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PDU PCN. TTCN 3 in SGSN testing Peter Eldh. Our business. TTCN 3 introduction project. SGSN development project. Jan. 2004. June 2004. Introducing TTCN 3. Why? The same functional test tool for both GSM & WCDMA access Automation New test ports, interfaces and test objects needed

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pdu pcn

PDU PCN

TTCN 3 in SGSN testing

Peter Eldh

introducing ttcn 3

TTCN 3 introduction project

SGSN development project

Jan.2004

June2004

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
sgsn environment
SGSN environment

SMS

-

GMSC

SM

-

SC

SMS

-

IWMSC

E

C

CAMEL GSM

SCF

Gd

AUC

MSC/VLR

HLR

Ge

D

Gs

A

Iu

Gc

Gr

R

Uu

Iu

Gi

PDN

TE

MT

UTRAN

SGSN

GGSN

TE

Gn

Ga

Gb

Ga

Gp

TE

MT

BSS

Gn

Billing

R

Um

CGF

System

GGSN

Gf

SGSN

EIR

Other PLMN

SGSN

SUT

TTCN3 simulated interface

TTCN3 simulated nodes

sgsn test configuration
SGSN test configuration

Gb stack

Gb API

SGSN

LLC

Gb

LLC TP

TTCN-3

compiled

modules

BSSGP

NS

NS TP

FR

E1

TCAP TP

SS7

TCAP TP

TCAP

functions

in C++

(e.g. enc/dec)

SCCP

SCCP TP

IuC/Gr/Ge

Gd/Ge

MTP3

SCCP TP

L2

SS7 API

E1 or ATM

TTCN-3

RTE

I/f hardware

IuU/Gn/Gp

UDP TP

(Gch, modified Ga)

TTCN-3

TCP TP

UNIX WS

Unix socket

testflow
Testflow

TTCN

Passed Test Cases-

new functionality

FT

Functional Test

PTBPre-Test of Build

(Regression)

Delivery

ST

System Test

Achieved capacity,

Stability…

FOA

ARS

NIV

UCD/NFD

SV

Analyze

SI

SV

System Verification

SI

System Integration

MIT

Modelling

MT

Coding - Review