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A data link control protocol for wireless ATM networks with adaptive coding rate

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3 Author(s)
Chan, K.S. ; Dept. of Electron. Eng., City Univ. of Hong Kong, China ; Chan, S. ; Ko, K.T.

We propose a new data link control protocol for wireless ATM networks. This new protocol can support both real time and non-real-time services by adopting different error control mechanisms. For real-time traffic, only forward error control (FEC) is used for error correction. For non-real-time traffic, a hybrid automatic repeat request (ARQ) scheme is adopted to reduce the cell loss ratio to a minimum level. In both the FEC and hybrid ARQ schemes, the coding rate is adapted to the channel conditions. When the signal-to-noise ratio (SNR) is high, the coding rate may be higher; while when the channel is bad, the coding rate is adjusted to be lower. The automatic coding rate adaptiveness guarantees the high utilization of the scarce wireless channel resources

Published in:

High Performance Switching and Routing, 2000. ATM 2000. Proceedings of the IEEE Conference on

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