different computation and communication capabilities co-exist. In this thesis, we consider the case when the nodes of a MANET have various degrees of mobility and range, and the communication links are asymmetric. Many routing protocols for ad hoc networks routinely assume that all communication links are symmetric, if node A can hear node B and node B can also hear node A. Most current MAC layer protocols are unable to exploit the asymmetric links present in a network, thus leading to an inefficient overall bandwidth utilization, or, in the worst case, to lack of connectivity. To exploit the asymmetric links, the protocols must deal with the asymmetry of the path from a source node to a destination node which affects either the delivery of the original packets, or the paths taken by acknowledgments, or both. Furthermore, the problem of hidden nodes requires a more careful analysis in the case of asymmetric links. MAC layer and routing protocols for ad hoc networks with asymmetric links require a rigorous performance analysis. Analytical models are usually unable to provide even approximate solutions to questions such as end-to-end delay, packet loss ratio, throughput, etc. Traditional simulation techniques for large-scale wireless networks require vast amounts of storage and computing cycles rarely available on single computing systems. In our search for an effective solution to study the performance of wireless networks we investigate the time-parallel simulation. Time-parallel simulation has received significant attention in the past. The advantages, as well as, the theoretical and practical limitations of time-parallel simulation have been extensively researched for many applications when the complexity of the models involved severely limits the applicability of analytical studies and is unfeasible with traditional simulation techniques. Our goal is to study the behavior of large systems consisting of possibly thousands of nodes over extended periods of time and obtain results efficiently, and time-parallel simulation enables us to achieve this objective. We conclude that MAC layer and routing protocols capable of using asymmetric links are more complex than traditional ones, but can improve the connectivity, and provide better performance. We are confident that approximate results for various performance metrics of wireless networks obtained using time-parallel simulation are sufficiently accurate and able to provide the necessary insight into the inner workings of the protocols.
Ph.D.
School of Electrical Engineering and Computer Science
Engineering and Computer Science
Computer Science PhD
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Baati, Khaled. « Stratégie de réduction des cycles thermiques pour systèmes temps-réel multiprocesseurs sur puce ». Phd thesis, Université Nice Sophia Antipolis, 2013. http://tel.archives-ouvertes.fr/tel-00947611.

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L'augmentation de la densité des transistors dans les circuits électroniques conduit à une augmentation de la consommation d'énergie induisant des phénomènes thermiques plus complexes à maitriser. Dans le cas de systèmes embarqués en environnement où la température ambiante varie dans des proportions importantes (automobile par exemple), ces phénomènes peuvent conduire à des problèmes de fiabilité. Parmi les mécanismes de défaillance observés, on peut citer les cycles thermiques (CT) qui induisent des déformations dans les couches métalliques de la puce pouvant conduire à des fissurations. L'objectif de la thèse est de proposer pour des architectures de type multiprocesseur sur puce une technique de réduction des CT subis par les processeurs, et ce en respectant les contraintes temps réel des applications. L'exemple du circuit MPC5517 de Freescale a été considéré. Dans un premier temps un modèle thermique de ce circuit a été élaboré à partir de mesures par une caméra thermique sur ce circuit décapsulé. Un environnement de simulation a été mis en oeuvre pour permettre d'effectuer simultanément des analyses thermiques et d'ordonnancement de tâches et mettre en évidence l'influence de la température sur la puissance dissipée. Une heuristique globale pour réduire à la fois les CT et la température maximale des processeurs a été étudiée. Elle tient compte des variations de la température ambiante et se base sur les techniques DVFS et DPM. Les résultats de simulation avec les algorithmes d'ordonnancement globaux RM, EDF et EDZL et avec différentes charges processeur (sur un circuit type MPC5517 et un UltraSparc T1) illustrent l'efficacité de la technique proposée.
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Prabhu, Subodh. « Ocin_tsim - A DVFS Aware Simulator for NoC Design Space Exploration and Optimization ». 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-7798.

