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2009 2nd IEEE International Conference on Broadband Network and Multimedia technology, IEEE IC-BNMT2009

作者： Peng, Li Shanshan, Wang Xingguo, Luo National Digital Switching System Engineering and Technological R. and D. Center Zhengzhou China

ISBN: (纸本)9781424450053

CdMA2000 1x EV-dO standard has a simple reverse traffic channel rate control scheme including reverse activity bit (rAB) and transition probability techniques. The rAB is used to specify whether the sector's reverse traffic channel is busy or not, and determined by comparison between the total received roT (rise over Thermal) and predefined threshold. Obviously, this determination method doesn't consider each access terminal's status or reflect the respective qualities of reverse traffic channels. Therefore, we propose a new scheme based on cluster to realize dedicated rate control. different clusters represent different reverse traffic channel qualities, and set different probabilities for rate transition. The propose scheme is validated through simulations. The results show that the proposed scheme can increase the reverse traffic throughout and average data rate. ©2009 IEEE.

关键词： Probability

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Ultra high throughput architectures for SHA-1 hash algorithm on FPGA

Ultra high throughput architectures for SHA-1 hash algorithm...

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2009 International Conference on Computational Intelligence and Software engineering, CiSE 2009

作者： Jiang, Liehui Wang, Yuliang Zhao, Qiuxia Shao, Yi Zhao, Xiaoli China National Digital Switching System Engineering and Technological R and D Center 450002 Zhengzhou China

ISBN: (纸本)9781424445073

This paper first presents a new architecture of SHA-1, which achieved the theoretical upper bound on throughput in the iterative architecture. And then based on the general proposed architecture, this paper implemented other two different kinds of pipelined architectures which are based on the iterative technique and the loop unrolling technique respectively. The latter with 40-stage pipeline reached a throughput up to 76.195Gbps on an Altera Stratix II GX EP2SGX90FF FPGA. At least to the authors' knowledge, this is the fastest published FPGA-based design at the time of writing. At last the proposed designs are compared with other published SHA-1 designs, the designs in this paper have obvious advantages both in speed and areas. ©2009 IEEE.

关键词： Throughput

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The development technology to recycle waste compact disk treatment by arc-discharge

The development technology to recycle waste compact disk tre...

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IEEE Conference on Industrial Electronics and Applications (ICIEA)

作者： Chia-Ching Lin Wen-Bin Lin Huann-Keng Chiang Chien-An Chen Department of Electrical Engineering Far East University Tainan Taiwan Graduate School of Engineering Science & Technology National Yunlin University of Science and Technology Yunlin Taiwan Department of Electrical Engineering National Yunlin University of Science and Technology Yunlin Taiwan Electrical Vehicle and System Verification Group R7 D Division Automotive Research and Testing Center Changhua Taiwan

ISBN: (纸本)9781424450459;9781424450466

High concentration alkali has been used for waste disk recycling treatment for many years. This paper proposes a novel process to handle recycling with a high voltage high frequency arc-discharge. This process can replace the original recycling process, which smashes the disks up and then separates metal cladding material from the disks, and reduce secondary pollution. The proposed approach instantly changes the metal cladding material temperature of the disk surface. The different coefficients of expansion between plastics and metal cladding material can be used to strip the disk surfaces. The variation of stripped quantity and the influence of polycarbonate (PC) structures were investigated using various voltages, frequencies, and discharging times. In the field tests, both the treatment time of waste disks and the influence of recycling quantities were improved effectively.

关键词： recycling Cd recording Inorganic materials Voltage Frequency Surface contamination Surface discharges Surface treatment Pollution Temperature

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A real-time rule-matching algorithm for the network security audit system

A real-time rule-matching algorithm for the network security...

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7th International Conference on Information, Communications and Signal Processing, ICICS 2009

作者： Jia, Fenggen Wang, Weiming Gao, Ming Lv, Chaoqi National Digital Switching System Engineering and Technology R and D Center University Information and Technology Zhengzhou China College of Information and Electronic Engineering Zhejiang Gongshang University Hangzhou China

ISBN: (纸本)9781424446575

Combined with the characteristics of network security audit system, paper introduced the idea of dynamic programming to pattern-matching algorithm, and gave the best dynamic matching algorithm, that is, by solving for matching pairs of local sub-problem, and for the number of different rules, (deleted) to find the best combination for the pattern-matching algorithms, then to achieve the strategy of optimal solution overall. Experimental results show that, the algorithm will greatly improve the efficiency of pattern matching in the network security auditing system. ©2009 IEEE.

