講05 周勝鄰 中文簡報 - tnst.org.t · ITRI Small Cell UE ITRI Small Cell ITRI Small Cell UE CWMP/FTP X2 Backhaul Network ITRI SON Server (HeMS + SON Agent) S1 CWMP (TR‐069)

小型基站從4G到5G的產業應用趨勢

Sheng-Lin Chou (周勝鄰)Deputy GD, ICL/ITRI

e-mail: [email protected]. 06

《台日次世代行動通訊技術開發與應用策略研討會》

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RRU

Distributed Antenna System (DAS)

Wi-Fi

Macro Cell

ResidentialSmall Cell

Small Cell 的應用情境

Capacity vs. Coverage Indoor vs. Outdoor

50%-50% on Current StatusOutdoor --- Extension of MacroIndoor --- Segregated Environment

Operator vs. Users Deployed Use Cases

HomeEnterpriseUrbanRural & Remote

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Small Cell Deployment Status

全球Small Cell 佈建不如預期發展 !!

技術上的問題

非技術的原因3G 時代

2000 ~ 2007: – 網路頻寬需求不高

2008 ~ 2010– 開始考慮升級到4G

4G: 2010 ~ now全面性覆蓋優先

– 大基站建置優先Small Cell Follows ?

Source: Small Cell Forum,Feb. 2015

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Small Cell Market Trends

Residential Non-ResidentialTrend of unit price: home ↓ ; business or carrier-grade scenarios ↑Growth Rate in 2013 : Residential : 7% ; Non-residential : 85%Revenue at 2015: Urban + Enterprise > ResidentialRevenue at 2018: Non-residential > 96%

Source: Small Cell Forum,Feb. 2015

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Small Cell 佈建的問題

InterferenceHeNetMajor Issue in Small Cell Deployments

BackhaulWireless Backhaul

mmWAVE? 802.11ad ?

RAN IntegrationSpectrum ManagementHandover

Getting Worse as Small Cell coverage is getting smaller

Small cell

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Self Organizing Network (SON)

SONEssential for Supporting Massive Small Cell Deployment

Expensive for Network Deployment

SON FunctionalitySelf-Configuration

Band Selection, Cell ID, Tx Power, Neighboring List, …Authentication and setup of secure tunnel to mobile core & OA&MTransport parameters (IP addresses, QoS negotiation, ;)

Self OptimizationNeighbor list optimizationHandover optimizationLoad balancing and capacity optimization

Interference Mitigation/Management

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EU METIS’s Vision on 5G

Parameter User experienced

data rate

Peak data rate

Mobility Latency Connection density

Energy efficiency

Spectrum efficiency

Area Traffic Capacity

Value for IMT 2020

100Mbit/s –1Gbit/s

20 Gbit/s 500km/h 1ms 106 #/Km2 50 -100 times IMT-Advanced

2/3/5 times IMT-

Advanced

10 Mbps/m2

Source: WP5D #21, Feb. 2015

METIS5G Vision

ITU-R 5G Vision: IMT-2020 and Beyond

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1,000x Capacity Increase Challenges

HighChallenge

25

10

4

2.5

Spectrum Efficiency

Spectrum Extension/ Utilization

NetworkEfficiency/

Density

1000xCapacity=× ×

4

10

5

4

10

10

50

100

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METIS 5G System Concepts

Direct Device-to-Device(capacity, reliability,

coverage, EE)

Ultra-reliableCommunication

(Very low latency,multi-hop comm.)

Massive MachineCommunications

(IoT, Very low cost& power)

Moving Networks(Coverage, V2V,In-vehicle apps)

Ultra-denseNetworks

(very high datarates, crowds)

METIS 5G System

Concepts

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UDN --- Technical Challenges

Radio Access TechnologyLTE-A evolutionary based? or new revolutionary one ?New spectrum opportunities on mmWave with massive MIMO for link performance improvement Frame structure optimized for dynamic IP traffic Spectral efficiency increase

New modulations, Enhanced link performance, Reduced control signalling overhead,

Small cell Integration and InteractionNode clustering for collaborationNeighborhood discovery for dynamic clusteringResource / interference management, RAT selection, spectrum sharingSpectrum coordination to avoid in-band/out-of-band coexistence problemsReduction of the number of hand-over (HO) failureUDN/Macro integration

Potential split of user and control plans

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UDN --- Technical Challenges

Wireless BackhaulingWireless backhaul will be a key enabler for indoor and outdoor UDN deployments

5G UDN deployments will require less planning, optimization and management

– when most of these functionalities will be automated and solved by the network itself

– Less predictable needs for backhaul is available

Wireless backhaul for UDN should be Self-configurableAdaptive to changes in network topology and network load

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Qualcomm UDN Trial Deployment

At NASCAR Phoenix Intl Raceway, April 2014The densest LTE outdoor LTE network

Avg. cell distance: 22m (compared with traditional: 519 m)

Deployed with unplanned mannerEquivalent to 1,000 Small Cells/km2 40x more capacity than traditional solution which is no interference management

Data Source: Qualcomm

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Simulation Result on UDN

Simulation result Simulation result

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UDN Trial in ITRIUltraUltra‐‐Dense NetworkDense Network

