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A framework for evolutionary networking

A framework for evolutionary networking

引用

ACM SIGCOMM 2007 Workshops - 2nd ACM International Workshop on Mobility in the Evolving Internet Architecture, MobiArch'07

作者： Gupta, Gautam Kumar Raghavan, S.V. Network Systems Laboratory Department of Computer Science and Engineering Indian Institute of Technology Madras Chennai 600 036 India

In computer-Communication networks, addressing and routing have been fundamental issues that have challenged researchers - resulting in myriads of addressing and routing protocols. In recent times, self-configuration of nodes has become a necessity due to large number of networked devices and pervasive use of networks. Emergence of autonomic networks based on wireless mesh or ad hoc approach underline the need for self-configuration. Besides, success in sensor technology resulting in proliferation of wireless sensor networks is rapidly pushing the frontiers of self-configuration in large scale. The solutions reported hitherto in literature, has an interesting Addressing, Routing and Mobility (A.R.M.) issues have been tackled separately. In this work, we propose Protocol for Evolutionary Addressing (PEA) Framework, pronounced as "P", which solves the problem of addressing and routing in unison - thereby eliminating the need for separate routing algorithm. In PEA Framework, nodes assume addresses and self-configure the forwarding tables to reflect the changes in the network topology. Besides, PEA Framework enables self-configuration of nodes in a network so that the network naturally evolves (or readjusts) as it grows (or changes). We describe the framework, protocol, and evolution of network in addition to analyzing the time and message complexity of the protocol. © 2007 ACM.

关键词： network architecture

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Group-based relay protocol for reliable multicast services for future wireless networks

Group-based relay protocol for reliable multicast services f...

引用

作者： Chen, Yu-Hsun Chan, Hao-Po Wu, Eric Hsiao-Kuang Department of Computer Science and Information Engineering National Taiwan University Taipei Taiwan Network and Multimedia Institute Institute for Information Industry Taiwan Department of Computer Science and Information Engineering National Central University Chung-Li Taiwan

With the explosive growth of broadband Internet technologies, novel multicast services can be made available. The IEEE 802.11 Wireless LAN has been widely deployed driven by the unprecedented demand for ubiquitous wireless data services. The IEEE 802.11e standard has been further developed for offering classified services for various multimedia applications. However, the IEEE 802.11e does not support any MAC layer recovery for multicast frames. Additionally, while multicast receivers are located at different locations with different channel conditions, the source might compromise to transmit multicast frames at the lowest data rate. As the number of wireless multicast receivers grows, the number of retransmissions increases due to link errors or unexpected collisions. In this paper, we make use of multiple modulation types specified by IEEE 802.11 and present a group-based relay approach to multicast services over error-prone wireless networks.

关键词： Routing protocols

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Miniaturization of Electromagnetic Bandgap (EBG) structures with high-permeability magnetic metal sheet

Miniaturization of Electromagnetic Bandgap (EBG) structures ...

引用

IEEE International Symposium on Electromagnetic Compatibility, EMC 2007

作者： Toyota, Yoshitaka Iokibe, Kengo Koga, Ryuji Engin, Arif Ege Kim, Tae Hong Swaminathan, Madhavan Department of Communication Network Engineering Okayama University Okayama Japan Packaging Research Center School of Electrical and Computer Engineering Georgia Institute of Technology GA United States

ISBN: (纸本)1424413508

Electromagnetic bandgap (EBG) structures in a pair of parallel planes are quite effective for suppressing simultaneous switching noise, but they are too large to be applied to compact electronic devices. To miniaturize the EBG structures, we investigated an approach to interpose a high-permeability magnetic metal sheet between the parallel planes. The experimental results show that high permeability of the sheet shifts the stopband towards lower frequencies. This suggests that such sheets contribute to the miniaturization of the EBG structures. In addition, it is demonstrated that the imaginary part of the permeability can expand the stopband. © 2007 IEEE.

