© 2013 Agilent Technologies
Wireless Communications
Moving Forward to LTE-Advanced
with Heterogeneous
Networks
Presented by
Jung-ik Suh
Wireless Program Manager
Electronic Measurement Group
Agilent Technologies
© 2013 Agilent Technologies
Wireless Communications
2 © 2013 Agilent Technologies
Wireless Communications
Goal
HetNet Introduction
HetNet Challenges
HetNet Solutions
2
© 2013 Agilent Technologies
Wireless Communications
3 © 2013 Agilent Technologies
Wireless Communications
Agenda
• Wireless Evolution
• Homogeneous Network vs. Heterogeneous Network
• Heterogeneous Network Elements
• Heterogeneous Network Challenges
• Agilent Solutions to Solve Heterogeneous Challenges
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© 2013 Agilent Technologies
Wireless Communications
Wireless Evolution 1990 - 2013
IS-136 TDMA
PDC GSM
HSCSD iMode GPRS
WiMAX 2 802.16m
E-GPRS EDGE
W-CDMA FDD & TDD TD-SCDMA
HSDPA/ HSUPA
FDD & TDD
HSPA+ E-HSPA
802.16e Mobile
WiMAXTM
802.11g
802.11a
802.11b
802.16d Fixed
WiMAXTM
802.11n
802.11h
WiBRO
LTE-Advanced Rel 10 & Beyond
LTE FDD & TDD
Rel-8/9
IS-95A cdma
IS-95B cdma
cdma2000 1x RTT
1xEV-DO Release
0 A B
802.11ac 802.11ad
EDGE Evolution
5
© 2013 Agilent Technologies
Wireless Communications
Wireless Evolution 1990 - 2013
IS-136 TDMA
PDC GSM
HSCSD iMode GPRS
WiMAX 2 802.16m
E-GPRS EDGE
W-CDMA FDD & TDD TD-SCDMA
HSDPA/ HSUPA
FDD & TDD
HSPA+ E-HSPA
802.16e Mobile
WiMAXTM
802.11g
802.11a
802.11b
802.16d Fixed
WiMAXTM
802.11n
802.11h
WiBRO
LTE-Advanced Rel 10 & Beyond
LTE FDD & TDD
Rel-8/9
IS-95A cdma
IS-95B cdma
cdma2000 1x RTT
1xEV-DO Release
0 A B
802.11ac 802.11ad
EDGE Evolution
6
All About DATA Rates
With Seamless Connections!
© 2013 Agilent Technologies
Wireless Communications
Wireless Evolution 1990 - 2013
IS-136 TDMA
PDC GSM
HSCSD iMode GPRS
WiMAX 2 802.16m
E-GPRS EDGE
W-CDMA FDD & TDD TD-SCDMA
HSDPA/ HSUPA
FDD & TDD
HSPA+ E-HSPA
802.16e Mobile
WiMAXTM
802.11g
802.11a
802.11b
802.16d Fixed
WiMAXTM
802.11n
802.11h
WiBRO
LTE-Advanced Rel 10 & Beyond
LTE FDD & TDD
Rel-8/9
IS-95A cdma
IS-95B cdma
cdma2000 1x RTT
1xEV-DO Release
0 A B
802.11ac 802.11ad
EDGE Evolution
7
All About DATA Rates
With Seamless Connections!
© 2013 Agilent Technologies
Wireless Communications
8 © 2013 Agilent Technologies
Wireless Communications
Wireless Data Demands From…
8
© 2013 Agilent Technologies
Wireless Communications
9 © 2013 Agilent Technologies
Wireless Communications
Wireless Data Demands From…
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• Huge Data Traffics on Limited Resources
• x18 Mobile Broadband Data Traffics between ’11 &’16- Cisco
• Unbalanced Data Consumption by Areas and Times
• Huge Investments and Researches to Improve Wireless Data
Communications capacity and coverage but, Demands Growing Much Faster
© 2013 Agilent Technologies
Wireless Communications
10 © 2013 Agilent Technologies
Wireless Communications
• Enhance Existing Wireless Capability
− DC-HSPA, HSPA+
− Optimize Base Station capability
• Move to Faster, More Spectrum Efficient Technologies
− LTE, LTE-Advanced, WiMAX
− 802.11ac
• Move Networks Closer to User Equipment
− Heterogeneous Networks
− WLAN leverage
How to Improve
Wireless Data Communications?
