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The information in this documentation is subject to change without notice and describes only theproduct defined in the introduction of this documentation. This documentation is intended for theuse of Nokia's customers only for the purposes of the agreement under which the documentationis submitted, and no part of it may be reproduced or transmitted in any form or means without the
prior written permission of Nokia. The documentation has been prepared to be used byprofessional and properly trained personnel, and the customer assumes full responsibility whenusing it. Nokia welcomes customer comments as part of the process of continuous developmentand improvement of the documentation.
The information or statements given in this documentation concerning the suitability, capacity, orperformance of the mentioned hardware or software products cannot be considered binding butshall be defined in the agreement made between Nokia and the customer. However, Nokia hasmade all reasonable efforts to ensure that the instructions contained in the documentation areadequate and free of material errors and omissions. Nokia will, if necessary, explain issueswhich may not be covered by the documentation.
Nokia's liability for any errors in the documentation is limited to the documentary correction oferrors. NOKIA WILL NOT BE RESPONSIBLE IN ANY EVENT FOR ERRORS IN THISDOCUMENTATION OR FOR ANY DAMAGES, INCIDENTAL OR CONSEQUENTIAL(INCLUDING MONETARY LOSSES), that might arise from the use of this documentation or the
information in it.
This documentation and the product it describes are considered protected by copyrightaccording to the applicable laws.
NOKIA logo is a registered trademark of Nokia Corporation.
Other product names mentioned in this documentation may be trademarks of their respectivecompanies, and they are mentioned for identification purposes only.
Copyright Nokia Corporation 2005. All rights reserved.
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Contents
Contents 3
1 CE marking 5
2 Environmental information 72.1 Eco-declaration for Nokia MetroSite 50 Base Station 72.1.1 Introduction 72.1.2 Product information/description 72.1.3 Company information 82.1.4 Product description 102.1.5 Nokia Equipment Take Back Service 122.2 RoHS statement 122.3 Product collection and disposal within the European Union 13
3 Nokia MetroSite 50 Base Station 153.1 Applications 16
4 Operation 174.1 RAN interfaces 174.2 BTS architecture 184.3 Internal BTS signalling 21
5 Transmission 235.1 Transmission interfaces 235.2 Network topologies 24
6 Related software 276.1 Local management 276.2 Configuration management 286.3 Software updates 296.4 External alarms and controls 29
7 Construction 317.1 Cabinet construction 317.2 Cabinet dimensions and weights 327.3 BTS locking 34
8 Units 37
8.1 Unit availability 378.2 RF units 408.3 Baseband units 408.4 Transmission units 418.5 Power supply unit 438.6 Optional units 43
9 BTS technical data 459.1 Operating conditions 459.2 Configurations 48
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9.3 Electrical properties 489.4 BTS power consumption 499.5 RF specifications 509.6 Manager hardware and software requirements 51
9.7 Compliance on EMC, RF and Safety 529.8 Iub accuracy requirement 54
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1 CE marking
Figure 1. CE marking
Hereby, Nokia Corporation declares that this Nokia Base Station is in compliance
with the essential requirements and other relevant provisions of Directive: 1999/
5/EC.
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2 Environmental information2.1 Eco-declaration for Nokia MetroSite 50 Base
Station
2.1.1 Introduction
The purpose of this declaration is to provide Nokia customers with
environmentally relevant information about Nokia products. It shall not be
interpreted as a specification, modification or amendment to the specification, or
additional or other warranty of any kind. In case of discrepancy between this
declaration and the Product specification or terms and conditions of the valid
supply agreement between Nokia and the customer, the supply agreement and
Product specification shall always prevail over this declaration.
The contents of this declaration are provided on "as is" and "as available" basis.Nokia does not warrant that this declaration is exclusive on all material
information of the defined Nokia product. Nokia reserves the right to revise this
declaration or withdraw access to this at any time.
2.1.2 Product information/description
The Nokia Metrosite 50 Base Station includes 13 units and a WCCF cabinet. This
declaration is for the 1+1+1 ROC configuration This eco-declaration covers the
following units:
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Table 1. MetroSite 50 Base Station units covered in the eco-declaration
Code Item Product
description
Quantity
470325A WCCF MetroSite 50 cabi-
net
1
469918A WAFG Antenna filter 1
468156A WAMA Application man-
ager
1
469011A WMCM Summing and
clock
1
469928A WMPC Linear power am-
plifier
1
469876A WTRD Transmitter and
Receiver
2
469550A WSPC Signal processor
unit
2
469929A WPSG Power supply AC/
DC
1
T32107.01 AXUA AXU ATM multi-
plex unit
1
T32107.02 IFUA IFU8P1 (symm) 1
469975A WUCA Unit cables 1
469978A VMPB Pole mounting kit 1
2.1.3 Company information
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Environmental policy of Nokia corporation
Table 2. Environmental policy of Nokia corporation
Basic principles
1. A successful business requires a solid, product life cycle based environmental
performance.
2. The Nokia Way means an active, open and ethically sound approach to
environmental protection.
3. The objective of Nokia's environmental policy is sustainable development in
accordance with the ICC (International Chamber of Commerce) business charter.
Implementation
1. The environmental policy is an integral part of general management process.
2. Line organisations plan and implement the action programs by using environmentalspecialists and the best available technology.
3. The action programs are based on a thorough understanding of the environmental
impacts of a product throughout its life cycle.
