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Comparison of congestion control schemes for ABR service in ATM local area networks ATM局域网中ABR业务拥塞控制方案的比较
1994 IEEE GLOBECOM. Communications: The Global Bridge Pub Date : 1994-11-28 DOI: 10.1109/GLOCOM.1994.512792
A. Kolarov, G. Ramamurthy
{"title":"Comparison of congestion control schemes for ABR service in ATM local area networks","authors":"A. Kolarov, G. Ramamurthy","doi":"10.1109/GLOCOM.1994.512792","DOIUrl":"https://doi.org/10.1109/GLOCOM.1994.512792","url":null,"abstract":"High speed LAN architecture has begun to migrate from shared media technologies to switch based solutions, and ATM based switch architectures are at the forefront of this development. With this radical change in mind, the ATM Forum has defined a new service class for data applications known as the available bit rate service (ABR). If ABR service has to achieve the same level of performance as the best effort service offered by current LAN technologies, then appropriate traffic control mechanisms are necessary. The ATM Forum is currently in the process of evaluating several competing traffic control schemes. In this contribution we propose a reference network model and a reference traffic model for evaluation of competing traffic control schemes. We also present detailed simulation results on the effectiveness of the back pressure (BP), backward explicit congestion notification (BECN), forward explicit congestion notification (FECN), and combination of BECN and BP, and FECN and BP controls. These results indicate that with pure BP, BECN or FECN, severe network performance degradation can occur under overload. A combination of BECN and BP or FECN and BP averts such degradation in LANs. On the other hand, BP alone or in combination leads to significant performance degradation in WANs. The performance in WANs however can be substantially improved by giving priority to network transit traffic over traffic entering the network.","PeriodicalId":323626,"journal":{"name":"1994 IEEE GLOBECOM. Communications: The Global Bridge","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114320744","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
Multi-rate services: challenges in network design 多速率业务:网络设计的挑战
1994 IEEE GLOBECOM. Communications: The Global Bridge Pub Date : 1994-11-28 DOI: 10.1109/GLOCOM.1994.513597
K. Basu, P. Maveddat, Jin Chen
{"title":"Multi-rate services: challenges in network design","authors":"K. Basu, P. Maveddat, Jin Chen","doi":"10.1109/GLOCOM.1994.513597","DOIUrl":"https://doi.org/10.1109/GLOCOM.1994.513597","url":null,"abstract":"The current public switched telephone networks (PSTN) are engineered for services based on a single 64 kilobits per second (kbits/s) channel or DS-0. Demand for more bandwidth has created a need for new advanced services based on multiple DS-0s for a single call. This service will have significantly different traffic characteristics than traditional narrowband (NB) calls. To accommodate this multi-rate (also known as wideband) functionality on current networks, some of the existing network engineering rules (real-time capacity, customer access trunk engineering, inter-office trunk engineering) will require changes.","PeriodicalId":323626,"journal":{"name":"1994 IEEE GLOBECOM. Communications: The Global Bridge","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114800372","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 linear predictive estimation in the RAKE for multipath-fading channel with white noise of general distributions 一般分布的白噪声多径衰落信道的线性预测估计
1994 IEEE GLOBECOM. Communications: The Global Bridge Pub Date : 1994-11-28 DOI: 10.1109/GLOCOM.1994.513148
Qiang Shen, Bo-Xiu Wu, A. Elhakeem, Ke-Qiang Liao
{"title":"The linear predictive estimation in the RAKE for multipath-fading channel with white noise of general distributions","authors":"Qiang Shen, Bo-Xiu Wu, A. Elhakeem, Ke-Qiang Liao","doi":"10.1109/GLOCOM.1994.513148","DOIUrl":"https://doi.org/10.1109/GLOCOM.1994.513148","url":null,"abstract":"The parameter estimation of the multipath and fading channel for a RAKE correlator is investigated. A linear predictor is proposed to get better estimation. Since the industrial interference is generally impulsive, the investigation is under a general distribution assumption for white noise. A parallel LMS adaptive algorithm is proposed to reduce the impairment of impulsive noise and decision feedback error on predictor weights adjustment. Performance analysis and computer simulations are presented.","PeriodicalId":323626,"journal":{"name":"1994 IEEE GLOBECOM. Communications: The Global Bridge","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116285059","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
Object-oriented technology in a broadband network software architecture 面向对象技术在宽带网络软件架构中的应用
1994 IEEE GLOBECOM. Communications: The Global Bridge Pub Date : 1994-11-28 DOI: 10.1109/GLOCOM.1994.513567
S. Moyer, T. Soon
