A Virtual Clock Based Congestion Control for ATM Network

• Main Authors: Chih-Yi Shyu, 徐至義
• Other Authors: Suh-Yin Lee
• Format: Others
• Language: en_US
• Published: 1994
• Online Access: http://ndltd.ncl.edu.tw/handle/77283366060824883520

碩士 === 國立交通大學 === 資訊工程研究所 === 82 === Owing to the rapid development of hardware, we are able to integrate services which are provided by dedicated networks at the old days and to provide the more popular multimedia services. In Broadband Integrate Service Digital Network (B- ISDN), a universal network interface can be provided to users. In this the construction cost of networks can be reduced. However, the traffic characteristics of multimedia services vary dramastically. Besides, the real time constraint of services has to be met. It has been the main goal of efficient congestion control for Asynchronous Transfer Mode (ATM) network to satisfy the Quality of Service (QOS) requested by users and maximize the utilization of network. A number of works on congestion control for ATM network have been published recently. However, they are either without practical algorithm or lack of flexibility and efficiency. In this thesis, we propose a virtual clock based congestion control. In addition to reserving the features of virtual clock algorithm such as efficiency and flexibility, we propose a method to solve the unbounded delay problem. It is shown by simulation that our scheme is able to bound the end-to-end delay and to perform as expected at other aspects like cell loss rate, queue length, throughput.