摘要
在高速发展的移动业务和频谱资源受限的环境下,传统的无线接入网架构面临着诸多挑战:系统容量干扰受限、多标准和动态网络负载缺乏灵活性以及高额的建设和运维成本等。为了应对这些挑战,下一代无线接入网在空口逐渐向协作化方向发展,基站之间以协作的方式进行无线资源优化配置来提高空口的频谱效率;此外,通过将基带资源集中化,利用基带资源虚拟化等技术手段,可以极大地提升基站设备效率,降低系统能耗,同时更有效地利用站址资源,满足低成本建设与维护网络的要求。
With the trend of surging mobile traffic and limited spectrum resource,traditional radio access network is facing lots of challenges,which are system capacity limited by interference,inflexibility of multi-standard and dynamic workload,high CAPEXOPEX.In order to handle these challenges,the future architecture of radio access network will be developed in a cooperative style at air interface.In this architecture,each base station cooperatively optimizes the radio resource allocation and improves the spectral efficiency.In addition,the base-band pool technology can reduce the CAPEXOPEX of RAN and improve the efficiency of resource utilization greatly through utilizing baseband virtualization technology.
出处
《电信科学》
北大核心
2011年第1期76-82,共7页
Telecommunications Science
