Flexi WCDMA BTS RF Module and RRH Description

Nokia Siemens Networks WCDMA RAN, Rel. RU10, System Library, v. 2

Flexi WCDMA BTS RF Module and Remote Radio Head Description

DN7085361 Issue 7-3 en 30/04/2009

# NokiaSiemensNetworks

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The information in this document is subject to change without notice and describes only the product defined in the introduction of this documentation. This documentation is intended for the use of Nokia Siemens Networks customers only for the purposes of the agreement under which the document is submitted, and no part of it may be used, reproduced, modified or transmitted in any form or means without the prior written permission of Nokia Siemens Networks. The documentation has been prepared to be used by professional and properly trained personnel, and the customer assumes full responsibility when using it. Nokia Siemens Networks welcomes customer comments as part of the process of continuous development and improvement of the documentation. The information or statements given in this documentation concerning the suitability, capacity, or performance of the mentioned hardware or software products are given as is and all liability arising in connection with such hardware or software products shall be defined conclusively and finally in a separate agreement between Nokia Siemens Networks and the customer. However, Nokia Siemens Networks has made all reasonable efforts to ensure that the instructions contained in the document are adequate and free of material errors and omissions. Nokia Siemens Networks will, if deemed necessary by Nokia Siemens Networks, explain issues which may not be covered by the document. “

”

Nokia Siemens Networks will correct errors in this documentation as soon as possible. IN NO EVENT WILL NOKIA SIEMENS NETWORKS BE LIABLE FOR ERRORS IN THIS DOCUMENTATION OR FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO SPECIAL, DIRECT, INDIRECT, INCIDENTAL OR CONSEQUENTIAL OR ANY LOSSES, SUCH AS BUT NOT LIMITED TO LOSS OF PROFIT, REVENUE, BUSINESS INTERRUPTION, BUSINESS OPPORTUNITY OR DATA, THAT MAY ARISE FROM THE USE OF THIS DOCUMENT OR THE INFORMATION IN IT. This documentation and the product it describes are considered protected by copyrights and other intellectual property rights according to the applicable laws. The wave logo is a trademark of Nokia Siemens Networks Oy. Nokia is a registered trademark of Nokia Corporation. Siemens is a registered trademark of Siemens AG. Other product names mentioned in this document may be trademarks of their respective owners, and they are mentioned for identification purposes only. Copyright © Nokia Siemens Networks 2009. All rights reserved.

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Contents

Contents Contents

3

Summary of changes

5

1

RF Module and Remote Radio Head operation and main blocks 7

2

RF Module and Remote Radio Head power requirements 19

3

RF Module and Remote Radio Head dimensions and weights 23

4

RF Module interfaces 2 5

5

Remote Radio Head interfaces 27

6

RF Module and Remote Radio Head LED indications 31

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Summary of changes

Summary of changes

Changes between document issues are cumulative. Therefore, the latest document issue contains all changes made to previous issues. Changes between issues 7-2 and 7-3 Section RF Module and Remote Radio Head operation and main blocks updated. Section RF Module and Remote Radio Head power requirements updated. Section Remote Radio Head interfaces updated with information on the optional Flexi RRH DC connection box (FPOC). Changes between issues 7-1 and 7-2 Weights of the FRGG updated in section RF Module and Remote Radio Head dimensions and weights . Table Remote Radio Head (FRGG) interfaces in section Remote Radio Head interfaces updated. FRGN-related information removed. Editorial changes made. Changes between issues 7-0 and 7-1 Changes made between issues 6-0 and 6-1 added. Information on 3GPP and AISG 2.0 interfaces added to section RF Module and Remote Radio Head operation and main blocks . Table Power consumption of the Remote Radio Head (FRGG) in section RF Module and Remote Radio Head power requirements updated.

