Case study: Window-based congestion control in a packet switched network with voice and data transmission

Authors:
Gaurav Pal;Sandeep Agrawal
Affiliations:
Tata Consultancy Services, Gulab Bhawar, 6, Bahadur Shah Zafar Marg, New Delhi 110 002, India;Tata Consultancy Services, Gulab Bhawar, 6, Bahadur Shah Zafar Marg, New Delhi 110 002, India
Venue:
Computer Communications
Year:
1996

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Abstract

A computer simulation of a packet switched network has been made with the intention of providing a tool for analyzing congestion control schemes on networks with voice and non-real-time traffic. A modular package in C named PACNETS has been developed, and two network mesh topologies have been investigated with and without real time traffic. The effect of a window-based flow control strategy on packet delay, network throughput and the percentage of voice packet loss under varying packet generation rates and window sizes has been presented. It was found that the network with non-real-time traffic performed better at a window size of 6 compared to a window size of 12, while the network with combined data and voice traffic performed optimally with a window size of 8 against a window size of 12. In both cases, a packet delay/network throughput trade-off was evident.