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p-坚持CSMA/CD协议在计算机终端数据发送上有着广泛的应用。针对计算机终端中p-坚持CSMA/CD协议的信道利用率的问题进行研究,为了能更好的利用信道发送数据,提高信道利用率,采用了统计方法中的贝叶斯决策统计理论,通过全概率公式拆分,对p-坚持CSMA/CD协议中的参数p进行动态自适应拟合的一种CSMA/CD协议方法,并进行改进使之有更好的信道利用率。用MATLAB2010a进行模拟仿真实验,得出改进后的自适应p-坚持CSMA/CD协议比静态的p-坚持CSMA/CD协议对信道有高20%左右的利用率。
p-insisted CSMA / CD protocol has a wide range of applications in computer terminal data transmission. In order to make better use of the channel to send data and improve the channel utilization rate, the Bayesian decision-making statistical theory in statistical methods is adopted to solve the problem of p-upholding channel utilization of CSMA / CD protocol in computer terminals. Probability formula splitting, a CSMA / CD protocol method for dynamic adaptive fitting of parameter p in the p-adhering CSMA / CD protocol, is improved and improved to make it have better channel utilization. With MATLAB2010a, simulation experiments show that the improved adaptive p-CSMA / CD protocol achieves about 20% higher channel utilization than the static p-persistent CSMA / CD protocol.