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Proceedings of ICCS '94最新文献

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Performance analysis and parameter region for real time environment in IEEE 802.4 token bus network IEEE 802.4令牌总线网络实时环境下的性能分析及参数区域
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474205
J. Kim, S. Rhee
{"title":"Performance analysis and parameter region for real time environment in IEEE 802.4 token bus network","authors":"J. Kim, S. Rhee","doi":"10.1109/ICCS.1994.474205","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474205","url":null,"abstract":"The priority option of the 802.4 standard supports multiple classes of traffic by using a set of timers to control information exchange. This paper derives upper and lower bounds of the mean cycle time and the mean service time of the class 6 and 4, within which the minimum utilization constraint of the class 4 is guaranteed. Also, derived are conditions under which the token bus network is stable or unstable. This paper suggests a parameter tuning algorithm in a partially symmetric token bus network with two classes, which maximizes the token rotation time for a suitable high priority token hold time and still meets the stability condition of the network, the real time constraint and the minimum utilization constraint of the class 4.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123716604","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
Personal wireless communications: a challenge in radiowave propagation modelling 个人无线通信:无线电波传播建模的挑战
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474117
M. Neve, G. Rowe
{"title":"Personal wireless communications: a challenge in radiowave propagation modelling","authors":"M. Neve, G. Rowe","doi":"10.1109/ICCS.1994.474117","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474117","url":null,"abstract":"A deterministic technique for radiowave propagation modelling applicable to future personal wireless communication systems is proposed. Results from a research programme formulated to assess the feasibility of using ray-methods in this role are presented. These results clearly illustrate the considerable potential that the technique may offer system planners.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114963028","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
The design of a communication processing service subsystem for information retrieval/delivery services 信息检索/传递服务的通信处理服务子系统的设计
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474286
C. Park, K. Nam, S. Kim, B. Yoon
{"title":"The design of a communication processing service subsystem for information retrieval/delivery services","authors":"C. Park, K. Nam, S. Kim, B. Yoon","doi":"10.1109/ICCS.1994.474286","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474286","url":null,"abstract":"The paper presents the specifications of a communication processing service subsystem (CPSS) that provides information retrieval and delivery services. The system structure of this CPSS is presented and its main functional blocks are described. The network interfaces of the CPSS are also specified, namely the PSTN interface for users and the packet switched data network (PSDN) interface for information providers (IP). These network interfaces are designed to have a modular structure that can be upgraded easily for users at integrated services digital network (ISDN) and IPs, in frame relay. The services that can be provided by this system are discussed, namely information retrieval services, multicasting services, clipping services, media conversion services, and interactive data communication services. In the paper, the configuration and operation of software for these services are described. The advantages and effects that can be acquired from this system are also presented.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123841163","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
Long-range dependence in Ethernet traffic offered to interconnected DQDB MANs 提供给互连DQDB城域网的以太网流量的远程依赖性
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474206
M. Cinotti, E. Mese, S. Giordano, F. Russo
{"title":"Long-range dependence in Ethernet traffic offered to interconnected DQDB MANs","authors":"M. Cinotti, E. Mese, S. Giordano, F. Russo","doi":"10.1109/ICCS.1994.474206","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474206","url":null,"abstract":"Accurate mathematical modeling of etherogeneous sources corresponding to future integrated services will strongly affect efficient design of telecommunication networks. Teletraffic theory, originally developed for circuit switched voice networks, have to be extended by the construction of new models which are capable of describing the detailed nature of broadband traffic. Recent studies show that a correct approach to the problem of traffic modeling have to be carried out on the basis of measurements collected in real circumstances and not just by considering pseudo-ideal isolated traffic sources which could underestimate the interesting queuing statistics of the network. The paper addresses the need for a wider set of mathematical tools capable to build up a basic set of models extracted from real measurements. Following recent measurement studies we point out that the integration of different methodology is of extreme interest in discovering the statistical characteristics of broadband traffic. We deal with models of the traffic offered by LAN to a MAN corresponding to a connectionless LAN to LAN interconnection service provided by a DQDB MAN. The aim is the post processing of data traffic for the construction of the building blocks to be used in hierarchical block oriented simulation models of broadband networks. We show that also collecting traffic patterns with medium/low time resolution it is possible to confirm the results obtained with high quality tools and longer measurements. The main target of this study is to obtain an easy way to estimate the relevant parameters of a packet arrival process.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125284200","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: 15
Performance comparison of peak bit rate and bursty traffic specification and allocation policer functions 峰值比特率和突发流量规范和分配策略函数的性能比较
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474197
Tariq M. Jadoon, D. Harle
