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GL Announces LTE Conformance Test Suite

Welcome to another issue of GL Communications' Newsletter providing information and insight into our MAPS™ LTE Conformance Test Suite that tests the conformance of LTE S1 and LTE X2 interfaces in the LTE network (eNodeB, MME) per 3GPP standards.

MAPS™ LTE S1 and LTE X2  Conformance Test Suite


GL's MAPS™ LTE Conformance Test Suite is designed with 50+ test cases, as per 3GPP TS 36.413 (LTE S1) and TS 36.423 (LTE X2) specifications. It includes inbuilt conformance scripts for eNodeB conformance in S1 interface, and multiple eNodeB’s in X2 interface as per 3GPP standards.

Test cases include general Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 Application Protocol (S1AP) and X2 Application Protocol (X2AP) messaging and call flow scenarios over LTE network. Logging and pass/fail results are also reported. Test cases verify conformance of actions such as UE attach/detach, periodic updating, E-RAB setup, X2 setup, Handover procedure, UE context release, and error indication.

LTE S1 Interface Conformance Testing

MAPS™ LTE S1 emulator can be used to test eNodeB for all the listed S1 AP procedures, while the suite can act only as MME with a conformance script to simulate various network side procedures conforming various success/failure test cases and automating the entire eNodeB (DUT) testing.

Supported Test Cases

  • Paging success/failure
  • Paging via IMSI success/failure
  • UE attach success, UE detach, UE tracking area update
  • Periodic updating
  • Service Request
  • E-RAB Setup procedures
    • GBR E-RAB setup success
    • Non GBR E-RAB setup success
    • E-RAB setup failure
    • E-RAB release
    • E-RAB Modify - priority trigger, QCI changes, UE AMBR
    • E-RAB Modify failure
  • Setup context – Fail, Success
  • UE Context Release, Modification
  • Handover
    • Success Handover S1 interface
    • Handover prepare failure
    • Handover resource allocation failure
    • Handover failed: Multiple E-RAB ID instances
    • Handover Cancel
  • S1 Setup
    • S1 Setup Success
    • setup failure and resend setup
  • Reset all resource, partial resource
  • Error Indication
  • Location report

LTE X2 Interface Conformance Testing

MAPS™ LTE X2 emulator can be configured as Source eNodeB connected to DUT (Target eNodeB). The conformance script can simulate various procedures conforming success/failure test cases and automating the entire Target eNodeB (DUT) testing.

Supported Test Cases

  • Load Indication (send load to and receive load from target eNodeB)
  • Error Indication (send error to and receive error from target eNodeB)
  • X2 Setup
    • X2 Setup Success
    • Setup failure and resend setup
  • Configuration update
    • Send/receive configuration update
    • Configure update success after re-send
    • Resend Configuration update after failure
    • Response Configuration update failure

MAPS™ LTE X2 conformance Source eNodeB Emulator
MAPS™ LTE X2 conformance setup success test case

Important Features

  • Simulates MME to test eNodeB in LTE S1 interface and two eNodeB elements in LTE X2-AP interface
  • Supports LTE Control plane
  • Generates hundreds of UE Signaling (Load Testing)
  • Generates and process S1/NAS, X2-AP (valid and invalid) messages
  • Supports GTP Traffic (GTP User Plane Data) which includes verification like HTTP traffic generation capability
  • Supports Mobility Management, Load Management, Reporting of General Error Situations, Re-setting X2, Setting up the X2, and eNodeB Configuration Update procedures
  • Customize call flow and message templates using Script and Message Editor
  • Ready-to-use scripts for quick testing
  • Scripted call generation and automated call reception
  • Script based & protocol independent software architecture
  • Provides call statistics and events status
  • Automation, Remote access, and Schedulers to run tests 24/7

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