Journal of Applied Sciences ›› 2013, Vol. 31 ›› Issue (3): 221-227.doi: 10.3969/j.issn.0255-8297.2013.03.001

• Communication Engineering • Previous Articles     Next Articles

Adaptive Device-to-Device Cooperative Retransmission for Improving Multicast Efficiency in Cellular Systems

ZHOU Bin1, HU Hong-lin2,3   

  1. 1. Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences,
    Shanghai 200050, China
    2. Key Laboratory of Wireless Sensor Network and Communication, Chinese Academy of Sciences,
    Shanghai 200335, China
    3. Shanghai Research Center for Wireless Communications, Shanghai 200335, China
  • Received:2011-12-03 Revised:2012-03-12 Online:2013-05-28 Published:2012-03-12

Abstract: We focus on device-to-device (D2D) enhanced multicast transmission in cellular systems, formulate the relationship between the number of retransmitters and the efficiency of D2D retransmission, and derive a closed-form expression to search the optimal number of D2D retransmitters and the optimal sub-cluster partition. Based on the analysis, we propose an adaptive D2D cooperative retransmission scheme with limited channel feedback, which adaptively selects the number of retransmitters and the optimal routing. Exploiting the multicast gain and multi-channel diversity jointly, the proposed scheme achieves a significant gain in terms of spectrum efficiency compared to its counterparts with a fixed number of retransmitters.

Key words: cooperative retransmission, spectrum efficiency, device-to-device (D2D) communication, multicast

CLC Number: