2g flexi bts information slides
TRANSCRIPT
1 © 2005 Nokia Flexi EDGE BTS / 26.04.2006/ DDi
Company Confidential
2G FLEXI BTS
2 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
1. Simple and cost-effective site build-outs• Expansion to high capacity within the same footprint
• Reduced site costs: lower rents, new flexibility in site selection
• Faster site commissioning: minimized number of BTS building blocks, easy start-up configurations
• Fewer sites: wide range of coverage features with maximized RF performance
2. Single platform for flexible multimode sites• Same modules for all site types
• Common platform for GSM/EDGE/WCDMA/HSPA and other radio variants: lower site operating costs
Main Features for new GSM/EDGE BTS platform
3 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Small but efficient:1640 subscribers* served with a BTS that is just over 0.5 m high* @15 mErl, 2% blocking* (D) 422 mm for cabinet-installed modules
Small but efficient:1640 subscribers* served with a BTS that is just over 0.5 m high* @15 mErl, 2% blocking* (D) 422 mm for cabinet-installed modules
Example of 2+2+2TRX
configuration
H 538mm
D 422* - 560mm W 447mm
Nokia Flexi BTS platform:novel approach for GSM/EDGE/WCDMA BTS sites
• BTS configurations are built with weather-proof modules; capacity is expanded by adding modules
• Cost efficient (whole life cycle including product cost and operational costs)
• UltraSite level performance and functionality
• Backward compatibility (existing sites, Abis, BSC)
• Support for EDGE evolution Nokia is first to adopt this novel modular approach
• Same modules used for all site types
• Indoor and outdoor
• Micro- and macrocellular • Common Flexi platform brings the same modular
principle and design to GSM/EDGE and WCDMA/HSPA BTS sites
• Modules can be installed in Flexi optional cabinets or other 19” racks if required
4 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Modular Flexi BTS Platform
No cabinet is needed for module-based BTS
• Modules are in weather-proof casings with IP55 protection, no BTS cabinet is needed
• The casings direct air-flows and allow removal of the modules from the stack
• Temperature tolerance: -40°C …+50°C; temporarily +55 °C
Modules can be installed in cabinets or 19” racks
• Modules have no back and front covers, or casings, when used in cabinets
Standard stand-alone module 3HU
H 133 mm
W 447 mm
D 422* - 560 mm
* (D) 422 mm for cabinet-installed modules
Standard module weight ~20 kg
Module is small and light, allowing one person to transport and install BTS without using lifting equipment
2TRX sector module
5 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
System Module• O&M, power distribution,
system bus
Main modules of Flexi EDGE BTS
Sector module • Logical module comprising
Dual TRX and Dual duplexer modules (1 Dual duplexer module for each sector)Dual TRX module
• 2 carrier unit• Either stand-alone or part of
Sector module
Dual duplexer module (optional)
• Duplexing & multicoupling, VSWR, Bias T
• Min 1/ sector; paired with Dual TRX module
6 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Wideband combiner sub-module
• 2:1 combiner• Attached to DTRX; max 2/DTRX
Remote Tune Combiner module • 6:1 combiner, ETSI frequencies• Duplexing & multicoupling, VSWR, Bias
T
Power AC-DC sub-module• AC/DC converter: from 230V AC to 48V
DC • Max 3 per Power module; 1kW power
each
Power Battery sub-module• Minute-level batteries for max 2 min• Max 3 per Power module
Power module• Support frame for 4 power sub-modules:
AC/DC converters and minute-level batteries
• 3x1kW supply supports max 12 TRX (6 DTRX)
Power DC-DC module• DC/DC converter: from external 24V DC
to internal 48V DC• Max 2kW supply
Optional modules of Flexi EDGE BTS (1/2)
7 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Optional modules and sub-modules (2/2)
Module casings
