LTE-A/WLAN中基于马尔可夫过程的接入选择算法研究

An Access Selection Algorithm Based on Markov Process for LTE-A/WLAN Heterogeneous Network

在LTE-A/WLAN融合的异构网络中,为了随时随地为用户提供最好的连接,文中提出了一种基于马尔可夫过程的接入选择算法。当不同业务类型的用户到达这两个网络重叠覆盖的区域时,该算法根据当前各接入网的网络状态和用户业务类型做出相应的接纳控制决策,包括是否接纳该用户以及接纳到何种网络,通过仿真和采用马尔可夫过程分析该异构网络的系统性能,证明了该算法能够有效提高该异构网络系统的吞吐量,降低阻塞概率,改善异构网络中无线资源的利用率。

An access selection algorithm based on Markov process is proposed to provide users with the best connection anytime and anywhere in LTE-A/WLAN Heterogeneous Network. When different types of services arrived at the overlay area of these two networks, the algorithm will make a corresponding decision based on network states and service type, including whether to it will be accepted and which network it access. Also and analyze the performances of the heterogeneous network are analyzed by the proposed model. Simulation results show that the proposed algorithm can effectively enhance the throughput of the heterogeneous network, decrease the total blocking probability and improve the resource utilization.