10
© 2013 Agilent Technologies
Wireless Communications
11 © 2013 Agilent Technologies
Wireless Communications
Rel-5/6 Rel-7 Rel- 8 Rel-9 Rel-10
and Beyond
UMTS- HSPA / HSPA+ Evolution
WCDMA
WCDMA
14.4 Mbps
21/28 Mbps 42 Mbps
84 Mbps
168 Mbps 64 QAM/MIMO
DC-HSDPA
DC-HSDPA &
MIMO
MC-HSDPA
11
HSDPA / HSUPA HSPA+ HSPA+ HSPA+
HSPA / HSPA+ Evolution
• 482 Commercial Networks including 254 HSPA+ Networks
• 3,847 Devices- Smartphone, Tablet, PC, USB Dongle
- GSA Nov. 2012
HSPA+
© 2013 Agilent Technologies
Wireless Communications
12 © 2013 Agilent Technologies
Wireless Communications
0
Rel-5/6 Rel-7 Rel- 8 Rel-9 Rel-10
and Beyond
WCDMA
WCDMA
326 Mbps
12
UMTS- LTE / LTE-Advanced Evolution
LTE -Advanced LTE
LTE
14.4 Mbps
21/28 Mbps 42 Mbps
84 Mbps
168 Mbps
20MHz BW
OFDMA
64QAM
4x4 MIMO
1,000 Mbps
100MHz BW
with Carrier
Aggregation
LTE / LTE-Advanced Evolution
• 113 Commercial Networks
• 560 Devices- Smartphone,
Router, USB Dongle, Tablet
- GSA, Nov. 2012
© 2013 Agilent Technologies
Wireless Communications
UMTS Long Term Evolution
1999
2013
Release Stage 3: Core
specs complete
Main feature of Release
Rel-99 March 2000 UMTS 3.84 Mcps (W-CDMA FDD & TDD)
Rel-4 March 2001 1.28 Mcps TDD (aka TD-SCDMA)
Rel-5 June 2002 HSDPA
Rel-6 March 2005 HSUPA (E-DCH)
Rel-7 Dec 2007 HSPA+ (64QAM DL, MIMO, 16QAM UL). LTE & SAE
Feasibility Study, Edge Evolution
Rel-8 Dec 2008 LTE Work item – OFDMA air interface
SAE Work item – New IP core network
UMTS Femtocells, Dual Carrier HSDPA
Rel-9 Dec 2009 Multi-standard Radio (MSR), Dual Carrier HSUPA,
Dual Band HSDPA, SON, LTE Femtocells (HeNB)
LTE-Advanced feasibility study, MBSFN
Rel-10 March 2011 LTE-Advanced (4G) work item, CoMP Study
Four carrier HSDPA, eICIC
Rel-11 Sept 2012 CoMP, eDL MIMO, eCA, MIMO OTA, HSUPA TxD &
64QAM MIMO, HSDPA 8C & 4x4 MIMO, MB MSR
Rel-12 March 2013 stage 1 New carrier type, LTE-Direct, Active Antenna Systems
© 2012 Agilent Technologies
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© 2013 Agilent Technologies
Wireless Communications
Homogeneous Network vs.
Heterogeneous Network
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Wireless Communications
15 © 2013 Agilent Technologies
Wireless Communications
Traditional Homogeneous Networks
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Wireless Communications
16 © 2013 Agilent Technologies
Wireless Communications
Traditional Homogeneous Networks
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Wireless Communications
17 © 2013 Agilent Technologies
Wireless Communications
Traditional Homogeneous Networks
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Wireless Communications
18 © 2013 Agilent Technologies
Wireless Communications
Traditional Homogeneous Networks
Core Network
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© 2013 Agilent Technologies
Wireless Communications
19 © 2013 Agilent Technologies
Wireless Communications
Traditional Homogeneous Networks
Core Network
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© 2013 Agilent Technologies
Wireless Communications
20 © 2013 Agilent Technologies
Wireless Communications
Traditional Homogeneous Networks
Core Network
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© 2013 Agilent Technologies
Wireless Communications
21 © 2013 Agilent Technologies
Wireless Communications
Traditional Homogeneous Networks
Core Network
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© 2013 Agilent Technologies
Wireless Communications
22 © 2013 Agilent Technologies
Wireless Communications
Traditional Homogeneous Networks
• One Macrocell (Base Station) connects all mobile devices
operating under its coverage
• Locations and configuration are carefully chosen through
deployment planning to maximize the coverage and minimize the
interferences among other Macrocells
• Have very similar capability, data rates, QoS and serving UE
number regardless the data traffics
• Not a good solution for unbalanced data traffics from UEs
(busy office area, stadium, university vs. rural areas)
