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1 Nokia Siemens Networks HH / 08.08.08
GSM to Wimax ScenarioTanzania Market Data
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GSM to LTE business case with NSNTanzania Market data
LTE / November 2009
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2008 2009 2010
Flexi WCDMA BTS 900
Refarming Solution (4.2MHz)
Single Mode WCDMA 2100
Flexi WCDMA
Single Mode
Flexi EDGE BTSTraditional
GSM/EDGEbands
(e.g. 850,900,1800,1900)
WCDMALTE
(e.g. 700, 2100, 2600)
20122011
Flexi Multiradio BTS
WCDMA/LTE
Flexi Multiradio BTS
GSM/WCDMA/LTE
2020
Flexi Base stationunique site solutionsoftware defined migration to LTE
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LTE refarming to 900/1800 MHz frequency bands
Introduction of LTE services into
frequency band that is already usedfor GSM
In order to fit the LTE carriers intosame bandwidth, typically spectrumefficiency needs to be improved
900/1800 MHz band
2100/2600 MHz bands
= LTE= GSM after refarming
LTE
Operators current GSM bandwidth
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Exemplary cell ranges comparison for
Urban EnvironmentGSM Coverage:
GSMvoice*More advanced radio technology:
- higher allowable path loss
- minimal difference in cell range
HSPA
LTE
Multi-radio introductionreusing existing network gridLTE 2600, UMTS 2100 on GSM 1800MHz grid (urban sites)
LTE-2600, UMTS-2100 and GSM-1800 can be deployed on same grid
GSMHSPA 2100MHz
LTE 2600MHz
GSM 1800MHz
General Assumptions:
Urban Environment,
indoor coverage (15 dB)WCDMA 5, LTE 10MHz bandwidth
Dedicated antennas for 2100, 2600
Cell rangeLink budget (MAPL)
UL DL
GSM1800 - km
dB
0.97
135.8
1.34
140.7WCDMA - km
dB
1.17
140.2
1.22
140.8
LTE2600 - km
dB
1.08
142.8
1.09
142.9
* 3 dB body loss
Cell BorderCell Border
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LTE FrequencyRefarming on 900/1800 MHz(5 MHz lllustration example)
LTE 5 MHz
24 GSM carriers
2.7 MHz
LTE 5 MHz (4.6 MHz)
2.5 MHz
= GSM carrier by the same operator
= guard carrier
= GSM carrier by a different operator
GSM only operation in 5 MHz
LTE 5 MHz in uncoordinatedcase1(different sites than
GSM)min.26 GSM carriers required
LTE 5 MHz in coordinated case(same sites than GSM = sameoperator)
min.23 GSM carriers required
= LTE carrier1Uncoordinated case based on 36.101narrowband blocking requirements
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Devices:Nokia trials first internet modemsupporting LTE
September 7, 2009 - NokiaPressServices
Nokia today introduced its first ever Long Term Evolution (LTE) capable internetmodem, which is based on Nokias own LTE modem technology development.The Nokia Internet Modem RD-3 is available to be used in LTE technology developmentwith various network vendors, measurement equipment manufacturers and operators.
Nokia is committed to supporting industry activities aimed at maturing LTEtechnology to enable the first commercial networks to launch in 2010,says JaniMenp, Project Manager, LTE/SAE Interoperability and Trials, Nokia. Nokia is afounding member in the LTE/SAE Trial Initiative (LSTI) and carries out interoperabilitytesting with a number of network vendors, collaborates with measurement equipmentmanufacturers and is ready to support operators with their LTE deployment activities. TheNokia Internet Modem RD-3 is used in all these activities.
Nokia Internet Modem RD-3 supports interoperability with GSM/EDGE andWCDMA/HSPA to make the most out of the global GSM and WCDMA reach right
from the startNokia Internet Modem RD-3 also supports multiple LTE frequency bands so isable to meet operators deployment plans across many different countries andregions.
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Devices: LTE Device Industry SnapshotCommercial, standard-compliant devices expected 2H/2010
2009 2010 2011
F FPGA platform A ASIC test platform A commercial ASIC product chipset USB-dongle
F FA A
F A Atrial
trial
A AA
F F A A A A Atrial CDMA HSPA
trialsF F A A A
AAF
AF
A A
trialF A A
F F A A A
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LTE vs Wimax Comparison
Peak data ratedownlink 2x2 MIMO
Duplexing
Main frequencies(excl Japan)
Spectral efficiency
Suburban cell size
USB modems and
integrated laptops
LTE Release 9 WiMAX
150 Mbps 20 MHz300 Mbps 4x4 MIMO
40 Mbps 10 MHz80 Mbps 20 MHz
FDD and TDD TDD
700, 800, 1800, 2300,2600 (3500 later)
2300, 2600, 3500
1.7 bps/Hz/cell 1.4 bps/Hz/cell
4 km (indoor)8 km (outdoor)
800 MHz
1.3 km (indoor)2.6 km (outdoor)
2600 MHz
Starting end-2010Operator pricing 60-80
USD
Yes, LTE-Advanced in3GPP Release 10
802.16mEvolution path
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LTE vs Wimax Comparison (2)
Handheld terminals
GSM/EDGEinterworking
Technologyharmonization
LTE Release 9 WiMAX
Yes, expected starting2012 in the high end
Unclear
Yes No
HSPA and LTEharmonized
Follows same 3GPPecosystemEcosystem size
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Points to Consider
Peak data rates are similar in HSPA/LTE and in WiMAX with the same amountof spectrum.
HSPA uses only FDD. WiMAX uses only TDD. LTE has harmonized FDD andTDD options.
WiMAX is the only TDD solution now before TD-LTE is available by 2011
LTE will eventually be available on all existing WiMAX frequencies including2300 and 3500.
Low frequency FDD is better for coverage than high frequency TDD. HSPA900and LTE800 are best for coverage.
LTE has highest spectral efficiency, 20-50% more than HSPA or WiMAX
HSPA has the benefit of low cost terminals and smart phones like iPhone andGoogle G1.
HSPA and LTE are harmonized = all LTE terminals include HSPA. Same Flexi
HW for HSPA and LTE. No such harmonization with WiMAX.HSPA/LTE chips have in-built GSM/EDGE capability
HSPA/LTE has by far the largest device eco-system pushing prices down.WiMAX ecosystem looks less clear.
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