YD/T 4607-2023
5G network slicing communication service management function (CSMF) and network slicing management function (NSMF) interface technical requirements (English Version)

Standard No.

YD/T 4607-2023

Language

Chinese, Available in English version

Release Date

2023

Published By

Professional Standard - Post and Telecommunication  CN  /  YD

Latest

YD/T 4607-2023

Introduction

Analysis of Standard Core Content

Functional Modules	Number of Interfaces	Protocol Requirements	Typical Application Scenarios
Authentication Management	2 Bidirectional Interfaces	HTTPS+Token	Cross-domain Service Call Authentication
Business Lifecycle Management	8 Core Interfaces	RESTful JSON	Slice Activation/Change/Termination

Key Technical Features

1. Hierarchical authentication system

The standard adopts a two-factor authentication mechanism: CSMF-NSMF and NSMF-CSMF both bidirectional authentication interfaces support:

• Password-based OAuth2.0 authentication process
• Dynamic Token mechanism (default validity period is 30 minutes)
• 401/403 status code hierarchical authentication failure processing

2. Full life cycle management

The business management interface supports four core scenarios:

1. Resource exploration (exploreResource)
2. Business creation (createBusiness)
3. Business change (modifyBusiness)
4. Business termination (terminateBusiness)

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Implementation suggestions

1. Key points of protocol implementation

Parameter type	Constraints	Typical example
Timestamp	UTC+8 time zone	2023-07-20 14:30:00
Slice type	Enumeration value 1-4	1:eMBB, 2:URLLC

2. Exception handling mechanism

Pay special attention to the following status code processing:

• 202 ACCEPTED: The work order has been received but not completed
• 422 UNPROCESSABLE ENTITY: semantic verification failed
• 429 TOO MANY REQUESTS: interface flow control triggered

Standard Evolution Analysis

As the 7th part of the 5G slicing series of standards, this standard, together with interface standards such as NSMF-NSSMF, constitutes a complete end-to-end slicing management system. The key technology evolution is reflected in:

1. From static resource configuration to dynamic lifecycle management
2. From single domain management to cross-domain collaboration (CSMF-NSMF-NSSMF)
3. Added support for enterprise private network needs such as DNN tunnel management