How to Create a Network Slice? - A 5G Core Network Perspective

Wangbong Lee, Taeheum Na, Jeongyun Kim
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引用次数: 19

Abstract

Initially, the 5G system architecture is required with very diverse and extreme requirements. These requirements related with four main mega trends. Those are the explosion of date traffic, the rapid increase of number of devices, the increase of cloud’s dependency, and the advent of new various mobile converged services. Mobile business stake holders define three categories of services and their characteristics such as eMBB (enhanced Mobile Broadband), mMTC (massive Machine Type Communications) and URLLC (Ultra-Reliable and Low Latency Communications). To support these services, KPIs (Key Performance Index) such as user experience data rate, peak data rate, mobility, latency, connection density, energy efficiency, spectrum efficiency, and traffic volume density are elicited. With these KPIs and service scenarios, 3gpp working groups has been studied requirements, standards, and use cases for the 5G system. To support these 5G’s requirements, a network slicing technology is required. Network Slicing provides multiple logical networks on top of a partially shared network infrastructure. Each instance of a network slice represents an independent end-to-end network that allows deployment of different architectural flavours in parallel slices. This paper proposes an architecture for the network slicing in 5G communication system.
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如何创建网络切片?——5G核心网视角
最初,5G系统架构要求非常多样化和极端。这些要求与四个主要的大趋势有关。数据流量的爆炸式增长,设备数量的快速增长,对云的依赖性的增加,以及各种新的移动融合服务的出现。移动业务利益相关者定义了三类服务及其特征,如eMBB(增强型移动宽带)、mMTC(大规模机器类型通信)和URLLC(超可靠和低延迟通信)。为了支持这些业务,需要kpi(关键性能指标),如用户体验数据速率、峰值数据速率、移动性、延迟、连接密度、能效、频谱效率和流量密度。通过这些kpi和服务场景,3gpp工作组已经研究了5G系统的需求、标准和用例。为了支持5G的这些要求,需要一种网络切片技术。网络切片在部分共享的网络基础设施之上提供多个逻辑网络。网络切片的每个实例表示一个独立的端到端网络,允许在并行切片中部署不同的体系结构风格。提出了一种5G通信系统中网络切片的架构。
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