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基于ARF(Auto Rate Fallback)协议与反向信道估计机制,提出了一种基于IEEE802.11基本机制的Wi-Mesh网络混合速率控制协议HRC(Hybrid Rate Control)。HRC协议避免了节点在信道处于稳定状态时提高数据帧发送速率,通过反向信道估计机制可以实时地调整节点数据帧发送速率匹配信道质量的快速变化,从而达到更好的系统性能。仿真结果表明:HRC协议较ARF协议可以提高数据帧发送成功率,提高无线带宽的利用率。
Based on Auto Rate Fallback (ARF) protocol and reverse channel estimation mechanism, a Hybrid Rate Control (HRC) protocol for Wi-Mesh network based on IEEE802.11 basic mechanism is proposed. The HRC protocol avoids the node increasing the data frame transmission rate when the channel is in a steady state. The reverse channel estimation mechanism can adjust the rapid change of the node data frame transmission rate matching channel quality in real time to achieve better system performance. The simulation results show that the HRC protocol can improve the success rate of data frame transmission and improve the utilization of wireless bandwidth compared with ARF protocol.