06_01_RN30086EN40GLA1_WCDMA Active Antenna System.pdf

Selected site solutions: Active Antenna Systems

RN30086EN40GLA1

©2013 Nokia Solutions and Networks. All rights reserved.

Nokia Solutions and Networks Academy Legal notice Intellectual Property Rights All copyrights and intellectual property rights for Nokia Solutions and Networks training documentation, product documentation and slide presentation material, all of which are forthwith known as Nokia Solutions and Networks training material, are the exclusive property of Nokia Solutions and Networks. Nokia Solutions and Networks owns the rights to copying, modification, translation, adaptation or derivatives including any improvements or developments. Nokia Solutions and Networks has the sole right to copy, distribute, amend, modify, develop, license, sublicense, sell, transfer and assign the Nokia Solutions and Networks training material. Individuals can use the Nokia Solutions and Networks training material for their own personal self-development only, those same individuals cannot subsequently pass on that same Intellectual Property to others without the prior written agreement of Nokia Solutions and Networks. The Nokia Solutions and Networks training material cannot be used outside of an agreed Nokia Solutions and Networks training session for development of groups without the prior written agreement of Nokia Solutions and Networks.

2

RN30086EN40GLA1


Introduction Motivation and Feature Overview

4

RN30086EN40GLA1


NEI Complex Introduction Active Antenna System

RAN 2597 AAS Active Antenna System 2100a/800-900p FAGP

Flexi Multiradio Antenna System allows to create two cells arranged vertically within one sector

RAN2383 AAS Active Antenna System 2100/1800 FAGF RAN2384 AAS Vertical Sectorization

• Active Antenna is a stand-alone fully operational multitransceiver-antenna module.

Cell 2

Cell 1

• It includes full radio functionality (transmitter, receiver, antenna parts and related digital signal processing)

• Active antenna provides also (passive) antenna support for an external source (RRH/FRM)

Inner cell

Outer cell

• Power Amplifier (PA) for each radiator element inside the antenna

Independent TX/RX tilting TX

• Intelligent beam-forming for

Independent carrier tilting

TX

capacity enhancement

• Jumper cable losses eliminated • Less boxes

RX

f1

RAN2579 AAS RX/TX Tilting

5

RN30086EN40GLA1

f2

RX


RAN2569 AAS Tilting per Carrier

Introduction Motivation and Benefits

Motivations

forecasts and the traffic evolution process

• Natural evolution step towards simplified sites (less elements, less visual impact, less weight, less wind load)

• Ability to provide innovative features like separate RX/TX tilting

• Optimize coverage, capacity, site space and costs

Traffic voulume

• WCDMA network capacity enhancements due to traffic Data traffic

Voice traffic

Time

Benefits

• Integrated package of active RF parts and passive antenna elements are capable to provide active antenna features like:

• Vertical sectorization, separate rx/tx tilting, beam shaping, tilting per carrier • Active Antenna Vertical sectorization gives up to 65% capacity gain in DL and up to 135% capacity f1

gain in UL (upper bound achievable in case of high network load) f1 or f2

• Inner and Outer cell can operate on same frequency – doubled resources

• In-built redundancy – multiple active elements inside active antenna • Compact site layout, improved power efficiency, no cable losses • Active Antenna enables advanced SON capabilities 6

RN30086EN40GLA1


Introduction Compact Site Evolution Steps

• Natural evolution step towards simplified sites: less elements, less visual impact, less weight, less wind load • Very compact Flexi Multiradio BTS Site as the last link in the chain

2002

2006

2012+

2010

Active Antenna

Radio RF Sharing

MHA

GSM

Dual Band Antenna

WCDMA

System

GSM

WCDMA

(baseband) GSM /WCDMA Traditional site

Modular site

Dedicated HW per Technology

7

RN30086EN40GLA1

Modular site Single RAN

System Module Sharing Modular site w. active antenna

Software Defined Radio


Technical Details Functionality and Implementation

8

RN30086EN40GLA1


Technical Details Why Active Antenna System is Called Active? What is Integrated Antenna System (IAS)?

Passive Antenna + RRH

Integrated Antenna System

• Standard passive antenna

• Integrated Antenna System

solution

(IAS)

• Single Power Amplifier (PA) -

• Single Power Amplifier (PA) -

external RRH

RRH integrated to the back of passive antenna

• No capacity gains, no beam-

• No capacity gains, no beam-

forming

forming possibilities

• Feeder and jumper losses

• Has the same functionality as with standard RRH connected to antennas with feeders/jumpers RRH

RRH

• Jumper cable losses eliminated • Less boxes • Improved site solution as no

Active Antenna System

TRX

• Active Antenna is a stand-alone

TRX

fully operational multitransceiver-antenna module.

TRX

• It includes full radio functionality

TRX TRX TRX TRX TRX

(transmitter, receiver, antenna parts and related digital signal processing)

• Active antenna provides also (passive) antenna support for an external source (RRH/RFM)

• From IAS perspective, AAS solution is another step forward

Common

separate RRH visible

• Power Amplifier (PA) for each radiator element inside the antenna

• Intelligent beam-forming for capacity enhancement

• Jumper cable losses eliminated • Less boxes 9

RN30086EN40GLA1


Technical details HW Architecture

Active Antenna (AA) Active Element (AE)

Common (CM) Power

AA Power Supply

RF BB & Active Element Control

RP3-01 RP3-01

External IF

AA calibration

AA control

TX

PA

RX

LNA

Antenna (A) Duplex Filter

AA calibration & RF Loop TX

PA

RX

LNA

Duplex Filter

Active Element (AE)


• Active Antenna architecture consists of following sub-modules: • Common (CM) sub-module • Active Element (AE) sub-module (4 pcs) • Antenna (A) sub-module, dual band antenna

TX

PA

RX

LNA

Antenna sub-module Duplex Filter


PA

RX

LNA

Duplex Filter

Active Element sub-module

Active Element (AE)


10

TX

PA

RX

LNA

Duplex Filter Comon sub-module


PA

RX

LNA

RN30086EN40GLA1

Duplex Filter


Technical details Active Antenna System datasheet

Operating bands: • Active 2100 MHz (40MHz bandwidth) • Passive: 1800 MHz (FAGF) and 800-900 MHz (FAGP) Antenna Gain: • 18 dBi (active part) • 17,5 dBi (passive part FAGF) • 16,5 dBi (passive part FAGP) Beam: • Horizontal beam width: 65 °(3dB loss) • Three horizontal sectors only • Maximum three horizontal sectors site layout at the time being • Vertical beam width: • 6...20 °adjustable for active part (3dB loss) • 7 °passive part (3dB loss)

Dimmensions (FAGF): • Height: 1480mm • Width: 240mm • Depth: 210mm • Weight: < 36kg

Active Antenna PA0 PA1

Other details: • Active cooling with long life fans • Operating temperature range: • -40… +55°C (with solar shield) Installation options: • Mast • Pole RET port on Common sub-module has been • Wall Mounting removed according to CN5213

PA2 PA3 PA4 PA5

PA6 PA7

Flexi System Module Rel.3

Details: • 8 Power amplifiers (10W each) with total 80W power • 10 passive elements • Fully Electrical Vertical Tilt: +7°/ -7° • +/-45° Polarization • MIMO Support (2Tx & 2Rx) • Dual Cell support • Power consumption < 400 W @ 48V (100% RF load) • RET interface for passive part (8P connectors at passive part)

11

RN30086EN40GLA1

Common Module

Optional integrated DC power distributor


Technical details

GSM Common RF WCDMA System

GSM GSM RF

• Losses on the feeder cables can be even higher than 3dB, depending on length, connectors and type.

