2G Flexi BTS Information

8/17/2019 2G Flexi BTS Information

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Company Confidential

1 © 2005 Nokia Flexi EDGE BTS / 26.04.2006/ DDi

2G FLEXI BTS


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Customer Confidential

2 © 2005 Nokia Flexi EDGE BTS 12.04.2006/ DDi

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


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Small but efficient:

1640 subscribers* servedwith 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+2TRXconfiguration

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 anddesign to GSM/EDGE and WCDMA/HSPA BTS sites

• Modules can be installed in Flexi optional cabinets or other19” racks if required


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Modular Flexi BTS Platform

No cabinet is needed for module-based BTS

• Modules are in weather-proof casingswith IP55 protection, no BTS cabinet isneeded

• The casings direct air-flows and allowremoval of the modules from the stack

• Temperature tolerance:-40°C …+50°C; temporarily +55 °C

Modules can be installed in cabinetsor 19” racks

• Modules have no back and front

covers, or casings, when used incabinets

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 oneperson to transport and install BTSwithout using lifting equipment

2TRX sector module


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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 Dualduplexer 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


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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/DCconverters and minute-level batteries

• 3x1kW supply supports max12 TRX (6 DTRX)

Power DC-DC module

• DC/DC converter: from external 24V DC tointernal 48V DC

• Max 2kW supply

Optional modules of Flexi EDGE BTS (1/2)


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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/DCconverters in Flexi outdoorcabinets

Transmission sub-modules

1. E1 AS sub-module

2. E1/T1 S sub-module

3. 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 required

HEX LTELTELTELTE

MIBBU

battFAN batt batt batt


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EX_A EDGE dual TRX moduleT = 800 MHz

G = 900 MHzD = 1800 MHz

P = 1900 MHz

ER_A EDGE RF dual duplexer moduleT = 800 MHz

G= 900 MHz

J = 900 MHz SB-J

H= 900 MHz SB-H

D = 1800 MHz

P= 1900 MHz

ESMA EDGE System ModuleFI_A Flexi platform Interface sub-module

E = E1 AS sub-module

P = E1/T1 S sub-module

F = Flexbus sub-module

EC_A EDGE RTC (Cavity combiner) moduleG = 900 MHz

J = 900 MHz - J

D = 1800 MHz

EW_A EDGE Wide band combiner sub-moduleG = 800/900 MHz

D = 1800 MHz

P = 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


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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)

3HU

Dual TRX module (2 carriers)

Dual duplexer module (optional) 1HU

2HU3HU

* 1 Dual duplexer module is required for each sector, it is not needed for further TRX expansions


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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


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Stack 2+2+2 8+8+8 Indoor48V DC

4+4+4 Outdoorwith Batteries

Sys module

Stack 2TRX

Stack 4+4+4

Sect module Sect module

Sect module

Sect module

Examples of Flexi EDGE configurations

Sys module

Sect module

Sect module

Sect module

Sys module

Sect module

Sect module

Sect module

Sys module

DTRX

DTRX

DTRX

D T R X

D T R 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


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Flexi EDGE BTS Architecture

System

Module

ABIS

DIGITAL RF Ethernet

Synchronization ABIS

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

M h i l A hi d i ll i


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Mechanical Architecture and installation

options

System Modu le

Plinth, in floorinstallation

Roof w ith lock,outdoor

TRX Module


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Wall installation Pole installation Floor installation

Nokia Flexi Base Station Turn 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


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Flexi BTS suites for all traditional sites

1) Rooftop Outdoor2) Rooftop Indoor

5) Rural Outdoor

Mast

6) Rural Outdoor

Tower

4) Sub-Urban

Outdoor

Pole

3) Rooftop Cabinet


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Configuration examples

Examples of Module BTS configurations


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Examples of Module BTS configurationsand comparison to Ultrasite

