RBS2308 Product Description-libre

EN/LZT 720 0327 Uen R2A

RBS 2308Micro RBS

RBS 2308 Product Description

The RBS 2308, a member of the RBS 2000 family, is a 4 TRX radio basestation for indoor or outdoor use.

P010083A

E 1 (34)

RBS 2308Micro RBS

Contents

1 Product Overview 4

1.1 Main Features 4

1.2 Variants 4

1.3 Optional Equipment 5

2 Dimensions 6

3 Space Requirements 8

4 Environment 9

4.1 Operating Environment 9

4.2 Environmental Impact 9

4.3 Materials 10

5 Output Power and Receiver Sensitivity 11

5.1 Output Power 11

5.2 Receiver Sensitivity 12

6 Hardware Units 13

6.1 Standard Hardware Units 13

6.2 Optional Hardware Units 14

7 Interfaces 17

7.1 External Connections 17

7.2 Internal Interface 24

7.3 OMT Interface 24

7.4 Operator interface 24

8 Power System 28

8.1 Power Supply 28

8.2 Battery Backup 29

8.3 Output Power 29

8.4 Power Consumption 29

9 Transmission 31

10 External Alarms 32

11 Standards, Regulations and Dependability 33

11.1 Safety Standards 33

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RBS 2308 Micro RBS

11.2 Other Standards and Regulations 33

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RBS 2308Micro RBS

1 Product Overview

The RBS 2308 is essentially an outdoor micro base station. I can, however, beused for both indoor and outdoor applications. The cabinet can be mounted onwalls, poles or masts.

The RBS 2308 is designed for use with BSS R9.1 or later. It supports GPRS(CS-1, CS-2, CS-3, and CS-4), HSCSD, and EGPRS in the Micro concept.

Main applications of the RBS 2308 are:

• Hot spots, adding supplementary coverage

• Providing EDGE capacity

• Public meeting places, supplying additional capacity in dense areas

• Replacement of existing RBS 2302 sites where higher capacity is required

1.1 Main Features

The RBS 2308 can support, among others, the following features:

• Scalable up to 12 TRXs

• EDGE

• External alarms

• Multidrop bypass

• Synchronisation using GPS

• -48 V DC output

• Synchronised networks

1.2 Variants

The RBS 2308 can support the following frequencies:

• GSM 800

• E-GSM 900

• GSM 1800

• GSM 1900

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RBS 2308 Micro RBS

1.3 Optional Equipment

The equipment listed below is available, but is not necessary for basic operation:

• Extended OMT cable

• Fan unit

• Integral Sector Antenna

• Integral Omni Antenna

• Mast-mounting fixtures

• Multicasting Box (MCB)

• RX Bandpass Filter (RXBP)

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RBS 2308Micro RBS

2 Dimensions

This section describes the RBS 2308 dimensions, space requirements andcolour.

Size and Weight

The dimensions of the basic RBS 2308 cabinet (without options) are shownin the figure and table below.

P010098C

610

224433

Unit of measurement: mm

Figure 1 RBS 2308 Dimensions

Use of optional equipment increases the dimensions of the cabinet, see thetable below.

Table 1 Dimensions for the RBS, With and Without Options

Dimension Basic RBS 2308 RBS 2308, MaximumDimensions

Height 610 mm 790 mm(1)

Width 433 mm 433 mm

Depth 224 mm 270 mm(2)

(1) With Integral Omni Antenna or Fan Unit.

(2) With RXBP or Integral Sector Antenna.

The weights of the RBS 2308 and of the major units to be handled are given inthe table below.

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Table 2 Weights of RBS 2308 and Major Units

Unit Weight

IXU 10 kg

MBU 6.5 kg

RRU 24 kg

Sunshield 1.5 kg

Total 42 kg

Colour

The RBS 2308 is available in grey (reference number NCS S2502–R).

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3 Space Requirements

The figure below shows the minimum space requirements for proper coolingduring operation, and the dimensions of the RBS in relation to the mountingbase. This information can be used to determine a suitable location withrespect to other equipment at the site.

No free space is needed at the back of the cabinet.

