Huawei LTE overview.pptx

(1)

Security Level: Confidential

www.huawei.com

Huawei LTE

Overview

(2)

LTE Market Update

Advancing LTE Commercialization

Leading LTE Solution

(3)

Increasingly Global LTE Commitments

• _{156 operators in 64 countries are investing in LTE}

› 113 LTE network commitments in 46 countries, 43 additional pre-commitment LTE

trials

› 22 expected launch by end of 2010, and at least 55 LTE networks are anticipated to

be in commercial service by end 2012

Source: GSA, Oct. 2010

6X

increase in

past 18 months

(4)

Widely Available Spectrums for LTE

Deployment

Europe:



_{Major in 2.6G/800M}



_{1.8G Refarming}

Europe:



_{Major in 2.6G/800M}



_{1.8G Refarming}

North America:



Major in AWS/700M



PCS(1900M), 850M refarming

North America:



Major in AWS/700M



PCS(1900M), 850M refarming

Latin America:



Major in 2.6G/AWS



_{Roaming for U.S and EU}

Latin America:



Major in 2.6G/AWS



_{Roaming for U.S and EU}

MENA:



_{Major in 2.6G}



_{1.8G Refarming}

MENA:



_{Major in 2.6G}



_{1.8G Refarming}

C.I.S



_2.6G



_{1.8G Refarming}

C.I.S



_2.6G



_{1.8G Refarming}

Japan:



_{1.5G/800M/1.7G/2.1G by}

NTT/KDDI/SBM

Japan:



_{1.5G/800M/1.7G/2.1G by}

NTT/KDDI/SBM

China:



_{Major in TD, 2.3 or 2.6G}



_{TD/FDD Convergence}

China:



_{Major in TD, 2.3 or 2.6G}



_{TD/FDD Convergence}

Asia Pacific:



_2.6G



_{1.8G, 2.1G Refarming}

Asia Pacific:



_2.6G



_{1.8G, 2.1G Refarming}

India:



_{BWA (TD-LTE) 2.3G}

India:



_{BWA (TD-LTE) 2.3G}

Africa:



_{Major in 2.6G}



_{1.8G Reframing}

Africa:



_{Major in 2.6G}



_{1.8G Reframing}

_{License Issued} _{Auction in 2010} _{Auction after 2010} _TBD

Spectrum License Progress

• _{2009: 10 countries, 38 Operators}

• _{2010: 20+ countries, 50+ operators}

• _{2011: 30+ countries, 60+ operators}

-- By Introducing new spectrums or refarming

spectrums

(5)

LTE Take-up Roadmap: From Data offload to Full

Services

Phase2

(2011/12)

Phase3

(2012/13)

Data Only

Data Only + CSFB

Full multimedia

Phase4

(>2013)

Phase1

(2010/11)

IMS VoIP & SR-VCC

G/U/L

handsets

launch

IMS

PCC &

QoS

VoIP

handsets

launch

All-IP

network

• _{LTE: Offload USB Dongle Traffic}

• _{UMTS: Full Services to Smart-phones}

• _{Migrating 2G Voice to 3G Voice}

• _{VoIP over IMS for Operator Voice}

• _{Internet VoIP (Skype alike) Prohibited, or provided}

with specific package

(6)

Chipset

Vendors

USB LTE only

Terminal

Vendors

Terminal

USB

Multi-mode: GUL, CL Multiple Commercial Devices: Handset USB, MID, Netbook, etc.

2009 2010 2011 2012

Commercially Available LTE Terminals



Mainstreaming chipset and terminal vendors will launch

commercial terminals since 2010, accelerating LTE commercial

program dramatically.

(7)

LTE will be the Single Global Standard

FDD LTE

TDD LTE

UMTS

CDMA

TD-SCDMA

GSM

WiMAX

700M 800M 850M 900M 1500M 1700M 1800M 1900M 2100M 2300M 2600M ……



LTE will be the natural migration choice for mobile

operators.

