Is physical layer error correction sufficient for video multicast over IEEE 802.11g networks?

Authors:
Özgü Alay;Thanasis Korakis;Yao Wang;Shivendra Panwar
Affiliations:
Department of Electrical and Computer Engineering, Polytechnic Institute of NYU, Brooklyn, NY;Department of Electrical and Computer Engineering, Polytechnic Institute of NYU, Brooklyn, NY;Department of Electrical and Computer Engineering, Polytechnic Institute of NYU, Brooklyn, NY;Department of Electrical and Computer Engineering, Polytechnic Institute of NYU, Brooklyn, NY
Venue:
CCNC'09 Proceedings of the 6th IEEE Conference on Consumer Communications and Networking Conference
Year:
2009

Citing 7
Cited 1

Reliable broadband communication using a burst erasure correcting code

SIGCOMM '90 Proceedings of the ACM symposium on Communications architectures & protocols
Effective erasure codes for reliable computer communication protocols

ACM SIGCOMM Computer Communication Review
An Experimental Study of Adaptive Forward Error Correction for Wireless Collaborative Computing

SAINT '01 Proceedings of the 2001 Symposium on Applications and the Internet (SAINT 2001)
Experimental Evaluation of Error Control for Video Multicast over Wireless LANs

ICDCSW '01 Proceedings of the 21st International Conference on Distributed Computing Systems
A Staggered FEC System for Seamless Handoff in Wireless LANs: Implementation Experience and Experimental Study

ISM '07 Proceedings of the Ninth IEEE International Symposium on Multimedia
An experimental study of packet loss and forward error correction in video multicast over IEEE 802.11b network

CCNC'09 Proceedings of the 6th IEEE Conference on Consumer Communications and Networking Conference
Cross-Layer Architecture for Adaptive Video Multicast Streaming Over Multirate Wireless LANs

IEEE Journal on Selected Areas in Communications

An experimental study of packet loss and forward error correction in video multicast over IEEE 802.11b network

CCNC'09 Proceedings of the 6th IEEE Conference on Consumer Communications and Networking Conference

Quantified Score

Hi-index	0.00

Visualization

Abstract

Wireless video multicast enables delivery of popular events to many mobile users in a bandwidth efficient manner. However, providing good and stable video quality to a large number of users with varying channel conditions remains elusive. A promising solution to this problem is the use of packet level Forward Error Correction (FEC) mechanisms. However, the adjustment of the FEC rate is not a trivial issue due to the dynamic wireless environment. This decision becomes more complicated if we consider the multi-rate capability of the existing wireless LAN technology that adjusts the transmission rates based on the channel conditions and the coverage range. In this paper, we explore the dynamics of Forward Error Correction (FEC) schemes in multi-rate wireless local area networks. We study the fundamental behavior of a 802.11g network which already has embedded error correction in physical layer, under unicast and broadcast modes in a real outdoor environment. We then explore the effectiveness of packet level FEC over wireless networks with multi-rate capability. In order to evaluate the system quantitatively, we implemented a prototype using open source drivers, and ran experiments. Based on the experimental results, we provide guidelines on how to efficiently use FEC for wireless multicast services in order to improve the overall system performance. We argue that even there is a physical layer error correction, using a higher transmission rate together with stronger FEC is more efficient than using a lower transmission rate with weaker FEC for multicast.