5G  Mobile  Communica0ons  in  China

Xiaohu  You  Professor  &  Director  

Na0onal  Mobile  Communica0ons  Research  Laboratory  Southeast  University,  P.  R.  China

Outline

•  Background  and  Recent  Research  Advances  in  China  •  Na0onal  High-­‐Tech  R&D  Program:  863-­‐5G  Project  •  Open  PlaSorm  and  Some  Enabling  Technologies  

3  

1G

2G

3G

4G

GSM,  cdmaOne(IS-­‐95)  

WCDMA,  TD-­‐SCDMA,  CDMA2000

LTE/LTE-­‐Advanced,  802.16m

2020：5G？

1980s  

1990s  

2010s  

2000s  

AMPS,  TACS  

FDMA

TDMA

CDMA

OFDM  +  MIMO

Roadmap  to  5G

M-­‐MIMO,UDN,NFV,  … Enabling  Techniques

New  ApplicaTons  

5G Application Scenarios & KPIs

Source:  IMT2020  (5G)  PG  

5G  Vision  &  Requirements

Source:  IMT2020  (5G)  PG  

China’s  AcTviTes ITU’s  AcTviTes

5G  Framework

Source:  CATR

5G’s  Possible  Evolu0on

Source:  CATR

5G  Spectrum  Issue

Source:  IMT2020  (5G)  PG  

Outline

•  Background  and  Recent  Research  Advances  in  China  •  Na0onal  High-­‐Tech  R&D  Program:  863-­‐5G  Project  •  Open  PlaSorm  and  Some  Enabling  Technologies  

10  

Phase 1

Phase 2

Phase 3

2013   2014  

Framework/RTT/Wireless  Net  

mmW/HetNet/NFV      

Core  Chips/Testbed  

Na0on  863  5G  Project  

2015  

National 863 5G Project (2013-2015）

Open  Calls  Schedule

Over  50  Par0cipants  from  Domes0c  &  Mul0-­‐Na0onal  En00es  

11  

863  5G  Project

Spectrum Requirements Enabling  Techniques IPR

5G  Innova0on  Alliance    

 FuTURE  Forum  

IMT-­‐2020(5G)  Promo0on  Group

Promo0on  Framework  (2013-­‐2015)

Int’l  Coop

Mission  of  5G SIG:

Integrate the 5G research on user

requirements, service applications,

spectrum, air-interface transmission, and

network architecture, coordinating cross

-layer research, analyzing and summarizing

progresses on technical research.

Vice Chairman: WANG Xizhi (HUAWEI) GUAN

Hao (Nokia) SUN

Chengjun (Samsung)

Chairman:    Chih-­‐Lin  I  (China  Mobile)

5G  Research  at  FuTURE  Forum

White  Paper  2014

郊区宏蜂 ⼤大 模波束 作源 配技

宏蜂 ⼤大 模分布式 作

室内分布式 作

5G-­‐863  Demonstrator

天线数128-­‐512

Denser  cooperaTon  network  

for  hot-­‐spot

Massive  MIMO  for  Wide  Range  Coverage

Massive  Distributed  MIMO  for  Macro-­‐Cells

Intelligent  Resource    Management  and  SON  

Scenarios  and  Demonstra0on  (1st  Phase  )

13  

14  

Poten0al  Direc0on:  Xplore  Spa0al  Resource  U0liza0on

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4G 5G

Typical  Examples:    ü Massive  MIMO  via  spaTal  beams  over  the  coverage  area;    ü  Denser  cooperaTon  network  (cooperaTve  small  cells);  ü ……  

6/29/15  

Possible  Evolu0on  of  Radio  Access  Network    EPC

Flat,  Cloud  &  Virtualiza0on?

C-­‐RAN/D-­‐RAN

15  

16  

Cloud Architecture based on massive GPPs, Sync-Ethernet with dense 100/40/10Ge interconnection.

Massive  MIMO  

Wireless  OpTcal  Millimeter  Waves  

Denser  Net  

5G Demonstrator：An Open Architecture

SON/SDN/NFV  

Source: Cooperative Wireless Center @ SEU 16  

Other  possible  scenarios

Outline

•  Background  and  Recent  Research  Advances  in  China  •  Na0onal  High-­‐Tech  R&  D  Program:  863-­‐5G  Project  •  Open  PlaSorm  and  Some  Enabling  Technologies  

6/29/15

Demonstration Scenarios：Centralized vs Distributed

–  Large number of antenna at BS. –  Large number of beams for

SDMA. –  Used for large area coverage.

–  Introduce the denser nodes to explore spatial domain resource.

–  Used for hotspot and indoor.

Massive MIMO Distributed RAN

6/29/15   19  

The  Common  Model  for  both  Massive  MIMO  and  D-­‐RAN  With  ideal  Connec0ons

Co-­‐located  or  Distributed  A

ntennas

The  boeleneck

6/29/15

Why  Massive  Coopera0on  Nodes:    More  Coopera0on,  More  Gain  -­‐  the  Uplink  Case  

Gain  in  EE

Gain  in  SE    (1,2,7)

X.  You  et  al,  Coopera0ve  distributed  antenna  for  mobile  communica0on  systems,  IEEE  Wireless  Communica0ons,  June,  2010  D.  Wang,  J.  Wang,  X.  You,  Spectral  Efficiency  of  Distributed  MIMO  Systems,  IEEE  Journal  on  Selected  Areas  in  Communica0ons,  Vol.31  ,  vol.  10  ,  2013  

5G  Open  PlaSorm  Ongoing  in  2014-­‐2015

21  

A  Hybrid  Cloud  RAN  Architecture  Based  on  Sync-­‐Ethernet  &  MSTP/Trill  

Ø   Freq:  3.5GHz/6-­‐11GHz  Ø   Bandwidth:  100/500MHz  Ø   Antenna  Number:  up  to  1024  Ø   Centralized/Distributed  Ø   Tx  Timing  Sych  <  30ns  with  IEEE  1588  PTPv2  Ø   Rx  Processing  Delay  <  15uS  Ø   Massive  GPPs  up  to  10K  CPU  Cores  Ø   Auxiliary  HW  Accelerators  Ø   Private  Ethernet  &  MSTP/Trill  Ø   SON/SDN/NFV  Applicable  

21  Source: Cooperative Wireless Center @ SEU

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信道能量

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选择波束

Source:  SEU-­‐Huawei  Joint  Research   22  

48  users  with  1/7  pilot/data  raTo

RF Frontend Ethernet X Ethernet X Ethernet X GPPs Accelerator

Implementa0on  of  Massive  MIMO

Massive MIMO – Beam-Domain Sparsity

6/29/15   23  

D-­‐RAN  –  Complexity  Reduc0on  via  Spa0al  Sparsity

6/29/15   24  

Simula0on  Condi0ons:  720  APs  &  720  users,  with  single  antenna  for  each.  A  factor  of  24  for  pilot  reuse.    Spa0al  sparse  is  set  to  97%.    

Matrix-­‐Inversion-­‐Avoid  Approach

Complexity  Reduc0on  via  Spa0al  Sparsity

6/29/15   25  

Parallel  Implementa0on  in  Frequency  Domain

6/29/15   26  

General Multi-Carrier (GMC) Link

X.Q. Gao & X.H. You et al, IEEE JSAC, vol.24, No.6, 2006

Parallel  Implementa0on  in  Frequency  Domain  –  Filter  Bank

6/29/15   27  

Parallel  Implementa0on  in  Time  Domain

Overall Parallel Implementation

System Synchronization via SyncE/1588v2

29  

5G:  our  common  wireless  future!