Efficient Back Off Mechanism For Ieee802154 Wireless Sensor Networks

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Efficient Back-off Mechanism for IEEE802.15.4 Wireless Sensor Networks

Author : Dahham Zahraa
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783659761935
Total Pages : 144 pages
Book Rating : 4.7/5 (619 download)

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Book Synopsis Efficient Back-off Mechanism for IEEE802.15.4 Wireless Sensor Networks by : Dahham Zahraa

Download or read book Efficient Back-off Mechanism for IEEE802.15.4 Wireless Sensor Networks written by Dahham Zahraa and published by LAP Lambert Academic Publishing. This book was released on 2015-07-23 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: IEEE 802.15.4 is one of the most prominent MAC protocol standard designed to achieve low-power and low-rate wireless personal area networks. The contention access period of IEEE 802.15.4 employs carrier sense multiple access with collision avoidance (CSMA/CA) algorithm. A long random backoff time causes longer average delay, while a small one gives a high collision rate. In this book, we propose an efficient backoff algorithm, called EBA-15.4MAC that enhances the performance of slotted CSMA/CA algorithm. EBA-15.4MAC is designed based on two new techniques; firstly, it updates the contention window size based on the probability of collision parameter. Secondly, EBA-15.4MAC resolves the problem of access collision via the deployment of a novel Temporary Backoff (TB) and Next Temporary Backoff (NTB). In this case, the nodes not choose backoff exponent randomly as mentioned in the standard but they select TB and NTB values which can be (10-50)% of the actual backoff delay selected by the node randomly. By using these two new methods, EBA-15.4MAC minimizes the level of collision since the probability of two nodes selecting the same backoff period will be low.

Efficient Back-off Mechanism for IEEE 802.15.4 Wireless Sensor Networks

Author : Zahraa D.A. Qadawi
Publisher :
ISBN 13 :
Total Pages : 234 pages
Book Rating : 4.:/5 (975 download)

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Book Synopsis Efficient Back-off Mechanism for IEEE 802.15.4 Wireless Sensor Networks by : Zahraa D.A. Qadawi

Download or read book Efficient Back-off Mechanism for IEEE 802.15.4 Wireless Sensor Networks written by Zahraa D.A. Qadawi and published by . This book was released on 2013 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:

High QoS and Energy Efficient Medium Access Control Protocols for Wireless Sensor Networks

Author : Bilal Muhammad Khan
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (89 download)

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Book Synopsis High QoS and Energy Efficient Medium Access Control Protocols for Wireless Sensor Networks by : Bilal Muhammad Khan

Download or read book High QoS and Energy Efficient Medium Access Control Protocols for Wireless Sensor Networks written by Bilal Muhammad Khan and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Development of Wireless Sensor Nodes revolutionaries sensing and control application. The size of sensor node makes it ideal to be used in variety of applications, but this brings more challenges and problems especially as the capacity of onboard battery is limited. It is due to the very reason that initial research in the field of WSN especially on MAC targets mainly on the energy conservation and gives secondary importance towards other attributes of MAC protocols. These attributes includes latency, throughput, fairness and collision. This research keeping in view of current application requirements which demands QoS as well as energy conservation in static and mobile sensor networks proposes MAC protocols to meet these challenges. In this research to improve the efficiency of the collision resolution algorithms used in mainly contention based MAC protocols, an Improved Binary Exponential Backoff Algorithm is proposed. The main target of this protocol is to resolve the problem of access collision by employing interim backoff period. The protocol targets to improve upon the performance of conventional Binary Exponential Backoff Algorithm which suffers heavily from collision. The result shows significant reduction in collision which increases the efficiency of the network in terms of QoS and energy conservation. To eliminate the problem of collision which is one of the major sources of network performance degradation a novel Delay Controlled Collision Free contention based MAC is designed. The protocol uses novel delay allocation technique. DCCF also provides mechanism to achieve fairness among the nodes. Detailed analysis and comparative result shows substantial increase in throughput and decrease in latency as compared to Industrial standard of IEEE 802.15.4 CSMA/CA MAC. The research also proposed novel MAC protocols for mobile sensor networks. These protocols uses a methodology which is based upon signal strength of the beacon sent to the node from various neighbouring coordinators that enable the nodes to seamlessly enter from one cluster to another without any link loss and unnecessary delays in the shape of association. The proposed scheme is implemented over IEEE 802.15.4 enabling the standard to perform better with dynamic topology. Result shows that mobility adaptive 802.15.4 protocol shows improvement in QoS and conserve energy far better than the existing conventional CSMA/CA MAC standard. Also the algorithm is implemented over Delay Controlled Collision Free Mac protocol and a detail comparison is carried out with other mobility adaptive MAC protocols. The result shows significant decrease in latency as well as high gain in throughput and considerable reduction in energy as compared to the mobility adaptive MAC protocols. Finally in order to resolve fundamental problem of scalable network which suffers from bottleneck as more nodes in the last hop tries to send data towards the sink, a novel protocol is proposed which allows more than one node at a time to transmit the data towards the sink. The protocol named Simultaneous Multi node CSMA/CA enables the conventional industrial standard of IEEE 802.15.4 CSMA/CA protocol to allow more than one node to transmit the data towards the coordinator or sink node. The protocol out performs the existing standard and provides significant increase in QoS of the network.

