LTE无线网络虚拟化中切片调度策略

发布时间：2018-11-12 16:17

【摘要】：研究了未来移动通信网络切片机制,针对LTE系统下行在基站内建立媒体接入控制(MAC)层流级别的切片调度器,使得运营商之间可以按照预设比例共享资源。运营商作为切片的拥有者可以根据不同的服务等级协议(SLA)来对其资源比例进行设定。比较固定切片与网络虚拟化基片(NVS)框架下切片的资源块利用率,进行了系统级仿真实验。相对于固定切片方法,NVS方法在不同切片间用户相互隔离的情况下有更好的资源利用率。此外,针对实时(RT)业务和非实时(NRT)业务在时延上的差异建立业务切片,定制化地选择其调度算法策略,从而在降低分组丢失率的同时提升整个系统的性能。
[Abstract]:In this paper, the slicing mechanism of future mobile communication networks is studied, and a slicing scheduler with (MAC) laminar level for media access control in the base station is established for the downlink of LTE system, so that the resource can be shared among operators according to the preset scale. Operators as the owner of slices can set their resource ratios according to different service level protocols (SLA). A system-level simulation experiment was carried out to compare the resource block utilization between fixed slice and network virtualization substrate (NVS) framework. Compared with the fixed slice method, the NVS method has better resource utilization when the users are isolated from each other. In addition, in order to reduce the packet loss rate and improve the performance of the whole system, a service slice is established for the delay difference between real-time (RT) services and non-real-time (NRT) services, and its scheduling algorithm is selected customarily.
【作者单位】：河北工业大学;中国科学院计算技术研究所;中国科学院大学;
【基金】：国家自然科学基金资助项目(No.61431001)~~
【分类号】：TN929.5

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