P010156A

Minimum space requirementsUnits of measurement: mm

250

30

0

250

500

25

0

50

0

RBS

58

7

139 180 114

14

52

25

21

7

433

500

Figure 2 Space Requirements

Mounting Base Holing Pattern

The mounting base of the RBS 2308 has the same holing pattern as that of theRBS 2302 mounting base, see Figure above.

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4 Environment

This section provides an overview of the operating environment, environmentalimpact, and materials used in the RBS 2308.

4.1 Operating Environment

The operational temperature limits of the RBS 2308 depend upon the powersupply and whether or not the fan unit is used, see tables below.

Table 3 Start-Up and Operational Requirements Using AC Power

RBS 2308 Variant Temperature Range Relative Humidity

Without optional fanunit

-33 C to +45 C 15 – 100%

With optional fan unit -33 C to +55 C 15 – 100%

Table 4 Start-Up and Operational Requirements Using DC Power

RBS 2308 Variant Temperature Range Relative Humidity

Start-up 0 C to +45 C 15 – 100%

Operational, withoutoptional fan unit

-15 C to +45 C 15 – 100%

Operational, withoptional fan unit

-15 C to +55 C 15 – 100%

Temperature limits for transport, storage and handling of the RBS 2308 aregiven in the table below.

Table 5 Transport, Storage and Handling Climatic Requirements

Condition Temperature Range Relative Humidity

Transport -40 C to +70 C 5 – 100%

Storage -25 C to +55 C 10 – 100%

Handling -40 C to +70 C 5 – 100%

4.2 Environmental Impact

This section describes the effects that the cabinet has on the environment.

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Heat Dissipation

Maximum heat dissipation of the RBS 2308 is given in the table below. Theexact figures are dependent upon configuration, equipment and site-specificconditions.

Table 6 Maximum Heat Dissipation

Cabinet Configuration Maximum Heat Dissipation

Master Cabinet (IXU + RRU) 240 W

Extension Cabinet (RRU) 220 W

Acou stic Dispersion

The RBS 2308 cabinet does not contribute to the acoustic noise of itssurroundings.

The optional fan unit generates acoustic noise. The maximum sound power ofthe fan unit is given in the table below.

Table 7 Sound Power Level

Ambient Temperature Sound Power Level

<30 C 5.5 Bel

Maximum operating temperature 6.0 Bel

4.3 Materials

All Ericsson products fulfil the legal, market, and Ericsson requirementsregarding:

• Fire resistance of material, components, wires and cables

• Declaration of materials

• Use of restricted materials

• Recycling

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RBS 2308 Micro RBS

5 Output Power and Receiver Sensitivity

The figures in this Section are valid under the following circumstances:

• Normal temperature (15-30 C)

• Multipath Typical Urban 50 km/h (TU50)

• The output power is measured at the cabinet jumper/feeder connector(ARP)

Note: Receiver diversity improves the receiver sensitivity values at least 4 dBin faded channels and 2.2 dB in static channels.

5.1 Output Power

The following estimated output power is valid for RBS 2308:

Table 8 Estimated Output Power

Frequency Output Power

GSM 800 34.0 dBm

E-GSM 900 34.0 dBm

GSM 1800 33.5 dBm

GSM 1900 33.5 dBm

Output Power for 8 PSK Modulation

The peak output power levels are identical for GMSK and 8 PSK at the highestpower setting. This corresponds to an average output power that is 3.3 dBlower for 8 PSK than for GMSK.

The average output power for 8 PSK modulation is reduced compared withGMSK modulation according to the following:

Table 9 Output Power for 8 PSK Modulation Compared with GMSKModulation

Power Level Output Power Difference

Power level P0 -3.3 dB

Power level P1 -1.3 dB

All other power levels 0 dB (= no difference)

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5.2 Receiver Sensitivity

The RBS 2308 has the following receiver sensitivity, excluding diversity gain:

Table 10 Estimated Receiver Sensitivity

Frequency Receiver Sensitivity

GSM 800 -108.0 dBm

E-GSM 900 -108.0 dBm

GSM 1800 -108.0 dBm

GSM 1900 -108.0 dBm

Receiver Sensitivity for Packet Data Channels

The receiver sensitivity for packet data channels (PDCH), excluding diversitygain, are summarized in the table below. The table shows the margin(improvement) compared with the 3GPP TS 45.005 standard.

