Flexi MultiRadio Training (PL)

Flexi MultiRadio EDGE BTS Training session @ 27 April 2011 Kimmo Myllymäki NSN / BTS Technical Support / Flexi MultiRadio EDGE BTS (Reference: EX3.1 & EX3.1 MP1.0 BTS SW releases)

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© Nokia Siemens Networks

New Flexi MultiRadio Modules Flexi MultiRadio BTS EDGE System Module (ESMB/ESMC) System Module is 2G specific, but can operate together with 3G/LTE system module in the same system. System module supports max. 36 EDGE carriers. Two separate product variants will be developed:

• ESMB for 18 carriers (TRX IDs 1…18) • ESMC for 36 carriers (TRX IDs 1…36)

Flexi MultiRadio BTS 3*60W Radio Module (FXxA) Five different Radio Module frequency variants will be developed:

• FXCA: 850MHz • FXDA: 900MHz (E-GSM) • FXDJ: 900J-band (P-GSM for CDMA costing) • FXEA: 1800MHz • FXFA: 1900MHz Radio module will be multi standard & multicarrier radio that can support:

 GSM / EDGE / eEDGE up to 6 carriers per pipe  WCDMA up to 4 carriers per pipe  LTE up to 20MHz Company Confidential 2 © Nokia Siemens Networks

Constraints and compatibility • Flexi Platform compatibility: – – – – – – –

Fully compatible with Flexi casings, cabinets and conversion/installation kits Complies to Flexi power modules and NSN power systems for Flexi Co-siting shall be supported with: UltraSite, Flexi System modules and BTSplus BTS Flexi EDGE transmission plugin units can be used within Flexi MR system module. Can be synchronized with the existing Flexi system modules. Compatible with Flexi alarm extension module (FSEB) Radio Module shall be compatible with ▪ ▪ ▪

ESMB or ESMC 2G system Module Rel 2 WCDMA SM Flexi, Ultrasite and BTS plus antenna line

• Supported carrier combinations / antenna: Frequency

900MHz/1800/1900 MHz

850MHz/900MHz J-band

Bandwidth

20MHz

15 MHz (850)/12.5MHz (900J)

2G TRX´s

6+6+6

6+6+6

WCDMA carriers

4+4+4

2+2+2

• Flexible power and

LTE bandwidth

1.4/3/5/10/15/20

1.4/3/5/10

bandwidth allocation via NetAct

Concurrent mode(s) supported by HW

GSM/LTE, GSM/WCDMA, GSM/WCDMA/LTE, WCDMA/LTE 4GSM+10MHz/pipe

GSM/LTE, GSM/WCDMA, GSM/WCDMA/LTE, WCDMA/LTE 4GSM+10MHz/pipe

Output Power/sector

RFM: 60W

RFM: 60W

• Concurrent mode on single RF module

Company Confidential 3 © Nokia Siemens Networks

BTS powering • Floating input voltage 48 VDC nominal – 38…60 VDC at the BTS input. 38...40,5 VDC only for temporary use

• RFM and ESMB/C uses 38…60 VDC floating input voltage. • Power to the RFM can be taken either from PWR ports on

ESMB/C modules or directly from an external power source (e.g. FPMA with a modified cable)


RF Performance (at RF module antenna ports) • RX Sensitivity: ▪ RX Sensitivity values represent the nominal (or typical) performance and can be used to plan a radio network. ▪ RX Sensitivity performance is same as with Flexi EDGE BTS

• TX power: ▪ The nominal total max. output power per pipe is 60 W (+47.8 dBm) and it can be shared equally between the TRXs as follows:

• Min 2G channel spacing on one pipe: ▪ 400 kHz (e.g. on 900 band, this would mean channels 1, 3, 5 and so on) Company Confidential 5 © Nokia Siemens Networks

BCF, BTS, TRX objects on Flexi MR


Flexi EDGE and Multiradio architecture comparison Flexi MR Flexi EDGE RF Module

RF

TRX Module

BB (User Plane) CTRL (Control Plane) O&M

Transport Power


Gigabit Ethernet

+ Sync (Electrical

System Module

Synchronization

Optical

System Module

BTS HW Architecture


Flexi MultiRadio 2G BTS System Module (ESMB/C)

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BTS System Module (ESMB/ESMC) BTS System Module (ESMB/ESMC) is 2G specific. ESMB/ESMC provides same main functions as ESMA (Flexi Edge BTS System Module). Additionally it provides high capacity GSM baseband functionality for up to 36 TRX (ESMC), RP3-01 interfaces and related multiplexing/chaining functions. – – – – – – – – –

Transmission Interfaces and related termination functions. Loop protection and cross connect. Termination of Abis. GSM Baseband functions. BTS control functions. Power input & Power distribution. RP3-01 multiplexing/de-multiplexing and chaining. Test support functions. Casing and cooling.


