支持机器类型通信的动态接入拦截方法  

Dynamic access barring scheme for machine type communications

作　　者：胡茂智 唐伦[1] 

机构地区：[1]重庆邮电大学移动通信重点实验室,重庆400065

出　　处：《计算机工程与设计》2014年第11期3776-3781,共6页Computer Engineering and Design

基　　金：重庆市自然科学基金计划项目(cstc2012jjA1535)

摘　　要：对提升机器到机器(M2M)通信的接入成功率进行研究,在分组接入拦截(ACB)方案的基础上,提出一种加入自适应调整机制的改进方法。应用近似最大后验概率(AMAP)算法对等待接入的机器设备(MDs)数做出比较准确的估计,基于这种估计动态地调整ACB拦截参数,强化对负载和接入尝试的控制,提升对先导序列资源的利用率和接入成功率。仿真结果表明该方法可行有效。To promote the access success ratio of machine-to-machine （M2M） communications, a self-adaptive mechanism based on the access class barring （ACB） scheme was proposed. The ACB parameters were updated dynamically to effectively control the access overload and the congestion was singled by using the approximate MAP algorithm to estimate the number of machine devices waiting to access. The performance of the proposed solution was evaluated using computer simulations. The obtained re- sults show that the proposed solution can effectively promote the preamble resource utilization and the access success ratio.

关 键 词：高级长期演进 机器到机器通信 无线接入 动态 分组接入拦截 

分 类 号：TN915.6[电子电信—通信与信息系统]