metro site

7/16/2019 Metro Site

http://slidepdf.com/reader/full/metro-site 1/44

DN98621946 © Nokia Networks Oy 1 (44)Issue 3-0 en

4649075

Nokia MetroSite GSM BaseStation Product Overview



Nokia MetroSite GSM Base Station Product Overview

2 (44) © Nokia Networks Oy DN98621946Issue3-0en

The information in this document is subject to change without notice and describes only theproduct defined in the introduction of this documentation. This document is intended for theuse of Nokia Networks' customers only for the purposes of the agreement under which thedocument is submitted, and no part of it may be reproduced or transmitted in any form ormeans without the prior written permission of Nokia Networks. The document has beenprepared to be used by professional and properly trained personnel, and the customerassumes full responsibility when using it. Nokia Networks welcomes customer comments aspart of the process of continuous development and improvement of the documentation.

The information or statements given in this document concerning the suitability, capacity, orperformance of the mentioned hardware or software products cannot be considered bindingbut shall be defined in the agreement made between Nokia Networks and the customer.However, Nokia Networks has made all reasonable efforts to ensure that the instructionscontained in the document are adequate and free of material errors and omissions. NokiaNetworks will, if necessary, explain issues which may not be covered by the document.

Nokia Networks' liability for any errors in the document is limited to the documentary correctionof errors. Nokia Networks WILL NOT BE RESPONSIBLE IN ANY EVENT FOR ERRORS INTHIS DOCUMENT OR FOR ANY DAMAGES, INCIDENTAL OR CONSEQUENTIAL(INCLUDING MONETARY LOSSES), that might arise from the use of this document or theinformation in it.

This document and the product it describes are considered protected by copyright according tothe applicable laws.

NOKIA logo is a registered trademark of Nokia Corporation.

Other product names mentioned in this document may be trademarks of their respectivecompanies, and they are mentioned for identification purposes only.

Copyright © Nokia Networks Oy 2000. All rights reserved.

As stated in the Declaration of Conformity, this product complies with protection requirements

of the Council Directive 89/336/EEC relating to electromagnetic compatibility, when installed

using EMC-protected installation practices and practices stated in our User Manuals.




Contents

Contents 3

1 About this document 5

2 Introduction to Nokia MetroSite GSM Base Station 7

3 Features 93.1 High voice and data capacity 93.2 Fast and easy implementation 113.3 Cost savings and immediate revenue flow 13

4 Applications and configurations 154.1 Applications 15

4.2 Configurations 16

5 Management and software 195.1 Nokia SiteWizard 195.2 Main new software features 205.3 Software updates 21

6 Construction and units 236.1 Mechanics 236.2 Units 256.2.1 Transceiver unit (TRX) 266.2.2 Interface unit 266.2.3 Transmission unit 27

6.2.4 Power supply unit 286.2.5 Fan unit 28

7 Unit alternatives and other delivery items 29

8 Technical specifications 318.1 System requirements for Nokia SiteWizard 358.2 Telecommunication features 368.3 International recommendations 378.3.1 Common standards 378.3.2 Electrical standards 378.3.3 Environmental Standards 40

8.3.4 Mechanical standards 418.3.5 Recommendations and standards 42



About this document


Note

1 About this document

This document provides a general overview of the Nokia MetroSite GSM BaseStation (BTS). This document contains:

• The introduction to the Nokia MetroSite GSM BTS in Chapter 2

• The Nokia MetroSite GSM BTS features in Chapter 3

• The Nokia MetroSite GSM BTS applications and configurations inChapter 4

• The Nokia MetroSite GSM BTS management and software features inChapter 5

• The Nokia MetroSite GSM BTS construction and units’ descriptions inChapter 6

• The Nokia MetroSite GSM BTS unit alternatives and other delivery itemsin Chapter 7

• The Nokia MetroSite GSM BTS technical specifications in Chapter 8

For further information on the Nokia MetroSite Capacity Solution and relatedproducts, see the separate documents for Nokia MetroSite Solution, Nokia MetroHopper Radio, Nokia FlexiHopper Microwave Radio, Nokia MetroHubTransmission Node, and Nokia MetroSite Battery Backup. All documentation isavailable through your local Nokia representative.

MetroHopper, FlexiHopper, and MetroHub may not be available in certain

markets.



Introduction to Nokia MetroSite GSM Base Station


2 Introduction to Nokia MetroSite GSMBase Station

The Nokia MetroSite GSM Base Station is a complete 1 to 4 transceiver (TRX),omni or sectored, all-climate base transceiver station used in GSM 900, GSM1800, GSM 1900 systems, or as a GSM 900/GSM 1800 Dual Band BTS.

Figure 1. The Nokia MetroSite GSM BTS is an ideal solution for a denseurban environment





High voice and data capacity

The Nokia MetroSite GSM BTS is optimised for microcellular applications,whilst it can also be used for building infill or cost-effective roadside coverage.

With the MetroSite GSM BTS indoor coverage can be provided from outdoor orby the utilisation of DAS (distributed antenna systems).

Despite the small size of the Nokia MetroSite GSM BTS’s cabinet, it canaccommodate up to four TRXs. This, together with the alternative output poweroptions and efficient frequency reuse, makes Nokia MetroSite GSM BTSs anefficient solution for building capacity in mobile networks in areas of heavytelecommunication traffic.

The Nokia MetroSite GSM BTS also provides a number of advancedtelecommunication features for both voice and data. To ensure efficient datatraffic, EDGE (Enhanced Data Rates for Global Evolution) functionality will beprovided by the MetroSite GSM BTS.

In order to ensure high quality of calls, the Nokia MetroSite GSM BTS supportsversatile features such as GSM 900/GSM 1800 Dual Band, frequency hopping,and receiver diversity.

Fast and easy implementation

Due to its small size and weight, the Nokia MetroSite GSM BTS is fast and easyto install either indoors or outdoors with minimal preparations. Both wall andpole installations are supported. From the network planning point of view, aNokia MetroSite GSM BTS can be installed at the most optimal locations.

