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Description
313/1551-LZA 701 6001/1 Uen V
RAN Compute Description
RAN Processor 6647, RAN Processor 6651
Contents
P ro d u c t O ve r v i e w
Main Features
Purpose
Variants
Overview
Warranty Seal
Fu n c t i o n D e s c r i p t i o n
Technical Data
Dimensions
Environmental Characteristics
Power Characteristics
H a rd wa re A rc h i te c t u re
R AN C o m p u te I nte r fa c e s
External Alarms
Sta n d a rd s a n d Re g u l a t i o n s
Regulatory Approval
Environmental Specifications - Operational Conditions
P re ve nt i ve M a i nte n a n c e
Sp are P a r ts
Transpor tation and Storage
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1 Product Overview
This document describes the 19-inch RAN Compute units for Ericsson Radio Systems.
1.1 Main Features
Not all features are supported by all equipment configurations. For a description of the current equipment
configurations, see Radio Node Configurations.
The main features of the baseband are the following:
– NR (FDD and TDD)
– LTE (FDD and TDD)
– Ericsson Spectrum Sharing
– Mixed Mode
– Massive-IoT
– 5G Plug ins
– Elastic RAN
– Advanced RAN Coordination
– Backhaul cascading
1.2 Purpose
RAN Processor 6647 and RAN Processor 6651 provide switching, traffic management, timing, baseband processing,
and radio interfacing. The RAN Compute units are in the 19-inch format. RAN Processor 6647 has 9 and RAN Processor
6651 has 12 Common Public Radio Interface (CPRI or eCPRI) ports respectively, enabling increased connectivity for
radio units.
1.3 Variants
– RAN Processor 6647 and RAN Processor 6651:
• Complies with the operating environment figures shown in Environmental Characteristics.
– RAN Processor 6651:
• Version R-state R3C requires the following (or higher) SW releases: 21.Q4.2, 22.Q1.1 and 22.Q2.1.
For information on supported configurations and capacity, see Radio Node Configurations
1.4 Overview
This section provides an overview of the 19-inch RAN Compute units.
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-48V
A
MAX 8A
B
TN/IDL
A
B
C
A
D
B
C
D
E
F
G
H
J
SYNC TN E ALARM
1
2
USB LMT
Ge24967A
Figure 1 Overview RAN processor 6647
-48V
A
MAX 11A
B
TN/IDL
A
B
C
D
A
B
C
D
E
F
G
H
J
K
L
M
SYNC TN E ALARM
1
2
USB LMT
Ge24956B
Figure 2 Overview RAN processor 6651
The RAN Compute units are self-contained 19-inch units with an easily removable fan tray unit. Each unit can be
installed standalone in any 19-inch rack. enclosure or in an RBS. The units support both horizontal and vertical
installation.
The RAN Compute units facilitate a scalable, modular system with one or more indoor 19-inch baseband units and a
number of external radios.
For information about 19-inch baseband unit placement in an enclosure or an RBS, refer to Enclosure Description or
RBS Description.
AIR / RRU
AIR
Antenna
Optical
cable
Optical
cable
Radio
Power
cable
Power
RD
RAN Processor
IRU
Ge24958A
Figure 3 Overview of 19-Inch RAN Compute Unit Connected to External Radios
1.5 Warranty Seal
The product is equipped with 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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2 Function Description
The unit has the following functions:
– Timing function
– Loadable software
– Downlink (DL) baseband processing
– Uplink (UL) baseband processing
– IP traffic management
– Radio interface
– Backhaul handling
– External synchronization
Figure 4 Unit 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 RAN Synchronization
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3 Technical Data
3.1 Dimensions
Table 1 Dimensions and Weight
Depth
Baseband
H eig ht
RAN processor 6651
Width
44 mm (1 U)
RAN processor 6647
483 mm (19-inch)
With
P ro t r u s i o n
Without
P ro t r u s i o n
383 mm
352 mm
We i g h t
≈ 7.7 kg
≈ 7.0 kg
3.2 Environmental Characteristics
Table 2 Environmental Data
Description
Va l u e
Temperature(1)
0 to +55°C
Relative humidity
5–95%
Absolute humidity
1–29 g/m3
Maximum temperature change 0.5°C/min
(1) The long term average temperature is recommended to be around 30 °C or lower. 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 Specifications - Operational Conditions.
