Huawei LTE TDD CA Solution Overview

7/16/2019 Huawei LTE TDD CA Solution Overview

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HUAWEI TECHNOLOGIES CO., LTD.

LTE TDD CA:

Aggregation ImprovingExperience




Content

Trend Values CSolution

Leading LTE-Advanced technology




Carrier Aggregation is Technology Trend

TDD+：

10Gbps

• Massive MIM

• 256QAM

• ……

LTE-Advanced：

1Gbps

• CA

• High order MIMO

• DL CoMP

• Hetnet

LTE：100Mbps+

• OFDMA

• TM8

• UL CoMP

Carrier Aggregation can provide a higher

rate, is the technology trend for LTE

evolution.

efficiency

40MHz

2*2

MIMO

4*4

MIMO

220Mbps p

us




CA Standard Development

Release 10 Release 11 Release

• Up to 100M Aggregation

• Intra/Inter-Band CA

• UE Category 6

• CA with CC of different

subframe assignment

• Band 41 CA

• TDD + FDD CA

• UL CA

• DL Massive CA

• Cat 6 UE starts to support 20+20M CA.

• A CA-capable UE can access to multiple CC for higher data rate.

• A CA-incapable UE can access one of the component carriers.




Globally Deployed

60+LTE networks have been

commercial or trial CA.

According




20MHZTDD

40MHZTDD CA

60MHZTDD CA

Unique Values for TDD Operator

3030

Mobily

Internux

Smart

Swift

Softbank

Globe

STC

Optus

CMCC

Intra-band CA is more economica

Baseband

R

F

Intra-band CA

• 1 RF

• Easy to

develop

Inte

• 2

Easy to provide higher rate

Most TDD opera

spectrum

AbundantSpectrum

HighPeakRate

Economical Device

112Mbps

220Mbps

330Mbps




CMCC Devotes to TDD CA Commercial

Mandatory Feature

Customize TDD CA Devices

Commercial lau

2.3G/2.6G 20+20M intra-band CA is mandatory

request from CMCC since 2014.

DL intra-band 2CC CA

Data devices

2.3/2.6G 20+20M CACommercial

smartphone

Band 38/39/40/41 CA

• CMCC’s is commercial launch

• CMCC is doing CA trial in mor

Huawei’s assistant.




World’s 1st Cat6 LTE-A Device E5186s

• Chipset: HiSilicon Balong720• LTE cat6

• LTE TDD & FDD/UMTS/GSM• LTE TDD CA up to 40MHz• 802.11ac/b/g/n

• VoLTE/CSFB/VoIP• SON

Type Frequency CA Band

E5186s-22a

LTE TDD 2600MHz

LTE FDD 2600/2100/1800/900/800MHz

UMTS 900/2100MHz

Band 38

20+20M

(Contiguous)

E5186s-61a

LTE TDD 2300MHz

LTE FDD 700/1800/2600MHz

UMTS 900/2100MHz

Band 40

20+20M/20+10M

(Contiguous)




Cat6 LTE-A Mobile WiFi E5786s

• Chipset: HiSilicon Balong720

• LTE cat6

• LTE TDD & FDD/UMTS/GSM• LTE TDD CA up to 40MHz• 802.11ac/b/g/n• SON

Type Frequency CA Band

E5786s-63a

LTE TDD 2300MHz

LTE FDD 2600/2100/1800/900/700MHz

UMTS 900/2100MHz

Band 4020+20M/20+10M

(Contiguous &

Non-Contiguous)

E5786s-63bs

(Trial)

LTE TDD 1900/2300/2600MHz

LTE FDD 1800/2600MHz

UMTS 900/2100MHz

Band 38 + 39

20+20M/20+10M



Content


CA: 1+1 > 2




What’s the

VALUEof CA?

Double peak rate

That’s it?




1 + 1 > 2, CA Improves Network Quality

Brand Effect Edge UserExperience

Cell CapacityExpanded

Quick ServiceResponse S




Values of CA 1: High Rate Building Brand Ef

40MHz Spectrum ≈ 220Mbps, helping TDD operator building ‘super fast

• More than 200Mbps peak rate in Telkom's

TDD commercial network.

