Flexi MultiRadio Preparation Exercise

For internal use1 © Nokia Siemens Networks Presentation / Author / Date

Nokia Siemens NetworksFlexi Multiradio BTS

Preparation exercise


Purpose of the MultiRadio preparation exercise

•This document opens challenges related to Flexi MultiRadio implementation.

– Network planning early participation in detail definition is a must– Because of multiple configuration options, frequency and power

budget limitations up-front training and competence planning is obligatory

– Rotation planning of the competent recourses (Who have gain the experience) is the key success factor

– Close follow up of the future releases and delivery plan is required– CoDe material available here: (Training material is NSN internal use only!)

▪ https://sharenet-ims.inside.nokiasiemensnetworks.com/livelink/livelink?func=ll&objId=421940172&objAction=Browse

▪ https://sharenet-ims.inside.nokiasiemensnetworks.com/livelink/livelink?func=ll&objId=420324586&objAction=Browse

▪ Academy trainings will be available soon


Software Defined Radio

Flexi Multimode WCDMA/LTE

System Module

Flexi Multiradio GSM/EDGE

System Module

Flexi Multiradio 3-Sectors

RF Module

• 1 Gbps throughput

• Multiband support

• Multimode support

• Dedicated and concurrent mode SW defined

• High Capacity (18/36 TRX)

• Multiband support

• Optimized for GSM/EDGE

• Highest integration density level

•GSM/EDGE/WCDMA/HSPA/LTE defined by SW

• Dedicated and concurrent mode

• 60W output per sector with Multi Carrier Power Amplifier (MCPA)

Technologies

3

• Unique integration level in a single RF module

• Support of 4+4+4 GSM and WCDMA/LTE activation


GSM/EDGE

GSM/EDGE

WCDMA/HSPA

I-HSPA

GSM/EDGE

WCDMA/HSPA

I-HSPA

LTE

Multiradio

Flexi Platform

Multiradio Site

Solution

Yesterday Today Tomorrow

WCDMA/HSPA

I-HSPA

LTE

Flexi

Multimode

Flexi

EDGE

One all-purpose Base Station

Modular

Easy to Install

Flexible

Flexi BTS1

Outdoor proof


Flexi MultiRadio Network Implementation points

•Multiradio BTS radiomodule do not have WB-filter but it has SW tunable frequency filter which do not cover whole available frequency band, some challenges in frequency replanning is expected. It’s highly recommended to offer network planning service to the all Flexi MultiRadio cases.

•Configuring of the Flexi MultiRadio BTS is different than legacy GSM BTS. Needed output power/carrier effects to the needed amount of radiomodules at the Site. Already in offering phase of the customer project NINPO co-operation is highly recommended to selecting right configurations and amount of radiomodules to the right sites.

• Commissioning requires to create local sectors and mapping these with sectors created in BSC. With MultiRadio BTS sector ID at the BSC is associated with a local sectors at the site. This requires planning in implementation phase when objects are created at BSC.

•Power consumption of the Flexi MultiRadio BTS needs to be carefully checked and calculated for planned configuration and for upgrade path (WCDMA, LTE) All power saving features are not applicable for MultiRadio, however future releases can bring new features on this area.

•In concurrent mode, site creation process of NetAct requires one object creation under BSC and other/third, under RNC or/and GOMS.


RFM Mechanical construction and external interfaces

External Interfaces– 3 RP3-01 OBSAI 3 Gbps interfaces

– 3 TX/RX Antenna Interfaces (including AISG 2.0 support, Bias-T and VSWR meas)

– 3 RX Antenna Interfaces (including Bias-T)

– 3 Co-siting RX outputs

– 48V DC PWR input

– External Alarm interface

PWR IN Ant 6Rx

Ant 5Tx/Rx

Ant 3Tx/Rx

Ant 1Tx/Rx

Ant 4Rx

Ant 2Rx

Ant 1Rx Out

Ant 3Rx Out

Ant 5Rx Out

EAC OPT 1 OPT 2 OPT 3Fan / RF Off Unit CLASS 1 LASER PRODUCT


RFM functional blocks

• Radio Module is the 3-branch radio transceiver module. The module consists of three individual branches designed to transmit and receive multicarrier signals of multiple radio technologies concurrently.

• The module contains the necessary common functionality like the digital and control circuitry, RP3-1 interface and the needed DC/DC power conversion.

• Each branch contains the transmitter and receiver chains and the front end filters

• The front end filters are software tuneable filters.

