关键词: 异构网络, 呼叫接纳控制, 连续时间Markov, 策略优化

Abstract: 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.

Key words: heterogeneous network, call admission control, continuous time Markov, strategy optimization