Ericsson RBS 2207 Specifiche tecniche

EN/LZT 720 0134 Uen R3A

RBS 2207

Radio Base Station

Product Description

The RBS 2207, a member of the RBS 2000 family, is a 6–TRX radio base

station for indoor applications. This cabinet covers the same floor area as the

RBS 2202 and RBS 2206, but the cabinet height is lower.

P010987A

1 (24)

RBS 2207

Contents

1 Product Overview 3

1.1 Main Features 3

1.2 Variants 3

1.3 Optional Equipment 4

2 Dimensions 4

3 Space Requirements 4

4 Environment 7

4.1 Operating Environment 7

4.2 Environmental Impact 8

4.3 Compliance Distances for Electromagnetic Exposure 8

4.4 Materials 11

5 Hardware Units 11

5.1 Standard Hardware Units 12

5.2 Optional Hardware Units 14

6 Interfaces 15

6.1 External Connections 16

6.2 Test Interface 17

6.3 Operator Interface 17

7 Power System 18

7.1 AC mains supply voltage 18

7.2 +24 V DC Supply Voltage 19

7.3 -48 to -60 V DC Supply Voltage 20

7.4 Battery Back-up 20

7.5 Power Consumption 21

8 Transmission 21

9 Alarms 22

10 Standards, Regulations and Dependability 22

10.1 Safety Standards 22

10.2 Other Standards and Regulations 22

2 (24) EN/LZT 720 0134 Uen R3A

RBS 2207

1 Product Overview

The RBS 2207 is a medium capacity indoor base station. It is used for indoor

applications, with up to three double Transceiver Units (dTRU). The RBS 2207

is designed to be transported as a fully-assembled cabinet to the site. All

interior units are easily accessible from the front of the cabinet, which means

that the cabinets can be mounted side by side with their backs against a wall.

1.1 Main Features

The RBS 2207 can support the following features:

• 1, 2 or 3 sectors in one cabinet using CDU-G and/or CDU-J

• Discontinuous transmission/reception

• Duplex filters

• Dynamic power regulation

• Encryption/ciphering

• EDGE

• Expansion by tranceiver group (TG) synchronization

• External alarms

• Frequency hopping

• Global positioning system (GPS) synchronization

• Radio configurations supported on 800, 900, 1800 and 1900 MHz

• Receiver diversity

• Transmission Interface: The following transport network interface

alternatives exist:

- T1 1.5 Mbit/s, 100 , with internal synchronization

- E1 2 Mbit/s, 75 , with PCM synchronization

- E1 2 Mbit/s, 120 , with PCM synchronization

• Wide range power input 120 - 250 V AC

• Wide range power input -48 to -60V DC

1.2 Variants

There are three RBS 2207 cabinet versions:

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EN/LZT 720 0134 Uen R3A

RBS 2207

• -48 to -60 V DC

• 120 - 250 V AC, 50 to 60 Hz, +24 V DC, with optional battery back-up

• +24 V DC (without PSUs)

1.3 Optional Equipment

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

functionality.

• Battery back-up (in a separate cabinet)

• Bias injectors

• dual duplex Tower Mounted Amplifier (ddTMA)

• External synchronization bus (ESB)

• Distribution Frame (DF) with OVP

• TMA-CM

• Transmission Adapter (TA)

• GPS receiver

2 Dimensions

The following section describes the measurements of the RBS 2207.

Table 1 Weight

Unit Weight

RBS cabinet (fully equipped including

base frame)

180 kg (397 lbs.)

Base frame 8 kg (18 lbs.)

Table 2 Color

Color Reference No.

Grey NCS 1002-R

3 Space Requirements

The following sections indicate the required space and recommended floor

layout.

4 (24) EN/LZT 720 0134 Uen R3A

RBS 2207

Free Space above the RBS Cabinet

P010922A

1300

Min. 1600

Min.250

400

600

Min. 300

1350

Figure 1 RBS 2207, free space above the cabinet

The recommended distance between the cabinet and cable ladder is 250 mm.

A shorter distance makes it difficult to exchange fans and may restrict the air

flow. A space of 300 mm is recommended above the cable ladder, in order to

simplify the cable installation work.

The door projects 70 mm in front of the cabinet.

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RBS 2207

Layout for RBS Cabinets

P007781A

1000

Unit of measurement: mm

RBS

BBS

a=130o

Figure 2 Floor layout and space requirements

The RBS cabinets and battery back-up system (BBS) racks are mounted on

the floor, and may be positioned against a wall, back to back, or free standing

without contact with other cabinets.

Additional cabinets and racks can be positioned to the left or right of the first

installed cabinet. However, expansion to the right is recommended in order

to follow the same global standard.

A distance of 1000 mm in front of the cabinets and racks for maintenance work

is recommended.

Note: Space for future expansion must be considered as indicated in the

dotted line in the figure above.

Earthquake Requirements

If the RBS cabinet is to fulfill the requirements for earthquake protection, the

space between wall and cabinet is to be at least 100 mm and between cabinets

at least 150 mm.

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RBS 2207

Footprint

Unit of measurement: mm

P010951A

(RBS 2202)

FRONT

99 400

598

220

320 400

o 20x75

RBS 2206 / RBS 2207

Figure 3 Hole pattern overview

The RBS 2207 has the same footprint as the RBS 2202 and 2206 cabinets.

