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Company Confidential
RP12 WCDMARP12 WCDMARP12 WCDMARP12 WCDMA
Repeater Repeater Repeater Repeater
© 2010Company Confidential2
• RP12 WCDMA Repeater
• Applications
• System Design
• Commissioning
• Troubleshooting
AgendaAgendaAgendaAgenda
© 2010Company Confidential3
Product Overview
© 2010Company Confidential
Notifications to LED indicators:
For RP 12 GSM / CDMA For RP 12 GSM / CDMA there are 2 LEDs on each RP12-GSM and RP12-CDMA repeaters ,One is power LED and the other one is alarm LED.
For power LED, it glows when the input power is within 110/220V ± 20% ,and power switch is on.
For alarm LED, one can observe three colors, and each one has distinct meanings as listed below.
‧Green : Indicates normal operation.‧Orange: Indicates the AGC(Auto Gain Control) has activated .‧Red : Indicates the I/O power is too high to be depressed by the AGC and the
repeater is then saturated which might damage itself.
4
© 2010Company Confidential
Notifications to LED indicators:
For RP 12 DCS / WCDMA For RP 12 DCS / WCDMA there are 3 LEDs on each repeaters: one LED indicates the status of the repeater and the other 2 are for uplink/downlink power.
L1 : Status indicator , it should illuminate green when the repeater is working properly.
L2 : Downlink indicator , each green ,yellow or red light represent different alarm.
L3 : Uplink indicator , each green ,yellow or red light represent different alarm.
Please see as the following table
5
© 2010Company Confidential6
© 2010Company Confidential7
RP12WCDMA Repeater Specification
Product Overview
Electrical Specification
Specification Uplink Downlink
1920~1980MHz 2110~2170MHz
Maximum Gain≧60dB
Auto Gain Control≧20dB
Max. Output Power ≧15dBm ≧15dBm
Gain Flatness≦10dB(p-p) ≦10dB(p-p)
Adjacent Channel Rejection Ratio(ACRR) ≧20dBc/30KHZ@±HZ&±HZ
Noise Figure ≦6dB
Return Loss ≦- 10dB
Spurious Emission Mask Comply with 3GPP TS 25.106
Spurious Emission Comply with 3GPP TS 25.106/Category B
Group Delay ≦ 0.5μs
Modulation Accuracy ≦12.5%
Peak Code Domain Error ≦-35dB@Spreading Factor 256
AC adapter DC 9V/3A
2、、、、Mechanical specification
Dimensions(H*W*D) 240×135× 47mm
Weight ≦ 2kg
RF Connector N female
Impedance 50Ω
3、、、、Environmental specification
Operating Temperature -10~50℃
© 2010Company Confidential8
• RP12 WCDMA Repeater
• Applications
• System Design
• Commissioning
• Troubleshooting
• NOKIA 6680 Tech Mode
AgendaAgendaAgendaAgenda
© 2010Company Confidential9
– RP12WCDMA repeater is dedicated for indoor coverage, such as small offices, houses, basements, and public places.
– The amount of service antennas can be one to four; omni or panel.
– The donor antenna is recommended to be mounted at below 7th floor.
– Donor signal strength and quality must be good enough. (refer to the slide of “Selection of Donor Signal”)
Application
© 2010Company Confidential10
Installation - Wall Mounted
Application
© 2010Company Confidential11
Connection
Application
© 2010Company Confidential12
Heat Sink
Application
© 2010Company Confidential13
• RP12 WCDMA Repeater
• Applications
• System Design
• Commissioning
• Troubleshooting
• NOKIA 6680 Tech Mode
AgendaAgendaAgendaAgenda
© 2010Company Confidential14
Flow Chart of Site Survey
1. Use antennas with higher front-to-back ratio
2. Change location of antennas to enlarge their separation
1. Use antennas with higher front-to-back ratio
2. Change location of antennas to enlarge their separation
Negotiate with house owner to know the possible places to mount repeater,
donor & service antennas.
Negotiate with house owner to know the possible places to mount repeater,
donor & service antennas.