Stack 2+2+2 ->4+4+4 extension

IndoorEDGE4+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 LTELTE

LTE

LTE

MIBBU

battFAN batt batt batt

GSM/EDGE Modules

WCDMA Modules

Sys module

RF module Sys box

Fl i EDGE BTS


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D u pl ex er LNA

D u

pl ex er

LNA

D u pl ex er

LNA+Multi-

coupler

D u

pl ex er

LNA+Multi-

coupler

Flexi EDGE BTS

Combining By-pass, 2-way RX diversityDual

Duplexer AntennasDualTRX

Example:2 TRX/cell

TX1

RX1 MainDiv

Div

RX2

Main

Div

TX2 2+2+2 (H*W*D):12HU x 19” x 400mm

Antenna connectors

+47 dBm 2.5 dB loss *

+44.5 dBm

ULTRASITE


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ULTRASITE

Combining By-pass, 2-way RX diversity

Example: 2 TRX/cell

TranceiverRF Units

Dual Duplex Unit

ReceiveMulticoupler

Unit

Flexi EDGE BTS


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Flexi EDGE BTS

2-way Wideband Combining, 2-way RX diversity

Example: 4 TRX per CellWidebandCombiners

AntennasDual

Duplexer

DualTRXs

D u pl ex er

LNA

D u pl e

x er

LNA

D u pl ex er

LNA+Multi-

coupler

D u pl e

x er

LNA+Multi-

coupler

WBC

WBCTX1

RX1 MainDiv

Div RX2 Main

Div

TX2

TX3

RX3 MainDiv

Div RX4 Main

Div

TX4

Antenna connectors

This picture is not correctPhase feedback is not needed

(is used only for DPTRXs)

ULTRASITE


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Example: 4 TRX per Cell

TranceiverRF Units

Dual Duplex Unit

ReceiveMulticoupler

Units

WidebandCombiner unit

WidebandCombiner unit

Example: 4+4+4 configuration


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Flexi EDGE BTS4+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

DualDuplexer

DTRX

SystemModule

PSU

Flexi EDGE BTS


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D u pl ex

er LNA

D u pl ex er

LNA

D u pl ex

er

LNA+

Multi-coupler

D u pl ex er

LNA+Multi-

coupler

Flexi EDGE BTS


Example:8 TRX/cell

WBC

WBC

WBC

WBC

Wideband Combiners DualDuplexer

AntennasDualTRXs

WBC

WBC

TX1

RX1 MainDiv

div

RX2 MainDiv

TX2

TX3

RX3 Main

Div div

RX4 MainDiv

TX4

TX5

RX5 MainDiv

div

RX6 MainDiv

TX6

TX7

RX7 MainDiv

div

RX8 MainDiv

TX8

Ultrasite


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Ultrasite


ReceiveMulticouplerUnits

DualDuple

Unit

WidebandCombinerunits

TranceiverRF Units

Flexi EDGE BTS using DPTRX (TCC Combining)


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D u pl ex er LNA

D u pl ex er

LNA

D u pl ex er

LNA+Multi-

coupler

D u pl ex er

LNA+

Multi-coupler

Flexi EDGE BTS using DPTRX (TCC Combining),

2-way RX diversity

WBC

Wideband Combiner(coherent)

DualDuplexer

Antennas

& MHA DualTRX

WBCTX1

RX1 MainDiv

Div

RX2 Main

Div

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

Flexi EDGE BTS example using DPTRXs


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to improve WBC loss compensation

