Flexi EDGE BTS Modules•Required Modules

•Optional Modules

Objectives

After the module the participant will be able to:

• Describe in detail the units in Nokia Flexi EDGE BTS, giving brief technical specifications

• Name the Required units, giving descriptions

• Name the Optional units, with descriptions

Nokia Flexi BTS modules

• 3 HU modules• For stand alone and cabinet

installations

• 133 x 447 x 560 [mm], (H x W x D)

• Weight 10 … 20 kg (+ 6 kg for casing and covers)

• 2 HU modules• For stand alone and cabinet

installations

• 89 x 447 x 560 [mm], (H x W x D)

• Weight 10 kg (+ 5 kg for casing and covers)

• 4 HU module (RTC only)• Only for cabinet installations

• 171 x 447 x 415 [mm], (H x W x D)

• Weight 28.5 kg

• In cabinet installations max module depth is 422 mm

447 mm

560 mm

• Module 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 (2 * BTS SW), configuration management,

reference clock and alarms

• BTS integrated transport: Abis transmission

• BB switching: communication between modules via Ethernet switch

• BTS power distribution: single point for power intake and power distribution to all modules

• BTS internal and external synchronization PDU (power distribution unit) 48V intake

Interchangeable Transport module:8xE1, 8xE1/T1 or 2x Flexbus

Site support system, MIBBU alarms (6), Aux equipment Q1, Local Management Port (LMP)

6x Ethernet to DTRX or RTC

PDU (power distribution unit) 6x48V to other modules

Nokia Flexi EDGE System Module (ESMA, 3HU)

Out

1xEAC (External Alarm & Control)12x alarm inputs+6x control outputs

HU = 44.4 mm

In Synchronization

Nokia Flexi EDGE Dual TRX Module (EXxA, 2HU)• Dual TRX module (DTRX) is a 2 carrier TRX unit, used as:

• a stand alone TRX module (2 TRX capacity)• or a Sector module with the Dual duplexer module (2 TRX capacity)• or as Double Power TRX, DPTRX (1 TRX capacity)• or for Intelligent Downlink Diversity, IDD (1 TRX capacity)

• DTRX consists of: • BB part that is common to both TRXs• RF part with 2 independent transmit (TX) chains and 4 receive (RX) chains• 0-2 Wideband combiner (WBC) sub-modules

• RX connections for diversity:• 2-way diversity: 2 RX inputs/DTRX used when both TRXs are in same sector

4 RX inputs/DTRX used when TRXs of the DTRX are in 2 different sectors • 4-way diversity: 4 RX inputs/DTRX used (supported only with SRC or DPTRX)

• DTRX connected to system module via single Gigabit Ethernet interface• Power feed from system module via single cable

4xRX TX 2

0-2xWideband combiners

1xBus

1xDTRX-DDU 1xPowerPhase feedback from WBC (DPTRX)

TX 1

HU = 44.4 mm

Nokia Flexi EDGE Dual Duplexer Module (ERxA, 1HU)• Dual duplexer (DDU) module together with Dual TRX create a logical Sector module

• Min 1 DDU per sector is needed • DDU is attached to DTRX module

• DDU provides • duplex functionality to combine TX and RX signals to same antenna feeder • multicoupling• 2 antenna connections (for 1 or 2 sectors)

• 2 TX inputs and 4+4 RX outputs (4 RX from antenna 1 and 4 RX from antenna 2)

• DDU contains • 2 duplex filter• 2 Low Noise Amplifiers (LNAs) with high/low gain support for RX signal• 2 Bias-Ts with VSWR measurement functionality

• TRX loop is controlled through the DDU • Common TRX loop for all TRXs in same sector• Loop can be performed from either TX to any of 8 RX outputs (only 1 TX and 1 RX can be

simultaneously tested)

HU = 44.4 mm

4xRX 1 TX 2TX 1 RX for external

BTS

RX for external

BTS

Ant 1 Ant 24xRX 2

Flexi EDGE Wideband Combiner

There are three variants:

• EWGA 850/900 MHz Bands

• EWDA 1800 MHz Band

• EWPA 1900 MHz Band

Specifications:

• TXa or TXb to TXout <3.5dBm

• Max power (CW) 48dBm (63 Watts)

”DP” Connector is for use in DPTRX mode.

Connects to the ”DP” connector on DTRX (EXxA)

One or Two can be fitted to a DTRX

TxB

TxA

TCC

TxOut

50Ohms

50Ohms 50

Ohms

PHASE DETECTOR

Block Diagram

TXa TXb

TXoutDP

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 1-2 optional Wideband combiner (WBC) submodules in DTRX module

• For 4-way UL diversity 2 Sector modules are needed per sector

• Both units fit into a 3HU casing

Dual TRX module

Dual duplexer module

3HU

Nokia Flexi EDGE System Extension Module (ESEA, 3HU)• System extension module is required for large BTS configurations

(System module for 1-6 DTRX, System extension module for 7-12 DTRX)• System extension module is always required for RTC configurations

• All TRXs must be connected to same system module for BB hopping• The functionalities of System extension module:

• Power distribution to additional modules (i.e. DTRX 7-12). Power distribution part has six 48V outputs

• Providing 12 Ethernet and synchronization connections to DTRX (DTRX 1-12) and 1 connection to System module

