针对移动终端接入用户和数据的特征难以准确判定,影响移动终端接入控制精准度的问题,提出一种基于EVM(Error Vector Magnitud)测量算法的接入控制技术.考虑到环境中噪声和其他干扰因素影响,以Qos(Quality of Srvice)条件为用户的初始接入条件,计算满足该条件的用户或数据的特征,将特征值转换为权重因子作为接入控制参照.采用EVM测量算法计算终端信道内外信号间的差值,结合用户权重因子推导得到移动终端的接入门限,求解不同用户门限值与控制数值间递增和递减函数,按照函数的优先级顺序,实现移动终端接入的精准控制.实验数据证明,所提方法接入控制精准度高,控制后终端传输时延、阻塞率得到了明显的改善,数据到达率也有明显提升.
Mobile Terminal Access Control Technology Based on EVM Measurement Algorithm
In response to the difficulty in determining the characteristics of users and data for mobile terminal access,which leads to high difficulty in access control,an access control technology based on EVM(Error Vector Magnitud)measurement algorithm is proposed to effectively solve the problem.Considering the impact of noise and other interference factors in the environment,the Qos(Quality of Srvice)condition is used as the initial access condition for users.The characteristics of users or data that meet this condition are calculated,and the feature values are converted into weight factors as reference for access control.The EVM measurement algorithm is used to calculate the difference between the internal and external signals of the terminal channel,and the user weight factor is used to derive the access threshold of the mobile terminal.The increasing and decreasing functions between different user threshold values and control values are solved,and precise control of mobile terminal access is achieved according to the priority order of the functions.The experimental data shows that the proposed method has high access control accuracy,and after control,the terminal transmission delay and blocking rate have been significantly improved,and the data arrival rate has also been significantly improved.
error vector magnitud(EVM)measurement algorithmmobile terminalaccess control technologyquality of service(Qos)conditionsdecreasing function
万方数据
维普
