Affiliation:
1. Carroll University, USA
2. University of North Carolina, USA
Abstract
Quality of Internet audio is highly sensitive to packet loss caused by congestion in links. Packet loss for audio is normally rectified by adding redundancy using Forward Error Correction (FEC). Alternatively, path diversity mechanisms are used to improve reliability and thus session quality. To achieve optimized receiver audio quality for transmissions using single or multiple paths, the authors propose a self-adaptive joint Error and Rate Control framework based on packet loss prediction and on-line quality assessment. The Error Control chooses appropriate FEC proactively to preserve quality with optimal bandwidth, using a Markov Decision Process (MDP) and a stochastic inventory control, a novel approach for multimedia error recovery. The Rate Control uses a quality optimization model to determine the optimal dispersion over single or multiple paths. This paper will present results using simulation and Internet experiments to show the superiority of this mechanism over other similar techniques.
Reference36 articles.
1. Akella, A., Pang, J., Maggs, B., Seshan, S., & Shaikh, A. (2004). A comparison of overlay routing and multihoming route control. In Proceedings of ACM Special Interest Group on Data Communication (SIGCOMM).
2. Andersen, D. G., Balakrishnan, H., Kaashoek, M. F., & Morris, R. (2001). Resilient Overlay Networks. In Proceedings of ACM Symposium on Operating Systems Principles (SOSP).
3. Reliable Video Communication over Lossy Packet Networks using Multiple State Encoding and Path Diversity;J.Apostopoulos;Proceedings of Visual Communications and Image Processing,2001
4. Bolot, J., Fosse-Parisis, S., & Towsley, D. (1999). Adaptive FEC-Based Error Control for Internet Telephony. In Proceedings of IEEE Conference on Computer Communications (INFOCOM).