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B-ISDN是现代电信网的发展方向,拥塞控制技术则是其中的一个重要问题。由于B-ISDN采用新的信息传递方式──ATM,使传统的拥塞控制方法不再适用。本文依据ITU-T有关建议的最新内容对B-ISDN拥塞控制的基本思想、工作机制以及其中的主要功能作了较为详细的分析讨论,并提出了一些B-ISDN拥塞控制技术中尚需进一步研究的问题。 相似文献
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本文介绍了全球N-ISDN的商用情况和B-ISDN的发展趋势,展示出N-ISDN走了低谷、B-ISDN迈向市场的美好前景。 相似文献
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本文根据ITU-T最新的Q.2971协议,以及笔者所从事的实际课题,提出一整套B-ISDN第三层UNI信令的软件实现策略,其特点是能同时满足用户对点到点以及点到多点广播这两种通信方式的要求,而且可以动态配置。 相似文献
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Bharat Doshi 《International Journal of Communication Systems》1992,5(1):49-61
While static open loop rate controls may be adequate for handling continuous bit rate (CBR) traffic, relatively smooth data traffic, and relatively low speed bursty data traffic over broadband integrated networks, high speed bursty data sources need more dynamic controls. Burst level resource allocation is one such dynamic control. Potential benefits and other issues for burst level resource parameter negotiations for bursty data traffic over high speed wide area packet networks have been discussed earlier.1–6 A detailed analysis of an adaptive buffer/window negotiation scheme for long file transfers using these concepts is presented in Reference 1. In this paper we discuss two burst level buffer/window negotiation schemes for short intermittent file transfers, focusing on the specific needs of such traffic streams. We develop closed network of queues models to reflect the behaviour of the proposed schemes. These models, while being simple, capture essential details of the control schemes. Under fairly general assumptions, the resulting network of queues is of product form and can be analysed using the mean value analysis. We use such an analysis to compare the proposed schemes and to determine appropriate sizes of trunk buffers to achieve the desired balance between bandwidth utilization and file transfer delay. The effects of other parameters on the performance of these schemes as well as on the buffer sizing rules are also discussed. Burst level (in-call) parameter negotiation may be carried out by the end system with the network elements or by an interface system (access controller) with the broadband network elements. We discuss implications of this location as well as the needed protocol features. Finally, the service discrimination capabilities desired at the trunk controllers in switching nodes are briefly discussed. 相似文献
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ISDN的现状和发展 总被引:2,自引:0,他引:2
90年代将是ISDN和宽带ISDN迅速发展的年代,本文介绍了国外N-ISDN和B-ISDN的发展动向,并结合我国通信网的现状,对发展ISDN(B-ISDN)提出若干建议。 相似文献
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本文根据实地考察内容,结合宽带网络技术和业务重点及实施策略,全面介绍了日本关西宽带实验网发展背景,通信与广播电视综合应用实验和B-ISDN实用化实验的进展以及NTT所起作用。文章最后就关西宽带实验网的借鉴意义提出了几方面意见。 相似文献
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LAN/ATM互连及仿真B—ISDN业务的研究 总被引:1,自引:0,他引:1
通过对IEEE802.3LAN支持实时业务的探讨,提出了LAN透明传输B-ISDN业务的概念,对其路由选择,仿真B-ISDN业务等问题进行了研究,并给出了具体实现的途径。 相似文献