Title :
An IP DiffServ framework for real-time video transmission
Author :
Chen, Min ; Wei, Gang ; Zhu, Xiaosong
Author_Institution :
Dept. of Electron. & Commun. Eng., South China Univ. of Technol., Guangzhou, China
Abstract :
This paper presents an improved IP differentiated services (DiffServ) framework, which is suitable for real-time video transmission. Especially, we investigate MPEG-4 video transmission. Based on the feature of MPEG-4 flow and the extent of network congestion, implements a new DiffServe marking algorithm. In the border router, we propose a new scheduling algorithm, called the bit-based weight time slot compensate (BWSC) scheduling algorithm, which dynamically adjusts the weighted quantum of service. Under the condition that network bandwidth can´t guarantee the demand of MPEG-4 real-time transmission, the PSNR comparison of restored MPEG-4 video frame sequence verifies our method has much better performance that best-effort network. End-to-end delay and delay jitter also meet the real-time transmission demand in the improved DiffServe network.
Keywords :
IP networks; delays; real-time systems; scheduling; telecommunication congestion control; telecommunication network routing; timing jitter; visual communication; IP DiffServe framework; MPEG 4 video transmission; bit based weight time slot compensate scheduling algorithm; delay jitter; end to end delay; marking algorithm; network congestion; real time video transmission; Bandwidth; Delay; Diffserv networks; Jitter; MPEG 4 Standard; Round robin; Scheduling algorithm; Streaming media; Telecommunication traffic; Traffic control;
Conference_Titel :
Communication Technology Proceedings, 2003. ICCT 2003. International Conference on
Print_ISBN :
7-5635-0686-1
DOI :
10.1109/ICCT.2003.1209860
