PDU PCN TTCN 3 in SGSN testing Peter

PDU PCN TTCN 3 in SGSN testing Peter Eldh

Our business © Ericsson AB 2005 2 TTCN 3 in SGSN testing 2005 -04 -26

Introducing TTCN 3 § Why? – – – § The same functional test tool for both GSM & WCDMA access Automation New test ports, interfaces and test objects needed Wanted the advantages in TTCN 3 (speed, debug, usability…) Re-writing of existing test cases (automation requirements, different structure to support new test objects) How? – – – Separate project with GA targeting the start of a SGSN development project 7 persons – 6 I&V and 1 PLM Goal: Covering 80 % of the legacy functional req. with automated test cases ~ 1500 test cases TTCN 3 introduction project Jan. 2004 © Ericsson AB 2005 SGSN development project June 2004 3 TTCN 3 in SGSN testing 2005 -04 -26

SGSN environment SMS-GMSC SMS-IWMSC E SM-SC C CAMEL GSM SCF Gd MSC/VLR A Iu Uu R TE Gs MT D Ge Gr Iu UTRAN HLR AUC SGSN Gc Gi Gn Gb TE MT R BSS Gn Um Ga TE Ga Gp CGF GGSN SGSN PDN GGSN Gf Billing System EIR Other PLMN SGSN SUT TTCN 3 simulated interface TTCN 3 simulated nodes © Ericsson AB 2005 4 TTCN 3 in SGSN testing 2005 -04 -26

SGSN test configuration Gb stack Gb API LLC BSSGP NS FR E 1 Gb LLC TP NS TP TCAP TP SS 7 Iu. C/Gr/Ge Gd/Ge Iu. U/Gn/Gp TCAP TP TCAP SCCP MTP 3 L 2 E 1 or ATM SGSN SCCP TP functions in C++ (e. g. enc/dec) SS 7 API TTCN-3 RTE I/f hardware UDP TP (Gch, modified Ga) TCP TP Unix socket © Ericsson AB 2005 TTCN-3 compiled modules 5 TTCN-3 UNIX WS TTCN 3 in SGSN testing 2005 -04 -26

Testflow TTCN Passed Test Casesnew functionality FT Functional Test PTB Pre-Test of Build (Regression) Delivery ST System Test Achieved capacity, Stability… FOA ARS NIV UCD/NFD SV Analyze SI Modelling SI MIT MT System Integration SV System Verification Coding - Review © Ericsson AB 2005 6 TTCN 3 in SGSN testing 2005 -04 -26

© Ericsson AB 2005 7 TTCN 3 in SGSN testing 2005 -04 -26