System Module construction and external interfaces External interfaces: – – – – – –

5 x Power I/Fs. 4 for radios and 1 AUX output (Multibeam) 4 x optical SFPs. OBSAI RP3-01 interface (3Gbps). 48VDC (2 input terminals) Integrated transport interface (based on selected PIU) 1 x FPA, 1 x LMP port with Gb Ethernet debug port, 1 x Q1: (RJ-45) 1 x EAC with 12 in and 6 out and EAC ext. (MDR36), 1 x Sync-Out (MDR14), 1 x Sync-In (MDR26) – FAN connector on the back side. Same fan solution as in RFM (3 fans) – Status-LED, Power LED and Power Push Button – Grounding terminal FPA


OPT OPT

OPT OPT

LMP

Q1

BTS System Module TRS plug-ins (common with Flexi-Edge BTS)

• FIPA (no photo, design similar to FIEA) FIEA>

– 8*E1/T1 symmetrical; RJ48 connector • FIEA – 8*E1 asymmetrical; SMB connector

• FIFA – 2*Flexbus; TNC-type 50 Ω coaxial connector

FIFA>

• FIQA – 1*SFP port, 2* Fast Ethernet; RJ45

connector – 4*E1/T1 symmetrical; RJ48 connector

• FIYA (no photo, design similar to FIQA) FIQA>


– 1*SFP port, 2* Fast Ethernet; RJ45

connector – 4*E1/T1 asymmetrical; SMB connector

Radio (RF) module (FXCA, FXDA, FXDJ, FXEA, FXFA) PWR IN

Ant 6 Rx

Ant 5 Tx/Rx

Ant 5 Rx Out Fan / RF Off

13

Unit


EAC

Ant 4 Rx

Ant 3 Tx/Rx

Ant 3 Rx Out CLASS 1 LASER PRODUCT OPT 1

Ant 2 Rx

Ant 1 Tx/Rx

Ant 1 Rx Out OPT 2

OPT 3

RF Module (FXxA) 3*60W • Optimized for 3 sector Macro BTS use. • 3G/LTE Upgrade with System Module change/addition

• • • •

•

For MC BTS Class 1 the following relaxations apply: – Number of the carriers/branch: Up to 3 carriers – Total output power/branch: Up to 60W (1dB tolerance allowed)

• Flexi mechanics form function  Flexi installation options • Frequency variants for 900MHz full band, 900MHz Jband (CDMA co-siting),1800MHz, 850MHz and 1900MHz


1…6 carriers

1…6 carriers

1…6 carriers

60W

MCPA MCPA MCPA

RFM

• < 25 kg • 3 HU • IP65 • -35 to +55 °C

Triple STuF

•

& multimode SW 18 carrier (3x6) capacity with integrated Duplex-filter & integrated OBSAI RP3-01 interface Maximum 3*60W TOC output power on 20MHz band (12.5MHz for 900MHz J-band and 15 MHz for 850MHz) Dedicated and concurrent mode Flexible power and bandwidth allocation between the radio technologies controlled by operator Compliant to MC BTS (Class 2) 3GPP specification

60W 60W

RFM functional blocks • RFM is the 3-branch (or, 3-pipe) 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 cosited BTS can be at least NSN Ultrasite, Flexi EDGE or BTSplus.

• The fans used for module cooling are replaceable. Company Confidential 15 © Nokia Siemens Networks

Supported frequency bands and used bandwidth Supported frequency bands in Flexi MultiRadio BTS: Band

RX Freq. Range

TX Freq. Range

GSM Channel Numbers

3GPP operating band

Duplex distance

850MHz

806-849 MHz*

851-894MHz*

128-251

V, VI, XVIII and XIX

45 MHz

900MHz

880-915 MHz

925-960 MHz

VIII

45 MHz

900 MHz J-band

890-915 MHz

935-960MHz

975-1023 0-124 1-124

VIII partially

45MHz

1800MHz

1710-1785 MHz

1805-1880 MHz

512-885

III and IX

95 MHz

1900MHz

1850-1910 MHz

1930-1990 MHz

512-810

II

80 MHz

• There is one STuF (SW Tunable Filter) for each branch on the RFM (TX/RX and RX div port). • STuF has specific supported bandwidth on both TX (DL) and RX (UL) bands. • STuF tuning range covers the whole band allowing a tuning window to be allocated anywhere within the band. • RFM simultaneous bandwidth in both UL and DL is limited to: – 900 (FXDA) FB: 20 MHz DL & UL – 900 (FXDJ) J-band: 12.5 MHz DL & UL – 1800 (FXEA): 20 MHz DL & 30 MHz UL (Extended UL) – 850 (FXCA): 15 MHz DL & UL – 1900 (FXFA): 20 MHz DL & UL Company Confidential 16 © Nokia Siemens Networks