• Possible use of TMA Traditional Site Solution: GSM 1800 (20W)

12

• RF Sharing applied • Separate System Modules • Separate Antenna Systems per technology Flexi Multiradio GSM1800 / WCDMA2100 Site Solution

RN30086EN40GLA1

GSM

GSM RF

WCDMA

Site evolution steps

GSM Common RF WCDMA

• RF Sharing applied • Dual-band antenna system 1800/2100

• Possible feeder-less solution Flexi Multiradio GSM1800 / WCDMA2100 with Dual-band antenna Site Solution


• • • •

Dualband antenna Active part for WCDMA GSM works on passive part Feeder less solution Flexi Multiradio GSM1800passive / WCDMA2100 active Site Solution

Technical details Self Optimizing Network SON

• • • •

Flexi Multiradio Antenna System will support the Self Optimizing Network approach Active elements and Common module inside AAS enables advaced Active Antenna features such as vertical beam width, separate TX/RX tilting and tilting per carrier

Different time of the day brings different traffic distribution within one geographical area Flexi Multiradio Antenna System may adopt to these states via:

• Adjusting electrical tilts and vrtica beam width for both inner and outer cells • Setting separate RX/TX/carrier tilts • Enabling/disabling vertical sectorization • These actions brings several benefits like power saving, capacity and coverage improvements

Adjusting tilt settings in response to change in traffic distribution

Independent cell/carrier/TX&RX tilting

13

RN30086EN40GLA1

Disabling vertical sectorization in the night

SON

Vertical Sectorization


Configuration Management Parameters and Configuration

14

RN30086EN40GLA1


Configuration Management Parameters - Overview

• Flexi Multiradio Antenna System introduces the following set of parameters that can be used to achive desired configuration. Parameters belong to three different Managed Object Classes (MOCs): RMOD Radio Module related parameters

Mechanical tilt angle LCELW

Mechanical tilt angle

Tilting per TX/RX in use Vertical TX tilt angle

WCDMA BTS Local Cell configuration related parameters

Vertical TX tilt angle

Tilting per carrier in use

Vertical RX tilt angle RX

Vertical sector beamwidth

TX f1

BTSSCW

RX

TX f1 or f2

WCDMA BTS radio specific configuration related parameters

Vertical sector beam width

Vertical sectorization in use Tilting per TX/RX in use Tilting per carrier in use

15

RN30086EN40GLA1

Vertical RX tilt angle

Vertical sectorization in use


Configuration Management Parameters - Mechanical tilt angle

Mechanical tilt angle Abbreviated name

tiltAngleMechanical

MOC

RMOD

Data type

Number Description

Parameter group

-

Range and step

0...10 deg, step 0,5 deg

Default value

7 deg

This parameter is used to define mechanical tilt angle. This information is for O&M purposes only (changing the parameter value does not change mechanical tilt angle value of the antenna).

Horizon level

• The Mechanical Tilt is given by

Mechanical tilt can be up to 10 degrees below the horizon level (adjusted with 0.5 degree step) Total downtilt = Mechanical tilt + Electrical Tilt

16

RN30086EN40GLA1

physically tilting down the antenna via antenna brackets


Configuration Management Parameters - Vertical TX tilt angle

Vertical TX tilt angle Abbreviated name

txVerticalTiltAngle

MOC

LCELW

Data type

Number Description

Parameter group

-

Range and step

-7...7 deg, step 0,5 deg

Default value

0 deg

This parameter is used to define TX electrical tilt angle value.

• With AAS it is possible to adjust the tilts separately for uplink and downlink directions

TX

• Simulations show that optimal tilts (giving the best network capacity gains) are distinct for uplink and downlink directions

• Thus, separate RX/TX tilting allows to achive highest gains • If RX/TX Tilting License Key is not present, Vertical RX tilt angle RX

17

RN30086EN40GLA1

equals Vertical TX tilt angle regardless of the rxVerticalTiltAngle parameter value ©2013 Nokia Solutions and Networks. All rights reserved.

Configuration Management Parameters - Vertical RX tilt angle

Vertical RX tilt angle Abbreviated name

rxVerticalTiltAngle

MOC

LCELW

Data type

Number Description

Parameter group

-

Range and step

-7...7 deg, step 0,5 deg

Default value

0 deg

This parameter is used to define RX electrical tilt angle value.

• With AAS it is possible to adjust the tilts separately for uplink and downlink directions

• Simulations show that optimal tilts (giving the best network capacity

TX

gains) are distinct for uplink and downlink directions

• Thus, separate RX/TX tilting allows to achive highest gains • If RX/TX Tilting License Key is not present, Vertical RX tilt angle RX

18

RN30086EN40GLA1

equals Vertical TX tilt angle regardless of the rxVerticalTiltAngle parameter value


Configuration Management Parameters - Vertical sector beamwidth

Vertical sector beamwidth Abbreviated name

sectorVerticalBeamWidth

MOC

LCELW

Data type

Number Description

Parameter group

-

Range and step

6...20 deg, step 0,5 deg

Default value

7 deg

This parameter is used to define sector vertical beam width (3dB loss at antenna pattern).

• This setting can be used to control the size of the 8 deg

14 deg

area that is covered by inner and outer cell.

• It also helps to reduce to the inter-cell interference • It is also a Self Optimizing Network (SON) ready functionality – network load can be wisely and fully automatically split between inner and outer cells 19

RN30086EN40GLA1


Configuration Management Parameters - Vertical sectorization in use

Vertical sectorization in use Abbreviated name

verticalSectorizationInUse

MOC

BTSSCW

Data type

Boolean Description

Parameter group

-

Range and step

True, False

Default value

False

The parameter is used to enable Vertical Sectorization for Active Antenna System.

Two cells per one frequency created from one Flexi Multiradio Antenna System.

f1

20

RN30086EN40GLA1

f1

When both parameters verticalSectorizationInUse and tiltingPerCarrierInUse parameters are set to True value, it is possible to define separate tilts for these two cells and achieve vertically sectorizated site layout.


Configuration Management Parameters - Tilting per TX/RX in use

Tilting per TX/RX in use Abbreviated name

tiltingPerTxRxInUse

MOC

BTSSCW

Data type

Boolean Description

Parameter group

-

Range and step

True, False

Default value

False

The parameter is used to enable Tilting per TX/RX for Active Antenna System.

• This parameter enables separate tilt setting for RX and TX directions • If tiltingPerTxRxInUse is set to True value, Active Antenna System will

TX

set separate electrical tilt values for uplink and downlink

• If tiltingPerTxRxInUse is set to False value, Vertical RX tilt angle RX

21

RN30086EN40GLA1

equals Vertical TX tilt angle regardless of the rxVerticalTiltAngle parameter value


Configuration Management Parameters - Tilting per carrier in use

Tilting per carrier in use Abbreviated name

tiltingPerCarrierInUse

MOC

BTSSCW

Data type

Boolean Description

Parameter group

-

Range and step

True, False

Default value

False

The parameter is used to enable Tilting per Carrier (local cell) for Active Antenna System.

