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标题：A Review on an Access Point-Based FEC Mechanism for Video Transmission over Wireless LANs
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作者：Ravneet Singh ; Rachna Rajput
期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2015
卷号：3
期号：5
DOI：10.15680/ijircce.2015.0305012
出版社：S&S Publications
摘要：Video transmission over the wireless network faces many challenges. The most critical challenge isrelated to packet loss. To overcome the problem of packet loss, Forward Error Correction is used by adding extrapackets known as redundant packet or parity packet. Currently, FEC mechanisms have been adopted together withAutomatic Repeat request (ARQ) mechanism to overcome packet losses and avoid network congestion in variouswireless network conditions. In the current Adaptive FEC mechanism, the FEC packets are decided by the averagequeue length and average packet retransmission times. The Adaptive FEC mechanisms have been proposed to suit thenetwork condition by generating FEC packets adaptively in the wireless network. However, the current Adaptive FECmechanism has some major drawbacks such as the reduction of recovery performance which injects too manyexcessive FEC packets into the network. This is not flexible enough to adapt with varying wireless network condition.Therefore, the enhancement of Adaptive FEC mechanism (AFEC) known as Enhanced Adaptive FEC (Enface) hasbeen proposed. The aim is to improve recovery performance on the current Adaptive FEC mechanism by injecting FECpackets dynamically based on varying wireless network conditions. Based on the findings, the optimal amount of FECgenerated by Enface mechanism can recover high packet loss and produce good video quality An Enhanced RandomEarly Detection Forward Error Correction (ERED-FEC) mechanism is implemented to improve the quality of videotransmissions over Wireless Local Area Networks (WLANs).
关键词：Forward error correction; Video transmission; Wireless network; Packet loss; Video quality