关键词： Magnetic permeability

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WSNVIEW system for wireless sensor network management

WSNVIEW system for wireless sensor network management

引用

11th IASTED International Conference on Internet and Multimedia Systems and Applications, IMSA 2007

作者： Chen, Jiann-Liang Lu, Hsi-Feng Lee, Mei-Yu Department of Computer Science and Information Engineering National Dong Hwa University Hualien Taiwan Computer and Network Center National Hualien University of Education Hualien Taiwan

ISBN: (纸本)9780889866782

Many wireless sensor networks applications have been investigated such as in scientific, medical, commercial, and military domains, to perform sensing and monitoring in physical world. Large-scale wireless sensor networks are composed of hundreds or thousands of autonomous sensor nodes. Effectively managing sensor networks is a major challenge. An SNMP-like sensor network management system, WSNView system, is developed to provide a convenient and effective means of monitoring and managing sensor network operations. The WSNView system can automatically search for any sensor node and demonstrate its connection relations among other sensor nodes. This system can also monitor, collect and analyze networks. network operation can be modified based on the measured and analysis data. The network can automatically display information about and the reasons for abnormal phenomenon. The management of configuration, performance and faults in a network is performed according to the collected information. Experimental results show that the designed WSNView system is effective in wireless sensor networks.

关键词： Sensor nodes

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Playing Devil’s Advocate: Inferring Sensitive Information from Anonymized network Traces 14

Playing Devil’s Advocate: Inferring Sensitive Information f...

引用

14th Symposium on network and Distributed System Security, NDSS 2007

作者： Coull, Scott E. Wright, Charles V. Monrose, Fabian Collins, Michael P. Reiter, Michael K. Department of Computer Science Johns Hopkins University BaltimoreMD United States CERT/Network Situational Awareness Software Engineering Institute Carnegie Mellon University United States Electrical & Computer Engineering Department Computer Science Department Carnegie Mellon University PittsburghPA United States

Encouraging the release of network data is central to promoting sound network research practices, though the publication of this data can leak sensitive information about the publishing organization. To address this dilemma, several techniques have been suggested for anonymizing network data by obfuscating sensitive fields. In this paper, we present new techniques for inferring network topology and deanonymizing servers present in anonymized network data, using only the data itself and public information. Via analyses on three different network datasets, we quantify the effectiveness of our techniques, showing that they can uncover significant amounts of sensitive information. We also discuss prospects for preventing these deanonymization attacks. © 2007Proceedings of the Symposium on network and Distributed System Security, NDSS 2007. All Rights Reserved.

关键词： network topology

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Smurf-based Distributed Denial of Service (DDoS) attack amplification in internet

Smurf-based Distributed Denial of Service (DDoS) attack ampl...

引用

2nd International Conference on Internet Monitoring and Protection, ICIMP 2007

作者： Kumar, Sanjeev IEEE Network Research Lab. Department of Electrical/Computer Engineering University of Texas - PanAmerican Edinburg TX 78541 United States

ISBN: (纸本)0769529119

The Smurf-based distributed denial of service (DDoS) attack is an amplification attack where the attacker uses unprotected intermediate networks to amplify the attack traffic load and direct it to the victim computer. In this paper, we investigate the factors that contribute to the amplification of the smurf attack traffic and understand the relation among the original attack traffic, intermediate unprotected network and the final amplified attack traffic. We also define a new term called attack amplification factor which represents the degree of amplification that original attack traffic undergoes during its transmission towards the victim computer. It is also shown in this paper that utilizing this attack, it is possible for an attacker to just use a dialup modem and an unprotected intermediary network to exhaust even an ultra high speed optical line such as OC-192 of the victim network. © 2007 IEEE.

关键词： Distributed computer systems

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Quantum simulations of dual gate mosfet devices: Building and deploying community nanotechnology software tools on ***

Quantum simulations of dual gate mosfet devices: Building an...

引用

作者： Ahmed, Shaikh Klimeck, Gerhard Kearney, Derrick McLennan, Michael Anantram, M.P. Network for Computational Nanotechnology Purdue University West Lafayette IN 4790 United States Department of Electrical and Computer Engineering University of Waterloo Ontario Canada

Undesirable short-channel effects associated with the relentless downscaling of conventional CMOS devices have led to the emergence of new classes of MOSFETs. This has led to new and unprecedented challenges in computational nanoelectronics. The device sizes have already reached the level of tens of nanometers where quantum nature of charge-carriers dominates the device operation and performance. The goal of this paper is to describe an on-going initiative on *** to provide new models, algorithms, approaches, and a comprehensive suite of freely-available web-based simulation tools for nanoscale devices with capabilities not yet available commercially. Three software packages nanoFET, nanoMOS and QuaMC are benchmarked in the simulation of a widely-studied high-performance novel MOSFET device. The impact of quantum mechanical effects on the device properties is elucidated and key design issues are suggested. © 2007 World Scientific Publishing Company.

关键词： MOSFET devices

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Thermally actuated multiband voltage controlled oscillator design with MEMS switch

Thermally actuated multiband voltage controlled oscillator d...

