tailieunhanh - Doctoral thesis summary: Research improved control mechanisms at the network nodes

Research objectives: Studying and evaluation of active queue management mechanisms to find out the advantages and disadvantages of each mechanism, in order to classify and evaluate application performance for mechanisms and using fuzzy logic to improve active queue management mechanism; the results of the first goals is to perform study motivation first and will be the foundation for the theory and simulation improvements of the thesis. | HUE UNIVERSITY COLLEGE OF SCIENCES NGUYEN KIM QUOC RESEARCH IMPROVED CONTROL MECHANISMS AT THE NETWORK NODES MAJOR COMPUTER SCIENCE CODE ABSTRACT OF THE THESIS HUE 2015 The thesis had implemented at College of Sciences Hue University Academic Supervisor Prof. Dr. Nguyen Thuc Hai Assoc. Prof. Dr. Vo Thanh Tu Reviewer 1 . Reviewer 2 . Reviewer 3 . This thesis will be reported at Hue University Date Time . . .A. The thesis can be found at 1. National Library of Vietnam Hanoi 2. Learning Resource Centers - Hue University 3. Center for Information and Library College of Sciences Hue University 1 PREFACE Internet is a global networking system which ensures a continuity between computer systems and equipment on a large scale. Internet is growing not only in the terms of connection but also diversity of the application layers. Therefore Internet congestion is inevitable. In order that transmission lines may be smooth congestion control at the network nodes plays a very important role for the Internet operational efficiency and reliability for users. To study and improve congestion control mechanism at the network nodes the introduction of the thesis comes from general research of domestic and international control situation of congestion at the network nodes in order to show the scientific and necessary nature of the thesis. Thence the thesis may set out the study motivation and study goals. Next the thesis has proposed study methodology and study subjects in order to perform the study goals and finally the introduction presents the layout and contributions of the thesis. 1. Scientific and necessary nature of the thesis There are two common options for congestion control which consists of improving the capacity of hardware devices and using software techniques. Improving the capacity of hardware devices is necessary but it is so costly hard to be sync and the efficiency is still not high. However using software techniques to control congestion is highly .