4. Minimising the environmental impacts requires continuous efforts and follow-up of
the results; it is thereby a part of the total improvement activities.
Design for environment
Our approach to product design is to make our products more environmentally
efficient through our Design for Environment program. This program is based on
an analysis of the life cycle of the product from the extraction of materials to
product disposal at end of life. Design for Environment is integrated into the
Product Creation Process (PCP) and thus is an integral part of day-to-day
decision-making. Nokia also has a network of specialists who support product
designers in taking environmental issues into account.
ISO 14001
Nokia uses Environmental Management Systems (EMS) as a management
method for controlling and improving the environmental performance of our own
operations. As of 2001 Nokia Corporation, Networks had a global certified EMS
covering all our production sites, including joint ventures. (ISO14001: 1996
certificate number EMS 72988 by British Standards Institute (BSI).)
Suppliers
Environmental issues are an integral part of supplier management and contractual
agreements. Nokia has a set of comprehensive Supplier Requirements where
environmental issues are included. To ensure compliance trained Nokia personnel
conduct regular supplier assessments.
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Environmental reporting
Nokia publishes environmental reports with a focus on our policy and strategy for
reducing adverse environmental impacts and the environmental aspects of our
products and operations as well as for implementing policy and strategy.
The latest report can be found on the Nokia Internet pages in the Environment
section.
2.1.4 Product description
Power consumption
The power consumption depends on input voltage, ambient temperature andtraffic load. The following values are calculated for an operational configuration
1+1+1 ROC and are measured without a heater, a radio relay and masthead
amplifiers (MHA).
Table 3. Power consumption
AC 650 W
DC 590 W
Materials
Nokia has compiled a Nokia Substance List (NSL) based on regulatory
requirements and reasonable facts. The NSL identifies substances that Nokia has
banned, restricted or targeted for reduction in products/components delivered to
Nokia. It is divided into two sections: Restricted Substances and Monitored
Substances. Download the Nokia Substance List from Nokia the Internet pages in
the Materials Use section.
Substance categories
The Restricted Substances section identifies substances that are banned or
restricted in applications (solders, pastes, etc.), parts, subassemblies and
accessories) related to Nokia products and/or packaging. The Monitored
Substances list identifies substances that Nokia expects, based on reasonable
facts, to be reduced or phased out from Nokia products and/or packaging, subject
to the availability of technically, environmentally and economically sound
alternatives. Suppliers are strongly advised to investigate suitable alternative
solutions.
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The product complies with the requirements of the Nokia Substance List.
The main material of mechanical parts is aluminium alloy.
Batteries
Batteries used in Nokia products are in conformance with the EU directives 91/
157/EEC (hazardous substances) 98/101/EC (amendment) and 93/86/EEC
(marking requirements).
Noise
MetroSite 50 Base Station acoustic noise values are the following according
ambient temperature:
Table 4. Acoustic noise values
Temperature Sound Power
(Lwa)
+15 C 45 dB (A)
+23 C 52 dB (A)
+50 C 65 dB (A)
Product packaging
All the MetroSite 50 Base Station packaging materials are compliant with EU
directive 94/62/EC for Packaging and Packaging Waste. Packaging materials are
marked according to CR 14311 recommendations in order to ensure the
identification of the material in the post-use chain.
The transportation packagings include
. Plug-in unit package made of corrugated cardboard
. Container made of corrugated cardboard
. Pallets made of wood (pine or spruce)
. Straps and antistatic bags made of polyethene (PE)
. Lower and upper cushion made of expanded polyethene (EPE)
In addition, the packaging may include dehydrant bags, ID-stickers, tape and
staples.
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End of life
Nokia supplies information supporting environmentally sound, safe and
economical handling/recycling of Nokia products to recycle service providers.
The separate Material Declaration document includes information on the main
material fractions and substances that may require special handling in the end-of-
life process.
2.1.5 Nokia Equipment Take Back Service
Nokia offers its customers Nokia Equipment Take Back Service as a complete
solution for removal, collection and recycling covering the end-to-end workflow
of the end-of-lifecycle process. Customers may elect to perform one or more of
the services themselves and procure others from Nokia, as needed to meet their
obligations. The Service pricing is scaleable according to the Service Modulesselected.
2.2 RoHS statement
Nokia MetroSite 50 BTS will comply with the European Union RoHS Directive
2002/95/ EC on the restriction of the use of certain hazardous substances in
electrical and electronic equipment 1 July 2006 at the latest. The directive applies
to the use of lead, mercury, cadmium, hexavalent chromium, polybrominated
biphenyls (PBB), and polybrominated diphenyl ethers (PBDE) in electrical andelectronic equipment put on the market after 1 July 2006.
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2.3 Product collection and disposal within theEuropean Union
Figure 2. Product collection and disposal within the European Union
Product collection and disposal within the European Union
Do not dispose of theproduct as unsortedmunicipal waste. Thecrossed-out wheeledbin means that at theend of the productslife it must be takento separate collection.
Note: this is applicable onlywithin the European Union(see WEEE Directive 2002/96/EC)
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3 Nokia MetroSite 50 Base StationNokia MetroSite 50 BTS provides optimised coverage for rural, suburban and
roadside areas as well as in-fill for traffic hot-spots. Simple site concept and
versatile installation options for both indoor and outdoor locations ease the site
acquisition and reduce the need for site planning and site lease costs.
Nokia MetroSite 50 BTS is an up to 3-sectored BTS, which supports thefollowing configurations: 1+1+1 ROC, 1+1 ROC, 2-Omni and 1-Omni.
