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Alcatel-Lucent
2008
File name
UMTS900 Trial RF Test Report
Reference Date Edition Page
1/22/2008 1a 1
INDOSAT
UMTS 900 TRIAL
UMTS900 RF TEST REPORT
JANUARY, 2008
Alcatel-Lucent
2008
File name
UMTS900 Trial RF Test Report
Reference Date Edition Page
1/22/2008 1a 2
Table of contents
1 INTRODUCTION .................................................................................................................................................. 3
2 UMTS900/ GSM900 INTERFERENCE TEST ...................................................................................................... 3
2.1 Interference Tests for non-collocated GSM900 & UMTS900 sites ........................................................ 3
2.1.1 Test Purpose ........................................................................................................................................ 3
2.1.2 Test Requirement ................................................................................................................................. 3
2.1.3 Test Configuration ................................................................................................................................ 3
2.1.4 Test Scenario ....................................................................................................................................... 4
2.1.5 Test Result Non Co-location Scenario ................................................................................................. 5
2.2 Interference Tests for collocated GSM900 & UMTS900 Sites ............................................................. 12
2.2.1 Test Purpose ...................................................................................................................................... 12
2.2.2 Test Requirement ............................................................................................................................... 12
2.2.3 Test Configuration .............................................................................................................................. 12
2.2.4 Test Scenario ..................................................................................................................................... 13
2.2.5 Test Result Co-location Scenario ....................................................................................................... 14
2.3 GSM UL Interference QoS Monitoring ................................................................................................... 20
3 UMTS900 /CDMA800 INTERFERENCE TEST .................................................................................................. 21
3.1 Test Purpose ............................................................................................................................................ 21
3.2 Test Requirement .................................................................................................................................... 21
3.3 Test Configuration ................................................................................................................................... 21
3.4 Test Result ............................................................................................................................................... 21
4 RF SERVICE COVERAGE TEST....................................................................................................................... 23
4.1 UMTS Service Coverage (soft handover) .............................................................................................. 23
4.2 UMTS Service Coverage (end of cell) .................................................................................................... 24
4.2.1 Voice call service coverage ................................................................................................................ 24
4.2.2 GSM BCCH coverage ........................................................................................................................ 25
Alcatel-Lucent
2008
File name
UMTS900 Trial RF Test Report
Reference Date Edition Page
1/22/2008 1a 3
1 INTRODUCTION
UMTS900 trial is established between INDOSAT and ALCATEL-LUCENT in Banjarmasin area. Starting
on 9th Jan 2008 after frequency license approved by DIJET POSTEL, RF activities is restart. There are 2
major RF activities: Interference test, Coverage test has been asset to evaluate UMTS900 RF
performance.
2 UMTS900/ GSM900 INTERFERENCE TEST
The introduction of UMTS in 900MHz band requires co-existence analysis between GSM and UMTS. The goal of this test case is to measure quality degradation and interference level of both systems according to the frequency spacing (between GSM and UMTS).
2 cases are evaluated: non-collocated sites and collocated sites
2.1 Interference Tests for non-collocated GSM900 & UMTS900 sites
2.1.1 Test Purpose
The test purpose is to measure the impact of quality and interference level in U900/G900 non-collocated scenario.
Two frequency spacing are proposed to be tested: 2.6 (no guard band) &2.8 (one channel guard band)
2.1.2 Test Requirement
Environment: Live / Static & Mobility � Non-collocated UMTS900 and GSM900 sites are mandatory for Downlink test cases and suitable for
Uplink tests.
