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IP over optical multicasting for large-scale video delivery

IP over optical multicasting for large-scale video delivery

引用

Network Architectures, Management, and Applications V

作者： Jin, Yaohui Hu, Weisheng Sun, Weiqiang Guo, Wei State Key Laboratory on Advanced Optical Communication System and Network Shanghai Jiao Tong University Shanghai 200240 China

ISBN: (纸本)9780819469472

In the IPTV systems, multicasting will play a crucial role in the delivery of high-quality video services, which can significantly improve bandwidth efficiency. However, the scalability and the signal quality of current IPTV can barely compete with the existing broadcast digital TV systems since it is difficult to implement large-scale multicasting with end-to-end guaranteed quality of service (QoS) in packet-switched IP network. China 3TNet project aimed to build a high performance broadband trial network to support large-scale concurrent streaming media and interactive multimedia services. The innovative idea of 3TNet is that an automatic switched optical networks (ASON) with the capability of dynamic point-to-multipoint (P2MP) connections replaces the conventional IP multicasting network in the transport core, while the edge remains an IP multicasting network. In this paper, we will introduce the network architecture and discuss challenges in such IP over Optical multicasting for video delivery.

关键词： Multicasting

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Design of broadband chirped mirrors with different initial designs

Design of broadband chirped mirrors with different initial d...

引用

2007 Conference on Lasers and Electro-Optics - Pacific Rim, CLEO/PACIFIC RIM

作者： Lingling, Chen Zhigang, Zhang State Key Laboratory of Advanced Optical Communication System and Networks University of Beijing 5 Yiheyuan Rd Beijing 100871 China

We present precisely paired chirped mirrors with controlled reflectivity, group delay and group delay dispersion of octave spanning mirror set for two different initial designs. We show the comparison of results of pa... 详细信息

ISBN: (纸本)1424411734

关键词： Group delay

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On QoS guarantee in MPLS network with software deadline awareness

On QoS guarantee in MPLS network with software deadline awar...

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Network Architectures, Management, and Applications V

作者： Gao, Yu Jin, Yaohui Cheng, Hong Yu, Yingdi Sun, Weiqiang Guo, Wei Hu, Weisheng State Key Laboratory on Fiber-Optic Local Area Networks and Advanced Optical Communication System Shanghai Jiao Tong University Shanghai 200030 China

ISBN: (纸本)9780819469472

With the increasing number of internet users, more and more real-time services are added into the network, such as IPTV, online-video, Voice over IP, etc. As we know, throughput is a highly important performance criterion for scheduling algorithms of networks. Besides throughput, these growing real-time services are very sensitive to delay variance termed as jitter. Therefore, high performance scheduling algorithm should achieve good performance in terms of throughput, delay, jitter and fairness together. Scheduling algorithm with deadline-awareness employed in packet switching plays a key role in QoS guarantees. Although traditional hard-deadline can provide guarantee on in-node delay-deadline criteria, the end-to-end delay-deadline criteria cannot be guaranteed due to the characteristic of hard-deadline, while the delay-deadline guaranteed throughput is low. Thus, soft-deadline scheduling algorithm has been proposed. In this paper, we investigate and compare the classical hard-deadline and soft-deadline switching algorithm. A new scheme "Bonus system" is proposed in order to realize the idea of soft-deadline switching algorithm. Bonus system based on soft-deadline is compared with classical Early-Deadline First scheme based on hard-deadline, which shows that Bonus system has better performance in End-to-End deadline guarantee.

关键词： Wireless networks

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Joint scheduling of computation and network resource in optical grid

Joint scheduling of computation and network resource in opti...

