flexi multiradio preparation exercise
DESCRIPTION
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For internal use1 © Nokia Siemens Networks Presentation / Author / Date
Nokia Siemens NetworksFlexi Multiradio BTS
Preparation exercise
For internal use2 © Nokia Siemens Networks Presentation / Author / Date
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
For internal use3 © Nokia Siemens Networks Presentation / Author / Date
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
For internal use4 © Nokia Siemens Networks Presentation / Author / Date
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
For internal use5 © Nokia Siemens Networks Presentation / Author / Date
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.
For internal use6 © Nokia Siemens Networks Presentation / Author / Date
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
For internal use7 © Nokia Siemens Networks Presentation / Author / Date
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)
For internal use9 © Nokia Siemens Networks Presentation / Author / Date
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
For internal use10 © Nokia Siemens Networks Presentation / Author / Date
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)
For internal use11 © Nokia Siemens Networks Presentation / Author / Date
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
For internal use12 © Nokia Siemens Networks Presentation / Author / Date
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”
For internal use13 © Nokia Siemens Networks Presentation / Author / Date
For internal use14 © Nokia Siemens Networks Presentation / Author / Date
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)
For internal use15 © Nokia Siemens Networks Presentation / Author / Date
TRX / BTS mapping to antenna lines