多业务异构网络的呼叫接纳控制

摘要

呼叫接纳控制作为异构网络系统资源管理的重要部分,直接影响整个网络资源使用的有效性,因此在异构网络环境下设计一个合理有效的接纳控制策略至关重要.考虑了异构网络中的呼叫接入问题,根据各类服务的带宽需求以及提供的利润差异,针对其随机分布的特性,建立连续时间Markov分析模型,提出一种基于缓存的呼叫接入控制算法,并采取迭代策略对算法进行优化.仿真实验验证了算法的有效性,最终的控制策略是系统长期平均利润最大化的最优策略.%Call admission control,as an important part of resource management of heterogeneous network system,directly affects the effectiveness of the whole network resource usage.Therefore,it is very important to design a reasonable and effective admission control strategy in heterogeneous network environment.The call access problem in heterogeneous networks is considered.According to the bandwidth requirement of various services and the different profits they provide,a continuous time Markov analysis model for the random distribution of the call is constructed.A cache-based call access control algorithm is proposed and the iterative strategy is used to optimize the algorithm.The simulation results verify the effectiveness of the algorithm.The final control strategy is the optimal strategy for making the largest long-term system average profit.