The base frame can be used as a template to mark new holes. If an RBS

2202 or an RBS 2206 is being replaced by an RBS 2207, the holes for the old

cabinet can be used for the new cabinet.

4 Environment

The RBS 2207 is designed to operate within limits stated for climatic

requirements, and also to have a limited effect on the environment.

4.1 Operating Environment

The climatic requirements the RBS 2207 has on the site are shown in the

table below.

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EN/LZT 720 0134 Uen R3A

RBS 2207

Table 3 Environmental specifications

Environmental

Parameters

Normal Operation

(1) Safe Function Non-

destructive

Conditions (2)

Temperature +5 to +40 C 0 to +45 C -10 to +55 C

Relative Humidity 5 - 85% 5 - 90% 5 - 90%

(1) Normal operation describes the environmental conditions where all units function as specified.

(2) Non-destructive conditions describe environmental stress above the limits for normal

conditions with no function guaranteed and unspecified degradation. When the environmental

stress has dropped to normal conditions, restoring full RBS performance requires no manual

intervention on site. Non-destructive conditions refer to a maximum period of 96 consecutive

hours, and a maximum total of 5.5 days in a three-year period.

Ground Vibrations

The RBS 2207 is tested to withstand random vibrations of up to 0.2 m²/s². It is

also tested for single shocks up to 40 m/s². The cabinet is tested for seismic

exposure with a test frequency of 1 - 35 Hz. Maximum test level of the Required

Response Spectrum (RRS) is 50 m/s² within 2 - 5 Hz. The shape of RRS is

defined by the ETSI standard.

Levelling

For cabinet levelling purposes, the floor must be level to within ±3 mm/2000

mm and the floor gradient be within ±0.1 .

4.2 Environmental Impact

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

Heat Dissipation

The RBS 2207 generates an average heat load of 1000 W. The exact figure is

dependent upon confguration, equipment and site-specific conditions.

4.3 Compliance Distances for Electromagnetic Exposure

The compliance distance is the minimum separation that should be kept

between an antenna and a person in order to ensure that ICNIRP RF exposure

limits are not exceeded.

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RBS 2207

Note: ICNIRP, ‘‘Guidelines for limiting exposure to time-varying electric,

magnetic, and electromagnetic fields (up to 300GHz)’’, International

Commission on Non-Ionizing Radiation Protection, Health Physics,

vol. 74, no. 4, 1998.

Ericsson has performed a free-space near-field RF exposure assessment

of typical configurations of RBS 2207 with a recommended antenna. The

resulting dimensions, in meter, for a compliance boundary for both public and

occupational exposure are shown in Table 4.

The compliance boundary is defined as a cylinder around the antenna, see

figure below. The antenna is not located at the centre of the cylinder. Instead

it is located almost at the edge, facing towards the center of the cylinder.

The distance between the antenna’s rear and the edge of the cylinder is the

"Distance behind antenna". The height of the cylinder is the antenna height

plus equal distances above and below the antenna. The cylinder shape

overestimates the compliance distances right beside the antenna.

P009694A

Diameter

Height

Antenna

Distance

behind

antenna

Figure 4 Compliance boundary cylinder

Note: Table 4 shows an example for a typical antenna. As the antenna field

distributions will differ, complete calculations or measurements may

be necessary in order to establish the compliance boundary for other

configurations chosen by the customer. For further information on

calculation methods, see:

Radio Site Installation Engineering

Manual EN/LZN 720 0069

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EN/LZT 720 0134 Uen R3A

RBS 2207

Table 4 Compliance boundary dimensions for the general public (GP) and

occupational (O) exposure for typical configurations.

Dimensions of cylindrical compliance boundary in

meter (m)

Diameter Height Distance

behind

Fre-

quency

(MHz)

RBS con-

figuration

GP O GP O GP O

900 3x2 un-

combined

7 3 1.7 1.4 0.1 0.1

1800 3x2 un-

combined

5 1 1.6 1.4 0.1 0.05

900 3x2

combined

4 1 1.5 1.4 0.1 0.1

1800 3x2

combined

2 0.5 1.4 1.4 0.1 0.05

900 3x1 comb.

TCC

6 3 1.7 1.4 0.1 0.1

1800 3x1 comb.

TCC

5 1 1.6 1.4 0.1 0.05

Compliance distances to the side of the antenna for occupational exposure

are 0.15 m for all configurations above. For characteristics of an antenna

recommended for typical configurations of an RBS 2207, see Table 5.

Table 5 Characteristics for a typical antenna (KRE 101 1916/1)

Antenna specifications X-pol macro RBS sector antenna

Antenna height 1.3 m

Horizontal half-power beam width 65 degrees

Vertical half-power beam width 14.5 degrees at 900 MHz, 7.8 degrees

at 1800 MHz

Antenna gain 14 dBi at 900 MHz, 16.5 dBi at 1800

MHz

Downtilt 0 degrees

The maximum power fed to the antenna, as a function of the number of

transceiver units (TRUs) per antenna and maximum power (including tolerances

and transmission loss) per TRU, for RBS 2207, are given in Table 6.

10 (24) EN/LZT 720 0134 Uen R3A

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