• Tilting per carrier replaces the RET needed with passive antenna tiltingPerCarrierInUse TRUE

tiltingPerCarrierInUse FALSE

• It allows to set electrical tilt for one or more beams coming from the Flexi Multiradio Antenna System

• If the parameter tiltingPerCarrierInUse is set to False value, the default value of electrical tilt (0 deg) is set for all beams coming from the AAS – mechanical tilt applies then only 22

RN30086EN40GLA1


Configuration Management TX/RX resource allocation

4 cells (2 x Dual Cell) 10W (1Tx+1Rx)

3 sector (horizontal) case 3 AAS needed

Window shows the exact cell/site layout that can be achieved via the particular RX/TX resource allocation

Dual Cell MIMO Dual Cell MIMO

Inner cell

23

• Next slides describe the TX and RX resource allocation at Flexi Multiradio Antenna System

Cell 1 Cell 2 Cell 3 Cell 3

Outer cell

Figure describing the TX/RX resource allocation on each Active Element belonging to Active Antenna System. Maximum output power per Active Element is 20W.

Active Element 1 (20W)




Tx1.1.1 Tx1.1.2 Tx1.1.3 Tx1.1.4

Tx2.1.1 Tx2.1.2 Tx2.1.3 Tx2.1.4

Tx3.1.1 Tx3.1.2 Tx3.1.3 Tx3.1.4

Tx4.1.1 Tx4.1.2 Tx4.1.3 Tx4.1.4

Tx polarization 1

Tx1.1.1 Tx1.1.2 Tx1.2.3 Tx1.2.4

Tx2.1.1 Tx2.1.2 Tx2.2.3 Tx2.2.4

Tx3.1.1 Tx3.1.2 Tx3.2.3 Tx3.2.4

Tx4.1.1 Tx4.1.2 Tx4.2.3 Tx4.2.4

Tx polarization 2

Rx1.1.1 Rx1.1.2 Rx1.1.3 Rx1.1.4

Rx2.1.1 Rx2.1.2 Rx2.1.3 Rx2.1.4

Rx3.1.1 Rx3.1.2 Rx3.1.3 Rx3.1.4

Rx4.1.1 Rx4.1.2 Rx4.1.3 Rx4.1.4

Rx polarization 1

Rx1.1.1 Rx1.1.2 Rx1.2.3 Rx1.2.4

Rx2.1.1 Rx2.1.2 Rx2.2.3 Rx2.2.4

Rx3.1.1 Rx3.1.2 Rx3.2.3 Rx3.2.4

Rx4.1.1 Rx4.1.2 Rx4.2.3 Rx4.2.4

Rx polarization 2

RN30086EN40GLA1




1 cell 20W (1Tx+2Rx)

• TX/RX resource allocation is done during the BTS Commisioning Process

• Each Active Element maximum total output power is 20W (2x10W for example maximum per polarization is 10W).

• The following format is used in the figure below: • Tx.[ActiElementNumber].[PolarizationNumber].[CellNumber] • Rx.[ActiElementNumber].[PolarizationNumber].[CellNumber]

Cell 1 2way RX div

Active Element 1 (5W) Tx1.1.1

5W Tx1.2.1

24

Active Element 2 (5W) 5W

Tx2.1.1 10W

Tx2.2.1


10W

5W Tx3.2.1


10W

5W Tx4.2.1

Tx polarization 1 10W

Rx1.1.1

Rx2.1.1

Rx3.1.1

Rx4.1.1

Rx polarization 1

Rx1.2.1

Rx2.2.1

Rx3.2.1

Rx4.2.1

Rx polarization 2

RN30086EN40GLA1




1 cell 40W+ 40W MIMO (2Tx+2Rx)




Cell 1 MIMO


25




Tx1.1.1

10W

Tx2.1.1

10W

Tx3.1.1

10W

Tx4.1.1

10W

Tx polarization 1

Tx1.2.1

10W

Tx2.2.1

10W

Tx3.2.1

10W

Tx4.2.1

10W

Tx polarization 2

Rx1.1.1

Rx2.1.1

Rx3.1.1

Rx4.1.1

Rx polarization 1

Rx1.2.1

Rx2.2.1

Rx3.2.1

Rx4.2.1

Rx polarization 2

RN30086EN40GLA1




2 cells 20W (1Tx+2Rx)



• The following format is used in the figure below: Cell 2

• Tx.[ActiElementNumber].[PolarizationNumber].[CellNumber] • Rx.[ActiElementNumber].[PolarizationNumber].[CellNumber]

Cell 1

2way RX div 2way RX div

Inner cell

Outer cell


26




Tx1.1.1

5W

Tx2.1.1

5W

Tx3.1.1

5W

Tx4.1.1

5W

Tx polarization 1

Tx1.2.2

5W

Tx2.2.2

5W

Tx3.2.2

5W

Tx4.2.2

5W

Tx polarization 2

Rx1.1.1

Rx1.1.2

Rx2.1.1

Rx2.1.2

Rx3.1.1

Rx3.1.2

Rx4.1.1

Rx4.1.2

Rx polarization 1

Rx1.2.1

Rx1.2.2

Rx2.2.1

Rx2.2.2

Rx3.2.1

Rx3.2.2

Rx4.2.1

Rx4.2.2

Rx polarization 2

RN30086EN40GLA1








Dual Cell 2way RX div

Dual Cell 2way RX div

Inner cell

Outer cell


27





Tx1.1.1 Tx1.1.2

5W

Tx2.1.1 Tx2.1.2 5W

Tx3.1.1 Tx3.1.2

5W

Tx4.1.1 Tx4.1.2

5W

Tx polarization 1

Tx1.2.3 Tx1.2.4

5W

Tx2.2.3 Tx2.2.4 5W

Tx3.2.3 Tx3.2.4

5W

Tx4.2.3 Tx4.2.4

5W

Tx polarization 2

Rx1.1.1 Rx1.1.2 Rx1.1.3 Rx1.1.4

Rx2.1.1 Rx2.1.2 Rx2.1.3 Rx2.1.4

Rx3.1.1 Rx3.1.2 Rx3.1.3 Rx3.1.4

Rx4.1.1 Rx4.1.2 Rx4.1.3 Rx4.1.4

Rx polarization 1

Rx1.2.1 Rx1.2.2 Rx1.2.3 Rx1.2.4

Rx2.2.1 Rx2.2.2 Rx2.2.3 Rx2.2.4

Rx3.2.1 Rx3.2.2 Rx3.2.3 Rx3.2.4

Rx4.2.1 Rx4.2.2 Rx4.2.3 Rx4.2.4

Rx polarization 2

RN30086EN40GLA1








Dual Cell MIMO

Dual Cell MIMO

Inner cell

28


Outer cell





Tx1.1.1 Tx1.1.2 Tx1.1.3 Tx1.1.4

Tx2.1.1 Tx2.1.2 Tx2.1.3 Tx2.1.4

Tx3.1.1 Tx3.1.2 Tx3.1.3 Tx3.1.4

Tx4.1.1 Tx4.1.2 Tx4.1.3 Tx4.1.4

Tx polarization 1

Tx1.2.1 Tx1.2.2 Tx1.2.3 Tx1.2.4

Tx2.2.1 Tx2.2.2 Tx2.2.3 Tx2.2.4

Tx3.2.1 Tx3.2.2 Tx3.2.3 Tx3.2.4

Tx4.2.1 Tx4.2.2 Tx4.2.3 Tx4.2.4

Tx polarization 2

Rx1.1.1 Rx1.1.2 Rx1.1.3 Rx1.1.4

Rx2.1.1 Rx2.1.2 Rx2.1.3 Rx2.1.4

Rx3.1.1 Rx3.1.2 Rx3.1.3 Rx3.1.4

Rx4.1.1 Rx4.1.2 Rx4.1.3 Rx4.1.4

Rx polarization 1

Rx1.2.1 Rx1.2.2 Rx1.2.3 Rx1.2.4

Rx2.2.1 Rx2.2.2 Rx2.2.3 Rx2.2.4

Rx3.2.1 Rx3.2.2 Rx3.2.3 Rx3.2.4

Rx4.2.1 Rx4.2.2 Rx4.2.3 Rx4.2.4

Rx polarization 2

RN30086EN40GLA1


Deployment Aspects Licenses Keys, Activation Processes and Example Confugurations

29

RN30086EN40GLA1


Deployment Aspects Licenses Keys

• Three Active Antenna System features are under BTS License Key control: • RAN2384 AAS Vertical Sectorization • RAN2569 AAS Tilting per Carrier • RAN2579 AAS RX/TX Tilting

License Name: AAS Vertical Sectorization

License Name: AAS Tilting per Carrier

License Name: AAS RX/TX Tilting

License Type:

ON/OFF

License Type:

ON/OFF

License Type:

ON/OFF

License Code:

0000003719

License Code:

0000003720

License Code:

0000003721

Description:

It is possible to split one frequency to two vertical sectors. One license is required per AAS.