Wireless Sensor Networks

Author : Ibrahiem M. M. El Emary
Publisher : CRC Press
ISBN 13 : 1466518111
Total Pages : 776 pages
Book Rating : 4.4/5 (665 download)

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Book Synopsis Wireless Sensor Networks by : Ibrahiem M. M. El Emary

Download or read book Wireless Sensor Networks written by Ibrahiem M. M. El Emary and published by CRC Press. This book was released on 2013-08-28 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supplying comprehensive coverage of WSNs, this book covers the latest advances in WSN technologies. It considers some of theoretical problems in WSN, including issues with monitoring, routing, and power control, and details methodologies that can provide solutions to these problems. It examines applications of WSN across a range of fields, including health, defense military, transportation, and mining. Addressing the main challenges in applying WSNs across all phases of our life, it explains how WSNs can assist in community development.

An Efficient Multichannel Wireless Sensor Networks MAC Protocol Based on IEEE 802.11 Distributed Co-ordinated Function

Author : Carlene Campbell
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (798 download)

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Book Synopsis An Efficient Multichannel Wireless Sensor Networks MAC Protocol Based on IEEE 802.11 Distributed Co-ordinated Function by : Carlene Campbell

Download or read book An Efficient Multichannel Wireless Sensor Networks MAC Protocol Based on IEEE 802.11 Distributed Co-ordinated Function written by Carlene Campbell and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This research aimed to create new knowledge and pioneer a path in the area relating to future trends in the WSN, by resolving some of the issues at the MAC layer in Wireless Sensor Networks. This work introduced a Multi-channel Distributed Coordinated Function (MC-DCF) which takes advantage of multi-channel assignment. The backoff algorithm of the IEEE 802.11 distributed coordination function (DCF) was modified to invoke channel switching, based on threshold criteria in order to improve the overall throughput for wireless sensor networks. This work commenced by surveying different protocols: contention-based MAC protocols, transport layer protocols, cross-layered design and multichannel multi-radio assignments. A number of existing protocols were analysed, each attempting to resolve one or more problems faced by the current layers. The 802.15.4 performed very poorly at high data rate and at long range. Therefore 802.15.4 is not suitable for sensor multimedia or surveillance system with streaming data for future multichannel multi-radio systems. A survey on 802.11 DCF - which was designed mainly for wireless networks - supports and confirm that it has a power saving mechanism which is used to synchronise nodes. However it uses a random back-off mechanism that cannot provide deterministic upper bounds on channel access delay and as such cannot support real-time traffic. The weaknesses identified by surveying this protocol form the backbone of this thesis The overall aim for this thesis was to introduce multichannel with single radio as a new paradigm for IEEE 802.11 Distributed Coordinated Function (DCF) in wireless sensor networks (WSNs) that is used in a wide range of applications, from military application, environmental monitoring, medical care, smart buildings and other industry and to extend WSNs with multimedia capability which sense for instance sounds or motion, video sensor which capture video events of interest. Traditionally WSNs do not need high data rate and throughput, since events are normally captured periodically. With the paradigm shift in technology, multimedia streaming has become more demanding than data sensing applications as such the need for high data rate protocol for WSN which is an emerging technology in this area. The IEEE 802.11 can support data rates up to 54Mbps and 802.11 DCF was designed specifically for use in wireless networks. This thesis focused on designing an algorithm that applied multichannel to IEEE 802.11 DCF back-off algorithm to reduce the waiting time of a node and increase throughput when attempting to access the medium. Data collection in WSN tends to suffer from heavy congestion especially nodes nearer to the sink node. Therefore, this thesis proposes a contention based MAC protocol to address this problem from the inspiration of the 802.11 DCF backoff algorithm resulting from a comparison of IEEE 802.11 and IEEE 802.15.4 for Future Green Multichannel Multi-radio Wireless Sensor Networks.

