CDMA系统中考虑相邻小区干扰基于QoS的CAC算法

A QoS-based CAC Scheme Considering the Interference of the Neighboring Cells

CDMA网络用户的数量日益增加,无线资源相对有限,用户对服务质量的要求也越来越高,呼叫接纳控制是解决这系列问题的关键技术之一。该文提出了基于QoS(服务质量)考虑相邻小区干扰的呼叫接纳控制算法,以高斯模型引入相邻小区的干扰,以不同业务的中断概率要求为判决门限来实现对于不同业务的QoS的保证。可以看到该算法对于系统干扰源的考虑更加全面,更加符合实际的网络环境;同时也满足了无线用户日益提高的QoS要求,这无疑是移动通信服务更加人性化的一种体现。

The quantity of the users increased rapidly and a better quality of service(QoS) is required in this relatively finite CDMA celluar network.The call admission control(CAC) is one of the key techniques for solving these problems.In this work,a CAC Scheme has been proposed as QoS-based CAC scheme considering the interference of the neighboring cells, which introduced the interference of the neighboring cells in a gauss model and took the call outage probabilities of every services as the threshold to ensure the different QoS demands. In this CAC scheme, the consideration of the interference sources in the system was more complete so that it can accord with the actual net surroundings and the users' improving QoS demands can be satisfied as well, which just shows the humanization of the services in wireless network.