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IEEE/ACM International Conference on Cyber-Physical Systems

作者： Kyusuk Han Swapna Divya Potluri Kang G. Shin Real-Time Computing Laboratory Department of Electrical Engineering and Computer Science The University of Michigan

ISBN: (纸本)9781450319966

Recent advances in in-vehicle technologies have paved way to a new era of connectivity. Vehicle manufacturers have already deployed various technologies for driving assistance, anti-theft, and infotainment. They are now developing ways to interface mobile devices with vehicles and provide the customer's smartphone or tablet the ability to send/receive information to/from the car. However, such an integration introduces severe security risks to the vehicle. The in-vehicle network was originally designed to operate in a closed environment and thus, security was not of concern. It has now become an important issue due to an increasing number of external interfaces to the in-vehicle network. Several studies have already shown that an in-vehicle network can be easily compromised just by connecting cheap commercial devices and doing reverse engineering. Although research efforts have been made to secure in-vehicle networks, most of them focused on defining security requirements, or presenting attack scenarios without providing any feasible solution. Also, to the best of our knowledge, there hasn't been any study with a specific focus on understanding and analyzing the security aspects of integrating mobile devices with cars. In this paper, we define the integration model, present the attack scenarios, define the security objectives, and then propose a 3-step verification mechanism that meets our objectives.

关键词： Vehicular networks Security Mobile device integration Authentication Controller Area Network (CAN) Vehicle Network Mobile devices Authentication Security Goals Security vehicle Cars Secure DNA Integration integration safety requirements Network

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Characterizing feedback signal drop patterns in formal verification of networked control systems

Characterizing feedback signal drop patterns in formal verif...

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2013 IEEE Conference on computer Aided Control System Design, CACSD 2013

作者： Goswami, Dip Chakraborty, Samarjit Bhaduri, Purandar Mitter, Sanjoy K. Institute for Real-Time Computer Systems TU Munich Germany Department of Computer Science and Engineering IIT Guwahati India Laboratory for Information and Decision Systems MIT United States

ISBN: (纸本)9781479915651

In order to obtain resource efficient implementations of control loops on embedded platforms, recently there has been a renewed interest in studying stability and various other quality-of-control (QoC) metrics in the presence of control message drops. Towards this, different methods have been proposed to quantify the impact of message drops on stability and control performance. In this paper we will survey these techniques and clarify the relationship between them. Given a drop pattern that satisfies stability and specified QoC constraints, it is important to check whether an implementation platform satisfies this pattern. In other words, whether the control loop in question may be implemented on this platform. Given an architecture, we will also show how certain notions of expressing drop patterns are easier to verify compared to others. © 2013 IEEE.

关键词： Drops

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Immune-Inspired Error Detection for Multiple Faulty Robots in Swarm Robotics 12

Immune-Inspired Error Detection for Multiple Faulty Robots i...

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12th European Conference on the Synthesis and Simulation of Living Systems: Advances in Artificial Life, ECAL 2013

作者： Lau, Hui Keng Bate, Iain Timmis, Jon Department of Computer Science University of York United Kingdom Department of Electronics Univesity of York United Kingdom Applied Computing Group SKTM UMS Malaysia Mälardalen Real-Time Research Centre Mälardalen University Västeras Sweden

ISBN: (纸本)9780262317092

Error detection and recovery are important issues in swarm robotics research, as they are a means by which fault tolerance can be achieved. Our previous work has looked at error detection for single failures in a swarm robotics scenario with the Receptor Density Algorithm. Three modes of failure to the wheels of individual robots was investigated and comparable performance to other statistical methods was achieved. In this paper, we investigate the potential of extending this approach to a robot swarm with multiple faulty robots. Two experiements have been conducted: A swarm of ten robots with 1 to 8 faulty robots, and a swarm of 10 to 20 robots with varying number of faulty robots. Results from the experiments showed that the proposed approach is able to detect errors in multiple faulty robots. The results also suggest the need to further investigate other aspects of the robot swarm that can potentially affect the performance of detection such as the communication range. © 2013 Proceedings of the 12th European Conference on the Synthesis and Simulation of Living Systems: Advances in Artificial Life, ECAL 2013. All rights reserved.

