C-RAN: the Next Big Thing after LTE
China Mobile Research Institute
2
Agenda
China mobile’s solution: C-RAN
Challenges in mobile internet era
Proposals for collaboration with Agilent
C-RAN progress
3
Challenges in Mobile Internet Era
Fast increasing data traffic but slow capacity growth
Mobile network capacity will only increase by 10 timesMobile data traffic will i
ncrease by 26 times
Gap
1 Exabyte = 1018 Byte
*Source: Cisco VNI Mobile, 2011
4
Challenges in Mobile Internet Era
2G 3G LTE
Construction Cost !Inter-cell Interference !
5
BS cell site is the major source of power consumption.
Challenges in Mobile Internet Era
*Source: Base on China Mobile survey on commercial networks
6
Agenda
China mobile’s solution: C-RAN
Challenges in mobile internet era
Proposals for collaboration with Agilent
C-RAN progress
7
C-RAN: Road towards green radio access network
RRU
RRU
RRU
RRU
RRU
RRU
RRU
Virtual BS PoolVirtual BS Pool
OpticalNetwork
Centralized baseband pool
real time Cloud computing
Collaborative radio
Clean system target
8
C-RAN——Centralized Baseband Pool
Traditional macro base-stations
Distributedbase-stations
C-RAN Centralized baseband pool
9
C-RAN——Collaborative Radio
interference
interferencesignal
signal
signalsignal
Joint-processingSeparately processing
10
C-RAN——Real-time Cloud Computing
TD-LTE
TD-SCDMA
GSM
Traditional baseband equipmentsSoftware Defined Radio
based onVirtualized Cloud Platform
GSMGSM
TD-SCDMATD-SCDMA
TD-LTETD-LTE
App
Service
App
Service
11
71%
29%
saved
C-RAN——Clean System Target
01020304050
Macro BS C-RAN
Power consumptionreduced by at most 71%
Construction cost per sitereduced by 1/3
*Source: Base on China Mobile field trial surveys
12
Agenda
China mobile’s solution: C-RAN
Challenges in mobile internet era
Proposals for collaboration with Agilent
C-RAN progress
13
C-RAN Roadmap
Centralization DeploymentCentralization Deployment
2010 2011 2012
Near Term:Address the fiber
resource and management challenge
Mid-Term:Address the SDR and Collaborative Radio
challenge
Long Term:Address the real-time
cloud challenge
Multi-mode and Collaborative RadioMulti-mode and Collaborative Radio
Virtual BTS on real-time CloudVirtual BTS on real-time CloudC-RAN ResearchData traffic analysisBBU pool research
C-RAN ResearchData traffic analysisBBU pool research
Expend C-RANto 2G/3G/4Gnetworks
Expend C-RANto 2G/3G/4Gnetworks
Drive CoMP research and field trial, pre-commercial product
Drive CoMP research and field trial, pre-commercial product
Commercial product development
Commercial product development
We are here
2013 2014 2015
14
Prototype Development
Multi-standardGPP prototype
Large-scaleBaseband pool
15
C-RAN Field Trial
DongguanTD-SCDMA
Zhaotong GSM
ChangshaGSM
BaodingGSM
JilinGSM
GuangzhouG/T/L (on going)
BeijingG/T/L (on going)
C-RAN Trials in China
C-RAN Trials in China
ZhuhaiTD-SCDMA
16
International Collaboration
17
Agenda
China mobile’s solution: C-RAN
Challenges in mobile internet era
Proposals for collaboration with Agilent
C-RAN progress
18
Collaboration with Agilent
SDRResearch
SystemMeasurement
Baseband verification RF specification testing Channel simulation
Physical layer acceleration L2/L3 signal scheduling Real-time operating system
19
C-RAN PoC Test (with GSM/TD-SCDMA/TD-LTE)
Uplink signal sensitivity
EVM/Freq. offset/ phase noise of downlink signal
Consistency of multi-port signals
Beam-forming test
CPRI signal test, e.g. time synchronization
channel simulation
……
20
Summary
C-RAN is to address the challenges in the mobile internet era.
Agilent could play an important role in C-RAN test.
Collaboration makes win-win!
Thank you!