Performance evaluation and comparison of a token ring network with full latency stations and dual latency stations
department or school: Applied Science, Faculty of
department or school: Electrical Engineering, Department of
data provider: DSpace
degree campus: UBCV
creator: Lo, Edward Chi Lup
issued: 2010-09-16T19:51:46Z
issued: 1988
related degree: Master of Applied Science - MASc
degree grantor: University of British Columbia
description: A method of performance improvement of token ring networks is presented, based on the use of stations with two latency states. Station latency is defined as the time delay introduced in passing data through a station. Most token ring protocol standards (e.g. IEEE 802.5 or ANSI X3T9.5) require incoming data to be decoded and encoded in the station before transmission onto the ring. These encoding and decoding operations add significantly to the station latency. The bypassing of the encoding and decoding steps is proposed, which improves the mean message waiting time. A detailed evaluation and comparison of the networks is based on both analytical and simulation results. The performance of identical stations and symmetric traffic is obtained analytically. A discrete event simulation model for a token ring network is written in GPSS for general traffic. Results show a significant reduction in mean waiting time for the dual latency ring, with performance approaching or exceeding that of gated and exhaustive service, for certain ranges of network utilization.
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/28498
note: PERFORMANCE EVALUATION AND COMPARISON OF A TOKEN RING NETWORK FULL LATENCY STATIONS AND DUAL LATENCY STATIONS by EDWARD CHI LUP LO A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF APPLIED SCIENCE in THE FACULTY OF GRADUATE STUDIES E l e c t r i c a l Engineering • We accept t h i s thesis as conforming to the required standard THE UNIVERSITY OF BRITISH COLUMBIA ~ May 1988 © E d w a r d Chi tup Lo, 1988 In presenting this thesis in partial fulfilment of the requirements for an advanced degree at the University of British Columbia, I agree that the Library shall make it freely available for reference and study. I further agree that permission for extensive copying of this thesis for scholarly purposes may be granted by the head of my department or by his or her representatives. It is understood that copying or publication of this thesis for financial gain shall not be allowed without my written permission. Department of i dA L £fi/6~. The University of British Columbia Vancouver, Canada DE-6 (2/88) ABSTRACT A method of performance improvement of token r i n g networks i s presented, based on the use of stations with two latency states. Station latency i s defined as the time delay introduced i n passing data through a s t a t i o n . Most token r i n g protocol standards (e.g. IEEE 802.5 or ANSI X3T9.5) require incoming data to be decoded and encoded i n the s t a t i o n before transmission onto the r i n g . These encoding and decoding operations add s i g n i f i -cantly to the s t a t i o n latency. The bypassing of the encoding and decoding steps i s proposed, which improves the mean message waiting time. A de t a i l e d evaluation and comparison of the networks i s based on both a n a l y t i c a l and simulation r e s u l t s . The performance of i d e n t i c a l stations and symmetric t r a f f i c i s obtained a n a l y t i c a l l y . A d i s c r e t e event simulation model for a token r i n g network i s written i…
has type: Thesis/Dissertation
is shown at: 10.14288/1.0097896
language: eng
degree discipline: Electrical and Computer Engineering
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
scholar level: Graduate
type: Text
identifier URI: http://hdl.handle.net/2429/28498