An Efficient Cooperative Retransmission for Wireless Regenerative Relay Networks

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Executive Summary

This paper considers retransmission mechanisms in wireless regenerative relay networks. The retransmission can be realized in a cooperative manner with the assistance of all available relays. This may result in high overall power consumption due to a considerable number of overlapped packets in the retransmission, especially when the number of relays is large. In this paper, the authors propose a Cooperative Retransmission (CR) scheme based on relay cooperation and binary XOR operation to significantly reduce the number of packets to be retransmitted for a more power efficient system with non-overlapped retransmission.

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