Nokia MetroSite 50 BTS offers the operators the possibility to save in site and
network building costs.
Nokia MetroSite 50 BTS offers a macro 3 sector BTS coverage with micro BTS
size. Sectorised uplink improves the uplink budget by 5 dB, which means a 50%
increase in coverage compared to Omni BTSs. This means that fewer BTS sites
are required, thus saving network building costs.
The possibility to locate the BTS close to antennas to minimize the feeder lossesimproves both uplink and downlink performance. The support for Masthead
Amplifiers (MHAs) minimize the feeder losses, further improving the BTS's
performance in uplink.
Pole and wall mounting allow easy and fast installation without any special
constructions. This saves site costs.
Vertical and horizontal installation capability optimises the installation to a small
space. Small size also allows for hidden installations in public locations like
parks, for example.
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3.1 Applications
Suburban area BTS site
Nokia MetroSite 50 BTS 1+1+1 ROC configuration is optimal for low population
rural and suburban areas. It enables building a cost-optimised site solution which
is fast and easy to install, yet it offers a wide coverage comparable to a macro-
sized BTS. Due to the BTS's small size and unobtrusive appearance it is possible
to utilise a wide variety of installation locations.
Roadside location BTS site
The building of cost-effective roadside coverage is one obvious application area
for Nokia MetroSite 50 BTS. To accommodate roadside coverage, a Nokia
MetroSite 50 BTS cabinet with 1+1 ROC configuration can be installed on a pole
by the road with the antennas directed to follow the road.
Infill or hotspot site
Nokia MetroSite 50 BTS provides in-fill coverage for 3G network. Typically,
infill coverage is needed when there are gaps in the network, when there is a need
to build sites in dense urban areas, or when an extremely fast network rollout is
needed. For example, a 2 Omni configuration installed on a rooftop site provides
the required additional coverage.
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4 Operation4.1 RAN interfaces
WCDMA technology is used on the air interface to build 3rd generation wireless
communication systems. Nokia provides a 3GPP compliant system for thistechnology, see the figure below. In this system, the Radio Access Network
(RAN) forms an integrated entity which includes Base Stations (BTSs), Radio
Network Controller (RNC), and Cellular Transmission (CT).
Figure 3. WCDMA and GSM/EDGE network
BSS+RAN
GSM/EDGEBTS
BSC
WCDMABTS RNC
(WCDMA)
MSC HLR
MGW
IN Service Control Point
Landline NW(PSTN/ISDN)Landline NW
(PSTN/ISDN)
GSM/EDGEmobile
GSM/WCDMAmobile
Base StationController (GSM)
Abis Network Subsystem
(GSM)
Internet(TCP/IP)InternetTCP/IP
Packet Subsystem
SGSN
GGSN
MSCHLR
A
A
lub lu
SIMcard
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Nokia has planned its whole WCDMA infrastructure with the existing mobile
networks in mind. This means that co-siting with the existing GSM/EDGE
equipment and utilisation of the existing infrastructure have been the key drivers
in standardisation and BTS design. Special attention has been paid to areas like
ATM/IP transmission, antenna system implementation, power systems, fast roll-
out and utilisation of existing BTS sites.
4.2 BTS architecture
In the uplink path, the BTS receives signals from the UE; in the downlink path,
the BTS sends signals to the UE. Uplink and downlink signals travel through the
air interface (Uu) on different frequencies, the higher frequency carrying
downlink signals.
Uplink path
The antenna picks up a signal from the UE through the air interface. The antenna
passes the signal to the optional MHA and Bias-T units and further on to the
antenna connectors at the BTS cabinet bottom. The signal then goes through the
Antenna Filter Unit (WAF) to the Transmitter and Receiver Unit (WTR).
The WTR unit converts the received signal to a digital format and sends it to the
baseband unit for further processing via Summing and Clock Unit (WMC) to the
allocated Signal Processing Unit (WSP) unit.
The WSP sends the processed signal to the Application Manager Unit (WAM),
which passes the signal to the ATM Cross-connect Unit (AXU). The AXU unit
sends the signal to the Interface Unit (IFU), which then passes the signal through
the Iub interface to the RNC.
Downlink path
The RNC receives a signal from the network and sends the signal to the IFU unit
over the Iub interface. The IFU unit passes the signal to the AXU unit. The AXU
unit then switches the signal to the allocated WAM unit for ATM termination.
The WAM unit unpacks the ATM frame and sends the signal to the allocated
WSP unit for digital processing. The WSP unit sends the processed signal to theWTR unit via the WMC unit.
In the WTR unit, the signal is converted from digital to analog and modulated to
the carrier frequency. The WTR unit then sends the signal to the Power Amplifier
Unit (WMP), which amplifies the signal and passes it on to the WAF unit. The
WAF unit sends the signal to the antenna connector located at the bottom part of
BTS cabinet. The signal then goes through the optional Bias-T and MHA units to
the antenna, which passes the signal through the air interface to the UE.
