基于Markov链重复请求的LTE网络需求响应分析  

Demand Response Analysis of LTE Network for Repeated Requests Based on Markov Chain

作　　者：刘鸿飞[1] LIU Hong-fei(Chongqing Industrial Robot Application Service Engineering Technology Research Center,Chongqing Creation Vocational College,Chongqing 402160,China)

机构地区：[1]重庆科创职业学院重庆市工业机器人应用服务工程技术研究中心,重庆402160

出　　处：《控制工程》2022年第8期1364-1369,共6页Control Engineering of China

基　　金：重庆市教委科学技术研究项目(KJZD-K201805401,KJQN202005404);重庆市永川区自然科学基金资助项目(Ycstc 2020nb0504)。

摘　　要：长期演进(LTE)网络可用于为智能网络提供需求响应流量。针对网络中区域LTE基站失效问题,提出一种需求响应模型。该模型采用自组网方式,通过多个远程终端控制系统构建集群。每个集群选择一个终端作为集群头,集群头承担网关任务,负责与其他集群通信,以确保在某些区域LTE基站失效情况下通信的可靠性。通过建立Markov链分析模型,对设备到设备通信的详细物理层传播过程、时域中静态资源分配、混合自动重复请求重传,以及用户设备接收上行链路数据传输过程进行分析。仿真结果表明,该需求响应模型具有较高的数据包传输成功率和较低的平均网络延迟,可支持大多数智能网络的灾难恢复应用。Long term evolution(LTE) network can be used to provide demand response traffic for intelligent networks.Aiming at the failure of regional LTE base stations in the network,a demand response model is proposed in this paper.The mode of ad hoc network is adopted in this model and clusters are constructed through multiple remote terminal unit control systems.Each cluster selects a terminal unit as the cluster head to undertake the gateway task and be responsible for communicating with other clusters to ensure the reliability of communication in case of failure of LTE base stations in some regions.The detailed physical layer propagation of device-to-device communication,static resource allocation in time domain,hybrid automatic repeated request retransmission and receiving uplink data transmission of user equipment are analyzed by establishing analysis models based on Markov chain.The simulation results show that the demand response model has high success rate of data packet transmission and low average network delay,which is sufficient to support most disaster recovery applications of intelligent networks.

关 键 词：重复请求 MARKOV链 LTE网络 智能设备 需求响应 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]