Interactive mobile applications require a highly available multicast service for information dissemination and collaboration, while being able to withstand mobility-induced network connectivity problems. However, efficient and reliable wireless multicast has remained a difficult challenge. We propose a novel wireless multicast scheme that allows more efficient and mobility-proof multicast in mobile cloud environments. Our scheme uses a distributed caching and deferred acknowledgement (ACK) technique to reduce delivery ACK traffic during a multicast session. Packets with pending ACK are cached in selected network nodes to provide fast re-delivery. A distributed multicast tree construction algorithm is also utilized to provide fast topology repair under dynamic network conditions. The tree maintenance requires each node to keep track of its 2-hop neighborhood connectivity. Our scheme’s ability to overcome frequent network topology changes leads to a low message exchange overhead to correct local topology errors.


multicast mobile cloud reliability mobility fail-recovery MAC protocol wireless network 


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Copyright information

© ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering 2012

Authors and Affiliations

  • Ju Wang
    • 1
  • Hui Chen
    • 1
  • Kostadin Damevski
    • 1
  • Jonathan Liu
    • 2
  1. 1.Virginia State UniversityPetersburgUSA
  2. 2.University of FloridaGainesvilleUSA

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