• High cost of equipment as well as installation and maintenance
22
© 2013 Agilent Technologies
Wireless Communications
23 © 2013 Agilent Technologies
Wireless Communications
Traditional Homogeneous Networks
Core Network
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© 2013 Agilent Technologies
Wireless Communications
24 © 2013 Agilent Technologies
Wireless Communications
Heterogeneous Networks
Internet
Core Network
Femto
Pico/Micro
Pico/Micro
Pico/Micro
Macro
Relay
RRH/DAS
Fiber
Optic
Wireless
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© 2013 Agilent Technologies
Wireless Communications
25 © 2013 Agilent Technologies
Wireless Communications
Heterogeneous Networks
• Expand wireless service coverage and improve capacity
• Various of wireless access technologies and cell types
• Combination of Macrocells, RRH, DAS, relay and Small Cells
- WLAN is also considered
(Hot Spot 2.0 from Wi-Fi Alliance, I-WLAN & SaMOG from 3GPP)
• Faster deployment with flexible installation location
• More interference challenges
• Provide different capability, data rates, QoS to maximize ROI
depending on data demands on the specific areas
• Lower cost of small cells, installation as well as maintenance
• Lower power consumptions from Cells and UEs - Green Networks
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© 2013 Agilent Technologies
Wireless Communications
26 © 2013 Agilent Technologies
Wireless Communications
Quick Comparison - Homogeneous vs Heterogeneous Networks
Homogeneous Network Heterogeneous Network
Cell size One big and same size
Base Station Various with smaller nodes
Coverage Broader (25-40km) Narrower (50m to 2km)
Deployment
Ownership
Carefully planned and
configured by wireless
operators
Small Cells- less planned,
installed by wireless operators
as well as end-users
Interference Well managed from
deployment plan
Complicated due to various
overlaps, types of backhauls
and managing ownership
Capacity Flexibility Hardly flexible More flexible
Cost of equipment,
installation and
maintenance
Higher Small Cells- Lower
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© 2013 Agilent Technologies
Wireless Communications
27 © 2013 Agilent Technologies
Wireless Communications
Why Moving to Heterogeneous Network?
• Difficult to Install Base Station in Data Traffic Dense Areas
- Challenge to find right property to install new Base Stations
• Limitation on Advanced Radio Technologies
- Face technical / realistic challenges to keep improving wireless performance
- Limited efficiency and performance at cell edge due to co-channel interference- require high SINR and power
• Need to Reduce Cost (CAPEX, OPEX)
- Reduce costs for installation as well as maintenance
• Fast and Flexible Deployment
- Faster Small Cell deployment, even with self installation by end-user
• Less Power Consumptions- Green Network
- Both cells and UEs can reduce the power consumption
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© 2013 Agilent Technologies
Wireless Communications
29 © 2013 Agilent Technologies
Wireless Communications
Heterogeneous Networks
Internet
Core Network
Femto
Pico/Micro
Pico/Micro
Pico/Micro
Macro
Relay
RRH/DAS
Fiber
Optic
Wireless
29
© 2013 Agilent Technologies
Wireless Communications
30 © 2013 Agilent Technologies
Wireless Communications
Heterogeneous Network
- Low Power Small Cells
• Overlay under Macrocell coverage to improve service coverage,
spectrum efficiency and network capacity
• Offload Macrocell data load
• Increase capacity flexibility based on data demands on the areas.
• Same or similar QoS as Macrocell under the wireless service
operators’ management with licensed spectrum
• Various types of backhaul
• Complicated interference, handover issues
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© 2013 Agilent Technologies
Wireless Communications
31 © 2013 Agilent Technologies
Wireless Communications
Compare Different Cell Types
- Not Clearly Defined Yet
Cell
Types Serving UE
Coverage
Area Location Managing Price
Max.