Description:

It is possible to configure tilt angle for each cell separately, but it is not possible to adjust angle at TX/RX level. One license is required per AAS.

Description:

It is possible to adjust tilt angle at TX/RX level. One license is required per AAS.

• BTSOM and BTS Site Manager allows commissioning of the AAS regardless of AAS licenses presence • BTSOM enforces AAS licenses during the BTS runtime. If there is no valid license then an alarm is raised. • Note that standard licenses related to RFs are needed as well (for example Power licenses and Multicarrier license in case of more than one carrier on site; Branch activation does not require additional license)

30

RN30086EN40GLA1


Deployment Aspects Example configurations

• This slide presents AAS License Key combinations with typical order to use them

No license keys

AAS Tilting per Carrier

AAS Vertical Sectorization AAS Tilting per Carrier AAS RX/TX Tilting

AAS Vertical Sectorization AAS Tilting per Carrier

TX RX TX

f1

F1 or f2

RX

f1

TX f1 or f2

RX

• 0-10 deg mechanical tilt • 0 deg Electrical Tilt • One cell per frequency

• 0-10 deg mechanical tilt • +/-7 deg Electrical tilt (Rx Tilt is the same as Tx Tilt). Tilting per carrier replaces the RET needed with passive antenna.

• One cell per frequency

• 0-10 deg mechanical tilt • +/-7 deg Electrical tilt (Rx Tilt is the same as Tx Tilt). Tilting per carrier replaces the RET needed with passive antenna.

• Cell specific tilt values (in case more than one cell configuration). This is not possible with passive antenna RET.

• Two cells per frequency

31

RN30086EN40GLA1


• 0-10 deg mechanical tilt • +/-7 deg Electrical tilt (Rx Tilt and Tx Tilt can be different). Tilting per carrier replaces the RET needed with passive antenna.

• Cell specific tilt values (in case more than one cell configuration). This is not possible with passive antenna RET

• Two cells per frequency

Benefits and Gains System-level simulations both in static and dynamic simulators

32

RN30086EN40GLA1


Benefits and Gains System-level simulations

Simulation assumptions

• Simulations performed in static and dynamic (NSN product aligned) system-level simulators

• Environment: Live network scenario – investigated area is the part of the city that has more than one million citizens

• Project area: North – South 4870m; West – East 5250m • Network: 55 sites,160 cells (320 cells in scenarios where Vertical Sectorization has been applied)

• Results gathered from 10 central sites (indicated in black)

• Propagation models: Dominant Path Model and 2D Propagation Model

• • • • • •

33

Traffic Model: Full Buffer; FTP (dynamic simulator) Link Level Curve: 256 – 11500 kbps Simulated services: HSDPA and HSUPA (dynamic simulator) Electrical tilt range <-5;+5> Fixed vertical sector beamwidth (7 degrees) User distribution: In static simulator users were distributed according to some user distribution CDF. In dynamic simulator fixed number of users were generated in each sector. During the simulation time period users walk along the project area via randomly selected routes.

RN30086EN40GLA1

Site within mask

Interferer site


Benefits and Gains System-level simulations

• Simulation Methodology • On all sites, passive antennas have been replaced with AAS • Electrical and Mechanical Tilt optimization process has been performed in 3x1 network layout

• • • •

The performance of the 3x1 network has been recorded On each site, an inner cell has been introduced f1

The performance of the 3x2 network has been recorded

f1

f1

The AAS capacity gain has been calculated according to the following formula:

AAS _ Gain =

3x2 _ Performance - 3x1 _ Performance *100% 3x1 _ Performance

The reference point for tilt offsets in 3x2 scenarios is an optimized tilt in 3x1 scenario. Scenarios

Network Layout

Tilt offset [inner/outer]

Total TX Power (inner/outer)

CPICH Power [inner/outer]

Control and Common Channels

3x1 AAS Antennas

-

43 dBm

33 dBm

33 dBm

+10 +0

40 dBm / 43 dBm

30dBm / Optimized (30-35 dBm)


+8 +0

40 dBm / 43 dBm



+6 +0

40 dBm / 43 dBm



+2 -2

40 dBm / 43 dBm



3x2 based on AAS Antennas (Pilot Power Optimized)

34

RN30086EN40GLA1


Benefits and Gains HSDPA System-level simulations

HSDPA Results:

• The best performance (AAS Gain) is observed for „+10 +0” tilt offsets • From sector and site point of view vertical sectorization brings clear benefit

Simulator

Network Layout

2D Pathloss

3x1 AAS Antennas 3x2 AAS Antennas +10 +0 Static

3x2 AAS Antennas +8 +0 3x2 AAS Antennas +6 +0

3x2 AAS Antennas +2 -2 3x1 AAS Antennas

3x2 AAS Antennas +10 +0 Dynamic

3x2 AAS Antennas +8 +0 3x2 AAS Antennas +6 +0 3x2 AAS Antennas +2 -2

Mean Cell TP [kbps]

Gain

2062 1805 1778 1775 1609 3254 2566 2479 2257 2099

75% 72% 72% 56% 58% 52% 39% 29%

DPM=Dominant Path Model 35

RN30086EN40GLA1


Benefits and Gains HSDPA System-level simulations

•

AAS Vertical Sectorization solution brings benefits in current and future network load (static simulator analysis) Without Vertical Sectorization

Now (650 UEs per mask) Future (1100 UEs per mask)

With Vertical Sectorization

Sector TP [kbps]

UE TP [kbps]

Sector TP [kbps]

UE TP [kbps]

2487

128,6

4038

206,3

2481

73,3

4204

AAS VS improves Mean UE throughput when constant number of UEs is considered

AAS VS allows to keep Mean UE throughput at the same level in the future (with higher number of UEs)

123,0

36

Cell Throughput

1200.00 With AAS Vertical Sectorization Without AAS Vertical Sectorization

1000.00

800.00 600.00 400.00 200.00 .00 80

160

480

640 800 # of UEs

RN30086EN40GLA1

1120

1600

3199

Mean UE Throughput [kbps]

Mean UE Throughput [kbps]

UE Throughput 6000

With AAS Vertical Sectorization Without AAS Vertical Sectorization

5000

4000 3000 2000 1000 0 80

160

480

640 800 # of UEs


1120

1600

3199

Benefits and Gains HSUPA System-level simulations

HSUPA Results:

• • • •

DPM Pathloss

2D Pathloss

Simulator

37

Dynamic

Dynamic

Very good gain (up to 135%) in mean value of site throughput is observed With AAS VS users are served by 2 cells in one sector – it gives additional space for sum of received signal on BTS Average UE throughput is significantly increased (even twice) after AAS Vertical Sectorization deployment Even if one user is served by inner cell then other users have room (in terms of free noise rise level) for increasing UL Tx Power