3.2.1 Acoustic Noise
The unit emits acoustic noise according to the tables below.
The acoustic noise is ambient temperature dependent.
Table 3 RAN Processor 6647 Sound Power Level
Temperature (°C)
S o u n d P owe r Leve l ( d B )
+20
<53
+25
<53
+30
<53
+40
<53
+45
<60
+55
<76
Table 4 RAN Processor 6651 Sound Power Level
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Temperature (°C)
S o u n d P owe r Leve l ( d B )
+20
<49
+25
<49
+30
<49
+40
<58
+45
<66
+55
<72
3.2.2 Vibration
This section describes the unit tolerance to vibrations.
The unit operates reliably during seismic activity as specified by Telcordia GR-63-CORE, EQ4 and the test method IEC
60 068-2-57 Ff.
The unit operates reliably during random and shock vibration as specified by ETSI EN 300 019-2-3.
The unit operates reliably during random vibration as specified by test method IEC 60 068-2-64 Fh.
Random vibration, normal operation 0.04 m2/s3
The unit operates reliably during shock as specified by test method IEC 60 068-2-27 Ea.
Peak acceleration
50 m/s2
Duration
11 ms
3.3 Power Characteristics
The power supply voltage for the RAN Compute unit is −48 V DC.
Table 5 DC Power Supply Requirements
Condition
Va l u e
Nominal voltage
−48 V DC
Operating voltage range
−38.0 to −58.5 V DC(1)
Non-destructive range
0 to −60 V DC
(1) During cold startup the supply voltage must be between -46 V DC and -58.5 V DC
Fu s e a n d C i rc u i t B r e a ke r R e c o m m e n d a t i o n s
The external fuse and circuit breaker recommendation for the RAN Compute unit is shown in Table 6.
The recommendations in this section are based on peak power consumption and give no information on power
consumption during normal operation.
The recommended melting fuse type is gG-gL-gD in accordance with IEC 60269-1. Circuit breakers must comply with
at least Curve 3 tripping characteristics in accordance with IEC 60934.
Note: The maximum fuse rating shown below is for general use. Always consider local regulations and situations that
can lower the maximum fuse rating. The maximum fuse rating for a 14 AWG cable is, for example, 15 A in the
US according to NEC.
The Baseband unit itself is rated for 25 A. When installed in Ericsson Enclosures, the fuse ratings have been
dimensioned for the Enclosure environment, and can be different from what is stated in the table.
For detailed information regarding fuse limits for different installation scenarios, see power cables related
specifications in Baseband Connections.
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Table 6 Fuse and Circuit Breaker Recommendations
D C P owe r
M i n i m u m Fu s e Ra t i n g f o r Re l i a b l e
O p e rat ion (2)
M ax i m u m Fu s e Ra t i n g ( 3 )
RAN Processor 6651
15 A
25 A
RAN Processor 6647
10 A
25 A
(2) The recommended fuse rating corresponds to peak load and depends on the configuration.
(3) This value specifies the maximum fuse rating the unit can withstand. For product safety, the maximum fuse rating must never be exceeded. To
avoid hazardous damage, general fuse dimensioning must consider all external factors, such as local regulations and cable dimensioning.
3.3.1 Power Consumption
For information on power consumption, see Power Consumption Data and Power Consumption Calculations.
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4 Hardware Architecture
This section contains an overview of the standard hardware units.