引用

International Conference on Information, Communications and Signal Processing

作者： Yaohui Jin Yan Wang Wei Guo Weiqiang Sun Weisheng Hu State Key Laboratory on Advanced Optical Communication System and Network Shanghai Jiaotong University Shanghai China

ISBN: (纸本)9781424409822;1424409829

Although there are some researches have been done on the testbeds or architectures for optical grid applications, few efforts have been made on the scheduling problem for the optical grid application in theoretical details. When optical networks are considered as resources and jointly scheduled with other grid resources, communication contention must be taken into consideration for efficient task scheduling. This paper analyzes two schemes for reducing the communication contention in joint scheduling of computation and network resources for optical grid, one is the adaptive routing scheme and the other is grid resource selection scheme. The adaptive routing scheme, that was proposed in another paper [16] can detour the heavy traffic and find an earliest start route for each edge scheduling. A multilevel method for grid resource selection scheme is proposed in this paper, which help to schedule tasks onto the nearby resources, leading to a reduction in the average data transferred across individual links. Simulation results show that when we employ the two schemes together in the joint scheduling model, most of the communication contention can be removed, producing the smallest schedule length with relatively lower link utilization.

关键词： Processor scheduling Computer networks Grid computing Optical computing Optical fiber networks Routing Testing Computer architecture Adaptive optics Telecommunication traffic

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Channel zapping in IP over optical two-layer multicasting for large scale video delivery

Channel zapping in IP over optical two-layer multicasting fo...

引用

International Conference on Information, Communications and Signal Processing

作者： Xuan Luo Yaohui Jin Qingji Zeng Weiqiang Sun Wei Guo Weisheng Hu State Key Laboratory on Advanced Optical Communication System and Network Shanghai Jiao Tong University Shanghai China

The impact of IP over optical two-layer multicasting on the performance of channel zapping is discussed through two simple experiments and evaluated by an large scale concurrent video delivery testing in the 3TNet tes... 详细信息

ISBN: (纸本)9781424409822;1424409829

关键词： Large-scale systems IPTV TV Quality of service Optical receivers Optical fiber networks Optical filters system testing Bandwidth IP networks

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Dichotomy Slot Allocation: A Low-Jitter Scheduling Scheme for Input-Queued Switches

Dichotomy Slot Allocation: A Low-Jitter Scheduling Scheme fo...

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IEEE Workshop on High Performance Switching and Routing

作者： Jingjing Zhang Yaohui Jin Nirwan Ansari Weisheng Hu Advanced Networking Laboratory New Jersey Institute of Technology Newark NJ USA State Key Laboratory of Advanced Optical Communication system and Network Shanghai Jiaotong University Shanghai China

Recently, jitter is becoming an important performance criterion in switch scheduling to accommodate many emerging real-time applications. Formerly proposed low-jitter scheduling algorithms decompose traffic demands into a weighted sum of permutation matrices and then schedule these decomposed permutation matrices. However, a port pair's appearance in these decomposed matrices may exceed their actual traffic demand. Such extra allocation may result in high jitter for a port pair. In order to smoothly schedule each port pair, we propose a novel scheduling algorithm termed as dichotomy slot allocation (DSA). To achieve low jitter and small cell loss, DSA allocates slots to port pairs based on a designed Dichotomy Order. Both analysis and simulation results demonstrate that DSA achieves relatively lower jitter as compared to the state of the art.

关键词： Jitter Matrix decomposition Traffic control Round robin Scheduling algorithm Fabrics Optical switches Communication switching Analytical models Impedance matching

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Group delay dispersion measurement of Yb:YAB crystal with white-light interferometry

Group delay dispersion measurement of Yb:YAB crystal with wh...

引用

2007 Pacific Rim Conference on Lasers and Electro-Optics (CLEO/PACIFIC RIM 2007), vol.3

作者： Weijian Yang Jing Li Fan Zhang Yuanyang Zhang Zhigang Zhang Institute of Quantum Electronics School of Electronics Engineering and Computer Science State Key Laboratory of Advanced Optical Communication System and Networks University of Beijing 5 Yiheyuan Rd Beijing 100871 P. R. China

We report the measured group delay dispersion of Yb:YAB and compared with that provided by the crystal supplier, over the wavelength from 1000nm to 1080nm. The data are useful for the optimization of the dispersion co... 详细信息

ISBN: (纸本)1424411742

关键词： Dispersion Phase shift Pulse generation Refractive index White light interferometry Ytterbium lasers

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Large scale video delivery using hybrid packet/circuit multicasting: Experiences from Chinese broadband network testbed (3TNet) 33

Large scale video delivery using hybrid packet/circuit multi...

