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7th IET International conference on Advances in Power System control, Operation and Management, APSCOM 2006

作者： Rehtanz, C. Ltd. Corporate Research Beijing 100016 China

ISBN: (纸本)0863412467

The paper introduces a future network control architecture for electrical power transmission and distribution systems. The architecture is based on strictly modularized autonomous components providing all kinds of power system applications for monitoring, control and protection. These autonomous components interact via communication networks. The requirements for the communication are defined and discussed in detail. The proposed architecture is based on standard IT- solutions for the communication.

关键词： network architecture

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A novel framework for guaranteed serivice provisioning in optical network

A novel framework for guaranteed serivice provisioning in op...

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10th IEEE Singapore International conference on communications systems, ICCS 2006

作者： Siew, Chee Kheong Xue, Daojun Qin, Yang Schmitt, Jens Nanyang Technological University Singapore Singapore University of Kaiserslautern Germany

ISBN: (纸本)1424404118

This paper proposes a novel framework for the provisioning of guaranteed services in slot-based optical networks. We use the Time-Domain Wavelength Interleaved network (TWIN) architecture for the proof of concept. In this paper, we propose a framework comprising a control plane and a data plane. While the main functions of the control plane include admission control and capacity allocation to source-destination node pairs, the data plane functions settle operational issues such as traffic aggregation, buffering, and scheduling. We present a simple slot collision-resolution algorithm in the control plane and conduct extensive simulations to show the performance of the algorithm. In the data plane we show by means of the service curve theory that the aggregation and scheduling mechanism is able to provide an efficient per-flow guarantee. © 2006 IEEE.

关键词： Fiber optic networks

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The OCC-CDMA/OS for 4G Wireless

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IEEE VEHICULAR TECHNOLOGY MAGAZINE 2006年第3期1卷 12-21页

作者： Chen, Hsiao-Hwa Xiao, Yang Li, Jie Fantacci, Romano Natl Sun Yat Sen Univ Kaohsiung Taiwan Univ Memphis Memphis TN 38152 USA Univ Tsukuba Grad Sch Syst Tsukuba Ibaraki 305 Japan Univ Florence I-50121 Florence Italy

This paper starts with a review of 2G-3G CDMA based wireless systems from a network operation perspective. In particular, the challenges faced by current CDMA technologies will be addressed with the focus on their possible applications in 4G wireless networks. We will show that many advanced operational requirements in future 4G networks, such as high-speed burst traffic, cross-layer network design, seamless integration of different networks with and without infrastructure, will make all current CDMA technologies unsuitable due to their rigid and voice-centric physical layer architecture. To respond to the call for CDMA innovation, a novel OCC-CDMA/OS physical layer architecture is proposed in this paper for its possible applications in futuristic wireless networks. One of the most important features of OCC-CDMA/OS physical layer architecture is its unique elasticity, which facilitates implementation of a fully-adaptive CDMA transceiver to work harmonically with various advanced upper-layer designs in 4G networks. Many other technical issues on CDMA based 4G networks will also be discussed. It is concluded that OCC-CDMA/OS has a great potential for its applications in future 4G wireless networks.

关键词： Multiaccess communication Physical layer Wireless networks Telecommunication traffic communications technology 3G mobile communication Code standards communication standards Modulation coding Power control

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Analysis of Power control for Indoor Wireless Infrared CDMA communication

Analysis of Power Control for Indoor Wireless Infrared CDMA ...

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25th IEEE International Performance Computing and communications conference

作者： Aminzadeh-Gohari, Amir Pakravan, M. R. Sharif Univ Technol Dept Elect Engn Tehran 11365 Iran

ISBN: (纸本)1424401976

We study the uplink performance of wireless infrared code-division multiple access (CDMA) networks using OOK with optical orthogonal codes (OOC's). The analysis is performed in two cases assuming a cellular network architecture, in which all users are uniformly distributed in the cell's area. The first case is when all users transmit with the same power and no power control mechanism is used. Then, the system that deploys power control mechanism is analyzed and the performance improvements are demonstrated. The impact of imperfect power control which is caused by errors in channel estimation is also analyzed and the analytical and numerical results for all cases are included. The results clearly demonstrate the advantages of using power control algorithms for indoor infrared wireless systems that use OOC modulation techniques.

关键词： wireless infrared optical orthogonal codes (OOC's) power control near-far problem power control error (PCE) correlation receiver

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A case study based on an optical communication engineering project of the system upgrade for Shanghai Power Telecommunication network (ShPTnet)

A case study based on an optical communication engineering p...

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7th IET International conference on Advances in Power System control, Operation and Management, APSCOM 2006

作者： Chen, Sheng School of Information Technology and Computer Science University of Wollongong NSW 2500 Australia

ISBN: (纸本)0863412467

optical communication service is becoming a limelight in the Held of electricity supply control and management for recent years. On the one hand, most existing power manufacture communication such as control and dispatch systems are migrating from analog to digital formation, which requires stable data communication infrastructure with broadband capacity for ensuring upper layer signal transmission. On the other hand, the latest online business operations of power companies, such as power markets and sales information are exchanged and updated instantly, which also demands a scalable data network architecture as business expands. Thus, this paper presents a case study based on an ongoing engineering project from Shanghai Municipal Electric Power Company (SMEPC). In particular, it is a system upgrade project from legacy SDH network to the latest multiservice transport platform (MSTP), along with the major goal of broadening the capacity for the metropolitan optical communication infrastructure of SMEPC, namely the Shanghai Power Telecommunication network (ShPTnet).

关键词： optical communication

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Processors communications in the context of virtual switch framework using the CAN-IOP protocol

Processors communications in the context of virtual switch f...