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

Note: Pipe numbering from RIGHT to LEFT Company Confidential 17 © Nokia Siemens Networks

Radio connection principles and terms Dedicated mode (separate 2G and 3G)

System Module chaining


Radio Sharing (2G+3G using same RFM)

Dedicated and shared chained radios

Flexi Multiradio RFM support in WCDMA / LTE (concurrent RF WCDMA/GSM or LTE/GSM) Flexi Multiradio EDGE System Module (ESMB or ESMC) Rel. 2.2 RFM

IF: E1/T1

Abis

Iub / S1

IF: PWE IF: Flex Bus

Transport TDM SW

BTS control GSM SW

Baseband GSM SW

WCDMA/LTE SW

Flexi rel. 2 SYS Module

IF: E1/T1/J1

BTS control

Baseband

FDD WCDMA or LTE SW

FDD WCDMA or LTE SW

IF: STM1/OC-3

IF: FE/GbE


Transport ATM/IP SW

GSM/WCDMA/LTE SW

RF configuration for RFM up to 6+6+6 dedicated GSM BTS X ESMB/ C

Single RFM 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) Company Confidential 20 © Nokia Siemens Networks

X

X

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

Flexible RFM configurations • Triple Duplexer + RX filter to enable

RX main

MCPA RXMC


LNA LNA

RX

RX div

RXMC

Duplexer

RX main

MCPA

RX

LNA

RX div

TX

LNA

Duplexer

TX

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 : Up to 6+6+6 with 1 module • Maximum : Up to 36+36+36 with 6 modules and Multi BCF

DAPD and STuF Both FXDA (900) and FXEA (1800) are fullband RF modules. However, the operational RF bandwidth of each pipe is limited by two "blocks“, STuF and DAPD as follows: STuF (SW Tuneable Filter) • STuF bandwidth is 20 MHz @ 900 (FXDA) and 30 MHz @ 1800 (FXEA). • STuF tuning range covers the whole 900 and 1800 band MCPA, containing “DAPD” (Digital Pre-Distorter) • DAPD retains the TX performance in all configurations and over temperatures and has 20 MHz instantaneous bandwidth on both 900 and 1800: • 900 MHz: DAPD is ‘tuned’ to same place as STuF (as both are 20 MHz) • 1800 MHz: DAPD can be ‘tuned’ anywhere within the STuF bandwidth (30 MHz) STuF and DAPD are automatically tuned by BTS SW, based on allocated carriers on each pipe. Company Confidential 22 © Nokia Siemens Networks

Diversity sharing between two pipes @ 900 MHz 45 MHz duplex spacing

X RF Branch 1

RF Branch 2

Tx1/Rx1

diversity for branch 2 via branch 1

STuF: 20 MHz

STuF: 20 MHz

Rx main

Tx main

Rx main

Tx main

Tx2/Rx2


DAPD: 20 MHz Total 20MHz usable for RX diversity

20 MHz usable for IDD TX diversity

Downlink (BTS TX) and Uplink (BTS RX): • TRXs are allocated on pipe(s) by Resource Allocation Algorithm (see later slides). • STuF and DAPD on both branches (pipes) are tuned to the same 20 MHz bandwidth. Rx diversity sharing between the pipes is possible within 20 MHz window. IDD in DL is possible within the same 20 MHz window Note 1: Two pipes can be in two separate RFMs (as shown above) or in one RFM. Note 2: If TRX frequencies on the sector are >20 MHz apart, the two STuF’s would be tuned to different positions so diversity sharing would not work anymore. In this case, 4 feeder lines would be needed for diversity. Company Confidential 23 © Nokia Siemens Networks

Diversity sharing between two pipes @ 1800 MHz 95 MHz duplex spacing

X RF Branch 1

STuF: 30 MHz

STuF: 30 MHz

Tx1/Rx1


DAPD: 20 MHz

Rx main RF Branch 2

Tx2/Rx2

Tx main

Rx main diversity for branch 1 via branch 2

Tx main

DAPD: 20 MHz

Total 30 MHz usable for RX diversity

10 MHz usable for IDD TX diversity

Downlink (BTS TX): • Pipe 1 & 2: A set of TRXs allocated on each pipe and DAPD’s tuned accordingly, in different positions (*) • Only those frequencies which lie within the overlapping 10MHx can be used for IDD. Uplink (BTS RX): • Pipe 1 & 2: Both STuF’s are tuned to the same position so in the Uplink both pipes cover the same 30 MHz window  Rx diversity sharing between the pipes is possible within 30 MHz window. (*) TRX object allocations are done By Resource Allocation Algorithm, see later slides


