tailieunhanh - Báo cáo hóa học: " Effective Quality-of-Service Renegotiating Schemes for Streaming Video"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Effective Quality-of-Service Renegotiating Schemes for Streaming Video | EURASIP Journal on Applied Signal Processing 2004 2 280-289 2004 Hindawi Publishing Corporation Effective Quality-of-Service Renegotiating Schemes for Streaming Video Hwangjun Song School of Electrical Engineering Hongik University 72-1 Sangsu-dong Mapo-gu Seoul 121-791 Korea Email hwangjun@ Dai-Boong Lee School of Electrical Engineering Hongik University 72-1 Sangsu-dong Mapo-gu Seoul 121-791 Korea Email neferian@ Received 13 November 2002 Revised 25 September 2003 Effective quality-of-service renegotiating schemes for streaming video is presented. The conventional network supporting quality of service generally allows a negotiation at a call setup. However it is not efficient for the video application since the compressed video traffic is statistically nonstationary. Thus we consider the network supporting quality-of-service renegotiations during the data transmission and study effective quality-of-service renegotiating schemes for streaming video. The token bucket model whose parameters are token filling rate and token bucket size is adopted for the video traffic model. The renegotiating time instants and the parameters are determined by analyzing the statistical information of compressed video traffic. In this paper two renegotiating approaches that is fixed renegotiating interval case and variable renegotiating interval case are examined. Finally the experimental results are provided to show the performance of the proposed schemes. Keywords and phrases streaming video quality-of-service token bucket renegotiation. 1. INTRODUCTION In recent years the demands and interests in networked video have been growing very fast. Various video applications are already available over the network and the video data is expected to be one of the most significant components among the traffics over the network in the near future. However it is not a simple problem to transmit video traffics efficiently through the network because the video requires a