LTE-Advanced Technology Overview v1.0 - Huawei

8/11/2019 LTE-Advanced Technology Overview v1.0 - Huawei

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Pa e 1

Huawei LTE-Advanced Overview



Contents1 LTE-A Requirements and 3GPP schedule

2 LTE-A Features and Progress

3 Huawei LTE-A Development Plan



HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential

LTE-Advanced: Evolution for Future

Peak: 150MbpsEfficiency: 1.7bps/Hz

OFDMMIMO64QAM

……

Smart Phone4B Connection

Smart Device

50B ConnectSmart Device + M

10B Connection

Peak: 1GbpsEfficiency: 3.7bps/Hz

Carrier Aggregation 40M, 60M,80M…… High-order MIMO: 8*8RelayHetNetCoMP

Peak: 5GbpsEfficiency: 6.4bps/H

LTE……3GPP R12~

LTE-Advanced3GPP R10~

LTE3GPP R8~




LTE-A: Quantitative RequirementsMetrics IMT-

AdvancedRequirement

LTE-FDDPerformance

LTE-Adva(3GPP TR 3

DL peak spectrum efficiency (bps/Hz) 15 16.3 (MIMO 4x4) 30 (MIMO 8

UL peak spectrum efficiency (bps/Hz) 6.75 3.75 (SIMO 1x2) 15 (MIMO 4

Supported bandwidth > 40MHz Up to 20MHz Up to 100MHz

DL average cell spectrum efficiency (bps/Hz) 2.2 1.7 (2x2) 3.7 (4x4)

UL average cell spectrum efficiency (bps/Hz) 1.4 1.5 (1x4) 2.0 (2x4)

Control plane idle-to-connected latencyControl plane dormant-to-active latencyUE plane latency

1001010

8011.54

5010Improved fr

VoIP capacity (UE / MHz) 30-50 40 60


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LTE-A Schedule in 3GPPLTE Rel8

(officially freezing )ASN.1frozen

07/12 08/12 09/12 10/12 11/12

LTE Rel9(functional freezing) ASN.1frozen

LTE-A SI

LTE-A Rel10(core completion)

ASN.1

frozen

Rel11(stage 1)

Rel11(stage 2)

Re(stag

Larger spectrum

assets and highpeak rates

DL 8X8 MIMOUL 4X4 MIMOCarrier AggregationRelayeICIC

Further cell averedge thro

CA EnhanDL/UL C

Enhanceme……


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Huawei Contribution to the LTE Industry

230+ approved contributions to 3GPP LTE RANStandard since 2010, ranking No.1 contributor.

Source: 2011Q3

Huawei has signed cross-license with all major IPR holders:

The Rapporteurship for 6 Study IItem of LTE-A in 3GPP, leading Lstandardization:

LTE-A R10: UL MIMO, MBMLTE-A R11: UL CoMP, AAS,

Submitted 380+ LTE essential ranking No.1 among wirelessinfrastructure vendors.

LTE Core Specification in 3GPPApproved Contributions )









Intra-CA : R10

Carrier Aggregation

Scenario B: Intra-Band, Non-C

Scenario A:Intra-Band, Co

Scenoria C: Inter-Band, Non-C

Band 1

LTE Carrier 1 LTE Carrier 2

Combined LTE Carrier 1 and LTE Carrier 2

LTE-A Carrier

Band 1

Operator 1 LTECarrier 1


Combined LTE Carrier 1 and LTE Ca

Operator 1 LTE-A Carrier


Band 1

LTE Carrier 1

LTE Carrier 1 in Band 1 Combined LTE Carri

LTE-A Carrier

• Provide 300~752Mbps(2X2 MIMO) at 40~100MHz bandwidth or

>1Gbps(4X4 MIMO) peak data rate

• Increase user data rate and system spectral efficiency

• Improve user experience( latency, etc..)

Benefits

Provide 1Gbps in100MHz using 4X4 MIMO





HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 10

CA Application Scenarios

Same Coverage Senario

S1F1 F2

Coverage and throughput

Balancing Scenario

S5RRH scenario

S4

Cell edge user scena

Capacity Coverage

S2

Repeater Scenario

C o- l o

c a t e

R em

o t e






MIMO :Performance-UL

Ant. Config. LTE-ATarget Huawei*

1x2 SIMO 1.2 1.1977

2x4 SU-MIMO 2.0 2.1457

Average spectrum efficiencies [bps/Hz/cell]

Cell-edge user throughput [bps/Hz/cell/user]

Ant. Config. LTE-ATarget Huawei*

1x2 SIMO 0.040.03685

2x4 SU-MIMO 0.07 0.08048

Huawei Views:

From spectrum efficiency point of view, all Uplink MIMO configurations satisfy LTE-Arequirement, 2T is sufficient

* Huawei results came from internal simulation.