Table 11 Receiver Sensitivity for PDCH Compared with the 3GPP TS 45.005Standard

Packet Data Channels 3GPP TS 45.005

GPRS CS 1-2 5 dB

EGPRS MCS 1-4 5 dB

EGPRS MCS 5-9 4 dB

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6 Hardware Units

A high level of availability is achieved using strict functional modularity in asystem of standardised Replaceable Units (RUs). A faulty RU can easily bereplaced by a new one.

P010530B

TIM

MCB

Sunshield

RRU Flash Card

Sunshield Screws

IXU (RBS 2308 Master)

MBU

RXBP

Fan Unit

Figure 3 RBS 2308 Overview

6.1 Standard Hardware Units

This section briefly describes the standard hardware units required foroperation.

Flash Memory Card

All loadable software and the IDB are stored on this card. The card contains allinformation for configuring replacement units if an IXU is exchanged.

Number of units: 1

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IXU — Interface and Switching Unit

The IXU is in the central control unit for one RBS. All switching of traffic isperformed in the IXU. The IXU has integrated power supply and climate control.The Flash Memory Card, the TIM, and all external interfaces except AC/DCpower, antennas and the fan unit are located on the IXU.

Number of units: 1

MBU — Mounting Base Unit

The MBU is the mechanical mounting interface for the RBS 2308. It alsocontains the interface for the main power supply, and provides surge andtransient protection for incoming lines. Circuit breakers for primary power and aswitch for RRU power are located here.

Number of units: 1 – 4

RRU — Remote Radio Unit

The RRU contains the transceivers; it handles the combining and distributingfunctions for the RBS 2308. The RRU has integrated power supply and climatecontrol. The interfaces to the antennas and to the fan unit are located on theRRU.

Number of units: 1 – 3

Sunshields

The sunshields reduce heat from direct solar radiation and provide a lockablecover to the RBS 2308.

Number of units: 1 top, 1 front and 2 side panels per cabinet.

TIM — Transmission Interface Module

The TIM provides an interface to various transmission standards. DifferentTIMs can be defined for different standards. Currently only E1/T1 is supported.

Number of units: 1

6.2 Optional Hardware Units

This section describes the RBS 2308 optional hardware units.

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Fan Unit

The fan unit provides addtional cooling to the RBS 2308. It is located on topof the RBS, on the RRU. The fan unit is controlled by the RRU and receivespower from it.

Note: RBS 2308 cannot be equipped with fan unit if equipped with integralomni antenna.

Number of units: 0 – 1 per RRU

Integral Omni Antenna

The integral omni antenna is mounted on top of the RRU.

Note: RBS 2308 cannot be equipped with integral omni antenna if equippedwith fan unit.


Integral Sector Antenna

The integral sector antenna is mounted on the front of the RRU, behind theSunshield.


MCB – Multicasting Box

The multicasting box provides a single feeder interface for an externalantenna/antenna system. Under certain conditions, the multicasting optionenables the connection of two antennas/antenna systems for extension of thecell. This configuration would expand the cell to different floors in a buildingor into a tunnel.

The second antenna output on the multicasting box is normally connected toan internal 50 load. As an alternative, a second antenna system can beconnected to the output.

The MCB units can be connected to the RRU.


RXBP – RX Bandpass Filter

The RXBP filters two incoming RX signals, filtering out frequencies outsidethe RX spectrum.

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External RXBP is required for certain radio configurations:

• E-GSM 900 and GSM 1800, to provide two extra RX signals to achieve RXdiversity when the RRU is divided between two cells

• GSM 800 and GSM 1900, to provide two RX signals when the RRU isconfigured with separate TX and RX signals (simplex mode)


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7 Interfaces

In this section, all external and internal connections are listed, as well as thetest interface and the operator interface.

P010099C

External

. Ext. alarms

. GPS/AUX

. OMT

. -48 V DC output

. TXL bus

. Transmission

. Power supply

Internal

RRU

MBU IXU

Fan Unit

. Antennas

Y link

Figure 4 Internal and External Interfaces

7.1 External Connections

Most external connectors enter the cabinet through the bottom. The earthingconnection is located on the top of the MBU, and the OMT connection is on theside of the IXU.

