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A Fuzzy-Based CAC Scheme for Wireless Cellular Networks Considering Different Priorities

A Fuzzy-Based CAC Scheme for Wireless Cellular Networks Cons...

引用

International Conference on Network-Based Information Systems (NBIS)

作者： Taku Ikebata Gjergji Mino Leonard Barolli Akio Koyama Arjan Durresi Fatos Xhafa Graduate School of Engineering Fukuoka Institute of Technology Fukuoka Japan Department of Information and Communication Engineering Fukuoka Institute of Technology Fukuoka Japan Department of Informatics Yamagata University Yonezawa Yamagata Japan Department of Computer and Information Science Indiana University-Purdue University Indianapolis Indianapolis IN USA Department of Languages and Informatics Systems Technical University of Catalonia Barcelona Spain

The mobile cellular systems are expected to support multiple services with guaranteed Quality of Service(QoS). But, the ability of wireless systems to accommodate expected growth of traffic load and broadband services is limited by available radio frequency spectrum. Call Admission Control (CAC) is one of the resource management functions, which regulates network access to ensure QoS provisioning. However, the decision for CAC is very challenging issue due to user mobility, limited radio spectrum, and multimedia traffic characteristics. In our previous work, we proposed a fuzzy-based CAC system by considering the priority of the on-going connections. As priority parameter, we considered only one parameter (service request). In this work, we extend our work by adding different priorities. We call this system FACS-MP. We evaluate by simulations the performance of the proposed system. From the simulations results, we conclude that the FACS-MP can differentiate better different services compared with previous system.

关键词： Mobile communication Wireless networks Quality of service Radiation detectors Fuzzy logic Electronic mail

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Evaluation of a Fuzzy-Based CAC Scheme for Different Priorities in Wireless Cellular Networks

Evaluation of a Fuzzy-Based CAC Scheme for Different Priorit...

引用

International Conference on Broadband, Wireless Computing, Communication and Applications (BWCCA)

作者： Taku Ikebata Gjergji Mino Leonard Barolli Fatos Xhafa Arjan Durresi Akio Koyama Graduate School of Engineering Fukuoka Institute of Technology Fukuoka Japan Department of Information and Communication Engineering Fukuoka Institute of Technology Fukuoka Japan Department of Languages and Informatics Systems Technical University of Catalonia Barcelona Spain Department of Computer and Information Science Indiana University-Purdue University Indianapolis Indianapolis IL USA Department of Informatics Yamagata University Yonezawa Yamagata Japan

Call Admission Control (CAC) is one of the resource management functions, which regulates network access to ensure QoS provisioning. However, the decision for CAC is very challenging issue due to user mobility, limited radio spectrum, and multimedia traffic characteristics. We proposed a fuzzy-based CAC system by considering the priority of the on-going connections. We called this system FACS-P. In FACSP, as priority parameter, we considered only one parameter (service request). In our previous work, we extend our work by adding different priorities. We call this system FACS-MP. In this paper, we evaluate by simulations the performance of the proposed system. From the simulations results, we conclude that the FACS-MP make a good differentiation of different services and has better behaviour than FACS-P.

关键词： Mobile communication Pragmatics Radiation detectors Wireless communication Fuzzy logic Electronic mail Real time systems

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An Intelligent Fuzzy-Based Cluster Head Selection System for WSNs and Its Performance Evaluation for D3N Parameter

An Intelligent Fuzzy-Based Cluster Head Selection System for...

引用

International Conference on Broadband, Wireless Computing, Communication and Applications (BWCCA)

作者： Hironori Ando Leonard Barolli Arjan Durresi Fatos Xhafa Akio Koyama Graduate School of Engineering Fukuoka Institute of Technology Fukuoka Japan Department of Information and Communication Engineering Fukuoka Institute of Technology Fukuoka Japan Department of Computer and Information Science Indiana University-Purdue University Indianapolis Indianapolis IN USA Department of Languages and Informatics Systems Technical University of Catalonia Barcelona Spain Department of Informatics Yamagata University Yonezawa Yamagata Japan

Cluster formation and cluster head selection are important problems in sensor network applications and can drastically affect the network's communication energy dissipation. However, selecting of the cluster head is not easy in different environments which may have different characteristics. In our previous work, in order to deal with this problem, we proposed a power reduction algorithm for sensor networks based on fuzzy logic and number of neighbour nodes. We call this algorithm F3N. In this paper, we evaluate F3N and LEACH by some simulation results. From the simulation results, we found that the probability of a not to be a cluster head is increased with increase of number of neighbour nodes and remained battery power decrease of distance from the cluster centroid.

关键词： Simulation Clustering algorithms Mercury (metals) Manganese Fuzzy logic Wireless sensor networks Batteries

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A simulation system for WSNs as a Digital Eco-System approach considering goodput metric

A simulation system for WSNs as a Digital Eco-System approac...