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2007 33rd European Conference and Exhibition of Optical Communication, ECOC 2007

作者： Jin, Yaohui Hu, Weisheng Sun, Weiqiang Guo, Wei Wu, Jiangxing Li, Hongbing Wang, Jinlin Xu, Minwei Li, Yi Wei, Liang Zhang, Guoying Xu, Yunbin Zhao, Huandong An, Ran Yin, Fang Wang, Jun Wei, Xueqing State Key Laboratory on Advanced Optical Communication System and Network Shanghai JiaoTong University Shanghai200240 China Task Force of 3TNet 863 Program China Research Institute of Telecomm. Transmission Ministry of Information Industry China Shanghai Telecomm Technology Research Institute China Telecom China Shanghai Interactive Television Shanghai Media Group China Huawei Technologies China Fiberhome Telecomm Technologies China

To support large scale video delivery, we carried out a hybrid packet/circuit multicasting field trial with 26000 users. Each end user has 40 Mb/s guaranteed bandwidth. The results of 1040 concurrent users testing war... 详细信息

ISBN: (纸本)9783800730421

关键词： Multicasting

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Stochastic Sparse-grid Collocation Algorithm (SSCA) for Periodic Steady-state Analysis of Nonlinear system with Process Variations

Stochastic Sparse-grid Collocation Algorithm (SSCA) for Peri...

引用

Asia and South Pacific Design Automation Conference

作者： Jun Tao Xuan Zeng Wei Cai Yangfeng Su Dian Zhou Charles Chiang ASIC & System State Key Laboratory Microelectronics Department Fudan University Shanghai China Department of Mathematics University of North Carolina Charlotte Charlotte NC USA Mathematics Department Fudan University Shanghai China Electrical Engineering Dept University of Texas Dallas Richardson TX USA Advanced Technology Group Synopsys Inc. Mountain View CA USA

ISBN: (纸本)1424406293;9781424406296

In this paper, stochastic collocation algorithm combined with sparse grid technique (SSCA) is proposed to deal with the periodic steady-state analysis for nonlinear systems with process variations. Compared to the existing approaches, SSCA has several considerable merits. Firstly, compared with the moment-matching parameterized model order reduction (PMOR), which equally treats the circuit response on process variables and frequency parameter by Taylor approximation, SSCA employs homogeneous chaos to capture the impact of process variations with exponential convergence rate and adopts Fourier series or wavelet bases to model the steady-state behavior in time domain. Secondly, contrary to stochastic Galerkin algorithm (SGA), which is efficient for stochastic linear system analysis, the complexity of SSCA is much smaller than that of SGA for nonlinear case. Thirdly, different from efficient collocation method, the heuristic approach which may results in "rank deficient problem" and "Runge phenomenon", sparse grid technique is developed to select the collocation points in SSCA in order to reduce the complexity while guaranteing the approximation accuracy. Furthermore, though SSCA is proposed for the stochastic nonlinear steady-state analysis, it can be applied for any other kinds of nonlinear system simulation with process variations, such as transient analysis, etc.

关键词： Stochastic systems Steady-state Algorithm design and analysis Nonlinear systems Circuits Frequency Chaos Convergence Fourier series Wavelet domain

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Large Scale Video Delivery Using Hybrid Packet/Circuit Multicasting: Experiences from Chinese Broadband Network Testbed (3TNet)

Large Scale Video Delivery Using Hybrid Packet/Circuit Multi...

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33rd European Conference and Exhibition of Optical Communication

作者： Yaohui Jin Weisheng Hu Weiqiang Sun Wei Guo Jiangxing Wu Hongbing Li Jinlin Wang Minwei Xu Yi Li Liang Wei Guoying Zhang Yunbin Xu Huandong Zhao Ran An Fang Yin Jun Wang Xueqing Wei State Key Laboratory on Advanced Optical Communication System and Network Shanghai Jiao Tong University Shanghai 200240 China Task Force of 3TNet the 863 Program China Research Institute of Telecomm. Transmission Ministry of Information Industry China Shanghai Telecomm. Technology Research Institute China Telecom China Shanghai Interactive Television Shanghai Media Group China Huawei Technologies China Fiberhome Telecomm. Technologies China

关键词： Logic gates Europe Streaming media

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