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Figure 4. MetroSite 50 BTS architecture 1-Omni configuration
Figure 5. MetroSite 50 BTS architecture 2-Omni configuration
WEA WPS
WAM
T-bus
CarrierInterface
WMC(CLK)
AXU IFUlub
DSC-BUS
R-bus
WSP
WSP
WSP
Sector
A WAFA TRX
TRX
RR-bus
WMC(SUM)
RT-bus
WTR
WMP
WEA WPS
WAM
T-bus
CarrierInterface
WMC(CLK)
AXU IFUlub
DSC-BUS
R-bus
WSP
WSP
WSP
TRX
SectorA
WAFA
WMP
WTR
RR-bus
WMC(SUM)
RT-bus
TRX
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Figure 6. MetroSite 50 BTS architecture 1+1 ROC configuration
Figure 7. MetroSite 50 BTS architecture 1+1+1 ROC configuration
WEA WPS
WAM
T-bus
CarrierInterface
WMC(CLK)
AXU IFUlub
DSC-BUS
R-bus
WSP
WSP
WSP
SectorA
SectorB
WMPTRX
TRX
RR-bus
WMC(SUM)
RT-bus
WTR
WAFH
SectorA
SectorB
SectorC
WMP
RR-bus
WMC(SUM)
WEA WPS
WAM
T-bus
CarrierInterface
WMC(CLK)
AXU IFUlub
DSC-BUS
RT-bus
WTR
WTR
WAFG
R-busTRX
TRX
TRX
TRX
WSP
WSP
WSP
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4.3 Internal BTS signalling
Buses on the Nokia MetroSite 50 BTS backplane and cables carry signals
between the internal BTS units.
The table below lists the BTS buses and their functions.
Table 5. Nokia MetroSite 50 BTS buses
Bus Function
CIF Carrier Interface between the WAM unit
and AXC Node. It carries user data,
user- related signalling, and O&M infor-mation from the RNC/NetActTM
CLK Clock and Synchronisation Interface. It
provides frequency reference, opera-
tional clocks, and other timing signals for
the use of other units in the BTS.
R-BUS Receive Bus, which delivers samples re-
ceived from the WMC unit to a maxi-
mum of 3 WSP units.
RR-BUS Radio Receive Bus, which delivers the
main and diversity signal in digital formto the WMC unit for further distribution.
T-BUS Transmit Bus, which carries summed
and spreaded signals from the WSP unit
to the WMC unit.
RT-BUS Radio Transmit Bus, The WMC unit for-
wards the carrier data to the WTR unit
via the RT-BUS for modulation and up-
conversion
DSC-BUS Data, Signalling, and Control Bus. User
data and signalling is carried via this bus
from the WAM unit to the WSP units.
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5 Transmission5.1 Transmission interfaces
Transmission functionality is integrated in the WCDMA BTS. The transmission
between the RNC and the BTSs (Iub interface) is based on ATM. It is possible touse the already available PDH or SDH based transmission networks (for example
E1, STM-1 and so on). The WCDMA ATM Iub traffic can be transported over
the existing transmission systems by using inverse multiplexing (IMA). IMA
combines 2/1.5/6.3 Mbit/s connections to one ATM connection, and vice versa.
There is no immediate reason to change or modify the existing access network,
except for the necessary capacity upgrades due to increased traffic. The RAN
(BTS-RNC) transmission can be based on star, chain, tree and loop topologies.
The physical transmission links can be shared between the WCDMA generated
traffic and the second generation mobile traffic and fixed traffic.
Each Nokia MetroSite 50 BTS has an integrated ATM switch, called the ATM
Cross-connect (AXC) Node, for communication between the sectors inside the
BTS, towards the RNC, and towards other BTSs. The AXC is constructed of one
AXU unit and one Interface Unit (IFU).
The AXU unit performs the main ATM functionality for the communication
within the BTS and provides the connections to other network elements. The
IFUs provide the physical connection to the network.
The IFUs currently available for Nokia MetroSite 50 BTS are the IFUs A/C/D/E
and F. They support the following transmission interfaces respectively:
. E1/JT1
. STM-0/STM-1
. E1
. Nokia Flexbus
There is one slot for IFU available in Nokia MetroSite 50 BTS.
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5.2 Network topologies
Nokia MetroSite 50 BTS supports point-to-point, star, chain, tree, and loop
network topologies. The choice of a network topology depends mainly on therequirements for transmission media and availability.
The star and chain configurations are illustrated in the following Star and chain
configurations figure.
Figure 8. Star and chain configurations
The loop configuration is illustrated in the following Loop configuration figure.
Star configuration
Chain configuration
RNC (typical)
BTS (typical)
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Figure 9. Loop configuration
RNC (typical)
BTS (typical)
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6 Related software6.1 Local management
Element manager SW is used for managing Nokia WCDMA BTS
commissioning, supervision, maintenance, and testing, as well as transmissionconfiguration. The element manager SW includes Nokia WCDMA BTS Site
Manager (see the figure below) and AXC Manager for transmission management.
They are integrated so that the physical interface (cable and connectors) are the
same but there are two different applications running on the PC.
The Manager PC is connected to the BTS by means of an Ethernet connection.
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Figure 10. Nokia WCDMA BTS Site Manager
Both Nokia WCDMA BTS Site Manager and AXC Manager run in NT,
Windows 95, Windows 98 or Windows 2000 environment.
6.2 Configuration management
Once the BTS is in normal operation, a polling process is used to check the
possible changes in the BTS configuration. The information in the HW database
changes when units are added or removed from the BTS.
If the initially detected units do not respond to the normal autodetection polling,
they are reported to be faulty.
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6.3 Software updates
Nokia WCDMA BTS can store two SW packages in its memory. SW can be
loaded either locally with the element manager SW, or remotely from the RNC orNokia NetAct (via the RNC).