Power Backhaul
Macro + 200 25km-
40km Tower
Service
provider $$$$$ 40W S1,E1, T1
Micro 50-200 Up to 2km
Smaller
tower,
buildings
Service
provider $$$ 2W X2
Pico Up to 64 200-300m
buildings,
poles,
signals,
indoor
Service
provider $$ 250mW X2
Femto Up to 8 Less than
30m
House,
office
Service
Providers
/End-user
CSG
$ 20mW
Internet
with fiber
optic or
DSL
WLAN 5-20 300m House,
office
Service
Providers
/End-user
$
200mW
Internet
with fiber
optic or
DSL
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© 2013 Agilent Technologies
Wireless Communications
32 © 2013 Agilent Technologies
Wireless Communications
Small Cell Deployments
• First launch by Sprint Wireless in US, Sep 2007
• First enterprise launch by Verizon Wireless in US, Jan 2009
• First LTE Femtocell by SK Telecom in Korea, Jun 2012
• First million deployment by Sprint Wireless in US, Oct 2012
• First dual-mode 3G/LTE by NTT DoCoMO in Japan, Dec 2012
• Consumer Femtocell deployments: 26 including Vodafone UK, AT&T,
Cosmote
• Enterprise Femtocell deployments: 6 including T-Mobil UK, Network
Norway, Orange France
• Small cell deployment forecasts
32
Data source: Small Cell Forum Dec. 2012
www.smallcellforum.org
© 2013 Agilent Technologies
Wireless Communications
33 © 2013 Agilent Technologies
Wireless Communications
Heterogeneous Networks
Internet
Core Network
Femto
Pico/Micro
Pico/Micro
Pico/Micro
Macro
Relay
RRH/DAS
Fiber
Optic
Wireless
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Wireless Communications
34 © 2013 Agilent Technologies
Wireless Communications
Heterogeneous Network
- Remote Radio Heads / Distributed Antenna System
• Physically expand Base Station capability to desired places
• Retransmit the Base Station signals linked with the fiber optic
cables
• Improve only coverage; not improve or add network capability
• Much more cost effective than Base Station; slightly more
expensive and more power consumption than Small cells or WLAN
Fiber Optic cable
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© 2013 Agilent Technologies
Wireless Communications
35 © 2013 Agilent Technologies
Wireless Communications
Heterogeneous Networks
Internet
Core Network
Femto
Pico/Micro
Pico/Micro
Pico/Micro
Macro
Relay
RRH/DAS
Fiber
Optic
Wireless
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© 2013 Agilent Technologies
Wireless Communications
37 © 2013 Agilent Technologies
Wireless Communications
Interference
• Overlapped cells can cause significant interference issue
(Ex. Macrocell vs Picocell, Macrocell vs Femtocell)
• More complicated interference manage than Homogeneous
Network with various cell-types, radio technologies and backhauls
• Interferences reduce the Heterogeneous Networks performance
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© 2013 Agilent Technologies
Wireless Communications
38 © 2013 Agilent Technologies
Wireless Communications
Interference - Continued
• 3GPP Rel. 8 and 9
- Inter-Cell Interference Coordination (ICIC)
o Frequency domain
o Power control
o ICIC manages only data channels- No improving with the HetNet
interference issue
• 3GPP Rel. 10
- enhanced-Inter-Cell Interference Coordination (eICIC)
o Add Time domain with Almost Blank Sub-frames (ABS) to reduce the
interference issues
o Cross-Carrier Scheduling with Carrier Aggregation
• 3GPP Rel.11
- Further enhanced-Inter-Cell Interference Coordination (FeICIC) is under
developed
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© 2013 Agilent Technologies
Wireless Communications
39 © 2013 Agilent Technologies
Wireless Communications
Interference - Continued
• 3GPP Rel. 10
- enhanced-Inter-Cell Interference Coordination (eICIC)
CRE
Pico-Cell Range Expansion (CRE)
© 2013 Agilent Technologies
Wireless Communications
40 © 2013 Agilent Technologies
Wireless Communications
Interference - Continued
• 3GPP Rel. 10
- enhanced-Inter-Cell Interference Coordination (eICIC)
o Add Time domain with Almost Blank Sub-frames (ABS) /
Lightly Loaded CCH transmission Sub-frame (LLCS) to reduce
the interference issues
ABS
ABS
eICIC with ABS / LLCS
© 2013 Agilent Technologies
Wireless Communications
41 © 2013 Agilent Technologies
Wireless Communications
Interference - Continued
• 3GPP Rel. 10
