Wireless 5G Core Network

IP Network Simulation

5G N51 Interface Emulation

MAPS™ 5G-N51 can emulate and test Access and Mobility Management Function (AMF) and Network Exposure Function (NEF) entities in 5G Core Network (5GC) elements via the service-based N51 interface.

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MAPS™ 5G N51 Interface Emulation

Overview

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 protocol with JavaScript Object Notation (JSON) as the application layer serialization protocol.

MAPS™ 5G N51 interface can emulate Access and Mobility Management Function (AMF) and Network Exposure Function (NEF) via the service-based N51 interface. MAPS™ N51 Interface Emulator supports Namf_EventExposure service procedure.

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 5G, 4G, 3G, and 2G networks.

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.

Main Features

  • Emulate AMF and NEF elements
  • Supports Namf_EventExposure Service (Registration State Change Event, Connection State Change Event, Location Report Event, Presence In Area of Interest Event)
  • 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
  • Ready-to-use scripts for quick testing
  • Provides Call Statistics and Events Status
  • Automation, Remote access, and Schedulers to run tests 24/7

Supported Protocols Standards

Protocols Standards

Protocols Standards

Supported Protocols
Standard / Specification

N51 Interface (NEF - AMF)

TS29.518

JavaScript Object Notation (JSON)

IETF RFC 8259

HTTP/2

IETF RFC 7540

TCP/TLS

IETF RFC 793

IPv4

IETF RFC 791 [5]
IETF RFC 2460 [6]

Use Cases

MAPS™ N51 Configured as AMF to Test NEF (DUT)

MAPS™ N51 Configured as AMF to Test NEF (DUT)

MAPS™ N51 Configured as NEF to Test AMF (DUT)

MAPS™ N51 Configured as NEF to Test AMF (DUT)

5G N51 Interface Procedures

In 5G N51 interface, MAPS™ acts as either NEF to test AMF or AMF to test NEF emulating the Namf_EventExposure Service Operations.

Namf_EventExposure Service

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Supports the following event functions

  • Registration State Change Event
  • Connection State Change Event
  • Location Report Event
  • Presence In Area of Interest Event
Registration State Change Event

Registration State Change Event



The below screenshots depict the Call Generation and Reception of 5G N51 interface between NEF and AMF.

5G N51 interface Call Generation at NEF Node

5G N51 interface Call Generation at NEF Node

5G N51 interface Call Reception at AMF Node

5G N51 interface Call Reception at AMF 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.