5G网络高可用特性分析

Analysis of High Availability Characteristics of 5G Network

5G的部分使命是助力面向企业(To Business,To B)应用数字化转型,保障5G网络高可用性是5GTo B应用的关键。本文首先阐述To B行业应用搭载5G网络时对业务可用性的指标要求和必要性;其次从频域角度提出提高业务可用性的方法;最后分别论述分组数据融合协议PDCP(Packet Data Convergence Protocol)。复制、双协议数据单元(Protocol Data Unit,PDU)冗余传输和双用户终端(User Equipment,UE)冗余双活这3种方法的基本原理、外部依赖的产业环境、特性增益,并对比这3种方法的优缺点。

Part of the mission of 5 G is to facilitate the digital transformation of vertical industry-oriented applications To Business(To B),and ensuring high availability of 5 G networks is the key to 5 G To B applications.This paper firstly describes the index requirements and necessity of service availability when To B industry applications are equipped with 5 G networks;secondly,it proposes methods to improve service availability from the perspective of frequency domain;and finally,it discusses Packet Data Convergence Protocol(PDCP) respectively.The basic principles,externally dependent industrial environment,and characteristic gains of the three methods,namely,replication,dual Protocol Data Unit(PDU) redundant transmission,and dual User Equipment(UE) redundant duplexing,are discussed,and the advantages and disadvantages of these three methods are compared.