关键词： Robots

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Approach for automatic construction of ontology based on medication guide

Approach for automatic construction of ontology based on med...

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7th Chinese Semantic Web Symposium and the 2nd Chinese Web scienceConference, CSWS 2013

作者： Lu, Yuting Gu, Jinguang Huang, Zhisheng Computer Science and Technology Wuhan University of Science and Technology Wuhan 430065 China Hubei Province Key Laboratory of Intelligent Information Processing and Real-time Industrial System Wuhan 430065 China Department of Computer Science Vrije University of Amsterdam 1081hv Amsterdam Netherlands

ISBN: (纸本)9783642540240

Medication guide ontology has great significance for semantic study of rational use of drugs. Nowadays, medical ontology is mainly constructed manually, which spends a lot in time and manpower, and is also difficult to ensure the accuracy. This paper proposes a method of constructing the domain ontology of medication guide automatically. The method uses semantic pattern analysis to extract information, optimizes the extracted concepts and relations, generates medication guide ontology, and then provides the interface of pattern expansion to adapt to the changing medication guide data. Finally, it realizes the automatic construction of ontology system, and conducts experiments on to verify the feasibility of the system. © Springer-Verlag Berlin Heidelberg 2013.

关键词： Ontology

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Searching for Dark Matter Annihilation from Milky Way Dwarf Spheroidal Galaxies with Six Years of Fermi Large Area Telescope Data

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Physical Review Letters 2015年第23期115卷 231301-231301页

作者： M. Ackermann A. Albert B. Anderson W. B. Atwood L. Baldini G. Barbiellini D. Bastieri K. Bechtol R. Bellazzini E. Bissaldi R. D. Blandford E. D. Bloom R. Bonino E. Bottacini T. J. Brandt J. Bregeon P. Bruel R. Buehler G. A. Caliandro R. A. Cameron R. Caputo M. Caragiulo P. A. Caraveo C. Cecchi E. Charles A. Chekhtman J. Chiang G. Chiaro S. Ciprini R. Claus J. Cohen-Tanugi J. Conrad A. Cuoco S. Cutini F. D’Ammando A. de Angelis F. de Palma R. Desiante S. W. Digel L. Di Venere P. S. Drell A. Drlica-Wagner R. Essig C. Favuzzi S. J. Fegan E. C. Ferrara W. B. Focke A. Franckowiak Y. Fukazawa S. Funk P. Fusco F. Gargano D. Gasparrini N. Giglietto F. Giordano M. Giroletti T. Glanzman G. Godfrey G. A. Gomez-Vargas I. A. Grenier S. Guiriec M. Gustafsson E. Hays J. W. Hewitt D. Horan T. Jogler G. Jóhannesson M. Kuss S. Larsson L. Latronico J. Li L. Li M. Llena Garde F. Longo F. Loparco P. Lubrano D. Malyshev M. Mayer M. N. Mazziotta J. E. McEnery M. Meyer P. F. Michelson T. Mizuno A. A. Moiseev M. E. Monzani A. Morselli S. Murgia E. Nuss T. Ohsugi M. Orienti E. Orlando J. F. Ormes D. Paneque J. S. Perkins M. Pesce-Rollins F. Piron G. Pivato T. A. Porter S. Rainò R. Rando M. Razzano A. Reimer O. Reimer S. Ritz M. Sánchez-Conde A. Schulz N. Sehgal C. Sgrò E. J. Siskind F. Spada G. Spandre P. Spinelli L. Strigari H. Tajima H. Takahashi J. B. Thayer L. Tibaldo D. F. Torres E. Troja G. Vianello M. Werner B. L. Winer K. S. Wood M. Wood G. Zaharijas S. Zimmer Deutsches Elektronen Synchrotron DESY D-15738 Zeuthen Germany W. W. Hansen Experimental Physics Laboratory Kavli Institute for Particle Astrophysics and Cosmology Department of Physics and SLAC National Accelerator Laboratory Stanford University Stanford California 94305 USA Department of Physics Stockholm University AlbaNova SE-106 91 Stockholm Sweden The Oskar Klein Centre for Cosmoparticle Physics AlbaNova SE-106 91 Stockholm Sweden Santa Cruz Institute for Particle Physics Department of Physics and Department of Astronomy and Astrophysics University of California at Santa Cruz Santa Cruz California 95064 USA Università di Pisa and Istituto Nazionale di Fisica Nucleare Sezione di Pisa I-56127 Pisa Italy Istituto Nazionale di Fisica Nucleare Sezione di Trieste I-34127 Trieste Italy Dipartimento di Fisica Università di Trieste I-34127 Trieste Italy Istituto Nazionale di Fisica Nucleare Sezione di Padova I-35131 Padova Italy Dipartimento di Fisica e Astronomia “G. Galilei” Università di Padova I-35131 Padova Italy Dept. of Physics and Wisconsin IceCube Particle Astrophysics Center University of Wisconsin Madison Wisconsin 53706 USA Istituto Nazionale di Fisica Nucleare Sezione di Pisa I-56127 Pisa Italy Istituto Nazionale di Fisica Nucleare Sezione di Bari I-70126 Bari Italy Istituto Nazionale di Fisica Nucleare Sezione di Torino I-10125 Torino Italy Dipartimento di Fisica Generale “Amadeo Avogadro” Università degli Studi di Torino I-10125 Torino Italy NASA Goddard Space Flight Center Greenbelt Maryland 20771 USA Laboratoire Univers et Particules de Montpellier Université Montpellier CNRS/IN2P3 Montpellier France Laboratoire Leprince-Ringuet École polytechnique CNRS/IN2P3 Palaiseau France Consorzio Interuniversitario per la Fisica Spaziale (CIFS) I-10133 Torino Italy INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica I-20133 Milano Italy Istituto Nazionale di Fisica Nucleare Sezione di Perugia I-06123 Perugia Italy Dipartimento di Fisica Uni

