caa a22 4500 605446598 CHVBK 20210128100127.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s11042-014-2163-3 doi (NATIONALLICENCE)springer-10.1007/s11042-014-2163-3 Packet importance based scheduling strategy for H.264 video transmission in wireless networks [Elektronische Daten] [Fan Li, Danyang Zhang, Liejun Wang] This paper investigates the problem of H.264 video transmission in wireless networks. We propose a packet scheduling algorithm based on the packet quality contribution index (PQCI) of H.264 video packet. The PQCI is estimated not only by the quality distortion made for the current frame, but also by that made for the frames which are directly or indirectly related with current frame. A dual-decoder-model (DDM) algorithm is proposed for the PQCI estimation. In DDM algorithm, we develop a novel architecture with two simulated decoders in the sender. To reduce the computational complexity, an estimated-model (EM) algorithm is also proposed. In EM algorithm, the coding characters of video that are pre-coded are extracted for the PQCI estimation. The results demonstrate that our schemes can bring a significant gain to the end-to-end video quality with respect to traditional methods. Springer Science+Business Media New York, 2014 Multimedia communication nationallicence Packet distortion nationallicence Packet loss nationallicence Scheduling algorithms nationallicence Li Fan School of Electronic and Information Engineering, Xi'an Jiaotong University, 710049, Xi'an, People's Republic of China aut Zhang Danyang School of Electronic and Information Engineering, Xi'an Jiaotong University, 710049, Xi'an, People's Republic of China aut Wang Liejun School of Information Science and Engineering, Xinjiang University, 830046, Urumqi, People's Republic of China aut Multimedia Tools and Applications Springer US; http://www.springer-ny.com 74/23(2015-12-01), 10259-10275 1380-7501 74:23<10259 2015 74 11042 https://doi.org/10.1007/s11042-014-2163-3 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11042-014-2163-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Li Fan School of Electronic and Information Engineering, Xi'an Jiaotong University, 710049, Xi'an, People's Republic of China aut NATIONALLICENCE 700 1- Zhang Danyang School of Electronic and Information Engineering, Xi'an Jiaotong University, 710049, Xi'an, People's Republic of China aut NATIONALLICENCE 700 1- Wang Liejun School of Information Science and Engineering, Xinjiang University, 830046, Urumqi, People's Republic of China aut NATIONALLICENCE 773 0- Multimedia Tools and Applications Springer US; http://www.springer-ny.com 74/23(2015-12-01), 10259-10275 1380-7501 74:23<10259 2015 74 11042