In addition to these other versatile and advanced properties, the Nokia MetroSiteGSM BTS has been designed for easy commissioning. This was achieved by theautodetection of the base station hardware, the implementation of the SiteConfiguration File (SCF), and the easy to use Nokia SiteWizard commissioningtool.

Cost savings and immediate revenue flow

The size and ease of deployment of the Nokia MetroSite GSM BTS significantlyreduce the operator’s site planning and site acquisition costs. The small size andunobtrusive appearance of the BTS enable totally new types of BTS sites andmass site acquisition.

Fast start-up and quick integration into the network enable immediate revenueflow to the operator. Furthermore, the operational costs are low because the basestation management is carried out remotely from the Network ManagementSystem (NMS). During upgrade operations, the smooth step-by-step expansionkeeps the revenue flow uninterrupted and eventually increases the operator’sprofit.



Features


3 Features

As well as all the essential base station features, the Nokia MetroSite GSM BTShas many other unique features. This chapter describes these features in moredetail.

3.1 High voice and data capacity

With the Nokia MetroSite GSM BTS, the operator can increase thetelecommunication capacity whilst simultaneously maintaining the high qualityof calls.

Smooth capacity expansion

A Nokia MetroSite GSM BTS cabinet accommodates up to four TRXs. Initially,there is no need to install all TRXs in the cabinet even though there might be aneed for the capacity of 4 TRXs in a later phase. In this case, the site could beprepared with all the needed antennas and antenna feeders from the onset, and asthe demand for capacity grows, additional TRXs can be installed to the NokiaMetroSite GSM BTS during operation without interrupting the base stationservice. In future, it can be further increased in capacity by chaining several NokiaMetroSite GSM BTSs (including up to 12 TRXs) as one Base Control Function(BCF) object. There are virtually no constraints to the sectoring of the NokiaMetroSite GSM BTS.

Dual Band

The Nokia MetroSite GSM BTS supports Dual Band operation. There are nolimitations on the number of GSM900 and GSM1800 TRXs in the NokiaMetroSite GSM BTS. Any cell can be configured to operate either on 900 MHz

or 1800 MHz. Therefore, the network capacity can be increased by the additionof a new frequency band. This feature not only increases capacity, but also helpsto maintain the high quality of calls.





Optimised RF features

The Nokia MetroSite GSM BTS has two alternative transmitting output powers:1W (30dBm) and 5W (37dBm). The RF performance of the Nokia MetroSite

GSM BTS is optimised for microcellular applications. However, the two outputpower alternatives significantly increase the number of applications. The NokiaMetroSite GSM BTS can also be utilised for building full coverage, e.g. for infillsites or roadside coverage. It also provides capacity for many indoorapplications,as it can be used together with DAS or it can provide indoor coverage fromoutdoors.

The output power and the receiver sensitivity of the Nokia MetroSite GSM BTSfacilitates efficient frequency reuse with minimal interference. The NokiaMetroSite GSM BTS with two or more TRXs can be configured to use frequencyhopping and receiver diversity. These features add to the quality of calls goingthrough the Nokia MetroSite GSM BTS.

With the new 5W output power option there is a new version of power supplyunit, fan, and cover available. These plug-in unit versions must always be usedwhen the base station configuration includes a 5W TRX. Naturally, these newunit versions can also be used with a 1W base station configuration.

More speed and capacity with EDGE

Nokia provides a smooth entry to the high data rate solution. The introduction of EDGE to the Nokia MetroSite GSM BTS is very easy since the EDGEfunctionality is provided by a simple TRX upgrade. All of the Nokia MetroSiteGSM BTS TRXs can be EDGE capable. However, GSM and EDGE TRXs cancoexist in the BTS cabinet. In the EDGE configuration the power supply unit, fan,

and cover versions are the same as in the 5W configurations.

Integrated transmission for microcellular access

The flexible radio transmission solution of the Nokia MetroSite with the 58GHzNokia MetroHopper Radio for last-kilometer access (for more information referto Nokia MetroHopper Radio Product Overview), together with the BTS features,allow for a very large number of BTSs to be installed in a small area.

External battery backup with Nokia MetroSite BBU

To ensure an uninterrupted power supply for the Nokia MetroSite GSM BTS,external battery backup can be provided by the Nokia MetroSite Battery Backup.

The appearance and mounting options of the Nokia MetroSite BBU are the sameas those of the Nokia MetroSite GSM BTS.

Antenna solution

The Nokia MetroSite GSM BTS has versatile antenna configuration options.External antennas are used and in certain configurations, external combiners maybe used. Nokia MetroSite Antennas comprise multiport directional andomnidirectional antennas.



Features


The gains of Nokia MetroSite Antennas are optimised for microcellular solutions.Nokia MetroSite Antennas support dual band operation, and physically they areunobtrusive and blend easily into the city environment.

Other antennas, such as single and dual band antennas, cross-polarised antennas,and distributed antenna systems, can also be used with the Nokia MetroSite GSMBTS.

Advanced telecommunication features

The Nokia MetroSite GSM BTS software supports all essential basictelecommunication features. In addition, the Nokia MetroSite GSM BTS alsosupports the following advanced telecommunication features for speech services:

• Half Rate speech coding

• Enhanced Full Rate speech coding

• AMR (Adaptive Multirate speech coding), available later

The Nokia MetroSite GSM BTS supports the following advancedtelecommunication features for data services:

• HSCSD (High Speed Circuit Switched Data)

• 14.4 kbit/s GSM data

• Non-transparent and transparent data (9600, 4800, 2400 bit/s)

• GPRS (General Packet Radio Service), available later

• EDGE (Enhanced Data Rates for Global Evolution), available later

3.2 Fast and easy implementation

Installation

Because of its small size, light weight, and high level of integration, the NokiaMetroSite GSM BTS is easy to transport and install.

