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Huawei Mulit-technology Single Ran - System Requirements and Solutions
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HUAWEI TECHNOLOGIES CO., LTD.
47pt
www.huawei.com
Mulit-technology Single
RANs – System
Requirements and
Solutions
Jena Michael Lemke, PhD
May, 9th 2008
HUAWEI TECHNOLOGIES CO., LTD. Page 2Huawei Confidential
HUAWEI TECHNOLOGIES CO., LTD. Page 3Huawei Confidential
WIMAX
38Networks
Worldwide
UMTS
86(Contracts)
No.1 in 2007
CDMA
240(Operators)
No.1
Softswitch
470M+(Subscribers)
No.1
GSM
700K+(TRXs in 2007)
Top 3
� USD 7 billion contract sales in 2007
� Commercial contracts: 86 UMTS/HSPA, 65 EVDO, and 12 WiMAX
� GSM 700K TRXs shipment in 2007, account for 21%%%% market share
Achievements in 2007
HUAWEI TECHNOLOGIES CO., LTD. Page 4Huawei Confidential
Preface
HUAWEI TECHNOLOGIES CO., LTD. Page 5Huawei Confidential
Future Wireless Network
Vision of Service
Features of Service
Features of Future Network
Ultra-high
data rate and
low latency
Enhancing User
ExperienceUbiquity
Low cost
All IP
Network
HUAWEI TECHNOLOGIES CO., LTD. Page 6Huawei Confidential
The HSPA brought fast growth in
data services, network value has
been improved sharply.
Launch HSPA
OFDM/MIMO/AAS
IS95
CDMA2K
CDMA2K
Evolution
1995 2000 2005 2010+
~14.4kbps 144kbps 384kbps 50Mbps 100Mbps
802.16d
WiMAX
2.4GHz
WLAN
5.8GHz
WLAN
802.16e
WiMAX
GSM
WCDMA
WCDMA
Evolution
1G
(Analog)
Bandwidth Improvement : Key
techs & smaller coverage
E2E IP: IP core & IP Transmission
Service Transformation Demands Wider Bandwidth
HUAWEI TECHNOLOGIES Co., Ltd. Page 7HUAWEI Confidential
Evolution to Future Technologies
2007 201020092008
HSDPA
DL:14.4Mbps
UL: 384kbps
HSUPA
DL:14.4Mbps
UL: 5.76Mbps
HSPA+
DL: 40Mbps
UL: 10Mbps
LTE
DL: 100Mbps
UL: 50Mbps
GSM
GSM phase out?
UMTS
Spectrum
� Broadband era requires more bandwidth
� Technology neutrality within the available spectrum
� Multi-technology co-existence / multiple migration options / paths
WIMAX / LTE
>1Gbps
2015 2020
LTE + +
Performance
HUAWEI TECHNOLOGIES CO., LTD. Page 8Huawei Confidential
The Challenge(s)
HUAWEI TECHNOLOGIES CO., LTD. Page 9Huawei Confidential
Operator challenges in this evolution?
Operator
Multi-standard
vs Cost Efficiency
Growing Traffic ≠≠≠≠
Growing Income
Quality and Performance
Customer Expectations
HUAWEI TECHNOLOGIES CO., LTD. Page 10Huawei Confidential
Single RAN : Managing the challenges!
Convergence� Equipment Level
� Component Level
� Transmission Level
Advantages
� Flexible Business Plan
� Fast Deployment on
Demand
� Sharply reduced OPEX
� Outstanding Performance
� High Reliability
Single RANGSM / UMTS / HSPA / LTE
GSM Expansion
Current GSM Network
• GSM Expansion Pressure
• UMTS Roll-out Pressure
• LTE is Approaching
Backhaul
UMTS/HSPA Introduced
LTE in the coming future
Current
Disadvantages
� High CAPEX
- Buy systems separately
- Deploy systems separately
� High OPEX
- Operate systems separately
- Maintain systems separately
� Performance Down
- Bad intersystem coordination
- High intersystem interference
� Reliability Down
- Fault point & risk increasing
- Hard for trouble shooting
Core Network
HUAWEI TECHNOLOGIES CO., LTD. Page 11Huawei Confidential
Requirements for Vendors
HSPA+2009 onwards
2008
LTE2010 onwards
WiMAX 1.02007
UMB ?2009 onwards
2009 2010
WiMAX 2.0 (16m)2011+ onwards
WiMAX 1.x2009 onwards
Time to Market2007
• Clear solution & roadmap
• The same platform & all IP network architecture should be adopted all RAN technologies
Industry consensus on 4G technologies timeline to market
IP Core
WiMAX BTS
WiMAX BTS
ASN-GW
IP Core
eNodeB
eNodeB
SAE-GW
HUAWEI TECHNOLOGIES CO., LTD. Page 12Huawei Confidential
Key Radio Technologies Requirements
①①①① System to be 20MHz capable
• 2G/3G: Multi-TRX / Multi-Carrier
•16e: currently main focus on mandatory 5/10MHz, 20MHz optional
• LTE: 20MHz mandatory (+scalability)
System Requirements
• Radio Unit: wide broadband RF technologies, 20MHz support
• Baseband Unit: 20MHz processing capability
high transmission
power required
②②②② More transmission power needed: high efficiency Power Amplifier
