Wireless 5G Core Network

IP Network Simulation

5G N22 Interface Emulation

MAPS™ 5G-N22 can emulate and test Access and Mobility Management Function (AMF) and Network Slice Selection Function (NSSF) entities in 5G Core Network (5GC) elements via the service-based N22 interface.

  Brochure
MAPS™ 5G N22 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/2 protocol with JavaScript Object Notation (JSON) as the application layer serialization protocol.

MAPS™ 5G N22 interface can emulate Access and Mobility Management Function (AMF) and Network Slice Selection Function (NSSF) via the service-based N22 interface.

Supports the following services:

  • Nnssf_NSSelection
  • Nnssf_NSSAIAvailability

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 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 on-line capture and decode of the signaling in real-time both during tests and as a stand-alone tracer for live systems.

Main Features

  • Emulate NSSF and AMF elements
  • Supports Nnssf_NSSelection (Get service operation) and Nnssf_NSSAIAvailability Service (Update, Subscribe, Unsubscribe, Notify and Delete service operations)
  • 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

N22 Interface (NSSF - AMF)

TS29.531 Release 17

JavaScript Object Notation (JSON)

IETF RFC 8259

HTTP/2

IETF RFC 7231
IETF RFC 7540/RFC 7541

TLS

IETF RFC 8446

TCP

IETF RFC 793

IPv4

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

Use Cases

MAPS™ N22 Configured as AMF to Test NSSF (DUT)

MAPS™ N22 Configured as AMF to Test NSSF (DUT)

MAPS™ N22 Configured as NSSF to Test AMF (DUT)

MAPS™ N22 Configured as NSSF to Test AMF (DUT)

5G N22 Interface Procedures

In 5G N22 interface, MAPS™ acts as either NSSF to test AMF or AMF to test NSSF emulating the Nnssf_NSSelection and Nnssf_NSSAIAvailability Service Operations.

Nnssf_NSSelection Service

Get service operation

Get service operation


Nnssf_NSSAIAvailability Service

Update Service Operation

Update Service Operation

Subscribe Service Operation

Subscribe Service Operation

>Unsubscribe Service Operation

Unsubscribe Service Operation


Notify Service Operation

Notify Service Operation

Delete Service Operation

Delete Service Operation



The below figures depict the Call Generation and Reception of 5G N22 interface between NSSF and AMF.

5G N22 interface Call Generation at AMF Node

5G N22 interface Call Generation at AMF Node

5G N22 interface Call Reception at NSSF Node

5G N22 interface Call Reception at NSSF 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.