Proceedings of 7th International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV '97)最新文献_第2页

Randomized token buckets: reducing the buffers required in multiplexors 随机令牌桶:减少多路复用器所需的缓冲区

Proceedings of 7th International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV '97) Pub Date : 1997-05-19 DOI: 10.1109/NOSDAV.1997.629388

J. Fingerhut, G. Varghese

引用次数: 0

Resilient multicast support for continuous-media applications 连续媒体应用的弹性多播支持

Proceedings of 7th International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV '97) Pub Date : 1997-05-19 DOI: 10.1109/NOSDAV.1997.629385

X.R. Xu, A. Myers, Hui Zhang, R. Yavatkar

{"title":"Resilient multicast support for continuous-media applications","authors":"X.R. Xu, A. Myers, Hui Zhang, R. Yavatkar","doi":"10.1109/NOSDAV.1997.629385","DOIUrl":"https://doi.org/10.1109/NOSDAV.1997.629385","url":null,"abstract":"The IP multicast delivery mechanism provides a popular basis for delivery of continuous media to many participants in a conferencing application. However, the best-effort nature of multicast delivery results in poor playback quality in the presence of network congestion and packet loss. Contrary to widespread belief that the real-time nature of continuous media applications precludes the possibility of recovery of lost packets using retransmissions, we have found that these applications offer an interesting tradeoff between the desired playback quality and the desired degree of interactivity. In particular, we propose a new model of multicast delivery called resilient multicast in which each receiver in a multicast group can decide its own tradeoff between reliability and real-time requirements. To be effective, error recovery mechanisms in such a model need to be both fast (due to the real-time constraint) and have a low overhead (due to high volume of continuous media data). We have designed a resilient multicast protocol called STORM (STructure-Oriented Resilient Multicast) in which senders and receivers collaborate to recover from lost packets using two key ideas. First, group participants self-organize themselves into a distribution structure and use the structure to recover lost packets from adjacent nodes. Second, the distribution structure is dynamic and a lightweight algorithm is used to adapt the structure to changing network traffic conditions and group membership. We have implemented STORM in both VAT and a packet level simulator. Experimental results using both the MBONE and a simulation model demonstrate the effectiveness of our approach.","PeriodicalId":401407,"journal":{"name":"Proceedings of 7th International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV '97)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122726404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 133

A fresh approach to file system quality of service 文件系统服务质量的新方法

Proceedings of 7th International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV '97) Pub Date : 1997-05-19 DOI: 10.1109/NOSDAV.1997.629372

Paul Barham

引用次数: 44

Service aggregation through rate adaptation using a single storage format 使用单一存储格式通过速率适应进行服务聚合

Proceedings of 7th International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV '97) Pub Date : 1997-05-19 DOI: 10.1109/NOSDAV.1997.629386

Rajesh Krishnan, Thomas D. C. Little

引用次数: 6

Practical experience with a smoothing algorithm for video streaming 视频流平滑算法的实践经验

Proceedings of 7th International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV '97) Pub Date : 1997-05-19 DOI: 10.1109/NOSDAV.1997.629387

F. Miller, Heung-Man Lam, XiaoChun Mei, K. Zhang, S. Tripathi

引用次数: 0

Toward a common infrastructure for multimedia-networking middleware 面向多媒体网络中间件的通用基础设施

Proceedings of 7th International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV '97) Pub Date : 1997-05-19 DOI: 10.1109/NOSDAV.1997.629353

S. McCanne, Eric A. Brewer, R. Katz, L. Rowe, E. Amir, Y. Chawathe, A. Coopersmith, Ketan Mayer-Patel, Suchitra Raman, Angela Schuett, David Simpson, Andrew Swan, T. Tung, David Wu, Brian Smith

{"title":"Toward a common infrastructure for multimedia-networking middleware","authors":"S. McCanne, Eric A. Brewer, R. Katz, L. Rowe, E. Amir, Y. Chawathe, A. Coopersmith, Ketan Mayer-Patel, Suchitra Raman, Angela Schuett, David Simpson, Andrew Swan, T. Tung, David Wu, Brian Smith","doi":"10.1109/NOSDAV.1997.629353","DOIUrl":"https://doi.org/10.1109/NOSDAV.1997.629353","url":null,"abstract":"Real-time multimedia streams like audio and video are now integral data types in modern programming environments. Although a great deal of research has investigated effective and efficient programming support for manipulating such streams and although the design of digital media \"middleware\" is fairly well understood, no widely available or commonly accepted programming model exists within the research community. The authors believe this lack of common practice impedes our collective progress because it prevents disparate research groups from easily leveraging each other's work. They propose a solution to this problem that combines the best features of a number of existing multimedia toolkits-Berkeley's Continuous Media Toolkit, MIT's VuSystem, and the LBL/UCB MBone tools-into a fine-grained, extensible, and high performance toolkit. They describe the convergence of these three toolkits into a common programming infrastructure and argue that the availability and acceptance of the middleware could potentially facilitate and accelerate breakthroughs in multimedia networking.","PeriodicalId":401407,"journal":{"name":"Proceedings of 7th International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV '97)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130488714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 133