Figure 5 Hardware Architecture
Table 7 19-Inch RAN Compute Hardware Units
Position
Na me of Un its
Nu mb er of Un it s
A
19-inch RAN Compute unit 1
B
Fan module
1
C
Movable Brackets
2
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5 RAN Compute Interfaces
Table 8 Interfaces
Marking
C o n n e c to r
A
B
TN/IDL A(5)(6)
TN/IDL B(6)
TN/IDL C(6)
TN/IDL D (6)
Optical
I n d i c a to r ( 1 )
Channels
F EC
Dual lug with two M6 screws Grounding
No
-
-
ET20 A(2)(3)(4)
−48 V DC
Power
Yes
-
-
QSFP28
4×10 Gbps/4×25 Gbps Ethernet
transmission
External interface; electrical or
optical
Yes
4
RS(7)(8)
BASE-R(8)(9)
SFP28
1 Gbps/10 Gbps/25Gbps
Ethernet transmission
External interface; electrical or
optical
Yes
1
RS(7)(8)
BASE-R(9)(8)
RAN Processor 6651: Radio
interface × 12(10)
RAN Processor 6647: Radio
interface × 9(10)
Interface between baseband and
external radios, electrical(11)or
optical
All the ports support CPRI and
eCPRI
Yes
Line rates:
-
RS(7)(8)
RAN Processor 6651:
SFP28
A–M
RAN Processor 6647: A–J
Description
–
CPRI: 2.5 Gbps, 4.9 Gbps,
9.8 Gbps, 10.1 Gbps, and
24.3 Gbps
–
eCPRI: 10.3 Gbps and
25.8 Gbps (12)
RJ-45
100 Mbps/1 Gbps Ethernet
transmission(13)
External interface; electrical
Yes
-
-
SYNC
RJ-45
Synchronization interface for
connection of a GNSS receiver
unit, for example, GRU 04 01
External interface
Yes
-
-
ALARM 1
ALARM 2
RJ-45
External alarm interface × 2 . The
unit supports eight external
No
alarms, four per port.
-
-
USB
USB3.1 Type-C
for downloading UP from a
memory stick(14)
No
-
-
Yes(20)
-
-
TN E
LMT
RJ-45
LMT A interface(15)(16)
LMT B Interface(16)(17)
Synchronization test
interface(18)(19)
Internal and external interfaces
-
Fault
Optical indicator, red
Yes
-
-
-
Operation
Optical indicator, green
Yes
-
-
-
Maintenance
Optical indicator, blue
For information about the
maintenance button, see
Indicators, Buttons, and
Switches.
Yes
-
-
-
Status
Optical indicator, yellow
Yes
-
-
-
Fan unit fault
Optical indicator, yellow
Yes
-
-
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(1) For more information about optical indicators, see Indicators, Buttons, and Switches
(2) The 19-inch RAN Compute units have a built-in 10 ms hold-up function.
(3) The unit supports power redundancy. Connect power sources to both power ports. If the power to one port goes down, a failover will occur
automatically to the other power source.
(4) The unit supports 3-wire (DC-I) power feed. It can also support 2-wire (DC-C) power feed by making a jumper connection in the power cable.
Refer to Install 19-Inch Baseband for more information about the power cable pin out, and Power Cables 2- and 3-Wire.
(5) Auto-negotiation not supported for 25G electrical interface (25GBASE-CR)
(6) Supports synchronization over the transport network
(7) IEEE802.3 clause 108
(8) Only supported in 25G link speed
(9) IEEE802.3 clause 74
(10) Baseband has two RI-port groups. For more information on the connections see Radio Node Configurations.
(11) Support connection up to 10.1 Gbps
(12) Depending on the Software Package
(13) PTP support on TN E is only valid at 1 Gbps
(14) Only available when unit is in network loader state
(15) RS-232 interface. Accessed with the LMT splitter cable.
(16) For more information about the LMT interfaces, see Connect Client.
(17) 100 Mbps electrical Ethernet interface.
(18) Compliant with 1PPS 50 Ω phase synchronization measurement interface. Accessed with an adapter.
(19) For more information about the sync test interface, see Manage Network Synchronization.
(20) The optical indicator indicates the status of the LMT B interface.
Remove the protective plugs only where cables are to be connected. Make sure that all connectors that are not
connected have protective plugs.
Figure 6 Protective Plugs
5.1 External Alarms
The external alarms function can be used to monitor alarms from sensors on external equipment, for example doors,
lights, and others.