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RF Module and Remote Radio Head operation and main blocks

1

RF Module and Remote Radio Head operation and main blocks The RF Module and Remote Radio Head (RRH) are stand-alone fully operational transceiver modules with integrated antenna filters. The RF Module is able to support one to three sectors, whereas the RRH supports one sector in a Flexi WCDMA base station. The RF Module and RRH host the RF functionality and provide control and power supply to the Flexi Antenna Line. Radio-related signal processing is performed in the RF Module. The RF Module has integrated fans and Bias-Ts. The RRH does not have any fans. There are three types of RF Modules available: .

Triple RF Module

.

Dual RF Module

.

Single RF Module

For detailed information on delivery contents, see Contents of the RF Module Delivery in the Installing Flexi WCDMA BTS Modules for Stack, Wall, and Pole Configurations document.

Caution Incorrect cables and seals may not provide secured weather protection. In outdoor installations, including the outdoor cabinet, use only tested, at least IP55 class outdoor antenna jumper cables provided by Nokia Siemens Networks. This is also recommended for indoor installations. The following versions of the RF Module and Remote Radio Head are available:

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Table 1.

RF Module versions

Version

Description

FRIA

Dual50W1700/2100

FRIB

Single50W1700/2100

FRGC

Dual50W2100

FRGD

Single50W2100

FRGJ

Dual50W2100

FRGK

Single50W2100

FRGL

Dual50W2100

FRGM

Single50W2100

FRCA

Dual50W850

FRCB

Single50W850

FRDA

Dual50W900

FRDB

Single50W900

FRFA

Dual50W1900

FRFB

Single50W1900

FRGF

Triple70W2100

Table 2.

RRH versions

Version

Description

FRGG

RRH70W2100

RF Module operation See the following figures for exploded views of the RF Module.

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Back cover

Casing

Fan carrier

Module core

External cable entry Front cover DN70550467

Figure 1.

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Exploded view of the RF Module (Triple)


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Back cover

Casing

Module core

Fan carrier

Cable support plate

External cable entry

Front cover DN70153211

Figure 2.

Exploded view of the RF Module (Dual)

The RF Module can support one to three sectors with the following integrated components:

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.

.

Transceivers with TX for two carriers (three transceivers in the Triple RF Module, two in the Dual and one in the Single RF Module) Transceivers with RX for two carriers with diversity (the carriers must be adjacent) (three transceivers in the Triple RF Module, two in the Dual and one in the Single RF Module)

.

Linear power amplifiers (three in the Triple RF Module, two in the Dual and one in the Single RF Module) .

.

.

RF filters with main and div branch (three in the Triple RF Module, two in the Dual and one in the Single RF Module) 48 V DC input power supply Masthead amplifier and 3GPP Antenna tilt power feed and control for up to three sectors

.

Interface to the System Module

.

Interface for chaining System Modules (Triple RF Module only)

.

Integrated fan assembly (two fans)

.

Full operational bandwidth support

.

Antenna connector interfaces

.

Prepared for AISG2.0

The Triple RF Module has three independent transceivers each composed of one transmitter chain and two independent uplink chains to implement uplink diversity. The unit integrates an antenna filter unit that contains three filter blocks, each composed of one duplex filter (main antenna) and RX filter (diversity antenna), providing six antenna connectors for the BTS antenna line. The transceivers can be configured independently to dual or single carrier modes. The Dual RF Module has four dual carrier receivers that facilitate two dual carrier receivers with 2-way uplink diversity and it can therefore support multiple configurations. The Single RF Module is a half capacity version of the Dual RF Module. It has one per TX/RX output that supports a maximum of two TXascarriers carriers TX chain). There is one RX output connector well. (two The RF Module uses nominal 48 V DC for internal power supply. The FRGD can also use nominal 100/240 V AC (optional unit) , which increase s the power consumption by approximately 10 %.