External connections for the RBS 2308 include the following:

• Antenna interface

• AC mains and earthing interface

• DC power supply

• Transmission interface

• External alarm interface

• OMT interface

• GPS/AUX signalling interface

• -48 V DC output

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Antenna Connections

Antenna connections are made at the bottom of the RRU, and/or at the optionalunits MCB and RXBP.

P010113A

AC/DC power TX(/RX)2

TX(/RX)1

RXBP2

RXBP1

Figure 5 RRU Antenna Connections

Table 12 Antenna Connections Ports on the RRU

Connector Type of Connector Signal

TX(/RX)2 N (female) TX/RX or TX

RXBP2 TNC (female) RX

RXBP1 TNC (female) RX

TX(/RX)1 N (female) TX/RX or TX

P010139A

ANT 1

ANT 2

TX(/RX)

LOAD

TX(/RX)

MCB800

900

Figure 6 MCB Antenna Connection Ports

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Table 13 Antenna Connections Ports on the MCB

Connector Type of Connector

TX(/RX) top N (male)

TX(/RX) side N (female)

Load N (female)

Ant 1 N (female)

Ant 2 N (female)

P010138A

RXBP

RX 2

RX 1

RXBP 2

RXBP 1

Figure 7 RXBP Antenna Connection Ports

Table 14 Antenna Connections Ports on the RXBP

Connector Type of Connector

RX2 N (female)

RXBP2 TNC (female)

RX1 N (female)

RXBP1 TNC (female)

Transmission

The RBS 2308 has four transmission ports, located in the IXU, see figure below.

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P010599A

PORT A PORT C PORT B PORT D

TIM

4 Transmission ports

Figure 8 Location of Transmission Ports in IXU

For connection parameters, see the table below.

Table 15 Transmission Connection Parameters

Type of connector 6–pin, 2.5 mm2 each

Cable gland capacity 6 – 10 mm diameter

Grounding Transmission wire screen is grounded. Receivewire screen can be grounded.

External Alarms

The RBS 2308 is equipped with four external alarms, located in the IXU, seefigure below. For external alarm parameters. See Table 16 on page 21.

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P010597A

External alarms

Figure 9 Location of External Alarms in IXU

Table 16 External Alarm Connection Parameters

Type of connector Terminals for 8 x 2.5 mm2 conductors

Cable gland capacity 6 – 10 mm diameter

Number of alarms 4

-48 V DC Output

The RBS 2308 can supply -48 V DC output power, see Section 8.3 OutputPower on page 29.

The -48 V DC output interface is located on the IXU, see figure below.

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P010596B

-48 V DC Output

Figure 10 Location of -48 V DC Output Power Supply in IXU

Parameters for the -48 V DC output power supply are given in the table below.

Table 17 -48 V DC Output Power Supply Connection Parameters

Type of connector Terminals for 2 x 2.5 mm2 (maximum)

Cable gland capacity 6 – 10 mm diameter (Quantity: 1)

MBU External Connections

The RBS power supply interface, AC and DC, is located in the MBU.

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Table 18 MBU External Connections

ConnectionLocation

Connection to Type of Connector

AC Mainsconnections

Screw terminal for 2 x 5.26 mm2

(maximum) conductors; cable glandcapacity 14 mm diameter

DC supplyconnections

Screw terminal for 2 x 5.26 mm2

(maximum) conductors; cable glandcapacity 14 mm diameter

PE Screw terminal for 1 x 5.26 mm2

(maximum) conductor

MBU

Earthingconnection

M8 screw terminal, on the top of theMBU

GPS/AUX

The GPS/AUX interface on the IXU is used for synchronisation with GPS andfour optional alarms. For more information about optional alarms, see Section10 External Alarms on page 32.

Table 19 MBU External Connections

ConnectionLocation

Connection to Type of Connector

IXU GPS/AUX(synchronisationand/or alarms)

15 pin D-sub HD, female; see Figure11 on page 23.

P010598B

GPS/AUX

Figure 11 GPS/AUX Connection Port on IXU

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7.2 Internal Interface

The RBS 2308 uses a Y-link internal interface between the IXU and the RRUs.

