7.lte marketing and rf measurement
DESCRIPTION
hi..TRANSCRIPT
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LTE
Market and LTE RF measurement
Clark LinApplication and system supportRohde & Schwarz, Taiwan
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Auguest 2011 | LTE Market View | 2
2013/20142009/2010
Technology evolution pathGSM/GPRS
EDGE, 200 kHzDL: 473 kbpsUL: 473 kbps
EDGEevoDL: 1.9 MbpsUL: 947 kbps
HSDPA, 5 MHzDL: 14.4 MbpsUL: 2.0 Mbps
HSPA, 5 MHzDL: 14.4 MbpsUL: 5.76 Mbps
HSPA+, R7DL: 28.0 MbpsUL: 11.5 Mbps
2005/2006 2007/2008 2011/2012
HSPA+, R8DL: 42.0 MbpsUL: 11.5 Mbps
cdma2000
1xEV-DO, Rev. 0 1.25 MHzDL: 2.4 MbpsUL: 153 kbps
1xEV-DO, Rev. A 1.25 MHzDL: 3.1 MbpsUL: 1.8 Mbps
1xEV-DO, Rev. B 5.0 MHzDL: 14.7 MbpsUL: 4.9 Mbps
HSPA+, R9DL: 84 MbpsUL: 23 Mbps
DO-AdvancedDL: 32 Mbps and beyondUL: 12.4 Mbps and beyond
LTE-Advanced R10DL: 1 Gbps (low mobility)UL: 500 Mbps
Fixed WiMAXscalable bandwidth1.25 28 MHztypical up to 15 Mbps
Mobile WiMAX, 802.16eUp to 20 MHz DL: 75 Mbps (2x2)UL: 28 Mbps (1x2)
Advanced MobileWiMAX, 802.16mDL: up to 1 Gbps (low mobility)UL: up to 100 Mbps
VAMOSDouble SpeechCapacity
HSPA+, R10DL: 84 MbpsUL: 23 Mbps
LTE (4x4), R8+R9, 20MHzDL: 300 MbpsUL: 75 Mbps
UMTSDL: 2.0 MbpsUL: 2.0 Mbps
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Commercial LTE Networks26 commercial LTE systems are launched (09/2011)
MetroPCS(Sept 2010)
Telia Sonera(Dec 2009)
MTS/UCell(July/August 10)
Mobyland / CenterNet
(Sept 2010)
MobilkomAustria
(Oct 2010)
Net4Mobility (Nov 2010)
Verizon(Dec 2010)
NTTDoCoMo(Dec 2010)
Vodafone(Dec 2010)
Elisa(Dec 2010)
CSL(Nov 2010)
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LTE commercial network - details
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l Verizon Wireless Launches The Worlds Largest 4G LTE Wireless Network On Sunday, Dec. 5, 2010
l Verizon 4G LTE is available in over 117 markets and 98 major airportsl Plans to two-third of US population by mid-year 2012,and cover entire
existing nationwide 3G footprint with 4G LTE by end of 2013.l Verizon Wireless announced that Rohde & Schwarz
has been selected to provide test solutions for LTE device certification,http://news.vzw.com/news/2010/02/pr2010-02-16r.html
Verizon Wireless4G LTE
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Verizon Wireless4G LTE Phone
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Germany Digital DividendLTE 800 - Broadband Access in rural areas
l Deutsche Telekom starts nation wide LTE-Deployment Commercially launched their Call & Surf Comfort via FunkLTE service package in digital dividend (800 MHz) spectrum on April 5, 2011.
l Vodafone Germany to deploy LTE networkl Launched the first rural LTE mobile broadband
service across Germany on December 1, 2010. l Around 1,500 base stations incorporated LTE
technology by end March 2011, serving thousands of communities. LTE pilot locations have been established in Berlin. Vodafone plans to eventually upgrade all base stations in Germany to LTE.