84Mbps /10MHz 21Mbps /5MHz 42Mbps /5MHz 64QAM 64QAM 2x2 MIMO DC 64QAM 2x2 MIMO 2x2 MIMO 28Mbps /5MHz

Spectral Efficiency

Title

64QAM >1.2Gbps /80MHz 64QAM 300Mbps /20MHz OFDM OFDM 4x4 MIMO CA 4x4 MIMO CA CoMP Relay 2x2 MIMO 64QAM OFDM 150Mbps /20MHz

(8)

LTE Market Update

Advancing LTE Commercialization

Leading LTE Solution

(9)

Persistent Investment on LTE

Beijing Chengdu Shanghai Stockholm Core algorithm Dallas Moscow RF technology San Diego ASIC, algorithm Terminal, chipset eNodeB, RF, eNodeB, SAE, Terminal, ASIC



7 R&D centers dedicated to LTE



2500 engineers dedicated to LTE

R&D

Worldwide LTE R&D Centers



No.1 LTE patents share among

infrastructure vendors, holding 270+

essential patents



5800+ LTE/SAE standard proposals to

Global LTE Patent Share



Source: ETSI



(Oct. 2010)

(10)

Huawei is leading in INNOVATION and COMMERCIALIZATION of LTE

LTE World Summit

2010



Significant Progress for a

Commercial Launch of LTE



Best Contribution to

Research & Development

for LTE

Leading Position in LTE Field



_补充

图片



Best Contribution to R&D

for LTE in North America

(11)

Huawei LTE Global References

20 Commercial Contracts

(as of Nov. 2010)

Norway , Serbia Norway Sweden Latvia Belgium Austria Uzbekistan & Armenia Poland Germany Spain China

70+ Trials

Italy Austria Germany Saudi Arabia Saudi Arabia UAE USA Portugal USA Malaysia China HK Australia Kenya South Africa

…

(*) 8 commercial contracts are not listed due to NDA with customers.

World’s

1

st

_{LTE commercially}

_launched

network

World’s

1

st

_{LTE 800M}

_commercial

network

World’s

1

st

GL 900MHz

and

1

st

LTE RAN Sharing

network

World’s

1

st

_{LTE 1800M}

_and

_{LTE TDD}

commercial network

Germany Spain Greece Switzerland Singapor e Philippine Nigeria Chili

(12)

TeliaSonera, the World’s 1st LTE Commercial

Network

Oslo

DL data rate:

90.6 Mbps



Significant performance

enhancement

:

10Mbps

higher

throughput after upgrade

Quality Proved

Commercial Capability

Quality Proved

Commercial Capability



Fastest MBB network

since the beginning

of launch

(13)

RAN sharing: MOCN

Shared eRAN Operator A

Operator B GSM

GSM+LTE

LTE

Multi-Mode: LTE900 & GSM900

900MHz cell 2.6GHz cell

Co-site LTE on different frequency

Multi-Band: 2.6G & 900M



_{World’s 1}

st

GL Multi-Mode:

GL900



_{World’s 1}

st

LTE RAN Sharing:

Telenor &

Tele2



_{World’s 1}

st

Multi-Band LTE:

2.6G &

900MHz

World’s 1

st

LTE on Multi-Mode, Multi-Band and RAN

Sharing

99% national LTE coverage

with GSM Modernization

99% national LTE coverage

with GSM Modernization

(14)

Vodafone D2, the World’s 1

st

DD800 LTE Commercial

Network

Challenges and Needs

• _{Commitment to German Government for universal}

broadband coverage with DD800M in rural area

• _{Reducing OPEX (energy, leasing and rental cost, Q&M,}

etc.)

• _{Minimizing Complexity with “One Site, One Vendor”}

strategy

• _{All IP Network for MBB service booming}

Solutions and Benefits

• _{E2E LTE 800MHz solution to support the MBB business}

• _{Fast deployment with world's smallest and lightest RF}

unit (Huawei 3MRRU)

• _{Leading SingleRAN solution to reduce OPEX greatly}

• _{One Site for 3 technologies (GUL) and 5 frequency}

bands (800/900/1800/2100/2600MHz)

3M RRU: LTE 800MHz _{UMTS 2100MHz} _{LTE 2600MHz} GSM 1800MHz GSM 900MHz _M R F U M R F U M R F U fiber M R F U M R F U M R F U BBU

(15)

World’s 1

st

LTE 1800MHz and LTE TDD Commercial

Network

Challenges and Needs

• _{New mobile operator in Poland telecom market, finding}

differentiated services to compete with existing

operators

• _{Fast growing data service requirement and saturated}

voice service market

• _{Making best use of 19.8MHz available bandwidth on}

1800M

Solutions and Benefits

• _The

_{world’s 1}

st

_{LTE 1800}

_{commercial network}

• _{E2E LTE1800 solutions}

_{to meet MBB requirement}

• _{LTE1800 RAN sharing}

_{ensures fast deployment with}

lower TCO

• _{Deploy the}

_{world’s 1}

st

_{LTE TDD 2.6G}

_commercial

network



RRU:

