PHY-MAC Cross-Layer Design of Reliable Wireless Multicast Protocol with a Case Study of MB-OFDM WPAN

  • Authors:
  • Jaeeun Na;Cheolgi Kim;Joongsoo Ma

  • Affiliations:
  • School of Engineering, Information and Communications University, Daejeon, 305-732, Korea;School of Engineering, Information and Communications University, Daejeon, 305-732, Korea;School of Engineering, Information and Communications University, Daejeon, 305-732, Korea

  • Venue:
  • ICESS '07 Proceedings of the 3rd international conference on Embedded Software and Systems
  • Year:
  • 2007

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Abstract

Wireless Multimedia Broadcastings have been being promising applications. Recently, the multimedia multicastings have started to be embedded into the legacy wireless networks. To provide high quality multimedia with multicast, wireless multicast ARQ (Automatic Repeat reQuest) scheme is required. In multicast ARQ, multiple receivers may return feedback control packets, such as ACK (Acknowledgement) or NAK (Negative ACK), simultaneously to the transmitter. In this paper, we show that the multiple feedback control packets can be successfully decoded in transmitter without additional hardware cost. Based on the proposition, we described a conceptual flow of wireless multicast algorithm, and then proposed multimedia multicast protocol on Multiband-OFDM Wireless Personal Area Network (MB-OFDM WPAN) specifications. In simulation, we showed that the proposed mechanism reduces the power consumption and achieves improved performance.