DocumentCode :
3371102
Title :
QoS control for real time video stream over hybrid network by wired and wireless LANs
Author :
Takahata, Kazuo ; Uchida, Norihiko ; Shibata, Yoshitaka
fYear :
2003
fDate :
27-29 March 2003
Firstpage :
45
Lastpage :
51
Abstract :
Multimedia communication by packet video stream has become a very important role in our ubiquitous information society. In this paper QoS control of a real-time multimedia communication system under heterogeneous environment by the wired and the wireless networks is proposed. In our suggested system, as channel coding, FEC (forward error correction) method with Reed-Solomon coding is introduced to reduce the packet error rate on the wireless network. On the other hand, as source coding, transcoding methods including transformation of various video codings such as M-JPEG, MPEG and Quicktime, controls of Q-factor within a frame, frame rate and color depth are introduced to maintain the required QOS, particularly the end-to-end throughput. The increases of the required bandwidth by redundant packet addition with FEC can be suppressed by the transcoding functions while the packet error rate is reduced to the accepted value. In order to verify the functionality and the efficiency in our suggested system, numerical simulation was carried out. As the result, our suggested system by combination of transcoding and FEC could correct the packet error rate with accepted order while maintaining constant the frame rate and the amount of data transform.
Keywords :
Reed-Solomon codes; ad hoc networks; channel coding; error statistics; forward error correction; multimedia communication; numerical analysis; quality of service; real-time systems; video coding; wireless LAN; FEC; M-JPEG; MPEG; Q-factor; QoS control; Quicktime; Reed-Solomon coding; channel coding; color depth; end-to-end throughput; forward error correction; frame rate; hybrid network; numerical simulation; packet error rate; packet video stream; real time video stream; real-time multimedia communication; redundant packet addition; source coding; transcoding methods; video coding; wired LAN; wireless LAN; Communication system control; Control systems; Error analysis; Forward error correction; Multimedia communication; Real time systems; Streaming media; Transcoding; Wireless LAN; Wireless networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Advanced Information Networking and Applications, 2003. AINA 2003. 17th International Conference on
Print_ISBN :
0-7695-1906-7
Type :
conf
DOI :
10.1109/AINA.2003.1192842
Filename :
1192842
Link To Document :
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