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Proceedings Paper

Performance evaluation of a new fairness control scheme for ring networks with spatial reuse
Author(s): Helen Tang; Ioannis Lambadaris
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Paper Abstract

We consider a ring in which simultaneous transmission of messages by different stations is allowed, a property referred to as spatial reuse. A ring network with spatial reuse can achieve a network level throughput much higher than the channel rate. A widely used scheme to achieve spatial reuse is Buffer Insertion Ring (BIR). However, because non-preemptive priority is given to the ring traffic, BIR scheme can lead to fairness problems in distributing the ring bandwidth among distinct nodes. In this paper, we propose a novel approach that provides fair access to all nodes and features low complexity. Within each node, the proposed approach allocates a separate queue for every upstream node. Each queue receives its fair share of the ring bandwidth based on an assigned weight value. Performance of the proposed scheme in terms of fairness and average packet delay has been evaluated through both simulations and analysis. The results show that the new scheme called Source-Based Queuing (SBQ) can provide fairness with less end-to-end delay compare to the BIR scheme.

Paper Details

Date Published: 8 August 2003
PDF: 11 pages
Proc. SPIE 5244, Performance and Control of Next-Generation Communications Networks, (8 August 2003); doi: 10.1117/12.509441
Show Author Affiliations
Helen Tang, Carleton Univ. (Canada)
Ioannis Lambadaris, Carleton Univ. (Canada)

Published in SPIE Proceedings Vol. 5244:
Performance and Control of Next-Generation Communications Networks
Robert D. van der Mei; Frank Huebner, Editor(s)

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