SDR capable

RF

modules supporting

software upgrade from GSM

1800 to LTE 1800

(16)

World’s 1

st

TD-LTE Field Trial Network



Sole vendor

to cover the whole

out field areas of Shanghai Expo



End-to-End TD-LTE Solution



High performance

TD-LTE

services

•

20MHz bandwidth in 2.3GHz

•

Peak rate: DL 75Mbps/UL 25Mbps

•

Avg. rate: DL 40Mbps/UL 15Mbps



Delivering large varieties of

mobile broadband services

TD-LTE covers the whole expo campus

TD-LTE CPE

TD-LTE

eNodeB

RRU

SAE

BBU

End-to-End TD-LTE Solution

HD video

conference

HD video

monitoring

HD

video-on-demand

17 eNodeBs, 5.28km2

(17)

LTE Market Update

Advancing LTE Commercialization

Leading LTE Solution

(18)

Challenges

Leading LTE Solution

E2E Readiness

Performan

ce

Enhancem

ent

Cost

Effectiveness

Smooth

Evolution

Spectrum

Backhaul

Performance

Interoperability

Network

operation

Device

availability

…

(19)

End-to-End LTE Readiness

(20)

Distributed

Outdoor

Macro Indoor_Macro

IP Backhaul or MSTP MME SGW/PGW HSS PCRF

End-to-End LTE Solution



Self-developed



Various Types



Customized Multi band



Unified Platform



Flexible Installation



Green Base Station



Unified Platform



Intelligent Capability



Highest Throughput



Multiple Access Interface



Future Oriented Platform



Cost-efficient Transport

eRAN

Backhaul

EPC

Terminal

(21)

LTE Product Portfolio

Common Modules BBU3900 1 RFU RRU 3

Distributed

eNodeB

DBS3900

_{Indoor Macro}

eNodeB

BTS3900/L

Outdoor Macro

eNodeB BTS3900A

2

• _{One RF module for MIMO}

• _{Flexible bandwidth: 1.4M/3M/5M/10M/15M/20MHz}

• _{Full 3GPP bands: 2.6G/2.1G/1800M/900M/800M/AWS/700M, etc.}

Common Platform

Common Modules

• _{Well-proven SingleRAN platform}

• Common platform for G/U/L

• _{Common platform for FDD & TDD}

World 1

st

LTE Commercial Release in Q2’09, 1 Year Ahead in Industry!

4

(22)

• LTE/HSPA/EDGE multimode • USB rotator with inner antenna • Commercial Phase 1: Dec. 2010 • Commercial Phase 2: Apr. 2011

LTE CPE - B593

• LTE/HSPA/EDGE multimode • FE/WIFI 802.11n,b,g • Commercial: Jun. 2011

USB Modem

E398

• LTE/HSPA/EDGE multimode • For friendly trial

USB Modem

E2701

2009

2010 2011

Huawei LTE Terminal Roadmap

Test UE FDD 1.0

LTE FDD 2.0

LTE CPE - B390

• LTE DD800 • WLAN 802.11n,b,g • Commercial: 2011Q2

T

es

t

U

E

C

o

m

er

ci

al

•DL/UL: 50/50Mbps •DL 2*2 MIMO • DL/UL: 150/75 Mbps • DL 4*2 MIMO • DL: 135Mbps, UL: 45Mbps • DL 4*2 MIMO • 2.3G, 2.6G

LTE TDD 2.0

(23)

Performance Enhancement

Experienc

e

+

Experienc

e

+

Coverage

+

Coverage

+

Capacity

+

Capacity

+



Improving cell

throughput



Increasing cell edge

user data rate



Heterogeneous

architecture



UL/DL coverage enhancement solution



Multi-band combination to enlarge LTE coverage



Seamless service

experience



Service continuity

solution

(24)

2x2 MIMO

eNode B UE 1

1x2 SIMO

eNode B UE 1

In typical urban

area:

