The New Jersey Institute of Technology's
Electronic Theses & Dissertations Project

Title:	Fair and efficient transmission over GBPS dual ring networks
Author:	Adas, Abdelnaser M.
View Online:	njit-etd1993-055 (viii, 81 pages ~ 2.5 MB pdf)
Department:	Department of Electrical and Computer Engineering
Degree:	Master of Science
Program:	Electrical Engineering
Document Type:	Thesis
Advisory Committee:	Karvelas, Dionissios (Committee chair) Robbi, Anthony D. (Committee member) Ziavras, Sotirios (Committee member)
Date:	1993-05
Keywords:	Network analysis (Planning) Data transmission Computer networks Local area networks (Computer networks) Metropolitan area networks (Computer networks)
Availability:	Unrestricted
Abstract:	The advances in fiber optics technology provide large bandwidth and enable the support of a wide variety of services. New network architectures have been proposed, such as Metaring and Distributed Queue Dual Bus (DQDB), that try to take advantage of the new capabilities. Because of the very small packet transmission time relative to the feedback time a challenging issue in high speed networks is the efficient and fair share of the channel bandwidth among the competing users. In this thesis we first investigate and compare the performance of the Global and Local Fairness Mechanisms (GFM and LFM, respectively). They have been proposed recently for fair bandwidth allocation in high speed dual ring networks employing destination release. (a slot that has been read by its destination is immediately released and can be used again by other nodes). We show the sensitivity of both mechanisms to various system parameters, such as channel bandwidth and ring latency. We introduce the Dynamic Medium Access Control Mechanism (DMAC) which does not suffer from the limitations of GFM and LFM, introduces fairness in a very effective and efficient way, and is insensitive to the network parameters.