@InProceedings{HH2015a, author = {Hellwagner, Hermann and Kacianka, Severin}, booktitle = {MoVid '15 Proceedings of the 7th ACM International Workshop on Mobile Video}, title = {Adaptive Video Streaming for UAV Networks}, year = {2015}, address = {New York, USA}, editor = {Halvorsen, Pal and Dutt, Nikil}, month = {mar}, pages = {25-30}, publisher = {ACM International Conference on Multimedia Systems}, abstract = {The core problem for any adaptive video streaming solution, particularly over wireless networks, is the detection (or even prediction) of congestion. IEEE 802.11 is especially vulnerable to fast movement and change of antenna orientation. When used in UAV networks (Unmanned Aerial Vehicles), the network throughput can vary widely and is almost impossible to predict. this paper evaluates an approach originally developed by Kofler for home networks, in a single-hop UAV wireless network setting: the delay between the sending of an IEEE 802.11 packet and the receipt of its corresponding acknowledgement is used as an early indicator of the link quality and as a trigger to adapt (reduce or increase) the video stream' s bitrate. Our real-world flight-tests indicate, that this avoids congestion and can frequently avoid the complete loss of video pictures which happens without adaptation.}, doi = {10.1145/2727040.2727043}, isbn13 = {978-1-4503-3353-5}, keywords = {Video Streaming, Adaptive Streaming, UAVs, UAV Communication}, language = {EN}, location = {Portland, OR, USA}, talktype = {none} }