WCDMA BTS & Module
Overview
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CONTENTS
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WBTS Hardware Overview
WBTS Commissioning
WBTS Trouble shooting
RFS process
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Hardware Releases
• Release 1
FSMA /FSMB
No HSPA Features (HSDPA +HSUPA)
• Release 2
FSMC/FSMD/FSME
• Release 3
FSMF
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WBTS Hardware
• The modular design does not use any backplanes
• All Modules are interconnected via front panel
cabling
• Modules can be installed in separate locations
(Federless / Distributed Sites)
• Flexi BTS multimode system module is also
prepared for LTE evolution with a SW upgrade.
• High capacity system module
–FSMC with 240 CEs
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–FSME with 912 CEs
FSMD
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SYSTEM MODULE
Functions..
• telecom control
• system operation and maintenance
• baseband application
• transmission
• power distribution functionality.
• System Module can also act as a
System Extension Module operating in
a baseband extension mode.
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Module Mechanics..
All NSN Flexi WCDMA modules are outdoor-capable, hermetically sealed and IP 55
class protected.
Module core
• Core mechanics with optional front and back covers shield the module against water,
snow, and solid foreign objects, and makes the module IP 55 weather resistant.
• Core mechanics provide EMC shielding.
• All connectors are located in the front with weather-protecting covers.
Module casing
• Casing supports the pile of modules.
• Module Core can be changed ; even when the module is at the bottom of the module
stack.
Fan sub-module
• Fan sub-module provides the fresh air cooling to module.
• The System Module controls the fans according to temperature information.
• Two redundant fans enable module operation if one fails in normal temperature.
• Fan sub-module can be changed in during normal operation at sites where rear access
is provided.
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Power Supply Architecture
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FSMD
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FSMD Baseband Processing
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The Baseband Processor (FSPC, Flexi Signal Processor version C) terminates
the Iub user plane and is responsible for L1 processing of the air interface
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System Module type FSMC includes one signal processor, FSMD has two and
FSME has three
The traffic capacities are:
• FSMC with 1 FSPC: 240 CEs
• FSMD with 2 FSPCs: 576 CEs
• FSME with 3 FSPCs: 912 CEs
LED Indication
1 FSMD having 2 FSPC 1 FSPC – 7 DSP’s and in that 12 can used 1DSP
CE can be upgraded by adding a second System Module
•having
BTS 48
capacity
•
When the System Module is used as a System Extension Module
operating in a baseband extension mode, a transmission sub-module
is not installed
•
Synchronization is provided by the System Module
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Transmission Sub Modules
FTIB :- 29 W (Typical Consumption)
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FSMF(Rel. 3)
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FSMF
interfaces..
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FTIF (Optional)
• Integrated Ethernet transport (EIF1 - RJ45) is available in FSMF System
Module for IP sites.
• FTIF is an optional Transport Sub-module for Flexi Multiradio 10 BTS
System Module (FSMF).
• It provides eight E1/T1/JT1 and two Gigabit Ethernet interfaces.
• FTIF enhances the connectivity and transport mode options of Flexi
Multiradio 10 BTS.
Connectivity:
 Up to 8 x E1/T1/JT1 interfaces on 4 x “RJ48C-style” ports to
interconnect with TDM based transport networks or equipment on site
 Up to two additional Ethernet ports via optical/electrical combo ports for
chaining or collocation
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Flexi Rel.3 Multiradio System Module (FSMF)
System Module Rel.3 (so called Flexi Multiradio 10 BTS System Module) is new, software defined BTS for four different
technologies (GSM/WCDMA/LTE and LTE-Advanced).
Capacity of System Module Rel.3 can be extended with optional capacity extension sub modules (FBBA).
Up to two capacity extension sub modules can be used per single System Modules Rel.3.
FSMF System Module and FBBA extension sub modules are seen as one common pool of baseband capacity.
FSMF is Flexi Multiradio BTS 10 System
Module (Rel.3 HW)
FBBA is (Rel.3 HW) capacity extension
sub module for FSMF System Module.
• 133 x 447 x 420/560 mm (h x w x d)
• Outdoor: -35 to +55 ºC, IP65
• Weight: 10.1 - 19.7 kg
Typical power consumption:
• FSMF - 125W
• FBBA - 85W
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Flexi Rel.3 Multiradio System Module - FSMF
Optional Power
Distribution Sub-Module
(FPFD)
Optional
Transport SubModule Module
(FTIF)
System Module,
FSMF
Capacity Extension
Sub-Module, FBBA
Capacity
Extension SubModule, FBBA
Note that for WCDMA, version A.102 or newer type of FSMF and FBBA HW is
needed
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Flexi Rel.3 Multiradio System Module - FSMF
Connections
DC out
4 x (2x16 mm^2)
SRIO BB EXT1 BB EXT2
EIF1
SFP+ QSFP
QSFP
RJ45
EAC Sync InSync Out
HDMI HDMI HDMI
• 4 x OBSAI interface in System
Module, FSMF
• 1 x OBSAI interface per Capacity
Extension Sub-Module, FBBA
DC out DC in
PwrProfile2x16 mm^2 LMP
RJ45
EIF2/RF/6 RF/EXT1..3
SRIO
DC in
DC out SFP+
3xSFP+
SFP+
PwrProfilePwrProfile
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BB EXT RF/EXT
QSFP SFP+
Optional Transport sub-module, FTIF Summary
Integrated Ethernet transport (EIF1 - RJ45) is available in FSMF System Module for IP sites.