Power and Frequency budget limitations on FXDA (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 BTS TX (DL) frequencies allocated on one pipe must be within 20 MHz window: – Example: 3 TRXs per BTS: ▪ ▪ ▪ ▪

TRX-1 @ ARFN 1 = 935.2 MHz (BTS TX frequency) TRX-2 @ ARFN 50 = 945.0 MHz TRX-3 @ AFRN 100 = 955.0 MHz  All channels within 20 MHz = OK!

• Extended Uplink on 1800 MHz: If two pipes are used for the same

local sector, then BTS RX (UL) frequencies on that sector can be up to 30 MHz apart with RX (UL) diversity. • If either Power or Freq budget is exceed, alarm is raised: – 7606 – TRX FAULTY – “TRX object allocation failed in RF Module” Company Confidential 25 © Nokia Siemens Networks


Example: TALK vs. Flexi MR TX o/p comparison 2 TRX per BTS (sector) configuration, 900 MHz:

Note: Above comparison is based on typical TRX TX output power values. Small variations can be expected between different HW units so if more exact comparison is needed, accurate TX o/p power measurements (with a calibrated power meter) should be performed pre & post swap. Company Confidential 27 © Nokia Siemens Networks

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) Company Confidential 28 © Nokia Siemens Networks

Commissioning – Module / RF chain configuration


Commissioning – Local Sector Settings


Commissioning – Antenna Settings


TRX / BTS mapping to antenna lines


Resource Allocation Algorithm • Resource allocation algorithm run in BTS O&M SW and allocated TRX objects are setup on RFM. • RFM is the final authority to decide whether a given TRX can be setup or not. • Algorithm inputs: – Sector configuration in BSC: # of TRXs, # of sectors, used ARFCNs, hopping, diversity etc. – Local Sector configuration in SCF – Defined during BTS commissioning RF resource allocation – RFM HW capability

• TRX object allocation order:

always done in two phases: BCCH first, then other TRXs

1. BCCH TRX 2. IDD TRX (Note: IDD not yet supported in EX3.1) 3. TCH TRX • TCH TRXs which have the nearest frequencies to BCCH are allocated to the same pipe (if possible) • Remaining TCH TRXs are allocated on the next pipe(s) associated for that local sector.

• General allocation rules:

• Algorithm attempts to allocate all TRXs (belonging to the same sector) in one pipe but if • • • •

they do not fit (due to freq or power budget or # of carriers), it allocates them in other pipe(s) associated for the same local sector. Pipe selection is started from the RFM which is on the lowest optical port Allocation starts from the highest number pipe associated for that local sector RF hopping TRX is preferred over non IDD and non hopping Allocation goes first to the dedicated RFM, then to shared.


Example 1: 15 W per TRX, 10 TRXs, 3 pipes, IDD


Example 2: 10 W per TRX, 12 TRXs, 4 pipes, IDD


Flexi EDGE / MultiRadio EDGE SW Release naming RG10 (BSS14): EP3 (Flexi EDGE only) • Current main release of Flexi EDGE SW (latest: EP3 MP4.0) ▪

MP = Maintenance Package containing corrections

EX3.1 (Flexi MultiRadio EDGE only) • Known also as ME1 internally EX3.1 MP1.0 (Flexi MultiRadio EDGE only) • Contains corrections and also improved and new features – e.g. RG301555: Higher Average Power per TRX RG20: EX4 (Flexi EDGE only) • For Flexi EDGE only, main new features: OSC + Packet Abis • Part of EX3.1 code included but not compatible with Flexi MultiRadio EDGE. RG25: EX4.1 (Flexi MultiRadio EDGE and Flexi Edge) • Corrections and new features • First common SW for both Flexi EDGE and Flexi MultiRadio EDGE Note: As before, it is always recommended to use the latest compatible BTS SW release to gain the benefits of BTS SW corrections, even if it belongs to newer RG release. • For example EP3 MP4.0 (part of RG10/BSS14) can also be used with S13 (part of BSS13). Company Confidential 36 © Nokia Siemens Networks

Flexi MultiRadio EDGE BTS SW release Flexi MR BTS SW release and release documents are available in NOLS:


Flexi MultiRadio EDGE Product Documents Flexi MR product documents are also available in NOLS:


Flexi MultiRadio Training (PL)

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