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LTE - front runners pushing the wireless industry
l NTT DOCOMOLaunched Japans first commercial LTE system on December 24, 2010The company said that voice calls using Xi will become possible sometime within the fiscal year starting in April 2011Xi service was initially available in the Tokyo, Nagoya andOsaka areas; other major cities and regions will follow.
l China MobileChina Mobile has now launched large-scale LTE TDD trials consisting of more than 1,000 base stations in Beijing, Shanghai, Hangzhou, Nanjing, Guangzhou, Shenzhen, and Xiamen. Commercial services are expected to launch in 2012.
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The LTE eco-system is building upLTE FDD and TD-LTE
l Several LTE platforms have been announced by device and chipset manufacturers and were demonstrated to carriers and at trade shows
l Single mode (LTE) and multi mode (LTE/HSPA) modems are in the market
l All major infrastructure vendoroffer commercial equipment
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The LTE eco-system is building upLTE FDD and TD-LTE 161 LTE User Devices (July 29, 2011)
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The LTE eco-system is building upLTE FDD and TD-LTE 161 LTE User Devices (July 29, 2011)
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The LTE eco-system is building upLTE FDD and TD-LTE 161 LTE User Devices (July 29, 2011)
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The LTE eco-system is building upLTE FDD and TD-LTE 161 LTE User Devices (July 29, 2011)
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LTE Technology Introduction and LTE RF Measurement
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Contentl Introduction of LTE technologyl Test Requirement for LTEl LTE RF measurement
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Introduction ofLTE technology
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LTE Key Parameter
Multi-user collaborative MIMO
Wide choice of MIMO configuration options for transmit diversity, spatial multiplexing, and cyclic delay diversity (max. 4 antennas at base station and handset)
Downlink
75 Mbps (20 MHz)
150 Mbps (UE category 4, 2x2 MIMO, 20 MHz)300 Mbps (UE category 5, 4x4 MIMO, 20 MHz)Downlink
OFDMA (Orthogonal Frequency Division Multiple Access)DownlinkSC-FDMA (Single Carrier Frequency Division Multiple Access)
QPSK, 16QAM, 64QAMDownlinkQPSK, 16QAM, 64QAM ( optional for handset)
Uplink
MIMO technology
UplinkPeak Data Rate
UplinkMultiple Access
UplinkModulation Schemes
100 RB75 RB50 RB25 RB15 RB6 RB
20 MHz15 MHz10 MHz5 MHz3 MHz1.4 MHzChannel bandwidth 1 Resource Block (RB)=180 kHz
UMTS FDD bands and UMTS TDD bandsFrequency Range
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LTE UE categories (downlink and uplink)
436672001513763027525
21827072753761507524
21237248753761020483
2123724851024510242
125036810296102961
Maximum number of supported layers for
spatial multiplexing in DL
Total numberof soft
channel bits
Maximum number of bits of a DL-SCH transport block received a TTI
Maximum number of DL-SCH transport block bits received within TTI
UE category
MIMO = Multiple Input Multiple OutputUL-SCH = Uplink Shared ChannelDL-SCH = Downlink Shared ChannelUE = User EquipmentTTI = Transmission Time Interval
Yes753765
No510244
No510243
No254562
No51601
Support 64QAMin UL
