SRAN Overview
NokiaEDU
SRAN Overview
SRAN radio planning and dimensioning topics [SRAN19]
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SRAN Overview
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SRAN Overview
Content
- SRAN19 Overview
- SingleOAM in SRAN19
- System Module Sharing
- Transport HW Overview
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SRAN Overview
SRAN Overview
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SRAN Overview
SRAN19 Network Architecture
NE3SNWI3
BTS
Mediator
NWI3
SOAM
BTSOM
A / Gb
Abis
BTSOM
GSM
UE
OMS
NetAct
NetAc
t
iOMS
RAN
RAN
OSS
NWI3
BSC
2G BTS
SBTS
IuB
Single
3G BTS
RAN
WCDMA
UE
Iu-CS /
Iu-PS
RNC
RN
C
S1-MME / S1-U
LTE UE
© Nokia 2018
LTE
BTS Single RAT
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Core Network
Network
SRAN Overview
SRAN Overview
Brief introduction
Key drivers for SRAN
• Simplified management OAM
• Simplified backhaul transport solution
• Simplified data model (e.g. one SMOD, RMOD)
• Energy saving
• Less BB HW needed
• Less cabling needed
• Faster deployment of new technology at BTS
• Future-proof solution
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SRAN Overview
SRAN Highlights
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New SBTS Software
Single OAM
One base station for GSM, WCDMA and LTE
radio technologies
Common handling in Netact, Simplified site
creation, commissioning and config.
Based on Flexi Multiradio 10
And AirScale System Module
Supporting single radio
all radio- and Transport SW upgrades
Common backhaul IP transport
System module sharing
One IP host and interface
Extremely compact sites
One IP address and IP security
Lower energy consumption
No external IP transport boxes
Scalable capacity
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SRAN Overview
SRAN19 Features Highlights
Site Solution Evolution
New AirScale Units
Transport
• Single Logical SBTS on AirScale +
FSMF
• MSR mode for AirScale RRH 2T4R B1
120W AHGA
• MSR mode for AirScale RFM 6T6R B5
480W ARCA
• MSR mode for AirScale RFM 6T6R B1
480W ARGA
• IPv6 based Packet Abis
RAT features parity
Operability and Serviceability
Spectral Efficiency / IoT
• FDD-LTE 19
• Web Element Manager enhancements
• WCDMA 19
• BTSMED Active-Active Resiliency
• Dynamic Spectrum Sharing
GSM+LTE
• LTE 19 IoT features for SRAN
• GSM 19
• Multiple BTSMEDs
• EC-GSM IoT support in SRAN
• AirScale Sub-rack sharing
between SBTS and 5G
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• IPv6 based Iub
• ToP with Phase Synch resiliency
SRAN Overview
System Module Sharing
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SRAN Overview
HW platform
FSMF system module as platform for SBTS
SBTS = FSMF system module + SRAN SW (serving GSM WCDMA LTE)
Flexi MultiRadio 10 – FSMF
• 2 x Transport interfaces
(one shared with RP3-01)
• Optional FTIF module
• Optional FBBA/C add-in cards
Flexi MultiRadio 10
FSMF system module
with Multi-RAT support
