中文摘要：

无线网络中应用网络编码技术的关键是寻找更多有效的编码机会．提出最优化编码机会发现策略，进而与现有编码感知路由协议相结合，并以节点编码机会的数量作为最佳转发节点的判据，提出一种可充分考虑节点编码机会的编码感知路由协议——ExCAR．运用NS-2仿真验证算法的有效性，结果表明该协议有利于提升网络吞吐量，提高分组投递率．

英文摘要：

A key in applying networking coding techniques in wireless networks is to explore more coding opportunities. A maximal coding opportunity discovery scheme is proposed, and by combining it with existing coding-aware routing protocols, a coding-aware routing protocol termed extended coding aware routing （Ex- CAR） is presented. The protocol takes maximal coding opportunity into consideration and selects the coding node number as a metric to determine the best forwarding node along the optimal route. Simulation experi- ments in NS-2 show that the proposed algorithm is effective, and ExCAR can enhance the network throughput and improve packet delivery rate.