FTIF is an optional Transport Sub-module for Flexi Multiradio 10 BTS System Module (FSMF).
It provides eight E1/T1/JT1 and two Gigabit Ethernet interfaces.
FTIF enhances the connectivity and transport mode options of Flexi Multiradio 10 BTS.
Connectivity:
 Up to 8 x E1/T1/JT1 interfaces on 4 x “RJ48C-style” ports to interconnect with TDM based transport networks or equipment on
site
 Up to two additional Ethernet ports via optical/electrical combo ports for chaining or collocation
Transport modes:
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ATM Iub, Dual Iub and IP Iub over ML-PPP
Media conversion for chained or collocated BTS (CESoPSN) &
synchronization includes TDM (for using PDH as synch input)
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Optional Transport sub-module, FTIF Interfaces
Flexi Multiradio 10 System Module integrated Transport and FTIF build a single logical Transport node.
Each "RJ48C-Style" port offers 2 x E1/T1/JT1 interfaces which are both accessible via one FTCY cable.
Other E1/T1/JT1 cables are supported, they provide one PDH interface per RJ48C port (interfaces 1, 2, 3, and 4).
Interfaces
2 x Combo Ports; can work as:
•2 x 100/1000Base-T electrical GE, or
•2 x 1000Base-BX/LX/SX/ZX optical GE, or
•1 x 100/1000Base-T electrical GE +
•1 x 1000Base-BX/LX/SX/ZX optical GE.
8 x E1/T1/JT1 (100/110/120 ohm, twisted pair)
Capacity
•2 x 100/1000 Mbit/s
•2 x 1000 Mbit/s
•1 x 100/1000 Mbit/s
•1 x 1000 Mbit/s
8 x 2 Mbit/s (E1)
8 x 1.5 Mbit/s (T1)
 EIF1/EIF3 and EIF2/EIF4 are paired as one combo port
 The usage of EIF1 and EIF3 as well as EIF2 and EIF4 is mutually exclusive
 The usage of EIF1/EIF3 on this FTIF and EIF2 on FSMF is mutually exclusive
 The supported optical SFP’s 1000Base-BX/LX/SX/ZX are not part of the FTIF
delivery
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Tolerance
not relevant
± 50 ppm (E1)
± 32 ppm (T1/JT1)
Connector
•2 x RJ45
•2 x SFP1)
•RJ45 + SFP
4 x RJ48C
FSMF - Flexi Rel.3 Multiradio System Module capacity
SM rel.3
SM rel.2
Rel.2 and Rel.3 subunit (DSP) processing capability is different.
Rel.3 subunit provides higher capacity for R99, HSPA traffic and Interference cancelation for more
cells.
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Number
of cells
FSIA/B**
FSMD
1-3
5
12
4–6
4
11
7–9
2 + 1*
9 + 1*
10 – 12
1+1*
8 + 1*
FSMF**
5.5
5 + 0,5*
Available resources (subunits) can be used for CCCH processing, HSDPA
schedulers processing, HSUPA users and thr. processing, R99 users processing and
interference cancellation processing
Table assumes 10km cell
range and 2way Rx Div
One subunit provides 96 Rel.99
CE
** Capacity of FSMF System
Module (without Extension
submodules)
Also FSIA/B SM capacity w/o
FBIA
* Additional resources for CCCH
processing needed if one System
Module and more than 6 cells/10km cell
range/2way Rx div.
