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HUAWEI TECHNOLOGIES CO., LTD. All Rights Reserved
Cloud RAN Introduction
Huawei
The 4th CJK International Workshop Technology Evolution and Spectrum
September 6th, 2011, Bundang, Korea
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The 4th CJK International WorkshopSeptember 6th, 2011, Bundang, Korea
All Rights Reserved by HUAWEI Page 2
Outlines
Background
Network Architecture Evolution
Cloud RAN Key Challenges Studies
Scenarios of Cloud BB Deployment
Summary
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The 4th CJK International WorkshopSeptember 6th, 2011, Bundang, Korea
All Rights Reserved by HUAWEI Page 3
Background
Cloud Computing has become a hot topic on the Ifor IT industrial magnates such as Microsoft and
As a result, they are boosting their data services atailored applications.
Wireless networks today need to supply not only services, email, Video, Gaming and GPS, but alsooriented service extensions. The number of voiceand mobile broadband users will significantly incdue to the HSPA Evolution and LTE/-A technologmeet this trend, mobile operators must pay full atto future development strategies and ways to saveTotal Cost of Ownership (TCO).
Can Cloud Concept be used in Wireless netHow to use?
Email Video TV Video Gaming GPSPersonal
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The 4th CJK International WorkshopSeptember 6th, 2011, Bundang, Korea
All Rights Reserved by HUAWEI Page 4
Outlines
Background
Network Architecture Evolution
Cloud RAN Key Challenges Studies
Scenarios of Cloud BB Deployment
Summary
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The 4th CJK International WorkshopSeptember 6th, 2011, Bundang, Korea
All Rights Reserved by HUAWEI Page 5
Network Architecture: MBB Evolution Concept Direction
SingleRAN, 5 band 3 mode in 1 site HetNet: Pico/Micro + MacroSmall cell offload
Flat architectuCloud BB
MacroFemto
Pico
Femto
Micro
Femto
Micro RRU
Now Next Ex
Macro
BSC
P-S GW/G
BSC/RNC
Internet
P-SGWGGSN
SGSNMME
EPCP-S GW/GSN MME/SGSN
BSC/RNC
Internet
EPC
IP
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The 4th CJK International WorkshopSeptember 6th, 2011, Bundang, Korea
All Rights Reserved by HUAWEI Page 6
Outlines
Background
Network Architecture Evolution
Cloud RAN Key Challenges Studies
Scenarios of Cloud BB Deployment
Summary
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Page 7The 4th CJK International WorkshopSeptember 6th, 2011, Bundang, Korea
All Rights Reserved by HUAWEI
TCO nalysis required
7BBU 19BBU 37BBU 91BBU
BBU location
Assumption:500m cell radius
4 Types of BBU :
Cost expendi ture
Fiber leasing cost
Fiber civil work cost
Appl ica t ion sc enar io
Legacy network change to BBU installation
New build network (eg. LTE)
Site rental saving
Site rental saving
Site visit cost saving
Network Configuration
UMTS S1/1/1
UMTS S2/2/2
LTE S1/1/1 20MHz
Transport Resource requirement
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Page 8The 4th CJK International WorkshopSeptember 6th, 2011, Bundang, Korea
All Rights Reserved by HUAWEI
Current limitation and suggestion
For operators with abundant optical fibers, BBU center solution can be deployed, otherwise the cost will be high
One access loop, ten BTS One Aggregation Ring,fifteen Access Rings
Backbone Lab CoNew site
Macro BTS w/equipment room
Short distance, no loopprotection
Backbone Lab CorNew site
BBU center i
R
R
U
R
R
U
R
R
U
R
R
U
R
R
U
R
R
U
R
R
U
R
R
U
R
R
U
R
R
U BBU
Site with LegacyMacro BTS equipmentroom
long distance, loopprotection needed
Aggregation Lab
One Backbone Ring, sixAggregation Rings
One Aggregation Ring,
fifteen Access Rings
One Backbone Ring, sixAggregation RingsAggregation Lab
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The 4th CJK International WorkshopSeptember 6th, 2011, Bundang, Korea
All Rights Reserved by HUAWEI Page 9
Outlines
Background
Network Architecture EvolutionCloud RAN Key Challenges Studies
Scenarios of Cloud BB Deployment
Summary
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Page 10The 4th CJK International WorkshopSeptember 6th, 2011, Bundang, Korea
All Rights Reserved by HUAWEI
Access Ring Aggregation Ring
BB Cloud~10 Site, 5~10km2
Scenario of Cloud BB Deployment
BB Cloud
Macro + SmallCell
Scenario 1 20%~50% capacity Increase bScenario 2
~90% Equipment room saved 51% TCO decreaseScenario 3
Scalable to 200 BBUs
WDM
Scenario 1
Scenario 2 Scenario 3
More
F i b
er r e
q u e s t
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Page 11The 4th CJK International WorkshopSeptember 6th, 2011, Bundang, Korea
All Rights Reserved by HUAWEI
Cloud BB Improve HetNet Capacity by Interference Mitigation
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
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Page 12The 4th CJK International WorkshopSeptember 6th, 2011, Bundang, Korea
All Rights Reserved by HUAWEI
Outlines
Background
Network Architecture EvolutionCloud RAN Key Challenges Studies
Scenarios of Cloud BB Deployment
Summary
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The 4th CJK International WorkshopSeptember 6th, 2011, Bundang, Korea
All Rights Reserved by HUAWEI Page 13
Summary
Because the wireless network performance benefit will come from BB pool
solution for LTE-A, and cloud computing BB pool is far from commercialapplication, the proper time for ultimate Cloud-RAN may be LTE volume
construction
From the current Technology and Application limitation, the Mother-Child Sites
deployment is the best one of Cloud RAN scenarios for improving capacitybased on interference control
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Thank youwww.huawei.com
Copyright2009 Huawei Technologies Co., Ltd. All Rights Reserved.