• 2HU and 3HU casings for module stacking, guiding airflows and IP55 protection
Mounting covers• Front and back covers for modules
System extension module• For over 12TRX and RTC configurations• Power distribution, system bus
Site support module• 7HU IP55 space for third party LTE or 19”
AC/DC converters in Flexi outdoor cabinets
Transmission sub-modules1. E1 AS sub-module 2. E1/T1 S sub-module3. Flexbus sub-module
Integrated long term battery backup (MIBBU)
• Indoor sites: MIBBU + separate battery give long-term battery back-up
• Outdoor sites: MIBBU in Site support module + separate battery
Cabinets: indoor and outdoor
• Optional cabinets where requiredHEX LTE
LTELTELTE
MIBBU
battFAN batt batt batt
8 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
EX_A EDGE dual TRX moduleT = 800 MHzG = 900 MHzD = 1800 MHzP = 1900 MHz
ER_A EDGE RF dual duplexer moduleT = 800 MHzG= 900 MHzJ = 900 MHz SB-JH= 900 MHz SB-HD = 1800 MHzP= 1900 MHz
ESMA EDGE System ModuleFI_A Flexi platform Interface sub-module
E = E1 AS sub-moduleP = E1/T1 S sub-moduleF = Flexbus sub-module
EC_A EDGE RTC (Cavity combiner) moduleG = 900 MHzJ = 900 MHz - JD = 1800 MHz
EW_A EDGE Wide band combiner sub-module
G = 800/900 MHzD = 1800 MHzP = 1900 MHz
EUCA EDGE Upgrade Cable kit
EM_A Flexi Module CasingsT = 2 HUH = 3 HU
ESEA EDGE System Extension module
MIBBU Integrated long term battery backup
Flexi BTS specific modules
9 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Flexi EDGE BTS: simpler architecture with fewer units
• Smallest starting configuration with 2 modules: • Sector module, incl Dual TRX module and Dual duplexer module*
• System module
• All Flexi EDGE BTS modules are GSM and EDGE compliant
System module(transport)System module(transport)
3HU
Dual TRX module (2 carriers)Dual TRX module (2 carriers)
Dual duplexer module (optional)Dual duplexer module (optional) 1H
U2HU
3HU
* 1 Dual duplexer module is required for each sector, it is not needed for further TRX expansions
10 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Flexi EDGE: from small to large configurations
• Flexible capacity increase in a small volume: 1 to 24 TRX in 1-16 sectors under 1 BCF
• DTRX module comprises 2 carriers but single carrier TRX increments are supported with Software licensing
Minimum configuration
1-2TRX , 2 modules
Maximum configuration/BCF
8+8+8TRX, 14 modules
11 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Stack 2+2+2
8+8+8 Indoor48V DC
4+4+4 Outdoor with Batteries
Sys module
Stack 2 TRX
Stack 4+4+4
Sect module Sect moduleSect module
Sect module
Examples of Flexi EDGE configurations
Sys module
Sect moduleSect module
Sect module
Sys module
Sect moduleSect module
Sect module
Sys module
DTRX
DTRX
DTRX
DTR
X
DTR
X
MIBBU
HEXLTE
LTE
LTE
LTE
FAN batt batt batt batt
Sys module
Sect module
Sect module
DTRX
DTRX
DTRX
DTRX
DTRX
DTRX
DTRX
DTRX
DTRX
Sect module
Sys ext module
Sys module
Sys ext module
DTRX (Dual TRX)
Sector module (DTRX + duplex filter)
GSM/EDGE Modules
12 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Flexi EDGE BTS Architecture
SystemModule
ABIS
DIGITAL RF Ethernet
SynchronizationABIS
BB RF
DTRX
BB RF
DTRX
BB RF
DTRX
RF cabling
BB RF
DTRX
BB RF
DTRX
BB RF
DTRX
DDU
Digital I/O
DDU
DDU
13 © 2005 Nokia Flexi EDGE BTS / 26.04.2006/ DDi
Company Confidential
Mechanical Architecture and installation options
System Module
Plinth, in floor installation
Roof with lock, in outdoor
TRX Module
14 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Wall installation Pole installation Floor installation
Nokia Flexi Base StationTurn any location to a feasible BTS site
•Max 4+4+4 or
•Dualband 2+2+2
•Supported
•Only upto 2+2+2 feasible
•Max 4+4+4 or
•Dualband 2+2+2
Earthquake:
•Zone 4 with 4 modules;
•Zone 2 with 9 modules
15 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Flexi BTS suites for all traditional sites
1) Rooftop Outdoor
2) Rooftop Indoor
5) Rural Outdoor
Mast
6) Rural Outdoor
Tower