Outdoor:•Softball Field•Car Park•125 x 150 Square Meters•Average 200 people

Indoor:•Office•Meeting Room•Lecture Hall•Lobby•100 x 35 Square Meters•3 Stories High•Average 800 people

Hotspot:•Convenience Store•Fast Food Restaurant•Food Court•Post Office•Bank•150 x 150 Square Meters•First Floor and Underground Floor•Peak Times: 3000 people•Off‐peak Times: 100 people

Mobility:•Bi‐directional•Speed Limit: 30Km/h•Max. 900 Meters Lane

Deploy with ITRI Small Cells; uD CellDeployment Plan:

100 Indoors/outdoors Small Cell (~ 1,000 cells/km2)

Current Deployment: ~ 40 small Cells

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ITRI LTE-A Small Cell Solution

• 64 Active Users• Support UE CAT 6• Throughput : DL/UL 300M/50M• 8/16 UE per TTI• GPS/IEEE1588 synchronization • Sniffer Function• X2 & Scheduling支援eICIC• Smart Antenna Supported RRM

14

FrameworkL3 RRM

Call Control Finite State Machine

RRC

PDCP

RLC

UMAC

GTP-U

UDCP

S1AP

SCTP

X2AP

DB

OAM

SON

QoS

LMAC

PHY API

USCHED

TI NDK

Fram

ewor

k

Ethernet

Core 0

Core 1

Core 2

Core 3

ASN.1

ASN.1

ARM A8/A15

RF Chip/

RF Module

FPGA

ADADCC

DADACC

DADACC

ADADCC

ADADCC

ADC

DADACC

DAC

Smart antenna

LSCHED

TX RX

Tx/Rx Filtering and Access

RF Control

Timing Control

SRIO

BasebandPHY

MAC

Protocol. RLC. PDCP. RRC

. S1

RRM

SON

SON 

5MHz            5MHz 

Secondary CC

Primary CC

Smart Antenna

Carrier Aggregation 

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Centralized SON Server

MME/S-GW

ITRI Small Cell

UE

ITRI Small Cell

ITRI Small Cell

UE

CWMP/FTP

X2

Backhaul Network

ITRI SON Server(HeMS + SON Agent)

S1

CWMP (TRCWMP (TR‐‐069) (SON Server069) (SON Server調整調整Small CellSmall Cell系統參數系統參數))

FTP (FTP (上傳上傳Performance Report)Performance Report)

L1/L2L1/L2

IPIP

TCPTCP

FTPFTP

L1/L2L1/L2

IPIP

TCPTCP

SON ServerSON Server

CWMPCWMP

SON AlgorithmSON Algorithm

RRM

HeNB Controller

RRC

PDCP

RLC

MAC

GTP-U

UDP

S1AP

SCTP

X2AP

PM

SQLite

OAMSON

CWMP FTP

TCP

IP

L1/L2PHY

ITRI Small CellITRI Small Cell

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Interference Management

ICIC Coordination

‐26% ‐30%‐50%

eICIC Coordination

Mean BS Throughput

Inter‐site distance in meters

‐30%

ICIC、eICIC機制在UDN環境效能下降

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LTE-A Dual RAT Smart Antenna

SON

RRM

Beam Control

SON/RRM + Smart Antenna

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UE2UE2(w/ MRC)(w/ MRC)

UE1UE1(w/ MRC)(w/ MRC)LTE.L2LTE.L2

MRC MechanismMRC MechanismLTE.L2LTE.L2

MRC MechanismMRC Mechanism

LTE.L2LTE.L2

LTE driverLTE driver

RRCRRC

WiFiWiFidriverdriver WiFiWiFidriverdriver

PDCP/RLCPDCP/RLC

UMACUMAC

USchedUSched

IP Packet

MultiMulti‐‐Radio ControlRadio ControlLTE.L2LTE.L2

LTE driverLTE driver

RRCRRC

WiFiWiFidriverdriver WiFiWiFidriverdriver

PDCP/RLCPDCP/RLC

UMACUMAC

USchedUSched PDCP/RLCPDCP/RLC

UMACUMAC

USchedUSchedMulti‐Radio Control

LTELTEradioradio

WiFiWiFiradioradio

WiFiWiFiradioradio

Dual RAT: LTE-A/WiFi Aggregation

Internet

LTEWi-Fi

CN

App

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ITRI 5G Project: mmWAVE based Small cell

1GbE/10GbESwitch

CPU/GPUL2/L3

10GbEApplication

ServerServer

DSPTx/RxSync

DSPSubframeEnc/Dec

DSPSubframeEnc/Dec

DSPSubframeEnc/Dec

DSPSubframeEnc/Dec

1GbE SRIO

CPRIDecoder

ADI IF

RFControl

RFTransceiver RF

T/RModule

AC/DCPower

ADI IF

ADI IF

ADI IF

IF

SRIO

SRIO

SRIO

1GbE

1GbE

1GbE

1GbECPRI

RRHRRHBBUBBU

mmWave Prototype Demonstration in Globalcomm 2014: ~1G bps