Local SW downloading is typically done only when Nokia NetAct connection
is missing, that is during the commissioning. Nokia WCDMA BTS SW can be
downloaded as a background operation without interrupting the BTS operation.
The new SW can be activated at any time suitable for the operator.
Only downloadable SW is used in Nokia WCDMA BTS. The SW can be
downloaded and updated from Nokia NetAct. This procedure is centralised,
which means that several BTSs can be upgraded with the new SW either
simultaneously or one by one.
Nokia WCDMA BTS keeps the current and the previous SW package in its flash
memory. In the case of, for example, a power cut, the current SW package will be
brought into use from the flash memory in a few seconds.
6.4 External alarms and controls
The BTS inputs and outputs can be configured and tested locally on the Nokia
WCDMA BTS site with the element manager SW. There are 24 user-definable
external inputs and 6 user-controllable outputs available. These can be freely
configured to support different observation or control needs at the BTS site.
In normal operation, the BTS's external alarms and control outputs are managed
from Nokia NetAct after they have been configured.
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7 Construction7.1 Cabinet construction
Nokia MetroSite 50 BTS has a cabinet core made of an aluminium chassis
enclosed with aluminium covers. The cabinet shields the base station againstingress of water, snow, and foreign objects and provides required EMC
protection.
Figure 11. Nokia MetroSite 50 BTS
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Figure 12. Cabinet core of Nokia MetroSite 50 BTS
7.2 Cabinet dimensions and weights
The table below lists the dimensions and weights of Nokia MetroSite 50 BTS.
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Table 6. Physical properties of Nokia MetroSite 50 BTS
Parameter MetroSite 50 BTS
Height 1100 mm
Depth 435 mm
Width 400 mm
Cabinet weight, empty 47 kg (max)
Cabinet weight, 1-Omni 69 kg (max)
Cabinet weight, 2-Omni 69 kg (max)
Cabinet weight, 1+1 ROC 74 kg (max)
Cabinet weight, 1+1+1 ROC 77 kg (max)
The dimensions of Nokia MetroSite 50 BTS are also presented in the figure
below.
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Figure 13. MetroSite 50 BTS dimensions
7.3 BTS locking
The cabinet door can be locked with the door-open key. When the key is turned
clockwise, the door opens and when it is turned anticlockwise the door is locked.
See the figure below.
The cabinet can also be fitted with an optional security lock for additional
protection. The security lock functions in a similar way with the BTS lock.
DN0523029
1100mm
(43.3
in.)
400 mm(15.7 in.)
435 mm(17.1 in)
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Figure 14. BTS lock and security lock operation
DN05182314
Open
CloseBTSLock
SecurityLock (Optional)
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8 Units8.1 Unit availability
The table below presents the number of units that each MetroSite 50 BTS
configuration can house.
Table 7. Maximum number of units in different configurations
1+1+1 ROC 1+1 ROC 1-Omni 2-Omni
Internal units
Cabinet (WCCF) 1 1 1 1
Transmission Interface Unit (IFU) 1 1 1 1
ATM Cross-connect Unit (AXU) 1 1 1 1
Application Manager Unit (WAM) 1 1 1 1
Summing, Multiplexing and Clock Unit
(WMC)
1 1 1 1
Signal Processing Unit (WSP) 3 3 3 3
Transmitter and Receiver Unit (WTR) 2 1 1 1
Power Amplifier Unit (WMP) 1 1 1 1
Antenna filter (WAF) 1 1 1 1
Power supply unit (WPS) 1 1 1 1
Unit cables WUCA 1 1 - -
Unit cables WUCB - - 1 1
External units
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Table 7. Maximum number of units in different configurations (cont.)
1+1+1 ROC 1+1 ROC 1-Omni 2-Omni
Masthead amplifier (MHA), optional 6 4 2 2
Bias-T, optional 6 4 2 2
Diplexer, optional 6 4 2 2
Triplexer, optional 6 4 2 2
Heater unit, optional 1 1 1 1
Pole mounting kit, optional 1 1 1 1
TQ angle - Open cable JT1/E1 max. 8 max. 8 max.8 max.8
The units in Nokia MetroSite 50 BTS are illustrated in the figure below.
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Figure 15. Unit positions in Nokia MetroSite 50 BTS
DN0477339
WTR
WPS
WTR
WMP
WAM
WSP
WSP
WAF
IFU
AXU
WMCWSP
Roof
Baseband fan
Cable entry
WEA module
Cabinet fan
Heat exchanger
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8.2 RF units
Transmitter and receiver unit
On the transmitting side, the Transmitter and Receiver unit (WTR) receives
digital data from the Signal Processing unit (WSP) via the Summing and
Multiplexing unit (WMC). It performs modulation and upconversion for the
signal. On the reception side, WTR performs channel selection and down
conversion for the selected carrier. The received signal is digitized, demodulated
and passed to WSP via WMC.
Two separate TRXs in one WTR unit can be used independently from each other.
The TRXs can operate on the same frequency or, if necessary, on different
frequencies. This enables flexible usage of TRXs between sectors and cells.
Power amplifier unit
The Power Amplifier Unit (WMP) is a single/dual carrier amplifier with an
operating bandwidth of any 5/10 MHz section on the whole 60 MHz WCDMA
allocation. In WMP, the signals received from WTR are amplified linearly and
distributed to the Antenna Filter Unit (WAF).