Handbook On Sensor Networks

Author : Yang Xiao
Publisher : World Scientific
ISBN 13 : 9814469122
Total Pages : 911 pages
Book Rating : 4.8/5 (144 download)

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Book Synopsis Handbook On Sensor Networks by : Yang Xiao

Download or read book Handbook On Sensor Networks written by Yang Xiao and published by World Scientific. This book was released on 2010-08-30 with total page 911 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sensor networks have many interesting applications with great utility; however, their actually deployment and realization rely on continuous innovations and solutions to many challenging problems. Thus, sensor networks have recently attracted the attention of many researchers and practitioners. The compilation of the Handbook on Sensor Networks will meet the demand of the sensor network community for a comprehensive reference and summary of the current state of the area.The Handbook on Sensor Networks is a collection of approximately 40 chapters on sensor network theory and applications. The book spans a wide spectrum and includes topics in medium access control, routing, security and privacy, coverage and connectivity, modeling and simulations, multimedia, energy efficiency, localization and tracking, design and implementation, as well as sensor network applications.

Ultra-Low Energy Wireless Sensor Networks in Practice

Author : Mauri Kuorilehto
Publisher : John Wiley & Sons
ISBN 13 : 9780470516799
Total Pages : 396 pages
Book Rating : 4.5/5 (167 download)

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Book Synopsis Ultra-Low Energy Wireless Sensor Networks in Practice by : Mauri Kuorilehto

Download or read book Ultra-Low Energy Wireless Sensor Networks in Practice written by Mauri Kuorilehto and published by John Wiley & Sons. This book was released on 2008-02-28 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Finally a book on Wireless Sensor Networks that covers real world applications and contains practical advice! Kuorilehto et al. have written the first practical guide to wireless sensor networks. The authors draw on their experience in the development and field-testing of autonomous wireless sensor networks (WSNs) to offer a comprehensive reference on fundamentals, practical matters, limitations and solutions of this fast moving research area. Ultra Low Energy Wireless Sensor Networks in Practice: Explains the essential problems and issues in real wireless sensor networks, and analyzes the most promising solutions. Provides a comprehensive guide to applications, functionality, protocols, and algorithms for WSNs. Offers practical experiences from new applications and their field-testing, including several deployed networks. Includes simulations and physical measurements for energy consumption, bit rate, latency, memory, and lifetime. Covers embedded resource-limited operating systems, middleware and application software. Ultra Low Energy Wireless Sensor Networks in Practice will prove essential reading for Research Scientists, advanced students in Networking, Electrical Engineering and Computer Science as well as Product Managers and Design Engineers.

Energy Efficient Spectrum Resources Usage in WPANs

Author : Luís Miguel Borges
Publisher : CRC Press
ISBN 13 : 1000794733
Total Pages : 432 pages
Book Rating : 4.0/5 (7 download)

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Book Synopsis Energy Efficient Spectrum Resources Usage in WPANs by : Luís Miguel Borges

