基于超级基站的集中式接入网络架构的物理层虚拟化方法

A physical layer virtualization method for super base station based centralized radio access networks

针对集中式接入网络基带物理层计算资源异构性、基带算法模块间依赖性和物理层通信协议的实时性的存在而导致传统虚拟化技术不再适用的问题,在中科院计算所的超级基站的架构基础上,按照TD-LTE协议提出了一种基于单元级和系统级的二层资源调度策略,从而达到物理层计算资源虚拟化和实现虚拟基站的负载均衡和负载聚合的目的。仿真结果显示,这种实现物理层虚拟化的资源调度策略能够为集中式接入网络的物理层带来1.6的资源复用增益和3.725的功率复用增益。本研究能够为集中式接入网物理层计算资源池虚拟化的实现提供参考。

Conisidering that conventional virtualization techniques do not apply to a centralized radio access network due to the existence of the computing resource heterogeneity in baseband＇ s physical layer, the dependency of baseband＇ s algorithm modules, and the real-time ability of the communication protocol in the phyieal layer, a two-layer resource allocation strategy based on the unit level and the system level was presented on the basis of the super base station architecture given by the Institute of Computing Technology of Chinese Adacemy of Sciences according to the TD （time division）-LTE （long term evolution） protocol to achieve the computing resource virtualization in the physical layer and realize the load balance and load consolidation of virtual base stations. The simulation illustrated that the proposed method worked well, bringing a resource multiplexing gain of 1.6 and an energy multiplexing gain of 3. 725 to the physical layer of the centralized radio access network. This study is of referential significance to realization of the virtualization of computing resource pools of centralized radio access networks.