Mean Cell TP [kbps]

Gain

3x1 AAS Antennas

673.0

-

3x2 AAS Antennas +10 +0

742.0

121%


757.0

125%


745.0

121%

3x2 AAS Antennas +2 -2

722.0

115%

3x1 AAS Antennas

699.0

-


792.0

127%


809.0

131%


823.0

135%


822.0

135%

Network Layout

RN30086EN40GLA1


Benefits and Gains Drive test results

38

RN30086EN40GLA1


Benefits and Gains HSUPA System-level simulations

HSUPA Results:

• • • •

DPM Pathloss

2D Pathloss

Simulator

39

Dynamic

Dynamic

Very good gain (up to 135%) in mean value of site throughput is observed With AAS VS users are served by 2 cells in one sector – it gives additional space for sum of received signal on BTS Average UE throughput is significantly increased (even twice) after AAS Vertical Sectorization deployment Even if one user is served by inner cell then other users have room (in terms of free noise rise level) for increasing UL Tx Power

Mean Cell TP [kbps]

Gain

3x1 AAS Antennas

673.0

-


742.0

121%


757.0

125%


745.0

121%


722.0

115%

3x1 AAS Antennas

699.0

-


792.0

127%


809.0

131%


823.0

135%


822.0

135%

Network Layout

RN30086EN40GLA1


Trial case: Improvement of office campus coverage and capacity Challenge: high traffic from campus, lack of capacity at cell edge area Target: Create high capacity with new AAS cell and improved coverage at campus area Case: Two cell = vertical sectorization

1.8 km

Case: One cell

Route ~7 km to 12 km 40

RN30086EN40GLA1


Site introduction

Mechanical down tilt = 4°

AAS site: • 1*FSME • 1*power

Seamless integration on existing Flexi BTS site. Fully outdoor Active antenna • Two sectors vertical sectorization • Electrical tilting • 8*10W • MIMO

6-sector site

41

RN30086EN40GLA1

Effortless and fast implementation, without separate radios and antenna line items


Tilt and coverage area example 4° mechanical down tilt (-4°)

Cell 1 (outer) = 3° down tilt (-3°) AAS

Cell 2 (inner) = 8.5° down tilt (-8.5°)

Cell 2 800 meters

Case example (-3°/-8.5°): Cell 1: tilt -3° Cell 2: tilt -8.5° Inner and outer cell tilt angle separation

Cell 1

5.5° Cell 2

Cell 1

Bringing doubled resources in “old” sector area with using cell specific tilting 42

RN30086EN40GLA1

AAS tilt control is one key development items: • NetAct – Manual control • Optimizer/SON – semi or full automated ©2013 Nokia Solutions and Networks. All rights reserved.

Dominance – Driver for good performance, powered by electrical tilting and SON Case 4: Cell 1: tilt -3° Cell 2: tilt -8.5°

Case 1: Cell 1: tilt -2° Cell 2: tilt -7°

Trial experienced different setting to create good serving cell dominance area. AAS provides accurate and efficient dominance control with integrated electrical tilting

43

RN30086EN40GLA1

Cell 1

Cell 1

5°

5.5°

Cell 2

Cell 2

RSCP = -86.44 dBm

RSCP = -83.48 dBm

HSDPA thr. = 2.28 Mbps

HSDPA thr. = 3.43 Mbps

Cell 2 Cell 1


Cell 2 Cell 1

Dominance and cell separation – Important aspect to create clear dominances but also overlap has high benefits in WCDMA

Overlap area with less than 3 dB separation

44

RN30086EN40GLA1


Good dominance with good inner and outer cell signal strength Average throughput (Mbps) leads to high Throughput per scrambling code (510 inner, 511 outer)

4 Mbps Case 1 (-2°/-7°) = 2.28 Mbps Case 2 (-2°/-9°) = 2.52 Mbps Case 3 (-1.5°/-8.5°) = 2.61 Mbps Case 4 (-3°/-8.5°) = 3.43 Mbps Case 4

Case 2 Case 1

Case 1

45

RN30086EN40GLA1

Case 2

Case 3


Case 4

Case 3

Coverage gain – AAS brings clear coverage increase in uplink and downlink Case 1: Vertical sectorization (-3°/-8.5°)

Case 2: Single sector (-3°/not used)

Cell 1

Cell 1

5.5°

n/a

Cell 2

n/a

Case 1: RSCP= -83.5 dBm Case 2: RSCP= -87.5 dBm

HSDPA measurements result: 4 dB higher RSCP level for vertical sectorization Case 1: UE TX power = -0.35 dBm Case 2: UE TX power = 12.04 dBm

46

RN30086EN40GLA1

HSDPA measurements result: ~6-9 dB better UE TX power for Vertical sectorization* ©2013 Nokia Solutions and Networks. All rights reserved.

Coverage gain – AAS brings clear coverage increase in uplink and downlink, cont. − In this measurement case there is no RX diversity used, also in single sector − − − −

47

case uplink doesn’t have softer HO (thus -3dB from gain) Additional gains for vertical sectorization are related on two main beams instead of one (e.g. tolerance against shadowing) Tilting and overlap has high impact on TX power 3dB can be taken off from vertical sectorization as single cell does not have softer HO Note: RX diversity is turned off for this test, but then we could also see benefit from AAS so called semi-4way RX diversity

RN30086EN40GLA1


Capacity gain – Loading of inner cell releafs capacity for outer cell users. Full sector users experience

Mobile user experience Cell 1: tilt -2° Cell 2: tilt -8.5° Cell 1

6.5° Cell 2

Average drive test DL throughput (Mbps): Vertical Sectorization = 1.32 Mbps Single cell = 1.09 Mbps Vertical gain for DT user = ~21%

Drive test user experiencing in average +20% higher throughput 48

RN30086EN40GLA1

Average DL sector throughput (Mbps): - Vertical sectorization = 3.77 Mbps - Single cell = 2.23 Mbps Vertical gain for full sector = ~70%

Full sector throughput increased by +70%


Doubled resources – Driving ultimate end-user experience also at the cell edge. Focus of Active Antenna is to double resources Drive test user throughput for users in thepeaks existing sector. Creation of new even +200% cell to serve campus and at the same time enabling dedicated resources for cell edge users. • Case AAS, in the inner cell area, resources are shared with three users but when car is located at outer cell then sharing is between two users. • Case single cell three user sharing takes place for whole area

Dual Cell (vertical sectorization)

Single Cell

Lack of capacity in Single cell case

Dedicated resouces at cell edge with AAS

Average drive test user +30% higher throughput for whole drive route Outer cell bringing new resources to cell edge 49

RN30086EN40GLA1

Throughput >2.5 Mbps ©2013 Nokia Solutions and Networks. All rights reserved.