The Nokia MetroSiteGSM BTS is easy to install because of its small and modularstructure. The Nokia MetroSite GSM BTS is transported to the site with units pre-installed. Due to the modular structure of the GSM BTS, the installation can becarried out by one person. The GSM BTS chassis, which is the heaviest singlepart weighing 8kg, can be installed first and after that, the plug-in units and thecover can be installed one by one. If sufficient lifting equipment is available onthe site and other circumstances are favourable, the GSM BTS can be mountedwithout removing any of the units.





The Nokia MetroSite GSM BTS can be installed either on a wall or on a pole. Forpole installations, an optional pole mounting kit is available. This kit can be usedwith a variety of pole thicknesses.

The Nokia MetroSite GSM BTS can also be mounted horizontally. This extendsthe number of suitable installation locations.

The Nokia MetroSite GSM BTS cabinet internal cabling is limited to diversitycables. Also external cabling has been reduced to a minimum.

Commissioning

Commissioning the Nokia MetroSite GSM BTS has been made easy. No externalmeasuring devices are needed for the BTS’s commissioning tests. The NokiaSiteWizard is a commissioning software tool that guides the user throughout thewhole commissioning process. The Nokia Autoconfiguration feature furthereases Nokia MetroSite GSM BTS’s quick and smooth integration into the

network.

Figure 2. BTS Commissioning SiteWizard

TheNokia MetroSite GSMBTSsoftware includes an autodetection feature whichidentifies the BTS hardware. This reduces the time spent on commissioning as theuser does not have to enter manually a separate HW database for the BTS.



Features


The Nokia Autoconfiguration feature establishes a transmission link between theBSC and the BTS, and issues the new BTS to the NMS, which automatically setsthe transmission timeslots and settings for the base station. The NMS/2000software generates a Site Configuration file (SCF) that considerably eases the

commissioning of the Nokia MetroSite GSM BTS because most of theparameters can be fed directly from the file.

At the end of the commissioning process, the Site Acceptance Report is producedautomatically by the Nokia SiteWizard.

3.3 Cost savings and immediate revenue flow

Because the installation of the Nokia MetroSite GSM BTS does not requireextensive site planning, the site planning costs can be reduced. The versatile

installation options also ease the process of site acquisition and help to reduce theoperator’s site rental costs. Possible installation locations for the Nokia MetroSiteGSM BTS can be found on almost every street corner in any city. Banks,restaurants, billboards, or other such premises and structures enable an affordablemass site acquisition.

Installing and commissioning the Nokia MetroSite GSM BTS is fast and easy.The small size and light weight allow the installation to be carried out with aminimal work force. Because of the fast commissioning and integration to thenetwork, the ease of handling of the equipment and the minimised cabling of thesite, the time spent on the installation site is reduced. The easy commissioningand quick integration into the network ensure that the Nokia MetroSiteGSM BTSis up and running very soon after the installation. This means that the installationcosts are kept to a minimum and the revenue flow starts immediately.

During operation, the Nokia MetroSite GSM BTS is managed remotely from theNMS. Site visits are not needed for routine O&M tasks.



Applications and configurations


4 Applications and configurations

4.1 Applications

The Nokia MetroSite GSM BTS is designed to meet the demands of the

constantly increasing mobile telecommunication traffic. As well as the basestation, the Nokia MetroSite Capacity Solution comprises fully equipped siteswith transmission and auxiliary equipment.

The Nokia microcell solution offers a cost-optimised way to increase capacity upto ten times that of a typical macronetwork. It is based on the optimization of macrolayer and microlayer capacity. Microcell networks is where the NokiaMetroSite GSM BTS excels.

TheoptimisedRF performance with twoalternative outputpower values, thehighcapacity, the compatibility with Nokia Soft Capacity features, and the versatileinstallation options make the Nokia MetroSite GSM BTS an ideal solution for

areas where high capacity is needed.

In special microlayer hotspots - like street corners in downtown areas, sportsarenas, shopping centres, underground stations, and office buildings - the NokiaMetroSite GSM BTS provides virtually unlimited capacity.

The MetroSite GSM BTS can also be used to provide coverage for macrocellularnetwork - gaps in the network, or unfriendly terrain roadside sites. It can be usedto build fill-in coverage in dense urban areas where the site locations forconventional base stations are hard to find or a quick rollout is needed.

Furthermore, the Nokia MetroSite GSM BTS is an ideal solution for indoorapplications with high traffic intensity - like airports, railway stations, tunnels,

shopping malls, halls-type areas, and large offices. In these cases, the MetroSiteGSM BTS can be used as a stand-alone base station, as part of a distributedantenna system (DAS), or as part of Nokia GSM Intranet Office or Nokia GSMOffice.

In a stand-alone base station installation, the BTS can be located, for example, onthe wall of a building opposite, with the antennas directed towards the buildingwhere the indoor coverage is built. In DAS applications built with MetroSiteGSMBTS, coaxial cables, fibre optic distribution, or radiatingcablescan be used.





The MetroSite GSM BTS can be part of Nokia GSM Intranet Office or NokiaGSM Office. In this case, part of the MetroSite GSM BTS capacity can bededicated to this indoor solution and part to public GSM network.

Figure 3. Microcells built with Nokia MetroSite GSM BTSs

4.2 Configurations

The Nokia MetroSite GSM BTS can accommodate up to 4 TRXs, which can beused in any single or multi-sectored configuration, each containing from 1 to 4TRXs.

Sectoring for the Nokia MetroSite GSM BTS is very flexible. Each TRX has itsown antenna connector. The TRX incorporates a duplex filter; therefore, oneantenna handles both transmit and receive. As every TRX can form a cell of itsown, the maximum number of cells for a single BTS is four, giving up to 12 bychaining three BTSs.

The Nokia MetroSite GSM BTS can be upgraded from one TRX per BTS up tofour TRXs per BTS during operation.

BTS

BTS



Applications and configurations


Dual band

The configuration of the Nokia MetroSite GSM BTS is very flexible. Theintroduction of the GSM900 / GSM1800 dual band configuration is easy due to

the fact that the BTS cabinet can simultaneously house both GSM900 andGSM1800 TRXs. The Nokia MetroSite GSM BTS’s capability to house both 1Wand 5W TRXs at the same time, can be useful in some applications.

