HSS Emulator

Emulates the HSS over S6a to the MME
HSS Emulator

Emulates the HSS over S6a to the MME


Valid8's HSS emulator is a software-based solution that mimics a real HSS to test the rest of the core and user equipment

What It Can Do For You

Cost effective solution to turn up eNBs, EPCs and test UEs

Why It’s Different

  • Software based solution can be run on high-end customer hardware/VM to achieve better performance, or in the Cloud (e.g. Amazon AWS) for maximum versatility 
  • Web-based Graphical User Interface provides customer with intuitive, easy access via browser 
  • API’s used (REST, HTTP) enable automated testing using test tools. 
  • Emulated nodes behave exactly as true real nodes, due to Finite State Machine architecture 
  • Testing is scalable across multiple cores and multiple systems


  • Emulates the S6a interface
  • True stateful simulation 
  • Supports authentication and location update and other scenarios
  • Report on messages received, response time, session duration
  • Generate valid and invalid/negative messages and call-scenarios (fully editable scenarios) 
  • Supports sending invalid messages including malformed, dropped, and misordered packets 
  • Check parameters in messages from SUT and flag errors
  • 3GPP-compliant interface
  • Core network 5G ready


  • S6a Authentication Request Response Time 
  • S6a Update Location Request Response Time
Configurable Parameters
  • PLMN Mobile Country Code (MCC), Mobile Network Code (MNC)
  • IMSIs list
  • Integrity Algorithm 
  • APN list
  • K
  • OPC

Automation API

User commands can be fully automated using REST API. This includes performing all test control functions as well as collecting results and metrics.


The application’s subsystems can be edited directly in the browser using Javascript or by using the graphical tools seen below. The Message Workshop allows for creating of test scenarios directly from the hex stream of a remote capture, while the Graphical Editor allows for creating customized call scenarios by dragging and dropping the call flow to meet your test needs.

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Use Cases

eNodeB Under Test

In the scenario where the eNodeB is to be tested, it can be tested by the Valid8 4G Network Emulator emulating the core network. Additionally, load and conformance tests are available for interfaces S1-MME and S1-U. In the case where the eNodeB needs to be tested on the RF side, it can be tested by the Valid8 4G UE Emulator.

Supported Scenarios:
  • ‍Power on / Start up
  • 4 Attach
  • 4 TAU
  • 4 Attach
  • 4 eRAB Setup
  • 4 Detach
  • UE Under 
  • Emulates MME (for S1-MME) and SGW (for S1-U) along with all other needed core network elements, exposing all internal interfaces
  • Conformance tests available for S1-MME, S1-U, and X2

UE Under Test

For testing UE or IoT devices, the 4G Network Emulator can provide the entire 4G core network as well as an emulated or real eNodeB depending on your test needs.

Supported Scenarios:
  • ‍Power on
  • 4 Attach
  • 4 Detach
  • 4 TAU
  • 4 Data Connection
  • 4 VoLTE Call
  • ‍End to end VoLTE test capability
  • Includes real femto, pico, or microcell eNodeB
  • Emulates all core network nodes and allows for data connection to external networks
HSS Emulator
HSS Emulator

Summary of Specifications


Update in Progress

Product Details

Emulates HSS to test the MME & UE

All Solutions

Valid8 exports its products strictly in accordance with all US Export Control laws and regulations which shall apply to any purchase or order. Specifications are subject to change without notice.

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p: +1-855-482-5438
f: +1-781-996-3708

Ordering Information

Product Name: HSS Emulator

Product Code: lte-hss-emulator

Datasheet Page

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