Wireless 5G Core Network

IP Network Simulation

5G N8 Interface Emulation

MAPS™ 5G-N8 can emulate and test Unified Data Management (UDM) and Access and Mobility Management Function (AMF) elements via the Nudm and Namf service-based N8 interface.

  Brochure
MAPS™ 5G N8 Interface Simulation

Overview

MAPS™ 5G N8 interface can emulate Unified Data Management (UDM), within the 5G Core Network offering services to Access and Mobility Management Function (AMF) via the Nudm service-based N8 interface.

MAPS™ N8 Interface Emulator supported Procedures are -

  • Nudm_SubscriberDataManagement : Get, Subscribe, Modify Subscription, Unsubscribe and Notification operations
  • Nudm_UEContextManagement: Registration, Deregistration Notification, Deregistration, Get and Update operations
  • Namf_MT: Provides Domain Selection Info operation
  • Namf_Location: Provide Location Info operation
  • Namf_Communication: AMF Status Change Operations

GL has enhanced its MAPS™ protocol emulation tool to emulate multi-protocol and multi-interface offering a complete range of test solutions, covering the entire 2G, 3G, 4G, and 5G network.

By mimicking real-world customer behavior in lab environments, our solutions allow mobile operators and equipment manufacturers to verify their 5G networks before deployment.

GL also provides a GUI based Multi-Protocol Analyzer for online capture and decode of the signaling in real-time both during tests and as a stand-alone tracer for live systems.

GL's Message Automation & Protocol Simulation (MAPS™) 5G System as a service-based architecture, includes a set of Network Functions (NFs) providing services as defined in 3GPP standards. The service-based interfaces use HTTP/2 protocol with JavaScript Object Notation (JSON) as the application layer serialization protocol.

Main Features

  • Emulates AMF and UDM elements
  • Supported procedures are -
    • Nudm_SubscriberDataManagement
    • Nudm_UEContextManagement
  • Services use REST APIs based on HTTP and JSON data format
  • Supports TLS and TCP transports
  • Supports scripted call generation and automated call reception
  • Supports customization of call flow and message templates using Script Editor and JSON Messages
  • Ready-to-use scripts for quick testing
  • Provides Call Statistics and Events Status
  • Emulates Multiple Subscribers using CSV Profiles
  • Automation, Remote access, and Schedulers to run tests 24/7

Supported Protocols Standards

Protocols Standards

Protocols Standards

Supported Protocols
Standard / Specification

N8 Interface (UDM - AMF)

TS29.503 Release 15

JavaScript Object Notation (JSON)

IETF RFC 8259

HTTP
HTTP/2

IETF RFC 7231
IETF RFC 7540/RFC 7541

TLS

IETF RFC 8446

TCP

IETF RFC 793

IPv4

IETF RFC 791
IETF RFC 2460

Use Cases

MAPS™ N8 configured as AMF to test UDM (DUT)

MAPS™ N8 configured as AMF to test UDM (DUT)

MAPS™ N8 configured as UDM to test AMF (DUT)

MAPS™ N8 configured as UDM to test AMF (DUT)

5G N8 Interface Procedure

In the 5G N8 interface, MAPS™ acts as either AMF to test UDM or UDM to test AMF emulating the following procedures.

MAPS™ N8 Interface Emulator supported Procedures are - Nudm_SubscriberDataManagement Services, Nudm_UEContextManagement Services, Namf_MT Service , Namf_Location Service, Namf_Communication

Nudm_UEContextManagement Service

AMF registration for 3GPP Access

AMF registration for 3GPP Access

AMF de-registration for 3GPP Access

AMF de-registration for 3GPP Access

UDM Initiated NF Deregistration

UDM Initiated NF Deregistration


Nudm_SubscriberDataManagement Service

Slice Selection Subscription Data Retrieval

Slice Selection Subscription Data Retrieval

Access and Mobility Subscription Data Retrieval

Access and Mobility Subscription Data Retrieval

SMF Selection Subscription Data Retrieval

SMF Selection Subscription Data Retrieval


Nudm_SubscriberDataManagement Service

SMS Subscription Data Retrieval

SMS Subscription Data Retrieval

Retrieval of Multiple Data Sets

Retrieval of Multiple Data Sets



The below figures depict the Call Generation and Reception of 5G N8 interface between AMF and UDM.

5G N8 interface Call Generation at AMF Node

5G N8 interface Call Generation at AMF Node

5G N8 interface Call Reception at UDM Node

5G N8 interface Call Reception at UDM Node

Resources

Please Note: The XX in the Item No. refers to the hardware platform, listed at the bottom of the Buyer's Guide, which the software will be running on. Therefore, XX can either be ETA or EEA (Octal/Quad Boards), PTA or PEA (tProbe Units), UTA or UEA (USB Units), HUT or HUE (Universal Cards), and HDT or HDE (HD cards) depending upon the hardware.