Download - LTE Simulators Webinar
LTE Simulators
LTE SimulatorsOutline
Copyright © IS-Wireless | www.is-wireless.com 2
1. LTE Introduction
2. LTE PHY Lab Introduction
3. LTE-A Features in LTE PHY Lab
4. LTE PHY Lab Toolbox Content (Matlab)
5. Q&A
LTE Introduction
LTE Introduction3GPP Systems’ Evolution
Copyright © IS-Wireless | www.is-wireless.com 4
1997 2000 2005 2009 2011/2012
LTE LTE-Advanced
2G 3G 3.9G3.5G 4G
1992
GPRS
2.5G
GSM UMTS HSPA
Phase 1
Phase 2
Rel. 96
Rel. 97
Rel. 98
Rel. 99
Rel. 4
Rel. 5
Rel. 6
Rel. 7
Rel. 8
Rel. 9
Rel. 10
Rel. 11
3GPPRelease
Voice only 14.4kbpsUL: 128kbps
DL: 384kbps
UL: 11Mbps
DL: 28Mbps
UL: 75Mbps
DL: 325Mbps
UL: 500Mbps
DL: 1Gbps
HighestData Rate
LTE IntroductionGoals / Requirements for LTE and SAE
Copyright © IS-Wireless | www.is-wireless.com 5
eNB
eNB
Standardization work for LTE and SAE started in December 2004
IMS/Services/Internet/PSTN
WiMAX
EPC
GERAN/UTRAN
cdma200
Fixed
High data rate/low latency/packet optimized RAN All IP based/flat core network architecture
LTE Goals/Requirements
• High speed (up to 350km/h)
• Low latency (below 10ms)
• Large throughputs (DL 100Mbps, UL 50Mbps)
• VoIP Capacity (200 users in 5MHz BW)
• Lower bit cost
• Flexible and scalable BW and spectrum
• Flat RAN network (only eNBs)
SAE Goals/Requirements
• Access for all NWs (interworking/global roaming)
• IMS for all NWs
• Easy migration to EPS (from 2G/3G networks)
• Flat IP network (‘always-on’ concept)
• QoS Support for all services
• Policy and charging
aGW
LTE NetworkNetwork Architecture and Radio Interface Features
Copyright © IS-Wireless | www.is-wireless.com 6
• Multicarrier Transmission: DL OFDMA, UL SC-FDMA
• Shared data channels with fast update (1ms) and multi-
layer retransmissions
• Adaptive Modulation and Coding
• Multi Antenna Transmission: DL MIMO (2 or 4 antennas)
• Scalable System BW: 1.4, 3, 5, 10, 15, 20 MHz
• Quality-of-Service on Radio Interface
Radio Interface Technologies
eNB
LTE Radio Interface
SGW
MME
eNB
eNB
PGW
HSS
Uu
Uu
S11
S6a
S5S1-U
S1-MME
X2
Internet /
IMS ...
LTE Network
LT
E R
el.
8LT
E R
el.
9LT
E R
el.
10
MIMO
TF Scheduling
OFDMA/SCFDMA
HARQ
Reduced architecture
Adaptive-MCS
MBMS based on SFN
SON
Carrier Agregation (wider BW)
Relaying
Extended DL MIMO (8x8)
20092008 2010 2011 2012
Commercial deployment
Location Services
UL MIMO (4x4)
Enhanced Home eNB & HetNet
LT
E R
el.
11 Coordinated Multipoint Tx/Rx
MTC (M2M Communications)
eICIC and Relays
Specs freezing target
december 2012
LTE-Advanced
Specs Freezing
December 2008
Specs FreezingDecember 2009
Specs FreezingMarch 2011
Standardization
LTE Towards 4GFeatures’ Roadmap
Copyright © IS-Wireless | www.is-wireless.com 7
4G Simulators
Reasons For System ModellingFor Various Players in the Value Chain
LTE PHY Lab – a link level simulator
LTE PHY LabE-UTRA Physical Layer Model
MAC LayerMultipath
Channel
eNB
PHY TX
UE
PHY RXMAC Layer
Downlink
Uplink
• Implemented according to 3GPP Specifications
• Downlink & Uplink
• Single TX - single RX
• FDD and TDD versions
• Evaluates each individual bit
• All LTE MIMO Schemes
• Support for all LTE BWs
Main features of the LTE PHY Lab:
General Block Diagram of LTE PHY LabGeneral Block Diagram of LTE PHY Lab
LTE PHY Lab can be used to model
link-level behavior of LTE system:
• fading & AWGN
• FEC performance
• modulation
• synchronization & channel estimation
• performance measures: thrpt vs SNIR
Copyright © IS-Wireless | www.is-wireless.com 11
101010111001… 101010111001…
Comprehensive implementation of the 3GPP Rel 8 E-UTRA PHYComprehensive implementation of the 3GPP Rel 8 E-UTRA PHY
MAC LayerMultipath
Channel
eNB
PHY RX
UE
PHY TXMAC Layer
101010111001… 101010111001…UPLINK
DOWNLINK
eNB
LTE PHY Lab DL: eNB Transmitter Block Structure
Copyright © IS-Wireless | www.is-wireless.com 12
LTE-Advancedin the LTE PHY Lab v.2
LTE PHY LabTM v.2.0LTE-Advanced Features
Copyright © IS-Wireless | www.is-wireless.com 14
Physical channels and signals
Downlink PRS, CSI-RS, UE RSUplink PUCCH format 3
• Downlink• Extended SU-MIMO (up to 8 antennas)
• Support for Carrier Aggregation with up to 5 Component Carriers
• Release 9 PRS
• Release 10 UE Specific RS
• Release 10 CSI RS
• Uplink• Uplink SU-MIMO for PUSCH (up to 4 antennas)
• Uplink Spatial Diversity (SORTD) for PUCCH
• Support for Carrier Aggregation with up to 5 Component Carriers
• Clustered SC-FDMA
• New PUCCH format 3 for Aggregated HARQ-ACK Transmission for CA Support
• Possibility for simoultaneous transmission for PUCCH and PUSCH
eNB
eNB
LTE PHY Lab v.2.0 DL: eNB Transmitter
Copyright © IS-Wireless | www.is-wireless.com 15
LTE PHY Lab Toolbox
Q&A