� GSM BCCH set to ARFCN=26, UMTS frequency reuse GSM ARFCN 1-25. ( 2.6 frequency spacing) � GSM HO has to be deactivated in involved GSM sites ( In this case we used TEMS forced to
channel 26) � Load generation: UMTS DL load: OCNS 95% ( to simulate maximum transmit power from UMTS)
Equipments & tools:
� UMTS UE traces (X-CAL drive test tool) � GSM UE traces (TEMS drive test tool) � CTb/OT cell trace (RNC traces) � Spectrum analyser HP 8594E
2.1.3 Test Configuration
2.1.3.1 Conf1: GSM900/UMTS900 interference tests with GSM900 as victim
� GSM voice calls set up at 3 locations : Near, Middle , Far from GSM site. Measure GSM qualtiy � UMTS voice calls set up at same locations : Near, Middle , Far from GSM site � GSM Call performs at same location & drive test is realised up to cell edge. Measure GSM quality
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2008
File name
UMTS900 Trial RF Test Report
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GSM 900
UMTS 900
Copyright © 1996 Northern Telecom
Copyright © 1996 Northern Telecom
Copyright © 1996 Northern Telecom
UMTS 900
GSM 900
Copyright © 1996 Northern Telecom
Copyright © 1996 Northern Telecom
Copyright © 1996 Northern Telecom
2.1.3.2 Conf2: GSM900/UMTS900 interference tests with UMTS900 as victim
� UMTS voice call setup at 3 location: Near, Middle, Far from UMTS site. Measure UMTS quality � GSM900 voice calls setup at same 3 location: Near, Middle, Far from UMTS site � UMTS call performs at same location& 3G drive tests are realised up to cell edge. Measure UMTS
quality
2.1.3.3 Test Output
For GSM UE victim: � RxQual vs. Rxlev � UE Tx Power � UL RSSI on GSM BTS
For UMTS UE victim: � CPICH EcNo vs CPICH RSCP � DL SIR � UL RSSI report by UMTS NodeB � UE Tx Power
2.1.4 Test Scenario
2.1.4.1 Non-Colocation (Face to Face UMTS &GSM)
2.6 MHz band guard between GSM900 and UMTS900 frequency channel
UMTS reuse GSM ARFCN 1-25 where GSM900 BCCH set to ARFCN 26
Step Action Expected result
11
Switch UMTS 900 OFF : Check GSM
Perform GSM voice call
Call test at 3 locations, with drive test from GSM site
GSM Measurements without interferer: RxLev, RxQual, MS Tx power,
GSM UL RSSI
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File name
UMTS900 Trial RF Test Report
Reference Date Edition Page
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Step Action Expected result
22
Switch UMTS900 ON : Check GSM
UMTS DL load = 95% OCNS (simulate max transmit power from UMTS)
Perform UMTS call, Perform GSM voice call
Call test at 3 locations, with drive test from GSM site
GSM Measurements with interferer: RxLev, RxQual, MS Tx power,
GSM UL RSSI
33
Switch GSM Cell OFF: Check UMTS
UMTS DL load = 95% OCNS (simulate max transmit power from UMTS)
Perform UMTS voice call
Call test at 3 location, with drive test from UMTS site
UMTS Measurements without interferer: Rscp, Ec/No, UE Tx power
UMTS UL RSSI
44
Switch GSM900 ON : Check UMTS
UMTS DL load = 95% OCNS (simulate max transmit power from UMTS)
Perform UMTS voice call
Call test at 3 location, with drive test from UMTS site
UMTS Measurements with interferer: Rscp, Ec/No, UE Tx power
UMTS UL RSSI
2.1.5 Test Result Non Co-location Scenario
With this scenario, UMTS is measured at AnjirPasar sector3 where all other UMTS cells are locked.
GSM is measured at AnjirSerapat sector1 (BCCH 26). 3 locations reveal as picture below
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2.1.5.1 STATIC LOCATION TEST RESULT
2.1.5.1.1 GSM DL & UMTS UL& DL test Result
2.1.5.1.1.1 Location1
2.1.5.1.1.2 Location2
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2.1.5.1.1.3 Location3
2.1.5.1.2 GSM UL test Result: Spectrum Analyser
2.1.5.1.2.1.1 UMTS Call, No GSM call at ARFCN 26
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2.1.5.1.2.1.2 UMTS call, GSM call at ARFCN 26
2.1.5.2 STATIC LOCATION RESULT ANALYSIS
2.1.5.2.1 Downlink measurement at GSM
From RXQUAL/ RXLEV measurement at 3 locations,
GSM location1 (far from GSM site) shows error result (RXLEV is too different when no/with UMTS) due
MS not in the same position, at end of coverage where signal variant is high, the MS location is
important. But the overall result of measurement where UMTS call is on shows that “there is no
impact to GSM DL quality”
2.1.5.2.2 Uplink measurement at GSM (spectrum analyser)
The above result from spectrum analyser, show that “no spurious signal from UMTS to GSM signal
channel 26”
2.1.5.2.3 Uplink/Donwlink measurement at UMTS
UMTS uplink RSSI is measured by NodeB, but also broadcasts from NodeB to Ue. With UE trace tool,
the uplink RSSI can be read from NodeB broadcast channel.