• For support of legacy site expansion cases, RFM has separate UL diversity outputs for each branch so that the diversity can be shared between Flexi Multiradio BTS and a co-sited BTS. Diversity sharing requires the co-sited BTS operates in the same frequencies within the frequency band. The co-sited BTS can be at least NSN Ultrasite, Flexi EDGE or BTSplus.

• The fans used for module cooling are replaceable.

8 © Nokia Siemens Networks Presentation / Author / DateFor internal use

Supported configurations(Just some examples)


Radio connection principles and termsDedicated mode (separate 2G and 3G) Radio Sharing (2G+3G using same RFM)

System Module chaining Dedicated and shared chained radios

Available now Available end of 2010

In future


RF configuration for RFM up to 6+6+6 dedicated GSM BTS

X X XESMB

Single RM configurations• Triple Duplexer + RX filter to

enable 2-way diversity schemes (6 antenna ports / module)

Up to 6+6+6 with 1 radio module• Cost optimized for 3 sector

configurations• Up to these power steps:

• 1 TRX * 60W (1 TX ant/sect)• 1..2 TRX * 30W (1 TX ant/sect)• 1..3 TRX * 20W (1 TX ant/sect)• 1..4 TRX * 15W (1 TX ant/sect)• 1..5 TRX * 12W (1 TX ant/sect)• 1..6 TRX * 10W (1 TX ant/sect)


RF configuration with RFM 2..12 TRX cell GSM(one sector shown)

X

RXMC

Flexible RFM configurations• Triple Duplexer + RX filter to enable

2-way diversity schemes (6 antenna ports / module)

• Cost optimized for 3 sector configurations

Up to 6+6+6 with 1 radio module• Capacity extensions with chaining/RX

diversity sharing Up to 12+12+12 with 2 radio modules

• With these power steps:• 2 TRX * 60W (2 ant/sect)• 4 TRX * 30W (2 ant/sect)• 6 TRX * 20W (2 ant/sect)• 8 TRX * 15W (2 ant/sect)• 12 TRX * 10W (2 ant/sect)

Configurations:• Minimum : 1 module (up to 6+6+6)• Maximum : up to 36+36+36 (6

mod/Multi BCF)

LNA

LNA

Du

ple

xer

RX

MCPATX

RX main

RX div

LNA

LNAD

up

lexer

RX

MCPATX

RX main

RX div

RXMC


Power and Frequency budget limitations onFXDA (900 MHz) & FXEA (1800 MHz)

• Power Budget: Maximum total TX output power on one pipe is 60 W which can be shared between the TRX objects allocated on that pipe:

– 1 TRX = 60 W per TRX

– 1..2 TRXs = 30 W per TRX

– ….

– 1..6 TRXs = 10 W per TRX

• Frequency Budget: All carriers (TRXs) allocated on one pipe must be within 20 MHz window:

– Example: 3 TRXs per BTS (20 W per TRX):▪ TRX-1 @ ARFN 1 = 935.2 MHz

▪ TRX-2 @ ARFN 50 = 945.0 MHz

▪ TRX-3 @ AFRN 100 = 955.0 MHz

▪ All channels still within 20 MHz = OK!

• If either Power or Freq budget is exceed, alarm is raised:– 7606 – TRX FAULTY – “TRX object allocation failed in RF Module”



BTS Manager and Commissioning

• New 2G Flexi BTS Site Manager is used with Flexi Multiradio– When EX4.1 is released, it can also be used with Flexi EDGE.

• New 2G BTS Site Mgr looks and feels the same as Flexi EDGE BTS Mgr.

• Flexi Multiradio EDGE commissioning process is similar to Flexi EDGE:– Site Specific Information (same as in Flexi EDGE)

– Hardware Configuration (different to Flexi EDGE)▪ Define used optical ports on ESMx system module

▪ Add RF modules on each optical port (“RF chain”)

▪ Add Local Sector(s)

▪ Define Per TRX power (“W per TRX”) for each Local Sector

▪ Define antennas (TX/RX antenna ports on RF module) for each Local Sector

▪ Define antenna settings (similar to Flexi EDGE)

▪ Define EAC alarm settings on RF module (optional)

▪ Define BBU and other passive units (same as in Flexi EDGE)

Note: RF modules are not autodetected nor shown unless commissioned

– Transmission Parameters (same as in Flexi EDGE)


TRX / BTS mapping to antenna lines

Documents

Flexi MultiRadio Preparation Exercise