The dwarf spheroidal satellite galaxies (dSphs) of the Milky Way are some of the most dark matter (DM) dominated objects known. We report on γ-ray observations of Milky Way dSphs based on six years of Fermi Large Area Telescope data processed with the new Pass8 event-level analysis. None of the dSphs are significantly detected in γ rays, and we present upper limits on the DM annihilation cross section from a combined analysis of 15 dSphs. These constraints are among the strongest and most robust to date and lie below the canonical thermal relic cross section for DM of mass ≲100 GeV annihilating via quark and τ-lepton channels.

关键词： Gamma ray astronomy Particle dark matter Normal galaxies

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Updated search for spectral lines from Galactic dark matter interactions with pass 8 data from the Fermi Large Area Telescope

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Physical Review D 2015年第12期91卷 122002-122002页

作者： M. Ackermann M. Ajello A. Albert B. Anderson W. B. Atwood L. Baldini G. Barbiellini D. Bastieri R. Bellazzini E. Bissaldi R. D. Blandford E. D. Bloom R. Bonino E. Bottacini T. J. Brandt J. Bregeon P. Bruel R. Buehler S. Buson G. A. Caliandro R. A. Cameron R. Caputo M. Caragiulo P. A. Caraveo C. Cecchi E. Charles A. Chekhtman J. Chiang G. Chiaro S. Ciprini R. Claus J. Cohen-Tanugi J. Conrad A. Cuoco S. Cutini F. D’Ammando A. de Angelis F. de Palma R. Desiante S. W. Digel L. Di Venere P. S. Drell A. Drlica-Wagner C. Favuzzi S. J. Fegan A. Franckowiak Y. Fukazawa S. Funk P. Fusco F. Gargano D. Gasparrini N. Giglietto F. Giordano M. Giroletti G. Godfrey G. A. Gomez-Vargas I. A. Grenier J. E. Grove S. Guiriec M. Gustafsson J. W. Hewitt A. B. Hill D. Horan G. Jóhannesson R. P. Johnson M. Kuss S. Larsson L. Latronico J. Li L. Li F. Longo F. Loparco M. N. Lovellette P. Lubrano D. Malyshev M. Mayer M. N. Mazziotta J. E. McEnery P. F. Michelson T. Mizuno A. A. Moiseev M. E. Monzani A. Morselli S. Murgia E. Nuss T. Ohsugi M. Orienti E. Orlando J. F. Ormes D. Paneque M. Pesce-Rollins F. Piron G. Pivato S. Rainò R. Rando M. Razzano A. Reimer T. Reposeur S. Ritz M. Sánchez-Conde A. Schulz C. Sgrò E. J. Siskind F. Spada G. Spandre P. Spinelli H. Tajima H. Takahashi J. B. Thayer L. Tibaldo D. F. Torres G. Tosti E. Troja G. Vianello M. Werner B. L. Winer K. S. Wood M. Wood G. Zaharijas S. Zimmer Deutsches Elektronen Synchrotron DESY D-15738 Zeuthen Germany Department of Physics and Astronomy Kinard Lab of Physics Clemson University Clemson South Carolina 29634-0978 USA W.W. Hansen Experimental Physics Laboratory Kavli Institute for Particle Astrophysics and Cosmology Department of Physics and SLAC National Accelerator Laboratory Stanford University Stanford California 94305 USA Department of Physics Stockholm University AlbaNova SE-106 91 Stockholm Sweden The Oskar Klein Centre for Cosmoparticle Physics AlbaNova SE-106 91 Stockholm Sweden Department of Physics and Department of Astronomy and Astrophysics Santa Cruz Institute for Particle Physics University of California at Santa Cruz Santa Cruz California 95064 USA Università di Pisa and Istituto Nazionale di Fisica Nucleare Sezione di Pisa I-56127 Pisa Italy Istituto Nazionale di Fisica Nucleare Sezione di Trieste I-34127 Trieste Italy Dipartimento di Fisica Università di Trieste I-34127 Trieste Italy Istituto Nazionale di Fisica Nucleare Sezione di Padova I-35131 Padova Italy Dipartimento di Fisica e Astronomia “G. Galilei ” Università di Padova I-35131 