{"title":"Performance comparison of peak bit rate and bursty traffic specification and allocation policer functions","authors":"Tariq M. Jadoon, D. Harle","doi":"10.1109/ICCS.1994.474197","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474197","url":null,"abstract":"This paper compares the performance characteristics of a leaky bucket with a bursty traffic allocation and specification approach for a number of different scenarios in packet voice and video services. The scenarios include varying the peak bit rate, mean burst duration, mean silence period, burstiness, etc. over nominal values based on a Markov modulated deterministic process (MMDP) model of packet voice and video services. The study investigates the effectiveness of the bursty traffic allocation and specification method on mean and burst policing in comparison with the leaky bucket. The work compares and contrasts the results produced in previous studies using analytical and simulation techniques.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125930270","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
Buffer statistical multiplexing for bursty data calls in ATM network ATM网络中突发数据呼叫的缓冲统计复用
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474161
R. Beraldi, A. Iera, V. Ruggi, S. Marano
{"title":"Buffer statistical multiplexing for bursty data calls in ATM network","authors":"R. Beraldi, A. Iera, V. Ruggi, S. Marano","doi":"10.1109/ICCS.1994.474161","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474161","url":null,"abstract":"In this paper a study on a link buffer multiplexing scheme, fast buffer reservation (FBR), has been developed. A method for statistically reserving link buffers space to virtual circuits sharing a transmission resource in ATM networks is proposed. It takes advantages from the bursty nature of traffic while preserving user burst integrity. Effective network performance improvements has been observed by simulating real system behaviour in presence of homogeneous sources traffic for different burstiness values. An upper bound on burst loss probability, which can be used at the call set up phase, has been computed. It is useful for assuring a given network quality of service to each accepted virtual circuit, when the new method is adopted.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130166222","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
A TCP/IP-X.25 gateway to Teleview TCP / IP-X。25号网关到Teleview
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474294
H. Pung, Kfw Wong, S. Yap, Alfred Yau, T.L. Wong, Y.C. Lee
{"title":"A TCP/IP-X.25 gateway to Teleview","authors":"H. Pung, Kfw Wong, S. Yap, Alfred Yau, T.L. Wong, Y.C. Lee","doi":"10.1109/ICCS.1994.474294","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474294","url":null,"abstract":"We present the design and implementation of a prototype gateway system that bridges the users of computer networks supporting the TCP/IP protocol to Teleview via the X.25 public data networks. The performance of the prototype was measured in terms of end-to-end response times. The results of our experiments are presented and discussed.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128856639","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
Investigations into a circular patch antenna in a cylindrical cavity enclosure 圆柱形腔体外壳中圆形贴片天线的研究
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474213
N. Karmakar, M. Singh
{"title":"Investigations into a circular patch antenna in a cylindrical cavity enclosure","authors":"N. Karmakar, M. Singh","doi":"10.1109/ICCS.1994.474213","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474213","url":null,"abstract":"An empirical formula for resonant frequency and simplified equivalent circuit model of a microstrip patch antenna in a circular cavity is presented. EEsof Touchstone simulations are used to validate the model. Based on the analysis and measured results different design curves are derived.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122592623","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
Performance experiments with inhouse ATM technology 使用内部ATM技术进行性能实验
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474062
T. Luckenbach, F. Schulz, M. Burak
{"title":"Performance experiments with inhouse ATM technology","authors":"T. Luckenbach, F. Schulz, M. Burak","doi":"10.1109/ICCS.1994.474062","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474062","url":null,"abstract":"Based on the results of the BERKOM Broadband-ISDN pilot project the Research Institute for Open Communication Systems (FOKUS) has started in the beginning of 1993 with the procurement and installation of inhouse ATM equipment. Since then the ATM-Lab has been continously growing and presently comprises ATM switches of four different vendors (Fore Systems, Synoptics, Siemens, Cisco). In addition the number of ATM endsystems has grown to about 20 Sun workstations and a number of interworking units between Ethernet, FDDI and ATM have been installed and successfully tested. The paper concentrates on performance issues like cell delay and cell delay variation as well as with performance of AAL5 and TCP/IP via inhouse ATM networks.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121100713","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: 1
Fuzzy effect based dynamic channel assignment 基于模糊效应的动态信道分配
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474159
M. Abdul-Haleem, K. Cheung, J. Chuang
{"title":"Fuzzy effect based dynamic channel assignment","authors":"M. Abdul-Haleem, K. Cheung, J. Chuang","doi":"10.1109/ICCS.1994.474159","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474159","url":null,"abstract":"A class of dynamic channel assignment (DCA) algorithms referred to as the fuzzy distributed DCA (FDDCA) is presented. From decision point of view, conventional DCA algorithms are global and crisp decision makers. The decision of to or not to assign a channel for an incoming call is a crisp logic evaluation over a set of crisp system constraints. Complex logic operations are normally required to achieve the performance bound, resulting in increased cost and delay. In contrast, FDDCA algorithms are soft decision makers and the decision making is distributed. Every base station is responsible for making decisions of assigning channels for incoming calls. Fuzzy logic is employed as the decision making logic. Interference constraints are softened and treated as fuzzy sets characterized by membership functions. The algorithm was tested on the example by Sivarajan et. al. (see Proc 40th IEEE Vehicular Tech Conf., p. 631-637, May 1990), and is shown to outperform crisp DCA algorithms in throughput capacities, especially within the practical range of 1-5% blocking.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121105933","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: 7
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