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The main and diversity branches include Bias-Ts with lightning strike protectors (Single and Dual RF Module). The main branch (Tx/Rx) Bias-T is used for Flexi Antenna Line and MHA support. It supports Current Window Alarm (CWA) mode, and 3GPP and AISG 2.0 interfaces (the FRGJ and FRGK also support the proprietary AISG 1.1 interface for NBxx replacements). The diversity (Div Rx) branch Bias-T is only used for MHA support in Current Window Alarm (CWA) mode. The main branch also includes an Antenna Line VSWR Monitor (power meter for forward and reflected voltage ratio measuring). The operating voltages fed via main antenna line are 0 V DC/+12 V DC/+28.5 V DC and via diversity antenna line 0 V DC/+12 V DC. The VSWR monitoring system is used for producing alarms for the antenna line condition against alarm threshold (RRH, Single, Dual and Triple RF Module). As a default setting, the minor alarm will be generated when the VSWR is 1.9 and major alarm (cell down) will be generated when the VSWR is 2.6. However, it is possible to adjust both minor and major alarm threshold between 1.5-3.5. The antenna line does not provide any alarms without a valid licence (Line Supervision RAN907LK). AISG1.1 RET Antenna Line Device configuration is supported with the FRGG, FRGF, FRGJ, and FRGK. Remote Radio Head operation See the following figure for an isometric view of the Remote Radio Head (FRGG).

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DN70544485

Figure 3.

Isometric view of the R emote Radio Head (solar shield included)

The Remote Radio Head hosts the RF functionality and provides control and power supply to Flexi Antenna Line. The Remote Radio Head has the following properties:

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.

DC power supply for 48 VDC

.

Integrated Over Voltage Protection (OVP)

.

External alarms


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The functionality of the RRH is similar to the functionality of the Single RF Module with the exception that the RRH does not have any fans. The RRH supports the VSWR monitoring system and is AISG2.0 compatible. The RRH has one TX output that supports a maximum of two TX carriers (two carriers per TX chain). See the numbers of RF connectors and carriers in the following table.

Table 3.

Remote Radio Head RF connectors and number of carriers FRGG

# TX/RX connectors

1

# RX connectors

1

# carriers

2 (3 HW prepared)

Functional blocks The RF Module and RRH include the following functional blocks: .

RF control block: There are interfaces from the RF control block towardsconnections the System Module through optical connection. unit internal are made from the RF control block.Most Signal processing and unit control functionalities are located in this block.

.

.

.

.

TX block: Analogue RF parts are located in the TX block. PA block: The power amplifier block amplifies TX block output signal to a specified output power level. RX block: In dual version, the RX block includes four 2-carrier receivers and in Single RF Module two 2-carrier receivers. Antenna filter block: Antenna filtering for TX and RX signals is done in the Antenna filter block.

In the Single version, there is only one TX block, PA block and Antenna filter block. In the RX block, only half of the blocks components are installed. RF Module versions FRGJ and FRGK support 2100 MHz band with high gain MHA. The FRGJ and FRGK can be used with NBxx replacements having 24 dB TMA installation, thus existing TMAs can be utilised. The FRGJ and FRGK support 2100 MHz band with high gain MHA from 0 dB to 33 dB.

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See the following figures for the functional blocks of the RF Module.

RF Module

Duplex filter + Diversity RX

TX RF

PA

TX filter

Bias-T

VSWR

LNA

RX Main

filter LNA

RX Diversity

RX

LNA

Optical IF

RX Diversity

RX Main TX RF

Bias-T VSWR Det

TX filter LNA

RX Diversity

Bias-T

RX filter

LNA

RX Main

DC IN

RX filter

PA

TX RF

Bias-T

RX filter

LNA

RF RF control control

Bias-T

filter

RF loop Optical IF

Det

RX

RX filter

PA

TX

Bias-T VSWR Det

filter

PSU

DN70541558

Figure 4.

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Functional blocks of the Triple RF Module


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RF Module


TX filter

PA

TX RF

LNA

RX Main LNA

RX Diversity Optical IF

RF control

RF loop

LNA

RX Diversity LNA

RX Main

PA

TX RF DC IN

RX filter

Bias-T

VSWR Det

Bias-T

RX filter Bias-T

RX filter RX filter TX filter

Bias-T

VSWR Det

PSU

DN7092818

Figure 5.