EDGE

When there is a need for new data services in the microcell network, theintroduction of EDGE is easy since GSM and EDGE TRXs can coexist in theNokia MetroSite GSM BTS: EDGE TRXs can provide both speech and dataservices. In mixed configurations, there are no limitations on howdifferent TRXscan be combined. However, in these cases the power supply unit, the fan, and thecover must support 5W configurations.



Management and software


5 Management and software

Generally, the Nokia MetroSite GSM BTS is managed from the Network Management System (NMS) via the Base Station Controller (BSC). This allowson-site management tasks to be kept to a minimum.

The Nokia NMS incorporates a full range of functions from fault, performanceand configuration management to transmission, trouble, and securitymanagement. For more information, please refer to the Nokia NMSdocumentation.

NMS/2000 SW T11 and BSC SW S8 fully support the Nokia MetroSite GSMBTS. However, NMS/2000 SW T13 and BSC SW S10 are needed for EDGEsupport.

The Nokia MetroSite GSM BTS is delivered to the customer with factory defaultSW settings in order to support the rapid deployment.

On site, the Nokia SiteWizard is used for BTS management.

5.1 Nokia SiteWizard

The Nokia SiteWizard software is used for managing the Nokia MetroSite GSMBTS and its transmission equipment including radio links. The Nokia SiteWizardis primarily used to commission the base station and to carry out maintenancetasks locally. During normal operation, the Nokia MetroSite GSM BTS ismanaged remotely from the NMS.

The Nokia SiteWizard provides a graphical user interface. It runs in WindowsNT, Windows 95, or Windows 98. The Nokia SiteWizard eases the process of

BTS commissioning. The SiteWizard’s context-sensitive on-line Help gives theuser information on the user interface elements and tasks performed with theNokia SiteWizard.

Figure 4 shows an example of the Nokia SiteWizard desktop with the followingwindows open:





1. Equipment View in the Supervision window.

2. BTS Events window.

3. Alarms window.

Figure 4. Nokia SiteWizard desktop

5.2 Main new software features

The main new software features of the Nokia MetroSite GSM BTS are:

• Autodetection of base station configuration

• Support for Nokia Autoconfiguration

• Advanced base station diagnostics and alarm management



Management and software


• Combined O&M and telecommunication signalling

• Chaining of Nokia MetroSite GSM BTSs (later software releases)

Autodetection of BTS configuration

TheNokia MetroSite GSM BTSsoftware includes an autodetection feature whichautomatically identifies the type, version, and serial number of the BTS units.This information is stored in the non-volatile memory of the master TRX and thedata is backed-up to the slave TRXs. If new units are added to the BTS orold unitsare replaced, the information is automatically updated.

Nokia Autoconfiguration

The Nokia MetroSite GSM BTS software supports the Nokia Autoconfigurationfeature which allows the automatic integration of the base station into thenetwork.

Advanced BTS diagnostics and alarm management

The Nokia MetroSite GSM BTS features an advanced BTS diagnostics systemthat considerably reduces the number of alarms. The relevant alarm informationis easily accessible and understandable.

Combined O&M and telecommunication signalling

The O&M signalling and TRX signalling can be combined into one channel tooptimise the use of transmission capacity.

Chaining of Nokia MetroSite GSM BTSs

By extending the BTS’s internal databus, up to 12 TRXs, divided over severalBTS cabinets, can be chained together. Nokia MetroSite GSM BTSs can also beconnected to the Nokia MetroHub Transmission Node in the same manner. In thelatter case, the Nokia MetroHub handles the transmission and the BTS does notneed to incorporate a transmission unit. The chaining feature will be supported inlater software releases.

5.3 Software updates

The Nokia MetroSite GSM BTS can store two software packages in memory. Thesoftware can be loaded:

• Locally with the Nokia SiteWizard

• Remotely from the BSC or NMS (via the BSC)

The BTS software can be downloaded as a background operation withoutinterrupting the BTS operation. The activation of new software can be done at anytime convenient for the operator.



Construction and units


6 Construction and units

As with the other properties of the Nokia MetroSite GSM BTS, its constructionhas been optimised for microcellular solutions and fill-in coverage. The chassisand the units are easy to handle and install. The compact structure allowsinstallation into previously inaccessible locations. Because of its plug-inconstruction, the Nokia MetroSite GSM BTSprovides greater flexibility than anyother microcellular base station currently on the market.

6.1 Mechanics

The Nokia MetroSite GSM BTS features a light-weight aluminium chassis witha stainless steel sheet backplate. A separate plastic cover covers the chassis andthe plug-in units. The cover shields the base station against ingress of water,snow, and foreign objects. The chassis and units are also protected by EMCshielding .





Figure 5. Dimensions and profile of the Nokia MetroSite GSM BTS

More mechanical properties of the Nokia MetroSite GSM BTS are given in Table1.

310(12.2)

840(33.1)

215(8.5)

114(4.5)

NOTE: DIMENSIONS mm (inch)

Table 1. Mechanical Properties

Property Value

Weight 40 kg (88.2 lb) max. with 4 TRXs.

Heaviest single part 8 kg (17.7 lb).

Low temperature limit - 40°C (- 40°F)

High temperature limit + 50°C (122°F)

Ingress protection class IP55





6.2 Units

The following plug-in units are fitted in the cabinet mechanics:

• Up to 4 transceiver units (TRX)

• Interface unit

• Transmission unit

• Power supply unit

• Fan unit

The arrangement of the units inside the cabinet is shown in Figure 6.

Figure 6. Arrangement of units

Power supply unit

Interface unit

Transmission unit

Fan unit

Transceiver units





Note

6.2.1 Transceiver unit (TRX)

The TRX of the Nokia MetroSite GSM BTS consists of digital and analogueparts. The digital functions are located in the baseband module, whereas the

analogue part consists of an RF module and integrated duplex filter. One of theTRXs is configured as the master TRX which manages the entire O&M functionsof the BTS. In order to optimise the transmitter output power, in most cases theantennas are directly connected to the TRXs. However, an external combiner canbe used with the MetroSite GSM BTS.