Check OK
Change location of donor antenna (Negotiate again?)Change location of donor
antenna (Negotiate again?)
N.G.
Isolation measurement (Donor and service antennas must be brought )
(Make a record)
Isolation measurement (Donor and service antennas must be brought )
(Make a record)
N.G.
Selection of donor signal (Make a record)Selection of donor
signal (Make a record) On-site measurement:(1).Walk test; (2).CQT
On-site measurement:(1).Walk test; (2).CQT
Site Survey OKSite Survey OK
Uplink Noise Floor Consideration(Make a record)
Uplink Noise Floor Consideration(Make a record)
N.G. Change location of donor antenna to cover it up (enlarge path loss)
Change location of donor antenna to cover it up (enlarge path loss)
Good
Good
Good
Good
GoodCheck OK
Check OK Reporting(Site Survey Report or Technical Proposal)
Reporting(Site Survey Report or Technical Proposal)
System Design
© 2010Company Confidential15
Since most of mobile phones nowadays haven’t connecting port of external antenna,
directly measured by a engineering-mode mobile phone is also acceptable.
ToolsToolsNokia-6680 Nokia-6630
SoftwareSoftwareField Test Display
Cell Track (Cell ID)
System Design
Selection of Donor Signal (WCDMA Tools)
© 2010Company Confidential16
dB 6 )N
E( - )
N
E(
MS_CPICH
0
C
AS_CPICH
0
C ≥
dB 70- ~ 60- )N
E( (RSSI) (RSCP)
AS_CPICH
0
C
rTotal_PoweAS_CPICH====++++====
dB 7- )N
E(
AS_CPICH
0
C ≥
WCDMA – Three Criteria as below descriptions & formulas
1. Signal Strength — RSCP of donor signal is better ranged from -60 to -70 dBm. (Depends)
2. Signal Quality — Ec/No of donor signal must be equal or larger than -7 dB.
3. Signal Stability — RSCP of donor signal must be equal or larger than neighbor signals by 6 dB.
Remark
AS_CPICH: Pilot Channel in Active Set (i.e., Serving Cell)
MS_CPICH: Pilot Channel in Monitor Set (i.e., Neighbor Cell)
Total_Power: Total power including CPICH, Control &
Traffic Channels for some frequency.
Selection of Donor Signal (WCDMA Tools)
System Design
© 2010Company Confidential17
Isolation Measurement
Isolation ≧≧≧≧ Rpt. Gain + 15 = 60 + 15 = 75 (dB)
75 dB is the minimum requirement for the isolation between antennas.
System Design
© 2010Company Confidential18
BTSBTS
A
50m
+12dBi -6dB Gain: 60 dB Noise Figure: 6 dB
A
RPRPA
25m
Noise Floor Consideration (Uplink)
Propagation Loss ≧≧≧≧ Rep. Gain + N.F. = 60 + 6 = 66 (dB)
43 dBm -56 -44 -50 dBm
Measured byNetMonotor
Measured by spectrum analyzer
-121 dBm for GSM/DCS-108 dBm for WCDMA
(Thermal Noise)
Trough a good design, noise floor will be well controlled.
Propagation Loss= 93 dB (≧≧≧≧ 66 dB)
System Design
© 2010Company Confidential19
R19
System Design
Technical Proposal / Site Survey Report (Example)
© 2010Company Confidential20
System Design
Technical Proposal / Site Survey Report (Example)
© 2010Company Confidential21
Technical Proposal / Site Survey Report (Example)
System Design
© 2010Company Confidential22
2006/07/20DateDateDateDate
3F Distribution MapNameNameNameName
Designer Remotek
Introduction:1. The donor antenna (ANT 01) is installed on the roof of the building (6F), pointing to the donor base station to get a clean signal( strength of the primary channel should be 6dB higher than the secondary channel).2. The equipment is installed on the wall inside the room.
3. The service antennas (ANT 02, ANT 03 and ANT 04) are installed under the ceiling of 3F.4. The outdoor cables are paved along with the wall and the indoor cables on the ceiling of the room.
