5g and wireless measurements 20140320 v4 - caida · ofdma/scfdma 4g 100m-1gbps experiments super3g...
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5G and Wireless Measurements
DOCOMO Innovations, Inc.
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DOCOMO Innovations, Inc. confidential
History
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2000s2000 2005 2010
LTE/LTE‐Advanced
4GOFDMA/SCFDMA100M-1Gbps Experiments
Super3G Concept3G
1980 1985 1990
1GAnalogue Cellular
TDMAConcept
GSM/PDC/TDMA
2GPaper by Dr. KinoshitaICC’81 and IEEE Trans. VT, 1982
1980s
2010s2010 2015 2020
Now what?4G 5G?
1990s1990
2G1995 2000
WCDMA2Mbps Experiments 3G
WCDMA/CDMA2000
10Gbps Experiments at 11GHz
CDMAconcept
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It’s time to think about 5G
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2000s2000 2005 2010
LTE/LTE‐Advanced
4GOFDMA/SCFDMA100M-1Gbps Experiments
Super3G Concept3G
1980 1985 1990
1GAnalogue Cellular
TDMAConcept
GSM/PDC/TDMA
2GPaper by Dr. KinoshitaICC’81 and IEEE Trans. VT, 1982
1980s
2010s2010 2015 2020
Now4G 5G?
1990s1990
2G1995 2000
WCDMA2Mbps Experiments 3G
WCDMA/CDMA2000
10Gbps Experiments at 11GHz
CDMAconcept
DOCOMO Innovations, Inc. confidential
Future Radio Access towards 5G
1000x capacity
10-100x data rates
Our vision of 1000x capacity and 10-100x data rates will bring dramatic UXimprovement for users in 2020.
in 2020
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Keys for 5G
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Frequency800 MHz 2 GHz 3 GHz 10 GHz 60 GHz
BUT, No one knows how to use higher frequency bands as Cellular
How should we use Higher Frequency Bands???
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FRA (Future Radio Access): Combined usage of lower andhigher frequency bands
Concept – DOCOMO’s 5G
Existing cellular bands(high power density for coverage)
Higher frequency bands(wider bandwidth for high data rate)
Frequency
Very wide(e.g. > 3GHz)
Super wide(e.g. > 10GHz)
DOCOMO’s 5G ConceptFurther cellular enhancements
Exploitation of higher frequency bands
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In Summary
7
Spectrum Efficiency
Current CapacitySpectrum Extension
Controller
TRx
TRx
TRx
TRx
TRx
TRx
TRx
TRx
Massive MIMO
700MHz~Higher frequency
bands
F
Small Cells (Phantom Cells)© 2014 DOCOMO Innovations, Inc. All rights reserved.3/24/2014
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From a Deployment point of view
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Future Small Cell NW
Conventional Cellular NW
BS
Massive MIMO
No one knows where/ how future small cells/ massive MIMO cells should be deployed in 5G NW.
Operation cost would increase as the number of cells increases.
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That is,
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Deployments would be more and more important in 5G NW.
Conventional wireless measurements would not be good enough for 5G deployments.
Future Wireless Measurements should be targeted to 5G NW and 5G deployments.
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BACKUP SLIDES
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C-plane: Macro cell maintains good connectivity and mobility using lower frequency bands
U-plane: Small cell provides higher throughput and more flexible/cost-energy efficient operations using higher/wider frequency bands
Existing cellular bands
Higher frequency bands
Macro cell
Phantom cell
[1] NTT DOCOMO, 3GPP RWS-120010, June 2012.[2] H. Ishii et al., IEEE Globecom 2012 Workshop, Dec. 2012.
Phantom Cell ConceptPhantom Cell Concept: DOCOMO proposed this architecture to utilizehigher frequency bands through splitting macro and small cells for C-planeand U-plane in different frequency bands [1, 2]
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Massive MIMO (Multiple-Input Multiple-Output)Massive MIMO: Beamforming using massive antenna elements inhigher frequency band for gain and capacity improvement
– 4G LTE (today) : 2 antennas (at device) x 2 antennas (at base station)– 5G : hundreds of antennas at base station!
Antenna element spacing
(d)
3.5 GHz(= 8.6
cm)
10 GHz(= 3 cm)
20 GHz(= 1.5
cm)0.5 16 169 6760.7 9 81 361
5G Massive MIMOMigration
: : ::
20cm
20cm
e.g. Massive MIMO 2D antenna configuration
d
Cell range extension by beamforming gain
Improved spectrum efficiency with (multi-user) spatial multiplexing
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