Fair airport scheduling algorithms 公平的机场调度算法

Proceedings of 7th International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV '97) Pub Date : 1997-05-19 DOI: 10.1109/NOSDAV.1997.629392

P. Goyal, H. Vin

引用次数: 27

Efficient striping techniques for multimedia file servers 多媒体文件服务器的高效条带化技术

Proceedings of 7th International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV '97) Pub Date : 1997-05-19 DOI: 10.1109/NOSDAV.1997.629332

Prashant Shenoy, H. Vin

{"title":"Efficient striping techniques for multimedia file servers","authors":"Prashant Shenoy, H. Vin","doi":"10.1109/NOSDAV.1997.629332","DOIUrl":"https://doi.org/10.1109/NOSDAV.1997.629332","url":null,"abstract":"The performance of striped disk arrays is governed by two parameters: the stripe unit size and the degree of striping. The authors describe techniques for determining the stripe unit size and degree of striping for disk arrays storing variable bit rate continuous media data. They present an analytical model that uses the server configuration and the workload characteristics to predict the load on the most heavily loaded disk in redundant and non-redundant arrays. They then use the model to determine the optimal stripe unit size for different workloads. They also use the model to study the effect of various system parameters on the optimal stripe unit size. To determine the degree of striping, they first demonstrate that striping a continuous media stream across all disks in the array causes the number of clients supported to increase sub-linearly with increase in the number of disks. To maximize the number of clients supported in large arrays, they propose a technique that partitions a disk array and stripes each media stream across a single partition. Since load imbalance can occur in such partitioned arrays, they present an analytical model to compute the imbalance across partitions in the array. They then use the model to determine a partition size that minimizes the load imbalance, and hence, maximizes the number of clients supported by the array.","PeriodicalId":401407,"journal":{"name":"Proceedings of 7th International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV '97)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115333112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 64

Understanding TCP dynamics in an integrated services Internet 了解集成服务Internet中的TCP动态

Proceedings of 7th International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV '97) Pub Date : 1997-05-19 DOI: 10.1109/NOSDAV.1997.629395

W. Feng, D. Kandlur, Diptikalyan Saha, Kang G. Shin

{"title":"Understanding TCP dynamics in an integrated services Internet","authors":"W. Feng, D. Kandlur, Diptikalyan Saha, Kang G. Shin","doi":"10.1109/NOSDAV.1997.629395","DOIUrl":"https://doi.org/10.1109/NOSDAV.1997.629395","url":null,"abstract":"A large number of Internet applications are sensitive to overload conditions in the network. While these applications have been designed to adapt somewhat to the varying conditions in the Internet, they can benefit greatly from an increased level of predictability in network services. We propose minor extensions to the packet queueing and discard mechanisms used in routers, coupled with simple control mechanisms at the source that enable the network to guarantee minimal levels of throughput to different network sessions while sharing the residual network capacity in a cooperative manner. The service realized by the proposed mechanisms is an interpretation of the controlled-load service being standardized by the IETF. Although controlled-load service can be used in conjunction with any transport protocol, our focus in this paper is on understanding its interaction with TCP. Specifically, we study the dynamics of TCP traffic in an integrated services network that simultaneously supports both best-effort and controlled-load sessions. In light of this study, we propose and experiment with several variations to TCP's control mechanisms with the objective of fine-tuning them for an integrated services environment. We then investigate the overheads associated with these enhancements and the benefits they provide. Finally, we show how the service mechanisms proposed here can be embedded within more elaborate packet and link scheduling frameworks in a fully-evolved integrated services Internet.","PeriodicalId":401407,"journal":{"name":"Proceedings of 7th International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV '97)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131691081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 54

ThinStreams: an architecture for multicasting layered video thstreams:用于多播分层视频的架构

Proceedings of 7th International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV '97) Pub Date : 1997-05-19 DOI: 10.1109/NOSDAV.1997.629384

L. Wu, R. Sharma, B. Smith

{"title":"ThinStreams: an architecture for multicasting layered video","authors":"L. Wu, R. Sharma, B. Smith","doi":"10.1109/NOSDAV.1997.629384","DOIUrl":"https://doi.org/10.1109/NOSDAV.1997.629384","url":null,"abstract":"Multicast is a common method for distributing audio and video over the Internet. Since receivers are heterogeneous in processing capability, network bandwidth, and requirements for video quality, a single multicast stream is usually insufficient. A common strategy is to use layered video coding with multiple multicast groups. In this scheme, a receiver adjusts its video quality by selecting the number of multicast groups, and thereby video layers, it receives. Implementing this scheme requires the receivers to decide when to join a new group or leave a subscribed group. This paper presents a new solution to the join/leave problem using ThinStreams. In ThinStreams, a single video layer is multicast over several multicast groups, each with identical bandwidth. ThinStreams separates the coding scheme (i.e., the video layers) from control (i.e., the multicast groups), helping to bound network oscillations caused by receivers joining and leaving high bandwidth multicast groups. This work evaluates the join/leave algorithms used in ThinStreams using simulations and preliminary experiments on the MBONE. It also addresses fairness among independent video broadcasts and shows how to prevent interference between them.","PeriodicalId":401407,"journal":{"name":"Proceedings of 7th International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV '97)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130277011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 99