2-way Wideband Combining, 2-way RX diversityExample:4 Carrier/cell

WidebandCombiner

Dual

Duplexer AntennasDualTRXs

TX1

RX1 MainDiv

RX2 MainDiv

TX2

TX3

RX3 MainDiv

RX4 MainDiv

TX4

+47 dBm 2.5 dB loss *

+43.5 dBm

+40.5 dBm

WBC

WBC

D u pl ex er

LNA

D u pl ex er

LNA

LNA+Multi-

coupler

D u pl ex er

D u pl ex er

LNA+Multi-

coupler

Phase

feedback

TX1

RX1 MainDiv

RX2 MainDiv

TX2

TX3

RX3 MainDiv

RX4 MainDiv

TX4

TX7

RX7 MainDiv

RX8 MainDiv

TX8

TX5

RX5 MainDiv

RX6 Main

Div TX6

CWBC

CWBC

WBC

WBC

2.5 dB loss

+43.5 dBm

D u pl ex er

LNA

D u pl ex er

LNA

LNA+Multi-

coupler

D u pl ex er

D u pl ex er

LNA+Multi-

coupler

+47 dBm +49.5 dBm +46 dBm

WidebandCombiners

Dual

Duplexer AntennasDual Power TRXs

3.5 dB loss

3.5 dB loss

CoherentWidebandCombiners

CWBC

CWBC

Nokia Flexi EDGE BTS RF performance is the best in


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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

With MHA Flexi EDGE BTS system sensitivity remains


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With MHA Flexi EDGE BTS system sensitivity remains

constant

UltraSite MHA

compensates

for feeder lossesand makes the Flexi

system sensitivity

constant regardless of

feeder loss

Antenna

feeder loss

Flexi EDGE system sensitivity

1800 2-Way DiversityWithoutMHA

With MHA MHAimprovement

dB dBm dBm dB

0 -115,5 -116,0 0,5

1 -114,5 -116,0 1,5

2 -113,5 -116,0 2,53 -112,5 -116,0 3,5

4 -111,5 -116,0 4,5

5 -110,5 -116,0 5,5

6 -109,5 -116,0 6,5

7 -108,5 -116,0 7,5

8 -107,5 -116,0 8,5

9 -106,5 -116,0 9,5

10 -105,5 -116,0 10,5

C tibilit


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Compatibility

• EP1.0

• S12

• OSS4.1

• EP1.1

• S13

• OSS4.2

• EP2.0• S14

• OSS5.1

EP1 1 F t C did t


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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)

Transport

• TruNet (Circuit Manager)

EP2 0 F t C did t


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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

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


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Backup slides

Flexi EDGE Dual TRX Module (EXxA)


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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 differentsectors

• 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 TX2xWidebandcombiners1xBus

1xDTRX-DDU

1xPowerDPTRX

TX

Flexi EDGE Dual Duplexer Module (ERxA)


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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 commonantenna 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 withVSWR 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 DiversityCombining)

• The LNAs have high and low gain states for supporting high gain MHAs1 HU

8xRX TXTX RX forexternal BTS

RX forexternal BTS

Flexi EDGE Sector Module


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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 Widebandcombiners

3HU

ESMA (Flexi EDGE System Module A) 1/2


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ESMA (Flexi EDGE System Module A) 1/2

O&M, power distribution, system bus

TRSsubmodule

• 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

Flexi EDGE System Module (ESMA) 2/2


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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 (pow er

distr ibution uni t)

1x48V intake

Interchangeable Transport m odule:

8xE1, 8xE1/T1 or 2x Flexbu s

Aux equipment(Q1) 2xSISO, Local Man. Po rt

6x Ethernet

1xEAC (External

Alarm & Control )

12x alarm

inputs+6x control

outputs

PDU (power distr ibu tion uni t)

6x48V to oth er modules

without case

Flexi EDGE System Module


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• 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

with Case

Flexi EDGE RTC Module (Cavity combiner)


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(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 filterfor 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 filterfrom 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

Flexi WCDMA BTS Architecture


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Flexi WCDMA BTS Architecture

System

ModuleIu

DIGITAL RF Ethernet

SynchronizationIu

RF

BB RF

RF

Internal Interfaces


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Ethernet Architecture

• All traffic between System Module andTRX Module is handled over GigabitEthernet.

• This traffic contains:• Hopping BUS, former FBUS traffic

• ABIS, former D1 BUS traffic

• O&M, former D2 BUS traffic

• Hopping BUS traffic flow is purelybetween TRXs. The system moduleprovides only Ethernet switch for thistraffic, but does not otherwise see thisdata.