Note: Each SM rel.3 (FSMF) contains
CCCH processing resources for Basic
configurations included in HW capacity
General improvements in FSMF compared to FSIA/B &
FSMC/D/E
•System Module Chaining:
•FSMF & RU40 – up to 1
•FSMF & RU50 – up to 2
•Baseband capacity increase steps:
•FSMF – Modularity: add baseband expansion card, add
more system modules
FSMF HW : 4,5 x chaining capability
•Transport:
•FSMF – IP Transport interface included
•Power Distribution Unit (PDU):
•FSMF – optional
More flexible capacity increase options with
FSMF
No extra transport module needed with
FSMF
Power distribution unit only if needed with
FSMF
General improvements in FSMF compared to FSIA/B &
FSMC/D/E
•Number of RF Module interfaces (OBSAI):
•FSMF – 4 interfaces
•FSMF with 2 x FBBA – 6 Interfaces
FSMF has twice the RF Module interface
capacity
•RF Module chaining capability per RP3
•FSMF – 6 Gbps (= 16 cells in WCDMA with 2RX)
•Power consumption (typical value)
•FSMF – 125W (with IP transport)
FSMF has twice the cell capacity per OBSAI
interface
FSMF has 50% smaller power consumption
HSPA improvements in FSMF compared to FSIA/B &
FSMC/D/E
1/2
- FSMD/E: With 2 x FSMD/E, HSPA can not be split over SMs
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New baseband architecture in RU30 (1 GB baseband) uses internal SRIO (Serial Rapid IO)
chain between DSP processors for better timing and better HSPA and baseband capacity
(HSPA capacity increase ~200%, R99 capacity increase ~50%)
RFM
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FSMD (Master)
Rel2 System Module does not have external SRIO interface i.e. when Extension System
Module is connected, there is no SRIO between System Modules and thus HSPA schedulers
in Master System Module cannot communicate with Extension System Module DSPs
No SRIO
connector
FSMD (Extension)
•
 If HSDPA scheduler exists e.g. in Master System Module, then Uplink ( A-DCH and
HSUPA) traffic needs to be also processed there
baseband
board inside
System ModuleDSP DSP DSP DSP
SRIO
HSPA improvements in FSMF
- FSMF: Improved baseband pooling for HSPA with FSMF+FBBAs and with 2 x FSMF
Flexi Rel3 System Modules FSMF:
SRIO connection to
Extension System
Module
BB EXT1
interface
(QSFP)
BB EXT2
interface
(QSFP)
• SRIO connection exists between the System
Module (FSMF) and Capacity Extension SubModules (FBBA)
Possible to use baseband of System Module
(FSMF) and Capacity Extension Sub-Module
(FBBAs) in same pool for HSPA
• SRIO connection exists also between two
System modules (2 x FSMF in later release)
BB EXT interface (QSFP):
•3 x RP3, 6Gbit/s
•1 x RP3-01, 6Gbit/s
•1 x SRIO, 6Gbit/s
•1 x I2C (SDA, SCL)
•1 x Sync signals (FCB,
BTSclk)
SRIO
connection to
Extension SM
BB EXT interface
(QSFP)
SRIO
connection to
Extension SM
Supported System Module configurations:
System Module Compatibility
Master
Extension
Version
Supported in
BB Extension Module
(optional)
RU40
FSMF
SM3
x
FSMF
SM3
1 x FBBA
x
FSMF
SM3
2 x FBBA
x
Supported RF Modules with FSMF
FSMF supports Rel1 RF Modules (Single/Dual), Rel2 (Triple) and Rel3 RF Modules (Triple Modules with 80W and 6 Gbps).
Sample RF modules are as shown in below table
Abbreviation
Module
FRGP
Flexi 3-sector RF Module 2100
FRGQ
Flexi RRH 2TX 2100
FRGG
Flexi RRH 1TX 2100
FRGT
Flexi 3-sector RF Module 2100
1- 4 RF Modules (chains)
Max 4 x OBSAI
RN
C
FSMF
FBBA
FBBA
1x OBSAI
1x OBSAI
MoP for Replacement of FSIA/B & FSMC/D with FSMF
along with changes in commissioning steps
All new FSMF version A.103 modules are delivered with preinstalled LN4.0 1.2 (LTE SW). So FSMF SW needs to be updated to
the WCDMA version (WN8.0 2.0 or above) as follows before commissioning:
Detailed MoP is available in the “pdf “attached 
FSMF Features..
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Licensing aspects
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In RU 40 ,CE licenses are valid for R99 traffic
• HSDPA/HSUPA will have own capacity licenses that are called
respectively ‘HSDPA BTS processing sets 'and ‘HSUPA BTS
processing set’
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Rel99 CE licenses consumption:
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CCCH resources (if needed e.g. extended cell case) from pure System
Module rel.2 BTS
R99 users (PS, CS services)
A-DCH (Associated DCH)
HSDPA BTS processing set
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Each HSDPA BTS processing set has certain capacity of users and HSDPA
throughput
There are three types of HSDPA BTS processing set licenses – from 1 to 3
Processing set does not guarantee the maximum user amount and
throughput but additional features are needed (e.g. 64-QAM, 10/15 HSPDSCH codes, 72HSPA users per cell)
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HSUPA BTS processing set
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In RU40 HSUPA BTS processing set license allows for allocation of 24
HSUPA UEs and 5.8Mbps throughput
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R99 UEs can be allocated into one HSUPA processing set (per LCG) even
there is no R99 CE license (48 Rel99 CE)
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HSUPA BTS processing set does not enable peak UL throughputs, but it
can limit those (as HSDPA BTS processing set does for DL throughput).