{"title":"Object-oriented technology in a broadband network software architecture","authors":"S. Moyer, T. Soon","doi":"10.1109/GLOCOM.1994.513567","DOIUrl":"https://doi.org/10.1109/GLOCOM.1994.513567","url":null,"abstract":"This paper describes the technical elements of the successful use of object-oriented technology in the Experimental ATM (Asynchronous Transfer Mode) Network Services Environment (EXPANSE) project at Bellcore and the Broadband Experimental Systems Testbed (BEST) at Pacific Bell. The EXPANSE project adopted an object-oriented software architecture for a connection manager that provides services for multimedia multiparty connections over a broadband network. The BEST project offers an object-oriented applications environment that provides multimedia multiparty end-user services such as video telephony, video conferencing, video mail, video-on-demand and video broadcasting. These end-user services request connection management services from the TRM via an application interface module that performs call/session control. The application interface and many applications are implemented in Smalltalk. This paper discusses the technical efforts that integrated these two different object-oriented systems and provides an assessment of why the object-oriented technology helped make the transfer successful.","PeriodicalId":323626,"journal":{"name":"1994 IEEE GLOBECOM. Communications: The Global Bridge","volume":"248 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123671996","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
Individual versus end-to-end gain equalization in erbium-doped fiber amplifier chains: a comparison 掺铒光纤放大器链中的个体增益均衡与端到端增益均衡:比较
1994 IEEE GLOBECOM. Communications: The Global Bridge Pub Date : 1994-11-28 DOI: 10.1109/GLOCOM.1994.512846
F. A. Flood, O. Tonguz
{"title":"Individual versus end-to-end gain equalization in erbium-doped fiber amplifier chains: a comparison","authors":"F. A. Flood, O. Tonguz","doi":"10.1109/GLOCOM.1994.512846","DOIUrl":"https://doi.org/10.1109/GLOCOM.1994.512846","url":null,"abstract":"Gain equalization of erbium-doped fiber amplifier (EDFAs) is an important problem in lightwave communication systems. We compare two approaches for gain equalization. The two strategies are compared quantitatively by considering power budget, received signal power and signal-to-noise ratio (SNR), and transmission distance. Relative performance is shown as a function of the number of amplifiers and the number of channels, we also consider relative technical advantages of implementing the two equalization schemes. It is shown that as number of channels increase, depending on the number of channels transmitted, the individual equalization scheme results in a 500 km-1000 km increase in transmission distance relative to the end/end equalization scheme at the expense of a more complex and expensive implementation. The results provide an insight into the relative merits of end/end versus individual electronic equalization strategies.","PeriodicalId":323626,"journal":{"name":"1994 IEEE GLOBECOM. Communications: The Global Bridge","volume":"184 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124663223","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 reservation and collision-free media access protocol for optical star local area networks 一种用于光学星型局域网的保留和无冲突媒体访问协议
1994 IEEE GLOBECOM. Communications: The Global Bridge Pub Date : 1994-11-28 DOI: 10.1109/GLOCOM.1994.513583
D. A. Levine, I. Akyildiz
{"title":"A reservation and collision-free media access protocol for optical star local area networks","authors":"D. A. Levine, I. Akyildiz","doi":"10.1109/GLOCOM.1994.513583","DOIUrl":"https://doi.org/10.1109/GLOCOM.1994.513583","url":null,"abstract":"A new multiple access protocol is developed for optical local area networks based on a passive star topology. The protocol uses wavelength division multiplexing (WDM), and is highly bandwidth-efficient. Each station in the network is guaranteed a minimum bandwidth and a maximum access delay to the network, allowing the protocol to be used for both datagram and connection-oriented traffic. No central control is required, and the amount of processing required by each station is small. Time is divided in fixed-sized slots. Before transmitting its data, a station must compete with others for the right to use a slot in a preassigned wavelength, using a collision-free procedure. The protocol is suitable for networks where the number of users is larger than the number of available channels. The scheme can operate with at least a single tunable transmitter/receiver pair in each station. The paper includes plots where results obtained from simulations and from the application of models are compared.","PeriodicalId":323626,"journal":{"name":"1994 IEEE GLOBECOM. Communications: The Global Bridge","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128697193","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: 13
Adaptive modulation/TDMA scheme for personal multimedia communication systems 个人多媒体通信系统的自适应调制/TDMA方案
1994 IEEE GLOBECOM. Communications: The Global Bridge Pub Date : 1994-11-28 DOI: 10.1109/GLOCOM.1994.512806
S. Sampei, S. Komaki, N. Morinaga
