Abstract: In view of the characteristics of traditional wireless access network decoupling and virtualizing in M-CORD architecture, the dynamic radio resource allocation and optimization are studied with the supporting of the centralized control and global monitoring of SDN（Software Defined Network）. The computing resources of the datacenter are considered as one of the factors affecting resource allocation. Taking the interference threshold, front-haul capacity constraints, user mobility, minimum resource rate guarantee and computing resource constraints into account, the resource allocation formula of the wireless access network under the M-CORD architecture is deduced. And the suboptimal solution of resource allocation is found by improving the increment-based greedy allocation algorithm. Through simulations and evaluations, it is proved that the improved algorithm can effectively realize the wireless access network resource allocation in M-CORD architecture.

Key words: M-CORD, Radio Access Network（RAN）, resource allocation, interference control

摘要： 针对M-CORD架构将传统的无线接入网络解耦并虚拟化的特征，考虑软件定义网络（SDN）的集中控制和全局监测作用，研究无线接入网侧资源的动态分配及优化问题。将数据中心的计算资源纳为资源分配考虑因素之一，综合干扰阈值、前传网络容量限制、用户移动性、服务最低资源保障以及计算资源限制五方面，推导出M-CORD架构下无线接入网资源分配公式，通过改进基于增量的贪心分配算法，求得资源分配的次优解。仿真结果验证了改进算法在M-CORD架构下对无线接入网资源分配的适用性。

关键词: M-CORD, 无线接入网络（RAN）, 资源分配, 干扰控制