Maximum number of UL-SCH transport block bits received within TTI
UE category~300 Mbps
peak DL data rate for 4x4 MIMO
~75 Mbps peakUL data rate
~150 Mbps peak DL data rate
for 2x2 MIMO
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Spectrum flexibility
TransmissionBandwidth [RB]
Transmission Bandwidth Configuration [RB]
Channel Bandwidth [MHz]
Resource block
Channel edge
Channel edge
DC carrier (downlink only)Active Resource Blocks
10075502515 6Number of resource blocks
20151053 1.4Channel bandwidth BWChannel [MHz]
l LTE physical layer /FDD/TDD) supports any bandwidth from 1.4 to 20 MHz,
l Current LTE specification supports a subset of 6 different system bandwidths,
l All UEs can support the maximum bandwidth of 20 MHz,
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3600 MHz-3510 MHz3500 MHz-3410 MHz22
1510.9 MHz-1495.9 MHz1462.9 MHz-1447.9 MHz21
821 MHz-791 MHz862 MHz-832 MHz20
E-UTRAOperating
Band
890 MHz875 MHz845 MHz830 MHz19
875 MHz860 MHz830 MHz815 MHz18
746 MHz734 MHz716 MHz704 MHz 17
768 MHz758 MHz798 MHz788 MHz14
756 MHz746 MHz787 MHz777 MHz13
746 MHz728 MHz716 MHz698 MHz12
1500.9 MHz1475.9 MHz1452.9 MHz1427.9 MHz 11
2170 MHz2110 MHz1770 MHz1710 MHz10
1879.9 MHz1844.9 MHz1784.9 MHz1749.9 MHz9
960 MHz925 MHz915 MHz880 MHz8
2690 MHz2620 MHz2570 MHz2500 MHz7
885 MHz875 MHz840 MHz830 MHz6
894MHz869 MHz849 MHz824 MHz5
2155 MHz2110 MHz1755 MHz 1710 MHz4
1880 MHz1805 MHz1785 MHz1710 MHz 3
1990 MHz1930 MHz1910 MHz1850 MHz 2
2170 MHz2110 MHz 1980 MHz1920 MHz 1
FDL_low FDL_highFUL_low FUL_high
Downlink (DL) operating bandBS transmit UE receive
Uplink (UL) operating band BS receive UE transmit
LTE/LTE-A Frequency Bands (FDD)
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3600 MHz-3510 MHz3500 MHz-3410 MHz22
1510.9 MHz-1495.9 MHz1462.9 MHz-1447.9 MHz21
821 MHz-791 MHz862 MHz-832 MHz20
E-UTRAOperating
Band
890 MHz875 MHz845 MHz830 MHz19
875 MHz860 MHz830 MHz815 MHz18
746 MHz734 MHz716 MHz704 MHz 17
768 MHz758 MHz798 MHz788 MHz14
756 MHz746 MHz787 MHz777 MHz13
746 MHz728 MHz716 MHz698 MHz12
1500.9 MHz1475.9 MHz1452.9 MHz1427.9 MHz 11
2170 MHz2110 MHz1770 MHz1710 MHz10
1879.9 MHz1844.9 MHz1784.9 MHz1749.9 MHz9
960 MHz925 MHz915 MHz880 MHz8
2690 MHz2620 MHz2570 MHz2500 MHz7
885 MHz875 MHz840 MHz830 MHz6
894MHz869 MHz849 MHz824 MHz5
2155 MHz2110 MHz1755 MHz 1710 MHz4
1880 MHz1805 MHz1785 MHz1710 MHz 3
1990 MHz1930 MHz1910 MHz1850 MHz 2
2170 MHz2110 MHz 1980 MHz1920 MHz 1
FDL_low FDL_highFUL_low FUL_high
Downlink (DL) operating bandBS transmit UE receive
Uplink (UL) operating band BS receive UE transmit
LTE/LTE-A Frequency Bands (FDD) Prioritized GCF frequency bands for LTE
Europe
Europe
US Verizon
Japan, (Europe)
Europe, (Asia)USAsia
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3600 MHz-3510 MHz3500 MHz-3410 MHz22
1510.9 MHz-1495.9 MHz1462.9 MHz-1447.9 MHz21
821 MHz-791 MHz862 MHz-832 MHz20
E-UTRAOperating
Band
890 MHz875 MHz845 MHz830 MHz19
875 MHz860 MHz830 MHz815 MHz18
746 MHz734 MHz716 MHz704 MHz 17
768 MHz758 MHz798 MHz788 MHz14
756 MHz746 MHz787 MHz777 MHz13
746 MHz728 MHz716 MHz698 MHz12
1500.9 MHz1475.9 MHz1452.9 MHz1427.9 MHz 11
2170 MHz2110 MHz1770 MHz1710 MHz10
1879.9 MHz1844.9 MHz1784.9 MHz1749.9 MHz9
960 MHz925 MHz915 MHz880 MHz8
2690 MHz2620 MHz2570 MHz2500 MHz7
885 MHz875 MHz840 MHz830 MHz6
894MHz869 MHz849 MHz824 MHz5
2155 MHz2110 MHz1755 MHz 1710 MHz4
1880 MHz1805 MHz1785 MHz1710 MHz 3
1990 MHz1930 MHz1910 MHz1850 MHz 2
2170 MHz2110 MHz 1980 MHz1920 MHz 1
