本文首先提出了基于接收信干比的局部和全局算法，在次基础上提出了一种自适应接纳门限算法，其基本出发点是在保证系统中断性能的前提下，尽可能降低系统阻塞概率，充分利用系统容量资源。-This paper proposes received signal to interference ratio based on the local and global algorithms, based on the second admission, an adaptive threshold algorithm, the basic starting point is to interrupt the performance to ensure that the system under the premise of the system blocking probability as low as possible, fully system capacity utilization of resources.