Backup

50

RN30086EN40GLA1


Introduction

Table of Contents

Main Menu

General Release Information

Release Information for:

Release Information for: RAN2383 AAS Active Antenna System 2100act/1800pas, FAGF RAN2597 AAS Active Antenna System 2100act/800-900pas, FAGP

RAN2384 AAS Vertical Sectorization RAN2569 AAS Tilting per Carrier RAN2579 AAS RX/TX Tilting

WCDMA Release

WCDMA Release

I-HSPA System

I-HSPA Rel.5

RU40

I-HSPA System

I-HSPA Rel.5

RNC Release

support not required

RNC Release


mcRNC Release


mcRNC Release


BTS (Flexi)

BTS HW (one of the following HW elements is required)

NetAct BSW/ASW License control

51

RU40

WBTS 8.0 RAN2382 Flexi System Module FSMC RAN1016 Flexi System Module FSMD RAN1848 Flexi System Module FSME RAN2262 Flexi Multiradio System Modules (FSMF)

support not required BSW -

RN30086EN40GLA1

BTS (Flexi) BTS HW (one of the following HW elements is required)

WBTS 8.0 RAN2382 Flexi System Module FSMC RAN1016 Flexi System Module FSMD RAN1848 Flexi System Module FSME RAN2262 Flexi Multiradio System Modules (FSMF)

NetAct BSW/ASW License Control


OSS5.4 ASW BTS License Key

Introduction

Table of Contents

Main Menu

With and Without RAN2384 AAS Vertical Sectorization and RAN2569 AAS Tilting per Carrier

RAN2384

RAN2569

RAN2384

RAN2569

Not activated

Not activated

Activated

Activated

• Without these features, it is not possible to create two separate cells arranged vertically and using the same frequency

• The operator cannot get capacity gain coming from vertical sectorization

• All users located at antenna azimuth are served by one cell • Cell resources are shared among all users Only one cell on particular frequency can be created at antenna azimuth

f1

52

RN30086EN40GLA1

• With these features, it is possible to form two separate beams from one active antenna (one frequency is divided into two vertically arranged cells)

• Resources available for the users are doubled • Users located at antenna azimuth are served by inner or outer cell. Cell resources are shared among lower number of users

• Capacity gain up to 65% in DL and up to 135% in UL Two cell on one frequency created by the Flexi Multiradio Antenna System

f1


f1 or f2

Introduction

Table of Contents

Main Menu

With and without RAN2579 AAS RX/TX Tilting

RAN2579 Not activated

• Without this feature, it is not possible to set separate tilts for uplink and downlink transmission

TX

• The Active Antenna System sets exactly the same electrical tilt value for RX and TX directions

• Coverage and capacity optimization possibilities are limited RX

RAN2579 Activated

• With RAN2579, it is possible to adjust the tilts separately for uplink and downlink directions

Separate RX/TX Tilting deployed together with Vertical Sectorization and Tilting per Carrier

TX

• Simulations show that optimal tilts (giving the best network capacity gains) are distinct for uplink and downlink directions

• Thus, separate RX/TX tilting allows to achive highest gains • Wide range of optimization possibilities • Togehter with Vertical Sectorization and Tilting per Carrier, Separate RX/TX Tilting brings ultimate solution to WCDMA networks based on AAS

53

RN30086EN40GLA1

TX

RX


TX

RX

RX

HW details

54

RN30086EN40GLA1


Technical details

Table of Contents

HW Architecture – Common Module

Main Menu


Common (CM) Power

AA Power Supply


RP3-01 RP3-01

External IF

TX

PA

RX

LNA



PA

RX

LNA

Duplex Filter

• Comon sub-module is an integrated part of Active Antenna and its purpose is to interconnect Active Elements to BTS (System Module) or to another Active Antenna/RRH in the same RP3-01 chain.

• Common sub-module also manages and handles those functions that are common to other blocks inside Active Antenna:

• O&M of whole Active Antenna • SW storing and downloading to CM and also to AEs

AA calibration

AA control

Active Element (AE)


TX

PA

RX

LNA

Duplex Filter


PA

RX

LNA

Duplex Filter

• Power supply and distribution to AEs • Clock and timing generation and distribution to AEs

• Calibration execution and control • Power measurements of radiation pattern (beams)

• External interfaces (optical RP3-01, External Alarm & Control IF)

• Four internal electrical RP3-01

Active Element (AE)


55

TX

PA

RX

LNA

interfaces towards active elements. Duplex Filter

• In-built fans controlling


PA

RX

LNA

RN30086EN40GLA1

Duplex Filter


Technical details

Table of Contents

HW Architecture – Active Elements


Common (CM) Power

AA Power Supply


RP3-01 RP3-01

External IF

AA calibration

AA control

TX

PA

RX

LNA



PA

RX

LNA

Duplex Filter

Active Element (AE)


TX

PA

RX

LNA

Duplex Filter

AA calibration & RF Loop

56

recovery)

• RP3-01 processing • Synchronization • Multiplexing • Demultiplexing • Forwarding • Air interface timing, phase & amplitude control • RF-BB (Radio Front End BaseBand) processing (filtering, up- & down conversions, linearization, power measurements, gain control)

• Analog-to-Digital and Digital-to-Analog conversions

• RF processing (Tx chain, Power amplification, TX

PA

RX

LNA

Duplex Filter

TX

PA

RX

LNA

Duplex filtering, Low noise amplification, Rx chain)

• RF interfaces for two cross polarized antennas • Each Power Amplifier (PA) is 10W

Active Element (AE)


• Active Element (AE) sub-module (4 pcs) • Active Element control (including supervision &

Duplex Filter


PA

RX

LNA

RN30086EN40GLA1

Duplex Filter


Main Menu

Technical details

Table of Contents

HW Architecture – Antenna


Common (CM) Power

AA Power Supply


RP3-01 RP3-01

External IF

AA calibration

AA control

TX

PA

RX

LNA



PA

RX

LNA

Duplex Filter


PA

RX

LNA

• Antenna (A) sub-module: • Forms an interface between an AE radio transmission lines and freespace

• It provides: • High efficient, cross- polarized, antenna radiator structure with a desired horizontal and vertical pattern beam width

• Feed-back signal for Active Antenna calibration function • Cross-polarized RF inputs for 1800MHz band passive antenna array Calibration

Active Element (AE) TX

Main Menu

Duplex Filter


PA

RX

LNA

Duplex Filter +/-45°polarization

Active Element (AE)


57

TX

PA

RX

LNA

Duplex Filter


PA

RX

LNA

RN30086EN40GLA1

Duplex Filter


Interdependencies Interdependencies with Other Features or Functions

58

RN30086EN40GLA1


Interdependencies

Table of Contents

Main Menu

Feature Interdependancies

• In order to enable RAN2384 AAS Vertical Sectorization and/or RAN2569 AAS Tilting per Carrier and/or RAN2579 AAS RX/TX Tilting it is necessary to have one of the following HW items:

• RAN2383 AAS Active Antenna System 2100act/1800pas FAGF • RAN2597 AAS Active Antenna System 2100a/800-900p FAGP • There are no interdependancies between the following features (they can work either all together or separately) : • RAN2384 Vertical Sectorization • RAN2569 AAS Tilting per Carrier • RAN2579 AAS RX/TX Tilting

RAN 2383

or

AAS Active Antenna System 2100act/1800pas FAGF

RAN 2597 AAS Active Antenna System 2100a/800-900p FAGP

and/or

RAN2384 AAS Vertical Sectorization

59

RN30086EN40GLA1

RAN2569

RAN 2579

AAS Tilting per Carrier

AAS RX/TX Tilting


Interdependencies

Table of Contents

Main Menu

Feature Interdependancies

• RAN2383 AAS Active Antenna System 2100act/1800pas FAGF and RAN2597 AAS Active Antenna System 2100a/800-900p FAGP requires Flexi System Module Release 2 or 3:

• • • •

RAN2382 Flexi System Module FSMC RAN1016 Flexi System Module FSMD RAN1848 Flexi System Module FSME RAN2262 Flexi Multiradio System Modules (FSMF)

RAN 2383

RAN 2597

AAS Active Antenna System 2100act/1800pas FAGF

AAS Active Antenna System 2100a/800-900p FAGP

or

60

RAN1016

RAN1848

RAN2262

RAN2382

Flexi System Module FSMD

Flexi System Module FSME

Flexi Multiradio System Modules (FSMF)

Flexi System Module FSMC

RN30086EN40GLA1


Deployment Aspects

Table of Contents

Feature Activation

• AAS related features can be activated via BTS Site Manager during Commissioning/Recommissioning process.

