An adaptive FEC to protect RoHC and UDP-Lite H.264 video critical data

作     者：CHEN Zhi-kui 

作者机构：Networks and System Communications Regional Computer Center University of Stuttgart Stuttgart 70550 Germany 

出 版 物：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 (浙江大学学报（英文版）A辑（应用物理与工程）)

年 卷 期：2006年第7卷第5期

页      面：910-918页

核心收录：

学科分类：0810[工学-信息与通信工程] 08[工学] 081001[工学-通信与信息系统] 

基　　金：Project (Nos. FP6-IST-2003-506997 and FP6-IST-2005-026943)supported partially by the European Information Society TechnologiesFramework Programme 6 Integrated Project: "Daidalos" (European ISTProject: Daidalos  2003~2008) 

主　　题：Adaptive Forward Error Correction (AFEC), H.264, RoHC, UDP-Lite, UMTS, Bluetooth, Critical data, ErroneousSDU 

摘      要：This paper describes how to use an Adaptive Forward Error Correction (AFEC) algorithm to efficiently protect the critical data areas of compressed headers and UDP-Lite packets for data transport in a radio link layer of a wireless connection. Augmented with RoHC and UDP-Lite, for H.264 video transmissions over wireless channels in a heterogeneous wired-wireless environment, the erroneous packet payloads can be useful and better able to cope with lost packets (native UDP case), by adopting some of the erasure and error resilient modes in H.264. The context transfer during inter/intra handover is also discussed. Simu- lations demonstrated that the proposed scenario significantly improves the PSNR performance and video quality.