中文摘要：

第三代移动通信系统TD—SCDMA是一种自干扰的系统，随着未来用户的增多，无线资源相对有限的情况下，有效控制干扰的要求越来越高，而呼叫接纳控制技术就是解决这一问题的关键技术之一。对传统的接纳控制算法进行研究，提出了基于实测功率的上行接纳控制算法，并计算出接入判决的门限值，以实现用户接入系统后对QoS的保证。实验表明该算法相对于传统的算法而言，判决精度更高，并且具有门限自适应的优势。

英文摘要：

TD-SCDMA is a self- interference system. As users increasing,a better control of interference is required in this relatively finite cellular network. The Call Admission Control（CAC） is one of the key techniques for solving these problems. Based on the research of traditional CAC arithmetic,it proposes a new uplink CAC arithmetic based on real measure power in this work, and calculates threshold value, which assures the QoS demends when users access network. It shows this arithmetic is more precision than traditional arithmetic,and predominance in self- adapt threshold.