For achieving peak UL throughputs customer needs to buy separate
license for peak throughput features like HSUPA 16QAM.
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HSUPA and HSDPA BTS
processing sets
• HSDPA BTS processing set 1: 32 users and 7.2Mbps
• HSDPA BTS processing set 2: 72 users and 21Mbps
• HSDPA BTS processing set 3: 72 users and 84Mbps
• HSUPA BTS processing set 1: 24 users and 5.8Mbps
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Local Cell Group
• Local Cell Grouping allows splitting available baseband capacity into
baseband pools responsible for processing traffic from dedicated group of
cells.
• Local Cell Grouping may be needed in case of BTSs with many cells, and
can be used in Multi Operator RAN (MORAN) case.
• When Local Cell Grouping is done – available BTS capacity is split among
LCG according to BTS commissioning settings. Baseband allocation to
LCG is constant
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In Rel 2 HW 1 SU= 48 CEs
In Rel 3 HW 1 SU=96 CEs
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RF Modules
Features..
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The RF Module is a stand-alone fully operational transceiver module with
integrated antenna filters.
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Radio-related signal processing is performed in the RF Module. It hosts the
RF functionality, and also provides power supply.
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The RF Module has integrated fans
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FRGP
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FRGT
• Smallest power consumption
• 80 W at antenna connector
• supports WCDMA and LTE in dedicated or concurrent mode
• provides 3 x 80W output power at the antenna connector
• WCDMA configurations up to 6+6+6 & up to 2 x 20 MHZ LTE carrier
• Integrated OVP protection level in DC connector
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WBTS Commissioning
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System Module
Replacement
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Take back up of existing commissioning files
Take a snap of License management window with Target id before starting
activity.
Do not switch off the RF module.
Swap the System Module
Power on the SM and during the restart process ,please interconnect optical
cable between RF module & SM,
NB:- Please do not connect the IuB
Do the commissioning by selecting the template option and using old
commissioning file
Once commissiong is completed pls confirm the target id is same as that of
old module . Then pls connect the IuB to load all the license back from
OSS pool to NodeB
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System Module LED
Indications..
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TOP
enabling
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RFS (Restore Factory Settings)
• System module is restored to a plain, factory delivered condition.
• FSMD:- RFSToolv2_213
• FSMF:- RFSToolv3_107
When to Use
• A problem happened during installation/commissioning phase when
new/replacement unit has been installed to network.
• BTS Site Manager connection cannot be established.
• SW mismatches between different Flexi BTS HW modules. SW download
progress may not start at all or is partly downloaded to BTS but not
completely.
• Commissioning steps cannot be successfully completed. BTS cannot
become operational with normal re-commissioning steps.
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• FSM cannot be reused in another BTS site due to existing site
configuration and licensing configuration.
• FSM needs to be reused in another technology.
Steps..
1) Uncompress RFSToolv3 delivery package to local directory
2) PC's network properties shall be specified to match the following
settings: IP address as 192.168.255.126 & subnet mask as
255.255.254.0.
3) Store target SW (in zip format) to directory .\ RFSToolv3\BTSSW\
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CE count:
There are two FSPx’s in FSMD & one in FSIA.
RU20 (WN6.0)
Each FSPx have 7 Faraday’s (DSPs). So total CE count in FSMD =
(7+7)*36=504, Out of which 396 are available for traffic use since rest is
used for control signalling.
In FSIA CE count is, 7*36 = 252, i.e. 250.
i.e. In RU20, one FSPx constitutes ~250 CEs.
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RU30 (WN7.0)
Each FSPx have 7 Faraday’s (DSPs). So total Rel.99 CE count in
FSMD = (7+7)*48=672. In RU30, Subunits count also introduced along
with Rel.99 CE, HSDPA & HSUPA processing sets. 14 Subunits are
there in FSMD, out of which 12 SU are available for traffic: therefore,
Rel.99 CE available is 12*48 = 576.
In FSIA out of seven, 6 SU is available for traffic. So Rel.99 CE for
traffic is, 6*48 = 288
The main diff. b/w RU20/RU30 is that, each DSP in an FSPx was
having 36 & 48 CE capacity each.
Sample calculation in the attachment.
1 to 4 HSDPA PS2 licenses utilizes 2.25 SUs & each HSUPA PS1
uses 1.5 SUs. (for 1 LCG - Local Cell Group & non-MIMO)
Number of SUs used by Rel.99 CEs is obtained by dividing the
Rel.99 CE value by 48.
Total SU should be maximum 12 in the case of FSMD & 5 in the
case of FSIA (without FBIA).
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