- enhanced-Inter-Cell Interference Coordination (eICIC)
o Cross-Carrier Scheduling with Carrier Aggregation
41
CRE
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Wireless Communications
42 © 2013 Agilent Technologies
Wireless Communications
Interference - Continued
Resources can be assigned to a user equipment (UE) in two ways:
Same-carrier scheduling
Cross-carrier scheduling
• 3GPP Rel. 10
- enhanced-Inter-Cell Interference Coordination (eICIC)
o Cross-Carrier Scheduling with Carrier Aggregation
© 2013 Agilent Technologies
Wireless Communications
43 © 2013 Agilent Technologies
Wireless Communications
PDCCH (Physical Downlink Control Channel) carries the uplink and downlink resource grant
PDCCH
PDSCH
Subframe
CC#1
PDCCH
PDSCH PDSCH
PDCCH
CC#2 CC#3
Interference - Continued
Same Carrier Scheduling
- Separate PDCCH for each CC
- Resource scheduling (Downlink assignments / Uplink grants) are on the same carrier
- Reusing 3GPP Release 8 / 9 PDCCH structure and DCI formats for backward compatibility
- Each component carrier can be analyzed individually
• 3GPP Rel. 10
- enhanced-Inter-Cell Interference Coordination (eICIC)
o Cross-Carrier Scheduling with Carrier Aggregation
© 2013 Agilent Technologies
Wireless Communications
44 © 2013 Agilent Technologies
Wireless Communications
PDCCH PDCCH
PDCCH
PDSCH
Subframe
CC#1
PDSCH PDSCH
CC#2 CC#3
Interference - Continued
Primary Cell (PCell) Secondary Cells (SCell)
3-bit CIF
included in
DCI
Cross Carrier Scheduling
- Common PDCCH for multiple CCs
- Resource scheduling (Downlink assignments / Uplink grants) are NOT on the same carrier
- New Carrier Indicator Field (CIF) in DCI
- Analysis of one carrier depends on another carrier
• 3GPP Rel. 10
- enhanced-Inter-Cell Interference Coordination (eICIC)
o Cross-Carrier Scheduling with Carrier Aggregation
© 2013 Agilent Technologies
Wireless Communications
45 © 2013 Agilent Technologies
Wireless Communications
Interference - Continued
• Manage control channel interference for PDCCH.
• Ex.CC1 of Macrocell would cause high interference to CC1 of Picocell, therefore
Picocell uses CC2 for PDCCH messages to schedule PDSCH transmission on CC1
• Macro cell uses CC1 to schedule PDSCH transmission on both CC1 and CC2
PD
CC
H
PDSCH
PDSCH scheduled by
PDCCH from CC1
Macrocell
PD
CC
H
PDSCH
PDSCH scheduled by
PDCCH from CC2
Picocell
CC1
CC2
CC1
CC2
CC1-
Marco
CC2-
Macro CC1-
Pico CC2-
Pico
• 3GPP Rel. 10
- enhanced-Inter-Cell Interference Coordination (eICIC)
o Cross-Carrier Scheduling with Carrier Aggregation
© 2013 Agilent Technologies
Wireless Communications
46 © 2013 Agilent Technologies
Wireless Communications
Heterogeneous Network Challenges
• Self Organization Network
- Cell deployments with minimized service providers’ initial management
- Self-configuration, Self-healing, and Self-optimization
• Handover within different types of cell having different backhauls
- Handover among large number and various types of Macrocell and
small cells
• Security
- Hardware security
- Network security
46
© 2013 Agilent Technologies
Wireless Communications
Agilent Solutions for
the Heterogeneous Network Challenges
47
© 2013 Agilent Technologies
Wireless Communications
48 © 2013 Agilent Technologies
Wireless Communications
• Cross Carrier Scheduling with Carrier Aggregation
- Analyze the multiple transmit and receive chains simultaneously
89600 VSA Software
Inter-band and intra-band carrier
aggregation support for both uplink and
downlink, FDD and TDD
Hardware: X-Series Signal Analyzers or
N7109A Multi-Channel Signal Analyzer
Two component carriers at
800 MHz
One component
carrier at 2100 MHz
Agilent 89600 VSA SW and X-Series Signal Analyzer
solve the interference challenges
Interferences Challenges
48
© 2013 Agilent Technologies
Wireless Communications
49 © 2013 Agilent Technologies
Wireless Communications
Interferences Challenges
• Analyze The Signals Having Different Bandwidths
Agilent 89600 VSA SW and X-Series Signal Analyzer
solve the interference challenges
Challenge:
Mask test on
bursted WLAN
signal, 20 MHz
Wide.
Simultaneously
check level of
bursted spur, but
signal is below the
broadband noise
floor.
Solution:
Meas01 mask test
uses 140 MHz
span, 1 MHz RBW.
Spur at 2.46 GHz
is not visible.
