Alcatel Canada 24T28A01D22C 7390 24 GHz Co-Pol RBS User Manual BS Manual pages 17 to 30

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Document ID	157042
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Document Description	BS Manual pages 17 to 30
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Date Submitted	2001-06-28 00:00:00
Date Available	2001-08-24 00:00:00
Creation Date	2001-06-26 16:25:04
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Document Lastmod	2001-06-26 16:25:26
Document Title	BS Manual pages 17 to 30

Equipment overview
2.1 Overview of the A7390 system
The Alcatel 7390 is a multi-service broadband wireless local loop system designed to provide telecom
services to small and medium-sized enterprises.
Broad band WLL (Wireless Local Loop) system, Alcatel 7390 allows operators to offer rapid provision to a large number of client sites - of a comprehensive range of telephone and data transmission
services.
For cellular phone network operators, Alcatel 7390 offers the possibility of linking base stations to
base station controllers. This makes Alcatel 7390 an economical transmission solution, for the
implementation or extension of high traffic density areas coverage.
For mixed network operators (fixed and mobile), Alcatel 7390 enables to connect, with the same
system, fixed professional end user as well as base stations of cellular telephony.
Compagny A
SME
Independant profession
Compagny B
Independant profession
Compagny C
Compagny D
Figure 1 – A7390 System - Local point - multipoint service distribution -
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2.2 Composition of the A7390 system
An A7390 network cell consists of the following:
– a common base station designated 7390BS;
– and several terminal stations distributed across the user sites, and designated 7390TS.
"Radio Base Station" RBS
"Terminal Stations"
"Digital Base Station" DBS
nx7390TS
7390BS
Figure 2 – Base Station and Terminal Stations
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2.3 A7390 system specifications
2.3.1
Frequency bands used
25 GHz frequency band:
– CEPT T/R 13-02E European recommendation 24.5 - 26.5 GHz
26 GHz frequency band:
– MPT (Japan)
25.25 - 27 GHz
– Korea
24.25 - 24.59 ; 25.73 - 26.07 GHz
28 GHz frequency band:
– 27 GHz (LMCS - Canada)
27.35 - 28.35
– 28 GHz (CEPT)
28.0 - 28.5, 29.0 - 29.5
– 29 GHz (LMDS - USA)
27.5 - 28.35, 29.10 - 29.25
2.3.2
Radio transmission specifications (typical values)
The following table gives the main radio characteristics of the A7390 wireless system.
A downstream (BS to TS) carrier is combined with up to four upstream (TS to BS) carriers.
Downstream
Channel bandwidth
14 MHz
28 MHz
Occupied bandwidth
13.63 MHz
27.25 MHz
Roll-off factor
35%
35%
Modulation
QPSK
QPSK
Gross bit rate
20.19 Mbit/s
40.37 Mbit/s
Inner Code
Convol. 7/8 (k=7)
Convol.7/8 (k=7)
Interleaving
depth 12
depth 12
Outer Code
Reed-Solomon
(204,188,8)
Reed-Solomon
(204,188,8)
Bit rate before coding
16.19 Mbit/s
32.38 Mbit/s
Radio
25 GHz
28 GHz
25 GHz
28 GHz
RBS output power (antenna port)
17 dBm
17 dBm
17 dBm
17 dBm
Transmit antenna gain
(case of standard 90° antenna)
15 dB
15 dB
15 dB
15 dB
Receive antenna gain (with radome)
35 dB
34.5 dB
35 dB
34.5 dB
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Upstream
Channel bandwidth
3.5 MHz
7 MHz
Occupied bandwidth
3.36 MHz
6.72 MHz
Roll-off factor
25%
25%
Modulation
D-QPSK
D-QPSK
Gross bit rate
5.38 Mbit/s
10.75 Mbit/s
Outer Code
Reed-Solomon (63,53,5)
Reed-Solomon (63,53,5)
Bit rate before coding
4.19 Mbit/s
8.38 Mbit/s
Radio
25 GHz
28 GHz
25 GHz
28 GHz
TS output power (antenna port)
14 dBm
14 dBm
14 dBm
14 dBm
Transmit antenna gain
35 dB
34.5 dB
35 dB
34.5 dB
Receive antenna gain (with radome)
15 dB
15 dB
15 dB
15 dB
2.3.3
Capacity
The system capacity depends on the traffic mix between data services (transported on ATM cells) and
leasedlines or telephony services (transported on TDM circuits).
It also depends on the channeling and the number of upstream channels.
Figures are given in the following tables for three mix examples : minimum, medium and maximum
circuit capacity but any intermediate mix is possible.
