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