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Mobile IPV6 wireless test-bed experience

Mobile IPV6 wireless test-bed experience

2005 13th IEEE International Conference on Networks jointly held with the 2005 7th IEEE Malaysia International Conference on communications

作者： Yong, Chu Eu Khatun, Sabira Ali, Borhanuddin Mohd Othman, Mohamed Department of Computer and Communication System Engineering Faculty of Engineering Universiti Putra Malaysia Department of Communication Technology and Network Faculty of Science Computer Universiti Putra Malaysia

ISBN: (纸本)1424400007

Mobility support for Internet devices is very important, since mobile computing is getting more widespread. Since these devices are wireless and therefore mobile, they will derive great benefit form Mobile IPv6. Mobile IPv6 was designed to be a natural outgrowth of Mobile IPv4, just as IPv6 itself was designed to be a natural outgrowth of IPv4. A wireless test-bed was setup to see the performance of the handover. The wireless test-bed consists of hardware, software and network analyzes tools to monitor the handover operation. The hardware consists of a multicast router, 2 access point, home agent, mobile node. We analyzed packet loss, packet delay and handover delay in Mobile IPv6 wireless test-bed. Finally, it is concluded the average packet delay is 0.7s, the handover delay for the first handover (macro-mobility) is 4.4s (44 packet loss) and 4.2s (42 packet loss) during the second handover (micro-mobility). The behavior and performance of Mobile IPv6 scheme can be seen. © 2005 IEEE.

关键词： Wireless telecommunication systems

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Performance evaluation of mobile IPv6 wireless test-bed in micro-mobility environment with hierarchical design and multicast buffering 1

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1st Asian Internet engineering Conference, AINTEC 2005

作者： Eu, Yong Chu Khatun, Sabira Ali, Borhanuddin Mohd Othman, Mohamed Department of Computer and Communication Systems Engineering Faculty of Engineering University Putra Malaysia Department of Communication Technology and Network Faculty of Computer Science University Putra Malaysia

ISBN: (数字)9783540322924

ISBN: (纸本)3540308849

Mobile 1Pv6 allows mobile devices always addressable by its home address wherever it is located. In this paper the focus is given on a micromobility based test-bed development with improved scheme. The test-bed consists of both hardware and software including four personal computers and one laptop. The laptop is used as Mobile Node (MN), two personal computers are functioned as access points, one personal computer as Home Agent (HA) and the other one is used as Foreign Multicast Router (MR). This test-bed is used to analyze the Mobile 1Pv6 handover delay, packet delay and packet loss in real wireless environment. We measured two scenarios those are Mobile 1Pv6 handover and Enhanced Mobile 1Pv6 with multicast function and hierarchical design. Finally, it is concluded that the proposed handover scheme reduces the handover delay from 4.4s to 0.2s, packet delay from 0.7s to 0.109s and from 44 packet loss to zero packet loss during handover. This gives advantages of zero packet loss and lower handover delay which can significantly improve micro mobility performance 3rd and 4th Generation mobile telephone technology and for beyond. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Hierarchical systems

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Theoretical and experimental results of energy based swinging up control for a remotely driven acrobot

Theoretical and experimental results of energy based swingin...

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作者： Xin, Xin Yamasaki, Masahiro Omasa, Kazuhisa Department of Communication Engineering Faculty of Computer Science and System Engineering Okayama Prefectural University 111 Kuboki Soja Okayama 719-1197 Japan

ISBN: (纸本)008045108X

The swinging up control for a remotely driven Acrobot (RDA) is studied and an energy based controller is designed via the Lyapunov stability theory. The analysis of convergence of the energy as well as the motion of the RDA under the controller is presented. The conditions on control parameters for achieving a successful swinging up control are given. Furthermore, simulation and experimental results are provided to validate the presented theoretical results. Copyright © 2005 IFAC.

关键词： Lyapunov methods

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Multicast based and fast handover scheme in mobile IPv6 wireless network

Multicast based and fast handover scheme in mobile IPv6 wire...

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2005 IEEE International Workshop on Antenna Technology: Small Antennas and Novel Metamaterials, IWAT 2005

作者： Eu, Yong Chu Khatun, Sabira Ali, Borhanuddin Mohd Othman, Mohamand Department of Computer and Communication System Engineering Faculty of Engineering University Putra Malaysia 43200 Serdang Selangor Malaysia Department of Communication Technology and Network Faculty of Science Computer University Putra Malaysia 43200 Serdang Selangor Malaysia

Billions of portable computing devices such as mobile phone, laptop and palmtop computers are becoming widely available. Since these devices are wireless and therefore mobile, they will derive great benefit form Mobile IPv6. The main goal of Mobile IPv6 is that a mobile node is always addressable by its home address, whether it is currently attached to its home link or is away from home. Mobile IPv6 enables applications running on an Internet node to survive physical reconnection by inserting a few additional features at the network layer In this paper focus is given on a micro-mobility base test-bed development with improved algorithm. The test-bed consists of both hardware and software including four personal computers and one laptop. Laptop is used as mobile host (MH), two personal computers is acting as access point, one personal computer becomes home agent (HA) and one personal computer is used as multicast router (ML). This test-bed is used to verify the theoretical enhancement of micromobility handover algorithm and results (packet loss, handover delay and quality of service). There is no signaling traffic overload between MH, HA and correspondent host (CH), low handover delay-approximately below I Oms and good reception of video stream. © 2005 IEEE.