CoMP DL R11

Benefits:• Interference from other transmission points is utilized to

improve transmission

Improve SNR

Reduce inter-cell-interference

DownlinkCoMP

Intra-eNBCoMP

Inter-eNBCoMP

Features

UplinkCoMP

*CoMP has been discussed since Mar. 2008, and i t s

SI has been delayed t o later than Dec. 2010

X2

A

AP

AP

AP

AP

eNodeB

UE

UE

Intra-eNB CoMP




R11 DL CoMP – Scenario1&2Scenario 2:Homogeneous network with high Tx p

Scenario 1:Homogeneous network with intra-site CoMP

Scenario 1(intra-site 3 cells JP)

Scenario(inter-site 9 ce

Cell capacity gainCell edge [5%]

user gainCell capacity gain Cell e

4TX 21.60% 31.63% 19.26% 2TX 31.64% 55.88% 31.25%

Benefits




UL Intra-eNodeB CoMP enhance UL Throughput

* Simulation assumption: 10MHz

T h r o u g h p u t

( M b p s )

Cell AveargeThroughput.

CTh

7% Increase WW

10%

• Gain for UE1: Co-demodulated.• Gain for UE2: Interference (UE1) Rejection.

UL Intra-eNB CoMP Secures LTE User Consistent QoE

No CoMP

Intra-eNB CoMP

Intra-eNB CoMP Legend

UL CoMP w/t Co-demodulation &Interference Rejection

Benefits




Challenges of CoMP

Huawei Views:

DL CoMP and UL inter-eNB CoMP requires for standard specification (R11 or beyond)

UL intra-eNB shown promising performance benefit without specific standardization work.

CoMP application is uncertain

• DL CoMP and UL inter-eNB

CoMP still under SI stage

• CoMP application is uncertain

Complex to Implement

• Backhaul capacity, transmis

latency, synchronization

• Introduce special requirements

UE




HetNet ( LPN to solve the capacity problem)

Macro

Micro MicroMacro

Macro

Micro

FemtoMicro

LPN: Low Power Node

1 - 5x 10 - 50x 100 -

Micro P ico

Femto

Macro Macro Macro

WiFi

Telecom architecture becomes Flat … Radio network becomes H




Hot Spot Identify

Find the hotspot by traffic map

• Visible and Accurate• Based on real-time traffic statistic

Network planning by SINR

• Add more small cell in Macrocoverage considering RSRP

• Accurate planning maximizingcapacity

Traffic M

Events M

Coverag

Accurate Hotspot Events Analysis Planned NetworkPrecise




Interference Mitigation (eICIC)

• More Cell-Edge UEs , More Intereference, More block

• Interference control by Mother-Child Sites

• Adaptive ICIC, eICIC, CoMP ……

Interference analysis

Signal Interference

eICIC

CoMP(CBF/CS, JP)

Protec

Beamforming




Het-Net Evaluation

Pico Num. 4 Pico 6 Pico 8 Pico 10 Pico 12 PiGain of cell group averagethroughput 378.8% 511.7% 648.4% 746.0% 822.8

Gain of cell edge throughput 108.1% 164.0% 237.6% 307.8% 357. 9

• Configuration 1 19*3cells, Macro 46dBm/ 500m ISD, Pico 30 dBm. No ABS & CRE

378.84%

108.11%

511.75%

164.00%

648.39%

237.64%

746.03%

307.76%

822.75%

357.89%

918.56%

422.13%

974.46%

458.95%

1034.12%

504.78%

1120.49%

573.70%

0.00%

200.00%

400.00%

600.00%

800.00%

1000.00%

1200.00%

4 Pico 6 Pico 8 Pico 10 Pico 12 Pico 14 Pico 16 Pico 18 Pico 20 Pico

Gain of cell throughputGain of cell









eRAN6.0*eRAN3.03GPP Release 10

High Performance• Intra-band CA(2 CC)• DL 4*2 MU-MIMO• Advanced Receiver• HetNet eICIC

Support for New Service• eMBMS(Basic)

3GPP Release 10

High Performance• UL Intra-eNB CoMP

eRAN7.0**3GPP Release 11

High Performance• DL intra site CoMP• Inter-band CA(2 CC)• UL 2*2/2*4 SU MIMO• Relay

Support for New Service• Offload LIPA• Offload SIPTO

eRA3GPP Relea

High Perfor• DL inter sit• CA(> 2CC)• Advanced M• DL 8*8 MU• UL 4*4 SU

2012Q2 2013Q1 2014Q1 2015

LTE-A Roadmap

* Under discussion for eRAN6.0** Be subject to eco-system progress after eRAN6.0




Smooth Evolving from LTE to LTE-A

Pa e 24

A High Order MCoMP

rotecting LTE network investment Excellent forwards compatibility

Intra-eNB CoMP: SoftwareupgradeInter-eNB CoMP: Softwareupgrade,needs adding transport LBBPcards because transportprocessing increased.

needs adding transport LBBP cardsbecause transport processingincreased



Thank youwww.huawei.com

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LTE-Advanced Technology Overview v1.0 - Huawei