Download or read book Energy Efficient Spectrum Resources Usage in WPANs written by Luís Miguel Borges and published by CRC Press. This book was released on 2023-01-31 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless Sensor Networks (WSNs) and the Internet of Things are facing tremendous advances both in terms of energy-efficiency as well as in the number of available applications. Consequently, there are challenges that need to be tackled for the future generation of WSNs. After giving an overview of the WSN protocols and IEEE 802.15.4 standard, this book proposes IEEE 802.15.4 Medium Access Control (MAC) sub-layer performance enhancements by employing not only RTS/CTS combined with packet concatenation but also scheduled channel poling (MC-SCP). Results have shown that the use of the RTS/CTS mechanism improves channel efficiency by decreasing the deferral time before transmitting a data packet. Furthermore, the Sensor Block Acknowledgment MAC (SBACK-MAC) protocol enables more efficiency as it allows the aggregation of several acknowledgement responses in one special Block Acknowledgment (BACK) Response packet. The throughput and delay performance have been mathematically derived under both ideal conditions (a channel environment with no transmission errors) and non-ideal conditions (with transmission errors). Simulation results successfully validate the proposed analytical models. This research reveals the importance of an appropriate design for the MAC sub-layer protocol for the desired WSN application. Depending on the mission of the WSN application, different protocols are required. Therefore, the overall performance of a WSN application certainly depends on the development and application of suitable e.g., MAC, network layer protocols.

Wireless Sensor Networks

Author : Shafiullah Khan
Publisher : CRC Press
ISBN 13 : 1466506083
Total Pages : 547 pages
Book Rating : 4.4/5 (665 download)

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Book Synopsis Wireless Sensor Networks by : Shafiullah Khan

Download or read book Wireless Sensor Networks written by Shafiullah Khan and published by CRC Press. This book was released on 2016-04-21 with total page 547 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless sensor networks (WSNs) utilize fast, cheap, and effective applications to imitate the human intelligence capability of sensing on a wider distributed scale. But acquiring data from the deployment area of a WSN is not always easy and multiple issues arise, including the limited resources of sensor devices run with one-time batteries. Additi

Wireless Sensor Networks and Energy Efficiency: Protocols, Routing and Management

Author : Zaman, Noor
Publisher : IGI Global
ISBN 13 : 1466601027
Total Pages : 656 pages
Book Rating : 4.4/5 (666 download)

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Book Synopsis Wireless Sensor Networks and Energy Efficiency: Protocols, Routing and Management by : Zaman, Noor

Download or read book Wireless Sensor Networks and Energy Efficiency: Protocols, Routing and Management written by Zaman, Noor and published by IGI Global. This book was released on 2012-01-31 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book focuses on wireless sensor networks and their operation, covering topics including routing, energy efficiency and management"--

Information Networking. Towards Ubiquitous Networking and Services

Author : Teresa Vazão
Publisher : Springer
ISBN 13 : 3540895248
Total Pages : 858 pages
Book Rating : 4.5/5 (48 download)

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Book Synopsis Information Networking. Towards Ubiquitous Networking and Services by : Teresa Vazão

Download or read book Information Networking. Towards Ubiquitous Networking and Services written by Teresa Vazão and published by Springer. This book was released on 2008-11-20 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the set of revised selected papers presented at the 21st International Conference on Information Networking (ICOIN 2007), which was held in Estoril, Portugal, January 23–25, 2007. The conference series started under the name of Joint Workshop on Computer Communications, in 1986. At that time, it constituted a technical meeting for researchersand engineers on - ternet technologies in East Asian countries, where several technical networking issues were discussed. In 1993, the meeting was reorganized as an international conference known as ICOIN. Recent conferences were held in Sendai, Japan (2006),Jeju,Korea(2005),Pusan,Korea(2004),Jeju,Korea(2003),Jeju,Korea (2002), Beppu City, Japan (2001), Hsin-chu, Taiwan (2000), and Tokyo, Japan (1999). In 2007, for the ?rst time since its creation, ICOIN took place outside Asia, and we were very pleased to host it in Portugal. ICOIN 2007 was or- nized by INESC-ID and IST/Technical University of Lisbon (Portugal) with the technical co-sponsorship of IEEE Communications Society and IEEE Portugal Section-Computer Society Chapter, in cooperation with the Order of Engineers CollegeofInformaticsEngineering(Portugal),IPSJ(InformationProcessing- ciety of Japan), KISS (Korea Information Science Society), and Lecture Notes in Computer Science (LNCS), Springer, Germany. The papers presented in this volume were selected in two stages: 1) revi- ing and selection for the ICOIN program and 2) on-site presentation review by session chairs or by program committee chairs.

