蜂窝物联网核心网目标架构演进探讨

doi:10.11959/j.issn.1000-0801.2023007

Abstract

Abstract:

At present, there are two Internet of things networks facing 2G, 4G, NB-IoT and facing toB core networks.In order to simplify the network, enhance the capability, enhance the benefit, and facilitate the operation and maintenance, it is necessary to define the target architecture of 5G-oriented Internet of things core network.Based on the existing network problems and combined with the driving force of network evolution, the network evolution target structure, evolution strategy and service solution were analyzed and discussed.It provides a reference for operators to plan and construct the Internet of things.

Key words: 5G, cellular Internet of things, core network, toB

CLC Number:

TP393

Hongyuan MA, Wei ZHOU, Yan FU, Yongping SHAO, Dan LI. Discussion on the evolution of architecture of the core network of cellular Internet of things[J]. Telecommunications Science, 2023, 39(1): 153-161.

Figures/Tables 5

类型	思路1（融合组网）		思路2（独立组网）
类型	思路1.1（全融合）	思路1.2（部分融合）	思路2（独立组网）
标准情况	企业技术规范已要求2G/4G/5G/NB具备融合能力		现有标准、规范均已支持此场景
产业支持	主要厂商已完成 4G/5G/NB 融合测	现网主要厂商的策略控制功能/统一数据	现有厂商设备均已支持此场景
	试，即将进行2G融合测试	管理功能（policy control function/the
		unified data management，PCF/UDM）已
		支持融合能力
业务影响	对现有业务进行无感知割接	对现有业务无影响	对现有业务无影响
路由组织	与5G toB网络路由组织一致（UPF	4G/5G/NB 不同基站使用不同的接入设	延续使用现网路由组织
	建议使用专线UPF）	备，用户注册和签约使用数据域融合网元
资源利用	高：不同制式共享资源。在	中：数据域网元2G/4G/5G/NB共享，利	低：所有 2G/4G/5G/NB 网元均隔
	2G/4G/5G/NB发展情况不确定时，	用率较高	离，硬件利用率最低
	可以提高资源利用率
规划投资	低：由于资源利用率高，因此硬件	中：数据域网元均2G/4G/5G/NB共享，	高：需要对2G/4G/5G/NB的4张网
	投资和维护成本最低	投资较低	络分别进行建设和维护，会导致硬
			件投资和维护成本较高
施工调整	短：融合网元按需在 5G 网络上扩	中：需要对接入设备分别进行新建或扩	长：对2G/4G/5G/NB的4张网络分
	容即可，工期最短	容。数据域网元按需扩容即可，工期适中	别进行建设，工期较长
容灾影响	4G/NB业务迁移至toB网络，按照	（1）接入设备沿用现网 2G/4G/5G/NB	沿用2G/4G/5G/NB的4张网络的容
	toB网络容灾方式	的容灾方式。	灾方式
		（2）用户迁移至toB数据域网元后，按
		照toB网络容灾方式

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Discussion on the evolution of architecture of the core network of cellular Internet of things

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