Performance Evaluation and Fairness Improvement of TCP over ATM GFR in FIFO-Based Mechanisms

Yong-Gu JEON  Hong-Shik PARK  

IEICE TRANSACTIONS on Communications   Vol.E84-B    No.8    pp.2227-2236
Publication Date: 2001/08/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Switching
guaranteed frame rate,  TCP over ATM,  fairness,  FIFO queueing,  scheduling,  

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Recently, the Guaranteed Frame Rate (GFR) service was proposed as a new service category of ATM to support non-realtime data applications and to provide the minimum rate guarantee. To keep the simplicity of GFR as much as possible and overcome defects of FIFO-based mechanisms, we propose a FIFO-based algorithm extending DFBA one to improve the fairness and provide the minimum rate guarantee for a wider range of Minimum Cell Rate (MCR). The key idea is controlling the number of CLP1 cells which are occupying more buffer space than the fair share even when the queue length is below Low Buffer Occupancy (LBO).