3-way splitter
Omni-directional antenna
Remarks:
1/2"cable
Yagi antenna
28m
63m
6m
8m
25m
9m
5m
14m
ANT 02
ANT 03
ANT 04
PS 01
60m
25m10m
10mRepeater
To ANT01
Distribution Map (Example)
20m
10m
System Design
© 2010Company Confidential23
2006/07/12DatDatDatDateeee
Donor Antenna PictureNameNameNameName
Designer Remotek
To 3F Repeater
CH:72CID:54212Rxlev: -47dBmRxqual:0TA:2
CH:78Rxl:-56dBm
Orientation
Secondary Channel
Primary channel
40m
N
ANT01
: N170°
Distribution Map (Example)
To Rpt
System Design
© 2010Company Confidential24
2006/07/12DataDataDataData
Power Budget MapNameNameNameName
Designer
15.4dBm
ANT01- 6F
-47.7dBm
-47dBm
Repeater-3F
omni-driectional antenna
1/2"cable
Remarks:
3-way splitter
repeater
Yagi antenna
Introduction:1. Lable:ANT-----antenna PS-----splitter HUB-----repeater
2.Cable lossloss of 1/2"cable: 7dB/100mloss of 7/8"cable: 4dB/100m
ANT02 – 3F10m/0.7dB
10m/0.7dB
4.2dB/60m
ANT03 – 3F
ANT04 – 3F
1.8dB/25m
0.7dB/10m
5dBm
9.2 dBm7.4 dBm
8.5 dBm
PS01 - 3F
14.7 dBm
Remotek
Power Budget Map (Example)
System Design
7 6.3 0.8 dBm
0.1 dBm
-1
-3.4
© 2010Company Confidential25
• RP12 WCDMA Repeater
• Applications
• System Design
• Commissioning
• Troubleshooting
• NOKIA 6680 Tech Mode
AgendaAgendaAgendaAgenda
© 2010Company Confidential26
Flow Chart of Commissioning
1. Change ant. type2. Enlarge separation
between antennas
1. Change ant. type2. Enlarge separation
between antennas
Complete installation of repeater, cables, & antennas
(Power is still off)
Complete installation of repeater, cables, & antennas
(Power is still off)
Check OK
Check cables and connectors
Check cables and connectors
N.G.
Isolation measurementIsolation measurementN.G.
VSWR test for feeder system
VSWR test for feeder system
On-site measurement:(1).Walk test; (2).CQT
On-site measurement:(1).Walk test; (2).CQT
CompletedCompleted
Optimization:(1). BTS parameters(2). Repeater parameters
Optimization:(1). BTS parameters(2). Repeater parameters
Uplink Noise Floor Consideration
Uplink Noise Floor Consideration
N.G. 1. Adjust MGC or add external attenuator
2. Cover up donor ant. (enlarge path loss)
1. Adjust MGC or add external attenuator
2. Cover up donor ant. (enlarge path loss)
N.G.
Good
Good
Good
Good
Check OK
Good
Connect repeater to feeder system and then switch on repeater
Check OK
Check OK
Commissioning
© 2010Company Confidential27
Method DTF of site master
Site Master or Similar Equipment
Purpose Measure the cable length
Measure the cable quality
Commissioning
VSWR Test
© 2010Company Confidential28 n
o
Signal Generator Setting
Frequency: 920MHz (GSM)
1795MHz (DCS)
1940MHz (WCDMA)
Output Power: 15dBm ( or above)
Spectrum Analyzer
Setting
Central Frequency: Same
with signal generator
RBW=30 KHz
VBW=30 KHz
Isolation = Signal Generator Output Power – Spectrum Analyzer Measured Value
Exchange the signal generator and spectrum analyzer to confirm another path.
Donor Antnena
Coverage System
Spectrum Analyzer Signal Generator
Commissioning
Isolation Test
© 2010Company Confidential29
• RP12 WCDMA Repeater
• Applications
• System Design
• Commissioning
• Troubleshooting
• NOKIA 6680 Tech Mode
AgendaAgendaAgendaAgenda
© 2010Company Confidential30
Q1: Weak received level in the coverage area
Possible Reason Solution
(1). Input donor signal is too weak.
