mimo presentation huawei 15thmarch11 informa

Improving the spectral efficiency and the Mobile Broadband Experience

www.huawei.com

Broadband Experience with MIMO

HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confidential

Fabrizio Cortesi

Director of Strategy & Cooperation Department - Europe

WEU Wireless Strategy & Planning [email protected]

Content

1. Market status and future outlook of MIMO

2. Ecosystem status

3. Addressing Past performance problems through

implementing new 3GPP spectral algorithms (and

proprietary network based solutions……)

4. Performances from real deployment cases


4. Performances from real deployment cases

5. Evolution: Combining MIMO with 64 QAM and

next steps to further improve spectral efficiency

Mobile Broadband, the Undoubted TrendGlobal Wireless Forecast Deployment timeline of 3GPP based MBB Technologies

LTE Rel 8 LTE Advanced

HSPA

DL: 14Mbps

UL: 5.76Mbps

HSPA+ Rel 7

DL: 28Mbps

UL: 5.76

HSPA+ Rel 9

DL: 84Mbps

UL: 23Mbps

HSPA+ Rel 8

DL: 42Mbps

UL: 11Mbps

HSPA+ Rel 10

DL: 168Mbps

Source – Informa Telecoms & Media (Nov 2009)

• From 2010 and onwards, global data traffic is exponentially increasing compared to voice traffic

• Deployment of HSPA+ and LTE networks, smart traffic management, along with the utilization of new

frequency bands will help to handle these data traffic requirements

2008 2009 2010 2011 2012 2013

LTE Rel 8

DL: 150Mbps

UL: 50mbps

LTE Advanced

DL: 300Mbps to 1Gbps

Huawei Wireless Intelligence 2010


frequency bands will help to handle these data traffic requirements

• HSPA+ & LTE will work as mutually supporting technologies instead of competitors to fulfill data

demands

• Upgrading HSPA+ network is an easy and cost effective way to provide higher capacity data services

• MIMO is a key feature for high spectral efficiencies in both HSPA+ and LTE

MIMO: market status, trials, deployments

� Bell Canada

� Telus � MTS� VF Romania� VF Czech� VF Spain� VF Italy� VF Greece� VF Nether.

� PCCW� M1 Singapore� Emobile

� PCCW� M1 Singapore� Emobile

MIMO TrialsMIMO Trials

� Reliance India

� Airtel India� BarthiIndia

� MobilandSriLanka

� VF Nether.� Cosmote Gr� Tango Lux� Netcom Norway

� MobistarBelgium

� TelO2 De� PTC Poland � Aero2 Poland (900 MHz)

� TIM� SwiscommSwitz

� VF Egypt� Vodacom South Africa

� SafarycomKenya

MIMO ready networksMIMO ready networks

� Emobile� Smartone-VDF HK

� Emobile� Smartone-VDF HK

MIMO TrialsMIMO Trials

Commercial deploymentsCommercial deployments


>11 commercial HSPA+ networks support

28 Mbps utilizing MIMO technology

large MIMO trials experience from major

suppliers

Evolution of spectral efficiency

Title

84/168 Mbps /

600Mbps /40MHz

Spectral Efficiency300Mbps /20MHz

CACA

CoMP

Relay

HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential

21Mbps /5MHz

42Mbps /5MHz

10/20 MHz

64QAM64QAM

2x2MIMO

DC

64QAM 64QAM

2x2MIMO

Tens of networks deployed or under trial, by Huawei

2x2MIMO

28Mbps /5MHz

2011 - 2013 Beyond 2013

64QAM

OFDM OFDM

4x4MIMO

4x4MIMO

Relay

64QAM MIMO+16QAM MIMO+64QAM DC+16QAM DC+64QAM

84/10MHz

63

168/20MHzHSPA+ Evolution, peak rates

50%

14/5MHz

21/5MHz

28/5MHz

42/5MHz

28/5MHz

42/10MHz

50%

33%DC-HSDPA +

64QAM+ MIMO

(combinations)

56

Commercial

Mbps/MHz


HSDPA HSPA+ 64 QAM HSPA+ MIMO HSPA+ MIMO+64QAM

HSPA+ DC 16 QAM

HSPA+ DC 64 QAM

HSPA+ DC 64QAM+MIMO

2009 2010 2011 2010 2010 2012

HSPA+ MC 64QAM+MIMO

MIMO delivers the highest spectral efficiency

Commercial deployment

date

2013/14�

MIMO: ecosystem status

•R7 MIMO 28 M DL

1Q `10

UE Chipset Plan

Commercial devices

1Q `11

R8 64 QAM with MIMO 42Mbps

2Q’12?

