TTCN-3 Based Automation Framework for LTE UE Protocol Stack
Testing
TTCN-3 Based Automation Framework for LTE UE Protocol Stack
Testing1Theofanis Vassiliou-Gioles Testing TechnologiesRanganath
Mahapatra Larsen & Toubro Infotech
LTE Network Architecture2SGSNMMEeNBUEHSSServing GWPDN
GWPCRFInternetOperator IP ServicesePDGTrusted non 3GPP IP
AccessTrusted/Untrusted non-3GPP/3GPP IP AccessUntrusted non 3GPP
IP
AccessUEGERANUTRANLTE-UuX2LTE-UuS3S10S11S4S5S1uSGiS6aS7S2bWn*S2cS2aNetwork
Simulator3NASRRCPDCPRLCMACL1UE RRCS1-AP
PDCPSCTPRLCIPMACL2L1L1NASS1-APSCTPIPMACL1LTE-UueNobeBS1-MMEMMEProtocol
Stack FunctionalityUE protocol stack communicates with multiple
elements in the network side though eNodeB. UE control plane
protocol layers are mapped to eNodeB and MME. Except for the NAS
layer messages, the other layers of UE interact directly with
eNodeB protocol stack. Relay4Testing Architecture5Test
ManagementControl & LoggingAutomation FrameworkETSI Test
Scripts in TTCN-3SRB Codec ASN.1DRB CodecPDCPRLCMACMAC-PhySystem
Adaption LayerCodec LayerL2 Layer StubsUE Protocol
StackRRCPDCPRLCMACMAC-PhyUDP / IPTRITCIComponents6Incremental
Development & Testing7
Test Execution8
Test case drives the specified procedures for validation of the
stack. The Test Manager of IDE provides a GUI interface to run the
test cases individually or in batches. The frame work provides log
capturing and debugging mechanism both in text and graphical
representationOur Value Adds on ETSIs SolutionETSIs SolutionETSI
Test suite provides TTCN-3 scripts for protocol conformance
testing. It provides parallel test components and ports for
seamless mapping of protocol layers for network side entities.
9Our Value AddsIn order to optimize the development cycle, we
have utilized ETSI test suites, commercially available IDE and
external plug ins.Adaptation layers were developedA pseudo MAC-Phy
interface layer was implemented. Challenges10
Thank You Our Business Knowledge, Your Winning Edge.Experts in
Test Automation