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Inaugural IEEE-IES Digital EcoSystems and Technologies Conference, DEST

作者： Leonard Barolli Tao Yang Gjergji Mino Arjan Durresi Fatos Xhafa Department of Information and Communication Engineering Fukuoka Institute of Technology Fukuoka Japan Graduate School of Engineering Fukuoka Institute of Technology Fukuoka Japan Department of Computer and Information Science Indiana University-Purdue University Indianapolis IN USA Department of Languages and Informatics Systems Technical University of Catalonia Barcelona Spain

Sensor networks are a sensing, computing and communication infrastructure that are able to observe and respond to phenomena in the natural environment and in our physical and cyber infrastructure. The sensors themselves can range from small passive micro-sensors to larger scale, controllable weather-sensing platforms. In order to simulate Wireless Sensor Networks (WSNs), we implemented a simulation system as a Digital Eco-System (DES) approach. We implement our system as a multi-modal system considering different topologies, radio models, routing protocols, MAC protocols, and different number of nodes. However, in this work, we consider the goodput metric and evaluate the performance of WSN for AODV and TwoRayGround model considering different topologies and number of nodes. To reduce the consumed energy of a large scale WSN network, we consider a mobile sink node in the observing area. We investigate how the sensor network performs in the case when the sink node moves. We compare the simulation results for two cases: when the sink node is mobile and stationary. The simulation results have shown that for the case of mobile sink, the goodput of random topology is better than the case of lattice. In the case of stationary sink, the goodput is unstable. In case of mobile sink, the goodput is stable and better than in case of stationary sink.

关键词： Biological system modeling Wireless sensor networks Mobile communication Topology Sensor phenomena and characterization Network topology

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An Intelligent Fuzzy-Based Cluster Head Selection System for Wireless Sensor Networks and Its Performance Evaluation

An Intelligent Fuzzy-Based Cluster Head Selection System for...

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International Conference on Network-Based Information Systems (NBIS)

Sensor networks supported by recent technological advances in low power wireless communications along with silicon integration of various functionalities are emerging as a critically important computer class that enable novel and low cost applications. There are many fundamental problems that sensor networks research will have to address in order to ensure a reasonable degree of cost and system quality. Cluster formation and cluster head selection are important problems in sensor network applications and can drastically affect the network's communication energy dissipation. However, selecting of the cluster head is not easy in different environments which may have different characteristics. In our previous work, in order to deal with this problem, we proposed a power reduction algorithm for sensor networks based on fuzzy logic and number of neighbor nodes. We call this algorithm F3N. In this paper, we implement a simulation system for clustering algorithms in sensor networks. We evaluate LEACH and F3N by some simulation results. Presently, we have implemented LEACH algorithm in NS-2. However, F3N is implemented in MATLAB. We are working to implement also F3N system in NS-2 in order to compare their performance.

关键词： Clustering algorithms Simulation Mercury (metals) Manganese Fuzzy logic Electronic mail Protocols

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Performance Evaluation of Wireless Sensor Networks for Mobile Sink Considering Consumed Energy Metric

Performance Evaluation of Wireless Sensor Networks for Mobil...

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International Conference on Advanced Information Networking and Applications Workshops (AINAW)

作者： Tao Yang Makoto Ikeda Gjergji Mino Leonard Barolli Arjan Durresi Fatos Xhafa Graduate School of Engineering Fukuoka Institute of Technology Fukuoka Japan Department of Information and Communication Engineering Fukuoka Institute of Technology Fukuoka Japan Department of Computer and Information Science Indiana University-Purdue University Indianapolis Indianapolis IN USA Department of Languages and Informatics Systems Technical University of Catalonia Barcelona Spain

Sensor networks are a sensing, computing and communication infrastructure that are able to observe and respond to phenomena in the natural environment and in our physical and cyber infrastructure. The sensors themselves can range from small passive micro-sensors to larger scale, controllable weather-sensing platforms. To reduce the consumed energy of a large scale sensor network, we consider a mobile sink node in the observing area. In this work, we investigate how the sensor network performs in the case when the sink node moves. We compare the simulation results for two cases: when the sink node is mobile and stationary considering lattice and random topologies using AODV protocol. The simulation results have shown that for the case of mobile sink, the consumed energy is better than the stationary sink (about half of stationary sink in lattice topology). Also for mobile sink, the consumed energy of lattice topology is better than random topology.

关键词： Wireless sensor networks Sensor phenomena and characterization Lattices computer networks Physics computing Mobile communication Communication system control Large-scale systems Network topology Protocols

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Impact of Mobile Event Movement on the Performance of Wireless Sensor Networks

Impact of Mobile Event Movement on the Performance of Wirele...