Each alarm can be configured to be triggered by the following two alarm conditions:
– Closed loop condition
An alarm is triggered when an open switch is closed.
– Open loop condition
An alarm is triggered when a closed switch is opened (default alarm condition).
Table 9 External Alarms and Output Characteristics for RAN Processor 6647 and RAN Processor 6651
Ala rm I n p u t P or t De tails
C h a ra c te r i s t i c s
Number of alarm input
8
Maximum sensed impedance for a closed loop condition Closed (less than 5 kΩ)
Minimum sensed impedance for an open loop condition Open (greater than 60 kΩ)
Maximum current sourced from port interface
10 mA
Maximum voltage sourced from port interface
18 V
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6 Standards and Regulations
This section presents a brief overview of standards, regulatory product approval, and declaration of conformity.
Decl arat io n of C onfo rm it y
"Hereby, Ericsson AB, declares that this product is in compliance with the essential requirements and other relevant
provisions of Radio Equipment Directive 2014/53/EU and RoHS Directive 2011/65/EU and Radio Equipment
Regulations 2017 and RoHS Regulations 2012."
6.1 Regulatory Approval
The product complies with the following market requirements:
– EU market requirements, Radio Equipment Directive 2014/53/EU.
– UK market requirements, Radio Equipment Regulations 2017 and Radio Equipment Directive 2014/53/EU.
6.1.1 Environmental Standards Compliance
The product complies with the following environmental standard:
EU
– RoHS Directive 2011/65/EU
UK
– RoHS Regulations 2012 and RoHS Directive 2011/65/EU
6.1.2 Safety Standards Compliance
In accordance with market requirements, the product complies with the following product safety standards and
directives:
I n te r n a t i o n a l
– IEC 60 529 (IP20)
– IEC 62368-1
EU and UK
– EN 60 529 (IP20)
– EN 62368-1
USA
– UL 62368-1
Canada
– CAN/CSA-C22.2 No. 62368-1
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6.1.3 EMC Standards Compliance
The product complies with the following Electromagnetic Compatibility (EMC) standards:
I n te r n a t i o n a l
– 3GPP TS37.113
EU and UK
– ETSI EN 301 489-1
– ETSI EN 301 489-50
USA
– FCC CFR 47 Part 15 B
Canada
– ICES-003
6.1.4 Radio Standards Compliance
The product complies with the following radio standards:
I n te r n a t i o n a l
– 3GPP TS37.141
EU and UK
– ETSI EN 301 908-1
– ETSI EN 301 908-18
6.1.5 Marking
To show compliance with legal requirements the product is marked with the following labels:
EU
– CE mark
– WEEE symbol
UK
– UKCA mark (for Great Britain)
– CE mark (for Northern Ireland)
– WEEE symbol
USA
– cETLus
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– FCC CFR 47 Part 15 Compliance Statement:
“This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
• This device may not cause harmful interference.
• This device must accept any interference received, including interference that may cause undesired
operation.”
Canada
– ISED IC-003 Compliance statement: “CAN ICES-3 (B)/NMB-3(B)”
– cETLus
6.2 Environmental Specifications - Operational Conditions
The operating environment must comply with the following standards:
– IEC 60721-3-3 classes 3K3/3Z2/3Z4/3B1/3C2(3C1)/3S2/3M2
– ETSI EN 300 019-1-3 Class 3.1
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7 Preventive Maintenance
The product is designed for a technical lifetime of 10 years (24-hour operation).
The following preventive maintenance conditions must be fulfilled to guarantee the availability:
– Air intake must be inspected (and cleaned if necessary) every year.
Note: The intervals between maintenance at each unit can vary depending on local environmental conditions.
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8 Spare Parts
The product adheres to the Ericsson Serviceability and Spare Part Strategy.
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9 Transportation and Storage
For information about transportation and storage of the product, see Transportation and Storage.
Legal | © Ericsson AB 2021-2023
Copyright
© Ericsson AB 2021-2023. 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.
Trademarks All trademarks mentioned herein are the property of their respective owners. These are shown in the
document Trademark Information.
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