Antenna filter unit
The Antenna Filter Unit (WAF) combines and isolates transmission and reception
signals to one main antenna and one RX diversity antenna. Additionally, the
received signals are amplified inside the unit.
Basic WAFA/B unit contains a receiver multicoupler with four outputs for the
main branch and four outputs for the diversity branch. There are separate WAF
unit versions available for 1+1+1 ROC and 1+1 ROC configurations. 1+1+1
ROC configuration uses WAFG unit, which combines the functionalities of three
basic WAF units and a three-way power splitter. WAFG has three outputs for
main branch and three for diversity branch. 1+1 ROC configuration uses WAFH
unit, combining the functionalities of two basic WAFs and a two-way power
splitter. WAFH has two outputs for main and two for diversity branches.
8.3 Baseband units
Summing and clock unit
The Summing and Clock unit (WMC) sums the TX signals from three Signal
Processing units and routes combined TX data to WTR. RX data is routed and
distributed to WSPs.
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In addition, WMC generates the reference clock signals according to the
reference received from the Iub interface and provides the clock signals to the
other units of the BTS.
Signal processing unit
The Signal Processing unit (WSP) performs RX and TX code channel processing,
channel coding, and channel decoding functions. Summing of the TX code
channels is performed for the code channels processed in the unit.
Application manager unit
The Application Manager (WAM) performs O&M functions and carrier control.
WAM functions as the master controller of the BTS and performs common O&M
functions, such as storing and distribution of the BTS software and configuration
management along with alarm collection and handling.
8.4 Transmission units
Transmission Interface unit
A variety of transmission interfaces are available for connections between Nokia
MetroSite 50 BTS and the transmission network: IFUA, IFUC, IFUD, IFUE and
IFUF. The BTS has one slot reserved for a transmission interface plug-in unit.
The transmission media can be wire line (E1/JT1), fibre optic cable (STM-0 and
STM-1) or Nokia Flexbus.
The following transmission interfaces are available:
. 8 * E1/JT1 with IMA (JT1 = Japanese 1.5 Mbit/s PDH), 120/110 ohm
. 8 * E1 with IMA, 75 ohm
. 3 * STM-1 (VC4)
. 3 * STM-0 (VC3) (Japan)
. 3 * Nokia Flexbus.
The transmission interfaces allow for merging WCDMA traffic with existing
traffic using fractional E1s to add full and/or partial E1s without disturbing the
existing traffic. Circuit Emulation Service can be used to add the existing traffic
to the ATM based WCDMA traffic.
Connections between the Nokia WCDMA RAN network elements can be
configured using point-to-point, chain, star, or loop network configurations.
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Fibre optic transmission
For fibre optic transmission, Nokia MetroSite 50 BTS can be fitted with:
. IFUC unit with STM-0/1 interfaces: VC3/VC4 support for fibre optic
cable, signal termination, synchronisation, and a CPU circuitry for unit
control.
The unit can be configured independently to function in STM-0 or STM-1
mode. It has three STM connectors.
. IFUF with STM-1 interface: VC-12 support for fibre optic cable. The unit
has one STM connector.
The IFUC and IFUF units can be connected to a microwave radio.
Wire line transmission
The following wire line transmission units are available for Nokia MetroSite 50
BTS:
. IFUA with E1/JT1 with IMA interfaces: 8 x 2 Mbit/s (E1) or 8 x 1.5 Mbit/s
(J1) PCM connections, eight twisted pair 120/110 ohm TX/RX interface
connectors for either E1 or JT1 use. The unit can be configured either to E1
or JT1 mode.
. IFUD with E1 with IMA interfaces:8x2Mbit/s PCM connections, 16 coax
75 ohm (asymmetric) TX/RX interface connectors.
Radio transmission
The following PDH radio transmission unit is available for Nokia MetroSite 50
BTS:
. IFUE with Nokia Flexbus interface: 16 x 2 Mbit/s, three Flexbus
connectors.
The IFUE unit can be connected to Nokia FlexiHopper Microwave Radio and
Nokia MetroHopper Radio.
ATM Cross-connection unit
The ATM Cross-connection unit (AXU) interconnects the Application Manager
(WAM) to the Transmission Interface Units (IFUs). AXU can handle
transmission network level ATM cross-connections and support IP routing.
Two units combining the functionalities of IFU and AXU units are also available
for Nokia MetroSite 50 BTS:
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. AXCC, which combines the AXU and IFUA functionalities.
. AXCD, which combines the AXU and IFUD functionalities
8.5 Power supply unit
The Power Supply unit (WPS) provides operating voltages for Nokia MetroSite
50 BTS. There is one version of WPS unit available, and it can operate both on
AC and DC power.
8.6 Optional units
Bias-T
Bias-T unit feeds the operating power to the MHA and controls the external
antenna.
Diplexers and Triplexers
Diplexers and Triplexers are filter units which enable the use of a common feeder
for GSM and WCDMA systems.
Masthead amplifier
Nokia Masthead Amplifier (MHA) unit amplifies the received signal at the mast
to compensate for the cable losses.
Pole mounting kit
Optional pole mounting kit enables the Nokia MetroSite 50 BTS installation on a
pole. Up to two cabinets can be fitted to the same pole.
Heater
The heater unit heats the Nokia MetroSite 50 BTS to the specified operating
temperature during cold start. The heater unit can be used both in normal
operation and in a cold start of a WPSG-equipped BTS.
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9 BTS technical data9.1 Operating conditions
Note
When surveying the prospective sites, consider the values presented in this
section.