R9 DC 64 QAM with MIMO 84 M DL

’13-’14

1H ‘11

Industry Picture

R10 MC 168 M DL

HSPA+ Terminal Ecosystem today92 devices available commercially by 20

suppliersdevices Roadmap

suppliers61 devices support 21M, 9 support 28M, 22

support 42 M

HSDPA Category modulation modemaximum bit rate supported by

MAC-ehs (kbps)

Category 25 QPSK, 16QAM 46740

New UE Category to support DC-HSDPA+MIMO:

Example: wide MIMO support by QUALCOMM


QPSK, 16QAM 46740

Category 26 55904

Category 27 QPSK, 16QAM,

64QAM

70560

Category 28 84384

Infra ecosystem: Huawei MIMO RF solution makes MIMO more affordable through…

RRU is cascaded with CPRI cable. No need additional CPRI and

power cable from BBU

HSPA, Non MIMO site

RRU

BBU

RRU

RRU

BBU

PA

PA

Only SW upgrade if the radio unit has two Tx chains!

•Classical industry solutionrequires HW additions

•No feeders/antennas change


BBUHSPA+ •64QAM•DC-HSDPA LTE

HSPA

HSPA+ 64QAM+MIMO

RRU

Software Upgrade

For MIMOFor different band, add LTE RRU

For same band, software upgrade

Software Upgrade

LTE RRU

Smooth introduction of MIMO, and evolution to LTE (same band)

8

MIMO Delivers the Highest Spectral Efficiency

Mbps

Industry Simulation Result: average sector throughput

6

7

DL 16QAM DL 64QAM MIMO(16QAM) MIMO(64QAM)

• MIMO proved to bring the highest performance in spectral efficiency, cell capacity and

Simulation Condition�

PA3,Macro Cell, 5users/sector, wrap round, ISD500m


• MIMO proved to bring the highest performance in spectral efficiency, cell capacity and

user throughput across the whole cell

• The Simulation result shows that

�MIMO will bring more than 16% cell throughput gain compared to 16QAM.

�MIMO with 64QAM will bring more than 10% cell throughput gain compared to 64QAM

DC-HSDPA+MIMO Improve the user experience

Gain of DC-MIMO vs DCfullbuffer service, 5 user/cell, 9sites(wrap-round),ISD=500m, PA3

10

DC -MIMO Performa nc e G a in (Burst Tra ffic ) ,PA3

14

16DC -HSDPA+MIMO+64Q AM

Full buffer service test:cell throughput comparison

Burst service test:average user throughput comparison

0

2

4

6

8

10

16QAM 64QAM

modulation in DL

Cell

Thro

ughput (M

bps)

DC DC-MIMO

0

2

4

6

8

10

12

14

0 5 10 15 20

User Number/sec tor

Average Burst Rate(Mbps) DC -HSDPA+64Q AM

17.5% 12.1%

Traffic model: each user downloads a file of 512kbyte every 5s.

27%

85%


� Compared with DC-HSDPA, DC-HSDPA-MIMO improves the system

capacity and enhances the user experience.

� DC-MIMO is much less sensitive than DC-64 to the cell load

MIMO working mode and problem statement:

PSP �Primary and Secondary Pilot�

There are two problems with PSP mode which were addressed.

MIMO deployment: Solutions to the problem of co-existence

STTD (Spatial Time Transmit Diversity)

-EQ receiver would fall back to rake receiver due to STTD and that would degrade the legacy terminal.

-Performance and average 30% throughput loss was observed at near and medium point

There are two problems with PSP mode which were addressed.

PCPICH

CCH

HSDPA

MIMO

SCPICH

Not Used

MIMO

PA1 PA2

Secondary pilot is seen as interference by

legacy HSPA devices, leading to a decline in

performance.

Leads to low amplifier efficiency Solution: VAM (Virtual Antenna Mapping)

Solution: proprietary Algorithms have been developed and verified in the field, with good results

problems


MIMO MIMO

Two PAs have the same power,

and the MIMO power

configuration in each PA need to

be balanced.

field, with good results

3GPP CR: TxAA extension for (new) non-MIMO UEs, Rel 9 – long term

Big cell capacity gains were demonstrated•Impact on legacy HSDPA reduced to <5%

Huawei MIMO Solution: MIMO+HSDPA co-Carrier

� PSP mode (Primary and Secondary Pilot)

� To avoid STTD issues for legacy HSDPA terminals which used largely in

current network.