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• Simultaneously processing of 3RATs on one system
module
• Baseband capacity and extension modules allocated to
specific RATs
• Common Transport and O&M on Master module
• Optional TRS extension unit FTIF for TDM interface and
Ethernet interfaces extensions
• All FSMF HW rel. supported (excluding FSMF A.101)
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SRAN Overview
FSMF system module
Opt. PDU
WCDMA
(or GSM or LTE)
Opt. PDU
WCDMA
WCDMA
WCDMA
WCDMA
Opt. PDU
Opt.TRS ext
Single-RAT Mode
GSM/WCDMA
2nd Flexi MR 10(opt)
GSM&LTE
Flexi Multiradio 10
System Module
3 HU
Opt. PDU
LTE
Opt.TRS ext
LTE
Opt. PDU
Opt.TRS ext
GSM/LTE
2-RAT
Modes
2nd Flexi MR 10(opt)
WCDMA
FSMF
FBBA/C
LTE
FBBA/C
Standard Flexi Multiradio 10 System Module as basis
• Multi-RAT capable plug-in units: GSM, WCDMA, LTE
• System Module chaining with up to two Modules for higher capacity
configurations
• Can also be used in dedicated Modes with SRAN architecture
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2nd Flexi MR 10(opt)
GSM&WCDMA
Opt.TRS ext
WCDMA
in dedicated mode with
SRAN architecture
Opt.TRS ext
LTE
Opt. PDU
Opt.TRS ext
WCDMA/LTE
2nd Flexi MR 10(opt)
FSMF: GSM&WCDMA
WCDMA
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LTE
GSM/LTE/
WCDMA
3-RAT
Mode
SRAN Overview
AirScale System Module
AMIA (Subrack)
3U
ABIA (Capacity PIU)
Capacity PIU (Capacity extension)
Capacity PIU (Capacity extension)
Capacity PIU (Capacity extension)
Capacity PIU (Capacity extension)
Capacity PIU (Capacity extension)
Common PIU (transport and control)
Common PIU (transport and control)
1) PIU
ASIA (Common PIU)
Half subrack
Capacity PIU1) (Capacity extension)
Half subrack
– Plug In Unit
• Multi-RAT: GSM, WCDMA, TDD-LTE, FDD-LTE, LTE-A Pro & 5G
ready, Cloud enhanced
Subrack (AMIA)
• Single RAN: 2G, 3G, 4G simultanously in one module
Plug-in unit codes AXYZ:
• A: AirScale platform products
• X: unit type (B=capacity, S=core or common functions, M=subrack)
• Y: I for indoor
• Z: describes version, end-user visible change in functionality, new letter in alphabetical
order
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• Full subrack supported as one logical BTS
• Full subrack configuration as two logical BTSs, each composed
of half subrack is also possible
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SRAN Overview
AirScale Capacity ABIA plug in unit
RF1
RF2
RF3
RF4
RF5
Capacity plug in unit:
• Cell specific baseband processing
• Up to 6 PIU in Subrack for flexible expansion of BTS baseband capacity
• RF Module connectivity
• 6 x OBSAI/CPRI up to 9.8 Gbps
• 3 out of 6 CPRI interfaces support IQ compression
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RF6
SRAN Overview
Nokia AirScale System Module
SRAN cell sets allocation on full AirScale module
•
•
Up to 6xABIA cards available for SRAN cell set
allocation providing high capacity for sites.
GSM ABIA has to be connected to primary
Common Unit.