4) Sub-Urban Outdoor
Pole
3) Rooftop Cabinet
16 © 2005 Nokia Flexi EDGE BTS / 26.04.2006/ DDi
Company Confidential
Configuration examples
17 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Examples of Module BTS configurations and comparison to Ultrasite
Stack 2+2+2 ->4+4+4 extension
Indoor EDGE4+4+4 &WCDMA 2+2+2
Sys box
Sys box
Sys module
Sys ext module
DTRX
CDTRX (DTRX + duplex filter)
8+8+848VDCindoor
Sys box
Sys ext box
Outdoor 4+4+4with Batteries
Sys box
HEX LTE
LTE
LTE
LTE
MIBBU
battFAN batt batt batt
GSM/EDGE Modules
WCDMA Modules
Sys module
RF module Sys box
18 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Du
ple
xer
LNA
Du
ple
xer
LNA
Du
ple
xer
LNA+Multi-
coupler
Du
ple
xer
LNA+Multi-
coupler
Flexi EDGE BTS Combining By-pass, 2-way RX diversity
Dual Duplexer Antennas
DualTRXExample:2 TRX/cell
TX1
RX1 MainDiv
Div
RX2 MainDiv
TX22+2+2 (H*W*D):12HU x 19” x 400mm
Antenna connectors
+47 dBm2.5 dB loss *
+44.5 dBm
19 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
ULTRASITE Combining By-pass, 2-way RX diversity
Example: 2 TRX/cell
Tranceiver RF Units
Dual Duplex Unit
Receive Multicoupler
Unit
20 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Flexi EDGE BTS 2-way Wideband Combining, 2-way RX diversity
Example: 4 TRX per CellWideband Combiners Antennas
Dual Duplexer
DualTRXs
Du
ple
xer
LNA
Du
plexer
LNA
Du
plexer
LNA+Multi-
coupler
Du
plexer
LNA+Multi-
coupler
WBC
WBCTX1
RX1 MainDiv
DivRX2 Main
DivTX2
TX3
RX3 MainDiv
DivRX4 Main
DivTX4
Antenna connectors
This picture is not correctPhase feedback is not needed
(is used only for DPTRXs)
21 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
ULTRASITE2-way Wideband Combining, 2-way RX diversity
Example: 4 TRX per Cell
Tranceiver RF Units
Dual Duplex Unit
Receive Multicoupler
Units
Wideband Combiner unit
Wideband Combiner unit
22 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Flexi EDGE BTS 4+4+4 indoor 24VDC
Cables:Green: BusLight brown: PwrDark red: DDU-DTRXBlack: Antenna cablesRed small: RxBlue small: TxRed&blue thick: PSU in&out
Ultrasite4+4+4Two-Way WBC
Example: 4+4+4 configuration
Dual Duplexer
DTRX
System Module
PSU
23 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Du
ple
xer LNA
Du
ple
xer
LNA
Du
ple
xer LNA+Multi-
coupler
Du
ple
xer
LNA+Multi-
coupler
Flexi EDGE BTS 4-way Wideband Combining, 2-way RX
diversity
Example:8 TRX/cell
WBCWBC
WBC
WBC
Wideband Combiners Dual Duplexer
AntennasDualTRXs
WBC
WBC
TX1RX1 Main
DivdivRX2
MainDiv
TX2
TX3RX3 Main
DivdivRX4
MainDiv
TX4
TX5RX5 Main
DivdivRX6
MainDiv
TX6
TX7RX7 Main
DivdivRX8
MainDiv
TX8
24 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Ultrasite4-way Wideband Combining, 2-way RX
diversity
Receive Multicoupler
Units
Dual Duplex Unit
Wideband Combiner units
Tranceiver RF Units
25 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Du
ple
xer
LNA
Du
ple
xer
LNA
Du
ple
xer
LNA+Multi-
coupler
Du
ple
xer
LNA+Multi-
coupler
Flexi EDGE BTS using DPTRX (TCC Combining),
2-way RX diversity
WBC
Wideband Combiner(coherent)
Dual Duplexer
Antennas& MHA DualTRX
WBCTX1
RX1 MainDiv
Div
RX2 MainDiv
TX2
+47 dBm
+49.5 dBm 0.8 dB loss *
+48.7 dBm
+47 dBm
Example: DPTRX 1 Carrier/Cell
Phase feedback
* The Nominal loss value is 0.8 dB. The guaranteed loss value is
2.5 dB
26 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Flexi EDGE BTS example using DPTRXsto improve WBC loss compensation
2-way Wideband Combining, 2-way RX diversityExample:4 Carrier/cell
Wideband Combiner
Dual
Duplexer AntennasDualTRXs
TX1
RX1MainDiv
RX2 MainDiv
TX2
TX3
RX3MainDiv
RX4 MainDiv
TX4
+47 dBm2.5 dB loss *
+43.5 dBm
+40.5 dBm
WBC
WBC
Du
plexer
LNA
Du
plexer
LNA
LNA+Multi-
coupler
Du
plexer
Du
plexer
LNA+Multi-
coupler
Phase feedback
TX1
RX1MainDiv
RX2 MainDiv
TX2
TX3
RX3MainDiv
RX4 MainDiv
TX4
TX7
RX7MainDiv
RX8 MainDiv
TX8
TX5
RX5MainDiv
RX6 MainDiv
TX6
CWBC
CWBC
WBC
WBC
2.5 dB loss
+43.5 dBm
Du
plexer
LNA
Du
plexer
LNA
LNA+Multi-