The nominal transmitter output power alternatives at the antenna connector aregiven in Table 2.

The introduction of EDGE requires an EDGE capable TRX.

6.2.2 Interface unit

The external interfaces of the Nokia MetroSite GSM BTS are located on theinterface unit. The Local Management Port (LMP) provides the connection to theNokia SiteWizard PC. The Nokia Q1 interface is a connection for supervisingNokia Q1-bus compatible external equipment, such as DMR radios. Theextension interface will in future be used as a databus for BTS chaining and forconnecting the Nokia MetroHub Transmission Node. Furthermore, the interfaceunit provides a connection for customer-definable external alarms (10) andcontrols (4).

The interface unit also provides the BTS master clock.

Table 2. Transmitter Output Power

Parameters MetroSite (1W TRX) MetroSite (5W TRX)

Nominal TRX Output Power 30dBm 37dBm

Nominal Receiver Sensitivity -108dBm -108dBm





6.2.3 Transmission unit

The transmission unit takes care of the transmission between the Nokia MetroSiteGSM BTS and the BSC through the Abis interface. The transmission media can

be either a radio link or a wire line (E1/T1). The transmission unit interconnectsthe Nokia MetroSite GSM BTS and the BSC using point-to-point, star, or loopnetwork configurations. The Nokia MetroSite GSM BTS supports 16 kbit/s, 32kbit/s and 64 kbit/s Abis TRX signalling. Similarly, the O&M signalling speedcan be 16 kbit/s, 32 kbit/s, or 64 kbit/s.

Locally, the transmission configuration is managed with the Nokia SiteWizard.Nokia Autoconfiguration makes the transmission configuration very easy.

The following radio link transmission interface units are available for NokiaMetroSite GSM BTSs:

• FC RRI : 16 x 2 Mbit/s, support for 1 microwave radio outdoor unit (oneFlexbus connector), cross-connection on 2 Mbit/s level

• FXC RRI : 16 x 2 Mbit/s, support for 2 microwave radio outdoor units (twoFlexbus connectors), grooming, branching and loop protection support,cross-connection on 8 Kbit/s level

The FC RRI and FXC RRI transmission units are connected to the NokiaMetroHopper Radio or the Nokia FlexiHopper Microwave Radio with a coaxialcable referred to as Flexbus. Moreover, with the Flexbus, it is possible to connectRRI transmission units to each other.

The FC RRI operates as the termination point in a star or chain topology network.

The FXC RRI transmission units interconnect the Nokia MetroSite GSM BTSand the BSC using point-to-point, chain, star, or loop network configurations.

The following wire line transmission units are available for the Nokia MetroSiteGSM BTS:

• FC E1/T1: 1 x 2 Mbit/s (E1) or 1 x 1.5 Mbit/s (T1) PCM connection, onecoaxial 75 ohm TX and one coaxial 75 ohm RX connector for E1 use, onetwisted pair 120/100 ohm TX/RX interface connector for either E1 or T1use

• FXC E1: 4 x 2 Mbit/s (E1) PCM connections, four coaxial 75 ohm TX andfour coaxial 75 ohm RX connectors for E1 use, grooming, branching andloop protection support, cross-connection down to 8 kbit/s level

• FXCE1/T1: 4 x 2 Mbit/s (E1) or4 x 1.5 Mbit/s (T1)PCM connections, fourtwisted pair 120/100 ohm TX/RX interface connectors for either E1 or T1use, grooming, branching and loop protection support, cross-connectiondown to 8 kbit/s level.





The FC E1/T1 operates as the termination point in a star or chain topologynetwork. The FXC E1 and FXC E1/T1 transmission units interconnect the NokiaMetroSite GSM BTS and the BSC using point-to-point, chain, star, or loopnetwork configurations.

If more transmissioncapacity is needed, the Nokia MetroHub Transmission Nodecan be used with Nokia MetroSite GSM BTS (for more information, refer to the Nokia MetroHub Transmission Node Product Overview).

6.2.4 Power supply unit

The purpose of the power supply unit is to produce the supply voltages needed bythe Nokia MetroSite GSM BTS. The base station supports both AC and DCpower.

The power consumption of the Nokia MetroSite GSM BTS depends mainly onthe BTS configuration, the number of TRX units in use, and the transmissionmode. The power consumption of the TRX depends on the transmitting outputpower and whether the modulation is GMSK or 8-PSK. The Nokia MetroSiteGSM BTS provides the power feed to the radio units and is capable of feedingpower up to 2 Nokia FlexiHopper Microwave Radio outdoor units.

The power supply unit alternatives are listed in Table 3.

6.2.5 Fan unit

The fan unit is located at the bottom of the cabinet. The master TRX controls the

fan unit according to the temperature information from other units. The fan unithas 16 gradually adjustable speeds. The fan speed increases as more cooling isrequired. The adjustable speed also minimises the noise generated by the fan unit.

The transmitting output power, as well as the modulation used, affect the heatload in the base station. For this reason, there are two alternative fan unitsavailable: one is for the 1W TRXs configurations, the other is for the 5Wconfigurations. In the case of the EDGE TRX, the fan is the same as for the 5WTRX.

Table 3. Nokia MetroSite GSM BTS power supply unit alternatives

Input Voltage MetroSite (1W TRXs) MetroSite (5W &EDGE TRXs)

230VAC VSAA HVSA

110VAC VSAB HVSB

36/48/60VDC VSDA HVSD



Unit alternatives and other delivery items


7 Unit alternatives and other deliveryitems

This chapter details the unit alternatives for the 1W and the 5W Nokia MetroSiteGSM BTSs.