关键词： Multicasting

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Abstracts from the 6th International Conference on the engineering of Sport, 10-14 July 2006, Olympic Hall, Munich, Germany Abstracts

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SPORTS engineering 2006年第2期9卷 107-127页

作者： [Anonymous] University of Massachusetts Lowell USA Science & Mathematics Department Kettering University Flint USA University of Illinois USA Western Michigan University USA Washington State University USA Casecade Engine USA Kanazawa University Japan Sumitomo Light Metal Japan Massachusetts Institute of Technology USA Nanyang Technological University Bioengineering Singapore University of Vienna Anthropology Austria Department of Mechanical Engineering University of Bath UK INSA Lyon France PETZL France Sports Materials Research Group University of Birmingham UK Laboratoire de Modélisation des Activités Sportives Bourget du Lac France Technical University Kaiserslautern Germany Department of Engineering Mechanics United States Air Force Academy Colorado Springs USA SRAM Corporation Colorado Springs USA Sports Engineering Research Group University of Sheffield UK Sports Engineering CSES Sheffield Hallam University USA Sports Engineering CSES Sheffield Hallam University UK Technische Universität München Germany Rush University Medical Center Chicago USA Faculty of Sports Science Department of Sport Equipment & Materials TU München Germany RMIT University Australia Institute of Health and Sports Sciences University of Tsukuba Ibaraki Japan Machine and Control Department Polytechnic University Kanagawa Japan SRI Sports Ltd. Hyogo Japan SRI Research and Development Ltd. Hyogo Japan Mizuno Corporation Osaka Japan Fukuoka Institute of Technology Fukuoka Japan University of Limerick Éire Graduate School of Engineering Hokkaido University Japan Faculty of Engineering Kitami Institute of Technology Japan University of Calgary Canada TaylorMade-adidas Golf Company USA Davis Mechanical Engineering University of California USA Davis Mechanical & Aeronautical Engineering University of California USA University of Wales Institute Cardiff Cardiff School of Sport UWIC Cardiff Cardiff School of Sport UWIC Wales Loughborough University UK Cranfield University UK Cr

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Innovative approach to radio propagation modeling in urban and suburban areas

Innovative approach to radio propagation modeling in urban a...

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Joint 9th International Conference on Electromagnetics in Advanced Applications, ICEAA 2005 and 11th European Electromagnetic Structures Conference, EESC 2005

作者： Blaunstein, N. Yarkoni, N. Katz, D. Department of Communication System Engineering Faculty of Applied Science and Engineering Ben-Gurion University of the Negev Beer-Sheva Israel

ISBN: (纸本)8882020932

This paper presents a novel approach to radio propagation modeling in urban areas. While the development of the approach was mainly aimed at Fixed Wireless Access scenarios, it is also suitable for mobile cellular system applications and others. The approach is based upon statistical treatment of the target area. The resulting propagation model takes into account parameters of the built-up area, such as building density, building size, building height distribution and more. Using those parameters better prediction of the propagation loss can be achieved, compared to commonly used models. The model was developed in Ben-Gurion University in a research supported by InnoWave- ECI Telecom, and it was tested by InnoWave's network planning department, using the vastly deployed MultiGain Wireless (MGW) FWA system.

关键词： Wave propagation

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Impact of inter-cell interference on capacity in the joint multiple access (CDMA and SDMA) system

Impact of inter-cell interference on capacity in the joint m...

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2005 Asia-Pacific Conference on communications

作者： Ng, Chee Kyun Ismail, Mahamod Ali, Borhanuddin Mohd Khatun, Sabira Jamuar, Sudhanshu Shekhar Department of Computer and Communication Systems Engineering Faculty of Engineering Universiti Putra Malaysia Malaysia Department of Electrical and Electronic Engineering Faculty of Engineering Universiti Putra Malaysia Malaysia Department of Electrical Electronic and System Engineering Faculty of Engineering Universiti Kebangsaan Malaysia Malaysia

ISBN: (纸本)0780391322

Spatial filtering using smart antenna has emerged as a promising technique to improve the performance of cellular systems. Cell splitting and sectorisation in CDMA systems could result in an increase in system capacity. In this paper, we investigate the impact of inter-cell interference on reverse link capacity in a joint multiple access system arising from the combination of CDMA and SDMA systems. The system capacity of CDMA and SDMA systems is reviewed individually. The co-channel and antenna side-lobes interferences in SDMA systems due to the randomly located mobile users in a non-uniform traffic cell are studied. Therefore, the most realistic reverse link capacity improvement of the joint multiple access system is presented here by taking into consideration both intra-sector and inter-sector interferences. The results are based on the system parameters of CDMA and SDMA systems. © 2005 IEEE.

