Metrosite 50

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Base Station Description

dn0523726Issue 1-0 en

# Nokia Corporation 1 (54)

00039292

Nokia MetroSite 50 Base Station


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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.

2 (54) # Nokia Corporation dn0523726Issue 1-0 en



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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



Contents


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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.

0523DN02246819



CE marking


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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:



Environmental information


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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)

DN0577953





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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.



Nokia MetroSite 50 Base Station


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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



Operation


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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



Operation


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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.



Operation


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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.



Transmission


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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)

DN02208818




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Figure 9. Loop configuration

RNC (typical)

BTS (typical)

DN02208821



Transmission


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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.



Related software


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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.



Related software


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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

DN0523005



Construction


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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.

DN0523017




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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.



Construction


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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)



Construction


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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



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



Units


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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.



BTS technical data


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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



BTS technical data


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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


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


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


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


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.


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