coupler
Du
plexer
Du
plexer
LNA+Multi-
coupler
+47 dBm +49.5 dBm +46 dBm
Wideband Combiners
Dual
Duplexer AntennasDual Power TRXs
3.5 dB loss
3.5 dB loss
CoherentWideband Combiners
CWBC
CWBC
27 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Nokia Flexi EDGE BTS RF performance is the best in industry
Flexi EDGE BTS: 0.2-0.5 dBm higher output power at TOCas RF cables are connected directly to DTRX units
28 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
With MHA Flexi EDGE BTS system sensitivity remains constant
UltraSite MHA compensates for feeder losses and makes the Flexi system sensitivity constant regardless of feeder loss
Antenna feeder loss
Flexi EDGE system sensitivity1800 2-Way Diversity
Without MHA
With MHA MHA improvement
dB dBm dBm dB
0 -115,5 -116,0-116,0 0,5
1 -114,5 -116,0-116,0 1,5
2 -113,5 -116,0-116,0 2,5
33 -112,5-112,5 -116,0-116,0 3,53,5
4 -111,5 -116,0-116,0 4,5
5 -110,5 -116,0-116,0 5,5
6 -109,5 -116,0-116,0 6,5
7 -108,5 -116,0-116,0 7,5
8 -107,5 -116,0-116,0 8,5
9 -106,5 -116,0-116,0 9,5
10 -105,5 -116,0-116,0 10,5
29 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Compatibility
• EP1.0• S12
• OSS4.1
• EP1.1• S13
• OSS4.2
• EP2.0• S14
• OSS5.1
30 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
EP1.1 Features Candidates
• Ecell for CS calls
• DFCA
• Antenna Hopping
• 24TRX/BCF
• TCC with 2UD/4UD• Licenced by BSC feature
• EasyWizard for Flexi EDGE BTS
• ECell for data packet (GMSK only)
• Ecell for CS calls
• DFCA
• Antenna Hopping
• 24TRX/BCF
• TCC with 2UD/4UD• Licenced by BSC feature
• EasyWizard for Flexi EDGE BTS
• ECell for data packet (GMSK only)
Transport
• TruNet (Circuit Manager)
Transport
• TruNet (Circuit Manager)
31 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
EP2.0 Feature Candidates• IDD/4UD
• No licence needed
• Satellite Abis• CS supported but not AMR
• PS supported
• With consideration with future support also for AMR
• Mobile speed detection • Same specification as in CX
• Authentication & security• as defined in BSS 13 level specifications
• Re-assess port EM to SEM
• A5/3 Ciphering Support
• WB-AMR
• RTT improvements
• IDD/4UD• No licence needed
• Satellite Abis• CS supported but not AMR
• PS supported
• With consideration with future support also for AMR
• Mobile speed detection • Same specification as in CX
• Authentication & security• as defined in BSS 13 level specifications
• Re-assess port EM to SEM
• A5/3 Ciphering Support
• WB-AMR
• RTT improvements
Transport
• 16 kbit/s level XC between E1/T1 interfaces
• License Mgmt. (e-features)
• E1/T1 ports in blocks of 2
• PDH loop protection
• A-bis over IP (CES over Ethernet)
• IP DCN
Transport
• 16 kbit/s level XC between E1/T1 interfaces
• License Mgmt. (e-features)
• E1/T1 ports in blocks of 2
• PDH loop protection
• A-bis over IP (CES over Ethernet)
• IP DCN
32 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Backup slides
33 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Flexi EDGE Dual TRX Module (EXxA)
• Dual TRX Module (DTRX) is a two carrier TRX unit, used as: • a stand alone TRX module• or a Sector module with the Dual duplexer module (and optional wideband combiner)• or with RTC module• or in Coverage mode (as Double Power TRX (DPTRX) or for Intelligent Downlink Diversity)
• It consists of: • Baseband part that is common to both TRXs• RF part (2 independent transmit (TX) chains and 4 receive (RX) chains, incl 2 for diversity) • 1-2 optional Wideband combiner (WBC) sub-modules
• RX diversity options of the DTRX are:• 2-way diversity: 2 RX inputs/DTRX used when both TRXs are in same sector as DTRX unit
shares RX signals between TRXs. All 4 RX inputs/DTRX are used when TRXs are in different sectors
• 4-way diversity: All 4 RX inputs/DTRX used, only with SRC or with DPTRX• All DTRX external communication is handled through single Gigabit Ethernet
interface
2HU
4xRX TX2xWideband combiners1xBus