• On page „Active Antenna System (AAS) Settings”, RAN2384 AAS Vertical Sectorization, RAN2569 AAS Tilting per Carrier and RAN2579 AAS RX/TX Tilting can be activated via ticking the appropriate checkbox

• Cell specific settings like TX tilt angle, RX tilt angle and beamwidth can be configured using table AAS settings.

• BTS Site Manager informs about the required licenses with the given configuration

• Depending on the license's that is missing or invalid, the BTSOM:

• Enforces tilt angle to default (0 degrees) tilting angle*

• Enforces RX tilt to same value as TX tilt* * details can be found in the next slide

61

RN30086EN40GLA1


Simulation backup

62

RN30086EN40GLA1


Benefits and Gains

Table of Contents

Main Menu

System-level simulations

Clutter type map

User density CDF (static simulator)

Ground height map 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0

63

RN30086EN40GLA1


20 40 60 # of users per 100 square meters

80

Benefits and Gains

Table of Contents

Main Menu


• Red points receive the signal in two ways: • Simple geometry (building height is not taken into account) • Prediction model with 3D property (signal received via

DPM predictions

diffracted ray)

• The higher masking angle difference impact could appear in some locations close to a transmitter.

• The masking angle difference for receiver point close to the transmitter is applicable to both outer (interferer) and inner (serving) antennas. Thus, pathloss difference of inner and outer cells seems to compensate each other for close locations.

64

RN30086EN40GLA1


Simple geometrical approach

Benefits and Gains

Table of Contents

Main Menu

HSDPA System-level simulations

Sector-based AAS Gain (10 site mask) Dominant Path Model (static simulator) 6000

3x2 +10 +0 PilotOPT in reference to 3x1 AAS Antennas

Sector Throughput [kbps]

5000

93%

120%

111%

90%

110%

100%

91%

90% 83%

82%

79%

4000

74%

74%

73%

74% 70%

68%

65%

76% 80%

71% 73% 67%

58% 61%

3000 44%

60%

47%

2000

34% 32%

40%

25% 20% 1000

16%

13%

20%

13%

0

0% Horizontal sectors

DPM 3x1 DPM 3x2 DPM Gain

65

RN30086EN40GLA1


Benefits and Gains

Table of Contents

Main Menu


Sector-based AAS Gain (10 site mask) 2D Model 6000

140%

3x2 +10 +0 PilotOPT in reference to 3x1 AAS Antennas 122% 106%

Sector Throughput [kbps]

104%

99%

95%

93% 4000

111% 105%

111%

5000

84%

97% 99%

94%

100% 86%

84%

79%

78%

72% 3000

72%

80%

72%

66%

64%

60%

60% 60% 48%

2000

36%

32%

35%

26%

39% 40%

23%

1000

20%

0

0% Horizontal sectors

3x1 2D 3x2 2D 2D Gain

66

120%

RN30086EN40GLA1


Benefits and Gains

Table of Contents

Main Menu


User distribution in 3x2 case (static simulator) 70.00

3x2 +10 +0 PilotOPT (DPM)

60.00

57.201

Outer Cell Inner Cell

# of served users

50.00 42.923

40.00

28.00 26.494

30.00

23.224

23.221

20.00

16.600

19.455 18.058

17.35717.731

20.488 16.278

13.341 12.26811.51911.751

16.625 10.680

10.00 4.409 1.285

4.053 .886

4.652 2.460

1.870

3.585 3.434 2.951 3.127 1.408 1.237 1.131 .7641.485 .622 .520 .928

16.326 9.89310.286

Sectors

RN30086EN40GLA1

16.304 10.032

11.849

13.336

7.975 5.072 4.862 4.590 4.283 3.732 3.208 3.074 3.041 2.748 2.754 2.460 1.390 1.180 1.816 .963

.00

67

21.570


Benefits and Gains

Table of Contents

Main Menu


3x2 DPM +10 +0 PilotOPT Pathloss delta map of inner and outer cells (azimuth 280)

• Red, orange and yellow means inner cell dominance area

• Blue, dark blue and purple means outer cell dominance area

280˚

Inner and Outer cell dominance area investigation.

outer cell dominance

68

RN30086EN40GLA1


cell’s frontier

inner cell dominance

Benefits and Gains

Table of Contents

Main Menu





280˚ 280˚

The bigger beam separation angle is, the greater inner cell dominance area is.


69

RN30086EN40GLA1


cell’s frontier


Benefits and Gains

Table of Contents

Main Menu





280˚ 280˚

The bigger beam separation angle is, the greater inner cell dominance area is.


70

RN30086EN40GLA1


cell’s frontier


Benefits and Gains

Table of Contents

Main Menu


3x2 DPM +2 -2 PilotOPT Pathloss delta map of inner and outer cells (azimuth 280)



280˚ 280˚ 280˚

Beam separation is a trade-off between the cell’s dominance clarity (lower interference) and size of the inner cell outer cell dominance

71

RN30086EN40GLA1


cell’s frontier


Benefits and Gains

Table of Contents

Main Menu


2D Pathloss

Static

Dynamic

DPM Pathloss

Static

Dynamic

Mean Cell TP [kbps]

Gain

3x1 AAS Antennas

2062

-


1805

75%


1778

72%


1775

72%


1609

56%

3x1 AAS Antennas

3254

-


2566

58%


2479

52%


2257

39%


2099

29%

3x1 AAS Antennas

2487

-


2019

62%


2027

63%


1975

58%


1857

49%

3x1 AAS Antennas

3799

-


2790

47%


2743

44%

Network Layout


2595

37%


2340

23%

HSDPA Results:

• The best performance (AAS Gain) is observed for „+10 +0” tilt offsets • From sector and site point of view vertical sectorization brings clear benefit • HSDPA CIR curve has better geometry in 3x1 scenario than 3x2 scenarios - higher intercell interferences while vertical sectorization is deployed

• In all investigated AAS configurations CIR HSDPA level is lower than in reference case.

HSDPA CIR (DPM;Static) 1 DPM 3x1 AAS Antennas DPM 3x2 +10 +0 PilotOPT DPM 3x2 +8 +0 PilotOPT DPM 3x2 +6 +0 PilotOPT DPM 3x2 +2 -2 PilotOPT

0.9 0.8 0.7 0.6 CDF

Simulator

0.5 0.4 0.3 0.2 0.1 0 -10

-8

-6

-4

-2

0

DPM=Dominant Path Model 72

RN30086EN40GLA1

2

HSDPA CIR [dB]


4

6

8

10

12

Benefits and Gains

Table of Contents

Main Menu

System-level simulations Summary

3x2 tilt offsets +6 +0

3x2 tilt offsets +10 +0

3x1 scenario

3x2 scenario

f1 f1

f1

f1

f1

f1

f1

HSUPA

HSDPA

• Considering DL direction, the strongest source of inter-cell interference for an inner cell is an outer cell (and vice versa)

• The higher tilt offset between the inner and outer cell, the better beam separation is (in terms of pathloss). Lower level of signal is visible as interference in outer cell (and vice versa)

• This is a reason why +10+0 tilt offsets combination gives better results in downlink than +6+0

• In simulations, a fixed vertical beamwidth has been used due to availability limitations – flexible vertical beamwidth gives an opportunity to control the size of inner/outer cell dominance area

• Considering UL direction, cell’s do not interfere each other • Users who are served by one cell in reference scenario, in 3x2 scenario are served by both inner and outer cells

• That means more resources are available (in terms of noise rise) to be used. Users can transmit with higher bitrates

• More users are served by the inner cell if smaller inner/outer beam separation is applied.

