PDU PCN

1
PDU PCN

• TTCN 3 in SGSN testing
• Peter Eldh

2
Our business
3
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 IV and 1 PLM
• Goal Covering 80 of the legacy functional req.
  with automated test cases 1500 test cases

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SGSN environment
SMS
-
GMSC

SM
-
SC

SMS
-
IWMSC

C

E

CAMEL GSM
SCF

Gd

AUC
MSC/VLR

HLR

Ge

D

Gs

Gc

Iu

A

Gr


Uu

Gi

Iu
R

PDN

TE

MT

UTRAN

TE

SGSN
GGSN

Gn

Ga


Ga

Gb
Gp

TE

MT

BSS

Gn

Billing

Um

CGF

R

System

GGSN

Gf

EIR

SGSN

Other PLMN

SUT
SGSN
TTCN3 simulated interface
TTCN3 simulated nodes
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SGSN test configuration
Gb stack
Gb API
SGSN
LLC
Gb
TTCN-3 compiled modules
LLC TP
BSSGP
NS
NS TP
FR
E1
TCAP TP

SS7
TCAP TP
TCAP
functions in C (e.g. enc/dec)
SCCP TP
SCCP
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
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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
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