A comparison of mechanisms for improving TCP performance over wireless links
Conference proceedings on Applications, technologies, architectures, and protocols for computer communications
Equation-based congestion control for unicast applications
Proceedings of the conference on Applications, Technologies, Architectures, and Protocols for Computer Communication
On the Utility of FEC Mechanisms for Audio Applications
COST 263 Proceedings of the Second International Workshop on Quality of Future Internet Services
I-TCP: indirect TCP for mobile hosts
ICDCS '95 Proceedings of the 15th International Conference on Distributed Computing Systems
ARC: the analytical rate control scheme for real-time traffic in wireless networks
IEEE/ACM Transactions on Networking (TON)
Understanding Internet traffic streams: dragonflies and tortoises
IEEE Communications Magazine
A survey of packet loss recovery techniques for streaming audio
IEEE Network: The Magazine of Global Internetworking
A hybrid FEC-ARQ protocol for low-delay lossless sequential data streaming
ICME'09 Proceedings of the 2009 IEEE international conference on Multimedia and Expo
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Multimedia data transmission over wireless networks often suffers from delay, jitter and packet loss. The main problem to implement a wireless network is the high and variable bit error rate in the radio link, making it necessary to use an additional error control mechanism. The traditional techniques for error control are ARQ (Automatic Repeat Request) and FEC (Forward Error Correction). The ARQ technique works better than FEC, if the bit error rate in the channel is low, and worse, if the bit error rate is high. Thus, hybrid ARQ/FEC techniques can improve the performance. In this paper, a novel hybrid ARQ/FEC scheme is analyzed in an environment of real-time applications. We focus in a simple FEC scheme which has been standardized by IETF [11]. It consists in adding a low quality copy of the original packet n to the packet n + ø. If packet n is lost in the network, it can be correctly recovered if packet n +ø is correctly received. The effect of link layer (LL) parameters like the number of LL transmission attempts, offset ø , LL packet size, and FEC code rate on the TFRC (TCP Friendly Rate Control)and UDP performance is evaluated. We show that the combination of FEC and ARQ reduces the number of retransmissions and the time spent by a packet in the buffer at the output of the wireless link. We validate our analytical results using ns-2 [9]simulation