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公司简介INTRODUCTION
Road Coverage
SHANGHAI XINMIN TELECOM TECHNOLOGIES CO.,LTD.SHANGHAI XINMIN TELECOM TECHNOLOGIES CO.,LTD.
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Recommended Solutions for Road Coverage
Solutions for Road Coverage:
RF Repea ter
Frequency Shift Repea te r
Fiber Optic Repeater
Advantages:
Cost-Effective Solution
Effective ly Utilize the Redundant Capacity of BTS
Easy for Deployment and Maintenance
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Road Coverage by BTS
Not High Enough Output Power
(2W to 5W)
Need to deploy the Micro BTS
a long the Main Road
High Cost
Highway or
Speedway
Macro BTS
MicroBTS
MicroBTS
MicroBTS
Micro BTS for Road Coverage:
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Road Coverage by Repeater
High Output Power (Tota l 20W)
as same as Macro BTS
Cos t-e ffective
Macro BTS
RF Repeater for Road Coverage:
Highway or
Speedway
F1
F1
F2
F2
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Road Coverage by Repeater
High Output Power (Tota l 20W of
Remote Unit) a s same as Macro
BTS
Cos t-e ffective
Highway or
Speedway
Macro BTSFSR for Road Coverage: F12
F11
F11
F11
F13
Donor X1
Remote X1-2
Remote X1-1
F22
F21
MacroBTS
F21 Donor
X2 Remote X2-1
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Road Coverage by Repeater
If the Optica l Fiber layout is
ava ilable , it’s ve ry easy to deploy
FOR for Road Coverage
High Output Power (Tota l 20W)
as same as Macro BTS
The e ffect of the FOR coverage
is jus t the same as the BTS
coverage
The max. optic link dis tance
be tween donor and remote is 20km
Cost-e ffective
FOR for Road Coverage:
Chain configurationHighway
or Speedwa
y
MacroBTS
F1Donor
F1Remote 3
F1
Remote1
F1 Remote 2
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Road Coverage by Repeater
FOR for Road Coverage:
Star configurationHighway
or Speedway
BTS
F1
Donor
F1Remote 3
F1Remote1
F1 Remote 2
If the Optica l Fiber layout is
ava ilable , it’s ve ry easy to deploy
FOR for Road Coverage
High Output Power (Tota l 20W)
as same as Macro BTS
The e ffect of the FOR coverage
is jus t the same as the BTS
coverage
The max. optic link dis tance
be tween donor and remote is 20km
Cost-e ffective
Page 8
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Typical Project
Outdoor RF Repeater — Speedway Coverage
Weak signal area
Problems:Because of the shield of the mountains,obviously there is weak signal area andblind area along the speedway.
Solution:Install outdoor repeater to amplify signalreceived from BTS and cover the weaksignal area and blind area by use ofdirectional antenna (mobile antenna) toenlarge BTS coverage area.
Rx_level before installation
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Typical Project
Notices in integration:Outdoor repeater with high output power requiredhigh isolation to avoid self-excitation. Choose corner reflector antenna as mobile antenna andshort backfire antenna as donor antenna becauseof their good F/B to meet isolation requirement.Choose the best antenna location to make use ofhouse’s obstruction to increase the isolation between donor and mobile antenna.
Donor antenna—short backfire
antenna
Mobile antenna—corner reflector
antenna
mount ai n
2
Shanggang
t own 1
N
Repeat er 2: near ShanggangDonor ant enna: 0. 9m shor t backf i r e ant enna Di r ect i on: 45 degr ees Hei ght : 5mMobi l e ant enna: Cor ner Ref l ect or ant enna Di r ect i on: 165 degr ees Hei ght : 16mDonor si gnal : GSM- - - BCCH: 99( - 76dBm) CDMA- - PN 294( - 78dBm)
Repeat er 1: near bel l - bui l di ngDonor ant enna: 0. 9m shor t backf i r e ant enna Di r ect i on: 135 degr ees Hei ght : 8mMobi l e ant enna: Cor ner Ref l ect or ant enna Di r ect i on: 65 degr ee Hei ght : 15mDonor si gnal : GSM- - - BCCH: 111( - 77dBm) CDMA- - PN 411( - 80dBm)
No
Pr oj ectName
Ti me
Road Cover age f or Chi na Uni comCover age f r om t own 1 t o 2
2002/ 5/ 28
Desi gn
Shanghai Xi nmi n
Pol e
Mobi l e ant enna
Donor ant enna
t own 2
mount ai n
1Mumi an
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Typical Project
After installation
Equipment list— Guangzhou Speedway Coverage
Name Type
Repea ter Band Se lective Repeater
Output power: 40, 43dBm
Donor antenna short backfire antennaGain: 14dBi
Mobile antenna corner re flector antennaGain: 16dBi
Effect:After installation, the Rx_level ofthis area improved obviously and theweak signal area disappeared.
Rx_level after installation
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Outdoor Repeater—Road coverage
Problems:The target coverage area is a mountainous area in the north Philippines.It is requiredfor road coverage with 2km radius inorder to make call even on the edge ofcoverage area.
Solution:The donor antenna receives signal fromBTS which is amplified by the outdoorrepeater to cover the service area bydirectional antenna.
A
750m
C
D
B
X IN M IN
M ountain
N ote:
A: T ow e r , w ith 30m he ight where to ins ta ll re peater
B: Mounta in, w hic h is a little highe r tha n BTS tow er with flour is hing plants.
Typical Project
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Notices in integration:
Choose panel antenna as mobile antenna as well asparaboloid grid antenna as donor antenna with highgain and good F/B. Because antenna with high gainwill help to get maximum donor signal and withgood F/B will satisfy the requirement of isolation.
If it is necessary and possible, the repeater can be installed on the top of the tower according to the target coverage area.
C
AC 220V
B: Donor ANT He ight 5m, orie nta tion 140
D: S ite Room
DESIGN
CHECKED
APPR.
DRAWN
ISSUE
XINMIN
LINLIN
YING QI
1.0 02/20/03
02/20/03
02/20/03
02/20/03
30m
7/8" feeder
C: Re pe a te r
Note:
Repeater
1.2m
A
OUT BUILDING SOLUTION
SCOLE:NTS
PHILIPPINES
XIN MIN
SHEET:1/1 BELONGS TO: DIGITEL GSM
B
5m
D
A: Mobile Ante nna(mobile ANT)
He ight 30m, orie nta tion 260
Typical Project
Installation Diagram
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Typical Project
Effect:After installation of outdoor repeater, the Rx_level of this area improved obviouslyand weak signal area disappeared.
Equipment list–Philippines road coverage
Name Type
Repeater Band Se lective Repea ter
Output power: 40dBm
Donor antenna paraboloid grid antennaGain: 24dBi
Mobile antenna panel antennaGain: 18dBi
Page 14
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Conclusion
Comparison Micro BTS RF Repeater FSR FOR
Output Power 2W to 5W Tota l 20W Tota l 20W Tota l 20W
Ins ta lla tion Difficult Easy Easy Easy
Effect --
Little worse than BTS
depend on ins ta lla tion and commiss ioning
The same as BTS depend on ins ta lla tion and commiss ioning
The same as BTS
Cos tHigh
3ALow
AMid
2A
Low if Optica l Fiber has deployed a lready
1.5A
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SHANGHAI XINMIN TELECOM TECHNOLOGIES CO., LTD