• ABIS traffic is transferred between ABISand TRXs. The Network Processor inthe System Module takes care of thismessage transfer.

• O&M data transfers go between BTS

O&M SW in the Network Processor andthe TRX O&M SW in the TRX.

BB RF

TRXSystem Module

ABIS

BB RF

TRX

E

t

h

e

r

n

e

t

P

H

Y

E

t

h

e

r

n

e

t

Sw

I

t

c

h

Network

Processor

A

B

I

S

PH

Y

ABIS Traffic (Former D1-Bus)

Hopping Bus Traffic (Former F-Bus)

O&M Traffic (Former D2-Bus)

PHY = Physical Device

Simpler Architecture with Low Unit Count


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Power(Optional)

Simpler Architecture with Low Unit Count

System Module(Transport)

RTC Module

(Optional)

TRX Module(2 Carriers)

PowerAC/DC24VDC

BASE BAND Processing

CONTROL DC Power48 V

BBU

Filtering, Duplexing

GSM/EDGE800/900/1800/1900

E1/T1 Flexbus

Ethernet

WB Duplexing

WidebandCombining

Filtering, Duplexing

A-Bis interfaces

Dual TRX ModuleBl k Di


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Block Diagram

48V

Oscillat

or

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 ADCTX 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 1

out

TX 2out

DRX2

DRX1

MRX2

MRX1

Feedback

for TCC

+48V

TCCADC(s)

TCC

DDU

ADC(s)

I2C

Abbreviations ADC Analog to Digital ConverterDAC Digital to Analog ConverterFB Feed BackFHS Frequency Hopping Synthesizer

PSU Power SupplyPHY Physical DeviceTCC TX Coherent CombiningWBC Wide Band Combiner

External Interfaces


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• 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

Internal Interfaces


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• 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.

Flexi BTS powering


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p g

• All modules operate with 48VDC and have integrated DC/DCconverters 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 SystemModule and in the System Extension Module

• The input for the System Module is nominal – 48VDC with positiveearth

• 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 hasfloating 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 EDGEBTS 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

3rd party cabinet

BB Ext Module

TRX Module

TRX Module

TRX Module

System module

DC in

Nokia Site Support

or

3rd party cabinet

RTC Module


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More configuration examples

Flexi EDGE BTS 4-way Wideband Combining, 2-way RXdiversity


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Example: 8 TRx / Cell

Wideband Combiners DualDuplexer

AntennasDualTRXs

D u pl e

x er LNA

D u pl ex er

LNA

D u pl e

x er

LNA+

Multi-coupler

D u pl ex er

LNA+Multi-

coupler

WBCWBC

WBC

WBCWBC

WBC

TX1

RX1 MainDiv

div

RX2 MainDiv

TX2

TX3

RX3 MainDiv

div

RX4 MainDiv TX4

TX5

RX5 MainDiv

div

RX6 MainDiv

TX6

TX7 RX7 Main

Div div

RX8 MainDiv

TX8

Example: Flexi EDGE BTS 8+8+8 indoor configuration


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Cables:Green: BusLight brown: PwrDark red: DDU-DTRX

Black: Antenna cablesRed small: RxBlue small: TxSmall gray: phase detector

Dual Duplexer

DTRX

DTRX

DTRX

DTRX

System Module

System Extension Module

WBC

WBC

WBC

Flexi EDGE BTS

RTC (Remote Tune Combining) 2-way RX diversity


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D u pl ex er LNA+

Multi-

coupler

Cavities

LNA+Multi-

coupler

RX

f i l t er

RX

f i l t er

TX5

RX5 main div

RX6 main

TX6

TX3

RX3 main div

RX4 main

TX4

RTC (Remote Tune Combining) , 2-way RX diversity

Example:6 TRX/cell

Remote TuneCombiner

AntennasDualTRXs

3

3

3

3TX1

RX1 MainDiv div

RX2 MainDiv

TX2

ULTRASITE Configuration Example

RTC 2 RX di it 6TRX/ t


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RTC , 2-way RX diversity, 6TRX/sector

