能耗和时延感知的虚拟化云无线接入网络资源分配机制  

Energy Consumption and Delay-aware Resource Allocation Mechanism for Virtualization Cloud Radio Access Network

作　　者：王汝言[1,2] 徐宁宁 吴大鹏 WANG Ruyan;XU Ningning;WU Dapeng(School of Telecommunication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;Optical Communication and Network Key Laboratory of Chongqing,Chongqing 400065,China)

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065 [2]重庆高校市级光通信与网络重点实验室,重庆400065

出　　处：《电子与信息学报》2019年第1期83-90,共8页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(61371097;61771082);重庆市高校创新团队建设计划(CXTDX201601020)~~

摘　　要：针对现有虚拟化云无线接入网络(C-RAN)资源利用率低、能耗高、用户服务质量无法得到保证等问题,该文提出一种能耗和时延感知的虚拟化资源分配机制。根据虚拟化C-RAN的网络特点及业务流量特征,考虑资源约束和比例公平,建立能耗和时延优化模型。进而,利用启发式算法为不同类型虚拟C-RAN和用户虚拟基站分配资源,完成资源的全局优化配置。仿真结果表明,所提资源分配机制在提高网络资源利用率的同时,不但使能耗节省了62.99%,还使时延降低了32.32%。To solve the problems of low resource utilization rate,high energy consumption and poor user service quality in the existing virtualized Cloud Radio Access Network(C-RAN),a virtual resource allocation mechanism based on energy consumption and delay is proposed.According to the network and traffic characteristics of the virtualized C-RAN,considering the resource constraints and proportional fairness,an energy consumption and delay optimization model is established.Furthermore,a heuristic algorithm is used to allocate resources for different types of virtual C-RAN and user virtual base stations to complete resource global optimization configuration.Simulation results show that the proposed resource allocation mechanism can effectively save energy by 62.99%and reduce the latency by 32.32%while improving the network resource utilization.

关 键 词：云无线接入网 网络虚拟化 时波分复用无源光网络 资源分配 

分 类 号：TP393.04[自动化与计算机技术—计算机应用技术]