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Networks-on-Chip (NoCs) are a general purpose, scalable replacement for shared medium wired interconnects offering many practical applications in industry. Dynamic Voltage Frequency Scaling (DVFS) is a technique whereby a chip?s voltage-frequency levels are varied at run time, often used to conserve dynamic power. Various DVFSbased NoC optimization techniques have been proposed. However, due to the resources required to validate architectural decisions through prototyping, few are implemented. As a result, designers are faced with a lack of insight into potential power savings or performance gains at early architecture stages. This thesis proposes a DVFS aware NoC simulator with support for per node power-frequency modeling to allow fine-tuning of such optimization techniques early on in the design cycle. The proposed simulator also provides a framework for benchmarking various candidate strategies to allow selective prototyping and optimization. As part of the research, DVFS extensions were built for an existing NoC performance simulator and released for public use. This thesis presents some of the preliminary results from our simulator that show the average power consumed per node for all the benchmarks in SPLASH 2 benchmark suite [74] to be quite similar to each other. This thesis also serves as a technical manual for the simulator extensions. Important links for downloading and using the simulator are provided at the end of this document in Appendix C.
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Chapitres de livres sur le sujet "Power-aware simulator"

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March, José Luis, Julio Sahuquillo, Houcine Hassan, Salvador Petit et José Duato. « Extending a Multicore Multithread Simulator to Model Power-Aware Hard Real-Time Systems ». Dans Algorithms and Architectures for Parallel Processing, 444–53. Berlin, Heidelberg : Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-13136-3_45.

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Liao, Weiping, et Lei He. « Coupled Power and Thermal Simulation with Active Cooling ». Dans Power-Aware Computer Systems, 148–63. Berlin, Heidelberg : Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/978-3-540-28641-7_11.

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Khondkar, Progyna. « Power Aware Dynamic Simulation Coverage ». Dans Low-Power Design and Power-Aware Verification, 109–30. Cham : Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-66619-8_6.

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Khondkar, Progyna. « UPF Based Power Aware Dynamic Simulation ». Dans Low-Power Design and Power-Aware Verification, 81–108. Cham : Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-66619-8_5.

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Shin, Dongkun, Woonseok Kim, Jaekwon Jeon, Jihong Kim et Sang Lyul Min. « SimDVS : An Integrated Simulation Environment for Performance Evaluation of Dynamic Voltage Scaling Algorithms ». Dans Power-Aware Computer Systems, 141–56. Berlin, Heidelberg : Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/3-540-36612-1_10.

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Ahuja, Sumit, Avinash Lakshminarayana et Sandeep Kumar Shukla. « High Level Simulation Directed RTL Power Estimation ». Dans Low Power Design with High-Level Power Estimation and Power-Aware Synthesis, 93–103. New York, NY : Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4614-0872-7_8.

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Ahuja, Sumit, Avinash Lakshminarayana et Sandeep Kumar Shukla. « System Level Simulation Guided Approach for Clock-Gating ». Dans Low Power Design with High-Level Power Estimation and Power-Aware Synthesis, 143–56. New York, NY : Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4614-0872-7_12.

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Kishani, Mostafa, Amirali Baniasadi et Hossein Pedram. « Using Silent Writes in Low-Power Traffic-Aware ECC ». Dans Integrated Circuit and System Design. Power and Timing Modeling, Optimization, and Simulation, 180–92. Berlin, Heidelberg : Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-24154-3_19.

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Sassolas, Tanguy, Nicolas Ventroux, Nassima Boudouani et Guillaume Blanc. « A Power-Aware Online Scheduling Algorithm for Streaming Applications in Embedded MPSoC ». Dans Integrated Circuit and System Design. Power and Timing Modeling, Optimization, and Simulation, 1–10. Berlin, Heidelberg : Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-17752-1_1.

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Mbarek, Ons, Alain Pegatoquet et Michel Auguin. « A Methodology for Power-Aware Transaction-Level Models of Systems-on-Chip Using UPF Standard Concepts ». Dans Integrated Circuit and System Design. Power and Timing Modeling, Optimization, and Simulation, 226–36. Berlin, Heidelberg : Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-24154-3_23.

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Actes de conférences sur le sujet "Power-aware simulator"

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Nikolic, Borislav, Muhammad Ali Awan et Stefan M. Petters. « SPARTS : Simulator for Power Aware and Real-Time Systems ». Dans 2011 IEEE 10th International Conference on Trust, Security and Privacy in Computing and Communications (TrustCom). IEEE, 2011. http://dx.doi.org/10.1109/trustcom.2011.137.

