News from Rohde&Schwarz - Rohde & Schwarz

Panorama
Phase 1
Research
Software module tests
PCO
…
PCO
L3
PCO
L2
PCO PCO
Interface L1
Engine
- Appl. &
layer
manag.
entity
- Test
software
- …
Phase 2
Modul test
GUI
Operating system
L2/L3 protocol tester
PCO
PCO
PCO
PCO PCO
L1
I Q
RF front-end
Phase 3
Integration test
Protocol tests
Engine
… - Appl. &
layer
manag.
L3
entity
- Test
L2 software
- …
GUI
Operating system
Protocol tester
Phase 4
Optimization
FIG 4
Different configuration
levels of 3G Air
Interface Simulator
TS8950 meet test
requirements of all
product design
phases
Complexity of
test scenario
TS8950 (A)
TS8950 (B)
TS8950 (C)
TS8950 (XL)
Signal
generation
Signal
analysis
Controller
Switch
AMIQ
SMIQ
FSIQ
PSM17
SSCU
Interference
& fading
Signal analysis
& power
measurement
Controller
L1
AMIQ
SMIQ
FSIQ
PSM17
Interference
& fading
Signal analysis
& power
measurement
Controller
AMIQ
SMIQ
FSIQ
PSM17
Interference
& fading
Signal analysis
& power
measurement
Controller
AMIQ
SMIQ
FSIQ
PSM17
Switch
SSCU
Switch
SSCU
Switch
SSCU
Protocol tester
First RF tests
RF module tests
Conformance tests
Protocol tester
gration of the device under test (DUT).
But future test equipment should enable
independent analysis of RF, baseband
and software modules developed
in parallel. Testing via the air
interface in the integration phase can
then concentrate on errors that arise
from module interworking. In the final
optimization phase, complex conformance
tests and real or simulated field
tests are then carried out to improve
product characteristics.
Universal test concept covering
each product design phase
Rohde & Schwarz satisfies the different
requirements of the four phases with
an extremely flexible test concept. The
basis of this is a modular, upgradeable
3G Air Interface Simulator
TS8950 with integrated components
for protocol tests (FIG 4). Instead of
rigid test cases, this highly advanced
test system provides individually parameterized
test methods that can be
combined to form any desired test scenario.
Thanks to this strategy, TS8950
is not only able to respond flexibly to
the still changing specifications resulting
from 3GPP standardization but
also supports manufacturer- and network-specific
test sequences.
As a consequence of the R& TTE
directive of the European Commission,
taking effect on 1 January 2000, mandatory
type-approval tests will be
replaced by binding manufacturers’
declarations of compliance, so this flexible
test concept will gain enormously
in importance. This approach also
ensures compliance even with the stringent
requirements of operators like the
Japanese NTT DoCoMo, which will be
putting the first 3G network into operation
at the beginning of 2001.
The next issue of News from Rohde &
Schwarz will contain more details of
the TS8950 test system.
Holger Jauch
REFERENCES
[1] Peter Ludwig; Frank Körber: Digital Radiocommunication
Test Set CRTx-DUO – Test
platform for HSCSD and multicarrier applications.
News from Rohde & Schwarz (1999)
No. 161, pp 13 –14
[2] Heinz Mellein: Type approval of GSM900/
GSM1800 multiband mobiles using System
Simulator TS8915. News from Rohde &
Schwarz (1998) No. 157, pp 28–29
[3] Josef Wolf: Signal Analyzer FSIQ – The ideal
analyzer for the third mobile-radio generation.
News from Rohde & Schwarz (1998)
No. 160, pp 4 –6
[4] Klaus-Dieter Tiepermann; Andreas Pauly: Fit
for the next millennium – W-CDMA signals
with Signal Generator SMIQ and Software
WinIQSIM. News from Rohde & Schwarz
(1999) No. 161, pp 16 –17
[5] Wolfgang Kernchen; Klaus-Dieter Tiepermann:
I/Q Modulation Generator AMIQ –
Convenient generation of complex I/Q signals.
News from Rohde & Schwarz (1998)
No. 159, pp 10–12
Reader service card 164/10 for more
information about 3G solutions
News from Rohde & Schwarz Number 164 (1999/IV) 31