FDL_low FDL_highFUL_low FUL_high
Downlink (DL) operating bandBS transmit UE receive
Uplink (UL) operating band BS receive UE transmit
LTE/LTE-A Frequency Bands (FDD) Prioritized PTCRB frequency bands for LTE
USUS VerizonUSUS AT&T
US, Metro PCSAsia
US, Sprint
US, Europe
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LTE/LTE-A Frequency Bands (TDD)
2400 MHz2300 MHz 2400 MHz2300 MHz 40
3600 MHz3400 MHz 3600 MHz3400 MHz 42
2690 MHz2496 MHz 2690 MHz2496 MHz 41
E-UTRAOperating
Band
3800 MHz3600 MHz 3800 MHz3600 MHz 43
1920 MHz1880 MHz 1920 MHz1880 MHz 39
2620 MHz2570 MHz2620 MHz2570 MHz 38
1930 MHz1910 MHz1930 MHz1910 MHz 37
1990 MHz1930 MHz1990 MHz1930 MHz 36
1910 MHz1850 MHz1910 MHz1850 MHz 35
2025 MHz2010 MHz 2025 MHz 2010 MHz34
1920 MHz1900 MHz1920 MHz1900 MHz33
FDL_low FDL_highFUL_low FUL_high
Downlink (DL) operating bandBS transmit UE receive
Uplink (UL) operating band BS receive UE transmit
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LTE/LTE-A Frequency Bands (TDD)
2400 MHz2300 MHz 2400 MHz2300 MHz 40
3600 MHz3400 MHz 3600 MHz3400 MHz 42
2690 MHz2496 MHz 2690 MHz2496 MHz 41
E-UTRAOperating
Band
3800 MHz3600 MHz 3800 MHz3600 MHz 43
1920 MHz1880 MHz 1920 MHz1880 MHz 39
2620 MHz2570 MHz2620 MHz2570 MHz 38
1930 MHz1910 MHz1930 MHz1910 MHz 37
1990 MHz1930 MHz1990 MHz1930 MHz 36
1910 MHz1850 MHz1910 MHz1850 MHz 35
2025 MHz2010 MHz 2025 MHz 2010 MHz34
1920 MHz1900 MHz1920 MHz1900 MHz33
FDL_low FDL_highFUL_low FUL_high
Downlink (DL) operating bandBS transmit UE receive
Uplink (UL) operating band BS receive UE transmit
GCFprioritizedfrequencybands for
LTE
Europe, China
China
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Test Requirement for LTE
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3GPP LTE Performance and Test Specificationsl Performance Specifications:
l TS 36.101 User Equipment (UE) radio transmission and receptionl TS 36.104 Base Station (BS) radio transmission and receptionl TS 36.133 Requirements for support of radio resource management
(RRM)l Test Specifications BS:
l TS36.141 Base Station (BS) conformance testingl Test Specifications UE:
l TS 36.521-1 (TX/RX/Performance requirements) Chapter 6 and 7 covers both FDD and TDD. Section 8 covers performance requirement test cases. The structure follows
the structure of TS 36.101 and separate FDD and TDD test case.l TS 36.521-3 (RRM)
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Test Requirementl Basically, test criteria of LTE UE follows
l TS 36.101 User Equipment (UE) radio transmission and receptionl TS 36.521-1 User Equipment (UE) conformance specification Radio
transmission and reception Part 1: Conformance Testing
l Test items scopel Transmitterl Receiverl Performancel Channel State Information
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Transmitter Characteristic
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Transmitter Characteristic
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Transmitter CharacteristicTransmitter Characteristics
6.6.2.3.1 Minimum requirement E-UTRA6.6.2.3.2 Minimum requirements UTRA6.6.2.4 Additional ACLR requirements
6.6.3.2 Spurious emission band UE co-existence6.6.3.3 Additional spurious emissions6.6.3.3.1 Minimum requirement (network signalled value "NS_05")
Minimum requirement (network signalled value NS_[08])6.7 Transmit intermodulation
6.6.2.3 Adjacent Channel Leakage Ratio
6.6.3 Spurious emissions