AntennasTRX RFUnits

ReceiveMulticouplers

Remote TuneCombiner

TX

RX main

div

TX

RX main

div

TX

RX main

div

TX

RX main

div

TX

RX

main

div

splitter

splitter

6

6

6

main

div

Cavities

LNAs

D u pl ex er

Remote Tune Combining, 2-way RX diversity


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D u pl ex er LNA+

Multi-

coupler

Cavities

LNA+Multi-

coupler

RX

f i l t er

RX

f i l t er D

u pl ex er LNA+

Multi-coupler

Cavities

LNA+Multi-

coupler

R

X f i l t er

RX

f i l t er

TX5

RX5 main div

RX6 main

TX6

TX3

RX3 main div

RX4 main

TX4

Example:12 TRX/cell

Remote TuneCombiners

AntennasDualTRXs

3

3

3

3

TX11

RX5 main div

RX6 main

TX6

TX9

RX3 main div

RX4 main

TX4 3

3

3

3

TX1

RX1 MainDiv div

RX2 MainDiv

TX2

TX7

RX7 MainDiv div

RX8 MainDiv TX8

Flexi EDGE BTS using DPTRX

(TCC Combining), 4-way RX diversity


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D u pl ex er LNA

D u p

l ex er

LNA

D u pl ex er

LNA+Multi-

coupler

D u p

l ex er

LNA+Multi-

coupler

D u pl ex er LNA

D u pl ex er

LNA

D u pl ex er

LNA+Multi-

coupler

D u pl ex er

LNA+Multi-coupler

(TCC Combining), 4 way RX diversity

WBC

DualDuplexers

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

Flexi EDGE BTS using DPTRX (TCC Combining),

4-way RX diversity


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D u pl ex er LNA

D u p

l ex er

LNA

D u pl ex er

LNA+Multi-

coupler

D u p

l ex er

LNA+Multi-

coupler

D u pl ex er LNA

D u pl ex er

LNA

D u pl ex er

LNA+Multi-

coupler

D u pl ex er

LNA+Multi-coupler

4 way RX diversity

CWBC

DualDuplexers

DTRX Units


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

SRC with IDD & 2-way RX diversity (with MHA)


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D u pl ex er LNA

D u pl

ex er

LNA

D u pl ex er

LNA+Multi-

coupler

D u pl

ex er

LNA+Multi-

coupler

DualDuplexer

DualTRX


Antennasand MHAs

TX1

RX1 MainDiv

Main/Div

RX2 MainDiv

TX2

SRC with IDD, 4-way RX diversity with MHA


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D u pl ex er LNA

D u pl ex er

LNA

D u pl ex er

LNA+Multi-

coupler

D u pl ex er

LNA+Multi-coupler

D u pl ex er LNA

D u pl ex er

LNA

D u pl ex er

LNA+Multi-

coupler

D u pl ex er

LNA+Multi-

coupler

DualDuplexers

Antennasand MHAs

DualTRXs

Example:2 Carriers /cell

MHA

TX3

RX3 MainDiv

Main/Div

RX4 MainDiv

TX4

TX1

RX1 MainDiv

Main/Div

RX2 MainDiv

TX2

Remote Tune Combining with 2-way RX diversity


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LNA+

Multi-coupler

RX

f i l t er

Cavities

RX

f i l t er

D u pl ex er LNA+

Multi-coupler

1Xpol Antennas

X

X

TX5

RX5 MainDiv

RX6 MainDiv TX6

Div TX3

RX3 MainDiv

RX4 MainDiv TX4

Div TX1

RX1 MainDiv

RX2 MainDiv TX2

Div

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

Date post:	06-Jul-2018
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