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LTE TDD solution
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7/16/2019 Huawei LTE TDD CA Solution Overview
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HUAWEI TECHNOLOGIES CO., LTD.
LTE TDD CA:
Aggregation ImprovingExperience
7/16/2019 Huawei LTE TDD CA Solution Overview
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HUAWEI TECHNOLOGIES CO., LTD.
Content
Trend Values CSolution
Leading LTE-Advanced technology
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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
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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.
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HUAWEI TECHNOLOGIES CO., LTD.
Globally Deployed
60+LTE networks have been
commercial or trial CA.
According
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HUAWEI TECHNOLOGIES CO., LTD.
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
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HUAWEI TECHNOLOGIES CO., LTD.
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.
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HUAWEI TECHNOLOGIES CO., LTD.
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)
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HUAWEI TECHNOLOGIES CO., LTD.
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
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Content
Trend Values CSolution
CA: 1+1 > 2
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What’s the
VALUEof CA?
Double peak rate
That’s it?
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1 + 1 > 2, CA Improves Network Quality
Brand Effect Edge UserExperience
Cell CapacityExpanded
Quick ServiceResponse S
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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
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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
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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%↑
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HUAWEI TECHNOLOGIES CO., LTD.
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.
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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
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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
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Content
Trend Values CSolution
Huawei LTE TDD CA Solution Introduc
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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
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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.
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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.
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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
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Content
Trend Values CSolution
Globally Commercial
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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
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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
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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
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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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Copyright©2015 Huawei Technologies Co., Ltd. All Rights Reserved.
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financial and operating results, future product portfolio, new technology, etc. There are a number of factors thatactual results and developments to differ materially from those expressed or implied in the predictive statements. Theinformation is provided for reference purpose only and constitutes neither an offer nor an acceptance. Huawei mayinformation at any time without notice.
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