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IEEE Region 10 conference (TENCON 2005)

作者： Tarek, Guesmi Salem, Hasnaoui Ecole Natl Ingn Tunis Lab SYSCOM Tunis Tunisia

ISBN: (纸本)9780780393110

A CORBA-compliant Object Request Broker (ORB) can facilitate data communication between dissimilar hardware, dissimilar operating systems, and modules written in different languages. Thus, in our proposal all control and management communication occurs within the context of the ORB. Our idea is based on a conception of a free architecture as a CORBA-based middleware for distributed embedded systems built on the CAN bus that realize a virtual switching architecture. This platform has to connect different physical network types. Thus we propose a solution to make it to behave as a router or a switcher. In our proposed framework we will use an ORB that may be conform to the forthcoming Real-time CORBA standards to be embedded in a network switch. Our target switch control environment includes support for Virtual Switching Interface (VSI) which is a protocol that allows multiple independent signalling processors to interact with a switch control processor. The scope of this paper is to conceive an application that controls a such switch using the VSI messaging protocol within the context of embedded ORB over a free Distributed and Real-time Embedded (DRE) architecture built on the CAN bus.

关键词： Data communication systems

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Design issues for edge nodes in Agile all-Photonic networks

Design issues for edge nodes in Agile All-Photonic Networks

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Workshop on High Performance Switching and Routing

作者： Radziwilowicz, Robert Khair, Mazen G. Paredes, Sofia A. Hall, Trevor J. Univ Ottawa SITE Ctr Res Photon Photon Network Technol Lab 800 King Edward Ave Ottawa ON K1N 6N5 Canada

ISBN: (纸本)0780395697

This paper raises the issues faced in edge node design for an Agile all-Photonic network (AAPN) and proposes solutions. The architecture discussed addresses several issues such as packet processing, traffic aggregation and encapsulation, buffers implementation, local scheduling, QoS provision, traffic monitoring and internal control mechanisms. The main goal of this work is to provide a detailed description of the functional modules considering technologies readily available now or immediately on the horizon.

关键词： optical networks TDM OBS traffic aggregation scheduling routing communication system planning

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optical burst switching network testbed in Japan

Optical burst switching network testbed in Japan

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optical Fiber communication conference, OFC 2006

作者： Kitayama, Ken-ichi Koga, Masafumi Morikawa, Hiroyuki Hara, Shinsuke Kawai, Masaaki Department of Electronic and Information Systems Osaka University Yamadaoka Suita Osaka 565-0871 Japan NTT Network Innovation Laboratories NTT Corporation 1-1 Hikari-no-oka Yokosuka Kanagawa 239-0847 Japan Department of Frontier Informatics The University of Tokyo Hongo Bunkyo-ku Tokyo 113-8656 Japan Fujitsu Limited 10-1 Morinosato-Wakamiya Atsugi Kanagawa 243-0197 Japan

A government-supported R&D initiative, "optical Burst Switching network" for five years, 2001-2005 is introduced. It is a comprehensive program, including the network architecture, wavelength reservation... 详细信息

ISBN: (纸本)1557528020

关键词： network architecture

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The KSTAR integrated control system based on EPICS

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FUSION ENGINEERING AND DESIGN 2006年第15-17期81卷 1829-1833页

作者： Kim, K. H. Ju, C. J. Kim, M. K. Park, M. K. Choi, J. W. Kyum, M. C. Kwon, M. Natl Fus Res Ctr Taejon 305806 South Korea

The Korea Superconducting Tokamak Advanced Research (KSTAR) control system will be developed with several subsystems, which consist of the central control system (e.g. plasma control, machine control, diagnostic control, time synchronization, and interlock systems) and local control systems for various subsystems. We are planning to connect the entire system with several networks, viz. a reflective-memory-based real-time network, an optical timing network, a gigabit Ethernet network for generic machine control, and a storage network. Then it will evolve into a network-based, distributed real-time control system. Thus, we have to consider the standard communication protocols among the subsystems and how to handle the various kinds of hardware in a homogeneous way. To satisfy these requirements, EPICS has been chosen for the KSTAR control. The EPICS framework provides network-based real-time distributed control, operating system independent programming tools, operator interface tools, archiving tools, and interface tools with other commercial and non-commercial software. The most important advantage of the use of the EPICS framework is in providing homogeneity of the system for the control system developer. The developer does not have to be concerned about the specifies of the local system, but can concentrate on the implementation of the control logic with EPICS tools. We will present the details of the integration issues and also will give a brief summary of the entire KSTAR control system from an integration point of view. (c) 2006 Elsevier B.V. all rights reserved.

关键词： tokamak control plasma control system real-time network distributed control system EPICS KSTAR

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network architectures for future optical networks

Network Architectures for future optical networks

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8th International conference on Transparent optical networks

作者： Jaeger, Monika T Syst ENPS Dept Network Architecture D-10589 Berlin Germany

ISBN: (纸本)1424402352

The suitability and efficiency of network architectures strongly depend on the service requirements and the mixture of services at different network levels. A case study has been performed in which five different service scenarios have been defined considering the characteristics of network operators. Starting with a service scenario which assumes only Layer 3 IP services, the amount of Layer 2 (Ethernet) and Layer 2 services (leased line) have been increased subsequently in the remaining four scenarios. Moreover, Layer I services have been differentiated with respect to broadband leased lines and narrowband services. The service scenarios have been applied to assess network architectures based on IP/MPLS, Ethernet and flexible and static optical systems, respectively. The impact of control plane implementations, i.e. GMPLS and ASON, have been analyzed. Ethernet is making its way into metro and core networks. The development of Ethernet services and technology and their integration into MPLS/GMPLS based networks is still hampered by open issues. Evolutions in this area will be a key differentiator for network architecture evolutions.

关键词： IP/MPLS GMPLS ethernet ASON

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