Table 4. Nokia MetroSite GSM BTS - TRX unit alternatives

Unit Alternatives

Transceiver unit (TRX)

including the diversity cables

GSM 900 TRX, 1W:

• Standard filter version

• Two customer specific filter versions

GSM 1800 TRX, 1W

GSM 1900 TRX, 1W

GSM 900 TRX, 5W:

• Standard filter version• Two customer specific filter versions

GSM 1800 TRX, 5W

GSM 1900 TRX, 5W

GSM 900 TRX, EDGE:

• Standard filter version

• Two customer specific filter versions

GSM 1800 TRX, EDGE

GSM 1900 TRX, EDGE





Furthermore, the following items can also be ordered from Nokia:

• Prefabricated LMP

• Power cable (AC and DC)

• Abis cable (PCM)

• Flexbus cable

• Lifting rack

• Pole mounting kit

Table 5. Nokia MetroSite GSM BTS unit alternatives and other deliveryitems

Unit Alternatives

Transmission unit FC RRI

FXC RRI

FC E1/T1

FXC E1 (75 Ω)

FXC E1/T1 (120/100 Ω)

Power supply unit 230 VAC for BTS with 1W TRXs

110 VAC for BTS with 1W TRXs

36/48/60 VDC for BTS with 1W TRXs

230 VAC for BTS with 5W or EDGE TRXs

110 VAC for BTS with 5W or EDGE TRXs

36/48/60 VDC for BTS with 5W or EDGE TRXs

Interface unit -

Fan unit Fan for BTS with 1W TRXs

Fan for BTS with 5W or EDGE TRXs

Nokia SiteWizard -

Customer documents GSM 900 / GSM 1800 / GSM 1900:

• Nokia MetroSite GSM Base Station Product

Overview

• Nokia MetroSite GSM Base Station User Manual



Technical specifications


8 Technical specifications

The purpose of this chapter is to provide all necessary technical data of the NokiaMetroSite GSM BTS.

Table 6. Common technical data

Property Value Note

Height 870 mm (34.25 in) 954 mm (37.56 in)

including the cables cover

Width 310 mm (12.20 in) -

Depth 215 mm (8.46 in) -

Weight Maximum 40 kg (88.18

lb) with four TRXs

Approximately 18 kg

(39.68 lb) without TRXs.

Heaviest single part is 8 kg

(17.66 lb).

Low temperature limit - 40°C (-40°F) -

High temperature limit + 50°C (122°F) -

Ingress protection class IP55

UL50-3R

-

Acoustic noise, max. 55 dB (A)

61 dB (A)

With 1W TRXs BTS

With 5W or EDGE TRXs

BTS

(Sound power)

Nominal input voltage(external supply voltage) 230 VAC110 VAC

36/48/60 VDC

Own alternatives for 1WTRXs BTS and 5W/EDGE

TRXs BTS

Permitted operating voltage

fluctuation

184 VAC - 276 VAC

85 VAC - 145 VAC

29 VDC - 72 VDC

(44 Hz - 65 Hz)

(44 Hz - 65 Hz)





Typical power demand 200W

300W

With 1W TRXs BTS

With 5W TRXs BTS

• 4 TRXs

• FC E1/T1

• No heating

Maximum power demand 450W

630W

With 1W TRXs BTS

With 5W TRXs BTS

• GSM 1900

• 4 TRXs

• FXC RRI

• 2 FlexiHoppers• Maximum heating

Cooling Fan Capacity 70m3 /hr (2472ft3 /hr)

120m3 /hr (4238ft3 /hr)

With 1W TRXs BTS

With 5W TRXs BTS

Table 7. Specific technical data for GSM 900 BTS

Property Value Note

TX frequency range A: 925 - 960 MHz

H: 925 - 960 MHz

J: 925 - 960 MHz

Extended GSM

RX frequency range A: 880 - 915 MHz

H: 897.5 - 915 MHz

J: 890.1 - 915 MHz

-

Channel spacing 200 kHz -

Available radio channels 174 -

TX output power at antenna

connector, nominal

1W (30dBm)

5W (37dBm)

± 2dB at 20°C

(68°F), ± 2.5dB at

extreme

temperatures

Dynamic power control 30dB (15*2dB steps) -

Table 6. Common technical data (Continued)

Property Value Note





Static RX sensitivity -108.0dBm

-106.0dBm

Nominal

Minimum

RX diversity Yes With two or more

TRXs in one cell

Isolation requirement for

antenna or external combiner

equipment

min. 25dB -


Property Value Note

TX frequency range 1805 - 1880MHz -

RX frequency range 1710 - 1785MHz -

Channel spacing 200kHz -

Available radio channels 374 -


connector, nominal

1W (30dBm)

5W (37dBm)

± 2dB at 20°C

(68°F), ± 2.5dB at

extreme

temperatures

Dynamic power control 30 dB (15*2dB steps) -

Static RX sensitivity -108.0 dBm

-106.0 dBm

Nominal

Minimum


TRXs in one cell



equipment

min. 25dB -


Property Value Note

TX frequency range 1930 - 1990MHz -

RX frequency range 1850 - 1910MHz -

Channel spacing 200kHz -

Table 7. Specific technical data for GSM 900 BTS (Continued)

Property Value Note





Available radio channels 281 (298) 17 blocked /

reduced power

channels


connector, nominal

1W (30dBm)

5W (37dBm)

± 2dB at 20°C

(68°F), ± 2.5dB at

extreme

temperatures

Dynamic power control 30dB (15*2dB steps) -

Static RX sensitivity -108.0dBm

-106.0dBm

Nominal

Minimum


TRXs in one cell



equipment

min. 25dB -

Table 10. HW interfaces of the Nokia MetroSite GSM BTS

Interface Number Connector type/note

Antenna Connectors 1 - 4 N-type (female), one for each TRX

RX diversity connectors 2 - 8 SMA (female), two for each TRX

AC supply 230 V 1 IEC 320 (male)

AC supply 110 V 1 IEC 320 (male), with a notch

DC supply 36 /48 /60 V 1 Anderson Power Pole

Grounding 1 Cable clamp

External alarms and controls 1 10 alarm inputs 26-pin mini D-type

(female)

4 control outputs

Extension connectors 2 Out/In: 50-pin mini D-type (female)

13 MHz clock interface 1 MCX (female)

Frame clock 1 MCX (female)

Q1 interface 1 TQ

Local management port (LMP) 1 BQ, RS-232

Table 9. Specific technical data for GSM 1900 BTS (Continued)

Property Value Note





8.1 System requirements for Nokia SiteWizard

System requirements for the Nokia SiteWizard are detailed in Table 13.