The maximum Y-link cable length is 5 m.

7.3 OMT Interface

The OMT interface for RBS 2308 is located on the right side of the IXU. It is a9–pin D-sub (female) connector.

An optional extended OMT cable (20 m) can be installed with the RBS, foreasy access to the OMT port.

7.4 Operator interface

The Man-Machine Interface (MMI) in the RBS 2308 is comprised of indicatorsand buttons located on the hardware units in the cabinet.

RRU

The table below describes buttons found on the RRU.

Table 20 RRU Buttons

Button Description

RRU reset Resets the RRU

Local/Remote Changes mode between local and remote

The table below describes the RRU indicators, and their meaning when theindicator is on.

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Table 21 RRU Indicators

Indicator Colour Description

Fault Red Fault detected on the RRU

Operational Green At least one TRX is operational inthe RRU

Local Yellow RRU is in local mode

RF off Yellow No RF to antennas

AC power on Green AC power supply within operationalrange

DC power on Green DC power supply within operationalrange

RRU temp. Yellow RRU internal temperature is out ofrange

P010111B

RRU-M EDGE

RRU reset

Fault

Operational

Local

RF off

Local/Remote

AC power on

DC power on

RRU temp.

Figure 12 RRU Interface Panel

IXU

The table below describes buttons found on the IXU.

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Table 22 IXU Buttons

Button Description

IXU reset Resets the IXU and all subunits

Local/Remote Changes mode between local and remote

The table below describes the IXU indicators, and their meaning when theindicator is on.

Table 23 IXU Indicators

Indicator Colour Description

Fault Red Fault detected on the IXU

Operational Green IXU is operational

Local Yellow IXU is in local mode

RBS fault Yellow RBS fault detected

External alarm Yellow One or several external alarmsactive in the RBS

EOM bus fault Yellow Only present on early delivered IXUs

AC power on Green AC power supply within operationalrange

DC power on Green DC power supply within operationalrange

IXU temp. Yellow IXU internal temperature is out ofrange

Transmission OK:Port A

Green Transmission is OK – layer 1

Transmission OK:Port B


Transmission OK:Port C


Transmission OK:Port D


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P010600B

Local/Remote

IXU temp.

IXU-21

IXU reset

Fault

Operational

Local

RBS fault

AC power on

DC power on

Ext. alarm

Transmission OK

Port A

Port B

Port C

Port D

Local/Remote

IXU temp.

IXU-21

IXU Reset

Fault

Operational

Local

RBS fault

AC power on

DC power on

Ext. alarm

EOM bus fault

Transmission OK

Port A

Port B

Port C

Port D

Early delivery

Figure 13 IXU Interface Panel

MBU

The table below describes switches found on the MBU.

Table 24 MBU Switches

Switch Description

AC on/off AC power on or off to the RBS

DC on/off DC power on or off to the RBS

RRU on/off AC/DC Power on/off to the RRU

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8 Power System

This section provides information on the power system of the RBS 2308.

The main characteristics of the RBS 2308 power supply are:

• AC power as only power source

• AC power with DC power as backup

• DC power as only power source

8.1 Power Supply

AC Mains Supply Voltage

The RBS 2308 supports the following AC power distribution systems:

• TN

• TT

• IT

The AC voltage range is 100-127 V AC and 200–250 V AC with frequency50/60 Hz.

The following fuses/circuit breakers (CB) are recommended for AC mainspower supply, for each cabinet.

Table 25 Mains Fuses/CBs Recommendation

Cabinet Orientation Recommended Fuse Rating, AC Supply

Vertical 16 A, C-curve

Horizontal(1) 20 A, C-curve

(1) Horizontal mounting requires forced airflow over the RBS’s cooling fins.

DC Power Supply

The RBS 2308 supports the following DC power distribution systems:

• 2–wire connection

• 3–wire connection

Note: For multiple cabinet configurations with a 2–wire DC supply, an extraearthing cable must be connected between the cabinets.

The DC voltage range is -40.5 to -57.0 V DC.

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The following fuses/CBs are recommended for DC power supply.

