无线光局域网介质访问自适应控制

Media access adaptive control in WLAN

现有访问控制方法无法有效提升数据传输效率、降低冲突发生概率,丢包率高,为此研究无线光局域网介质访问自适应控制方法。设计介质访问控制协议,根据该协议将访问传输数据分成握手阶段和传输数据包阶段。根据无线光局域网络中站已待定的传输尝试率和传输站的帧,构建自适应控制的MAC算法,计算获得网络访问的吞吐量。依据计算结果通过改进ABOTMAC算法,使用时隙利用率得出传输信道冲突的有效估测,实现访问自适应控制。实验结果表明,所提方法的丢包率始终低于20%,且数据传输效率最高值达到了57%,明显优于传统方法,说明该方法能够加强数据传输效率,具有耗时短和控制效果较好的优点。

The congestion degree,signal-to-noise ratio and delay are taken as evaluation indexes.The experimental results show that the proposed method can maximize the efficiency of communication data collection and improve the efficiency and accuracy of collection.The media access control protocol is designed.According to the protocol,the access and transmission data are divided into handshake stage and packet stage.According to the undetermined transmission attempt rate and the frame of transmission station in wireless optical local area network,an adaptive MAC algorithm is constructed to calculate the throughput of network access.According to the calculation results,by improving the algorithm of ABOTMAC,the effective estimation of transmission channel conflict is obtained by using the slot utilization ratio,and the access adaptive control is realized.The experimental results show that the packet loss rate of proposed method is always lower than 20%,and the highest data transmission efficiency is 57%,which is obviously superior to traditional method,which shows that the method can enhance data transmission efficiency,and has the advantages of short time and good control effect.