关键词: 车载自组织网, 分布式 TDMA, 协作通信, 网络编码, 数据接收概率, 数据传输时延, 丢包率

Abstract: A cooperative network coding communication method based on distributed TDMA ( time division multi-ple access) was proposed for the VANETs uplink application scenario． The cooperative node uses the MIMO_NC technology to encode its own service data and packets that failed to be transmitted by other nodes，so as to coopera-tively retransmit the failed data packets while transmitting their own service data． The proposed method utilizes the intrinsic mechanism of distributed TDMA to confirm the data transmission result，and uses the message carrying mechanism to exchange relevant control information to avoid sending special control packets． The theoretical and experimental results show that the proposed method can significantly improve the packet reception probability and effectively reduce the packet transmission delay and packet dropping rate．

Key words: vehicular ad hoc network, distributed TDMA, cooperative communication, network coding, packet reception probability, packet transmission delay, packet dropping rate