Meas02 at 48 MHz
offset uses13 MHz
span and 3 kHz
RBW. Noise floor
is 25 dB lower.
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© 2013 Agilent Technologies
Wireless Communications
50 © 2013 Agilent Technologies
Wireless Communications
Interferences Challenges
• Analyze The Signals Located Far Away
Agilent 89600 VSA SW and X-Series Signal Analyzer
solve the interference challenges
DUT
LTE
WLAN
LTE WLAN ~650 MHz
Trig.
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© 2013 Agilent Technologies
Wireless Communications
51 © 2013 Agilent Technologies
Wireless Communications
Interferences Challenges
• Verify Various Radio Signals At The Same Time
Agilent 89600 VSA SW and X-Series Signal Analyzer
solve the interference challenges
TX
GSM
WCDMA
LTE
S
GSM WCDMA LTE
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© 2013 Agilent Technologies
Wireless Communications
52 © 2013 Agilent Technologies
Wireless Communications
Interferences Challenges
• System Level Design and Simulation
- Multiple signal, multiple parameters for various environments change
Agilent SystemVue Design & Simulation Cockpit
solve your early design challenges
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LTE1: Fc 1e9+2.5e6, BW 5e6, SR 15.36e6
LTE2: Fc 1e9+7.5e6, BW 5e6, SR 15.36e6
WCDMA1: Fc 1e9-2.6e6, BW 5e6, SR 30.72e6
WCDMA2: Fc 1e9-7.6e6, BW 5e6, SR 30.72e6
GSM1: Fc 1e9-11.6e6, BW 0.6e6, SR 3.25e6
GSM2: Fc 1e9-12.2e6, BW 0.6e6, SR 3.25e6
EDGE1: Fc 1e9+11.6e6, BW 0.6e6, SR 3.25e6
EDGE2: Fc 1e9+12.2e6, BW 0.6e6, SR 3.25e6
Set output sample rate to be multiple
of LTE base sample rate 15.36e6
Compare LTE1 input and output after resampling
Compare WCDMA1 input and output after resampling
Multi-Standard Radio spectrum
2 LTE + 2 WCDMA + 2 GSM + 2EDGE
Compare GSM1 input and output after resampling
Compare EDGE1 input and output after resampling
FcChange
Bandwidth=5e+6Hz [BW_LTE1]
OutputFc=1.003e+9Hz [Fc_LTE1]E1 {EnvFcChange@Data Flow Models}
123
StartStopOption=TimeLTE1_out {Sink@Data Flow Models}
123
StartStopOption=TimeLTE1_in {Sink@Data Flow Models}
T=6.15235e-6s
Unit=TimeT1 {TimeDelay@Data Flow Models}
T=6.15235e-6s
Unit=TimeT2 {TimeDelay@Data Flow Models}
FcChange
Bandwidth=5e+6Hz [BW_WCDMA1]
OutputFc=997.4e+6Hz [Fc_WCDMA1]E2 {EnvFcChange@Data Flow Models}
123
StartStopOption=Time
WCDMA1_out {Sink@Data Flow Models}
123
StartStopOption=Time
WCDMA1_in {Sink@Data Flow Models}
T=6.15235e-6s
Unit=Time
T3 {TimeDelay@Data Flow Models}
FcChange
Bandwidth=600000Hz [BW_GSM1]
OutputFc=988.4e+6Hz [Fc_GSM1]
E3 {EnvFcChange@Data Flow Models}
T=6.15235e-6sUnit=Time
T4 {TimeDelay@Data Flow Models}
FcChange
Bandwidth=600000Hz [BW_EDGE1]OutputFc=1.012e+9Hz [Fc_EDGE1]
E4 {EnvFcChange@Data Flow Models}
123
StartStopOption=Time
EDGE1_in {Sink@Data Flow Models}
123
StartStopOption=Time
EDGE1_out {Sink@Data Flow Models}
123
StartStopOption=Time
GSM1_in {Sink@Data Flow Models}
123
StartStopOption=Time
GSM1_out {Sink@Data Flow Models}
Signal Combination
The order of input signals MSR(1:8)
need to match the order of SampleRate, Fc, and Bandwidth parameters.