Minimum requirement (network signalled value NS_07)6.6.3.3.26.6.3.3.3
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Receiver Characteristic
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R&S CMW500Wideband Radio Communication TesterLTE RF Testing
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Measurements as usual?No! Multi-evaluation measurement for LTE FDD/TDD
Power, power control
Modulation
Spectrum
Resource AllocationTable
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Details LTE FDD and TD-LTE multi evaluation Tx measurements KM500, KM550l Supported measurements Modulation (see 3GPP TS36.521 9.2.x)
l EVM vs. sub-carrierl EVM, Magnitude error and Phase error vs. SC-FDMA Symboll EVM, Magnitude error and Phase error per slotl Frequency Errorl IQ Origin Offsetl Spectrum flatnessl IQ Constellation diagraml Inband emissions
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Spectral flatness
f
f0 f2f1 f3
Nominal subcarriers
Equalized subcarriers
Amplitude Equalizercoefficients
Integration of allAmplitude Equalizer Coefficients to displayspectral flatness curve
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Spectral flatness
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EVM vs. subcarrier
f
f0 f2f1 f3
Nominal subcarriers
Each subcarrier Modulated withe.g. QPSK
. . . .
Integration of allError Vectors to Display EVM curve
Error vector
Error vector
Limits: BPSK+QPSK (17.5%),16QAM (12.5%), 64QAM (tbd)
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EVM vs. subcarrier
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l 3 modulation accuracy requirementsl EVM for the allocated RBsl LO leakage for the centered RBsl I/Q imbalance in the image RBs
Impact on Tx modulation accuracy evaluation
frequency
RF carrier
RB0 RB1 RBN-1 RBN
Power level IQ component
EVM, Spectrum flatness
Frequency error |f| = 0.1ppm+15Hz
In-band emissions
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In-band emissions measurement
Used allocation < channel bandwidth
Channel bandwidth (e.g. 20 MHz = 100 RB)
l Estimate the interference to non-allocated resource blocks, as the UE shares transmission bandwidth with other UEs, l 3 types of in-band emissions: general, DC image and IQ image.
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Modulation quality: Constellation diagram
LTE PUSCH uses QPSK, 16QAM and 64 QAM modulation schemes. In UL there is only 1 schemeallowed per subframe
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Error Vector Magnitude (EVM)EVM vs. symbol
TimeFr
eque
ncy
1 SC-FDMA symbol1 Time Slot = 0.5 ms 7 SC-FDMA symbols (normal Cyclic Prefix (CP))
1 subframe = 1 ms [minimum Transmit Time Interval (TTI)]
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Error Vector Magnitude (EVM)EVM vs. Symbol How is this EVM measured?
EVMhighEVMlow
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Details LTE FDD and TD-LTE multi evaluation Tx measurements KM500, KM550l Supported measurements Power
l Peak Power (displayed in modulation measurements)l RB (recourse block) Power (displayed in Inband Emission meas.)l Transmit Power (displayed in modulation and SEM meas.)l Power vs. Subframe
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Tx power aspectsRB power = Ressource Block Power, power of 1 RBTX power = integrated power of all assigned RBs
TX power value correspondsto the maximum UE output power depending on the settings!
