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Proceedings of Sixth International Conference on Computer Communications and Networks最新文献

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QoS routing algorithms for pre-computed paths 预先计算路径的QoS路由算法
Proceedings of Sixth International Conference on Computer Communications and Networks Pub Date : 1997-09-22 DOI: 10.1109/ICCCN.1997.623320
C. Pornavalai, G. Chakraborty, N. Shiratori
{"title":"QoS routing algorithms for pre-computed paths","authors":"C. Pornavalai, G. Chakraborty, N. Shiratori","doi":"10.1109/ICCCN.1997.623320","DOIUrl":"https://doi.org/10.1109/ICCCN.1997.623320","url":null,"abstract":"Routing with multiple QoS constraints is known to be a NP-complete problem. In our previous work (QoSR/sub BF/ algorithm), we have shown that, for a number of specific QoS constraints, this problem can be solved in polynomial time, when a weighted fair queueing (WFQ) service discipline is employed. QoSR/sub BF/ is an on-demand algorithm. We propose a number of QoS routing algorithms for pre-computed paths, when all or some of the flow specification parameters and the amount of bandwidth that has to be reserved are not known a priori. We also show that the size of the routing table could be reduced, as paths satisfying some conditions could be neglected.","PeriodicalId":305733,"journal":{"name":"Proceedings of Sixth International Conference on Computer Communications and Networks","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131032724","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: 6
STEPS: a software tool-set for automated protocol synthesis 步骤:用于自动协议合成的软件工具集
Proceedings of Sixth International Conference on Computer Communications and Networks Pub Date : 1997-09-22 DOI: 10.1109/ICCCN.1997.623307
Hakim Kahlouche
{"title":"STEPS: a software tool-set for automated protocol synthesis","authors":"Hakim Kahlouche","doi":"10.1109/ICCCN.1997.623307","DOIUrl":"https://doi.org/10.1109/ICCCN.1997.623307","url":null,"abstract":"Protocol synthesis represents an important alternative to the classical design process based on reachability analysis where the fundamental drawback is the exponential growth of reachable states. In order to demonstrate the usefulness and the feasibility of the protocol synthesis approach presented by Kahlouche and Girardot (see IEEE INFOCOM'1996, p.1165-73, 1996), we have developed a software tool-set for automated protocol synthesis called STEPS which supports our synthesis approach. The aim of this paper is to present the functionalities and an experimentation of STEPS. We also propose a new protocol development methodology based on our synthesis approach.","PeriodicalId":305733,"journal":{"name":"Proceedings of Sixth International Conference on Computer Communications and Networks","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131056434","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: 0
Dynamic scheduling of real-time messages over an optical network 光网络实时消息的动态调度
Proceedings of Sixth International Conference on Computer Communications and Networks Pub Date : 1997-09-22 DOI: 10.1109/ICCCN.1997.623333
Cheng-Chi Yu, S. Bhattacharya
{"title":"Dynamic scheduling of real-time messages over an optical network","authors":"Cheng-Chi Yu, S. Bhattacharya","doi":"10.1109/ICCCN.1997.623333","DOIUrl":"https://doi.org/10.1109/ICCCN.1997.623333","url":null,"abstract":"This paper proposes real-time traffic management algorithms over a multihop optical network. Our algorithms consider dynamic scheduling of (time, wavelength) slots in a multihop TWDM transmission schedule, so that a set of time-critical messages can meet their hard (and, soft) deadlines. Hard real-time messages are assigned to the highest priority level, while soft real-time messages are assigned to user-defined, progressively lower priority levels. The objective is to schedule these messages, all or as many as possible following the priority ordering. Previous research in this direction are either static scheduling policies (which cannot adapt to varying traffic conditions), or dynamic scheduling but for non-realtime traffic. Performance is measured in simulation. Where input factors include load, proximity of the deadline values, relative mix of hard and soft real-time messages, and priority levels of the messages.","PeriodicalId":305733,"journal":{"name":"Proceedings of Sixth International Conference on Computer Communications and Networks","volume":"170 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132963224","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: 14
New algorithms and techniques for well-synchronized audio and video streams communications 用于良好同步音频和视频流通信的新算法和技术
Proceedings of Sixth International Conference on Computer Communications and Networks Pub Date : 1997-09-22 DOI: 10.1109/ICCCN.1997.623315
H. Kitamura