{"title":"Adaptive modulation/TDMA scheme for personal multimedia communication systems","authors":"S. Sampei, S. Komaki, N. Morinaga","doi":"10.1109/GLOCOM.1994.512806","DOIUrl":"https://doi.org/10.1109/GLOCOM.1994.512806","url":null,"abstract":"The development of digital land mobile communication techniques makes it possible to use most of the modulation techniques. This paper proposes an adaptive modulation/TDMA scheme to achieve high capacity personal multimedia communication systems. TDMA is used to cope with various bit rate for multimedia services, and the modulation scheme is selected from 1/4-rate QPSK, 1/2-rate QPSK, QPSK, 16QAM and 64QAM according to the received C/I/sub c/ (power ratio of the desired signal to the co-channel interference) and the delay spread. Computer simulation confirms that the proposed system can achieve 3.5 times higher spectral efficiency than that of the conventional QPSK systems at the outage probability of 10%, and the proposed system is also effective to improve the delay spread immunity.","PeriodicalId":323626,"journal":{"name":"1994 IEEE GLOBECOM. Communications: The Global Bridge","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129573334","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: 34
Multitrack RLL codes for the storage channel with immunity to intertrack interference 多道RLL码，用于不受道间干扰的存储信道
1994 IEEE GLOBECOM. Communications: The Global Bridge Pub Date : 1994-11-28 DOI: 10.1109/GLOCOM.1994.513022
J. Lee, V.K. Madisetti
{"title":"Multitrack RLL codes for the storage channel with immunity to intertrack interference","authors":"J. Lee, V.K. Madisetti","doi":"10.1109/GLOCOM.1994.513022","DOIUrl":"https://doi.org/10.1109/GLOCOM.1994.513022","url":null,"abstract":"Multitrack codes that have been proposed for the magnetic storage channel promise larger capacities than conventional run-length limited (RLL) single-track codes. While recent research has approached the intertrack interference (ITI) problem as one or signal detection, we address this issue and mitigate its effect by proper code design. We propose new multitrack RLL codes with immunity to ITI in high density magnetic storage channels. We also enumerate the total number of unique sequences satisfying the minimum run-length constraint for each track in conjunction with the minimum run-length constraint between tracks, and the maximum run-length constraint satisfied by at least one track.","PeriodicalId":323626,"journal":{"name":"1994 IEEE GLOBECOM. Communications: The Global Bridge","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127035685","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: 8
SDH network equipment architecture controlled by multi operation systems 多操作系统控制的SDH网络设备体系结构
1994 IEEE GLOBECOM. Communications: The Global Bridge Pub Date : 1994-11-28 DOI: 10.1109/GLOCOM.1994.512840
K. Harada, N. Tamaki, S. Matsuoka
{"title":"SDH network equipment architecture controlled by multi operation systems","authors":"K. Harada, N. Tamaki, S. Matsuoka","doi":"10.1109/GLOCOM.1994.512840","DOIUrl":"https://doi.org/10.1109/GLOCOM.1994.512840","url":null,"abstract":"With the progress of network management technology and the necessity of the multivendor environment, it is proposed to introduce TMN (telecommunications management network) architecture and OpS (operation systems) based on the TMN model. It is important that the NE (network element) which works under the current OpS is transferred to the new OpS based on the TMN. We describe the NE architecture which is controlled both under the current OpS and the new OpS based on the TMN architecture and show the SDH equipment-1.5 Mbit/s cross-connect- adopting this structure.","PeriodicalId":323626,"journal":{"name":"1994 IEEE GLOBECOM. Communications: The Global Bridge","volume":"2007 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127307551","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
Effects of multipath and base-station antenna arrays on uplink capacity of cellular CDMA 多径和基站天线阵列对蜂窝CDMA上行容量的影响
1994 IEEE GLOBECOM. Communications: The Global Bridge Pub Date : 1994-11-28 DOI: 10.1109/GLOCOM.1994.513551
A. Naguib, A. Paulraj
{"title":"Effects of multipath and base-station antenna arrays on uplink capacity of cellular CDMA","authors":"A. Naguib, A. Paulraj","doi":"10.1109/GLOCOM.1994.513551","DOIUrl":"https://doi.org/10.1109/GLOCOM.1994.513551","url":null,"abstract":"We evaluate the uplink capacity of a DS-CDMA cellular system using DPSK modulation with antenna array at base-station. A 2D-RAKE receiver structure with predetection equal gain combining is used for demodulation. We study both the outage and blocking probabilities of the system as a function of the cell loading and the number of array elements. Assuming perfect instantaneous power control and considering the effects of shadowing, multipath fading, path loss, and voice activity, we evaluate the system capacity in terms of the number of users per cell. Simulation results are also presented.","PeriodicalId":323626,"journal":{"name":"1994 IEEE GLOBECOM. Communications: The Global Bridge","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127049741","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: 31
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