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A wireless ATM MAC protocol with combined hybrid ARQ and adaptive scheduling with analysis

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4 Author(s)
Hui Huang ; Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., China ; D. H. K. Tsang ; Tsz-Mei Ko ; P. J. Kuhn

A combined hybrid automatic repeat request (ARQ) error control and adaptive scheduling scheme is proposed for time-division multiple access/time-division duplex medium access control (MAC) protocols in wireless asynchronous transfer mode (ATM) networks. Specifically, with the aid of proper channel modeling, the performance of various error-control schemes is evaluated. Accordingly, type-II hybrid ARQ is chosen as the error recovery scheme to combat fading effects, while adaptive fair-queueing is designed to achieve a fair and efficient resource allocation in wireless channels. In particular, the weight of a connection used in the fair-queueing algorithm dynamically adapts in terms of varying channel conditions and the types of services. Various simulations are conducted in typical indoor wireless ATM networks. It is shown that the proposed scheme can achieve a high throughput and transfer reliability with minimized delay and cell loss rate when compared with the conventional MAC layer control.

Published in:

IEEE Transactions on Vehicular Technology  (Volume:52 ,  Issue: 1 )