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MAPS™ UMTS for IuPS Interface Emulator
(Scripted UMTS IuPS Emulation over IP)

MAPS™ UMTS IuPS Interface Emulator Software Ver 4.7.11 | Download Now!


Background

UMTS, or Universal Mobile Telecommunications System is a 3rd generation mobile technology evolved from GSM technology. It uses W-CDMA (Wideband Code Division Multiple Access) as radio access. With increased spectral efficiency and high bandwidth, UMTS can support broadband data, voice and video. The underlying transport for UMTS in the core network can be Asynchronous Transfer Mode (ATM), or IP.

 

 
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UMTS supports integrated services such as multimedia and global roaming to mobile users. In essence, UMTS IuPs interface is the Gateway to the World Wide Web. More precisely, IuPs, as shown in the figure, is the interface between the RNC (Radio Network Controller) and the SGSN (Serving GPRS Support Node). 

SGSN manages mobile location whether within the carrier's network or roaming outside.  Once a user turns on her mobile, a new IP address gets assigned and IP connectivity is available with quality of service (bit rate allocation) based on subscription, and tunnels are created for mobile flows to/from that mobile.  These data tunnels carry encapsulated traffic such as http, ftp, email, etc.  SMS may also be carried by the signaling plane to/from the mobile.  IuPs emulation and analysis can be very important in the design, verification, and troubleshooting of a carrier's mobile data network.

The IP based UMTS network consists of the following components -

  • Radio Network Controller (RNC)
  • Mobile Switching Centre (MSC)
  • Serving GPRS Support Node (SGSN)
  • Gateway GPRS Support Node (GGSN)
  • NodeB
  • Femto Home NodeB (Femto Cell) and Femto Home Node Gateway (HNB-GW)

Overview

GL's Message Automation & Protocol Simulation (MAPS™), is a protocol simulation and conformance test tool that supports a variety of protocols such as SIP, MEGACO, ISDN, SS7, GSM, LTE, and many other TDM, IP, and Wireless protocols.  MAPS™ has been enhanced for testing UMTS IuPs interface. It can simulate RNC (Radio Network Controller), and 3G SGSN (3G Serving GPRS Support Node) by generating RANAP and DTAP signaling messages over SCTP as Transport layer in an IP network as defined by 3GPP standards.

The application gives the users the unlimited ability to edit messages and control scenarios (message sequence). “Message sequences” are generated through scripts. “Messages” are created using message templates.

The application is available as

  • MAPS™ - IuPS (Item # PKS164)

In addition, GL also supports the following UMTS analyzers and simulators:

The product also supports Mobile traffic core – GTP (ETH101) simulation for user-plane packet transmission and reception services between any two nodes in LTE and UMTS networks. Mobile Traffic Core – Gateway (ETH102) module allows simulation of Gateway Traffic to test media gateway telephony interfaces over IP. These modules also support generation and verification of data traffic such as Email, FTP, Web (HTTP), Video, and more.


Main Features

  • Simulates RNC, and SGSN entities.
  • Generates and supports all Mobility Management, Session Management, RANAP and DTAP messages.
  • User controlled access to RANAP, and DTAP messages.
  • Ready scripts for Routing Area Updating, GPRS Attach, and Detach procedures for quick testing.
  • Supports Authentication, TMSI Reallocation, Encryption, and other optional procedures
  • Supports mobile traffic simulation with additional licenses
  • Provides fault insertion, and erroneous call flows testing capability.
  • Impairments can be applied to messages to simulate error conditions
  • Supports customization of call flows and message templates using Script editor and Message editor.
  • Supports scripted call generation and automated call reception.
  • Supports mobile traffic simulation with additional licenses
  • Provides detail protocol trace with full message decoding, and graphical ladder diagrams of call flow with time stamp
  • Call flow graph allows to easily verify the messages exchanged with DUT
  • Displays call status, results, call information, total iterations to be done, and completed iterations
  • Script based & protocol independent software architecture.
  • Provides call statistics and associated captured events and error events during call simulation.

Supported Protocol Standards

UMTS IuPS Protocol Stack

Supported Protocols Specification Used
IuPS Interface
SCCP Q.713, CCITT (ITU-T) Blue Book
M3UA RFC 3332
RANAP 3GPP TS 25.413 V9.1.0
GMM / SM 3GPP TS 24.008 V5.16.0 (2006-06)
SMS 3GPP TS 03.40 V7.5.0 & 3GPP TS 04.11 V7.1.0 GSM 03.38 version 7.2.0 Release 1998

Test Configuration

The test configuration window allows users to configure the necessary parameters in order to establish communication between MAPS™ and the DUT.

The MAPS™ UMTS configuration window consists of SCTP configuration for Iu-PS interfaces. Default profile used to configure MAPS™ UMTS IuPS with SGSN or RNC parameters.

Screenshot of Testbed Setup to configure MAPS™ as IuPS Nodes


Call Generation

Typical Call Flow between the UMTS IuPS network entities

Call Generation option allows the user to simulate outgoing communications where an outgoing call is initiated by sending call control messages using proper scripts and profiles. The profile allows necessary parameters of call control messages to be changed during runtime. Messages are exchanged between MAPS™ and the DUT. MAPS™ application acts as either the Caller or resides at the network terminal acting as Callee.