1xDTRX-DDU
1xPowerDPTRX
TX
34 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Flexi EDGE Dual Duplexer Module (ERxA)
• Dual duplexer (DDU) module together with Dual TRX create a Sector module• Min one DDU per sector is needed; it must be attached to DTRX module
• The DDU provides duplex functionality to combine TX and RX signals in a common antenna feeder
• 2 antenna connections (for 1 or 2 sectors) for by-pass and combined configurations
• 2 TX inputs and 4+4 RX outputs (4 RX from antenna 1 and 4 RX from antenna 2)
• The DDU contains two duplex filters, two Low Noise Amplifiers (LNAs), two Bias-Ts with VSWR measurement functionality and common TRX loop for TRXs in one sector
• The TRX loop is controlled through the Sector module • All DTRXs in the sector have to request loop service from the Sector module
• Loop can be performed from either TX to any of 8 RX outputs
• Only one TX and one RX can be simultaneously connected (no looping with Diversity Combining)
• The LNAs have high and low gain states for supporting high gain MHAs1
HU8xRX TXTX RX for
external BTS
RX for external
BTS
35 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Flexi EDGE Sector Module
• Sector module is a logical unit consisting of 2 building blocks:• Dual TRX (DTRX) module
• Dual duplexer module
• Minimum one sector module is needed per sector
• There is space for 1 or 2 optional Wideband combiner (WBC) sub-modules in the DTRX module
• For 4-way UL diversity 2 Sector modules are needed per sector
Dual TRX module
Dual duplexer module
1-2 Wideband combiners
3HU
36 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
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ESMA (Flexi EDGE System Module A) 1/2O&M, power distribution, system bus
TRS submodule
• 8 * E1/T1 • 8 * E1• 2 * FB
Power Distribution Unit
8 TRX ports to connect Ethernet and synchronization signals to DTRX +1 port for connection to ESE
37 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
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• 3HU Unit for BTS common functionalities and internal/external connections
• Supports up to 6 DTRX modules (up to 12TRX)
• 5 main functions of the module:• BTS O&M: SW downloading and storing x2, configuration management, reference
clock and alarms
• BTS integrated transport: Abis transmission
• Baseband switching: communication between modules via Ethernet switch
• BTS power distribution: single point for power intake, power distribution to all modules
• BTS internal and external synchronizationPDU (power distribution unit) 1x48V intake
Interchangeable Transport module:8xE1, 8xE1/T1 or 2x Flexbus
Aux equipment (Q1) 2xSISO, Local Man. Port
6x Ethernet 1xEAC (External Alarm & Control)12x alarm inputs+6x control outputs
PDU (power distribution unit) 6x48V to other modules
Flexi EDGE System Module (ESMA) 2/2without case
38 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
• 3HU Unit for BTS common functionalities and internal/external connections
• Supports up to 6 DTRX modules (1 to 12TRX)
• 5 main functions of the module:• BTS O&M: SW downloading and storing x2, configuration management, reference clock
and alarms
• BTS integrated transport: Abis transmission
• Baseband switching: communication between modules via Ethernet switch
• Power distribution to the BTS: single point for power intake, power distribution to modules
• BTS internal and external synchronization
3HU
Flexi EDGE System Module with Case
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Customer Confidential
Flexi EDGE RTC Module (Cavity combiner) (ECxA)
• Optional RTC module for ETSI frequency bands supports max 6 TRX• One RTC per sector is needed; 2 RTCs can support up to 12 carriers/sector
• RTC provides the duplex functionality to combine up to 6 TX signals in a common antenna feeder
• RTC supports antenna sharing (co-siting) with another BTS
