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Study on Very High - speed Multi - rane Network for B - ISDN

B-ISDN超高速多频网络研究

基本信息

批准号：
02452149
负责人：
YASUDA Yasuhiko
金额：
$ 3.39万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1990
资助国家：
日本
起止时间：
1990 至 1991
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-02452149/
关键词：
Broadband ISDN Access Network Shuffle Ring Network Bidirectional Shuffle Ring Network Skewed Traffic Multicast Distributed Control Traffic Performance リング状ネットワ-ク集中制御 Metropolitan Area Network Shaffle Exchange パケット順序保証

项目摘要

Toward the realization of Broadband ISDN (B-ISDN) many issues are to be addressed. Among them, how to compose a reliable and cost-effective access network is one of the utmost important problem to be solved. The goal of our study is to design such an access network or very high speed Network based on the Shuffle Ring Network (SR Network) which we proposed before and to clarify and further improve the performances of it. The main results are as follows.1. The detailed traffic handling performance of SR Network under the practical condition, namely where the buffer sizes are finite are shown. 2. Countermeasures against the skewed traffic are proposed and it is shown that the deterioration of traffic performance due to skewed traffic can be avoided by an distributed manner. 3. It is mandatory to keep the sequence of packets when SR Network is used as an access network of B-ISDN. To keep the packet sequence, a path assignment algorithm iq shown in which each node determine the path for a call to the next node in a fully distributed fashion. 4. For the improvement of the reliability of SR Network, the Bidirectional Shuffle Ring Network is proposed in which a bidirectional rings are used. Some algorithms for overload avoidance and path assignment are also proposed. 5. An excellent way for multicast in which a certain band width is assigned to each call is proposed and an routing algorithm is shown for wider class networks in which the SR Network is included. 6. The non-blocking condition at call level is theoretically given for networks which are very generalize and which include Shuffle Ring Network. 7. Utilizing the above results, the practical way to utilize SR Network as access network for B-ISDN and as Metropolitan Area Network is shown.

宽带ISDN （B-ISDN）的实现需要解决许多问题。其中，如何组建一个可靠、经济的接入网是一个亟待解决的重要问题。我们的研究目标是在我们之前提出的Shuffle Ring network （SR network）的基础上设计这样一个接入网或超高速网络，并明确和进一步提高其性能。主要研究结果如下：给出了SR网络在实际条件下，即缓冲区大小有限情况下的详细流量处理性能。2. 提出了针对倾斜交通的对策，并证明了通过分布式的方式可以避免由于倾斜交通而导致的交通性能的恶化。3. SR Network作为B-ISDN的接入网时，必须保留报文的顺序。为了保持数据包顺序，展示了一种路径分配算法，其中每个节点以完全分布式的方式确定呼叫下一个节点的路径。4. 为了提高SR网络的可靠性，提出了一种使用双向环的双向洗牌环网。提出了一些过载避免和路径分配算法。5. 提出了一种极好的多播方式，其中为每个呼叫分配一定的带宽，并为包含SR网络的更广泛的类网络展示了一种路由算法。6. 理论上给出了包括洗牌环网在内的广义网络的呼叫级无阻塞条件。利用上述结果，给出了利用SR网作为B-ISDN接入网和城域网的实用方法。