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)
560 mm 447 mm
• 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
Nokia Flexi EDGE System Module (ESMA, 3HU) • 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 Synchronization • BTS internal and external synchronization
Out
In
PDU (power distribution unit) 48V intake
PDU (power distribution unit) 6x48V to other modules 6x Ethernet to DTRX or RTC Site support system, MIBBU alarms (6), Aux equipment Q1, Local Management Port (LMP)
1xEAC (External Alarm & Control) 12x alarm inputs+6x control outputs Interchangeable Transport module: 8xE1, 8xE1/T1 or 2x Flexbus
HU = 44.4 mm
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: • 4-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 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 1xDTRX-DDU 1xPower
Phase feedback from WBC (DPTRX) TX 1
4xRX
TX 2
1xBus HU = 44.4 mm 0-2xWideband combiners
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)
Ant 1
TX 1
RX for 4xRX 1 4xRX 2 RX for TX 2 external external BTS BTS
Ant 2 HU = 44.4 mm
Flexi EDGE Wideband Combiner DP
TXout
There are three variants: • EWGA
850/900 MHz Bands
• EWDA
1800 MHz Band
• EWPA
1900 MHz Band
TXa
TXb
Specifications: • TXa or TXb to TXout <3.5dBm • Max power (CW) 48dBm (63 Watts) Tx Out
TxB
”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
50 Ohms
TxA 50 Ohms
TCC
50 Ohms
PHASE DETECTOR
Block Diagram
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 duplexer module
3HU Dual TRX module
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 112) and 1 connection to System module PDU (power distribution unit) 6x48V to other modules 12x Ethernet to DTRX
Ethernet to System module
PDU (power distribution unit) 48V intake
ESMA compared to ESEA 6 6
DTRX 1
1
X Network processor System Module
Ethernet switch
2
Power Distribution Sub-Module
DTRX 2
FEPD Interface (CAN)
X
DTRX 4
5 6
FEPD Interface (CAN)
DTRX 3
3 4
Power Distribution Sub-Module
Ethernet Switch
ESM Interface
System Core Sub-Module
DTRX Interface Switch Extension Sub-Module
System Module
(GE, RS-485)
DTRX Module 1..6
Ethernet Switch
(GE, RS-485)
DTRX 5 DTRX 6
X
DTRX Interface 6
6
(GE, RS-485)
DTRX Module 7..12
System Extension Module
ECxA 1-3
ESMA on its own controls TRX’s…
..When ESEA is used, the ESEA controls the TRX’
- 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 2 2 2
tunable cavity combiner Low Noise Amplifiers (LNAs) for RX signal duplex filter 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 Power in
RX ext Out Bus Status Antenna
6xRX RX ext In Ant RX div HU = 44.4 mm
6xTX
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 backup (MIBBU) • Standard Site support cabinet
DTRX module DTRX module 48VDC
System module DTRX module RTC 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)
System Module (3 HU)
• Logical module comprising Dual TRX and Dual duplexer modules
• O&M, power distribution, system bus
Dual duplexer module (optional) (1HU) • Duplexing & multicoupling, VSWR, BiasT • 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
Optional modules and sub-modules (1) Remote Tune Combiner module (4HU)
Wideband combiner submodule
• 6:1 combiner, ETSI frequencies • Duplexing & multicoupling, VSWR, Bias T
• 2:1 combiner • Attached to DTRX; max 2/DTRX
Transmission sub-modules
System extension module (3HU)
2. 3.
• For over 12TRX and RTC configurations • Power distribution, system bus
4.
8 x E1 asymmetrical sub-module 8 x E1/T1 symmetrical submodule 2 x Nokia Flexbus sub-module
Module casings • 2HU and 3HU casings for module stacking, guiding airflows and finalizing IP55 protection
Cabinets: indoor and outdoor • Optional cabinets where required
Covers • Front and back covers for modules Common modules with Nokia Flexi WCDMA BTS
HU = 44.4 mm
Optional modules and sub-modules (2) Power module • Support frame for 4 power sub-modules: AC/DC converters and batteries
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
Common modules with Nokia Flexi WCDMA BTS
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 Nokia MIBBU Flexi BTS outdoor HEX cabinets FAN batt batt batt batt • Up to ?? kW • Up to ?? Ah LTE LTE LTE LTE
