能耗和时延感知的虚拟化云无线接入网络资源分配机制

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%。

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

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.