This paper is concerned with block acknowledgement (ACK) mechanisms in wireless regenerative relay networks. In an N-relay network, a total of (2N+1) block ACK packets is required to acknowledge the data transmission between source and destination nodes via the N-relay nodes. In this paper, the authors propose a block ACK scheme based on network coding (NC) to significantly reduce the ACK overheads by N block ACK packets. In addition, this achieves a reduction of N(N–1) computational operators. Particularly, we derive the error probability of the determination of the packets to be retransmitted at the source and relays, which shows that the NC-based scheme also improves the reliability of block ACK transmissions.
- wireless systems
- relay networks
- data transmission
Vien, Q. T., Nuygen, H., Choi, J., Stewart, B., & Tianfield, H. (2012). Network coding-based block acknowledgement scheme for wireless regenerative relay networks. IET Communications, 6(16), 2593-2601 . https://doi.org/10.1049/iet-com.2011.0681