Downlink: 28 MHz
Uplink: 1 x 7 MHz
Trafic MIX: circuit capacity
Minimum
Medium
Maximum
60
120
ATM uplink capacity (cells/s)
18.823
9.412
ATM downlink capacity (cells/
s)
75.512
66.530
57.399
Nb of circuits: 64 kbit/s
Downlink : 28 MHz
Uplink : 2 x 7 MHz
Trafic MIX: circuit capacity
Minimum
Medium
Maximum
120
240
ATM uplink capacity (cells/s)
37.647
18.823
ATM downlink capacity (cells/
s)
75.512
57.548
39.286
Nb of circuits: 64 kbit/s
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Downlink : 28 MHz
Uplink : 3 x 7 MHz
Trafic MIX: circuit capacity
Minimum
Medium
Maximum
180
360
ATM uplink capacity (cells/s)
56.471
28.235
ATM downlink capacity (cells/
s)
75.512
48.566
21.173
Nb of circuits: 64 kbit/s
Downlink : 28 MHz
Uplink : 4 x 7 MHz
Trafic MIX: circuit capacity
Minimum
Medium
Maximum
240
480
ATM uplink capacity (cells/s)
75.294
37.647
ATM downlink capacity (cells/
s)
75.512
39.585
3.084
Nb of circuits: 64 kbit/s
Downlink: 14 MHz
Uplink: 1 x 3.5 MHz
Trafic MIX: circuit capacity
Minimum
Medium
Maximum
30
60
ATM uplink capacity (cells/s)
9.412
4.706
ATM downlink capacity (cells/
s)
38.047
33.519
28.990
Nb of circuits: 64 kbit/s
Downlink : 14 MHz
Uplink : 2 x 3.5 MHz
Trafic MIX: circuit capacity
Minimum
Medium
Maximum
60
120
ATM uplink capacity (cells/s)
18.824
9.412
ATM downlink capacity (cells/
s)
38.047
28.990
19.934
Nb of circuits: 64 kbit/s
Downlink : 14 MHz
Uplink : 3 x 3.5 MHz
Trafic MIX: circuit capacity
Minimum
Medium
Maximum
90
180
ATM uplink capacity (cells/s)
28.235
14.118
ATM downlink capacity (cells/
s)
38.047
24.462
10.877
Nb of circuits: 64 kbit/s
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Downlink : 14 MHz
Uplink : 4 x 3.5 MHz
Trafic MIX: circuit capacity
Minimum
Medium
Maximum
120
240
ATM uplink capacity (cells/s)
37.647
18.824
ATM downlink capacity (cells/
s)
38.047
19.934
1.821
Nb of circuits: 64 kbit/s
2.4 Simplified description of the Base Station (7390BS)
The A7390 system Base Station (7390BS) consists of the following main elements:
– one or more (up to 4) external transceivers, comprising the radio and the antenna part and designated "RBS" (Radio Base Station);
– one modem rack, including the power supply unit and interfaces; this is the "indoor" part and designated DBS (Digital Base Station);
– a cable linking the RBS and the DBS ("RBS/DBS link");
– a network management and configuration station (7390LT), based on the use of a PC with appropriate software.
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2.5 Examples of configuration of the Base Station (7390BS)
Number of sectors
Configuration
1+0
Configuration
(redundancy)
1+1
Figure 3 – Examples of configuration of the 7390BS
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2.6 Technical specifications of the Base Station (7390BS)
2.6.1
RBS specifications
Designation
Description
Standards
Observations
Mechanical specifications of the RBS assembly (antenna + pole mounting)
HxLxD
644(mm)x221(mm)x720(mm)
D taken from axial tube
(diameter = 50 to
114mm) cf. diagram in
§ 3 Installation
Weight
15 kg
Physical interfaces: RBS/DBS indoor-outdoor cable
Connector type
N/female
weatherproof
Medium
50Ω coaxial cable
equipment for premises not sheltered from
the weather
Environmental specifications
RBS Classification
ETS 300 019-2-4
IEC 721 3-4/
classes 4K2-4Z14Z5-4Z7-4B14C2-4S2-4M5
Operating
temperature
-33°C to + 55°C
Relative humidity
at 30°C
100%
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2.6.2
DBS specifications
Designation
Description
Standards
Observations
Mechanical specifications: Rack-mounted DBS assembly standard 19"
HxLxD
1250(mm)x600(mm)x600(mm)
Weight
<135 kg (including 85 kg for
empty rack)
cf. diagram in
§ 3 Installation
ETS 300-119
Mechanical specifications: DBS shelf without rack
HxLxD
844.55(mm)x482.6(mm)x540(mm)
ETS 300-119
Weight
< 50 kg
19-inch cf. diagram
in § 3 Installation
Power supply and consumption
Primary voltage
range
36 V to 60 V
Maximum consumption
750 W
Protection
48 V rated voltage
including 8 RBS
ETS 300-132
overvoltage, short-circuit
(40 A fuse), polarity inversion,
thermal protection
(ventilation failure)
Note: Power supplies are floating level voltages; the ground cable can be connected to + 48V or - 48V
according to the country standards.