③③③③ Advanced multiple antenna technologies for additional gain
System Gain (dB) = EIRP (dBm) –
RX Sensitivity composite (dBm) +
Antenna Configuration Gain (dB) +
Cyclic Combining Gain (dB)
advanced
antenna required
Wider channel size,
lower sensitivity
HUAWEI TECHNOLOGIES CO., LTD. Page 13Huawei Confidential
High efficient Power Amplifier
P
C
λλ λλ/4
In
OutDoherty•Up to >30% power efficiency
FF Linear RegionRF Output (dBm)
RF Input (dBm)
0 +5 +10 +15 +20
Saturation
Saturation
DPD Linear Region
A’
A
Linear characteristics of FF and DPD
DPD advantages
• Better linearity than FF
• Higher efficiency than FF
• PA determines volume, weight, power consummation which directly influence CAPEX
• Doherty & DPD PA should be adopted in initial network deployment
HUAWEI TECHNOLOGIES CO., LTD. Page 15Huawei Confidential
Advanced Multiple Antenna Technologies
4T4R MIMO-Beam Forming2T4RAntenna Configuration
4~6dB
Downlink
-
Downlink
Additional Gain Compared to
2T2R
2~4dB2~4dB
UplinkUplink
Additional Gain from 2T4R & 4T4R MIMO-BF technologies
• 2T4R and 4T4R could be the main stream for future 4G technologies
• Capability for future advanced multiple antenna technology evolution
DL: 2x2, 2x4, 4x2, 4x4 MIMOUL: 1x2, 1x4, 2x2, 2x4 MIMO
DL: 2x2, 2x4, 4x2, 4x4 MIMOUL: 1x2, 1x4, 2x2, 2x4 MIMO
DL: 2x2, 2x4, 4x2, 4x4 MIMOUL: 1x2, 1x4, 2x2, 2x4 MIMO
MIMO Configuration
802.16m/Mobile WiMAX
R2
Source: IEEE 802.16m
3GPP2 UMB
Source: CDG
3GPP LTE
Source: 3GPP TR 25.913Feature
IMT-Adv.(4G) Candidates Multiple Antenna Configuration Requirements
3dB Output gain means, 120% Radius gain, 140% Coverage gain & ~30% Sites reduction
HUAWEI TECHNOLOGIES Co., Ltd. Page 16HUAWEI Confidential
Solutions
HUAWEI TECHNOLOGIES Co., Ltd. Page 17HUAWEI Confidential
Single RAN starts in NodeB
� Distributed architecture
� Zero footprint� Digital Multi-
Carrier PA
� High-performance
HSDPA
Huawei Base S
tation Evolution
R1
R2
R3
BBU
RRU
� G/U/LTE/Wimax Co-platform
� Multi-carrier
� All IP
� Green
R4
indoor outdoorBBU
RRURFU
DBS
Uni-BTS
Now
Evolution brings simplicity and multi-technology support
HUAWEI TECHNOLOGIES Co., Ltd. Page 18HUAWEI Confidential
Base Band Unit
Radio Remote Unit
GSM GSM+UMTS UMTS+LTE
Software upgrade to support new technologies or additional capacity
2G3G2G 3GLTE
Now FutureAntenna
BBU
Active
Antenna
Single RAN by Software Defined Radio
HUAWEI TECHNOLOGIES Co., Ltd. Page 19HUAWEI Confidential
Single RAN High Efficiency Broad-Band
PA technology reduce OPEX
DPD+
A-Doherty
1500W
power consumption 800W
S1/1/1, Typical Configuration
Previous
Industry
Standard
Indoor
Macro
Huawei
Indoor
Macro
Huawei
DNBS
400W 520W
73% saving 35% saving
Previous
Industry
Standard
Outdoor
Macro
Huawei
Outdoor
Macro
590W
60% saving
HUAWEI TECHNOLOGIES Co., Ltd. Page 20HUAWEI Confidential
Example: WiMAX Network Switching to LTE
CSNIP Bear Network
ASN-GW
HA
DHCP server
MME
New MME
added
Software
Upgrade to
SAE-GW
SAE-GW
eNodeB
Software
Upgrade to
LTE
Software
Upgrade to
LTEeNodeBWiMAX
BS
WiMAX
BS
Purely software upgrade to protect investment
• Same Base Station platform for WiMAX & LTE
• Same GW platform for WiMAX & LTE
HUAWEI TECHNOLOGIES Co., Ltd. Page 21HUAWEI Confidential
Radio Unit Switching Examples
2x10MHz WiMAX20MHz LTE (TDD)
10MHz WiMAX
10MHz LTE
Multiple Carriers
WiMAX Radio Units
Dual Mode
Radio Unit
LTE(TDD) only Radio Unit
Software Upgrade
Software UpgradeSoftware Upgrade
• Multiple Carrier support, upgradeable to 20Mhz
• PA: >30%, DPD & Doherty based high output power
• Multiple antenna technologies: 2T4R/ 2T2R supported
HUAWEI TECHNOLOGIES Co., Ltd. Page 23HUAWEI Confidential
� Pure IP core and
interfaces, the way to
internet era
� Transmission savings
� Same footprint, 3
times capacity
� 50%+ Power
amplifier efficiency
� Smooth Evolution
� Power Saving
� Reduction of
auxiliary facilities
Easy Modernization and Evolution solution
Convergence Multi-carrier
All IPGreen
Uni-BTS
� G/U/LTE Co-platform
� Software upgrade to
future
� Smooth Evolution
1 2
34
HUAWEI TECHNOLOGIES CO., LTD. Page 24Huawei Confidential
Thank You!