• The capacity gain in uplink is higher when users are distributed more equaly between the outer and inner cells

• In simulations, a fixed vertical beamwidth has been used due to availability limitations – flexible vertical beamwidth gives an opportunity to control the size of inner/outer cell dominance area

73

RN30086EN40GLA1


References, Abbreviations and Q&A

74

RN30086EN40GLA1


References and Abbreviations

Table of Contents

Active Antenna System NEI References

• • • • • • • •

75

AAS System Feature Specification FAGF Flexi Multiradio Antenna 2100/1800 HW Architecture Specification NetEng AAS Vertical Sectorization Capacity Study PDDB WBTS.WN8.0 1.0-1.0 parameter report NSN Active Antenna System Executive Summary Focal Point AAS Feature extract NSN Flexi Multiradio Antenna System Customer Presentation NSN Flexi Multiradio Antenna System Datasheet

RN30086EN40GLA1


Main Menu

References and Abbreviations

Table of Contents

Main Menu

Active Antenna System NEI Abbreviations

2D

Two Dimension

f1

Frequency #1

3D

Three Dimension

f2

Frequency #2

AA

Active Antenna

Global System for Mobile Communications

AAS

Active Antenna System

HSDPA

High-Speed Downlink Packet Access

BTS

Base Transceiver Station

HSUPA

High-Speed Uplink Packet Access

Base Transceiver Station Operation and Maintenance

IAS

Integrated Antenna System

CDF

Cumulative Distribution Function

LNA

Low Noise Amplifier

CIR

Carrier-to-Interference ratio

MBB

Mobile Broadband

CM

Common Module

MIMO

Multiple Inputs Multiple Outputs

deg

Degree

MOC

Managed Object Class

div

Diversity

NEI

Network Engineering Info

DL

Downlink

NSN

Nokia Siemens Networks

Dominant Path Model

O&M

Operation and Maintenance

BTSOM

DPM

76

GSM

RN30086EN40GLA1


Q&A

Question: Question: Question: Question:

Question:

Question: Question:

Question: Question: Question: Question:

77

Main Menu

What is the power of the power amplifier in Active antenna? Single power amplifier is 10W. There are eight power amplifiers inside Active Antenna (two for each Active Element). What is the total weight of the passive and active part of the AAS? For FAGF HW module, the total weight is less than 36 kilograms. Detailed data related to different HW modules can be found in the HW specification documents. It is unclear how we can separate UL noise of outer cell from UL noise of inner cell. Splitting one horizontal sector into to two vertically arranged cells gives more resources in terms of noise rise. Can we switch between active & passive mode (eg change GSM to active & WCDMA to passive)? Will this be also supporting LTE. Specific Active Antenna HW module is designed to work in a specific frequency configuration. WCDMA can operate on 2100 MHz (in case of FAGF and FAGP). Passive part can be used for whatever operator wants: WCDMA/GSM/LTE. For active frequency band in LTE there are dedicated HW modules. Isn't it true that beam forming is possible with one PA by placing phase-shifters between PA and antenna element? The beamforming mechanism controls the phase and amplitude of the signal to create a pattern of constructive and destructive interference in the wavefront. In case of Active Antenna System in RU40, there is no user specific beamforming – only fixed beamforming is supported. That means the electrical tilts of each carriers and transmission direction (UL, DL) can be adjusted. Additionally, it is possible to shape the beam – make it wider or narrower in vertical plane (via setting Vertical Beam Width parameter). The tilt parameters belong to WBTS configuration data - do we need to reboot WBTS when we change tilt values? WBTS restart is not required after changing the tilt settings. How to verify whether ASW features are properly activated? How to deactivate them? There is no simple way to check whether ASW features work properly. The best way to check is to perform measurements in anechoic chamber. It may happen that the BTS site manager will set the parameter values of ASW features but the Common Module inside the Active Antenna will not execute e.g. tilt setting because the license is missing. Are the amplifiers in the dual band antenna? Power amplifiers inside active antenna work only for active part of the antenna. To operate on passive part, additional RF module is required. Regarding passive part: What TILT options do we have? (Electrical and Mechanical)? Mechanical tilt is common for active and passive part of Active Antenna HW module. On passive part of the AAS there are 8P connectors to connect RET control for passive band. Regarding active part: Do we have option of UPTILT? (in the case we apply MECHANICAL tilt on the PASSIVE), but don't want TILT on active? Yes it is possible. Electrical tilt range for active part is: <-7;+7> degrees. RP3-01 link, is it 6 Gbps or 3 Gbps? Link speed signal for RP3-01 interface is: Low-state 3072 Mbps and high-state 6144 Mbps

RN30086EN40GLA1


Q&A

Question:

Question:

Question: Question: Question: Question: Question: Question: Question: Question:

Question:

Question:

78

Main Menu

If you can have only 3 sector of 65° with Inner and Outer, is it possible to use 4 carriers for an operator which have 20MHz band in 3G with One active antenna, "coupling " as it is done in passive or is it necessary to have 2 antennas? It is possible to use up to 8 WCDMA carriers with one AAS (40MHz bandwidth). Question on the Operating bands can we have AAS on UMTS 900? Currently, only two HW modules are going to be available in RU40 – both of them operates on 2100 MHz active frequency band. There are plans to introduce HW modules with different active frequency bands but no strong statements at the moment. In this example (slide 42) can we have both TX on same polarization? Yes, such an allocation is possible as well. This was just an example. Typo on slide 45 second bullet point max power of AE is 10W not 20W. There is no typo in this slide. Each Active Element is equipped with two power amplifiers. Each power amplifier is 10W. Can we have also 4 way RX configuration with a single cell with AAS? This configuration (4-way RX div) is not supported at the moment. In slide 46 we have same polarization numbers with different polarizations! Yes, you are right. My mistake – slide is already corrected. Thank you! Are all these 3 features are independent (Vertical sectorization, Tilting per carrier , RX/TX tilting? There are no interdependencies between these features (they can work either all together or separately). Did you compare 3x1 AAS to 3x1 Passive? This comparison is done in the following document: https://sharenet-ims.inside.nokiasiemensnetworks.com/Overview/D462638923 Do you intent to do simulation with equal power for inner and outer? This scenario has been simulated and results are available in the following document: https://sharenet-ims.inside.nokiasiemensnetworks.com/Overview/D462638923 In case +10 0 if we increase the beam width for the Inner, is it not going to increase the interferences in the outer cell ? Most probably yes, but my feeling is that even with higher interference level, high capacity gains will be available. Increasing inner cell size will introduce high capacity gains even with low network load. Have you simulate the SHO performances Inner/Outer cells ? How do you think would be the strategy to define the neighbors in the Inner Cell? Should we just define neighbors relationships to the outer cell and to the cells within the same site (the other sectors)? Answer under verification Do we have a comparison between 6 sectors vs. AAS vertical sectorization? Yes we have, results can be found here: https://sharenet-ims.inside.nokiasiemensnetworks.com/Overview/D431631677

RN30086EN40GLA1


06_01_RN30086EN40GLA1_WCDMA Active Antenna System.pdf

Recommend Documents