TY - JOUR
T1 - Scene-change aware dynamic bandwidth allocation for real-time VBR video transmission over IEEE 802.15.3 wireless home networks
AU - Tseng, Yi Hsien
AU - Wu, Eric Hsiao Kuang
AU - Chen, Gen Huey
N1 - Funding Information:
Manuscript received April 6, 2006; revised August 17, 2006. This work was supported by Chungshan Institute of Science and Technology under the “Wide Band Mobile Communication System Integration Technology” Project 95-EC-17-A-03-R7-02C5 and by Media Tek Inc. under the “Mobile Applications for UWB and CR Technologies” Project. The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Anna Hac.
PY - 2007/4
Y1 - 2007/4
N2 - IEEE 802.15.3, an emerging wireless technology, was designed to provide high-quality multimedia services at home. Dynamic bandwidth allocation for a multimedia connection should be considered in order to achieve higher channel utilization, less buffer and less delay, especially for variable bit rate (VBR) multimedia connections. For real-time VBR videos, the bandwidth requirement should be predicted adaptively for effective channel-time requests. Previously, the adaptive least-mean square (LMS) algorithm with fixed step size was applied to predict channel time requirements due to its simplicity and relatively good performance. However, the performance might degrade when scene changes occurred. In this paper, we modify the variable step-size LMS algorithm and apply it as our predictor (VSSNLMS) so that the prediction errors on scene changes can be effectively reduced. Using the prediction results of VSSNLMS, we propose a dynamic bandwidth-allocation scheme that is scene-change aware and can guarantee the delay bound of real-time VBR videos. Simulation results show that the VSSNLMS predictor is superior to previous LMS-type predictors in performance, and the proposed scheme has better performance in channel utilization, buffer usage, and packet loss.
AB - IEEE 802.15.3, an emerging wireless technology, was designed to provide high-quality multimedia services at home. Dynamic bandwidth allocation for a multimedia connection should be considered in order to achieve higher channel utilization, less buffer and less delay, especially for variable bit rate (VBR) multimedia connections. For real-time VBR videos, the bandwidth requirement should be predicted adaptively for effective channel-time requests. Previously, the adaptive least-mean square (LMS) algorithm with fixed step size was applied to predict channel time requirements due to its simplicity and relatively good performance. However, the performance might degrade when scene changes occurred. In this paper, we modify the variable step-size LMS algorithm and apply it as our predictor (VSSNLMS) so that the prediction errors on scene changes can be effectively reduced. Using the prediction results of VSSNLMS, we propose a dynamic bandwidth-allocation scheme that is scene-change aware and can guarantee the delay bound of real-time VBR videos. Simulation results show that the VSSNLMS predictor is superior to previous LMS-type predictors in performance, and the proposed scheme has better performance in channel utilization, buffer usage, and packet loss.
KW - Dynamic bandwidth allocation
KW - IEEE 802.15.3
KW - NLMS
KW - QoS
UR - http://www.scopus.com/inward/record.url?scp=33947584686&partnerID=8YFLogxK
U2 - 10.1109/TMM.2006.888019
DO - 10.1109/TMM.2006.888019
M3 - 期刊論文
AN - SCOPUS:33947584686
SN - 1520-9210
VL - 9
SP - 642
EP - 654
JO - IEEE Transactions on Multimedia
JF - IEEE Transactions on Multimedia
IS - 3
ER -