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�������պ����ѧѧ�� 2004, Vol. 30 Issue (11) :1066-1070    DOI:
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Wireless video streaming oriented packet scheduling algorithm
Niu Jianwei1, He Rui2, Hu Jianping2*
1. School of Electronics and Information Engineering, Beijing Unive rsity of Aeronautics and Astronautics�� Beijing 100083, China;
2. School of Computer Science and Technology, Beijing University of Aeronautics and Astronautics�� Beijing 100083, China

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ժҪ ���ն�ϵͳΪ�о�����,������һ�ֶ˵��˵�����������Ƶ��ϵͳ�ṹ.��һ��GOP(Group Of Picture)��,������Ƶ��VP(Video Packet)����Ƶ��������Ӱ�첻ͬ,�ݴ˶�������Ƶ֡ ����Ҫ��ϵ��.�ڴ˻����������һ�ֻ�����Ƶ֡��Ҫ�Ե�������Ƶ���������㷨WV SPSA(Wireless Video Streaming oriented Packet Scheduling Algorithm),���㷨�ܹ�������Ƶ֡����Ҫ�Զ�̬������Ƶ֡�ķ��ʹ���.����������,���������Ƶ��ϵͳ�ṹ����,WVSPSA�㷨��������Ŀǰ������EDF(Earliest Deadline First )�㷨.
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Abstract�� Based on end-system, an end-to-end wireless video streaming architecture was proposed. The video frame importance was defined in terms of the contribution of the VP(video packet) to the decompression video quality within a GOP(Group Of Picture). Based on this concept, a WVSPSA(wireless video streaming oriented pac ket scheduling algorithm) was proposed, which could dynamically re-order the tr ansmission schedule of the VPs according to the VPs' importance. Simulation resu lts show that the video streaming architecture is practical, and WVSPSA algorith m outperforms the prevalent EDF algorithm.
Keywords�� wireless video   video transmission   video compression   WVSPSA algorit hm   H.264     
Received 2004-06-25;
Fund:

����863�߿Ƽ���չ�ƻ�������Ŀ(2001AA114142)

About author: ţ��ΰ (1969-),��,����֣����,��ʿ��, niujianwei@buaa.edu.cn.
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ţ��ΰ, ����, ����ƽ.һ������������Ƶ���İ������㷨[J]  �������պ����ѧѧ��, 2004,V30(11): 1066-1070
Niu Jianwei, He Rui, Hu Jianping.Wireless video streaming oriented packet scheduling algorithm[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2004,V30(11): 1066-1070
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