关键词： Code division multiple access

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Performance of LAS-CDMA system using smart antenna

Performance of LAS-CDMA system using smart antenna

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2005 13th IEEE International Conference on Networks jointly held with the 2005 7th IEEE Malaysia International Conference on communications

作者： Ng, Chee Kyun Mohd Ali, Borhanuddin Khatun, Sabira Jamuar, Sudhanshu Shekhar Ismail, Mahamod Department of Computer and Communication Systems Engineering Faculty of Engineering Universiti Putra Malaysia Malaysia Department of Electrical and Electronic Engineering Faculty of Engineering Universiti Putra Malaysia Malaysia Department of Electrical Electronic and System Engineering Faculty of Engineering Universiti Kebangsaan Malaysia Malaysia

ISBN: (纸本)1424400007

The choice of CDMA spreading sequences predetermines the properties of the system. The properties of large area synchronous (LAS) CDMA system have been demonstrated an interference free window (IFW) compared to traditional CDMA systems. This IFW property, however, has a limited delay-offset range. It is not always possible that all the channel-induced multipath delay spread components will arrive within IFW delay-offset range if the conventional antenna is employed. In this paper, the high directive narrow beam of smart antenna system is employed to direct all the multipath propagation components to arrive within the IFW range. Moreover, smart antenna system with its mathematical model is described. The reduction of multipath propagation in smart antenna system is also described. Finally, system performance analysis in terms of BER and maximum delay spread in both conventional and smart antennas are presented. © 2005 IEEE.

关键词： Code division multiple access

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Space Division Duplex (SDD) system using smart antenna

Space Division Duplex (SDD) system using smart antenna

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2005 IEEE International Workshop on Antenna Technology: Small Antennas and Novel Metamaterials, IWAT 2005

作者： Ng, Chee Kyun Khatun, Sabira Ali, Borhanuddin Mohd Jamuar, Sudhanshu Shekhar Ismail, Mahamod Department of Computer and Communication Systems Engineering Faculty of Engineering Universiti Putra Malaysia Malaysia Department of Electrical and Electronic Engineering Faculty of Engineering Universiti Putra Malaysia Malaysia Department of Electrical Electronic and System Engineering Faculty of Engineering Universiti Kebangsaan Malaysia Malaysia

The most important property in wireless systems, when it comes to increasing spectral efficiency, is eliminating interference. Recently, there are several new multiple access schemes and duplexing systems have been introduced in wireless systems to overcome several major interferences such as inter symbol interference, multiple access interference and adjacent cell interference. In this paper, we introduce a new duplexing system so-called space division duplex which can eliminate all kinds of interference. This new duplexing system consists of smart antenna's multiple steered narrow beams and orthogonal large area synchronous spread spectrum codes. The purpose is to increase system capacity while maintain its zero correlation window characteristics. The major types of interference and the properties of large area synchronous codes to combat these major interferences are studied. The overviews of code division duplexing system applying these orthogonal smart codes in wireless environment are analyzed. These analyses have shown that the number of orthogonal codes utilization is limited. The proposed solutions of space division duplexing system with several advantages are presented. Besides that, the code reuse concept is proposed to overcome the limitation of orthogonal codes. Finally, the system performances in term of spectral efficiency and capacity are presented. © 2005 IEEE.

关键词： Space division multiple access

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Edge detection using clustering algorithms

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WSEAS Transactions on computers 2005年第5期4卷 417-423页

作者： Sirin, Tuba Saglam, Mehmet Izzet Erer, Isin Gokmen, Muhittin Informatics Institute Advanced Technologies in Engineering Computer Science and Engineering Istanbul Technical University Istanbul 34469 Turkey Informatics Institute Advanced Technologies in Engineering Satellite Communication and Remote Sensing Program Istanbul Technical University Istanbul 34469 Turkey Faculty of Electrical and Electronic Engineering Electronics and Communication Department Istanbul Technical University Istanbul 34469 Turkey Faculty of Electrical and Electronic Engineering Computer Engineering Department Istanbul Technical University Istanbul 34469 Turkey

Edge detection is an important topic in image processing and a main tool in pattern recognition and image segmentation. Many edge detection techniques are available in the literature. 'A number of recent edge detectors are multiscale and include three main processing steps: smoothing, differentiation and labeling' (Ziau and Tabbone, 1997). This paper, presents a proposed method which is suitable for edge detection in images. This method is based on the use of the clustering algorithms (Self-Organizing Map (SOM), K-Means) and a gray scale edge detector (Canny, Generalized Edge Detector (GED)). It is shown that using the grayscale edge detectors may miss some parts of the edges which can be found using the proposed method.

关键词： Edge detection

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