为了提高无线网络广播传输的效率,针对单跳无线网络提出了采用编码方法的广播传输算法.在传统的无线广播传输模型的基础上,分别实现了基于机会式网络编码的单组合分组广播传输算法和多组合分组广播传输算法.它们采用不同的策略选择多个丢失分组编码组合成重传分组,并通过从编码组合数据分组中恢复丢失分组的方式来提高广播传输的吞吐量.仿真结果表明,新算法在不同无线信道传输模型下相比已有的算法有效地降低了广播传输所需的传输带宽.%Opportunistic network coding (ONC) based broadcast transmission algorithms were proposed to improve the transmission efficiency for wireless single-hop networks. Based on the traditional wireless broadcast transmission model, ONC based solo combination packet broadcast transmission (ONCSB) algorithm and ONC based multiple combination packets broadcast transmission (ONCMB) algorithm were proposed respectively. By employing the method of combination different lost packets with different strategies, the ONCSB and ONCMB can improve the throughput with recovering lost packets via a combination packet efficiently. The simulation results show that either ONCSB or ONCMB can lead to better transmission bandwidth performance compared with other algorithms under different wireless channel conditions.
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