Operating conditions are defined as stationary: the equipment is mounted on a
structure, or on a mounting device, or it is permanently placed at a certain site.
Nokia MetroSite 50 BTS is not intended for portable use.
Climatic conditions for operation
The climatic conditions for Nokia MetroSite 50 BTS are defined according to
ETSI 300 019-1-4 class 4.1 IEC 4M3: temperature controlled, weather protected
locations.
Nokia MetroSite 50 BTS can operate in the climatic conditions and mechanical
conditions listed in the tables below. The weather shielding of the Nokia
MetroSite 50 BTS is valid when the BTS is mounted in the recommended
positions.
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Table 8. Climatic conditions for operation
Climatic condition Class 4.1 value
Temperature range of operation -33C to +50C (AC with heater)*
-10C to +50C (DC)
-33C to +50C (DC with AC heater)*
Relative humidity 15% to 100%
Absolute humidity 0.26 g/m3 to 25 g/m3
Rain intensity 6 mm/min
Temperature change rate (average of 5
minutes)
0.5C/min.
Air pressure 70 kPa to 106 kPa
Solar radiation 1120 W/m2
Heat radiation 1120 W/m2
Surrounding air movement 50 m/s
Conditions of condensation Yes
Precipitation (rain, snow, hail etc.) al-
lowed
Yes
Low rain temperature 5C
Water from sources other than rain al-
lowed
Splashing water
Icing and frosting allowed Yes
*When started at -33C, the BTS takes up to 3 hours to warm up in heater's nominal voltages115 V and 230 V.
Mechanical conditions for operation
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Table 9. Mechanical conditions for operation
Mechanical condition Class 4.1 value
Stationary vibration, sinusoidal:
Peak value of displacement amplitude at
frequency range 2 to 9 Hz
3.0 mm
peak value of displacement amplitude
at frequency range 9 to 200 Hz
10 m/s2
Peak acceleration for non-stationary vi-
bration, including shock
250 m/s2
Earthquake requirements Bellcore GR-63-CORE, Zone 4
IP class
Nokia MetroSite 50 BTS electronics is weather-proof to prevent the ingress of
rain and snow.
Nokia MetroSite 50 BTS cabinet can be used under IP55 circumstances.
Acoustic noise
The acoustic noise is measured according to ISO 3744 and ISO 7779. The noise
is sound power.
The fan units of the Nokia MetroSite 50 BTS generate acoustic noise. The level
of acoustic sound power depends on the following factors:
. Ambient temperature
. Rate of temperature change
The acoustic sound power level is higher when the ambient temperature is rising.
The acoustic sound power of Nokia MetroSite 50 BTS is shown in the table
below.
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Table 10. The maximum acoustic sound power of BTS
Condition Value (max.)
+ 15C 45 dB
+ 23C 52 dB
+ 50C 65 dB
9.2 Configurations
The following table presents the configurations available for Nokia MetroSite 50
BTS.
Table 11. Nokia MetroSite 50 BTS configurations
Configuration Output power per
carrier
Output power per
antenna sector
Max. channel
capacity
1-Omni 40 W 40 W 192
2-Omni 15.5 W 2 x 15.5 W 192
1+1 ROC 37.0 W 18.5 W 192
1+1+1 ROC 37.5 W 12.5 W 192
9.3 Electrical properties
The table below shows the electrical properties of Nokia MetroSite 50 BTS.
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Table 12. Electrical properties of Nokia MetroSite 50 BTS
Nominal operating voltage Permitted operating voltage
100 to 240 VAC (50/60 Hz) 88 to 276 VAC (45 - 66 Hz)
276 to 310 up to 3 minutes cumulatively per 24
hours
-48 VDC -40.5 to -57 VDC
The table below describes the heater unit's power ratings.
Table 13. Heater unit power ratings
Parameter Between WAF and
transmission units
Top of baseband fan
Nominal power, with nom-
inal 115 VAC
250 W 135 W
Nominal power, with nom-
inal 230 VAC
250 W 135 W
9.4 BTS power consumption
Table 14. Nokia MetroSite 50 BTS maximum power
consumption values
Current Power consumption
AC 1100 W
DC 700 W
DC with AC heaters 1040 W
The maximum power consumption values presented in the table are calculated with
fully equipped 1+1+1 ROC configuration, three Flexi hoppers and six MHAs, fans ON
and with AC current, heaters ON.
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Table 15. Nokia MetroSite 50 BTS typical power
consumption values
Configuration Power consumption
AC
Power consumption
DC
1-Omni 620 W 560 W
2-Omni 620 W 560 W
1+1 ROC 630 W 570 W
1+1+1 ROC 650 W 590 W
Typical power consumption values with fully equipped configuration, without heaters,
radio relays or MHAs.
9.5 RF specifications
The table below shows the RF properties of Nokia MetroSite 50 BTS.
Table 16. RF properties of Nokia MetroSite 50 BTS
Property Value
TX Frequency Range 2110 - 2170 MHz
RX Frequency Range 1920 - 1980 MHz
Duplex separation 190 MHz
Channel raster 200 kHz
Channel spacing 5 MHz
TX output power at antenna connector 12.5 - 40 W
Dynamic power control of code channel 25 dB
RX sensitivity typical -124.7 dBm
typical -127.5 dBm with 2-port diversity
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9.6 Manager hardware and software requirements
The table below lists the hardware and software requirements for Nokia
WCDMA BTS Manager and Nokia AXC Manager.
