Title :
A novel cross layer design approach for video transmission over wireless ad hoc networks
Author :
Wu, Zheng ; Wong, Wai-Choong ; Wu, Jiankang
Author_Institution :
Sch. of Inf. Sci. & Eng., Grad. Univ. of Chinese Acad. of Sci., Beijing, China
Abstract :
Video transmission over wireless ad hoc networks is very sensitive to temporal dynamics of the wireless channel. In order to achieve good end to end performance, it is necessary for upper layers to quickly adapt to the variations of the wireless links. Based on this motivation, we propose a novel cross layer design (CLD) which employs an adaptive link estimator to ensure reliable transmissions. The link-quality estimation scheme can provide accurate link quality information for routing decisions and predicts the link characteristics for the next time interval by using a Kalman filter. Through simulations and experiments we demonstrate that the proposed cross layer approach can quickly adapt to the temporal dynamics of the links, accurately predict the link characteristics and improve the robustness of video transmission over mobile ad hoc networks.
Keywords :
ad hoc networks; adaptive Kalman filters; radio networks; telecommunication network routing; video communication; wireless channels; Kalman filter; adaptive link estimator; cross layer design; link-quality estimation; mobile ad hoc network; video transmission; wireless ad hoc network; wireless channel; Bandwidth; Cross layer design; Delay; Mobile ad hoc networks; Network topology; Prediction methods; Robustness; Routing; State estimation; Wireless sensor networks; Ad Hoc Networks; Cross Layer Design; Link Quality Estimation; UKF; Video Transmission;
Conference_Titel :
Cyber-Enabled Distributed Computing and Knowledge Discovery, 2009. CyberC '09. International Conference on
Conference_Location :
Zhangijajie
Print_ISBN :
978-1-4244-5218-7
Electronic_ISBN :
978-1-4244-5219-4
DOI :
10.1109/CYBERC.2009.5342211