Management of Convergence Networks and Services

Author : Young-Tak Kim
Publisher : Springer
ISBN 13 : 3540462333
Total Pages : 621 pages
Book Rating : 4.5/5 (44 download)

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Book Synopsis Management of Convergence Networks and Services by : Young-Tak Kim

Download or read book Management of Convergence Networks and Services written by Young-Tak Kim and published by Springer. This book was released on 2006-09-27 with total page 621 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 9th Asia-Pacific Network Operations and Management Symposium, APNOMS 2006. The book presents 50 revised full papers and 25 revised short papers, organized in topical sections on management of ad hoc and sensor networks, network measurements and monitoring, mobility management, QoS management, management architectures and models, security management, E2E QoS and application management, management experience, NGN management, and IP-based network management.

Industrial Wireless Sensor Networks

Author : V. Çağrı Güngör
Publisher : CRC Press
ISBN 13 : 1351832506
Total Pages : 408 pages
Book Rating : 4.3/5 (518 download)

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Book Synopsis Industrial Wireless Sensor Networks by : V. Çağrı Güngör

Download or read book Industrial Wireless Sensor Networks written by V. Çağrı Güngör and published by CRC Press. This book was released on 2017-12-19 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: The collaborative nature of industrial wireless sensor networks (IWSNs) brings several advantages over traditional wired industrial monitoring and control systems, including self-organization, rapid deployment, flexibility, and inherent intelligent processing. In this regard, IWSNs play a vital role in creating more reliable, efficient, and productive industrial systems, thus improving companies’ competitiveness in the marketplace. Industrial Wireless Sensor Networks: Applications, Protocols, and Standards examines the current state of the art in industrial wireless sensor networks and outlines future directions for research. What Are the Main Challenges in Developing IWSN Systems? Featuring contributions by researchers around the world, this book explores the software and hardware platforms, protocols, and standards that are needed to address the unique challenges posed by IWSN systems. It offers an in-depth review of emerging and already deployed IWSN applications and technologies, and outlines technical issues and design objectives. In particular, the book covers radio technologies, energy harvesting techniques, and network and resource management. It also discusses issues critical to industrial applications, such as latency, fault tolerance, synchronization, real-time constraints, network security, and cross-layer design. A chapter on standards highlights the need for specific wireless communication standards for industrial applications. A Starting Point for Further Research Delving into wireless sensor networks from an industrial perspective, this comprehensive work provides readers with a better understanding of the potential advantages and research challenges of IWSN applications. A contemporary reference for anyone working at the cutting edge of industrial automation, communication systems, and networks, it will inspire further exploration in this promising research area.

Computer Applications

Author : Min Zhang
Publisher : Springer Nature
ISBN 13 : 981998761X
Total Pages : 285 pages
Book Rating : 4.8/5 (199 download)

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Book Synopsis Computer Applications by : Min Zhang

Download or read book Computer Applications written by Min Zhang and published by Springer Nature. This book was released on 2023-12-15 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: The two-volume set CCIS 1959 and 1960 constitutes the refereed post-conference proceedings of the 38th CCF National Conference on Computer Applications, CCF NCCA 2023, held in Suzhou, China, during July 16–20, 2023. The 39 revised full papers presented in these proceedings were carefully reviewed and selected from 197 submissions. The papers are organized in the following topical sections: Volume I: Artificial intelligence and application. Volume II: Data science and technology; pattern recognition and machine learning; network communication and security; frontier and comprehensive applications.

Handbook of Green Information and Communication Systems

Author : Alagan Anpalagan
Publisher : Academic Press
ISBN 13 : 012415882X
Total Pages : 815 pages
Book Rating : 4.1/5 (241 download)

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Book Synopsis Handbook of Green Information and Communication Systems by : Alagan Anpalagan