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Lin, Cheng-Yen, Po-Yu Chen, Chun-Kai Tseng, Chung-Wen Huang, Chia-Chieh Weng, Chi-Bang Kuan, Shih-Han Lin, Shi-Yu Huang et Jenq-Kuen Lee. « Power aware SID-based simulator for embedded multicore DSP subsystems ». Dans the eighth IEEE/ACM/IFIP international conference. New York, New York, USA : ACM Press, 2010. http://dx.doi.org/10.1145/1878961.1878981.

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Morganti, Lucia, Elena Corni, Andrea Ferraro, Daniele Cesini, Daniele D'Agostino et Ivan Merelli. « Implementing a Space-Aware Stochastic Simulator on Low-Power Architectures : A Systems Biology Case Study ». Dans 2017 25th Euromicro International Conference on Parallel, Distributed and Network-based Processing (PDP). IEEE, 2017. http://dx.doi.org/10.1109/pdp.2017.55.

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Ajayi, E. A., H. Idris, W. D. Daniel et U. C. Arinze. « Quality of Service (Qos) Aware Power Saving Scheme in IEEE 802.16e Networks ». Dans 27th iSTEAMS-ACity-IEEE International Conference. Society for Multidisciplinary and Advanced Research Techniques - Creative Research Publishers, 2021. http://dx.doi.org/10.22624/aims/isteams-2021/v27p3.

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Wireless telecommunication networks have become fundamental to our daily activities. Today, people have access to at least one type of wireless telecommunication network with Mobile Stations (MS) supporting multiple applications that consume more battery power; as well as a constant increase in multimedia applications that possess a critical challenge in efficient battery management. MSs are battery powered devices with limited lifetime. An efficient management of the battery will extend its lifetime before recharging exercise is conducted. World Wide Interoperability for Microwave Access (WiMAX), is design to Supports Higher Bandwidth with different traffic classes support for Power Management. Due to the mobility Characteristics introduced in WiMAX, power savings became an important problem; Since MS has limited superimpose life that requires recharging exercise when the battery life is depleted. Thus, Battery Lifetime Aware Power Saving Scheme (BLAPS) and an Adaptive Power Saving Scheme were proposed to extend the Battery Life, but the first scheme resulted in frequent transition to listening mode which led to waste of energy. While the former has higher energy consumption resulting to poor QoS that degrades the overall performance of MS. Hence, a Quality of Service (QoS) Aware Power Saving Scheme is proposed to improve the QoS. The scheme introduced a Modified minimum (Tmin) and Maximum (Tmax) sleep intervals in order to enhance the parameters of the variant schemes. In addition, the scheme also introduced a modified sleep window as well as QoS Aware algorithm that enable the adjustments of the sleep Parameters more appropriately in order to minimize frequent Transition to listening mode while improving efficiency. Finally, a state transition diagram was also developed. The proposed scheme was evaluated using MATLAB simulator; the results proved that the proposed QoS Aware Scheme has superior performance in terms of consumption rate and response delay respectively. Keywords: Battery Life, Power Consumption, Response Delay.
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Marques, Vinícius De Figueiredo, et Janine Kniess. « Mobility Aware RPL (MARPL) : Providing Mobility Support for RPL Protocol ». Dans XXXVII Simpósio Brasileiro de Redes de Computadores e Sistemas Distribuídos. Sociedade Brasileira de Computação - SBC, 2019. http://dx.doi.org/10.5753/sbrc.2019.7361.

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Low Power and Lossy Networks (LLNs) is a common type of wireless network in IoT applications. LLN communication patterns usually requires an efficient routing protocol. The IPv6 Routing Protocol for Low-Power and Lossy Network (RPL) is considered to be a possible standard routing protocol for LLNs. However, RPL was developed for static networks and node mobility decreases RPL overall performance. These are the purposes of the Mobility Aware RPL (MARPL), presented in this paper. MARPL provides a mobility detection mechanism based on neighbor variability. Performance evaluation results on the Cooja Simulator confirm the effectiveness of MARPL regarding link disconnection prevention, packet delivery rate and fast mobile node topology reconnection with low overhead impact when compared to other protocols.
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Ulrich, Thomas, Ronald Boring et Roger Lew. « Studying Control Room Operations on a Shoestring Budget - Reflections on the Rancor Microworld ». Dans 13th International Conference on Applied Human Factors and Ergonomics (AHFE 2022). AHFE International, 2022. http://dx.doi.org/10.54941/ahfe1001488.

