Network Coding-Based Network Coding Recovery Scheme

Network coding has been considered as an effective approach to improve the wireless network throughput. However, due to the unreliability of wireless links and the loss of transmission, the decoded node sometimes cannot receive enough native packets to succeed in decoding. So how to recovery decoding failure is a key issue, which is considered as the "coding recovery" problem and has become a hot spot. In this paper, a novel coding recovery scheme is proposed, named as CBCR (Coding-Based Coding Recovery), which makes use of the network coding method to encoded the lost native packets, then retransmit them to the decoded node to help it recovery such decoding failure problem. The experiment is well done on the wireless networks prototype system with several Sun SPOTs, and the results show that CBCR is a promising candidate for coding recovery, and its efficiency and performance are superior to the conventional recovery schemes.