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TechSpec
  • Foreword
  • 1 Scope
  • 2 References
  • 3 Definitions of terms, symbols and abbreviations
  • 4 Overview
  • 5 Services offered by the HSS
    • 5.1 Introduction
    • 5.2 Nhss_imsUEContextManagement Service
    • 5.3 Nhss_imsSubscriberDataManagement Service
      • 5.3.1 Service Description
      • 5.3.2 Service Operations
    • 5.4 Nhss_imsUEAuthentication Service
    • 5.5 Nhss_gbaSubscriberDataManagement Service
    • 5.6 Nhss_gbaUEAuthentication Service
  • 6 API Definitions
    • 6.1 Nhss_imsUEContextManagement Service API
    • 6.2 Nhss_imsSubscriberDataManagement Service API
      • 6.2.1 API URI
      • 6.2.2 Usage of HTTP
      • 6.2.3 Resources
      • 6.2.5 Notifications
      • 6.2.6 Data Model
      • 6.2.7 Error Handling
      • 6.2.8 Feature negotiation
      • 6.2.9 Security
    • 6.3 Nhss_imsUEAuthentication Service API
    • 6.4 Nhss_gbaSubscriberDataManagement Service API
    • 6.5 Nhss_gbaUEAuthentication Service API
  • A.1 General
  • A.2 Nhss_imsUECM API
  • A.3 Nhss_imsSDM API
  • A.4 Nhss_imsUEAU API
  • A.5 Nhss_gbaSDM API
  • A.6 Nhss_gbaUEAU API
  • B.1 General

4 Overview

29.5623GPP5G SystemHome Subscriber Server (HSS) servicesRelease 18Stage 3TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

4.1 Introduction

Within the 5GC, the HSS offers services to the S-CSCF, I-CSCF, IMS-AS (on the IP Multimedia Subsystem) and GBA BSF via the Nhss service based interface (see 3GPP TS 23.501 [2] and 3GPP TS 23.502 [3]).

Figure 4.1-1 provides the reference model in service-based interface representation with focus on the HSS.

Figure 4.1-1: Reference model – HSS