• 20M+20M CA，2.3G band 40, 2T2R。

• Driving test throughput is s

improved by CA in CMCC H

• 20M+20M CA，2.6G band 4

20M TDD vs. 40M TDD




Values of CA 2: Edge User’s Rate 200%+

Normal UE

CA off

Carrier 1 Carrier 2

user1CA on

user2 user1 user2 us

• Spectrum: 2 times spectrum = 2 times rate

• Efficiency: user’s data can be scheduled in the RBs of best quality from 2 carr

higher frequency diversity gain.

Carrier 1




Values of CA 3: Cell Capacity Expanded

Frequency diversity gain improves cell average and cell edge user’s throughput.

Cell average throughput

5.6%↑

Cell edge user’s throughput

15.3%↑




Values of CA 4: Quick Service Response

CA off: 2 single lanes

user1

user2

serviceresponse delay

user1

CA on: two-lane

use

Reduce service

response delay

Channel multiplexing gain:

instantaneous capacity increa

• High probability to occupy the 2 carriers' bandwidth: 100% instantaneous cap

• Service response delay: significantly shortened reduces the give up due to wa

1

2

Sudden burst service isdistributed randomlyin time domain.




Values of CA 5: Sonic Load Balancing

User's data can be scheduled fast while keeping the flexibility on the 2 carriers it cam

each TTI. Comparing with MLB, it is more efficient.

Busy cellMore users

Lower experience

Not busy cellLess users

Higher experience

BS prefers to

send user's

data via the

not busy cell to

adjust loaddifference

between 2 CA

carriers.

CC1

CC2

Item MLB

Period x min

MethodScheduling after

handover

Signaling 14

Time delay long

Impact on user Fluctuant




Aggregation Spectrum into a Resultant Forc

1. Branding Effect

2. Edge User’s Rate Improved 200%+

3. Cell Capacity Expanded

4. Quick Service Response

5. Sonic Load Balancing

Multi-carrier



Content


Huawei LTE TDD CA Solution Introduc




Intra-eNodeB CA: the Most Common Scena

BBU3900/3910

Co-RRU Not

• Inter-board or intra-board

• Inter-RRU or intra-RRU

• Up to 4 TDD carriers

• Wide bandwidth RRU325x series: 1 RRU

supporting 4 cells.

2CC CA f 4 C i M ki CA M




2CC CA from 4 Carriers Making CA More

Flexible

A B

A C B

C

C

C

C

• eNodeBs can flexibly select carriers from

multiple carriers for aggregation.

• Cells of best signal for CA UE.




Architecture of CA in 3GPP

One PDCP and RLC entity for each bearer

Separate MAC layer data

Independent HARQ process

• RRC connection on PCC only: No more user license occupied.




CA Service: Quality Based, Data Demanded

Step1: eNodeB configures the cell meeting measurement criteria as the SCC of the

Step2: When the UE's traffic increases, the SCC is activated. Then, CA is implement

Step3: When the UE's traffic decreases, the SCC is deactivated, which can save the

Broadcasting

Measurement report(Event A4)

Carrier 2#

SCC

C



Content


Globally Commercial




Optus : 1st TDD CA Commercial NetworkDec 2013, Optus launched CA on its 2.3G LTE TDD netw

world's 1st LTE TDD CA commercial network.

220Mbps Peak Rate

CA E2E by Huawei

RRU3256

Super Wideband

IBW/OBW: 80M

4 Carriers

CPE E5186s

World’s 1st TDD CA device

HiSilicon Balong720

2.3G CA up to 40MHz




CMCC Beijing Launching TDD CA

CMCC Beijing launches TDD CA in Dongzhimen Demonst

Area, including indoor and outdoor coverage.

Indoor: 2.3G 40M

Outdoor: 2.6G 40M

Peak rate: more tha




Softbank’s 1Gbps Field Shocking Japan

June. 2014, Softbank showcased 3.5G 4CC CA on its' c

Network in Ginza Tokyo.

4CC CA × 4*4 MIMO = 1Gbps




Summary

1. CA is the trend of LTE network.

2. 1 + 1 > 2，CA Improves Network Quality and QoE

3. Huawei LTE TDD CA solution is widely accepted a

by global operators.



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Huawei LTE TDD CA Solution Overview