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Designation
Description
Standards
Observations
Physical interfaces: ATM network interface optical
Connector type
SC/PC socket
ITU-T I.432.2/§3.1
1300 nm
1 for each direction
Media
Single-mode Fiber
(SMF; 9/125 µm)
ITU-T G.652
1300 nm
1 for each direction
Environment
Laser product Class 1
IEC 825
Bit rate
Nominal
Timing
155.520 Mbps
± 20 ppm
ITU-T I.432.2/§3.1
Line coding
NRZ
Jitter
Refer to standard masks
ITU-T G.958
Signalling
UNI 4.0
ATM Forum
Af-sig-0061.000
Free run mode, i.e. under
synchronization source
fault conditions
Physical interfaces: E3 G703 (34 Mbps) (75 Ω)
Connector type
75Ω interface
1,6/5,6
75Ω interface
Coaxial cable
Media
ITU-T G.703/§8.3
Environment
Safety
ETSI ETS 300418/§4.3, 4.4
EMC/EMI
ETSI ETS 300418/§4.5
Bit rate
ITU-T G.703/§8.1
Nominal
Tolerance
Line coding
Jitter
± 20 ppm
HDB3
Refer to standard masks
Input tolerated jitter
ITU-T G.823/§3
Output residual jitter
ITU-T G.823/§2
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34.368 Mbps
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Designation
Description
Standards
Observations
Physical interfaces: E1, TDM circuit interface (75/120 Ω)
Connector type
DBS Standard
Sub-D/37 pins/fem.
8 connectors; 8 TDM
interfaces per connector
75Ω interface
BNC or 1,6/5,6
1 for each direction
120Ω interface
STP specific connector
1 for each direction
Media
ITU-T G.703/§6.3
75Ω interface
Coaxial cable
1 pair for each direction
120Ω interface
STP
1 pair for each direction
Environment
Safety
ETSI ETS 300-418/
§4.3, 4.4
EMC/EMI
ETSI ETS 300-418/
§4.5
Bit rate
Nominal
2.048 Mbps
Tolerance
± 50 ppm
Line coding
Jitter
Synchronous stream
ITU-T G.703/§6.1
Under synchronization
source fault conditions
HDB3
Refer to standard masks
Input tolerated jitter
ITU-T G.823/§3
Output residual jitter
ITU-T G.823/§2
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Designation
Description
Standards
Observations
Physical interfaces: T1 , TDM circuit interface (100 Ω)
Connector type
100Ω interface
Sub-D 37 points
Media
100Ω interface
Shielded twisted Pair
ANSI T1.403
1.544 Mbit/s
ANSI T1.102
± 32 ppm
ANSI T1.403
Bit rate
Nominal
Tolerance
Line coding
Jitter
AMI or B8ZS
Software configurable
Refer to standard masks
Input tolerated jitter
ANSI T1.102
Output residual jitter
ANSI T1.102
Environmental specifications
DBS Classification
ETS 300 019-2-3 IEC
721 3-3/classes 3K53Z2-3Z4-3B1-3C23S2-3M1
Operating
temperature
-5°C to +55°C
Relative humidity
at 30°C
93%
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2.6.3
Common characteristics of the RBS and DBS
Designation
Description
Standards
Observations
Transport
Public transport: class 2.3
ETS 300 019-2-2 IEC
721-3-2 classes 2K4,
2B2, 2C2, 2S2, 2M3
Ambient temperature
-40°C to+ 70°C
Relative humidity at
55°C
95%
Storage
Class 1.2
ETS 300 019-2-1 IEC
721-3-1 classes 1K4,
1Z2, 1Z3, 1Z5, 1B2,
1C2, 1S3, 1M2
storage premises
sheltered from the
weather, without airconditioning
Ambient temperature
-40°C to + 70°C
IEC 721-3-1/class 1K5
Relative humidity at
30°C
Condensation
100%
90 to 100 %
Logistics
2.7 Equipment power consumption
2.7.1
RBS
The typical power consumption of the RBS is 31 W (RBS cube) / 25 W (RBS flat).
2.7.2
DBS
DBS configuration type
Typical power consumption
basic configuration (1 sector, 1+0)
130 W
per additional sector
100 W
1+1 redundancy (per sector)
100 W
ANT board (per board)
25 W
TNT board (per board)
30 W
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