Padova Italy Istituto Nazionale di Fisica Nucleare Sezione di Pisa I-56127 Pisa Italy Istituto Nazionale di Fisica Nucleare Sezione di Bari 70126 Bari Italy Istituto Nazionale di Fisica Nucleare Sezione di Torino I-10125 Torino Italy Dipartimento di Fisica Generale “Amadeo Avogadro ” Università degli Studi di Torino I-10125 Torino Italy NASA Goddard Space Flight Center Greenbelt Maryland 20771 USA Laboratoire Univers et Particules de Montpellier Université Montpellier CNRS/IN2P3 Montpellier France Laboratoire Leprince-Ringuet École polytechnique CNRS/IN2P3 Route de Saclay F91128 Palaiseau France Consorzio Interuniversitario per la Fisica Spaziale (CIFS) I-10133 Torino Italy INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica I-20133 Milano Italy Istituto Nazionale di Fisica Nucleare Sezione di Perugia I-06123 Perugia Italy Dipartime

Dark matter in the Milky Way may annihilate directly into γ rays, producing a monoenergetic spectral line. Therefore, detecting such a signature would be strong evidence for dark matter annihilation or decay. We search for spectral lines in the Fermi Large Area Telescope observations of the Milky Way halo in the energy range 200 MeV–500 GeV using analysis methods from our most recent line searches. The main improvements relative to previous works are our use of 5.8 years of data reprocessed with the Pass 8 event-level analysis and the additional data resulting from the modified observing strategy designed to increase exposure of the Galactic center region. We search in five sky regions selected to optimize sensitivity to different theoretically motivated dark matter scenarios and find no significant detections. In addition to presenting the results from our search for lines, we also investigate the previously reported tentative detection of a line at 133 GeV using the new Pass 8 data.

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Timing analysis of small aircraft transportation system (SATS)

Timing analysis of small aircraft transportation system (SAT...

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18th IEEE International Conference on Embedded and real-time computing Systems and Applications, RTCSA 2012

作者： Cheng, Albert M.K. Niktab, Homa Walston, Michael Real-Time Systems Laboratory Department of Computer Science University of Houston TX United States

ISBN: (纸本)9781467330176

The Small Aircraft Transportation System (SATS) protocol, developed at NASA, aims to increase air transportation access for smaller communities and improve the transportation of people, services, and goods by a more effective use of over 5,000 small public airports in the United States. By using model checking and I/O automata, a number of different groups have verified many of the operational properties of SATS. However, none of the published work considers the timing constraints of the protocol, delegating instead to the pilot the responsibility for providing appropriate delays and separation assurance among events. In this paper, we formally specify the delays and the deadlines for the landing component of the protocol for simultaneous approaches of several small aircraft. This helps increase pilot safety for landing in these small airports. Linear real-time Logic (LRTL), a subclass of real-time Logic, and its associated toolset are utilized to analyze and formally verify the timing constraints of the landing component of SATS. In addition, an algorithm for debugging a subset of LRTL models is proposed. © 2012 IEEE.