_{15%~28% gain}

_{over SIMO @}

Macro

~50% gain

over SIMO @ Micro

L T E L T E L T E

Macr

o

Micro

MIMO, the Key to Improve Cell

Throughput

-- System Gain: 2X2 MIMO over SIMO

Capacity

+

Capacity

+

T h ro u g h p u t (M b p s) 28.34% 18.15% ISD:500m Speed:3km/h 13.88 16.4 9.42 12.09 12.36 14.23 15.12% MIMO SIMO xx.xx%: Gain ISD:500m

Speed:30km/h ISD:1732mSpeed:3km/h

5 10 15 20 T h ro u g h p u t (M b p s) 46.40% 46.94% Outdoor-to-Indoor Speed: 3km/h 23.24 34.15 56.68% MIMOSIMO xx.xx%: Gain 24.03 35.18 17.15 26.87 Outdoor-to-Outdoor

Speed: 3km/h Outdoor-to-OutdoorSpeed: 30km/h

10 20 30

(25)

More Gains through Higher-order MIMO



23%~90%

increasing in edge user

throughput

4x4 MIMO v.s. 2x2 MIMO:

~ 50% gain

in average cell

throughput



23%~90%

increasing in edge user

throughput

2x4 MU-MIMO v.s. 1x2 SIMO:

~50% gain

in average cell

throughput

eNodeB UE 1 UE 1 UE 2 eNodeB

Capacity

+

Capacity

+

UL 2×4 MU-MIMO

DL 4×4 MIMO

(26)

Adaptive MIMO Increasing Cell Throughput

Adjust MIMO mode according to

channel quality and user’s velocity

Different MIMO modes fit different

scenarios

SFBC and CL Tx Diversity (rank=1)

increase link reliability and coverage

OL SM and CL-SM (rank=2) increase

throughput

10% gain

in average cell throughput

over non-adaptive MIMO.

Adaptive MIMO

Benefits:

Capacity

+

Capacity

+

DL:OL-SM

UL:MU-MIMO

DL:SFBC

UL:Rx

Diversity

DL:CL-SM

UL:MU-MIMO

DL:CL-Tx Diversity

UL:Rx Diversity

Channel Quality (SINR)

Open Loop

Closed Loop

Cell Center Cell Edge

M o b il it y V e lo c it y ( k m /h )

(27)

Increasing Cell Edge User Data Rate with IRC and

ICIC

IRC – Interference Rejection

Combining

Interfering cell Victim cell



_3dB

_{gain in uplink coverage}



_15%

_{higher uplink capacity}



_50%

_{higher throughput for cell edge users}

Noise

Evaluated

antenna 1

antenna 2 _EvaluateNoise

d combining Interfering 2 3 6 5 7 4 2 3 5 9 1 1 4 7 8 6 Frequency Cell 1,4,7 Power Frequency Cell 2,5,8 Power Frequency Cell 3,6,9 Power



_{Reducing the DL inter-cell interference}

among neighbor cells



_30~50%

_{throughput increased for cell}

edge users (<50% load)

Different subband allocated for different cell edge users among cells

ICIC – Inter-Cell Interference

Coordination

Capacity

+

(28)

Pico / Femto for indoor coverage

Micro BTS for hot-spot coverage

Macro / DBS for macro-cell coverage

G / U G / U G / U L T E L T E L T E One network one deployment one maintenance

Solutions

GSM / UMTS Layer

Pico

Micro

Femto

Macro

Relay

LTE Layer

Heterogeneous Architecture

• Inter-RAT Mobility

Control

Heterogeneous Architecture to Improve System

Capacity

• Intra

frequency

mobility

control

Capacity

+

Capacity

+

• Inter

frequency

mobility

control

(29)

Coverage Enhancement Solution

High Rx Sensitivity : 0.5-1 dB gain

coverage enhancement solutions

4*2/4*4 MIMO - 3dB gain

Radius

High Output Power – 3dB gain

RRU close to Antenna - 3dB

gain

RRU close to Antenna - 3dB

gain IRC - 3dB gain TTI bundling - 4dB gain

U

p

lin

k

D

o

w

n

lin

k

4 Antenna Receive Diversity (MIMO) -

3dB gain

3~5dB

gain

3~5dB

gain

40%

Coverage

Increased

40%

Coverage

Increased

TTI bundling, 30% coverage enhancement

Before Bundling

After Bundling

TTI bundling can be introduced:  _{Limited by uplink coverage}  _{VoIP or PS data services with}

low data rate

Bundle 4 TTIs together



_{Same UL resource transmitted 4 times}



_{4dB gain in UL coverage}

30%

Coverage

+

(30)