{"title":"New algorithms and techniques for well-synchronized audio and video streams communications","authors":"H. Kitamura","doi":"10.1109/ICCCN.1997.623315","DOIUrl":"https://doi.org/10.1109/ICCCN.1997.623315","url":null,"abstract":"Due to the rapid progress of computer and network technologies, the environment for multimedia communications is being prepared day by day. This environment, however is not developed enough to realize well-synchronized high performance multimedia communications, because there are still problems that must be solved. To solve these problems, we propose new algorithms and techniques that have already been implemented and verified on a testbed system. We discuss the influence of human media perception and the control characteristics of audio and video devices on the synchronization mechanisms. We mainly discuss synchronization methods under resource critical situations. The methods are also extended to handle packet loss error recovery.","PeriodicalId":305733,"journal":{"name":"Proceedings of Sixth International Conference on Computer Communications and Networks","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129142486","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: 4
Distributed and persistent mobile agents for heterogeneous personal communications systems 异构个人通信系统的分布式持久移动代理
Proceedings of Sixth International Conference on Computer Communications and Networks Pub Date : 1997-09-22 DOI: 10.1109/ICCCN.1997.623321
P. Stañski, A. Zaslavsky
{"title":"Distributed and persistent mobile agents for heterogeneous personal communications systems","authors":"P. Stañski, A. Zaslavsky","doi":"10.1109/ICCCN.1997.623321","DOIUrl":"https://doi.org/10.1109/ICCCN.1997.623321","url":null,"abstract":"Problems of environment heterogeneity and interoperability between different mobile computing platforms are among the most urgent to address by the research community. This paper proposes an environment, which supports migration of mobile code developed using heterogeneous languages. Current developments in the area of mobile code and distributed mobile computing systems are discussed and placed within the context of the proposed system. The architecture behind the proposed portable environment small operating system (PESOS) provides an open platform for distributed persistent personal agents written using a variety of languages. Additionally PESOS introduces and discusses the concept of a uniform migration wrapper consisting of portable file systems (PFS) within which applications and data are embedded.","PeriodicalId":305733,"journal":{"name":"Proceedings of Sixth International Conference on Computer Communications and Networks","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117017883","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: 3
Performance analysis of parallel frame synchronization scheme in SDH systems SDH系统中并行帧同步方案的性能分析
Proceedings of Sixth International Conference on Computer Communications and Networks Pub Date : 1997-09-22 DOI: 10.1109/ICCCN.1997.623351
M. Obaidat, J. Teng
{"title":"Performance analysis of parallel frame synchronization scheme in SDH systems","authors":"M. Obaidat, J. Teng","doi":"10.1109/ICCCN.1997.623351","DOIUrl":"https://doi.org/10.1109/ICCCN.1997.623351","url":null,"abstract":"We analyze the performance of a new parallel frame synchronization system used for SDH networks. The performance is measured by using false synchronous probability P/sub FS/, the average synchronous incoming time T/sub ASI/, the average synchronous catching time T/sub ASC/, and the average synchronization holding time T/sub ASH/. Analysis indicates that the performance of our scheme is similar to that of the traditional approaches, or better under some condition. Furthermore, our scheme permits designers to use off-the-shelf integrated circuits to build SDH synchronization system.","PeriodicalId":305733,"journal":{"name":"Proceedings of Sixth International Conference on Computer Communications and Networks","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117112269","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: 0
Supporting distributed applications on advanced communication networks 支持先进通信网络上的分布式应用
Proceedings of Sixth International Conference on Computer Communications and Networks Pub Date : 1997-09-22 DOI: 10.1109/ICCCN.1997.623326
A. Schill, T. Hutschenreuther
{"title":"Supporting distributed applications on advanced communication networks","authors":"A. Schill, T. Hutschenreuther","doi":"10.1109/ICCCN.1997.623326","DOIUrl":"https://doi.org/10.1109/ICCCN.1997.623326","url":null,"abstract":"Distributed applications are of growing importance in many application fields such as office automation, manufacturing, telematics or information services. This paper outlines support facilities for such applications based on distributed platforms. It then discusses further requirements resulting from the use of advanced network technologies. Architectural support for such environments is presented and experiences with specific software support solutions are discussed. As an application example, workflow processing in distributed environments is used in order to illustrate the approaches. The paper concludes with an outlook to future work.","PeriodicalId":305733,"journal":{"name":"Proceedings of Sixth International Conference on Computer Communications and Networks","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117334206","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: 0
Design and implementation of a QoS capable switch-router 具有QoS功能的交换路由器的设计与实现
Proceedings of Sixth International Conference on Computer Communications and Networks Pub Date : 1997-09-22 DOI: 10.1109/ICCCN.1997.623324
