Reducing feedback load of opportunistic multicast scheduling over wireless systems

Shiang Ming Huang*, Jenq Neng Hwang, Yaw-Chung Chen

*Corresponding author for this work

Research output: Contribution to journalArticle

9 Scopus citations


Opportunistic multicast scheduling (OMS) requires the subscribers to feed back their instantaneous channel conditions frequently, and the feedback load increases linearly as the number of subscribers in the system increases. In this letter, we propose a Weakly Consistent OMS scheme for feedback reduction. The contribution of the proposed scheme is twofold: 1) feedback load is reduced while the multicast throughput performance remains comparable with the case of full feedback, and 2) no precise knowledge of the wireless fading channel is required. Performance evaluation through realistic WiMAX simulations shows that our proposed scheme can significantly reduce 65% of the feedback load while achieving 98% multicast throughput performance compared with the case of full feedback.

Original languageEnglish
Article number5610963
Pages (from-to)1179-1181
Number of pages3
JournalIEEE Communications Letters
Issue number12
StatePublished - 1 Dec 2010


  • Feedback reduction
  • opportunistic multicast scheduling (OMS)

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