Table 11. Transmission interfaces connections of the Nokia MetroSite GSMBTS

Interface Connector Number Connector type/note

FC RRI 1 TNC (50Ω), flexbus connection to outdoor

unit

FXC RRI 2 TNC (50Ω), flexbus connection to outdoor

unit

FC E1/T1 2

1

BT43 (75 Ω)

TQ (120/100 Ω)

FXC E1 (75 Ω) 8 BT43

FXC E1/T1 (120/100 Ω) 4 TQ

Table 12. Flexbus cable characteristics

Property Value

Cable type Coaxial cable, double shielded or semi-rigid

(recommended types RG-223, RG-214)

Characteristic impedance 50 ± 2 Ω

DC resistance < 4.6 Ω (sum of inner and outer conductor)

Data attenuation < 9.0 dB at 19 MHz

Flexbus signals DC power supply

Bidirectional data (37 Mbit/s, NRZ code, 1.4 V pulse

amplitude)

Length max. 140 m (153 yards) for RG-223

max. 300 m (328 yards) for RG-214





8.2 Telecommunication features

The Nokia MetroSite GSM BTS supports the following telecommunicationfeatures:

• DRX, discontinuous reception

• DTX, discontinuous transmission

• Handover and power control algorithms

• Stand-alone Dedicated Control Handover (SDCH)

• Interference band selection based on MS power

• Phase 2 Mobile Station (MS) Power Levels

• Better Random Access Channel (RACH) Detection

• Dynamic Stand-alone Dedicated Control Channel (SDCCH)

• Mode modify procedure

• Logical channel configurations (based on GSM/DCS recommendation05.02.)

• Flow control

Table 13. System Requirements for Nokia SiteWizard

Computer Intel Pentium-based IBM-compatible PC

Operating system Microsoft Windows NT 4.0 (with service pack 4)

Microsoft Windows 95 or Microsoft Windows 98 (with

service pack 1)

System memory

(minimum)

Windows NT 4.0:

• 64MB RAM

Windows 95 (or Microsoft Windows 98):

• 32MB RAM

Monitor SVGA, min. 800x600 pixels resolution

Minimum disk space 40MB

Accessories CD-ROM drive

Windows compatible mouse or pointing device

Windows compatible printer (optional)

Cable (PC - BTS)





• Antenna detection

• Full Rate speech coding

• Half Rate speech coding

• Enhanced Full Rate speech coding

• Basic GSM data 2.4 / 4.8 / 9.6 kbit/s

• GSM data services 14.4 kbit/s

• High Speed Circuit Switched Data (HSCSD)

• Ciphering (support for A5/0, A5/1, A5/2)

• FACCH emergency call setup

• Bad frame handling

8.3 International recommendations

This section lists the recommendations referred to in designing the NokiaMetroSite GSM BTS.

8.3.1 Common standards

Table 14 lists the common standards referred to in designing the Nokia MetroSiteGSM BTS.

8.3.2 Electrical standards

The tables in this section list the electrical standards used to design the 1W and5W Nokia MetroSite GSM BTSs.

Table 14. Common standards

Standard Description

ETSI GSM 05.05/11.20/11.21/11.22/11.23 Standard for base station equipment

J-STD-007 Personal Communications Services; Air

Interface Specification Volume 1; Radio

Path Physical Layer

TIA/EIA PN-3777 EMC specific





Table 15. Input voltage standards

Standard DescriptionETS 300 132-1:1996 Equipment Engineering Power Supply Interface at the

input to Telecommunications Equipment Interface

Operated by Alternated Current (AC)

ETS 300 132-2:1996 Power Supply Interface at the input to

telecommunications Equipment Interface Operated by

Direct Current (DC)

GSM 11.20 Standard for base station equipment

ETS 300 253, 1995 Earthing and bonding of telecommunication equipment

in telecommunication centres

Table 16. Electrical safety standards


EN 60950: 1992

A1:1992

A2: 1993

A3:1995

A4: 1996

IEC 950: 1991

A1:1992

A2: 1993

A3:1995

A4: 1996

Safety of Information Technology equipment, Including

Electrical Business Equipment + Amendments A1, A2, A3

and A4

UL1950: 1995, 3rd

edition

Standard for Safety of Information Technology equipment,

Including Electrical Business Equipment

FCC part 68 Rules for Registration of Telephone Equipment PART 68:

1995

GR-1089-CORE: 1994 Electromagnetic Compatibility and Electrical Safety-

Generic Criteria for Network Telecommunications

Equipment

EN 60215:1988

IEC 215: 1987

BS 3192

Safety requirements for radio transmitting equipment





Table 17. Product specific EMC standards

Standard DescriptionETS 300 342 2, 1994 Radio Equipment and Systems (RES); Electro-Magnetic

Compatibility (EMC) for European digital cellular

telecommunications system (GSM 900 and DCS 1800

MHz) Part 2: Base station and ancillary equipment

d-ETS 300 342-3:1997 Radio Equipment and Systems (RES); Electro-Magnetic

Compatibility (EMC) for European digital cellular

telecommunications system Part 3: Base station and

ancillary equipment and repeaters meeting Phase 2

GSM requirements

ETSI GSM 11.20

ETSI GSM 11.21

Standard for base station equipment

Standard for base station equipment

J-STD-007 Personal Communications Services; Air Interface

Specification Volume 1; Radio Path Physical Layer

TIA/EIA PN-3777 EMC specific

Table 18. Basic EMC standards based on d-ETS 300 342-3:1997


ETSI GSM 11.20ETSI GSM 11.21

Standard for base station equipment (microcell)Standard for base station equipment (macrocell)