Download or read book Handbook of Green Information and Communication Systems written by Alagan Anpalagan and published by Academic Press. This book was released on 2012-11-20 with total page 815 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a comprehensive guide on the fundamental concepts, applications, algorithms, protocols, new trends and challenges, and research results in the area of Green Information and Communications Systems. It is an invaluable resource giving knowledge on the core and specialized issues in the field, making it highly suitable for both the new and experienced researcher in this area. Key Features: - Core research topics of green information and communication systems are covered from a network design perspective, giving both theoretical and practical perspectives - Provides a unified covering of otherwise disperse selected topics on green computing, information, communication and networking - Includes a set of downloadable PowerPoint slides and glossary of terms for each chapter - A 'whose-who' of international contributors - Extensive bibliography for enhancing further knowledge Coverage includes: - Smart grid technologies and communications - Spectrum management - Cognitive and autonomous radio systems - Computing and communication architectures - Data centres - Distributed networking - Cloud computing - Next generation wireless communication systems - 4G access networking - Optical core networks - Cooperation transmission - Security and privacy - Core research topics of green information and communication systems are covered from a network design perspective, giving both a theoretical and practical perspective - A 'whose-who' of international contributors - Extensive bibliography for enhancing further knowledge

Progress in Computing, Analytics and Networking

Author : Prasant Kumar Pattnaik
Publisher : Springer
ISBN 13 : 9811078718
Total Pages : 826 pages
Book Rating : 4.8/5 (11 download)

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Book Synopsis Progress in Computing, Analytics and Networking by : Prasant Kumar Pattnaik

Download or read book Progress in Computing, Analytics and Networking written by Prasant Kumar Pattnaik and published by Springer. This book was released on 2018-04-10 with total page 826 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book focuses to foster new and original research ideas and results in three broad areas: computing, analytics, and networking with its prospective applications in the various interdisciplinary domains of engineering. This is an exciting and emerging interdisciplinary area in which a wide range of theory and methodologies are being investigated and developed to tackle complex and challenging real world problems. It also provides insights into the International Conference on Computing Analytics and Networking (ICCAN 2017) which is a premier international open forum for scientists, researchers and technocrats in academia as well as in industries from different parts of the world to present, interact, and exchange the state of art of concepts, prototypes, innovative research ideas in several diversified fields. The book includes invited keynote papers and paper presentations from both academia and industry to initiate and ignite our young minds in the meadow of momentous research and thereby enrich their existing knowledge. The book aims at postgraduate students and researchers working in the discipline of Computer Science & Engineering. It will be also useful for the researchers working in the domain of electronics as it contains some hardware technologies and forthcoming communication technologies.

Ubiquitous Intelligence and Computing

Author : Zhiwen Yu
Publisher : Springer Science & Business Media
ISBN 13 : 3642163548
Total Pages : 712 pages
Book Rating : 4.6/5 (421 download)

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Book Synopsis Ubiquitous Intelligence and Computing by : Zhiwen Yu

Download or read book Ubiquitous Intelligence and Computing written by Zhiwen Yu and published by Springer Science & Business Media. This book was released on 2010-10-08 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ubiquitous sensors, devices, networks and information are paving the way toward a smart world in which computational intelligence is distributed throughout the physical environment to provide reliable and relevant services to people. This ubiquitous intelligence will change the computing landscape because it will enable new breeds of applications and systems to be developed, and the realm of computing possibilities will be significantly extended. By enhancing everyday objects with intelligence, many tasks and processes could be simplified, the physical spaces where people interact, like workplaces and homes, could become more efficient, safer and more enjoyable. Ubiquitous computing, or pervasive computing, uses these many “smart things” or “u-things” to create smart environments, services and applications. A smart thing can be endowed with different levels of intelligence, and may be c- text-aware, active, interactive, reactive, proactive, assistive, adaptive, automated, sentient, perceptual, cognitive, autonomic and/or thinking. Research on ubiquitous intelligence is an emerging research field covering many disciplines. A series of grand challenges exists to move from the current level of computing services to the smart world of adaptive and intelligent services. Started in 2005, the series of UIC conferences has been held in Taipei, Nagasaki, Three Gorges (China), Hong Kong, Oslo and Brisbane. The proceedings contain the papers presented at the 7th International Conference on Ubiquitous Intelligence and Computing (UIC 2010), held in Xi’an, China, October 26–29, 2010. The conference was accompanied by six vibrant workshops on a variety of research challenges within the area of ubiquitous intelligence and computing.