Combines----------------2 LTE 2 WCDMA2 GSM2 EDGE
Spectrum Analyzer
ResBW=5e3HzStart=0s
Mode=ResBW
MSR_spec {SpectrumAnalyzerEnv@Data Flow Models}
Amplifier
dBc1out=30dBm
GCType=dBc1
Gain=0GainUnit=dB
A5 {Amplifier@Data Flow Models}
SignalCom biner
out put
com bined
OutputSampleRate=30.72e6
OutputSampleRateOption=User Defined
OutputFc=1e9
Bandwidth=(1x8) [5e+6,5e+6,5e+6,5e+6,60…
Fc=(1x8) [1.003e+9,1.008e+9,997.4e+6,99…SampleRate=(1x8) [15.36e+6,15.36e+6,30.…
S1 {SignalCombiner@Data Flow Models}
Gain = 0dB20
-40 20
Gain = 0dB20
-40 20
Slider 1 : LTE2 power level
Slider 2 : WCDMA1 power level
VSA_89600B_Sink
VSATitle='Simulation outputDisabled: OPEN
V1 {VSA_89600B_Sink@Data Flow Models}
CCDF
Stop=999e-6s [Stop_Time]Start=0s [Start_Time]
C1 {CCDF_Env@Data Flow Models}
Amplifier
Gain=-20GainUnit=dB
A3 {Amplifier@Data Flow Models}
Amplifier
Gain=-20
GainUnit=dB
A4 {Amplifier@Data Flow Models}
Amplifier
Gain=-20
GainUnit=dB
A1 {Amplifier@Data Flow Models}
Amplifier
Gain=-20
GainUnit=dBA2 {Amplifier@Data Flow Models}
RFCarrier=987.8e+6Hz [Fc_GSM2]
Periodic=YESBuiltInFile=GSM_1C_CONT
WaveformFile=Built InGSM2 {ReadSignalStudioFile@Data Flow Models}
RFCarrier=1.012e+9Hz [Fc_EDGE1]Periodic=YES
BuiltInFile=EDGE_1C_BURSTWaveformFile=Built In
EDGE1 {ReadSignalStudioFile@Data Flow Models}
RFCarrier=1.012e+9Hz [Fc_EDGE2]
Periodic=YESBuiltInFile=EDGE_1C_CONT
WaveformFile=Built In
EDGE2 {ReadSignalStudioFile@Data Flow Models}
RFCarrier=988.4e+6Hz [Fc_GSM1]
Periodic=YESBuiltInFile=GSM_1C_BURST
WaveformFile=Built In
GSM1 {ReadSignalStudioFile@Data Flow Models}
WCDMA
FCarrier=997.4e+6 [Fc_WCDMA1]
WCDMA1 {WCDMA}
Spectrum Analyzer
ResBW=5e3HzStart=0s [Start_Time]
Mode=ResBW
EDGE1_spec {SpectrumAnalyzerEnv@Data Flow Models}
Spectrum Analyzer
ResBW=5e3HzStart=0s [Start_Time]
Mode=ResBW
EDGE2_spec {SpectrumAnalyzerEnv@Data Flow Models}
Spectrum Analyzer
ResBW=5e3HzStart=0s
Mode=ResBW
GSM1_spec {SpectrumAnalyzerEnv@Data Flow Models}
Spectrum Analyzer
ResBW=5e3Hz
Start=0s [Start_Time]Mode=ResBW
GSM2_spec {SpectrumAnalyzerEnv@Data Flow Models}
WCDMA
FCarrier=992.4e+6 [Fc_WCDMA2]
WCDMA2 {WCDMA}
LTE
FCarrier=1.003e+9Hz [Fc_LTE1]LTE1 {LTE}
LTE
FCarrier=1.008e+9Hz [Fc_LTE2]
LTE2 {LTE}
Gain=0dB20
Subnetwork2 {GainDB}
Gain=0dB20
Subnetwork1 {GainDB}
© 2013 Agilent Technologies
Wireless Communications
53 © 2013 Agilent Technologies
Wireless Communications
Manufacturing Challenges
• Femtocell Manufacturing
- Guarantee measurement performance or lower cost
Agilent X-Series Signal Analyzer and Signal Generators
solve manufacturing challenges
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© 2013 Agilent Technologies
Wireless Communications
Signal
Generators
RDX for
DigRF v4
Systems for RF and
Protocol Conformance
RF Module Development
RF Proto RF Chip/module
Design
Simulation
BTS and Mobile
BB Chipset Development
L1/PHY
FPGA and ASIC
Conformance
RF and BB
Design
Integration
L1/PHY
System
Design
Validation
System Level
RF Testing
BTS
or
Mobile Protocol Development
L2/L3
DigRF v4
Pre-Conformance
Network Deployment
Manufacturing
89600 VSA/WLA For Signal Analyzers, Scopes, LA
SystemVue and ADS
3D EM Simulation
SystemVue (BB)
ADS/GG (RF/A)
Scopes and
Logic Analyzers
Baseband
Generator and
Channel Emulator
Signal Studio
Software
RF Handheld Analyzers
Manufacturing
Test
N7109A Multi-Channel
Signal Analyzer
Battery Drain
Characterization
LTE UE Signalling
and Function Test
RF & Protocol test
Platforms
Signal Analyzers
54
N4010A Wireless
Connectivity Test Set
Power Measurement
Modular
Solutions