关键词： Pattern matching

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A Study of Fast Network Self-healing Mechanism for distance Vector routing Protocol

A Study of Fast Network Self-healing Mechanism for Distance ...

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The First International Conference on Multimedia Information Networking and Security(第一届国际多媒体网络信息安全会议 MINES 2009)

作者： Bin WANG Jia ZHOU Jian-hui ZHANG Yun-fei GUO National Digital Switching System Engineering&Technological R&D Center Zhengzhou China College of E National Digital Switching System Engineering&Technological R&D Center Zhengzhou China

In order to improve the survivability of IP networks, this paper presents a fast self-healing mechanism for distance vector routing protocol called FS-dVP.(Fast Selfhealing distance vector protocol). The mechanism can dealing with network failures effectively through the precomputed multiple feasible next hops per destination. This local rerouting scheme guarantee the forwarding continuity in the convergence period. FS-dVP suppression of its failure notification to provides better stability and reduce network overhead of message updates. Simulations performed show that FS-rIP can dealing with the simultaneous failures of multiple arbitrary links effectively and can effectively improve network stability and availability.

关键词： distance vector routing protocol Fast failure recovery Multi next hop Local rerouting

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A Minimum Cost Active and Backup Path Algorithm with SrLG Constraints

A Minimum Cost Active and Backup Path Algorithm with SRLG Co...

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Pacific-Asia Conference on Circuits, Communications and systems, PACCS

作者： Jianhui Zhang Bin Wang Binqiang Wang Jinqiu ren National Digital Switching System Engineering & Technology R&D Center (NDSC) Zhengzhou Henan Province China

As more and more mission critical service are now transported over high-speed networks, it becomes an important issue to make use of the relativity of multiple link/node failures and improve transport performance for high-speed networks. In this paper, we propose a novel algorithm called low cost an S disjoint paths algorithm (LCSd for short) to establish a SrLG disjoint active path and backup path pair for network protection. Based on the TF algorithm, LCSd algorithm introduces the number of links which relate to the SrLG as a new constraint. Through link weight adjustment before the second time SPF calculate, the backup path can avoid the risk sharing with active path. Theoretical analysis and experiment results have shown that LCSd algorithm resolved the trap problem and path pair total cost non-optimal problem under SrLG disjoint constraint. Compared with rF and TF algorithms, LCSd algorithm is significantly superiority in the successful ratio to find feasible solution and can guarantee minimum total cost of active and backup path.

关键词： Costs radio frequency High-speed networks Protection Network topology Mission critical systems Heuristic algorithms Computer networks Circuits switching systems

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Neural Interface technology for rehabilitation: Exploiting and Promoting Neuroplasticity

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Physical Medicine and rehabilitation Clinics of North America 2010年第1期21卷 157-178页

作者： Wang, Wei Collinger, Jennifer L. Perez, Monica A. Tyler-Kabara, Elizabeth C. Cohen, Leonardo G. Birbaumer, Niels Brose, Steven W. Schwartz, Andrew B. Boninger, Michael L. Weber, douglas J. Department of Physical Medicine and Rehabilitation University of Pittsburgh Pittsburgh PA 15213 3471 Fifth Ave. Suite 202 United States Department of Bioengineering University of Pittsburgh Pittsburgh PA 15213 300 Technology Drive United States Quality of Life Technology (QoLT) Engineering Research Center Pittsburgh PA 15213 417 South Craig Street Room 303 United States Human Engineering Research Laboratories VA Pittsburgh Healthcare System Pittsburgh PA 15206 7180 Highland Drive Bldg. 4 151R-1 United States Department of Neurological Surgery University of Pittsburgh Pittsburgh PA 15213 United States Human Cortical Physiology Section Stroke Neurorehabilitation Section National Institute of Neurological Disorders and Stroke (NINDS) Bethesda MD 20892 10 Center Drive United States Institute of Medical Psychology and Behavioral Neurobiology University of Tuebingen D-72074 Tuebingen Gartenstr 29 Room 210 Germany Department of Neurobiology University of Pittsburgh Pittsburgh PA 15213 200 Lothrop Street E1440 BSTWR United States

This article reviews neural interface technology and its relationship with neuroplasticity. Two types of neural interface technology are reviewed, highlighting specific technologies that the authors directly work with: (1) neural interface technology for neural recording, such as the micro-ECoG BCI system for hand prosthesis control, and the comprehensive rehabilitation paradigm combining MEG-BCI, action observation, and motor imagery training;(2) neural interface technology for functional neural stimulation, such as somatosensory neural stimulation for restoring somatosensation, and non-invasive cortical stimulation using rTMS and tdCS for modulating cortical excitability and stroke rehabilitation. The close interaction between neural interface devices and neuroplasticity leads to increased efficacy of neural interface devices and improved functional recovery of the nervous system. This symbiotic relationship between neural interface technology and the nervous system is expected to maximize functional gain for individuals with various sensory, motor, and cognitive impairments, eventually leading to better quality of life. © 2010 Elsevier Inc.