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As the U.S. continues to develop and mature advanced reactor designs, the nuclear industry is becoming increasingly aware of the need for good human factors are to ensure safe, reliable, effective, and economical concept of operations. Advanced reactor designs aim to reduce staffing, and significant operational costs, by adopting high levels of automation. The highly automated control system designs must be informed with human factors and human reliability data. The proposed concepts of operations are unlike the current, largely manual, concept of operations found in operating nuclear power plants. Human performance data collection has proven difficult to obtain for existing nuclear power plants. Human factors researchers working on advanced reactor designs will encounter these same fundamental challenges and more. The novel concept of operations and accompanying human-system interfaces are novel and require human performance data for validation and licensing. Methods to evaluate novel concepts of operations for diverse advanced reactor designs must be identified to aid vendors in their system design activities. The Rancor microworld is a simulation platform that is currently used to support advanced reactor vendors in developing their control room concepts. The rationale and historical use of the Rancor microworld demonstrates a unique and complimentary approach to traditional full-scope simulator data collection methods that rely on expert licensed operators. The Rancor microworld is a reduced-order model of a small modular reactor conceived and developed to support human performance research on nuclear operations topics. The microworld represents the core elements of a nuclear power plant sans the complexity associated with full-scope simulators that are typically used to support human factors and human reliability research. The impetus for the microworld as an alternative method to acquire human performance data stems from the challenges in performing full-scope simulator studies. Full-scope simulators are expensive to build and maintain. Furthermore, they require extensive expertise to develop scenarios to support specific hypothesis testing. Operations data is historically difficult to obtain since even large research organizations that can afford a full-scope simulator facility encounter sample size issues. Licensed operators are expensive and fully time committed to their employing nuclear power plant. As such, it is very difficult to perform research on nuclear control room operations with sufficient sample sizes to approach statistical significance and draw generalizable conclusions applicable to different designs. Therefore, an alternative population using a simplified simulator offers an approach to evaluate human factors issues. Through numerous studies, the Rancor microworld has demonstrated an effective means to leverage inexpensive and ubiquitous student participants to expand the data collection capability and build a corpus of human performance data to inform advanced reactor control system designs and human reliability modeling. This paper provides an overview of the Rancor microworld studies and describes the benefits and disadvantages of using novice participants in simplified simulator environments in contrast with licensed operators in full-scope simulator environments.
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Giroire, Frederic, Frederic Guinand, Laurent Lefevre et Jordi Torres. « Energy-aware, power-aware, and Green Computing for large distributed systems and applications ». Dans Simulation (HPCS). IEEE, 2010. http://dx.doi.org/10.1109/hpcs.2010.5547162.

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Sjalander, Magnus, Sally A. McKee, Bhavishya Goel, Peter Brauer, David Engdal et Andràs Vajda. « Power-Aware Resource Scheduling in Base Stations ». Dans Simulation of Computer and Telecommunication Systems (MASCOTS). IEEE, 2011. http://dx.doi.org/10.1109/mascots.2011.51.

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Olivares, T., P. J. Tirado, L. Orozco-Barbosa, V. López et P. Pedrón. « Simulation of power-aware wireless sensor network architectures ». Dans the ACM international workshop. New York, New York, USA : ACM Press, 2006. http://dx.doi.org/10.1145/1163653.1163661.

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Shoukourian, Hayk, Torsten Wilde, Axel Auweter et Arndt Bode. « Power variation aware Configuration Adviser for scalable HPC schedulers ». Dans 2015 International Conference on High Performance Computing & Simulation (HPCS). IEEE, 2015. http://dx.doi.org/10.1109/hpcsim.2015.7237023.

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