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International Conference on Computing, Power and Communication Technologies (GUCON)

作者： Gohel, Samarth Savitribai Phule Pune Univ KKWIEER Dept Comp Engn Nasik India

ISBN: (纸本)9781538644911

Beacons are the devices which are connected with any android devices using Bluetooth. This can be utilized to check the presence of a client inside premises. In many schools and colleges, the educator physically records the attendance in the class. In this paper, I am aiming at implementing a Bluetooth low energy based attendance administration framework. When the student reaches into within the range of beacon, the android app will detect the previously registered beacon devices and it establishes connection. The application is used to collect the data from the Bluetooth and store it accordingly. To ensure the credibility of the framework I am utilizing individuals checking framework through video surveillance. This technique not only enhances the use of Bluetooth but also supports the ERP for decision making.

关键词： Computational photography Computer vision Image acquisition network architecture and design network monitoring Wireless communication

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Fault-Tolerant Small Cells Locations Planning in 4G/5G Heterogeneous Wireless networks

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IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY 2017年第6期66卷 5269-5283页

作者： Omar, Tamer Abichar, Zakhia Kamal, Ahmed E. Chang, J. Morris Alnuem, Mohammad Abdullah East Carolina Univ Dept Technol Syst Greenville NC 27858 USA Univ Cent Florida Dept Elect & Comp Engn Orlando FL 32816 USA Iowa State Univ Dept Elect & Comp Engn Ames IA 50011 USA Univ S Florida Dept Elect Engn Tampa FL 33620 USA King Saud Univ Dept Informat Syst Riyadh 11451 Saudi Arabia

Fourth/Fifth Generation heterogeneous wireless networks (4G/5G HetNets) use or will use small cells (SCs) to extend network coverage and increase spectrum efficiency. However, the standard and technical specifications do not specify how to plan the locations of the SCs within the network. Several papers introduced strategies for planning the locations of SCs in the 4G HetNet architecture. However, SCs placement strategies to support the self-healing functionality of the 4G/5G self organizing networks framework has not been studied in the literature. The placement of SCs in 4G HetNets such that an SC failure will not interrupt service, hence making the network fault tolerant, is an important design and planning problem that is addressed in this paper. We present an integer linear program formulation for planning operators of managed SC locations with fault tolerance. We allow one SC to fail and by using self-healing, a fault-tolerance service is provided at designated fail-over levels (defined in terms of users throughput). We consider the problem of SC location planning by using offloading in both out-band and in-band modes, and an interference model is presented to consider the in-band mode and to address the effect of interference on SCs placement planning. A novel approach to provide a linear interference model by using an expanded state space to get rid of nonlinearity is introduced. We present numerical results that show how our model can be used to plan the positions of SCs. We also incorporate the existence of obstacles in the planning, such as large structures or natural formations, that might happen in real life. To the best of our knowledge, this is the first work that addresses the planning of SC locations in 4G/5G HetNets in a fault-tolerant manner.

关键词： Fault tolerance 4G HetNets network architecture and design self-healing self organizing networks (SON) small cells

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Providing Guaranteed Protection in Multi-Hop Wireless networks with Interference Constraints

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IEEE TRANSACTIONS ON MOBILE COMPUTING 2017年第12期16卷 3502-3512页

作者： Kuperman, Greg Modiano, Eytan MIT LIDS 77 Massachusetts Ave Cambridge MA 02139 USA

We consider the problem of providing protection against failures in wireless networks subject to interference constraints. Typically, protection in wired networks is provided through the provisioning of dedicated backup paths. This approach has not been previously considered in the wireless setting due to the prohibitive cost of backup capacity. Assigning capacity for dedicated backup paths in a wireless setting can more than double the total resources required from what was needed without protection, which can make protection infeasible. However, we show that in the presence of interference, guaranteed protection can be provided for all demands with little, and oftentimes no, additional resources beyond what was required without any protection. This is due to the fact that after a failure, links that previously interfered with the failed link can be activated, thus leading to a "recapturing" of lost capacity. We provide an ILP formulation to find an optimal solution for both binary and SINR interference constraints, and develop corresponding time-efficient algorithms. Our approach utilizes up to 87 percent less protection resources than traditional disjoint path routing to provide guaranteed protection. For the case of 2-hop interference, our protection scheme requires only 8 percent more resources on average than providing no protection whatsoever.