• RTC module consists of : tunable cavity combiner, LNAs for RX signal and duplex filter and RX filter for diversity signal, Bias-T, VSWR and MHA power feed
• RTC provides the TRX loop; DTRXs request the loop service• 4 HU RTC modules require cabinet installation• Functioning principle:
• RTC receives the main RX signal through the duplex filter from ANT1 and diversity signal through RX filter from ANT2
• RX outputs are split into two groups: one group is used for main RX and the other for diversity RX
• In 12 TRX sectors all 6 outputs come from one antenna: 1st RTC provides main RX outputs from its ANT1, 2nd RTC provides diverse RX outputs from its ANT1
4HU
6x TX
6x RX 1xExt RX in, 1xExt RX out
40 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Flexi WCDMA BTS Architecture
System Module
Iu
DIGITAL RF Ethernet
SynchronizationIu
RF
BB RF
RF
41 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Internal Interfaces Ethernet Architecture
• All traffic between System Module and TRX Module is handled over Gigabit Ethernet.
• This traffic contains:• Hopping BUS, former FBUS traffic• ABIS, former D1 BUS traffic• O&M, former D2 BUS traffic
• Hopping BUS traffic flow is purely between TRXs. The system module provides only Ethernet switch for this traffic, but does not otherwise see this data.
• ABIS traffic is transferred between ABIS and TRXs. The Network Processor in the System Module takes care of this message transfer.
• O&M data transfers go between BTS O&M SW in the Network Processor and the TRX O&M SW in the TRX.
BB RF
TRXSystem Module
ABIS
BB RF
TRX
Ethernet
PHY
Ethernet
SwItch
NetworkProcessor
ABIS
PHY
ABIS Traffic (Former D1-Bus)
Hopping Bus Traffic (Former F-Bus)
O&M Traffic (Former D2-Bus)
PHY = Physical Device
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Power(Optional)Power(Optional)
Simpler Architecture with Low Unit Count
System Module(Transport)System Module(Transport)
RTC Module(Optional)RTC Module(Optional)
TRX Module(2 Carriers)TRX Module(2 Carriers)
PowerAC/DC24VDC
BASE BAND Processing
CONTROL DC Power48 V
BBU
Filtering, Duplexing
GSM/EDGE 800/900/1800/1900
E1/T1 Flexbus
Ethernet
WB DuplexingWB Duplexing
WidebandCombining
Filtering, Duplexing
A-Bis interfaces
43 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
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Dual TRX ModuleBlock Diagram
48V
Oscillator
Circuitry
DSP 1
SDRAM
EMIFA
Ethernet
PHY
EMIFB BB ASIC
PSU
Sync
TX IF/RF
Clocks / Sync
TX DAC(s)
RX ADC(s)RX IF
I/O,Alarms
TX
48V
Supply Voltages
TX IF/RFTX DAC(s)
RX ADC(s) RX IF
FB ADC TX FB
I/O,Alarms
TX
TX FHS
RX FHS
28V PSU
TX FHS
RX FHS
28V PSU
TX PA
Div RX 1
Div RX 2 3dB
Main RX 1
Main RX 2 3dB
TX PA
WBC
TX 1out
TX 2out
DRX2
DRX1
MRX2
MRX1
Feedbackfor TCC
+48V
TCCADC(s)
TCC
DDUADC(s)
I2C
AbbreviationsADC Analog to Digital Converter DAC Digital to Analog Converter FB Feed BackFHS Frequency Hopping Synthesizer
PSU Power SupplyPHY Physical DeviceTCC TX Coherent CombiningWBC Wide Band Combiner
44 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
External Interfaces• Power Input
• 48 V Input
• Transmission Interfaces• 8 x E1/T1 symmetrical with RJ45• 8 x E1 coaxial with SMB • 2 x Flexbus with TNC
• External BTS, Site Support or Alarm/Control Interfaces• EAC, External Alarm and Control, 12 Inputs, 6 Outputs• SYNC In, Synchronization input interface (FCLK and FN)• SYNC Out, Synchronization output interface(FCLK and FN)• Q1, Site Support System Management• SS, Two Ethernet interfaces• LMP, Local Management Port
• Synchronization outputs for Test Equipment (In Sync connector)
• 13 MHz, BTS Reference Clock• FCLK, Frame Clock
• RF Interfaces• 2…12 Duplex antenna Interfaces
45 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Internal Interfaces
• Ethernet / Synchronization Interface• Ethernet is used as main communication link between System Module and
DTRX Module. It is also used for BB hopping data transfers between DTRX modules.