� Intelligent Interference Control (IIC Huwei RRM)

Large degradation for legacy HSDPA in

Interference from the secondary

PSP mode

HSDPA

IIC VAM

Issues

� Intelligent Interference Control (IIC Huwei RRM)

� To solve HSDPA performance degradation issue

� Virtual Antenna Mapping (VAM Standard)

� To solve PA power inefficiency issue

Huawei RRM


for legacy HSDPA in STTD due to fallback from

LMMSE to RAKE

secondary antenna is controlledS

-CPICH

MIMO

P-CPICH

HSDPAMIMO Power

balance

Huawei RRM

Performance for MIMO+HSDPA Co-carrier

Results from field test in commercial networks

� HSDPA service and cell throughput

� There is no compatibility issue for legacy terminals;

� Legacy HSDPA performance average loss is less than 5% for HSDPA

users sharing the same HSPA carrier than MIMO users.

2,00

4,00

HSDPA Throughput Loss/Gain (Mbps)

15%

3%

12%Mbps


0,00

Good Meadium Bad

1Tx Huawei Solution

15%

No service impact is perceived by the HSDPA legacy users

Coverage

conditions

MIMO+HSPA Co-Carrier

Spectrum: 5Mhz

MIMO+HSPA

MIMO Ensuring Coming-Capacity

9,00

DL Cell Throughput ComparisonField test, 5 Users ( 2 good + 3 medium) in cell

Th

rou

gh

pu

t (M

bp

s)

Performance Gain

Non-MIMO UE

GainCell Gain

�16QAM

�

Industry > -30% ~ 16%

Huawei < -5% ~ 25%

Gain > 25% (1) >9% (2)

5,00

16QAM(CAT10) 64QAM MIMO

DU

Me

ter

Th

rou

gh

pu

t (M

bp

s)

25% 15%


1. Improve 25%+ Data Rate for Legacy Subscribers Compared to Industry Level.

2. 9%+ Cell Throughput Gain Achievable Compared to Industry Level.

Evolution and Deployment strategy

Scenario�

1. MIMO could be deployed for any HSDPA

scenario. MIMO performs better in Dense urban

and urban area (higher scattering, multipath)

2. The better the CQI is, the better MIMO

performance, and MIMO technique is good for performance, and MIMO technique is good for

lower mobility users

3. For operators who have only one carrier, MIMO

is the unique choice for evolution.

4. More than 1 carrier: deploy MIMO with HSDPA

on only F1 in the early phase, and SW

configure MIMO on the second carrier when

capacity needs it.

RF Power configuration�

Keep the same total output power: E.g.: existing


Keep the same total output power: E.g.: existing

network 20W ��2*10W after MIMO upgrade;

For new build network: Keep the same total output

power of MIMO and Non-MIMO carriers. 2*20w

is recommended as better coverage

requirement.

SummaryMIMO’s role in MBB evolution�

� MIMO is a necessary and cost effective step in the evolution of HSPA, as well as of

LTE

� The industry chain of MIMO is mature (2x2MIMO terminals are already in commercial

use), with a clear evolution path (QCT and other big players support it)

� Wide experience of commercial trials and deployments makes Huawei the leader in

HSPA+ (and MIMO).

Performance�

� 25% cell throughput gain compared to 16QAM, 15% compared to 64QAM.

� 50% average single user’s throughput gain with 16QAM and 20% with 64QAM.

� 100% Single user peak rate gain compared to 16QAM, 33.3% compared to 64QAM.

� With latest Huawei MIMO and HSDPA co-carrier solution, No service impact is


perceived from HSDPA legacy users

Major MIMO deployment issues are solved

� Legacy 1Tx RF cascade and new 2Tx RF cost effective solution

� New algorithms have been proved for solving MIMO+HSDPA co-carrier

MIMO is ready to go!

Thank youwww.huawei.com

Copyright©2008 Huawei Technologies Co., Ltd. All Rights Reserved. The information contained in this document is for reference purpose only, and is subject to

change or withdrawal according to specific customer requirements and conditions.

mimo presentation huawei 15thmarch11 informa

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