关键词： network-level security and protection network architecture and design network communications

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A Novel Method for designing Information Technology Services 16

A Novel Method for Designing Information Technology Services

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IEEE International Conference on Computer and Information Technology (CIT)

作者： Kao, Yi-Chih Chang, Yung-Chia Peng, Sheng-Lung Chang, Ruay-Shiung Natl Chiao Tung Univ Hsinchu 30010 Taiwan Natl Dong Hwa Univ Hualien 97401 Taiwan Natl Taipei Univ Business Taipei 10051 Taiwan

ISBN: (纸本)9781509043149

Information technology (IT) services are diverse and complex. Numerous service design methods have been developed for designing and developing products. However, owing to the limited availability of useful tools in IT service design, these methods are ineffective. This study proposes an innovative three-dimensional method for designing IT services. The proposed method considers user requirements, an organization's business requirements, service providers' management requirements as well as the decision-making criteria of management representatives to ensure a smooth implementation of a designed IT service. Using this method, a prototype system to improve campus wireless local area network services was developed and tested at a university in Taiwan. The prototype system reduced the need for repetitive authentication and the time required to solve service problems and address user complaints. In addition, the service design team observed an approximately 70% reduction in project cycle time. The proposed method provided a systematic means to organize the design and implementation of IT services.

关键词： service design and management model project management network architecture and design

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Implementation and Deployment Evaluation of the DMAMAC Protocol for Wireless Sensor Actuator networks 7

Implementation and Deployment Evaluation of the DMAMAC Proto...

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7th International Conference on Ambient Systems, networks and Technologies (ANT) / 6th International Conference on Sustainable Energy Information Technology (SEIT)

作者： Somappa, Admar Ajith Kumar Ovsthus, Knut Kristensen, Lars Michael Bergen Univ Coll Fac Engn & Business Adm Bergen Norway Univ Agder Fac Sci & Engn Kristiansand Norway

The increased application of wireless technologies including Wireless Sensor Actuator networks (WSAN) in industry has given rise to a plethora of protocol designs. These designs target metrics ranging from energy efficiency to real-time constraints. Protocol design typically starts with a requirements specification, and continues with analytic and model-based simulation analysis. State-ofthe- art network simulators provide extensive physical environment emulation, but still have limitations due to model abstractions. Deployment testing on actual hardware is therefore vital in order to validate implementability and usability in the real environment. The contribution of this article is a deployment testing of the Dual-Mode Adaptive MAC (DMAMAC) protocol. DMAMAC is an energy efficient protocol recently proposed for real-time process control applications and is based on Time Division Multiple Access (TDMA) in conjunction with dual-mode operation. A main challenge in implementing DMAMAC is the use of a dynamic superframe structure. We have successfully implemented the protocol on the Zolertia Z1 platform using TinyOS(2x). Our scenario-based evaluation shows minimal packet loss and smooth mode-switch operation, thus indicating a reliable implementation of the DMAMAC protocol. (C) 2016 The Authors. Published by Elsevier B.V.

关键词： Wireless sensor networks and applications network architecture and design Communication protocols

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Evaluation of Simulators for Teaching Computer networks

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INTERNATIONAL JOURNAL OF ENGINEERING EDUCATION 2016年第5期32卷 2098-2106页

作者： Jovanovic, Nenad Jovanovic, Zoran Jevremovic, Aleksandar Univ Pristina Fac Tech Sci Dept Comp & Informat Pristina Serbia Business Sch Profess Studies Kralja Petra 70 Blace Serbia Singidunum Univ Dept Comp & Informat Bulevar Zorana Djindj 44 Belgrade Serbia

This paper provides a short description of thirteen computer network simulators that are mainly used for educational purposes. Criteria for the evaluation and comparison of the simulators were presented. The criteria are applied in order to compare the simulators being described. This comparative analysis is useful when selecting a suitable simulator for teaching a specific computer networks course.

关键词： network architecture and design simulation and modeling computers and education

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Implementation and Deployment Evaluation of the DMAMAC Protocol for Wireless Sensor Actuator networks

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Procedia Computer Science 2016年 83卷 329-336页

作者： Admar Ajith Kumar Somappa Knut Øvsthus Lars Michael Kristensen Faculty of Engineering and Business Administration Bergen University College Norway Faculty of Engineering and Science University of Agder Norway

The increased application of wireless technologies including Wireless Sensor Actuator networks (WSAN) in industry has given rise to a plethora of protocol designs. These designs target metrics ranging from energy efficiency to real-time constraints. Protocol design typically starts with a requirements specification, and continues with analytic and model-based simulation analysis. State-of- the-art network simulators provide extensive physical environment emulation, but still have limitations due to model abstractions. Deployment testing on actual hardware is therefore vital in order to validate implementability and usability in the real environment. The contribution of this article is a deployment testing of the Dual-Mode Adaptive MAC (DMAMAC) protocol. DMAMAC is an energy efficient protocol recently proposed for real-time process control applications and is based on Time Division Multiple Access (TDMA) in conjunction with dual-mode operation. A main challenge in implementing DMAMAC is the use of a dynamic superframe structure. We have successfully implemented the protocol on the Zolertia Z1 platform using TinyOS (2x). Our scenario- based evaluation shows minimal packet loss and smooth mode-switch operation, thus indicating a reliable implementation of the DMAMAC protocol.