WCDMA
WCDMA
WCDMA
LTE
GSM
•
One ASIA card will be the „primary” unit
•
GSM can be allocated only on one ABIA in whole
SBTS
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WCDMA
ASIA
LTE
ASIA
Example deployment
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SRAN Overview
SRAN 19 feature highlights
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SRAN Overview
SRAN feature parity
Individual RAT feature parity
SRAN 19 Radio network and OSS releases
FDD-LTE 19
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WCDMA 19
GSM 19
NetAct 18A
SP1904
SRAN SW Release
Compatibility
SRAN SW
SRAN NE
SRAN SW Compatibility
Release
Compatibility
SBTS
SBTS 19
NetAct
NetAct18A SP1904 or Fast pass + NetAct 18A SP1811
onwards
BTSMED
BTSMED 19
RNC
RNC18, RNC19, mcRNC18, mcRNC19, ASRNC19
OMS
OMS19 onwards
BSC
BSC18 SP2.0, ASBSC19
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SRAN Overview
SRAN 19 migration features
SR002180
SCF conversion in WebEM/CLI
SBTS19 commissioning in WebEM
Offline SCF conversion
using
created SCF
from dedicated RAT BTS to SBTS19
Legacy RAT
LTE, WCDMA, GSM
SR002181
Mass upgrade from NetAct
Remote mass migration
by NetAct from WCDMA to SRAN 19
SRAN
SRAN 18/18SP
SRAN 18A
18
SR002179
Site upgrade from NetAct or WebEM
SRAN System Upgrade
SCF upgrade during SW upgrade
and LTE Migration to SRAN 19
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SBTS 19
SRAN Overview
SR002180 Offline SCF conversion from dedicated RAT BTS to SBTS 19
LTE
WCDMA
GSM
Merge LTE RAT
Merge WCDMA RAT
Merge GSM RAT
Merge SBTS
FL19 (AirScale)
→
SBTS19 (AirScale)
FL18 / 18 SP / 18A (AirScale)
→
SBTS19 (AirScale)
FL17A / FL17A SP (AirScale)
→
SBTS19 (AirScale)
FL19 (FSMF)
→
SBTS19 (AirScale)
FL18 / 18 SP / 18A (FSMF)
→
SBTS19 (AirScale)
FL17A / FL17A SP (FSMF)
→
SBTS19 (AirScale)
FL19 (FSMF)
→
SBTS19 (FSMF)
FL18 / 18 SP / 18A (FSMF)
→
SBTS19 (FSMF)
FL17A / 17A SP (FSMF)
→
SBTS19 (FSMF)
WBTS19 (FSMC/D/E/F)
→
SBTS19 (FSMF)
Feature provides SCF conversion from one or
several dedicated RAT BTS to SBTS19 release
CLI provides support for conversions when BTS HW
is not changed and only Single-RAT configuration.
SBTS Element Manager (ADMIN) GUI supports
different conversion paths.
PC (Windows/Linux)
SBTS EM
WBTS18 (FSMC/D/E/F)
→
SBTS19 (FSMF)
GF19 (FSMF)
→
SBTS19 (FSMF)
GF18 (FSMF)
→
SBTS19 (FSMF)
SBTS19 + FL19/18A/18 SP/17A/17A SP
(AirScale/FSMF)
→
SBTS19 (FSMF/AirScale)
SBTS19 + WBTS19/18 (FSMC/D/E/F)
→
SBTS19 (FSMF/AirScale)
SBTS19 + GF19/GF18 (FSMF)
→
SBTS19 (FSMF/AirScale)
SBTS19 + SBTS19/18A/18 SP/18/17A
(AirScale/FSMF)
→
SBTS19 (FSMF/AirScale)
(in offline
mode)
CLI
SCF
conversion
SCF
SCF
Manual update is
need after migration
to SBTS if WCDMA
BTS with 2 * FSMF
configuration is used
SCF
SIR
(GSM)
SIR = Site
Information
Report in GSM
Single-RAT(s)
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With SR002180 less manual work needed on site due to script for converting the existing SCF file to SBTS SCF format.
[click_1] SR002180 enables offline Site Configuration File (SCF) conversion from one or several single–radio access
technology BTS to SBTS 18A through the Web Element Manager (WebEM) and Command Line Interface (CLI) tool
[click_2] CLI support for conversions when BTS hardware is not changed and only Single-radio access technology
configuration.
[click_3] SBTS Element Manager (WebEM) Graphical User Interface supports different conversion paths.
•
•
•
Site Information Report is a new input file for conversion in GSM technology that reduces manual work in GSM
No support for migration from WCDMA BTS with dual FSMF configuration
Merging Legacy radio access technology with SBTS SCF data isn’t supported as well
[click_4] The supported migration paths are as indicated in the table
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SRAN Overview
System upgrade to SRAN 19 with SR002179
SRAN18/18SP
SRAN
SRAN18A
SR002179
SRAN System Upgrade
and LTE Migration to
SRAN 19
SBTS19
SBTS18/18SP, 18A Info Model conversion to SBTS19 Info Model is done during SW
upgrade. SW upgrade can be done from NetAct or BTS Element Manager.