• REF_CLK (6.5 MHz REF): The System Module Supplies reference clock for TRXs and RTC.
• FCLK/FN: The System Module Supplies Frame Clock and Frame Number to the TRX. These are multiplexed in a single line.
• DTRX – DDU Interface• DTRX Controls DDU through Digital Interface. This interface contains direct
digital control signals and I2C bus for memory access and slow controls.
46 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Flexi BTS powering• All modules operate with 48VDC and have integrated
DC/DC converters for module internal voltages.• 48VDC may be supplied from:
• External BBU• MIBBU in FCSA or in FCIA• Optional AC/DC module with optional minute level BBU
provides the 48V DC input to the power distribution• Optional 24VDC/DC module
• 48V DC power distribution (PDU) is located in the System Module and in the System Extension Module
• The input for the System Module is nominal – 48VDC with positive earth
• The System Module has – 48V input with max 25 mm2 cables (screw terminal)
• PDU distributes DC power to other (max 8 mm2 cables)
• DC input power feed (48V) for Flexi EDGE BTS BTS has floating ground design
• Nominal 48 V DC, input range is 40.5 – 57 V DC.• Supply type: Two wire
• All functional blocks/submodules in the module of Flexi EDGE BTS BTS are designed as floating 48 V DC input Voltage
• Either positive or negative ground power feed for Flexi WCDMA BTS can be used
• All modules with DC input have input voltage reverse polarity protection
RF Module
RF Module
RF Module
System module
DC in
Nokia Site Support
or
3rdparty cabinet
BB Ext Module
TRX Module
TRX Module
TRX Module
System module
DC in
Nokia Site Support
or
3rdparty cabinet
RTC Module
47 © 2005 Nokia Flexi EDGE BTS / 26.04.2006/ DDi
Company Confidential
More configuration examples
48 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Flexi EDGE BTS 4-way Wideband Combining, 2-way RX diversity
Example: 8 TRx / Cell
Wideband Combiners Dual Duplexer
AntennasDualTRXs
Du
ple
xer
LNA
Du
ple
xer
LNA
Du
ple
xer
LNA+Multi-
coupler
Du
ple
xer
LNA+Multi-
coupler
WBCWBC
WBC
WBCWBC
WBC
TX1RX1 Main
DivdivRX2
MainDiv
TX2
TX3RX3 Main
DivdivRX4
MainDiv
TX4
TX5RX5 Main
DivdivRX6
MainDiv
TX6
TX7RX7 Main
DivdivRX8
MainDiv
TX8
49 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Cables:Green: BusLight brown: PwrDark red: DDU-DTRXBlack: Antenna cablesRed small: RxBlue small: TxSmall gray: phase detector
Dual Duplexer
DTRX
DTRX
DTRX
DTRX
System Module
System Extension Module
Example: Flexi EDGE BTS 8+8+8 indoor configuration
WBC
WBC
WBC
50 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Du
ple
xerLNA+Multi-
coupler
Cavities
LNA+Multi-
coupler
RX
filter R
X filter
TX5RX5 main
divRX6 main
TX6
TX3RX3 main
divRX4 main
TX4
Flexi EDGE BTSRTC (Remote Tune Combining) , 2-way RX
diversity
Example:6 TRX/cell
Remote TuneCombiner
AntennasDualTRXs3
3
3
3TX1RX1 Main
DivdivRX2
MainDiv
TX2
51 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
ULTRASITE Configuration Example
RTC , 2-way RX diversity, 6TRX/sector
