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Optimal bandwidth allocation for non-critical traffics in AFDX network

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4 Author(s)
Jianguo Yao ; Dept. of Electr. Eng., Ecole Polytech. de Montreal, Montreal, QC, Canada ; Guchuan Zhu ; Xue Liu ; Jou, A.

This paper addresses the problem of optimal bandwidth allocation in Avionics Full-Duplex Switched Ethernet (AFDX). Typically, AFDX Network is designed for ensuring a reliable communication among critical applications. As critical traffics occupy only a small portion of the available bandwidth, it is of great interest to exploit the leftover bandwidth for non-critical traffics. In the present work, the bandwidth allocation problem is tackled under the framework of Network Utility Maximization by considering frame length adjustment as flow control mechanism with static virtual link-based routing. The duality theory is applied to decompose the optimization problem into transmission rate control and price update with respect to redundant networks. A distributed algorithm for cooperative bandwidth allocation and price update is developed and the convergence of such a scheme is demonstrated using Lyapunov stability theory. The validity and the effectiveness of the proposed approach are confirmed by numerical simulations.

Published in:

Industrial Electronics and Applications (ICIEA), 2012 7th IEEE Conference on

Date of Conference:

18-20 July 2012

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