关键词: 无线网状网，网络编码，多路径TCP，自由度

Abstract: It is a challenge that network coding achieves wide use in wireless mesh networks. Network coding must be compatible or friendly with TCP in practice. We proposed a mechanism that naturally adds network coding to current network systems. In our scheme, according to destination feedback degree of freedom of encoding block, the source node modifies the coded data block and delays of packet delivery minimize reordering and timeouts. Using multipath routing,the source side can send more encode packets and the transmission rate becomes more faster, as a result, the network achieves higher throughput compared to TCP in the presence of lossy wireless links. Comprehensive simulations and resups verify the validation of the theoretical results in the paper.

Key words: Wireless mesh networks,Network coding,Multipath TCP,Degree of freedom