Document Type

Thesis

Date of Award

12-31-1990

Degree Name

Master of Science in Electrical Engineering - (M.S.)

Department

Electrical and Computer Engineering

First Advisor

Constantine N. Manikopoulos

Second Advisor

Irving Y. Wang

Third Advisor

George Antoniou

Abstract

Local Area Networks carrying multiple priority classes of messages have received considerable attention recently. A simulation model of a symmetric, priority based network, consisting of token ring networks interconnected by a bridge is implemented. Messages are divided into two priority classes, namely, high priority classes and low priority classes. Two different approaches are considered for transmission of high priority messages. [1] Each station transmits the same amount of high priority traffic when the token reaches the station, regardless of the time elapsed from previous token arrival. [2] The amount of high priority traffic transmitted by each station may vary at each token arrival, according to the time spent in the last token rotation. The simulation results are used to evaluate the throughput and delay characteristics of intra and inter network traffic for both priority classes. Results show a significant improvement in low priority message throughput for the second scheme.

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