关键词： Air transportation

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Timing Analysis of Small Aircraft Transportation System (SATS)

Timing Analysis of Small Aircraft Transportation System (SAT...

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IEEE International Conference on Embedded and real-time computing Systems and Applications (RTCSA)

作者： Albert M.K. Cheng Homa Niktab Michael Walston Real-Time Systems Laboratory Department of Computer Science University of Houston TX USA

关键词： Timing Aircraft Protocols real time systems Airports Safety Automata

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ERRATUM: 'THE SECOND CATALOG OF ACTIVE GALACTIC NUCLEI DETECTED BY THE FERMI LARGE AREA TELESCOPE' (2011, ApJ, 743, 171)

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The Astrophysical Journal 2015年第1期806卷

作者： M. Ackermann M. Ajello A. Allafort E. Antolini W. B. Atwood M. Axelsson L. Baldini J. Ballet G. Barbiellini D. Bastieri K. Bechtol R. Bellazzini B. Berenji R. D. Blandford E. D. Bloom E. Bonamente A. W. Borgland E. Bottacini A. Bouvier J. Bregeon M. Brigida P. Bruel R. Buehler T. H. Burnett S. Buson G. A. Caliandro R. A. Cameron P. A. Caraveo J. M. Casandjian E. Cavazzuti C. Cecchi E. Charles C. C. Cheung J. Chiang S. Ciprini R. Claus J. Cohen-Tanugi J. Conrad L. Costamante S. Cutini A. de Angelis F. de Palma C. D. Dermer S. W. Digel E. do Couto e Silva P. S. Drell R. Dubois L. Escande C. Favuzzi S. J. Fegan E. C. Ferrara J. Finke W. B. Focke P. Fortin M. Frailis Y. Fukazawa S. Funk P. Fusco F. Gargano D. Gasparrini N. Gehrels S. Germani B. Giebels N. Giglietto P. Giommi F. Giordano M. Giroletti T. Glanzman G. Godfrey I. A. Grenier J. E. Grove S. Guiriec M. Gustafsson D. Hadasch M. Hayashida E. Hays S. E. Healey D. Horan X. Hou R. E. Hughes G. Iafrate G. Jóhannesson A. S. Johnson W. N. Johnson T. Kamae H. Katagiri J. Kataoka J. Knödlseder M. Kuss J. Lande S. Larsson L. Latronico F. Longo F. Loparco B. Lott M. N. Lovellette P. Lubrano G. M. Madejski M. N. Mazziotta W. McConville J. E. McEnery P. F. Michelson W. Mitthumsiri T. Mizuno A. A. Moiseev C. Monte M. E. Monzani E. Moretti A. Morselli I. V. Moskalenko S. Murgia T. Nakamori M. Naumann-Godo P. L. Nolan J. P. Norris E. Nuss M. Ohno T. Ohsugi A. Okumura N. Omodei M. Orienti E. Orlando J. F. Ormes M. Ozaki D. Paneque D. Parent M. Pesce- Rollins M. Pierbattista S. Piranomonte F. Piron G. Pivato T. A. Porter S. Rainò R. Rando M. Razzano S. Razzaque A. Reimer O. Reimer S. Ritz L. S. Rochester R. W. Romani M. Roth D. A. Sanchez C. Sbarra J. D. Scargle T. L. Schalk C. SGRO M. S. Shaw E. J. Siskind G. Spandre P. Spinelli A. W. Strong D. J. Suson H. Tajima H. Takahashi T. Takahashi T. Tanaka J. G. Thayer J. B. Thayer D. J. Thompson L. Tibaldo M. Tinivella D. F. Torres G. Tosti E. Troja Y. Uchiyama J. Vandenbroucke V. Vasileiou G. Vianello V. Vitale A. P. Waite E. Walla W. W. Hansen Experimental Physics Laboratory Kavli Institute for Particle Astrophysics and Cosmology Department of Physics and SLAC National Accelerator Laboratory Stanford University Stanford CA 94305 USA Istituto Nazionale di Fisica Nucleare Sezione di Perugia I-06123 Perugia Italy Dipartimento di Fisica Università degli Studi di Perugia I-06123 Perugia Italy Santa Cruz Institute for Particle Physics Department of Physics and Department of Astronomy and Astrophysics University of California at Santa Cruz Santa Cruz CA 95064 USA Department of Astronomy Stockholm University SE-106 91 Stockholm Sweden The Oskar Klein Centre for Cosmoparticle Physics AlbaNova SE-106 91 Stockholm Sweden Department of Physics Royal Institute of Technology (KTH) AlbaNova SE-106 91 Stockholm Sweden Istituto Nazionale di Fisica Nucleare Sezione di Pisa I-56127 Pisa Italy Laboratoire AIM CEA-IRFU/CNRS/Université Paris Diderot Service d'Astrophysique CEA Saclay 91191 Gif sur Yvette France Istituto Nazionale di Fisica Nucleare Sezione di Trieste I-34127 Trieste Italy Dipartimento di Fisica Università di Trieste I-34127 Trieste Italy Istituto Nazionale di Fisica Nucleare Sezione di Padova I-35131 Padova Italy Dipartimento di Fisica 'G. Galilei' Università di Padova I-35131 Padova Italy Dipartimento di Fisica 'M. Merlin' dell'Università e del Politecnico di Bari I-70126 Bari Italy Istituto Nazionale di Fisica Nucleare Sezione di Bari 70126 Bari Italy Laboratoire Leprince-Ringuet École polytechnique CNRS/IN2P3 Palaiseau France Department of Physics University of Washington Seattle WA 98195-1560 USA Institut de Ciències de l'Espai (IEEE-CSIC) Campus UAB 08193 Barcelona Spain INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica I-20133 Milano Italy Agenzia Spaziale Italiana (ASI) Science Data Center I-00044 Frascati (Roma) Italy National Research Council Research Associate National Academy of Sciences Washington DC 20001 USA ASI Science Data Center I-00044 Frascati (Roma)

