A cross-layer design approach to multicast in wireless networks

Weiyan Ge, Junshan Zhang, Sherman Shen

Research output: Contribution to journalArticlepeer-review

64 Scopus citations


We study rate optimization for multicast communications at the media access control (MAC) layer, and explore transport layer erasure coding to enhance multicast reliability in wireless networks. We start with investigating network models with single-input-single-output (SISO) links. For Threshold-T based multicast policies, we characterize the optimal transmission rates that maximize the throughput in stable networks and in saturated networks, respectively. We investigate the tradeoff between stability and throughput therein. We then generalize our study to network models with multiple-input-multiple-output (MIMO) links and non-i.i.d. channel links, and investigate the optimal transmission rate. In addition, to ensure multicast reliability while no retransmission is required at the MAC layer, we propose to use transport layer erasure coding for reliability enhancement, where the problem boils down to jointly optimizing the transmission rate and the multicast threshold. We provide a solution to this optimization problem accordingly.

Original languageEnglish (US)
Pages (from-to)1063-1071
Number of pages9
JournalIEEE Transactions on Wireless Communications
Issue number3
StatePublished - Mar 2007


  • Erasure coding
  • Multicast
  • Rate optimization
  • Reliable multicast

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics


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