� From 3 location measurements: Uplink RSSI doesn’t show different impact when call
with/without GSM
� Downlink measurement on UMTS quality didn’t show different impact when call with/without
GSM (Ec/Io, SIR to reveal UMTS quality)
From this trial scenario, we can’t see impact on these inter-systems interference even without guard
band between 2 systems. But please note that the site distance is 9.2 Km and antenna height is
different on GSM and UMTS. The impact might be there if UMTS and GSM distance is less and
Antenna is face to face with nearly height level.
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UMTS900 Trial RF Test Report
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As well the test has few sampling measurement where we need more samples (with different type
of services) to evaluate the impact of inter-system interference. This limitation is due to time
constraint. For future test, these constraints have to be well organise to get accuracy of the result
2.1.5.3 Drive Test result
2.1.5.3.1 GSM Drive Test Result, MS lock to AnjirSerapat1
GSM RXLEV: No UMTS GSM RXLEV: with UMTS
GSM RXQUAL: No UMTS GSM RXQUAL: with UMTS
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2.1.5.3.2 UMTS Drive Test Result: Ue lock to AnjirPasar3
UMTS Ec/Io: No GSM UMTS Ec/Io: with GSM
UMTS RSCP: No GSM UMTS RSCP: with GSM
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UMTS UeTXPWR: No GSM UMTS UeTXPWR: with GSM
2.1.5.4 DRIVE TEST RESULT ANALYSIS
From drive test, only downlink measurement is focus, area by area comparison to reveal any
interference impact when measure with/without inter-system on air from mobility
GSM measurement
GSM measurement look to be error (better result at cell edge when there is UMTS call) , this is due to
MS location is different ( no external MS antenna).When the MS is at cell edge the signal variant
become high so as MS location become important.
But from measurement with UMTS call, the plot show non-degradation at area near to middle cell
(we should not consider cell edge in this case due to error measurement from MS location)
UMTS measurement
UMTS measurement on signal quality Ec/Io and signal level RSCP shows no different when GSM is
on/off.
But UeTXPWR where area near to the UMTS site shows some different when GSM is off/on. This could
be due to MS power algorithm, the further investigation with more sampling measurement is
necessary in this case.
Same as static location result , this trial scenario can’t see impact on inter-systems
interference even without guard band between 2 systems. But please note that the site
distance is 9.2 Km and antenna height is different on GSM and UMTS. The impact might be
there if UMTS and GSM distance is less and Antenna is face to face with nearly height level.
As well the test has few sampling measurement where we need more samples (with
different type of services) to evaluate the impact of inter-system interference. This
limitation is due to time constraint. For further interference test, these constraints have to be
well organise to get accuracy result
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2008
File name
UMTS900 Trial RF Test Report
Reference Date Edition Page
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2.2 Interference Tests for collocated GSM900 & UMTS900 Sites
2.2.1 Test Purpose
The test purpose is to measure the impact of quality degradation and interference level when GSM900 and UMTS900 are collocated (re-use of GSM design for UMTS 900 deployment)
Two frequency spacing are proposed to be tested: 2.6 (no guard band) &2.8 (one channel guard band)
2.2.2 Test Requirement
Environment: Live/ static test
� Collocated UMTS900 and GSM900 sites. GSM BCCH set to ARFCN=26, UMTS frequency reuse GSM ARFCN 1-25 ( 2.6 MHz frequency spacing)
� Case of collocated UMTS900 and GSM900 sites, the solution will be to deactivate the power control on 2G to simulate a non-collocated Uplink scenario.