In this document, we are considering the call flow between the RNC and SGSN nodes for Attach Request and Routing Area Updating (RAU) procedures.

Testing SGSN (Attach Procedure)

As depicted in figure below, MAPS™ - IuPS acts as RNC processing the call flow and responds to messages from SGSN Node. The MAPS initiates the Attach Procedure by sending Attach Request to the DUT (SGSN). The DUT on receipt of ATTACH REQUEST message should send a CC connection confirm message in response as shown in the figure below.

MAPS™ UMTS IuPS configured as RNC

Call Generation at RNC Node


Call Reception

Call generated from another entity can be automatically detected in call reception window by pre-setting the required scripts in the Incoming Call Handler window.

Testing RNC

As seen in the figure below, MAPS™ acts as SGSN, and tests the DUT that is configured as RNC. This test is performed to ensure that the MAPS™ (SGSN) on receipt of ATTACH REQUEST message from RNC, sends a CC connection confirm message in response. MAPS™ responds to the messages received from RNC and then completes the call flow.

MAPS™ UMTS IuPS configured as SGSN

Call Reception at SGSN Node


Bulk Call Simulation

MAPS™ supports Bulk Call Simulation and Stress/Load Testing capabilities through Load Generation feature. Load Generation window helps users configure Stress/Load Testing parameters such as Call per second (CPS) or Busy hour call attempts (BHCA), Max Simultaneous Calls and Burst parameters.

Screenshot of Load Generation Parameters


Customization of Call Flow and Messages Using Pre-Processing Tools

  • Script Editor - The script editor allows the user to create / edit scripts and to define variables for the protocol fields. The script uses pre-defined message templates to build call flow and perform send and receive actions. Script editor provides options to run the test for multiple iterations in sequential or random flow. Commands allow retransmission of messages with specific interval. It also includes traffic commands to send and monitor voice, tones, digits, on the created sessions. It includes raw commands (send/monitor signaling bits, monitor power level, set idle code, and end task) to send WCS commands directly from MAPS™ to the server.

    Screenshot of Script Editor

  • Profile Editor - Profiles are used to provide the user configured values to the fields in the Messages (i.e. Message Template in MAPS™) through variables which are going to change during the course of a call. An XML file defines a set of multiple profiles with varying parameter values that allow users to configure call instances in call generation and to receive calls.
  • Screenshot of Profile Editor

  • Message Editor - The Message Template is a *.HDL file that comprises of protocol encoding parameters with preset values. It is required to create a message template for every message in a protocol. The message templates are called within the scripts to perform scenario based testing.

    Screenshot of Message Editor


Call Flow & Script Execution Control

Message Sequence - MAPS™ provides protocol trace with full message decoding, custom trace, and graphical ladder diagrams of call flow with time stamp while simulation is running. Call flow graph allows to easily verifying the messages exchanged between MAPS™ and DUT. See Call Generation and Call Reception for details

Script Contents & Script Flow - The Scripts Contents window displays the contents of the script selected for call generation or reception. The Script Flow window displays the set of statements successfully executed by MAPS™ to help users in troubleshooting a particular the call scenario.

Events & Event Profile Editor - User-defined events allow redirection of script execution on-the-go. The custom parameters in the events can also be changed during script execution using Event Profiles.

Screenshot of Script Contents and Script Flow


Call Statistics, Events, Link Status

Call Statistics & Status - By default, all call handling scripts (irrespective of the type of the functions) are assessed by MAPS™ to provide statistical information about Total Calls, Active Calls, Completed Calls, Passed Calls, Failed Calls, and Calls/Sec . It is also possible to characterize the statistical information under different groups of call handling scripts under a unique heading. In addition, Call Generation and Call Reception windows provide useful call status & script execution results.

In addition, Call Generation and Call Reception windows provide useful call status & script execution results.

Screenshot of Call Statistics and Status

Events Reporting – MAPS™ provides Event Log, Error Events, and Captured Errors windows that log the captured events and errors encountered during the progress of the call.

Screenshot of Event Log

Link Status - Link Status window indicates transport related information of the protocol, for example, if SCTP is used as transport, it indicates if the association is Up or Down in the Link Status window.


Buyer's Guide:

Item No. Item Description
PKS164 MAPS™ UMTS IuPS interface
ETH100
ETH101
ETH102
Mobile Traffic - PacketCheck™
Mobile Traffic Core – GTP
Mobile Traffic Core - Gateway
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LTS206 OC-3 / STM-1 UMTS Protocol Analysis
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PKS142 MAPS™ LTE eGTP Emulator
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PKS121

PKS122

PKS123

PKS124

PKS125

PKS130
MAPS™ SIP Emulator

MAPS™ SIP Conformance Test Suite (Test Scripts)

MAPS™ MEGACO Emulator

MAPS™ MEGACO Conformance Test Suite (Test Scripts)

MAPS™ MGCP Emulator

MAPS™ MGCP Conformance Test Suite (Test Scripts)

MAPS™ SIGTRAN Emulator
PKS100 PacketGen™ with PacketScan™
PKV100 PacketScan™ (Online and Offline)
PKB100 RTP Toolbox™
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IPN010 IPNetSim™ - 100Mbps of through bandwidth
IPN100 IPNetSim™ - 1Gbps of through bandwidth
IPN400 IPNetSim™ - 1Gbps w/ 4 links through bandwidth

Specifications are subject to change without notice.

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