BB6631 Descrip

 

Baseband Description Baseband 6631, Baseband 6621 Description

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Copyright

© Ericsson AB 2021, 2022. All rights reserved. No part of this document may be reproduced in any form without the written permission of the copyright owner. Disclaimer

The contents of this document are subject to revision without notice due to continued progress in methodology, design and manufacturing. Ericsson shall have no liability for any error or damage of any kind resulting from the use of this document. Trademark Tr ademark List

All trademarks mentioned herein are the property of their respective owners. These are shown in the document Trademark Information Informat ion..

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Contents

Contents

1

Product Overview

1

1.1

Main Features

1

1.2

Purpose

1

1.3

Variants

1

1.4

Overview

2

1.5

Warranty Seal

3

2

Function Description

4

3

Technical Data

5

3.1

Environmental Characteristics

5

3.2

Power Supply Characteristics

7

4

Hardware rchitecture

9

5

Baseband Interfaces

10

5.1

External Alarms

12

6

Standards and Regulations

13

6.1

Regulatory Approval

13

6.2

Environmental Specications - Operational Conditions

15

7

Preventive Maintenance

16

8

Spare Parts

17

9

Transportation and Storage

18

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Baseband Description

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Product Overview

1

Product Overview This document describes the 19-inch RAN Compute units for Ericsson Radio Systems.

1.1

Main Features This section describes the main features of the baseband. Not all features are supported by all equipment congurations. For a description of the current equipment congurations, see Radio Node Congurations. The main features of the baseband are the following: — NR — LTE (FDD and TDD), WCDMA, GSM — Ericsson Spectrum Sharing — Massive-IoT — Elastic RAN — Advanced RAN Coordination — Mixed Mode — Backhaul cascading

1.2

Purpose Baseband 6621 and Baseband 6631 provide switching, swi tching, trafc management, timing, baseband processing, and radio interfacing. The baseband units in the 19-inch format, with 15 Common Public Radio Interface (CPRI) ports, enable increased connectivity for radio units.

1.3

Variants The 19-inch baseband units are available in the following variants: — Baseband 6621 — Baseband 6631

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1

   

Baseband Description

For information about supported congurations and capacity, refer to Radio Node Congurations

1.4

Overview This section provides an overview of the 19-inch baseband units.

- 48 48 V

M AX AX 7 A

 A   B

TN/IDL

 A

B

C

D

 

A

B

C

D

E

F

G

H

J

 

K

L

M

N

P

Q

SYNC TN E  ALARM 1 2

USB LMT

B   a  s   e  b   a n  d   6   6  2  1 

Ge23976A

Figure 1 Baseband Overview Note:

Baseband 6621 and Baseband 6631 share the t he same overview.

Baseband 6621 and Baseband 6631 are self-maintained 19-inch units with an easily removable fan tray unit. Each unit can be installed in any 19-inch rack or cabinet or in an RBS. The units support both horizontal and vertical installation. Baseband 6621 and Baseband 6631 facilitate a scalable, modular system with one or more indoor 19-inch baseband units and a number of external radios. Figure 2 sho 2 shows ws the 19-inch 19-inch Baseband installed in a rack and connected to external radios. For information about 19-inch baseband unit placement in an RBS, refer to RBS Description.. Description

2

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Product Overview

 AIR / RRU  AIR

 Antenna

Optical cable

Optical cable

Radio

Power  cable Power  Baseband 6631/6621 RD

IRU Ge12529B

Figure 2 19-Inch Baseband Connected to External Radios

1.5

Warranty Seal The product is equipped with wit h a warranty seal sticker. Note:

Seals that have been implemented by Ericsson must not be broken or removed, as it otherwise voids warranty.

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3

 

Baseband Description

2

Function Description The Baseband has the following functions: — Timing function — Loadable software — Downlink (DL) baseband processing — Uplink (UL) baseband processing — IP trafc management — Radio interface — Backhaul handling — External synchronization

Baseband Processing

 Transmission

Baseband

Radio interface

   Timing

Ge0376B

Figure 3 Baseband Block Diagram For more information about the external synchronization, see the following documents: — GNSS Receiver System Description — GNSS Receiver System User Guide — Manage Network Synchronization — Manage Node Group Synchronization — Manage LTE LTE RAN Synchronization

4

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Technical Data

3

Technical Data Table 1

Dimensions and Weight

Baseband

Height

Baseband 6621 Baseband 6631

44 mm (1 U)

Width

Depth

483 mm (19inch)

Weight

292 mm

≈ 5 kg

383 mm

≈ 7 kg

For more information about capacity data, refer to Radio Node Congurations and Supported Capacity and Congurations.

3.1

Environmental Characteristics Table 2

Environmental Data

Description

Value

Temperature

0 to +55°C(1)

Relative humidity

5– 85%

Absolute humidity

1–25 g/m3

Maximum temperature ch change

0.5°C/min

(1) The long term average temperature is recommended recomme nded to be around 30 °C or lower. Continuous Continuous operation close to upper temperature limit will negatively impact the product long term reliability.

Note:

The operating environment of the unit must be a temperature-controlled enclosed location suitable for sensitive data and telecommunication equipment, with very low levels of airborne particles. For example Network Telecommunication Facilities or inside an Outside Plant (OSP) cabinet.

Note:

The unit cannot be installed in cabinets that do not meet the environmental requirements for operation, for example cabinets using outside air cooling or not having adequate control of particles, airborne corrosive gases, and salt mist. For detailed environmental requirements, see Environmental Conditions on page 15. Specications - Operational Conditions on

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5

 

Baseband Description

3.1.1

coustic Noise The unit emits acoustic noise according to the tables below. The acoustic noise is ambient temperature dependent. Table 3

Temperature (°C)

Baseband Sound Power Level (dB)

+20