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Power vs. Subframe
l Basically power vs. Time measurementl Power can change on
TTI base(Subframe base)
l Analyse uplink power distribution
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Details LTE FDD and TD-LTE multi evaluation Tx measurements KM500, KM550l Supported measurements Spectrum (see 3GPP TS36.521 9.2.x)
l Adjacent Channel Power (ACP)l Occupied Bandwidth (OBW)l Spectrum Emission Mask (SEM)
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Output RF spectrum emissions
Spurious domain
RB
Channel bandwidth Spurious domain fOOB fOOB
E-UTRA Band
From modulation
process
Harmonics, parasitcemissions,
intermodulation and frequency conversion
Worst case:Resource Blocks allocated
up to/at channel edge
ACLRSEM
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LTE ACLR requirementsl UTRA ACLR 1+2 two 3G neighbors 5MHz eachl EUTRA ACLR one LTE neighbor up to 20MHzl EUTRA measured with rectangular filter
WCDMA measured with RRC filter
E-UTRAACLR1 UTRA ACLR2 UTRAACLR1
RB
E-UTRA channel
fOOB
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Adjacent Channel Leakage Ratio, ACLR
2 adjacent WCDMAcarriers, 5MHz BW
1 adjacent LTEcarrier, 20MHz BW
Active LTEcarrier, 20MHz BW
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Spectrum Emission Mask, SEM
99%
OBW: Occupied bandwidth, defined as 99% of power spectal density
1 MHz RBW
SEM: Spectrum Emission Mask, measured with different resolution bandwidth, 1 MHz (away from carrier) or 30 kHz (close to carrier) RBW
30 kHz RBW
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SEM limit definition
1 MHz-25 20-25
1 MHz-13 -25 15-20
1 MHz-13 -13 -25 10-15
1 MHz-13 -13 -13-25 6-10
1 MHz-13-13-13-13-25 5-6
1 MHz-10 -10-10-10-10-25 2.5-5
1 MHz-10 -10-10-10-10-10 1-2.5
30 kHz -21-20-18-15 -13-10 0-1
Measurement bandwidth
20MHz
15MHz
10MHz
5MHz
3.0MHz
1.4MHz
fOOB(MHz)
Spectrum emission limit (dBm)/ Channel bandwidth
Limits depend on channel bandwidth
Limitsdependent on offset from assigned BW
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time
frequency
QP
SK
, 16Q
AM
or 6
4QA
M m
odul
atio
nQ
PS
K, 1
6QA
M o
r 64Q
AM
mod
ulat
ion
UE1UE1
UE4UE4
UE3UE3
UE2UE2
UE5UE5
UE6UE6
*TTI = transmission time interval** For normal cyclic prefix duration
1 resource block =180 kHz = 12 subcarriers
1 slot = 0.5 ms = 7 SC-FDMA symbols** 1 subframe = 2 slots = 1ms= 1 TTI*
Subcarrier spacing = 15 kHz
Additional measurement RB allocation tablefrequency
time
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Additional measurement RB allocation table
l Recource Block allocationl UL recource block allocation
can change flexible over timel Depending on schedulingl E.g. used RMC settings
frequency
time
20MHz channel BW = 100 RBs max
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Details LTE FDD signaling Rx Measurements
l Rx MeasurementsCounting
ACKnowledgement(ACK)
NonACKnowledgement(NACK)
l CalculatingBLER (NACK/ALL)Throughput [kbps]
l FlexibilityChange paramters directly the measurement on the fly
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RX sensitivity level
FDD-97-100--6
FDD-95-98-100.2-104.25
FDD-94-95.2-97-100-102.2-106.24
FDD-91-92.2-94-97 -99.2-103.23
FDD-92-93.2-95-98 -100.2-104.22
FDD-94 -95.2 -97-100--1
Duplex Mode
20 MHz(dBm)
15 MHz(dBm)
10 MHz(dBm)
5 MHz(dBm)
3 MHz(dBm)
1.4 MHz(dBm)E-UTRA
Channel bandwidth
Criterion: throughput shall be > 95% of possible maximum(depend on RMC)
Sensitivity depends on band, channel bandwidth and RMC
under test
Extract from TS 36.521
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CMW500 LTE CMWrun
l CMWrun CMW-KT055 allows automated test of supported 36.521 test cases
l Automatically takescare about the 3GPP V9.5.0depending on installed SW version
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