E. Basturk, A. Birman, G. Delp, R. Guérin, R. Haas, S. Kamat, D. Kandlur, P. Pan, D. Pendarakis, V. Peris, Raju Rajan, D. Saha, Doug Williams
{"title":"Design and implementation of a QoS capable switch-router","authors":"E. Basturk, A. Birman, G. Delp, R. Guérin, R. Haas, S. Kamat, D. Kandlur, P. Pan, D. Pendarakis, V. Peris, Raju Rajan, D. Saha, Doug Williams","doi":"10.1109/ICCCN.1997.623324","DOIUrl":"https://doi.org/10.1109/ICCCN.1997.623324","url":null,"abstract":"An important challenge for the future growth of the Internet is to design routers that can forward the exponentially increasing volume of traffic, and at the same time provide the service differentiation needed by new applications. In this paper, we describe the architecture, implementation, and initial experiences with a system designed to meet this challenge. This system, which we call a QoS capable switch-router (QSR), combines the salient features of switching and routing technologies to provide high throughput and support the different classes of service being defined by the IETF. It consists of a core (ATM) switch fabric connecting intelligent adapters, each capable of both routing and switching pockets. A control engine is responsible for routing, RSVP signalling, and resource management. We have built a prototype network of 3 systems connected to several UNIX hosts, and have conducted preliminary performance measurements on this network.","PeriodicalId":305733,"journal":{"name":"Proceedings of Sixth International Conference on Computer Communications and Networks","volume":"121-124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114152626","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: 20
TCP selective acknowledgments and UBR drop policies to improve ATM-UBR performance over terrestrial and satellite networks TCP选择性确认和UBR丢弃策略，以提高地面和卫星网络上ATM-UBR的性能
Proceedings of Sixth International Conference on Computer Communications and Networks Pub Date : 1997-09-22 DOI: 10.1109/ICCCN.1997.623286
R. Goyal, R. Jain, S. Kalyanaraman, S. Fahmy, B. Vandalore, S. Kota
{"title":"TCP selective acknowledgments and UBR drop policies to improve ATM-UBR performance over terrestrial and satellite networks","authors":"R. Goyal, R. Jain, S. Kalyanaraman, S. Fahmy, B. Vandalore, S. Kota","doi":"10.1109/ICCCN.1997.623286","DOIUrl":"https://doi.org/10.1109/ICCCN.1997.623286","url":null,"abstract":"We study the performance of selective acknowledgements (SACK) with TCP over the ATM-UBR service category. We examine various unspecified bit rate (UBR) drop policies, TCP mechanisms and network configurations to recommend optimal parameters for TCP over UBR. We discuss various TCP congestion control mechanisms compare their performance for LANs and WANs. We describe the effect of satellite delays on TCP performance over UBR and present simulation results for LANs, WANs and satellite networks. SACK TCP improves the performance of TCP over UBR, especially for large delay networks. Intelligent drop policies at the switches are an important factor for good performance in local area networks.","PeriodicalId":305733,"journal":{"name":"Proceedings of Sixth International Conference on Computer Communications and Networks","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124421099","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: 28
A solution for the priority queue problem of deadline-ordered service disciplines 限期排序服务学科优先队列问题的解决方法
Proceedings of Sixth International Conference on Computer Communications and Networks Pub Date : 1997-09-22 DOI: 10.1109/ICCCN.1997.623330
N. Figueira
{"title":"A solution for the priority queue problem of deadline-ordered service disciplines","authors":"N. Figueira","doi":"10.1109/ICCCN.1997.623330","DOIUrl":"https://doi.org/10.1109/ICCCN.1997.623330","url":null,"abstract":"To provide service guarantees in packet-switching networks, several deadline-ordered service disciplines have been proposed, including delay-EDD (earliest due deadline), jitter-EDD, leave-in-time, RFS, and virtual-clock. In a deadline-ordered service discipline, packets are assigned transmission deadlines and are transmitted according to the deadline-ordered scheduling policy: transmit packets in increasing order of deadlines. Although these service disciplines provide desirable quality of service (QoS) guarantees, they have been regarded as infeasible for high-speed networks due to the high overhead imposed by the sorting of packets in the server queue. This paper shows that these service disciplines become efficient if they replace the deadline-ordered scheduling policy with a new scheduling policy that is defined. This new scheduling policy uses hardware support to achieve an O(1) time complexity. We prove that a server that employs this new scheduling policy provides a delay bound to real-time packets that is slightly larger than what the server can provide with deadline-ordered scheduling.","PeriodicalId":305733,"journal":{"name":"Proceedings of Sixth International Conference on Computer Communications and Networks","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121550886","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: 2
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