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GB/T 44884-2024Technical requirements for secure user plane location service—Platform (English PDF)

基于用户面的定位业务技术要求平台

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

November 28, 2024

Implementation date

March 1, 2025

Scope

GB/T 44884-2024 is the English-translated version of 基于用户面的定位业务技术要求平台.

GB/T 44884-2024 is the Chinese national standard covering the platform that locates a handset over the data channel rather than the signalling channel — the architecture that splits the SLC from the SPC, the communication modes and function groups, the network-originated and SET-originated call flows, the security policy, the ULP version negotiation, and the carriage of ULP over TCP/IP, SIP PUSH, OMA PUSH and MT SMS, which decides how a sleeping terminal is woken for a location request. A network-originated request locates a terminal that never asked to be located, which is what the security policy in Clause 8 is there for. First edition, under the Ministry of Industry and Information Technology. In force from 1 March 2025. Issued on 28 November 2024, it has been in force since 1 March 2025.

Document preview — GB/T 44884-2024

National Standard of the People's Republic of China

ICS: 33.030
Classification: M 30

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface... III 1 Scope1
2 Normative references1
3 Terms and Definitions1
4 Abbreviations1
5 Architecture, business and logical functions3
5.1 System Architecture3
5.2 Communication Mode6
5.3 Business Support7
5.4 Location Service Function Group7
5.5 Positioning Function Group9
6 Functional requirements10
7 Business Process11
7.1 Network-originated positioning11
7.2 SET-originated positioning11
8 Security Strategy11
9 ULP Version Negotiation11
10 ULP protocol and interface12
10.1 Basic Requirements12
10.2 TCP/IP and UDP/IP12
10.3 SIP PUSH12
10.4 OMA PUSH12
10.5 MT SMS12
10.6 SET Preset12
10.7 Lup reference point13
11 ILP Protocol and Interface14
11.1 Basic Requirements14
11.2 TCP/IP14
11.3 Llp reference point14
References16

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting is required.

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document was proposed by the Ministry of Industry and Information Technology of the People's Republic of China.

This document is under the jurisdiction of the National Communications Standardization Technical Committee (SAC/TC 485).

This document was drafted by: China Academy of Information and Communications Technology, China Unicom Group Co., Ltd., ZTE Corporation Co., Ltd., Qualcomm Wireless Communications Technologies (China) Co., Ltd., and China Information and Communications Technology Group Co., Ltd.

The main drafters of this document are: Liu Shuo, Li Xiayu, Xin Wei, Liu Haijiao, Wan Yi, Ge Zhiyong, Zhang He, Qiu Jianshu, Dong Hao, Du Zhimin, Quan Haiyang, Li Jianxiang, Wan Jun, Yang Yiming, Zhang Hong, Liu Xu, Xu Bingyu, Ma Yujuan, Li Sidong.

Technical requirements platform for positioning services based on user plane

1 Scope

This document specifies the technical requirements of the user-plane-based positioning service platform, including the platform's system architecture, functional requirements, and service flow.

procedures, security policies, and related protocol interface requirements.

This document is applicable to the design, development and testing of positioning service platforms based on mobile communication networks.

2 Normative references

This document has no normative references.

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 emergency IMS core

IMS core network supporting emergency IMS calls.

3.2 non-proxy mode

A mode in which the SPC system and SET can communicate directly.

3.3 proxy mode

The SPC system and SET are not in direct communication mode.

NOTE. In this case, the SLC system performs a proxy role between the SET and the SPC.

3.4 SET initiated

Service initiated by SET.

NOTE. For these services, the SUPL Agent is located on the SET.

3.5 network initiated

In contrast to SET originated, network originated is a service initiated from within the SUPL network.

NOTE. For these services, the SUPL Agent is located within the network.

3.6 User plane positioning service platform SUPL Location Platform; SLP

A platform consisting of SPC and SLC.

4 Abbreviations

The following abbreviations apply to this document.

AFLT. Advanced Forward Link Trilateration ASN.1.Abstract Syntax Notation One

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 20 pages — is available in the English PDF.

Editions of GB/T 44884

Edition	Title	Revision	Status
GB/T 44884-2024	Technical requirements for secure user plane location service - Platform	current edition	Current

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