引用

Military Communications Conference, MILCOM 2007

作者： Shumin, Zhang Wansheng, Su Zaghloul, Mona E. Department of Electrical and Computer Engineering George Washington University Hughes Network Systems LLC 11717 Exploration Lane Germantown MD 20876 United States

ISBN: (纸本)1424415136

Wireless communication systems often require multiband receivers. The multiband operation is controlled by the voltage controlled oscillator (VCO). MOSFET switches are commonly used in the switched capacitor array in multiband VCOs, but the noisy MOSFET switches have a great impact on the phase noise performance of the system. This paper presents a thermally actuated MEMS switch used in a differential Colpitts VCO. The phase noise performance is 21 dB better than MOSFET switched VCO circuit. © 2007 IEEE.

关键词： Variable frequency oscillators

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High performance MPI on IBM 12x infiniband architecture

High performance MPI on IBM 12x infiniband architecture

引用

21st International Parallel and Distributed Processing Symposium, IPDPS 2007

作者： Vishnu, Abhinav Benton, Brad Panda, Dhabaleswar K. Network Based Computing Lab. Department of Computer Science and Engineering Ohio State University IBM Austin 11501 Burnet Road Austin TX 78758

ISBN: (纸本)1424409101

InfiniBand is becoming increasingly popular in the area of cluster computing due to its open standard and high performance. I/O interfaces like PCI-Express and GX+ are being introduced as next generation technologies to drive InfiniBand with very high throughput. HCAs with throughput of 8x on PCI-Express have become available. Recently, support for HCAs with 12x throughput on GX+ has been announced. In this paper, we design a Message Passing Interface (MPI) on IBM 12x Dual-Port HCAs, which consist of multiple send/recv engines per port. We propose and study the impact of various communication scheduling policies (binding, striping and round robin). Based on this study, we present a new policy, EPC (Enhanced point-to-point and collective), which incorporates different kinds of communication patterns;point-to-point (blocking, non-blocking) and collective communication, for data transfer. We implement our design and evaluate it with micro-benchmarks, collective communication and NAS parallel benchmarks. Using EPC on a 12x InfiniBand cluster with one HCA and one port, we can improve the performance by 41% with ping-pong latency test and 63-65% with the unidirectional and bi-directional bandwidth tests, compared with the default single-rail MPI implementation. Our evaluation on NAS Parallel Benchmarks shows an improvement of 7-13% in execution time for Integer Sort and Fourier Transform. © 2007 IEEE.

关键词： Cluster analysis

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Low-stress interconnection for flip chip BGA employing lead-free solder bump

Low-stress interconnection for flip chip BGA employing lead-...

引用

57th Electronic Components and Technology Conference

作者： Uchida, Masayuki Ito, Hisashi Yabui, Ken Nishiuchi, Hideo Togasaki, Takashi Higuchi, Kazubito Ezawa, Hirokazu Corporate Manufacturing Engineering Center TOSHIBA Corp. Japan Advanced ULSI Process Engineering Department Semiconductor Company TOSHIBA Corp. Japan Global Production and Logistics Management Center Personal Computer and Network Company TOSHIBA Corp. Japan

ISBN: (纸本)9781424409846

Flip chip bonding technology has been widely used for interconnection in high-end logic LSI employing lead-ricb solder bumps. Recently, from an environmental issue, it is desired that the lead-rich solder should be replaced by lead-free solder. However, the stress at the interconnection after flip chip bonding reflow cannot be relaxed with lead-free solder bumps because of their poor creep properties. Since the stress causes delamination of the low-k layer under bumps and electrical open errors, the improvement of the solder bump material and the flip chip bonding process have been necessary for stress relaxation. In this study, we investigated the creep properties of Sn-0.7Cu and Sn-3.5Ag bumps by the indentation method. As a result, it was found that the creep properties of Sn-0.7Cu bumps was more suitable for stress relaxation than those of Sn-3.5Ag. Moreover, we confirmed that a low-stress interconnection had been achieved by employing Sn-0.7Cu bumps. The stress at the interconnection was less than the delaminating stress of the low-k layer. In addition, when the flip chip bonding was carried out by the reflow with the post-annealing, in which the temperature was held for a period of time at 200 degrees C during reflow cooling part, the maximum stress in the low-k layer has been reduced by more than 36% in comparison with the low-k delarninating stress. Furthermore, it was found that the stresses at the flip chip joints were relaxed because of the increase of the creep rate which was caused by the reflow with the post-annealing.

关键词： Flip chip devices

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