Table 17. Hardware and software requirements for Nokia WCDMA BTS
Manager and Nokia AXC Manager
Requirement Property
Processor Intel Pentium II 600 MHz or higher
RAM Min. 256 MB
Free hard disk space Min. 50 MB
Display Colour display, SVGA, minimum resolu-
tion 800 x 600, 1024 x 768 with 16 bit or
more colour depth recommended
Accessories CD-ROM or DVD drive (optional)
Microsoft Windows -compatible mouse
or pointing device with required software
Microsoft Windows -compatible printer
(optional)
Communication cable between PC andAXC, 10baseT crossed Ethernet with
RJ-45 connector (for Nokia AXC
Manager)
Interface ports Ethernet port (for Nokia AXC Manager)
Serial port or parallel port for printer
Mouse port (in case mouse is used as
the pointing device)
Operating system Microsoft Windows NT4.0, 95/98, 2000
(for Nokia WCDMA BTS Manager)
Microsoft Windows NT4.0, HP UNIX (forNokia AXC Manager)
Java runtime environment JRE 1.3.1 or later version (for Nokia
WCDMA BTS Manager), to be down-
loaded from the Sun website
JRE 1.2.2, build 5 (for Nokia AXC
Manager), delivered with Nokia AXC
Manager software
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9.7 Compliance on EMC, RF and Safety
In Europe this means compliance with Directive 1999/5/EC of the European
Parliament and of the Council of 9 March 1999 on radio equipment andtelecommunications terminal equipment and the mutual recognition of their
conformity.
In other market areas additional compliance is fulfilled according to relevant
authority requirements.
EMC
Emission
. ETSI EN 301 489-1: Electromagnetic Compatibility and Radio Spectrum
Matters (ERM); Electromagnetic Compatibility (EMC) standard for radio
equipment and services - Part 1: Common technical requirements
. EN55022: "Limits and methods of measurement of radio disturbance
characteristics of information technology equipment"
. 3GPP TS 25.113:3rd Generation Partnership Project; Technical
Specification Group Radio Access Networks; Base station electromagnetic
compatibility (EMC)
Immunity
. ETSI EN 301 489-1: Electromagnetic Compatibility and Radio SpectrumMatters (ERM); Electromagnetic Compatibility (EMC) standard for radio
equipment and services - Part 1: Common technical requirements
. ETSI EN 301 489-23: Electromagnetic Compatibility and Radio Spectrum
Matters (ERM); Electromagnetic Compatibility (EMC) standard for radio
equipment and services - Part 23: Specific conditions for IMT-2000
CDMA Direct Spread (UTRA) Base Station (BS) radio, repeater and
ancillary equipment
. 3GPP TS 25.113:3rd Generation Partnership Project; Technical
Specification Group Radio Access Networks; Base station electromagnetic
compatibility (EMC)
. IEC 1000-4-9: Pulse magnetic field immunity test
. IEC 1000-4-8: "Electromagnetic Compatibility (EMC) Part 4. Testing and
measurement techniques Section 8: Power frequency magnetic field
immunity test, Basic EMC Publication"
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RF
. ETSI EN 301 908-1: Electromagnetic Compatibility and RadioSpectrum
Matters (ERM); Base Stations (BS) and User equipment (UE) for IMT-
2000 third-generation cellular networks - Part 1: Harmonized standard for
IMT-2000, introduction and common requirements, covering essential
requirements of article 3.2 of the R&TTE Directive
. ETSI EN 301 908-3: Electromagnetic Compatibility and Radio Spectrum
Matters (ERM); Base Stations (BS) and User equipment (UE) for IMT-
2000 third-generation cellular networks - Part 3: Harmonized standard for
IMT-2000 CDMA Direct Spread (UTRA FDD) (BS) covering essential
requirements of article 3.2 of the R&TTE Directive
. 3GPP TS 25.141:3rd Generation Partnership Project; Technical
Specification Group Radio Access Networks; Base station conformance
testing (FDD)
Safety
. IEC 60950/ EN 60950: Safety of Information Technology equipment
including electrical business equipment
. EN 50383: Basic standard for the calculation and measurement of the
electromagnetic field strength and SAR related to human exposure from
radio base stations and fixed terminal stations for wireless
telecommunications system (110 MHz - 40 GHz)
.
EN 50384: Product standard to demonstrate the compliance of radio basestations and fixed terminal stations for wireless telecommunications
systems with the basic restrictions or the reference levels related to human
exposure to radio frequency electromagnetic fields (110 MHz - 40 GHz) -
Occupational
. EN 50385: Product standard to demonstrate the compliances of radio base
stations and fixed terminal stations for wireless telecommunications
systems with the basic restrictions or the reference levels related to human
exposure to radio frequency electromagnetic fields (110 MHz - 40 GHz) -
General public
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9.8 Iub accuracy requirement
To meet the BTS Air interface accuracy requirement +/- 0.05 ppm (set by 3GPP),
the Iub interface must meet the long-term accuracy of +/- 0.015 ppm. This kind ofaccuracy is attained if the network master clock (PRC) fulfills the ITU-T
recommendation G.811 and the synchronisation of the network is correct. The
maximum jitter/wander of the Iub interface is specified in the ITU-T
recommendation G.823.
Another possibility is that the BTS master clock reference comes via the AXU
reference clock interface. The Iub accuracy requirement above also applies for the
AXU reference clock interface.
Base Station Description