C-RAN: the Next Big Thing after LTE

China Mobile Research Institute

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Agenda

China mobile’s solution: C-RAN

Challenges in mobile internet era

Proposals for collaboration with Agilent

C-RAN progress

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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

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Challenges in Mobile Internet Era

2G 3G LTE

Construction Cost !Inter-cell Interference !

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BS cell site is the major source of power consumption.

Challenges in Mobile Internet Era

*Source: Base on China Mobile survey on commercial networks

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Agenda

China mobile’s solution: C-RAN

Challenges in mobile internet era

Proposals for collaboration with Agilent

C-RAN progress

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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

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C-RAN——Centralized Baseband Pool

Traditional macro base-stations

Distributedbase-stations

C-RAN Centralized baseband pool

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C-RAN——Collaborative Radio

interference

interferencesignal

signal

signalsignal

Joint-processingSeparately processing

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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

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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

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Agenda

China mobile’s solution: C-RAN

Challenges in mobile internet era

Proposals for collaboration with Agilent

C-RAN progress

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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

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Prototype Development

Multi-standardGPP prototype

Large-scaleBaseband pool

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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

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International Collaboration

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Agenda

China mobile’s solution: C-RAN

Challenges in mobile internet era

Proposals for collaboration with Agilent

C-RAN progress

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Collaboration with Agilent

SDRResearch

SystemMeasurement

Baseband verification RF specification testing Channel simulation

Physical layer acceleration L2/L3 signal scheduling Real-time operating system

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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

……

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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!