EN 55022, class B, 1994

(IEC/CISPR 22, 1993)

EN 55022/A1:1995

Limits and methods of measurement of radio

interference characteristics of information technology

equipment

EN 61000-4-2: 1995

IEC 1000-4-2: 1995

Electromagnetic Compatibility (EMC) Part 4: Testing and

measurement techniques Section 2: Electrostatic

discharge immunity test Basic EMC publication

EN 61000-4-3: 1995

IEC 1000-4-3: 1995


measurement techniques Section 3: Radiated, radio-

frequency, electromagnetic field immunity test

EN 61000-4-4: 1995

IEC-1000-4-4: 1995


measurement techniques Section 4: Electrical fast

transient/burst immunity test Basic EMC publication





8.3.3 Environmental Standards

The environmental standards referred to in the designing of the Nokia MetroSiteGSM BTS are described in this section.

EN 61000-4-5: 1995

IEC-1000-4-5: 1995


measurement techniques Section 5: Surge immunity

test

EN 61000-4-6:1996

IEC 1000-4-6:1996


measurement techniques Section 6: Immunity to

conducted disturbances, induced by radio-frequency

fields

IEC 1000-4-11: 1994

EN 61000-4-11: 1994


measurement techniques Section 11: Voltage dips,

Short interruptions and Voltage variations immunity tests

Table 19. Additional EMC standards


FCC part 15

FCC part 24

FCC Rules for Radio Equipment Devices

Personal Communication Services

IEC 1000-3-2,

EN 60555-2

BS 5406 Part 2

Electromagnetic Compatibility (EMC) Part 3: Limits-

Section 2: Limits for harmonic current emission

(equipment input current ≤16A per phase)

IEC 1000-3-3: 1994

EN 61000-3-3: 1995

EN 60555-3: BS 5406

Electromagnetic Compatibility (EMC) Part 3: Limits-

Section 3: Limitation of voltage fluctuation and flicker in

low-voltage supply systems for equipment with rated

current ≤16A

IEC 1000-4-8: 1993 ElectromagneticCompatibili ty (EMC) Part 4: Testing and

measurement techniques Section 8: Power frequency

magnetic field immunity test Basic EMC publication

IEC 1000-4-9: 1993 ElectromagneticCompatibili ty (EMC) Part 4: Testing and

measurement techniques Section 9: Pulse magnetic

field immunity test Basic EMC publication

IEC 1000-4-10: 1993 Electromagnetic Compatibility(EMC) Part 4: Testing and

measurement techniques Section 10: Dampedoscillatory magnetic field immunity test Basic EMC

publication

Table 18. Basic EMC standards based on d-ETS 300 342-3:1997 (Continued)






8.3.4 Mechanical standards

The mechanical standards referred to in the designing of the Nokia MetroSiteGSM BTS are described in this section.

Table 20. Environmental standards

Standard DescriptionETS 300 019-1-1:1992

ETS 300 019-2-1:1994

Equipment Engineering (EE); Environmental conditions

and environmental tests for telecommunications

equipment Part 1-1: Classification of environmental

conditions: Storage



equipment Part 2-1: Specification of environmental

tests: Storage

ETS 300 019-1-2:1992

ETS 300 019-2-2:1994



equipment Part 1-2: Classification of environmentalconditions: Transportation




tests: Transportation

ETS 300 019-1-4:1992

ETS 300 019-2-4:1994



equipment Part 1-4: Classification of environmental

conditions Stationary use at non-weather protected

locations




tests: Stationary use at non-weather protected locations





8.3.5 Recommendations and standards

The standards and recommendations related to GSM base station interfaceequipment are described in this section.

Table 21. Mechanical standards

Standard DescriptionEN 60659

BS 5490

Degree of Protection Provided by Enclosures (IP Code)

ISO 3744, 1988 Acoustics Determination of sound power levels of noise

sources Engineering methods for special reverberation

test rooms

IEC 68-2-57: 1989 Environmental Testing Part 2: Test Methods Ff: Vibration

Time-history method.

GR-63-CORE:1995 Network Equipment-Building System (NEBS): Physical

Protection

Table 22. Flexbus interface


ITU-T G.704 (10/94) Synchronous frame structures used at primary and

secondary hierarchical levels

ITU-T G.706 (1991) Frame alignment and cyclic redundancy check (CRC)

procedures relating to basic frame structures defined in

Recommendation G.704

ITU-T G.823 (03/93) The control of jitter and wander within digital networks

which are based on the 2048 kbit/s hierarchy

ITU-T G.826 (08/96) Error performance parameters and objectives for

international, constant bit rate digital paths at or above

primary rate

ITU-T G.921 Digital sections based on the 2048 kbit/s hierarchy





Table 23. 2048 kbit/s E1 interface

Standard DescriptionCCITT (Blue Book)

• G.703

• G.704

• G.706

• G.711

• G.732

• G.736

• G.823

• G.826

• I.460

• Digital Interface Characteristics

• Functional Interface Characteristics

• CRC Multiframe structure

• PCM Coding Law

• Primary PCM Multiplexer

• Synchronous 2Mbit/s Digital Multiplexer

• Jitter and Wander

• Performance parameters

• Multiplexing, Rate Adaptation

GSM

• 03.50

• 08.51

• 08.52

• 08.54

• Transmission Planning Aspects

• BSC BTS Interface, General Aspects

• BSC BTS Interface Principles

• BSC BTS Interface Layer 1, Structure of

Physical Circuits

Table 24. 1544 kbit/s T1 interface


ANSI T1.403 and T1.102

ANSI T1.403

ANSI T1.403

AT&T TR 62411

Digital Interface Characteristics

Functional Interface Characteristics PCM

Coding Law Primary PCM Multiplexer

Synchronous 2Mbit/s Digital Multiplexer

Performance parameters

Jitter and Wander Multiplexing, Rate

Adaptation

metro site

Documents