LTE MME Emulator

4

designed for lab use and

for testing UE, eNodeB,

MME, Serving GW and

Inter-RAT handovers with

SGSN

4 Implements all the

required protocols - S1AP

and SCTP to

communicate with

eNodeBs, eGTP-C

(GTPv2-C) to

communicate with S-

GWs, SGSNs and MMEs,

and DIAMETER to

communicate with HSS.

An MME implementation The LTE MME Emulator is a part of the family of LTE Network Equipment Emulators from Polaris Networks. The LTE

Network Equipment Emulators together allow testing in a variety of network topologies, allowing the user to utilize lab

equipment effectively and reduce capital expenditure and ongoing support costs associated with a test lab. The MME

Emulator provides a lower-cost solution and greater control as compared to a real MME for testing the functionality,

scalability and performance of LTE User Equipment and Network Equipment, including MME, S-GW and eNodeB.

The MME Emulator includes all the network interfaces and implements all the communication protocols required for

an MME to operate in an LTE/SAE network. In addition, the MME Emulator provides a scripting interface (using the

TCL programming language) to configure and control its functions and obtain performance statistics and test results.

The MME Emulator also supports the ability to emulate multiple MME devices for the purpose of scalability testing.

APPLICATIONS

LTE User and Network Equipment Manufacturers can use the MME Emulator both for Unit Testing during product

development and for System QA and Regression Testing. The Emulators can test the functionality and scalability and

measure the performance of various network elements, by simulating procedures such as UE Attach, Detach, Intra-RAT

and Inter-RAT Handovers, Dedicated Bearer creation and end-to-end Data Transfer.

LTE Network Operators can use the MME Emulator in a pre-deployment test bed to validate the Key Performance

Indicators provided by equipment vendors, such as busy hour call attempts and the number of simultaneous active

bearers.

The MME Emulator can be used to simulate failure scenarios during Session Setup, Subscriber Authentication and

Bearer Setup and to simulate error scenarios such as incomplete signaling.

FEATURES

The MME Emulator includes

The S1AP and SCTP protocols required to communicate with an eNodeB. It can communicate with multiple eNodeBs

and it can emulate multiple MMEs at the same time for testing Handover scenarios.

The eGTP-c (GTPv2-c) protocol required to communicate with a S-GW.

The eGTP-c (GTPv2-c) protocol required to communicate with an SGSN.

The eGTP-c (GTPv2-c) protocol required to communicate with another MME

The DIAMETER protocol required to communicate with an HSS for AAA procedures.

An integrated HSS Simulator to test an eNodeB, UE, S-GW or PDN-GW without requiring a real HSS for Subscriber

Authentication. The HSS Simulator can be used to simulate UE Attach, Detach and Handover scenarios.

A scripting interface using the TCL programming language to configure and control its functions and obtain

performance statistics and test results. This automation of control allows the user to run many test cases simultaneously

or serially and to create real-world scenarios for heavy load and long-duration stability tests.

www.polarisnetworks.net

TECHNICAL SPECIFICATIONS

System Requirements

MME Emulator runs on a PC with x86 or x86-64 CPU, Linux OS, and minimum 1GB RAM.

System Interfaces

10/100/1000 Ethernet for connecting to eNodeB, S-GW, SGSN and MME over S1-MME, S11, S3 and S10

Interfaces respectively.

TEST SCENARIOS

4 Accept S1 Setup

Requests from eNodeBs,

or reject them with

specified Cause

4 Reset the S1 connection

with some or all eNodeBs

at any arbitrary time, with

specified Cause

4 Accept UE Attach

Requests from UEs, or

reject them with specified

Cause

4 Release established UE

contexts at any arbitrary

time, with specified Cause

4 Accept a UE Handover

Request (with and without

MME or SGW relocation),

or Reject a Handover

Request with specified

Cause

4 Issue a Paging request for

a specified UE

4 Simulate an Overload

condition by starting

Overload Start and Stop

messages, with specified

Overload Action

4 Activate or Deactivate a

Trace procedure, and

record the Cell Traffic

Trace received from the

eNodeB

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CONTACT INFORMATION

For further information, call a

Polaris Networks sales

representative at the phone

numbers listed below, or email

us at:

sales@polarisnetworks.net

US Office

Polaris Networks Inc.

75 Robbins Road

Lexington, MA 02421

USA

Phone: +1-781-862-4900

India Office

EP Y3, Sector V,

Salt Lake Electronics Complex

Kolkata 700091

India

Phone: +91-33-23575511

VoIP: +1-781-652-9603

Protocol Communication between devices

Internal control plane interface between protocol layers

Script-driven configuration, control and monitoring

Figure: LTE MME Emulator Architecture

TCL Scripting Interface

HSS Simulator

eNodeB

HSS

MME

S-GWS1AP

SCTP

Diameter

GTPv2-C

GTPv2-C

NAS

S1AP

SCTP

Diameter

GTPv2-C

UE

NAS

SGSN

GTPv2-C

MME Emulator

MME Controller

Supported Network Protocols and Standards

3GPP TS 24.301 Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS)

3GPP TS 29.274 Evolved General Packet Radio System (GPRS) Tunnelling Protocol for Control Plane (GTPv2-C)

3GPP TS 36.413 Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio

Access Network (E-UTRAN); S1 Application Protocol (S1AP)

IETF RFC 3588 Diameter Base Protocol

IETF RFC 4960 Stream Control Transmission Protocol

www.polarisnetworks.net

LTE MME Emulator

Figure: LTE MME Emulator GUI

TEST SCENARIOS

4 Send a Warning Message

Request to an eNodeB

with specified Warning

Area List, Warning Type,

etc

4 Request an eNodeB to

send a Location Report

for a UE with specified

Request Type, and record

the Location Report from

the eNodeB

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