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International Conference on Systems and Networks Communications (ICSNC)

作者： Tao Yang Leonard Barolli Gjergji Mino Fatos Xhafa Arjan Durresi Fukuoka Institute of Technology Fukuoka Japan Department of Information and Communication Engineering Fukuoka Institute of Technology Fukuoka Japan Graduate School of Engineering Fukuoka Institute of Technology Fukuoka Japan Department of Languages and Informatics Systems Technical University of Catalonia Barcelona Spain Department of Computer and Information Science Indiana University-Purdue University Indianapolis Indianapolis IN USA

In this paper, we investigate how the sensor network performs in the case when the event moves with special movement path. We compare the simulation results for four scenarios: when the event is stationary, moving randomly, moving with simple 4 path and boids path. The simulation results have shown that for the case when event is moving randomly the performance is the worst in the four scenarios. The characteristic of goodput decreases with the increase of number of sensor nodes. In the case of boids model, the gooput is unstable when the Tr is lower than 10 pps. The consumed energy characteristic increases with the increase of Tr. Simulation results show that the consumed energy of random movement is the worst among four scenarios. The consumed energy of boids model is the lowest in four cases. This shows that the event movement with boids model can decrease the consumed energy in the large scale WSNs.

关键词： Biological system modeling Wireless sensor networks Simulation Robot sensing systems Routing protocols Trajectory Lattices

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Impact of Mobile Sink for Wireless Sensor Networks Considering Different Radio Models

Impact of Mobile Sink for Wireless Sensor Networks Consideri...

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International Conference on Network-Based Information Systems (NBIS)

作者： Tao Yang Gjergji Mino Leonard Barolli Arjan Durresi Fatos Xhafa Fukuoka Institute of Technology Fukuoka Japan Graduate School of Engineering Fukuoka Institute of Technology Fukuoka Japan Department of Information and Communication Engineering Fukuoka Institute of Technology Fukuoka Japan Department of Computer and Information Science Indiana University-Purdue University Indianapolis Indianapolis IN USA Department of Languages and Informatics Systems Technical University of Catalonia Barcelona Spain

Wireless Sensor Networks (WSN) are a sensing, computing and communication infrastructure that are able to observe and respond to phenomena in the natural environment and in our physical and cyber infrastructure. The sensors themselves can range from small passive micro sensors to larger scale, controllable weather-sensing platforms. In this work, we investigate how the sensor network performs in the case when the sink node moves using different radio models. We consider good put and depletion metrics to evaluate the performance of WSN. We compare the simulation results when the sink node is mobile and stationary considering lattice topology and AODV protocol. The simulation results have shown that in case of mobile sink, the good put of TwoRayGround radio model is better than Shadowing. However, the consumed energy of Shadowing model is better than TwoRayGround model.

关键词： Wireless sensor networks Mobile communication Topology Lattices Shadow mapping Network topology Receivers

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Impact of Mobile Sink for Wireless Sensor Networks Considering Different Radio Models and Performance Metrics

Impact of Mobile Sink for Wireless Sensor Networks Consideri...

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International Conference on Broadband, Wireless Computing, Communication and Applications (BWCCA)

作者： Tao Yang Gjergji Mino Leonard Barolli Fatos Xhafa Arjan Durresi Fukuoka Institute of Technology Fukuoka Japan Graduate School of Engineering Fukuoka Institute of Technology Fukuoka Japan Department of Information and Communication Engineering Fukuoka Institute of Technology Fukuoka Japan Department of Languages and Informatics Systems Technical University of Catalonia Barcelona Spain Department of Computer and Information Science Indiana University-Purdue University Indianapolis Indianapolis IN USA

In this work, we investigate how WSN performs in the case when sink node moves using different radio models and metrics. We consider routing efficiency, delay and number of received packet metrics to evaluate the performance of WSN using AODV routing protocol, lattice topology, and TwoRayGround and Shadowing radio models. We evaluate the performance of WSN by simulations. The performance evaluation results show that for small number of sensor nodes, the RE of Shadowing radio model is better than TwoRayGround model. However, for high node density, the RE of TwoRayGround model is better than Shadowing radio model. When Tr is less 10, the delay of Shadowing model is better than TwoRayGround model. However, for Tr larger than 100, the delay of TwoRayGround model is better than Shadowing model. With increase of the number of nodes, the number of received packets is also increased. For TwoRayGround model, when Tr is less than 10, the number of received packets for 16, 64, and 100 nodes is almost the same. However, comparing TwoRayGround model with Shadowing model, for the same time interval and for the same number of nodes, the number of received packets of TwoRayGround model is better than Shadowing model.

关键词： Wireless sensor networks Topology Mobile communication Shadow mapping Network topology Routing protocols Delay

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Developmental biology from informatics point of view

Developmental biology from informatics point of view

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International Symposium on Computational Intelligence and informatics

作者： Sándor J. Piros Péter Korondi Department of Mechatronics Optics and Engineering Informatics Budapest University슠of슠Technology슠and슠Economics Budapest Hungary The Computer and Automation Research Institute Hungarian Academy of Sciences (ATOMKI) Budapest Hungary

There are several technical or technological field, which borrowed inspirations or hints from nature. This way it could be interesting to study, how a multicellular organism develops, by consecutive cell divisions, differentiations and proliferation, from a single cell. This development could be regarded as a decompression process of a highly compressed database. Following and mimicking this procedure we might be able to create a similar database or image processing transformation and compression method. The aim of our research is, finding the method how certain information is stored in the genome, which relates to the physical location and type of each cell of the body. Finding any such relationship, could help us to develop new image transformation and compression method.

关键词： Image coding Bioinformatics Databases Organisms informatics Genomics

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