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ARCHoN: Adaptive range control of hotzone cells in heterogeneous cellular networks

ARCHoN: Adaptive range control of hotzone cells in heterogen...

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2012 9th Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks, SECON 2012

作者： Yun, Ji-Hoon Shin, Kang G. Department of Electrical Eng. and Information Tech. Seoul National University of Science and Technology 232 Gongneung-ro Nowon-gu Seoul Korea Republic of Real-Time Computing Laboratory EECS Department University of Michigan Ann Arbor MI 48109-2121 United States

ISBN: (纸本)9781467319058

Heterogeneous networks (HetNets) are typified by cellular deployments with multiple types of cells of different sizes and overlapping coverage areas using a common frequency band. Especially, hotzone cells overlaid on a macrocell to cover hotspot areas are expected to prevail in HetNets, thus cost-effectively enhancing cellular capacity via spatial reuse of spectrum resource and offloading macrocells. In order to fully achieve such benefits, users need to be properly distributed/assigned to the overlaid hotzone cells such that the radio resources therein are fully utilized. To this end, we propose a new architecture called Adaptive Range Control of Hotzone Cells for Heterogeneous Networks (ARCHoN) that jointly controls the radio resource allocations and ranges of OFDMA-based hotzone cells. The use of cell ranges for distributing users in ARCHoN is advantageous in that it can be implemented within a conventional cell-selection framework without modifying user devices or an air interface. In ARCHoN, each cell allocates users radio (frequency, time and power) resources in a non-cooperative manner, deriving a sequence of allocations monotonically decreasing the entire load. For range control, two algorithms are proposed: per-cell and universal, which have a tradeoff between performance and computational complexity. The solution yielded by the combination of these radio resource and range control algorithms is analytically proven to converge to a unique fixed point. Our in-depth evaluation has shown ARCHoN to significantly improve the service quality of users;in an example simulation scenario, ARCHoN is shown to improve the signal-to-interference and noise ratios (SINRs) of users, on average, by up to 3.5 dB in downlink and 18.8 dB in uplink, over the case of the conventional handover framework. © 2012 IEEE.

关键词： Cells

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