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)
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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: slchou@itri.org.tw2015. 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
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