关键词： Wireless sensor networks and applications network architecture and design Communication protocols.

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Formalization and configuration methodology for high-radix combined switches

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JOURNAL OF SUPERCOMPUTING 2014年第3期69卷 1410-1444页

作者： Villar, Juan A. Andujar, Francisco J. Alfaro, Francisco J. Sanchez, Jose L. Duato, Jose Univ Castilla La Mancha Comp Syst Dept Albacete Spain Univ Politecn Valencia Dept Syst Data Proc & Comp Valencia Spain

In large switch-based interconnection networks, increasing the switch radix results in a decrease in the total number of network components, and consequently the overall cost of the network can be significantly reduced. Moreover, high-radix switches are an attractive option to improve the network performance in terms of latency since hop count is also reduced. However, there are some difficulties related to integration scale to design such switches. In this paper we present and formalize an interesting alternative for building high-radix switches going beyond the integration scale bounds. The idea basically consists in combining several current smaller switches to obtain switches having greater number of ports. This strategy will remain valid as the scale of integration keeps evolving. Although simple, this strategy raises key design challenges in order to these high-radix switches achieve the best performance. The resultant internal structure of these switches becomes an important design decision, and an arbitrary selection may produce a significant performance degradation. For this reason, we also propose a general methodology to configure in an optimal way the internal switch structure and apply it to a particular case in order to show how it works. The resultant switch configurations are evaluated in order to show the real potential of our proposal.

关键词： network architecture and design Configuration methodology Formal analysis High-radix switches Fat-tree topology Performance evaluation

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dAElite: A TDM NoC Supporting QoS, Multicast, and Fast Connection Set-Up

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IEEE TRANSACTIONS ON COMPUTERS 2014年第3期63卷 583-594页

作者： Stefan, Radu Andrei Molnos, Anca Goossens, Kees Eindhoven Univ Technol NL-5600 MB Eindhoven Netherlands Delft Univ Technol Dept Comp Engn NL-2628 CD Delft Netherlands Eindhoven Univ Technol Fac Elect Engn NL-5600 MB Eindhoven Netherlands

networks-on-Chip (NoC) are seen as promising interconnect solutions, offering the advantages of scalability and high-frequency operation which the traditional bus interconnects lack. Several NoC implementations have been presented in the literature, some of them having mature tool-flows. The main differentiating factor between the various implementations is the set of services and communication patterns they offer to the end-user. In this paper we present dAElite, a TDM network-on-Chip that offers a unique combination of features, namely, guaranteed bandwidth and latency per connection, built-in support for multicast, and a short connection set-up time. While our NoC was designed from the ground up, we leverage on existing tools for network dimensioning, analysis, and instantiation. We have implemented and tested our proposal in hardware and we compared it to AEthereal, a state-of-the-art NoC with similar features, but no multicast. We find that the connection set-up time is reduced by a factor of 10 and the network traversal latency is decreased by 33 percent. Moreover, considering realistic values of the network parameters, dAElite has a lower hardware area when synthesized in 65 nm technology.

关键词： Hardware implementation network architecture and design circuit-switching networks

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All-Optical Wavelength-Routed architecture for a Power-Efficient network on Chip

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IEEE TRANSACTIONS ON COMPUTERS 2014年第3期63卷 777-792页

作者： Koohi, Somayyeh Hessabi, Shaahin Sharif Univ Technol Dept Comp Engn Tehran Iran

In this paper, we propose a new architecture for nanophotonic networks on Chip (NoC), named 2D-HERT, which consists of optical data and control planes. The proposed data plane is built upon a new topology and all-optical switches that passively route optical data streams based on their wavelengths. Utilizing wavelength routing method, the proposed deterministic routing algorithm, and Wavelength Division Multiplexing (WDM) technique, the proposed data plane eliminates the need for optical resource reservation at the intermediate nodes. For resolving end-point contention, we propose an all-optical request-grant arbitration architecture which reduces optical losses compared to the alternative arbitration schemes. By performing a series of simulations, we study the efficiency of the proposed architecture, its power and energy consumption, and the data transmission delay. Moreover, we compare the proposed architecture with electrical NoCs and alternative optical NoCs under various synthetic traffic patterns. Averaged across different traffic patterns, 2D-HERT reduces data transmission delay by 24, 15, 18, 4, and 70 percent and achieves average per-packet power reduction of 58, 47, 52, 45, and 95 percent over Phastlane, Firefly, Corona architecture, lambda-router, and electrical Torus, respectively.

关键词： Interconnection architectures emerging technologies network architecture and design low-power design

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