Functional blocks of the Dual RF Module (FRIA, FRGJ, FRCA, FRDA, FRFA)

Tip The FRGC/L have fixed LNA gain.

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RF Module


TX filter

PA

TX RF RX Main

LNA LNA

RX Diversity Optical IF

RF control

RX filter

Bias-T

VSWR Det

Bias-T

RX filter

RF loop

DC IN

PSU

DN7095999

Figure 6.

Functional blocks of the Single RF Module (FRIB, FRGK, FRCB, FRDB, FRFB)

Tip The FRGD/M have fixed LNA gain.

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Control

RRHFILT

RRHS board

Power offset

TX LO TX-path I te n rf a c e # 0

s p u e r v is io n

O B S A J

T -X P o w e r

C lip p i n g

B a s e b a n d

U p -C o n v e rs i o n

R R C / D ig it a l

P r d e is to r ito n

D ig ia t l

rT a n s m it F ilt e r

L P A

D/A RF-Upconversation

T ri p le x e r

PDRX

M U X / D E M U X

In t e rf a c e # 1

O B S A J

C A o u n to tr m o l a / ti R c T G Wa P in

C A o u n to tr m o l a / tic R T G Wa i P n

d e t e c ti o n

R X p a th f a ilu re

D o w n -C o n v e rs a ti o n

d e te c tio n

R X p a th f a liu re

D o w n -C o n v e rs a ti o n

RF-Upconversation

D ig it a l

Main RX-path

A/D RX Att

A P L

R e c e iv e F lti e r

VSWR

) X 0 R T N & A X (T

RET/TMA support

AM/CO/MUCO

Div. RX-path

RF-Upconversation

D ig it a l

A/D RX Att

A P L

R

e c e iv e F i tle r

1 T N A

) V I D X R (

AM/CO/MUCO

RX LO

DN 70548957

Figure 7.

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Functional blocks of the Remote Radio Head (FRGG)


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RF Module and Remote Radio Head power requirements

2

RF Module and Remote Radio Head power requirements Input voltages and power consumption of the RF Module The input voltages and power consumption of the RF Module are described in the tables below. The fuse needed for the RF Module is in the System Module. See Flexi WCDMA BTS System Module Description for more information.

Table 4. Property

Input voltages of the RF Module and Remote Radio Head RFModule

R RH

Nominalsupplyvoltage

48V DC

48VDC

Input voltage range

40.5 - 57 V DC

36 - 57 V DC

1)

1)

The minimum start-up voltage is 40.5 V.

There is an optional external AC/DC converter available for the Single RF Module.

Table 5.

Power consumption of the RF Module

Typical average Triple RF Module RF Module power consumption at

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Dual RF Module Single RF Module

100 % RF load in 8 W mode

330W

259W

150W


275W

208W

123W


355W

263W

152W


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Table 5.

Power consumption of the RF Module (cont.)

Typical average Triple RF Module RF Module power consumption at

Dual RF Module Single RF Module


435W

327W

183W


350 W

N/A

N/A


485 W

N/A

N/A


620 W

N/A

N/A


365W

264W

151W


540W

364W

200W


700W

471W

255W

10 % RF load in

385 W

N/A

N/A


620 W

N/A

N/A


840 W

N/A

N/A

Maximum power consumption (single/dual in 40W mode and triple in 60W mode) including extreme temperatures and power feeding to MHAs and tilting antennas via integraded BiasTs.

1120W

60 W mode

630W

350W

Maximum power consumption values consist of power feed to MHA + antenna tilt (1x30 W with the Single RF Module, 2x30 W with the Dual and 3x30 W with the Triple RF Module). Up to 50 W/100 W/150 W (Single/ Dual/Triple) higher power consumption can exist in extreme conditions and in BTS output power overdrive situations. In possible short-circuit cases (for instance, antenna line) power consumption can momentarily be higher.