关键词： Brain-computer interface Neural interface Neuroplasticity recording rehabilitation Stimulation

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A LdP fast protection switching scheme for Concurrent multiple failures in MPLS network

A LDP fast protection switching scheme for Concurrent multip...

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The First International Conference on Multimedia Information Networking and Security(第一届国际多媒体网络信息安全会议 MINES 2009)

作者： Jianhui Zhang Jia Zhou Jinqiu ren Binqiang Wang National Digital Switching System Engineering & Technology R&D Center (NDSC) Zhengzhou 450002 Henan Province China

In this paper, we provide a non route-calculating MPLS LdP fast protection switching scheme called LdP NrC-FPS scheme which is efficient in transient multi-failures in MPLS networks. This scheme makes full use of various working modes and configurable loop detection of LdP protocol.. When network failures happen, the scheme need not to compute routing again. The scheme uses Path Vector TLV and Hop Count TLV in LdP mapping message to avoid loop in transient multi-failure scenario. Furthermore, OAM mechanism has been introduced into LdP NrC-FPS scheme for accelerating fault recovery process. Compared with traditional fast rerouting strategies in IP and MPLS layer, it reduces the failure recovery time of rerouting and has the advantage of more efficient network resource utilization. Performance analysis shows that LdP NrC-FPS scheme outperforms than traditional IP fast reroute scheme and MPLS protection switching scheme at loop ratio , path unreachable ratio and control message overhead aspects.

关键词： Potection Sitching LdP NrC-FPS Concurrent Mltiple Filures Path Vector TLV Hop Count TLV OAM

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Scheduling in Fully Buffered Multistage switching Fabric based on round-robin

Scheduling in Fully Buffered Multistage Switching Fabric bas...

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IITA International Conference on Control, Automation and systems engineering

作者： Yue Zhang Fang dong Yuxiang Hu College of Information Engineering Zhengzhou University National Digital Switching System Engineering & Technological R&D Center

ISBN: (纸本)9781424445530

Current Memory-Space-Memory Clos switching fabric exhibits poor performance under unbalanced traffic. To eliminate the internal congestion within the switching fabric, by taking buffers into the internal links, this paper proposes an alternative Fully Buffered three-stage Clos switching fabric - FBC, which not only provides perfect throughput performance, but also exhibits better delay performance in heavy load by storing cells at the internal buffers. To employ an efficient and simple scheduling process, we provide a scheduling algorithm for FBC which is named distributed round-robin Scheduling algorithm (drrS). This algorithm takes advantages of high-efficiency of round-robin and is distributed in implementation, which makes the drrS prone to implement in hardware. At last, the simulation results prove that drrS is more effective.

关键词： Fully buffered Clos switching fabric Scheduling algorithm distributed round robin

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ABuGET: Measuring the Non-Cooperative Available Bandwidth

ABuGET: Measuring the Non-Cooperative Available Bandwidth

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International Conference on Information Science and engineering (ICISE)

作者： Shuangpeng Tian Jianmin Pang Zheng Shan Peng Liu China National Digital Switching System Engineering & Technological R&D Center (NDSC) Zhengzhou Henan China

Although several available bandwidth measurement tools exist, they usually require access at both ends of the measured path. In this paper, we present ABuGET, a single-ended tool for available bandwidth estimation against non-cooperative hosts. Comparing to other single-ended tools based ONE-dELAY mostly. Our measurement tool focus on utilizing ITPr (the improved PTr) algorithm to realize and exploiting TCP protocol options to initiate probing traffic. We describe the design of ABuGET. The comparison of ABuGET to Pathload (the most popular tool measuring the available bandwidth) used in simulation environments showed that our tool can provide better quality of measurements in non-cooperative environments.

关键词： Bandwidth Traffic control Probes delay Protocols Web and internet services Information science switching systems systems engineering and theory research and development

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