AntennaAntennass
TRX RF TRX RF UnitsUnits
ReceiveReceiveMulticouplersMulticouplers
Remote TuneRemote TuneCombinerCombiner
TX
RXmain
div
TX
RXmain
div
TX
RXmain
div
TX
RXmain
div
TX
RXmain
div
splitter
splitter
6
6
6
main
div
Cavities
LNAs
Du
ple
xer
52 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Du
ple
xerLNA+Multi-
coupler
Cavities
LNA+Multi-
coupler
RX
filter R
X filter D
up
lexerLNA+
Multi-coupler
Cavities
LNA+Multi-
coupler
RX
filter R
X filter
TX5RX5 main
divRX6 main
TX6
TX3RX3 main
divRX4 main
TX4
Remote Tune Combining, 2-way RX diversity
Example:12 TRX/cell
Remote TuneCombiners
AntennasDualTRXs3
3
3
3
TX11RX5 main
divRX6 main
TX6
TX9RX3 main
divRX4 main
TX43
3
3
3
TX1RX1 Main
DivdivRX2
MainDiv
TX2
TX7RX7 Main
DivdivRX8
MainDiv
TX8
53 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Du
ple
xer
LNA
Du
ple
xer
LNA
Du
ple
xer
LNA+Multi-
coupler D
up
lexer
LNA+Multi-
coupler
Du
ple
xer
LNA
Du
ple
xer
LNA
Du
ple
xer
LNA+Multi-
coupler
Du
ple
xer
LNA+Multi-
coupler
Flexi EDGE BTS using DPTRX(TCC Combining), 4-way RX diversity
WBC
Dual Duplexers
DTRX Units
Example:1 Carrier/cell
TX1
RX1 MainDiv
Main/Div
RX2 MainDiv
TX2
Wideband Combiner(coherent)
Needed for supporting 2nd Duplexer (DC power)
TX3
RX3 MainDiv
Main/Div
RX4 MainDiv
TX4
Phase feedback
Antennas& MHA
54 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Du
ple
xer
LNA
Du
ple
xer
LNA
Du
ple
xer
LNA+Multi-
coupler D
up
lexer
LNA+Multi-
coupler
Du
ple
xer
LNA
Du
ple
xer
LNA
Du
ple
xer
LNA+Multi-
coupler
Du
ple
xer
LNA+Multi-
coupler
Flexi EDGE BTS using DPTRX (TCC Combining),
4-way RX diversity
CWBC
Dual Duplexers
DTRX Units
Example:2 Carrier/cell
CoherentWideband Combiners
TX1
RX1 MainDiv
Main/Div
RX2 MainDiv
TX2
TX3
RX3 MainDiv
Main/Div
RX4 MainDiv
TX4
CWBC
Phase feedback
Phase feedback
Antennas& MHA
55 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Du
ple
xer
LNA
Du
ple
xer
LNA
Du
ple
xer
LNA+Multi-
coupler D
up
lexer
LNA+Multi-
coupler
SRC with IDD & 2-way RX diversity (with MHA)
Dual Duplexer
DualTRX
Example:1 Carrier/cell
Antennasand MHAs
TX1
RX1 MainDiv
Main/Div
RX2 MainDiv
TX2
56 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
Du
ple
xer
LNA
Du
ple
xer
LNA
Du
ple
xer
LNA+Multi-
coupler
Du
ple
xer
LNA+Multi-
coupler
Du
ple
xer
LNA
Du
ple
xer
LNA
Du
ple
xer
LNA+Multi-
coupler D
up
lexer
LNA+Multi-
coupler
SRC with IDD, 4-way RX diversity with MHA
Dual Duplexers
Antennasand MHAs
DualTRXs
Example:2 Carriers /cell
MHA
TX3
RX3 MainDiv
Main/Div
RX4 MainDiv
TX4
TX1
RX1 MainDiv
Main/Div
RX2 MainDiv
TX2
57 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi
Customer Confidential
LNA+ Multi-couple
r
RX
filte
r
Cavities
RX
filte
r
Du
ple
xer
LNA+ Multi-couple
r
1Xpol Antennas
X
X
TX5RX5
MainDiv
RX6 MainDivTX6
DivTX3RX3
MainDiv
RX4 MainDivTX4
DivTX1RX1
MainDiv
RX2 MainDivTX2
Div
Remote Tune Combining with 2-way RX diversity
Example: 6 TRX/cell
Remote TuneCombiner (RTC)
Dual TRXs
With RTC up to 6 Tx signals can be combined into 1 antenna, minimizing the combiner loss
6
6
6