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RF Module and Remote Radio Head power requirements

Note The values are given for the 2.1 GHz radio frequency (RF) module. For other RF module variants, power consumption can increase by a maximum of 10 %.

In case the Single RF Module uses an optional AC power supply (FPAB), the power consumption is 10% higher compared to the values in the table above. Power consumption of the Remote Radio Head The table below lists the power consumption of the Remote Radio Head. The values in the above table do not include the power consumption of the heater which is 80W in cold temperatures below 0°C (32°F). In case the Remote Radio Head uses an optional AC power supply, the power consumption is 10% higher compared to the values in the table above.

Table 6.

Power consumption of the Remote Radio Head (FRGG)

RFload

60Wmode

100%

265 W

50%

205 W

10%

120 W

Worstcase

310W

Note that these values are applicable under normal operating conditions, in 1 carrier mode and in middle frequency.

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RF Module and Remote Radio Head dimensions and weights

3

RF Module and Remote Radio Head dimensions and weights The tables below list the dimensions and weights of the RF Module and the Remote Radio Head.

Table 7.

Dimensions and weight of the RF Module

Property

Triple RF Module

Height

133 mm/3U

Dual RF Module 133 mm/3U

133 mm/3U

(5.2 in.)

(5.2 in.)

447 mm

447 mm

(17.6 in.)

(17.6 in.)

560 mm

560 mm

(22 in.)

(22 in.)

(22 in.)

With aluminiu m casing: 25 kg

With steel casing: 23.2 kg

With steel casing: 20.1 kg

(51.1 lb)

(44.3 lb)

With aluminium casing: 21.8 kg

With aluminium casing: 18.7 kg

(48.1 lb)

(41.2 lb)

(5.2 in.) Width

447mm (17.6 in.)

Depth

Weight (including the core, fans and casing)

Single RF Module

560mm

(55.1 lb)

Warning The module is heavy. Take care when lifting the module.

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Table 8.

Dimensions and weight of the Remote Radio Head (FRGG)

Property

Value

Height

450 mm

Width

260 mm

Depth

159 mm

Weight

15.9kg

(17.7 in.)

(10.2 in.)

(6.3 in.)

(35.1 lb)

Note that the dimensions stated in the above table are main body dimensions.

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RF Module interfaces

4

RF Module interfaces Front panel connectors The connectors on the front panel of the RF Module, their types and purposes are listed in the table below.

Table 9.

RF Module front panel connectors, connector types and purposes

Connector

Connector type

Power supply

2-pin multibeam XL connector

Grounding

Screw terminal

Purpose Power delivery

Grounding

Operational state visual indication

2 x tri-colour LED

Operational state and fan status indication

Antenna connector 1

7/16 type, female

RF signal interface to antenna(s)

Antenna connector 2

7/16 type, female


Antenna connector 3 (Dual and Triple RF Module only)

7/16 type, female


Antenna connector 4 (Dual and Triple RF Module only)

7/16 type, female


Antenna connector 5 (Triple RF Module only)

7/16 type, female


Antenna connector 6 (Triple RF Module only)

7/16 type, female


Optical interface

Duplex LC connector

Optical interface (Triple RF Module only)

Duplex LC connector

Control interface to the System Module Chaining interface

See also section Lightning surge requirements in the Flexi WCDMA BTS Installation Site Requirements document.

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The RF Module (Triple) front panel is illustrated in the following figure. Power supply

Ant 6

Grounding point

Ant 5

Ant 4

Ant 3

LEDs (behind the handle)

Ant 2

Ant 1

Optical interface 1

Optical interface 2

DN70549383

Figure 8.

Front panel of the Triple RF Module

The RF Module (Dual) front panel is illustrated in the following figure. Ant 4

Ant 3

Ant 2

Optical interface

Grounding point

LEDs

Ant 1

Grounding point

Power supply DN7082485

Figure 9.

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Front panel of the Dual RF Module


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Remote Radio Head interfaces

5

Remote Radio Head interfaces See the following table for Remote Radio Head interfaces.