� Load generation: UMTS DL load: OCNS 85%
Equipments & tools:
� UMTS UE traces (X-CAL drive test tool) � GSM UE traces (TEMS drive test tool) � CTb/OT cell trace (RNC traces) � Spectrum analyser HP 8594E
2.2.3 Test Configuration
2.2.3.1 Conf1: GSM900/UMTS900 interference tests GSM900 as victim
� GSM call perform voice calls in different location : Middle , Far from site. Measure GSM quality � UMTS Call perform voice calls at the same with GSM location: Middle , Far from site � GSM Call perform at same location & drive test is realised up to cell edge. Measure GSM quality
2.2.3.2 Conf2: GSM900/UMTS900 interference tests UMTS900 as victim
� UMTS call perform voice call in different locations: Middle, Far from site. Measure UMTS quality � GSM Call perform voice calls at the same with UMTS location: Middle , Far from site � UMTS Call perform at same location & drive test is realised up to cell edge. Measure UMTS quality
2.2.3.3 Test Output
For GSM UE victim: � RxQual vs. Rxlev � UE Tx Power � UL RSSI on GSM BTS
For UMTS UE victim: � CPICH EcNo vs CPICH RSCP � DL SIR � UL RSSI report by UMTS NodeB � UE Tx Power
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UMTS900 Trial RF Test Report
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2.2.4 Test Scenario
2.2.4.1 Co-location UMTS&GSM
2.6 MHz band guard between GSM900 and UMTS900 frequency channel.
UMTS reuse GSM ARFCN 1-25 where GSM900 BCCH set to ARFCN 26
Step Action Expected result
11
Switch UMTS 900 OFF : Check GSM
Perform GSM voice call
Call test at 2 locations, with drive test from GSM site
GSM Measurements without interferer: RxLev, RxQual, MS Tx power,
GSM UL RSSI
22
Switch UMTS900 ON : Check GSM
UMTS DL load = 85% OCNS (simulate max transmit power from UMTS)
Perform UMTS call, Perform GSM voice call
Call test at 2 locations, with drive test from GSM site
GSM Measurements with interferer: RxLev, RxQual, UE Tx power,
GSM UL RSSI
33
Switch GSM Cell OFF: Check UMTS
UMTS DL load = 85% OCNS (simulate max transmit power from UMTS)
Perform UMTS voice call
Call test at 2 location, with drive test from UMTS site
UMTS Measurements without interferer: Rscp, Ec/No, UE Tx power
UMTS UL RSSI
44
Switch GSM900 ON : Check UMTS
UMTS DL load = 95% OCNS (simulate max transmit power from UMTS)
Perform UMTS voice call
Call test at 2 location, with drive test from UMTS site
UMTS Measurements with interferer: Rscp, Ec/No, UE Tx power
UMTS UL RSSI
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UMTS900 Trial RF Test Report
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2.2.5 Test Result Co-location Scenario
2.2.5.1 Fix location Test result
2.2.5.1.1 GSM DL & UMTS UL& DL test Result
2.2.5.1.1.1 Location4 (Middle Cell)
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2.2.5.1.1.2 Location5 (Cell Edge)
2.2.5.1.2 GSM UL test Result: Spectrum Analyser
Due to unable to capture UMTS signal at LNA port of NodeB(signal is too low) , the measurement is
captured at spectrum analyser antenna port only.
2.2.5.1.2.1.1 UMTS Call, No GSM call at ARFCN 26
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2.2.5.1.2.1.2 UMTS Call, GSM call at ARFCN 26
2.2.5.2 STATIC LOCATION RESULT ANALYSIS
2.2.5.2.1 Downlink measurement at GSM
From RXQUAL/ RXLEV measurement, overall result of measurement where UMTS call is on shows that
“there is no impact to GSM DL quality”
2.2.5.2.2 Uplink measurement by spectrum analyser
The above result from spectrum analyser, show that “no spurious signal from UMTS to GSM signal
channel 26” : this measured at spectrum antenna port due to failure of capture UMTS Uplink signal
at LNA port of NodeB
2.2.5.2.3 Uplink/Downlink measurement at UMTS
UMTS uplink RSSI is measured by NodeB, but also broadcasts from NodeB to Ue. With UE trace tool,
the uplink RSSI can be read from NodeB broadcast channel.
