dug description
DESCRIPTION
DUG 20 DescriptionTRANSCRIPT
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Digital Unit Description
DESCRIPTION
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Copyright
Ericsson AB 20092012. All rights reserved. No part of this document may bereproduced in any form without the written permission of the copyright owner.
Disclaimer
The contents of this document are subject to revision without notice due tocontinued progress in methodology, design and manufacturing. Ericsson shallhave no liability for any error or damage of any kind resulting from the useof this document.
Trademark List
All trademarks mentioned herein are the property of their respective owners.These are shown in the document Trademark Information.
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Contents
Contents
1 Product Overview 11.1 Purpose 11.2 Variants 11.3 Overview 11.4 Warranty Seal 2
2 Function Description 32.1 Maintenance Button 4
3 Technical Data 5
4 DU Interfaces 7
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Digital Unit Description
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Product Overview
1 Product Overview
This document describes the Digital Unit (DU) for RBS 6000 systems usedfor the GSM standard.
1.1 PurposeThe DU provides: switching, traffic management, timing, and radio interfacing.
1.2 VariantsThe DU variants are the following:
DUG 10 01
DUG 20 01
DUG 10 01 and DUG 20 01 support Evolved EDGE level A.
1.3 OverviewThis section provides an overview of the DU, as shown in Figure 1.
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Digital Unit Description
Ge0993A
FE
DC
BA
GP
SE
CLM
T A
LMT
BE
T A
ET
BE
SB
RI A
RI B
RI C
RI E
RI F
RI D
!
DUG 10 01
-48V
DC
GP
SE
CLM
T A
LMT
BE
T A
ET
BE
SB
!
DUG 20 01
-48V
DC
Figure 1 Overview DUG 10 01 and DUG 20 01
Information about DU placement can be found in RBS Description.
1.4 Warranty SealThe unit is equipped with a warranty seal sticker.
Note: Seals that has been implemented by Ericsson shall not be broken orremoved, as it otherwise will void warranty.
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Function Description
2 Function Description
More information can be found in RBS Configurations.
The DU has the following functions:
Timing function
Loadable software (from Flash Card) Radio interface
Transmission handling
External synchronization
Tower Mounted Amplifier Control Module (TMA-CM) (only for DUG 10 01)For the block diagrams of the DUs, see Figure 2 (DUG 10 01) and Figure3 (DUG 20 01).
Ge0911
DU
TMA-CM
Transmission
Timing
Radiointerface
Figure 2 DUG 10 01 Block Diagram
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Digital Unit Description
Ge0376A
DU
Processing
Transmission
Timing
RadiointerfaceBaseband
Figure 3 DUG 20 01 Block Diagram
2.1 Maintenance ButtonSee Indicators, Buttons, and Switchesfor information about the maintenancebutton.
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Technical Data
3 Technical Data
Technical data for the DU is listed in Table 1 .
Table 1 Technical DataTechnicalData
Powerdissipation,maximum
Dimensions Capacity data
Height Width Depth Weight Maximum carrier capacity,(measured in carrier elements)
DUG 10 01 20 W 350 mm 30 mm 285 mm
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Digital Unit Description
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DU Interfaces
4 DU Interfaces
The signalling and power interfaces for the DU are listed in Table 2.
The DUG 10 01 and DUG 20 01 have different radio interfaces. This is becausethe DUG 10 01 uses the architecture from RBS 2000, with the basebandcircuitry on the Radio Unit (RU) (the RUG 11). Instead of a separate unit forTMA-CM (as in RBS 2000), this functionality is included in the DUG 10 01, andcould also be used for antenna supervision. Only electrical connection betweenthe DU and RU is supported.
The DUG 20 01 uses the same architecture as the other radio standards in RBS6000 (WCDMA and LTE), with the baseband circuitry on the DU connectedover the standardized CPRI (2.5 Gbps) interface to a Radio Unit Multi-standard(RUS). The RU does in this case include the TMA-CM functionality and theCPRI interface supports both electrical and optical connection (the latter formain-remote configurations).Table 2 DU Interfaces
Marking Interface Description OpticalIndicator
Power(1)
-48 V DC(2)ET20 A -48 V DC
Power
No
GPS RJ-45 GPS interface includingGPS power
No
EC RJ-45 Enclosure control
EC-bus common
Optical indicator, green
Yes
LMT A RJ-45 Local ManagementTerminal (LMT) A
No
LMT B RJ-45 Site LAN and LMT B
Optical indicator, green
Yes
ET A RJ-45 E1/T1 port
Optical indicator, green
Yes
ET B RJ-45 E1/T1 port
Optical indicator, green
Yes
- Fault
Optical indicator, red
Yes
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Digital Unit Description
Marking Interface Description OpticalIndicator
- Operation
Optical indicator, green
Yes
Maintenance
Optical indicator, blue
Yes-
Maintenance button
For information about themaintenance button, seeSection 2.1 on page 4.
No
- Status
Optical indicator, yellow
Yes
ESB HSIO For synchronization withother GSM digital unitslike DUG or DXU.
No
RI A - RI F(1)
A - F(2)Y-link, 6 x HSIO(1)
CPRI, 6 x SFP(2)Radio Interface AFincluding Tower MountedAmplifier (TMA) powerfor DUG 10 01.
Optical indicator, green
Yes
(1) DUG 10 01(2) DUG 20 01
More information about optical indicators can be found in Indicators, Buttons,and Switches.
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toc1 Product Overview1.1 Purpose1.2 Variants1.3 Overview1.4 Warranty Seal
2 Function Description2.1 Maintenance Button
3 Technical Data4 DU Interfaces