Table 10.

Remote Radio Head (FRGG) interfaces

Connector

Connector type

Power supply

ITT Cannon 2 pin + RRH DC connection box

Grounding

M8,2xM5

Purpose Power delivery Grounding

Operational state visual indication

2 x LED

Operational state indication (Status: 3-colour LED, RF on: 2-colour LED)

Antenna connector 1

7/16 type, female


Antenna connector 2

7/16 type, female


Optical interface

Multi-mode (200 m) or single mode fibre (up to 15 km) OBSAI optical interface

Control interface to the System Module

EAC connector

Amphenol C 091 D series (14 pin)

External alarm

RET

Amphenol C 091 D series (8 pin)

Remote electrical tilt

LMT

RJ-45(LAN)

Localmaintenance

The minimum length for the FRGG DC power supply cable is 2 m. The Remote Radio Head (FRGG) bottom view is illustrated in the following figure.

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DC 48V

External alarms RET

Antenna port TX/RX

Status indication

LMT

Ground 2 x M5

Ground M8

RF on indication

Reset Test

Opt interfaces

Antenna port RX div

DN70543856

Figure 10.

Bottom view of the R emote Radio Head (FRGG)

DC power can also be fed to the FRGG using an optional Flexi RRH DC connection box (FPOC).

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Remote Radio Head interfaces

Figure 11.

Flexi RRH DC connection box

See the following table for allowed cable dimensions.

Table 11.

FPOC cable dimensions

Diameter for copper at clamp Outer diameter of complete cable

1.5 mm 15 mm

2 2

to 16 mm 2 to 25 mm 2

See also section Lightning surge requirements in the Flexi WCDMA BTS Installation Site Requirements document.

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RF Module and Remote Radio Head LED indications

6

RF Module and Remote Radio Head LED indications The RF Module and Remote Radio Head have two LEDs on the front panel to indicate the operational status of the module and all fault conditions during operation. Read the information on LED indications thoroughly. A blinking red LED does not always require removing the module. RF Module LED indications The RF Module LEDs are as follows: one for the RF core functional block

.

one for the fans in the RF Module

.

The LED indications of the RF Module are listed and explained in the tables below.

Table 12.

RF Module core LED indications

Colour

Explanation

Red

Module self test or reset (LED red for < 5 second) or major alarm

Red,blinking

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Minoralarm

Yellow

Module on and waiting or blocked

Yellow, blinking

SW download or configuration ongoing, module non-operational

Green

Module operational (cell can be locked in RNC)

Green, blinking

Module is loading software or parameters or local maintenance access when modules are operational


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In addition, the RF Module fan LED has an RF power ON/OFF display:

Table 13.

RF Module fan LED indications

LEDmode

Explanation

Blinking

RFpoweroff

Lit continuously

RF power on

Green

Fanisoperational

Red

Fanisfaulty

Remote Radio Head LED indications The Remote Radio Head (FRGG) LEDs are as follows: .

one for indicating RF "on"

.

one for indicating RRH status

The LED indications of the Remote Radio Head are listed and explained in the tables below.

Table 14.

Remote Radio Head (FRGG) LED indications

LEDmode

Explanation

Blinking

RFpoweroff

Litcontinuously

RFpoweron

Table 15.

Remote Radio Head (FRGG) LED indications

LEDmode Red Red,blinking

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Explanation Module self test or reset (LED red for < 5 second) or major alarm Minoralarm

Yellow

Module on and waiting or blocked

Yellow, blinking

SW download or configuration ongoing, module non-operational

Green

Module operational, OBSAI interface is synchronised


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RF Module and Remote Radio Head LED indications

Table 15.

Remote Radio Head (FRGG) LED indications (cont.)

LEDmode Green, blinking

Explanation Module is loading software or parameters

The RRHs do not have fans, therefore, there are no fan LEDs.

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Flexi WCDMA BTS RF Module and RRH Description

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