PDU (power distribution unit) 48V intake

12x Ethernet to DTRX

PDU (power distribution unit) 6x48V to other modules

Ethernet to System module

ESMA compared to ESEA

DTRX 1

DTRX 2

DTRX 3

DTRX 4

DTRX 5

DTRX 6

Ethernetswitch

Network processor

1

X2

3

4

5

6

System Module

Power Distribution Sub-Module

System Extension Module

Switch Extension Sub-Module

System Module

DTRX Module 1..6X

Ethernet Switch

6

Power Distribution Sub-Module

XEthernet Switch

System Core Sub-Module

ESM Interface

(GE, RS-485)

DTRX Interface

(GE, RS-485)

FEPD Interface

(CAN)

FEPD Interface

(CAN)

DTRX Module 7..12

6

DTRX Interface

(GE, RS-485)

6

6

ECxA 1-3

ESMA on its own controls TRX’s… ..When ESEA is used, the ESEA controls the TRX’s

- The ESMA now is used only for the ECxA’s (RTC)

Nokia Flexi EDGE RTC Module, cavity combining (ECxA, 4HU)• Optional RTC module for ETSI frequency bands combines max 6 TRX/antenna

• Min 1 RTC per sector is needed• RTC provides:

• Combining of up to 6 TX signals to same antenna feeder• Duplex functionality to combine TX and RX signals to same antenna feeder • Multicoupling• 2 antenna connections (for 1 or 2 sectors)

• 6 TX inputs and 3+3 RX outputs (3 RX from antenna 1 and 3 RX from antenna 2)• RTC module contains:

• 6 tunable cavity combiner• 2 Low Noise Amplifiers (LNAs) for RX signal• 2 duplex filter• 2 Bias-Ts with VSWR measurement functionality

• TRX loop is controlled through the RTC • Loop can be performed from 6 TX to any of 6 RX outputs (only 1 TX and 1 RX can be simultaneously tested)

• DTRX connected to system module via single Gigabit Ethernet interface• Power feed from system module via single cable

HU = 44.4 mm

Bus

Power in

Antenna Ant RX div

6xTX

6xRX

Status RX ext In

RX ext Out

Nokia Flexi EDGE BTS powering: distributed power supply• System module distributes power to

other modules• All modules generate own internal

voltages

• BTS powering may be supplied from:• Nokia Flexi Power AC/DC module

(with or without battery) providing 48VDC input to the power distribution

• Nokia Flexi Power DC/DC module (24/48VDC)

• Integrated long term battery back-up (MIBBU)

• Standard Site support cabinet

48VDC

DTRX module

DTRX module

DTRX module

RTC module

System module

Nokia Flexi Power Module (FPMA, 3HU)

• Power module provides the casing and cable connectors for 4 power sub-modules• input / output terminals, output DC and alarm cables

• Power AC-DC sub-module (FPAA)• 230V AC 48V DC converter• 0…4 FPAA per Power module; 1kW power each• includes AC-filters

• Battery sub-module (FPBA)• gives minute-level back-up when AC mains are down• 0…4 FPBA per Power module (except – how can they be charged?)

+-

48VDC output to BTS

AC input cabling to FPMA

AC feed to FPAA (3pcs)

FPMA with 3 AC/DC sub-modules and 1 Flexi Power Battery

Nokia Flexi Power DC-DC 24V Module (FPDA, 2HU)• Optional DC/DC converts from external 24V DC to internal 48V DC

• 1 DC-DC module gives up to 2kW power

• Useful in swap-out scenarios

48DCV output

24 V DC input

Summary of units

Main modules of Nokia Flexi EDGE BTS

Sector module (3HU)• Logical module comprising

Dual TRX and Dual duplexer modules

System Module (3 HU)• O&M, power distribution,

system bus

Dual duplexer module (optional) (1HU)

• Duplexing & multicoupling, VSWR, Bias-T

• Min 1/ sector; paired with Dual TRX module

Dual TRX module (2HU)• 2 carrier unit• Either stand-alone or part of Sector

module

HU = 44.4 mm

Module casings • 2HU and 3HU casings for module

stacking, guiding airflows and finalizing IP55 protection

Covers• Front and back covers for modules

Transmission sub-modules2. 8 x E1 asymmetrical sub-module 3. 8 x E1/T1 symmetrical sub-

module4. 2 x Nokia Flexbus sub-module

Remote Tune Combiner module (4HU)

• 6:1 combiner, ETSI frequencies• Duplexing & multicoupling,

VSWR, Bias T

Optional modules and sub-modules (1)

Wideband combiner sub-module

• 2:1 combiner• Attached to DTRX; max 2/DTRX

Common modules with Nokia Flexi WCDMA BTS

System extension module (3HU)• For over 12TRX and RTC configurations• Power distribution, system bus

Cabinets: indoor and outdoor

• Optional cabinets where required

HU = 44.4 mm

Optional modules and sub-modules (2)

Common modules with Nokia Flexi WCDMA BTS

Power AC-DC sub-module• AC/DC converter: from 230V AC to

48V DC • Max 4 per Power module; 1kW

power each

Power Battery sub-module• Minute-level batteries• Max 4 per Power module• ??? Ah

Power module• Support frame for 4 power sub-modules:

AC/DC converters and batteries

Power DC-DC module• DC/DC converter: from external 24V DC

to internal 48V DC• Max 2kW supply

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

Site support module• 7HU IP55 space for 3rd party LTE in

NokiaFlexi BTS outdoor cabinets

• Up to ?? kW• Up to ?? Ah

HEX LTELTELTELTE

MIBBU

battFAN batt batt batt