Sub-Urban Rural Urban L-2600 (20 MHz) Hot spot L-1800 (>10 MHz) L-800 (5, 10, 15 MHz) L-900 (5 MHz)

Multi-band Deployment to Enlarge LTE

Coverage



2600 MHz:

LTE coverage in hotzones / cities



1800 MHz:

migrate from GSM to LTE, covering

Suburban



900MHz:

LTE national coverage with L-900 when

possible



800MHz:

LTE national coverage

• _1800M:

_3~5dB

_Gain,

_30%~50%

_{Site Reduction}

• _{DD 800:}

_{10 dB}

_Gain

Coverage Gain with Low Frequency

Multi-band LTE Deployment Strategy

Wide Coverage

2.6GH

z

1800MHz

DD

_800MHz

Distance

3d B _10d B

Urba

n

Combination of lower and higher bands to meet both coverage and

capacity challenges.

Coverage

+

(31)

Core algorithms guarantee performance:



_{AFC (Auto Frequency}

Correction)

algorithm to eliminate

Doppler effect



_{High speed scheduling}

algorithm

to reduce the inter-cell

interference



_{RRU Co-cell}

_{to largely reduce}

hand over

Excellent Performance in high-speed coverage:

Seamless User Experience in High Speed

Scenario

Experience

+



_{High speed: up to}

_{431 Km/H}



_{Handover success rate:}

_>99.5%



_{Handover interruption latency.}

100ms



_{Average DL rate for single UE:}

>20Mbps◎120Km/H

8 eNodeBs, 11 cells, 20km

Shanghai Meglev Train

Data Rate for Single UE @ 120 Km/H

Cell coverage

In shanghai HQ

(32)

Heavy Load

Heavy

Load HeavyLoad

LTE

GSM/UMTS

PS connectivity



Cell Reselection



PS Handover

LTE

GSM/UMTS

CS connectivity



CS Fall back (CSFB)



SRVCC

Initial Phase

Developing Phase

Developed Phase

Coverage-based

Handover

Coverage-based

Handover

Service-based

Handover

Service-based

Handover

Load-based

Handover

Load-based

Handover

Coverage-based

Handover

Coverage-based

Handover

Load-based

Handover

Load-based

Handover

Coverage-based

Handover

Coverage-based

Handover

Service Continuity with Inter-RAT Interworking

(33)

LTE Voice Service Continuity

Initial Phase: Data

only

Migration Solution: CS Fall

Back

Target Solution: VoIP +

SRVCC

LTE Access LTE Core PS Data LTE Access LTE Core 2G3G CS Core Voice PS Data If Voice

CSFB

VoIP PS Data CS Voice

Legend:

IMS

VoIP Over HSPA VoIP

over LTE _Voice

Internet Internet

Experience

+

Experience

+

2G3G CS Core VoIP Voice 2G3G PS Core 2G/3G Access Internet LTE Core LTE Access 2G/3G PS Core HSPA Access 2G/3G Access

SRVCC

PS HO

(34)

Cost-Effectiveness Solution

Power

Savin

g

Green eNodeB



_{Dynamic Tx ON/OFF}



_{Dual-band Intelligent}

Shutdown



_{Dynamic PA Voltage}

Adjustment

Networ

k

Sharing

Site Cost

Saving

Operatio

n

Efficiency



_{Ultra coverage solution}



_{Flexible site solution}

Green Site Solution

SON



_{More Automatic Planning}



_{Self-Configuration}



_{Self-Optimization}



_{Self-Maintenance}

2

1

3 

_{Dedicated Carrier RAN}

Sharing



_{Common Carrier RAN}

Sharing

LTE RAN Sharing

4 TCO

Saving

(35)

8XMacro:

Macro Site Solution

_{Distribute Site Solution}

• Multi-band/Multi-mode/MIMO

• _{Smallest RRU: <15 kg}

RRU 2.6GHz 2.6GHz 1800/2100MHz 800/900MHz BTS3900L 800MHz 900MHz 2100MHz 1800MHz G_LG_LG_LU_LU_LU_L L T E L T E L T E G U G U G U

RRU

• _{5 Bands, 3 Modes}

@

_{1 cabinet}

• _{No combiner, no insert loss}

Cost Saving with Flexible Site Solution

Centralized installation

Close to antenna

3MRRU

+

(36)

Dynamic Tx Configuration

Power Consumption Saving by Green eNodeB

Dual-band Intelligent

Shutdown

• Power off F2 during low load

Dynamic PA Voltage

Adjustment

PA2 PA1

Power off

PA2 during

low load

>15%

power consumption saving

F2: hot spot F1: seamless coverage

• Power on F2

when load

increasing

>20%

power saving at hot

spot

• Dynamically adjust PA

voltage according to

output power,

modulation mode, etc.