Table 26 DC Supply Fuses/CBs Recommendation

Cabinet Orientation Recommended Fuse Rating, DC Supply

Vertical 20 A, C-curve

Horizontal(1) 25 A, C-curve

(1) Horizontal mounting requires forced airflow over the RBS’s cooling fins.

8.2 Battery Backup

The RBS 2308 supports an external battery backup. External alarms can beused to supervise the external battery backup.

8.3 Output Power

The RBS can supply -48 V DC output power according to the table below:

Table 27 Output Power Characteristics

Output voltage -48 V DC

Maximum output power 35 W

Connector type Terminals 2 x maximum 2.5 mm2

Cable gland capacity 6 – 10 mm diameter (Quantity:1)

8.4 Power Consumption

The power consumed by the RBS 2308 in both normal operation and withheating is given in the table below.

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Table 28 Power consumption

CabinetConfiguration

PowerSupply

NormalOperation

Start-UpofHeating

ContinousHeating

200–250 V AC 270 VA 2300 VA 1050 VA

100–127 V AC 240 VA 1350 VA 1100 VA

Master Cabinet(IXU + RRU)

-48 V DC 240 W n/a(1) n/a(1)

200–250 V AC 240 VA 1850 VA 900 VA

100–127 V AC 220 VA 1050 VA 950 VA

ExtensionCabinet (RRU)

-48 V DC 220 W n/a(1) n/a(1)

(1) Heater is fed by AC power. No heating with DC power supply.

The RBS 2308 can also supply power to various external pieces of equipment.The additional power consumed in supplying external equipment is given inthe table below.

Table 29 Additional Power Consumption for Various Options

Option Additional Power Consumption

Fan Unit 10 VA

MINI-LINK E Micro 30 VA

-48 V DC output, 35 W 50 VA

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9 Transmission

The RBS 2308 supports the E1 and T1 transmission compliant with the G.703standard.

Characteristics of the E1 standard are:

• 2048 kbit/s

• 75 or 120

Characteristics of the T1 standard are:

• 1544 kbit/s

• 100

For more information about transmission, see:

BSS R10 Software Reference Manual EN/LZT 720 0065

Multidrop

Up to ten RBSs can be cascaded using multidrop.

RBS 2308 is equipped with multidrop bypass relays. RBSs connecteddownstream to a faulty RBS 2308 can still receive transmission.

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10 External Alarms

The RBS 2308 supports a maximum of four external alarms, located on the IXU.

The RBS 2308 also supports four optional alarms, only supported together withequipment defined by Ericsson. These are connected through the GPS/AUXinterface on the IXU and are defined in the IDB in a similar way as for externalalarms.

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11 Standards, Regulations and Dependability

In this section a brief overview of standards, type approval and electromagneticcompatibility are stated.

11.1 Safety Standards

In accordance to the market requirements, the RBS 2308 complies with thefollowing product safety standards:

• 73/23/EEC Low voltage directive

• IP 55 according to IEC 60529

• EN 60950 / IEC 60950 (third edition)

• EN 60215 / IEC 60215

• UL 60950 (third edition), harmonised with CSA C22.2 No. 60950–00

• Enclosure type 3R class according to UL 50 and CSA C22.2 No. 94

11.2 Other Standards and Regulations

Marking

The product is marked with signs to show compliance with product safetystandards.

Type Approval Standards

The RBS 2308 complies with the European Community and the North Americamarket requirements regarding radio performance. The product has the CE andFCC signs to show compliance to the legal requirements in respective regions.

Electromagnetic Compatibility (EMC)

The RBS 2308 complies with the European Community and the North Americamarket requirements regarding EMC. The product has the CE and FCC signsto show compliance to the legal requirements in respective regions.

For more information, see Chapter EMC Capabilities.

Dependability

The RBS 2308 is designed for a technical lifetime of 20 years (24–houroperation) at an average ambient temperature of +25 C.

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Ericsson ABSE-164 80 StockholmSweden

[email protected]

No part of this document may be reproduced in any form withoutthe written permission of the copyright owner.

The contents of this document are subject to revision withoutnotice due to continued progress in methodology, design andmanufacturing. Ericsson shall have no liability for any error or

damage of any kind resulting from the use of this document.© Ericsson 2003 — All Rights Reserved

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RBS2308 Product Description-libre

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