� From different location measurements: Uplink RSSI doesn’t show different impact when call
with/without GSM
� Downlink measurement on UMTS quality didn’t show different impact when call with/without
GSM (Ec/Io, SIR to reveal UMTS quality)
From this trial scenario, we can’t see impact on these inter-systems interference even
without guard band between 2 systems for this co-location scenario. But please note that
antenna heigh separation is ~ 10 m. The impact might be there if UMTS and GSM antenna
separation distance is less. Isolation distance need to be compute and test with different
separation distance is suggestion for co-location scenario.
As well the test has few sampling measurement where we need more samples (with
different type of services) to evaluate the impact of inter-system interference. This
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limitation is due to time constraint. For further interference test, these constraints have to be
well organise to get more accuracy on the result
2.2.5.2.4 GSM Drive Test Result
GSM RXQUAL : No UMTS GSM RXQUAL: with UMTS
GSM RXLEV: No UMTS GSM RXLEV: with UMTS
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File name
UMTS900 Trial RF Test Report
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2.2.5.2.5 UMTS Drive Test Result
UMTS drive with PS UL384 to simulate maximum UE TX power for this scneario
UMTS Ec/Io : No GSM UMTS Ec/Io: with GSM
UMTS RSCP: No GSM UMTS RSCP: with GSM
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UMTS UeTXPWR: No GSM UMTS UeTXPWR: with GSM
2.2.5.3 DRIVE TEST RESULT ANALYSIS
From drive test, only downlink measurement is focus, area by area comparison to reveal any
interference impact when measure with/without inter-system on air
GSM measurement
GSM measurement on RXLEV/ RXQUAL show non-degradation when UMTS on/off.
UMTS measurement
UMTS measurement on signal quality Ec/Io and signal level RSCP shows no different when GSM is
on/off.
But UeTXPWR have error result due to PS UL384 is used during these test to simulate maximum Uplink
power. When the transfer stop the power decrease (power control), without continuous upload
transfer , the uplink UeTxpwr is inaccurate
Same as static measurement, the impact on inter-systems interference is unseen even
without guard band between 2 systems for this co-location scenario. But please note that
antenna height separation is ~ 10 m. The impact might be there if UMTS and GSM antenna
separation distance is less. Isolation distance need to be compute and test with different
separation distance is suggestion for co-location scenario.
As well the test has few sampling measurement where we need more samples (with
different type of services) to evaluate the impact of inter-system interference. This
limitation is due to time constraint. For further interference test, these constraints have to be
well organise to get more accuracy on the test
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UMTS900 Trial RF Test Report
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2.3 GSM UL Interference QoS Monitoring
From GSM performance monitoring tool, UL interference measurement indicator is available. This
indicator is help to evaluate uplink signal measure at BTS. Each interference band indicates range
of uplink signal level.
On date 16-17 Jan when Interference was performed, the interference measurement at BTS uplink
shows no different (no higher interference band during test)
Band1 =-110 to -105, Band2 = -105 to -100, Band3=-100 to -90, Band4 = -90 to <-47, Band5> -47
anjir_pasar3 IF_band1 IF_band2 IF_band3 IF_band4 IF_band5
01/01/2008 171 0 0 0 0
02/01/2008 178 0 0 0 0
03/01/2008 174 0 0 0 0
04/01/2008 167 0 0 0 0
05/01/2008 175 0 0 0 0
06/01/2008 172 0 0 0 0
07/01/2008 180 0 0 0 0
08/01/2008 178 0 0 0 0
09/01/2008 181 0 0 0 0
10/01/2008 175 0 0 0 0
11/01/2008 148 22 0 0 0
12/01/2008 170 0 0 0 0
13/01/2008 166 0 0 0 0
14/01/2008 171 0 0 0 0
15/01/2008 175 0 0 0 0
16/01/2008 167 0 0 0 0
17/01/2008 170 0 0 0 0
18/01/2008 160 0 0 0 0
19/01/2008 171 0 0 0 0
20/01/2008 157 11 0 0 0
anjir_serapat1 IF_band1 IF_band2 IF_band3 IF_band4 IF_band5
01/01/2008 187 0 0 0 0
02/01/2008 186 0 0 0 0
03/01/2008 187 0 0 0 0
04/01/2008 184 0 0 0 0
05/01/2008 181 2 0 0 0
06/01/2008 182 0 0 0 0
07/01/2008 175 0 2 0 0
08/01/2008 186 0 0 0 0
09/01/2008 183 0 0 0 0
10/01/2008 182 0 0 0 0
11/01/2008 177 2 0 0 0
12/01/2008 177 2 0 0 0
13/01/2008 178 1 0 0 0
14/01/2008 183 0 0 0 0
15/01/2008 133 0 0 0 0
16/01/2008 63 1 0 0 0
17/01/2008 66 0 0 0 0
18/01/2008 63 1 0 0 0
19/01/2008 65 0 0 0 0
20/01/2008 65 0 0 0 0
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File name
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3 UMTS900 /CDMA800 INTERFERENCE TEST
3.1 Test Purpose
The test purpose is to measure the impact of transmit spurious signal lelve from CDMA800 over UMTS receive signal
3.2 Test Requirement
Environment: Live Network � Collocated UMTS900 and CDMA800 sites are mandatory for Downlink test cases and suitable for
Uplink tests.
