DocumentCode :
2217507
Title :
QoS control of multimedia communication over wireless network
Author :
Takahata, Kazuo ; Uchida, Norihiko ; Shibata, Yoshitaka
Author_Institution :
Fac. of Software & Inf. Sci., Iwate Prefectural Univ., Japan
fYear :
2002
fDate :
2002
Firstpage :
336
Lastpage :
340
Abstract :
In this paper QoS control of a real-time multimedia communication system under heterogeneous environments of wired and wireless networks is proposed. In our suggested system, as channel coding the 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, control 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 a result, our suggested system by combination of transcoding and FEC could correct the packet error rate with an order of 109 while maintaining the frame rate and the amount of data transform constant.
Keywords :
Reed-Solomon codes; code standards; combined source-channel coding; error statistics; forward error correction; multimedia communication; numerical analysis; packet radio networks; quality of service; real-time systems; video coding; 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; heterogeneous environment; multimedia communication; numerical simulation; packet error rate; real time system; redundant packet addition; source coding; transcoding functions; transcoding methods; video coding; wireless network; Channel coding; Communication system control; Control systems; Error analysis; Forward error correction; Multimedia communication; Multimedia systems; Real time systems; Transcoding; Wireless networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Distributed Computing Systems Workshops, 2002. Proceedings. 22nd International Conference on
Print_ISBN :
0-7695-1588-6
Type :
conf
DOI :
10.1109/ICDCSW.2002.1030791
Filename :
1030791
Link To Document :
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