中图分类号： TN929.5 文献标识码： A DOI：10.16157/j.issn.0258-7998.201010 中文引用格式： 夏旭. 5G网络切片服务等级协议技术增强和应用研究[J].电子技术应用，2020，46(11)：36-40，44. 英文引用格式： Xia Xu. 5G network slicing SLA enhancement and scenarios[J]. Application of Electronic Technique，2020，46(11)：36-40，44.
5G network slicing SLA enhancement and scenarios
Xia Xu
China Telecom Research Institute，Beijing 102209，China
Abstract： With the advancement of 5G network construction and service development, especially the development of network slicing towards convergence, diversification and intelligence in vertical industry-oriented application scenarios, new requirements are placed on the service functions of 5G network slicing. In order to adapt to the business needs of the 5G era, create 5G differentiated SLA advantages, and fully leverage the value of operators in the 5G era, this paper presents technical research and capability validation on 5G network slicing, service level guarantees and application practices. At the same time, based on the progress of 5G Stand Alone(SA) standards, key network slicing technologies were discussed, 5G business forms were refined, and new business models were simultaneously explored, providing technical optimization and support for the full-scale commercial implementation of 5G SA.
5G场景和需求多种多样，不同的场景对网络的性能、功能有不同的需求。在前几代的以人为中心的的网络基础上，无法进行优化和融合，该网络已经无法满足5G多种多样的需求，部分优化和需求在不同的场景之间可能还存在矛盾。例如超可靠低延时业务(Ultra Reliable and Low Latency Communication，URLLC)需要提供超实时高可靠服务，大规模机器通信场景(massive Internet of Things，mMTC)则要求海量的连接数，但是数据量比较小，增强宽带通信场景(enhanced Mobile BroadBand，eMBB)则要求超高带宽、大数据的服务。而如果为了满足每一种场景都增加建设相应的专用网络，将会增加建网和运营的成本，造成不必要的资源浪费。
