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Comsys confidential and proprietary informationSubject to Mutual Confidentiality Agreement
The four W’s of LTEIMA Dec 2007
1(C) 2007 Comsys communication and Signal Processing Ltd.
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About Comsys
Cellular baseband solutions company Field proven solutionsOver 20 Million handsets using Comsys cellular technologies
Strategic partnerships with leading 1st tier customersThe only company with both 3GSM and WiMAX baseband products90 Employees & growingFocused on technological excellence
Comsys Enabled Devices
2(C) 2007 Comsys communication and Signal Processing Ltd.
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Comsys Solutions
200620042002 20082000
2.5G PHY IPEDGEware™
2G/3G System IPEGGware™
UEware™
4G Silicon/System ComMAX™
3(C) 2007 Comsys communication and Signal Processing Ltd.
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What is LTE? Technical perspective
OFDMAAll IP NW (EPS)
MIMO; MU-MIMO;
www.3gpp.org
Open/Close LoopPrecoding
4(C) 2007 Comsys communication and Signal Processing Ltd.
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What is LTE? Terminology
Air InterfaceLTE – Long Term Evolution (of 3G RAT)Equivalent “LTE” terminology:
3GPP release 8 !!!Super 3G (DoCoMo)
4G (actually 3.9G ☺)
NGMN – Next Generation Mobile NetworkBroadband (loose)
InfrastructureSAE – System Architecture Evolution (All IP cellular NW)EPS – Evolved Packet System (Core NW + RAN)EPC – Evolved Packet CoreE-UTRAN – Evolved Universal Terrestrial Radio Access Network
End PointsUE, eNB, and MME/UPE
5(C) 2007 Comsys communication and Signal Processing Ltd.
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3GPP Releases and Packet NW Evolution
UMTSR99
UMTSR99
GGSNGGSN
SGSNSGSN
RNCRNC
NodeBNodeB
HSDPAR5
HSDPAR5
GGSNGGSN
SGSNSGSN
RNCRNC
NodeBNodeB
HSUPAR6
HSUPAR6
GGSNGGSN
SGSNSGSN
RNCRNC
NodeBNodeB
HSPAR7
HSPAR7
HSPA+R7
HSPA+R7
LTER8
LTER8
User Plane
Control Plane
GGSNGGSN
SGSNSGSN
RNCRNC
NodeBNodeB
EPS-GWEPS-GW
aGW-MME
aGW-MME
eNodeBeNodeB
GGSNGGSN
SGSNSGSN
NodeBNodeB
2000 2002 2005 2007 (Stage 3)
6(C) 2007 Comsys communication and Signal Processing Ltd.
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What is LTE? Technical Objective
LTE Technical Objectives:Downlink Capacity: Instantaneous data rate of 100Mbps in 20Mhz (variable channel bandwidth)Uplink Capacity: Instantaneous data rate of 50Mbps in 20Mhz200 users per TRX at 5Mhz BWLatency: Less than 5ms in ideal conditionsUser throughput: 4-5 times HSDPA, 2-3 times HSUPAMobility:
Optimized for low speed but supporting 120kmh with high performanceMobility support up to 350Kmh
Support QoS
www.3gpp.org/Highlights/LTE/LTE.htm
7(C) 2007 Comsys communication and Signal Processing Ltd.
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Why LTE was invented?
Reducing the NW operators CAPEX and OPEX to enable:Broadband communicationShift from “bit” to “content” pricing modelFlat rate for broadband
NGN/NGMN: Applications and ServicesIP based NW (scalable and robust)IMS - IP Multimedia SubsystemEnd to End quality of service (QoS)
MBMS enhancements
Low Latency
WiMAX & UMB competition
8(C) 2007 Comsys communication and Signal Processing Ltd.
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LTE: Reduced CAPEX and OPEX
Flat NW architecture – less equipment, low latency IP based connectivity – Routers and GatewaysReuse of current cell-sites and antennaIncreased number of users and throughput per TRX
9(C) 2007 Comsys communication and Signal Processing Ltd.
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GSM vs. LTE: Cost comparison
GSM/GPRSGSM/GPRS HSPA HSPA RelRel 66 LTE @ 20MhzLTE @ 20Mhz
Equivalent Equivalent TRXTRX**
111111 1212
RNCRNC
2.5Mbps2.5Mbps
2.5/5=0.52.5/5=0.5
CS & PSCS & PS
11
NW HierarchyNW Hierarchy BSCBSC --
Cell Typical Cell Typical CapacityCapacity**
100Kbps100Kbps 30Mbps30Mbps
Spectral Spectral EfficiencyEfficiency****
100/200=0.5100/200=0.5 30/20=1.530/20=1.5
ModesModes CS & PSCS & PS PS onlyPS only
•* Source: Motorola•**DL only user peak results with different spectral efficiency figures
10(C) 2007 Comsys communication and Signal Processing Ltd.
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Enhanced Multimedia Broadcast Multicast Service (MBMS)
Co
st
Unicast
MBMSDVB-H
Extending Rel. 6 conceptPHY
Dedicated 40ms TTILonger symbols
7.5Khz spacing3 symbols per sub-frameExtended CP
MACSimultaneous MBMSand non-MBMS services
CapacitySingle-Cell Multi-Cell
Dedicated
Mixed
11(C) 2007 Comsys communication and Signal Processing Ltd.
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When Will I be able to use LTE?
Maturity Process Diagram of wireless technology
RequirementsRequirements SpecificationPhases 1,2,3
SpecificationPhases 1,2,3
TestSpec
TestSpec
TestValidation
TestValidation
EngineeringTrials
EngineeringTrials
CommercialTrials
CommercialTrials
NW sideNW side
HandsetHandset
TestEquipment
TestEquipment
12(C) 2007 Comsys communication and Signal Processing Ltd.
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Time line speculations…
13(C) 2007 Comsys communication and Signal Processing Ltd.
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Where is it going to be deployed?
$pectrum:IMT-2000/IMT-AdvanceLower band is a better band
Current vs. new spectrum
Deployment process options:National coverageGradual coverage
Cell sites
Source: O2
Source: Alcatel-Lucent
3G: 1800,1700/2100, 2500/2600 Mhz2G: 850, 900, 1800, 1900 MhzNew: 450, 700 MHz
14(C) 2007 Comsys communication and Signal Processing Ltd.
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Some Comments in General
Long Term Employment (LTE) – Good for EngineersLate Terminals Expected (LTE) – Remember the 5 years …
C3 Industry:CaptiveConsolidatingConservative
GPRS and UMTS lessons should be learned2G (GERAN) and 3G (UMTS/HSPA) will continue to evolve
15(C) 2007 Comsys communication and Signal Processing Ltd.
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Summary
WHATAll IP, OFDMA, MIMO and 3GPP
WHYCost, Communication and Competition
WHEN2010 … 2013
WHEREIMT2000 SpectrumSame cell sitesSAE/EPS NW nodes
16(C) 2007 Comsys communication and Signal Processing Ltd.
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www.comsysmobile.comWiMAX: [email protected]
+972 (54) 5677866
LTE: [email protected]+972 (54) 4956214