(2). Donor ant. is moved or damaged.
Or the cable connecting between donor
ant. and the repeater is possibly damaged.
(3). Some of cables or passive components
were damaged.
(4). Too many BCCH channels were
introduced.
(5). Repeater was already damaged.
. (1). Increase input signal level by re-orientate or re-locate
donor antenna. If possible, the alternative way is to
change the orientation of BTS antenna
(2). Visual check antenna or the cable. And then use Site Master (DTF function) to check to find out the damaged position.
(3). Same solution as previous item.
(4). Re-orientate or re-locate donor antenna in order to introduce one major BCCH (The major BCCH must be6 dB higher than its 1st strongest neighbor). To decide the orientation of donor ant., it is suggested to use a test mobile with a adaptor cable which isconnected to the donor ant.
(5). Contact with Remotek through our agent.
Troubleshooting
© 2010Company Confidential31
Possible Reason Troubleshooting(1). RxQual of donor signal is originally bad.
(2). Adjacent-channels or Co-channels were
introduced by the repeater system.
(3). Self-oscillation occurs.
(4). Too many BCCH channels were
introduced. (Frequent handover may
downgrade the signal quality).
(1). Re-orientate or re-locate donor ant. in order to find
another donor signal. The alternative way is to contact
the engineer of operator to fix the BTS problem.
(2). Re-orientate or re-locate donor ant. and try to increase
the ratio C/A or C/I (To let the major signal as stronger
as possible, and make the adjacent-channel or co-
channel signals as weaker as possible).
(3). Isolation is possibly insufficient, and the alarm of “AGC”
(Over AGC range) shall light. Try to increase the
separation between service ant. and donor ant. (It’s a
little difficult for complicated DAS indoors).
(4). Re-orientate or re-locate donor antenna in order to introduce one major BCCH (The major BCCH must be 6 dB higher than its 1st strongest neighbor).
Q2: Poor speech quality in the coverage area
Troubleshooting
© 2010Company Confidential32
Possible Reason Troubleshooting(1). RxQual of donor signal is originally bad.
(2). Adjacent-channels or Co-channels were
introduced by the repeater system.
(3). Self-oscillation occurs.
(1). Re-orientate or re-locate donor ant. in order to find
another donor signal. The alternative way is to contact
the engineer of operator to fix the BTS problem.
(2). Re-orientate or re-locate donor ant. and try to increase
the ratio C/A or C/I (To let the major signal as stronger
as possible, and make the adjacent-channel or co-
channel signals as weaker as possible).
(3). Isolation is possibly insufficient, and the alarm of “AGC”
(Over AGC range) shall light. Try to increase the
separation between service ant. and donor ant. (It’s a
little difficult for complicated DAS indoors).
Q3: Low Call Setup Successful Rate in the coverage area
Troubleshooting
© 2010Company Confidential33
Possible Reason Troubleshooting(1). Input donor signal is too weak.
(2). RxQual of donor signal is originally bad.
(3). Adjacent-channels or Co-channels were
introduced by the repeater system.
(4). Self-oscillation occurs.
(1). Increase input signal level by re-orientate or re-locate
donor antenna. If possible, the alternative way is to
change the orientation of BTS antenna
(2). Re-orientate or re-locate donor ant. in order to find
another donor signal. The alternative way is to contact
the engineer of operator to fix the BTS problem.
(3). Re-orientate or re-locate donor ant. and try to increase
the ratio C/A or C/I (To let the major signal as stronger
as possible, and make the adjacent-channel or co-
channel signals as weaker as possible).
(4). Isolation is possibly insufficient, and the alarm of “AGC”
(Over AGC range) shall light. Try to increase the
separation between service ant. and donor ant.
Q4: High Drop Call Rate in the coverage area
Troubleshooting
© 2010Company Confidential
THANK YOU