• 5%

PA Efficiency

Improvement

2009 2010 2011

16%

11%

P o w e r C o n s u m p ti o n

eNodeB Power Consumption:

>10%

Y-o-Y

(37)

SON Improving Operation Efficiency



LTE SON Trial in

T-Mobile Austria



ON

Planning Phase Deployment Phase Maintenance Phase Optimization Phase Inventory Management Sleeping Cell detection Antenna Fault Detection Cell/interface/sub. trace Automatic Network Planning

Automatic Config. Planning Automatic Parameter Planning

Automatic PCI/TA Optimization Automatic Neighbor Relation Inter-RAT ANR,MRO, System Load Balance, RACH Optimization

Self- configuration (Plug & Play) Auto Software Management

Test scenari o Handover success rate Total automatic added neighbors Round 1 91% 74 Round 2 97% 94

M I S S

• M

inimize

Configuration

• I

mprove

Network KPI

• S

horten

Expertise Education

• S

implify

Network management

(38)

Typical SON Features at Initial Stage

MLB

: Mobility Load Balancing

ANR

: Automatic Neighbor

Relation

Self-Config.:

Quick

Deployment

• Save cost & Improve exactness

• Avoid first HO failure due to missing neighbor relation

New

• Optimizing cell reselection and handover parameters

• Reduce call drop rate, handover failure rate, • Reduce unnecessary redirection

MRO:

Mobility Robust

Optimization

unnecessary HO Rate HO successful rate V alu e eNodeB EMS + DHCP File Server Config Config Config S/W Config S/W • More reliable

• Improve network KPI by HO optimization • Plug & Play Installation

• Shorten deployment duration

Cell A Cell B Cell C

Cell C Cell B

Cell A

(39)

40% Saving with RAN Sharing Solution

Supporting both MOCN and dedicated carrier RAN

MOCN

Common Carrier RAN Sharing

Sweden

Dedicated Carrier RAN Sharing

Poland

eRAN Sharing

Carrier Shared

Tele2

Telenor



Aggregated Spectrum for High Bandwidth



_{Site reduction for rural coverage}



_{Shared FM/CM, partly Independent PM}



Shared optimization and expansion



_{UE compliant to 3GPP R8}

Mobyland Centern et F1/F2 f1/F2 F1/F2

f1

f2



_{Independent Service Deployment}



_{Independent PM/FM/CM (cell level)}



Independent expansion



_{Shared optimization}



_{No requirement for UE}

(40)

(41)

SDR Facilitating Smooth Evolution

Technolo

gy

800M

900M

1800M

2100M

2.6G

GSM

UMTS

GSM+UMTS

GSM+LTE

LTE

mRRU

_MRFU

SDR

_SDR

GSM

2600MHz

LTE

2100MHz

UMTS

1800MHz

GSM

900MHz

800MHz

2010

2011

2012

LTE

UMTS

GSM



_{Spectrum refarming}

_{starts from}

900M/1800M, which can be utilized for LTE

deployment.



_{SDR technology supports}

_{flexible and}

smooth transition

from 2G/3G to LTE.

(42)

Software

upgrade

GL Refarming Solution

-- Supporting Smooth Evolution from GSM to LTE

GSM

GSM+LTE

_GSM+LTE

LTE

LTE MIMO L T E L T E L T E G S M G S M G S M G L G L G L LTE Board



Significant cost-saving without acquiring new spectrum license



Software upgrade for smooth evolution from GSM to LTE, protecting

investment

LTE GSM LTE MIMO

MRRU

• 900M/1800 M •_{2*2 MIMO}

MRFU

• 900M/1800 M •_{2*2 MIMO} LTE GSM LTE LTE GSM GSM Power F A N _LBBP GTMU_LMPT _Power Power F A