关键词: 无线网络, 网络编码, 冗余避免, 广播重传

Abstract:

For the purpose of improving the transmission efficiency of the network coding broadcasting retransmission method, thus reducing the retransmission times, an improved network coding broadcasting retransmission algorithms based on redundancy avoiding(INCBRRA) is proposed. After rearrange the receive matrix, it voluntarily avoids redundant transmission of the combination which can not decoded by the receiving nodes, and preferentially codes the lost packets which are conducive to decoding. The analysis results shows that compared to existing algorithms, INCBRRA can reduce the number of retransmission times and improve the transmission efficiency.

Key words: wireless network, network coding, redundancy avoiding, broadcasting retransmission