Equipments & tools:
� UMTS UE traces (X-CAL trace tool) � Spectrum analyser HP 8594E
3.3 Test Configuration
� Connect UMTS TX port to live Antenna at Siolatama site by reusing of GSM existing antenna � Measure RX signal after LNA port at UMTS nodeB ( Uplink band measurement) � Connect/ Disconnect TX band pass filter in CDMA Tx. Measure RX signal at NodeB
3.4 Test Result
From configuration, the impact only measured by Spectrum analyser, no UMTS or CDMA call
checking during this test.
� Spectrum measurement below shows that without TX band pass install at CDMA, the
spurious signal is very strong. At 890 MHz where UMTS UL band start , the spurious signal
measure is -79 dBm
� After installed Tx band pass at CDMA, the CDMA spurious signal disappeared from UMTS
LNA.
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Spectrum measurement after LNA at NodeB : without Tx band pass filter
Spectrum measurement after LNA at NodeB: with Tx band pass filter
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4 RF SERVICE COVERAGE TEST
The test purpose is to measure UMTS900 coverage with different service and configuration.
Site Configuration: All sector set P-CPICH to 35 dBm for coverage test
1. Anjir Pasar sector1 : Antenna Height ~54 m (10 m lower than GSM), with 2 degree tilt
2. Anjir Pasar sector3 : Antenna Height ~54 m (10 m lower than GSM), with 6 degree tilt
3. Anjir Serapat sector1 : Antenna Height ~44 m (20 m lower than GSM), with 6 degree tilt
RF service coverage test is distributed into 2 parts during this trial:
1. RF service between 2 coverage cell (soft handover). The test was performed by drive testing
from site Anjir Pasar sector3 to site Anjir Serapat sector1 in this case.
2. RF service till end of coverage cell. Drive testing at Anjir Pasar sector1 with different type of
service, including GSM BCCH measurement for comparison is performed for this case.
4.1 UMTS Service Coverage (soft handover)
Voice call is perform with drive testing between 2 sites. From coverage plot below, it shows that the
coverage is continuous between these NodeBs where 2 sites distance is about 9.2 KM. Anjir_Pasar
coverage is better than Anjir_Serapat due to higher antenna height configuration.
RSCP Ec/Io
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4.2 UMTS Service Coverage (end of cell)
The test purpose is to evaluate UMTS coverage compare with GSM coverage.
Due to different antenna configuration the comparison may be unfair to UMTS but this is to have an
idea of how UMTS coverage could be when reused of existing GSM network configuration.
4.2.1 Voice call service coverage
From below drive test result, it show that UMTS coverage end is about 7.8 KM, but at 7 Km the
quality start to degrade where this area the call should be handover to GSM in order to secure the
call. UMTS coverage for this case is guaranteed at 7 KM distance
RSCP Ec/Io
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4.2.2 GSM BCCH coverage
Due to GSM is activating BS DL power control, the best way to get GSM coverage by RXLEV
measurement at BCCH only, BCCH GSM is set to 43 dBm. GSM coverage is about 8.5 KM distance
where 7.5 Km the signal is start to degrade below -100 dBm
Recommended