Dynamic rate and FEC adaptation for video multicast in multi-rate wireless networks

Özgü Alay, Thanasis Korakis, Yao Wang, Shivendra Panwar

Research output: Contribution to journalArticle

Abstract

Video multicast over Wireless Local Area Networks (WLANs) faces many challenges due to varying channel conditions and limited bandwidth. 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. In this paper, we propose a novel method which dynamically adapts the transmission rate and FEC for video multicast over multi-rate wireless networks. In order to evaluate the system experimentally, we implemented a prototype using open source drivers and socket programming. Our experimental results show that the proposed system significantly improves the multicast system performance.

Original languageEnglish (US)
Pages (from-to)425-434
Number of pages10
JournalMobile Networks and Applications
Volume15
Issue number3
DOIs
StatePublished - Jun 2010

Keywords

  • Forward error correction
  • IEEE 802.11aa
  • IEEE 802.11b
  • Rate adaptation
  • Video multicast
  • Wireless networks

ASJC Scopus subject areas

  • Software
  • Information Systems
  • Hardware and Architecture
  • Computer Networks and Communications

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