Title: An adaptive ARQ timeout approach for audio streaming over Bluetooth

Authors: Ling-Jyh Chen, Rohit Kapoor, Sewook Jung, M.Y. Sanadidi, Mario Gerla

Addresses: Institute of Information Science, Academia Sinica, 128, Sec. 2, Academia Road, Taipei 11529, Taiwan. ' Qualcomm Inc., 5775 Morehouse Drive, San Diego, CA 92121, USA. ' Broadcom Corporation, 16340 West Bernardo Drive, San Diego, CA 92127, USA. ' Department of Computer Science, University of California at Los Angeles, Los Angeles, CA 90095, USA. ' Department of Computer Science, University of California at Los Angeles, Los Angeles, CA 90095, USA

Abstract: In this paper we study the application of audio streaming over Bluetooth and propose an enhancement to the Bluetooth link layer ARQ mechanism to compensate for channel degradation and to better support audio streaming. Specifically, our scheme adaptively sets the ARQ timeout value based on current channel conditions. We show through simulation and testbed experiments that the adaptive ARQ improves the streaming quality significantly compared to the |vanilla| link layer of Bluetooth, especially in noisy environments. Our proposed approach is simple to implement and can actually be extended to the link layer of any wireless technologies.

Keywords: audio streaming; bluetooth; adaptive ARQ; BER; channel degradation; ARQ timeout value; link layer.

DOI: 10.1504/IJWMC.2009.029345

International Journal of Wireless and Mobile Computing, 2009 Vol.3 No.4, pp.255 - 264

Published online: 22 Nov 2009 *

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