CDMA系统一种改进的呼叫接入控制策略

针对CDMA蜂窝系统区间业务不平衡的情况,已有文献提出了基于资源预留的呼叫接入控制策略,但是该策略只考虑了小区内移动台均匀分布的情况,为了使该策略更具有实际意义,文章考虑了小区内移动台分布不均匀的情况,对其进行改进,在改进策略中,区间干扰因子不是一个常数,而是随着实际情况变化的。仿真结果显示,改进后的策略有明显的性能改善。

A Modified Call Admission Control Policy in CDMA System

For CDMA cellular systems with non-uniform traffic distribution among cells,the existing papers have proposed the call admission control policy based on resource reservation,which only consider intra-cell balanced traffic.To make the policy more practical,the paper extends the policy to intra-cell unbalanced traffic environment.In the modified policy,the inter-cell interference factor is not a constant,and it varies with practical situation.Simulation results show that the modified policy can keep better performance.