Title: SB-DRED: a novel congestion control algorithm for H.264 video streaming over 802.11e

Authors: Wen-Ping Lai; En-Cheng Liou

Addresses: Department of Communications Engineering, Yuan Ze University, 135 Yuan-Tung Rd., Chung-Li, Taiwan ' Department of Communications Engineering, Yuan Ze University, 135 Yuan-Tung Rd., Chung-Li, Taiwan

Abstract: The IEEE 802.11e EDCA provides differentiated service for multimedia transmission via in-station multiple access category (AC) queues and virtual collision handling for wireless channel access contention. However, the FIFO nature of AC_VI (AC for Video) limits its performance. To provide further service differentiation among video packets, this paper presents a novel cross-layer design called E-DVFI+SB-DRED, i.e. equal-population-grouping of dispersive-video-frame-importance (E-DVFI) for a precise video importance scheme in the Application layer and segmented-and-bounded dispersive-random-early-detection (SB-DRED) in the MAC layer for a hyperfine video packet mapping algorithm among AC_VI and its lower-priority ACs. PSNR-based performance evaluations and comparisons including the effects of video input rate to AC_VI and cross-traffic via the other ACs have been considered over reference video sequences, and the results show that the proposed cross-layer design consistently outperforms the existing ones, including EDCA, I/P+AM, and our previous study DVFI+DRED.

Keywords: cross-layer design; congestion control; 802.11e; EDCA; E-DVFI; SB-DRED; RLDR; multimedia transmission; multiple access category queues; virtual collision handling; wireless channel access; video streaming; hyperfine video packet mapping; performance evaluation; video input rate; video sequences.

DOI: 10.1504/IJGUC.2012.051427

International Journal of Grid and Utility Computing, 2012 Vol.3 No.4, pp.253 - 270

Received: 23 Feb 2012
Accepted: 07 Jun 2012

Published online: 16 Jan 2013 *

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