Agilent Solutions
© 2013 Agilent Technologies
Wireless Communications
55 © 2013 Agilent Technologies
Wireless Communications
MIMO Challenges
• 8x8 MIMO for LTE-Advanced Networks
- TM7 and TM8 for FDD
- TM9 (up to 8x8 MIMO)
- Support both FDD and TDD
- Support CSI-RS
Agilent 89600 VSA SW, Multi-Channel Signal Analyzer,
X-Series Signal Generators and Signal Studio SW
solve the 8x8 MIMO interference challenges
55
© 2013 Agilent Technologies
Wireless Communications
56 © 2013 Agilent Technologies
Wireless Communications
Summary
HetNet Introduction
HetNet Challenges
HetNet Solutions
56
© 2013 Agilent Technologies
Wireless Communications
57 © 2013 Agilent Technologies
Wireless Communications
Summary
• Wireless Technologies Keep Moving Forward With…
– Enhance Existing Wireless Capability with DC-HSPA, HSPA+
– Move to Faster, More Spectrum Efficient Technologies with LTE, LTE-Advanced,
WiMAX and 802.11ac
– Move Networks Closer to UEs with Heterogeneous Networks
• Heterogeneous Network Have Great Benefits to Improve
Network Coverage and Capacity with Lower Cost and Faster Deployments
• Also, Has Many Design and Test Challenges including Interference, SON,
and Lower the Production Cost
• Agilent Solves the LTE-Advanced Heterogeneous Networks Challenges
with Broad and Powerful Design and Test solutions
57
© 2013 Agilent Technologies
Wireless Communications
58 © 2013 Agilent Technologies
Wireless Communications
Organization Committee Description/Remark
3GPP RAN WG4/WG5, GERAN 3rd Generation Partnership Project UMTS & LTE
3GPP2-TIA CDMA/CDMA2000
IEEE Institute of Electrical and Electronics Engineers
ETSI Defines UMTS and LTE air interface for
UE/BTS
GCF SG and CAG Global Certification Forum
PTCRB PVG PCS Type Certification Board
TD Forum
Wi-Fi Alliance 60 GHz Technical Task Group
A trade association that promotes Wireless LAN
technology and certifies that products conform
to IEEE 802.11 standards.
WiMAX Forum CWG, TWG, NWG, STEG Certifies and promotes compatibility &
interoperability
Working with Industry Standards Bodies/Forums
Agilent’s measurement expertise helps to influence measurement needs,
set up the standards and test methodologies of…
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© 2013 Agilent Technologies
Wireless Communications
59 © 2013 Agilent Technologies
Wireless Communications
Organization Committee Description
Wireless Gigabit
Alliance
Interoperability Working
Group
Develops specs for audio, video and data
transmission in the 57-66GHz ISM band
WirelessHD
Consortium Body that oversees the WirelessHD specification
CTIA A-GPS Standards, MACSG
(MIMO OTA) Cellular Telecommunications Industry Association
Bluetooth SIG Multi
MIPI PHY, DWG, CWG, DigRF,
LLI, UniPro, TIG, Marketing Mobile Industry Protocol Interface
USB-Implementers
Forum
Organization to promote and support the
Universal Serial Bus
IWPC- International
Wireless Industry
Consortium
Covers wide variety of topics from femtocells to
next generation antenna designs
HDMI High Definition Multimedia Interface
59
Working with Industry Standards
Bodies/Forums
© 2013 Agilent Technologies
Wireless Communications
60 © 2013 Agilent Technologies
Wireless Communications
60
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www.agilent.com/find/lte
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Agilent Tools to Help You
© 2013 Agilent Technologies
Wireless Communications
THANK YOU!
62
Prepared by Jung-ik Suh
Wireless Marketing Program Manager
Electronic Measurement Group
Agilent Technologies, Inc.