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SRAN Overview
Legacy RATs remote migration to SRAN 19 with SR002179 & SR002181
LTE
FL18A/18SP/18 (AirScale)
FL19 (AirScale)
SR002179
FL18A/18SP/18 (FSMF)
WCDMA
WBTS18 (FSMF)
SR002181
WBTS17 (FSMF)
FL19 (FSMF)
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Remote site mass upgrade
from NetAct
SR002179 & SR002181
SBTS19
(Airscale)
SBTS19
(FSMF)
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SRAN Overview
Transport HW overview
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SRAN Overview
Rel’3 System Module - FSMF
FSMF Transport Interface
2 x Combo Ethernet Ports:
• 2x 1000/100BaseT, or
• 2x optional optical GE SFP, or
8x E1/T1/JT1 (twisted
pair):
4 x RJ48C-style ports with
2 x E1/T1/JT1 each
• FSMF provides the following Transport
interfaces (without the optional Transport
Sub-Module)
- 1x 100/1000 Base-T Ethernet port
- 1x optional optical (if not in use for RP3-01)
• Optional FTIF required in case of
- use of TDM interface for
• 1x 1000/100BaseT and
1 x optional optical GE SFP
• Packet Abis over TDM or
• synchronization input via PDH
- use of optical Ethernet (if optical SFP is already
used on FSMF for RF purposes)
- need for multiple Ethernet ports - backhauling
1x optional optical SFP (GE),
1x 100/1000Base-T
available for Transport
Ethernet port,
only if not used for RP3-01 (RF sharing)
dedicated for
Transport
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•
•
to extend the TRS capacity beyond 1GE
•
to provide redundancy
•
Transport chaining
Two FSMF modules can be chained
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SRAN Overview
Support of FSMF + FSMF with SRAN configurations
Transport termination
• The two FSMFs are numbered as:
Opt. PDU
FSM1
- FSM2 - no transport termination.
GSM&WCDMA
WCDMA
FSM2
WCDMA
• By default, FSM1 plays the "primary core" role and FSM2
is the "secondary core".
• Two FSMF are connected using a SRIO link and a
synchronization link (RP3 or HDMI)
LTE
LTE
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- FSM1 - the one having the transport connectivity
Opt.TRS ext
LTE
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SRAN Overview
AirScale Common ASIA plug in unit
Interfaces
DC-IN
EAC
SIN
SOUT
SEI1 SEI2
SRIO2 EIF2
EIF2
Port
EIF1…2
EIF3…5
SEI
SRIO
DC-IN
EAC
SIN
SOUT
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EIF3
SRIO1 EIF1
EIF4
EIF4
EIF5
LMP
# Physical I/F
Usage
2 SFP+
1/10GE optical or 1GE electrical transport
3 RJ45
1GE electrical transport
2 MiniSAS-HD Subrack extension, 2x 10GE
2 SFP+
Rapid IO connection for Flexi Multi Radio 10
1 DC terminal -48V DC Input
1 HDMI
External alarm & control, 6 alarms, 6 alarms/ctrls
1 HDMI
Synchronization input, GPS interface
1 HDMI
Synchronization output
Port
LMP
LEDs
RESET
Common plug-in unit:
• Centralized control processing
• Up to 2 units in one Subrack for
independent Base Stations or high
capacity configurations
• Integrated Ethernet transport
termination per Subrack side
Connectivity to:
• Transport (EIF)
• External System Module Extension
• AirScale SM Subrack (SEI)
• Flexi Multi Radio 10 SM (SRIO)
# Physical I/F
Usage
1 RJ-45
Local management port, 1G Ethernet
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Visual indication of status
2
Plug-in unit RESET, with several scenarios
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SRAN Overview
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