呼叫允许控制是无线资源管理中的重要组成部分,是一种减少网络拥塞、保证服务质量和提高网络资源利用率的重要机制.在给定系统资源情况下,准确估计用户呼叫延迟阻塞概率,能为网络优化建设提供一个重要依据.在排队论--生灭过程的基础上,探讨了感知无线电(CR)网络中的呼叫延迟阻塞概率与系统资源的关系,并给出了估计公式,仿真结果表明其精确度很高.%Call admission control is a very important technology in wireless resource management, and it is one of the key schemes to decrease congestion, guarantee QoS and improve resource utilization.System resources in a given case, an accurate estimate of the user call blocking probability could provide an important basis for the network to be optimized building.This research based on queuing theory-birth and death process, explored the relationship between the probability of call blocking delay in CR networks and system resources.At the same time, gave an estimated formula.Simulation results show that it has a high degree of precision.
展开▼
