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© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 1
Tetsushi Abe, NTT DOCOMO3GPP TSG-RAN1 Vice-Chairman
3GPP Self-evaluation Methodology and Results
“Self-evaluation Results”
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 2
3GPP Self-evaluation for LTE-AdvancedSummary
The 3GPP self-evaluation has shown that the LTE Release 10 & beyond (LTE-Advanced) SRIT and the individual FDD RIT and TDD RIT components completely satisfy the criteria of Step 7 and should move forward to Step 8 of the process. In particular, the SRIT and the individual FDD RIT and TDD RIT components meet all the requirements in all four of the four defined test environments.The evaluation results were based on the rigorous calibration effort.
RIT: Radio Interface Technology SRIT: Sets of RIT
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 3
Outline
1. Main assumptions (Recap)1.1 Evaluated DL schemes1.2 Evaluated UL schemes1.3 DL control overhead assumptions
2. Results: Peak spectrum efficiency 2.1 DL peak spectrum efficiency 2.2 UL peak spectrum efficiency
3. Results: Full-buffer spectrum efficiency3.1 Indoor (InH)3.2 Microcellular (UMi)3.3 Base coverage urban (UMa)3.4 High speed (RMa)
4. Results: VoIP4.1 FDD4.2 TDD
5. Results: Mobility5.1 FDD5.2 TDD
6. Simulator calibration7. Conclusion
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 4
Outline
1. Main assumptions (Recap)1.1 Evaluated DL schemes1.2 Evaluated UL schemes1.3 DL control overhead assumptions
2. Results: Peak spectrum efficiency 2.1 DL peak spectrum efficiency 2.2 UL peak spectrum efficiency
3. Results: Full-buffer spectrum efficiency3.1 Indoor (InH)3.2 Microcellular (UMi)3.3 Base coverage urban (UMa)3.4 High speed (RMa)
4. Results: VoIP4.1 FDD4.2 TDD
5. Results: Mobility5.1 FDD5.2 TDD
6. Simulator calibration7. Conclusion
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 5
1.1 Evaluated downlink schemes(Full-buffer spectrum efficiency)
Coordinated scheduling/beamformingCoMP (CS/CB-CoMP)
Joint processing CoMP(JP-CoMP)
Single-user MIMO (SU-MIMO)
Multi-user MIMO (MU-MIMO)
Ex)
Ex) Ex)Ex)Suppress / Avoid
Various schemes have been evaluated
Single-layer beamforming(Single-layer BF)Ex)
LTE Rel-8
LTE-Advanced
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 6
1.2 Evaluated uplink schemes (Full-buffer spectrum efficiency)
Single-input multiple-output (SIMO)
Multi-user MIMO (MU-MIMO)
Single-user MIMO (SU-MIMO)MU-MIMO
CoMP
Ex) Ex)
Ex) Ex)
Various schemes have been evaluated
LTE Rel-8
LTE-Advanced
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 7
1.3 DL control channel overhead assumption
DL control Data
1 subframe = 1.0 msec = 14 OFDM symbols
L: OFDM symbols (L=1, 2, 3)
Downlink performances have been evaluated taking into account the downlink overhead for L = 1, 2 and 3 casesDynamic assignment of L is supported already in the Rel. 8 specification
Average overhead depends on the environments
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 8
Outline
1. Main assumptions (Recap)1.1 Evaluated DL schemes1.2 Evaluated UL schemes1.3 DL control overhead assumptions
2. Results: Peak spectrum efficiency 2.1 DL peak spectrum efficiency 2.2 UL peak spectrum efficiency
3. Results: Full-buffer spectrum efficiency3.1 Indoor (InH)3.2 Microcellular (UMi)3.3 Base coverage urban (UMa)3.4 High speed (RMa)
4. Results: VoIP4.1 FDD4.2 TDD
5. Results: Mobility5.1 FDD5.2 TDD
6. Simulator calibration7. Conclusion
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 9
2.1 Downlink peak spectrum efficiency
DL peak spectrum efficiency for FDD
30.68-layer spatial multiplexing
16.3Rel. 8 4-layer spatial multiplexing
15ITU-R RequirementSpectral efficiency [b/s/Hz]Scheme
DL peak spectrum efficiency for TDD
30.08-layer spatial multiplexing
16.0Rel. 8 4-layer spatial multiplexing
15ITU-R RequirementSpectral efficiency [b/s/Hz]Scheme
LTE Rel. 8 fulfills ITU-R requirementsFurther improved performance can be achieved by using additional technology features (8-layer spatial multiplexing)
Assumptions4 layers (LTE Rel-8) 8 layers (LTE-A) 1 symbols for DL control channelCommon RS (LTE Rel-8)Common + Demodulation RS (LTE-A) PBCH and Sync. Signal overheadFor TDD,
4 DL : 2 SP : 4 UL12 DwPTS : 1 GP : 1 UpPTS
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 10
2.2 Uplink peak spectrum efficiency
UL peak spectral efficiency for FDD
16.84 layer spatial multiplexing
8.42 layer spatial multiplexing
6.75ITU-R RequirementSpectral efficiency [b/s/Hz]Scheme
UL peak spectral efficiency for TDD
16.14 layer spatial multiplexing
8.12 layer spatial multiplexing
6.75ITU-R RequirementSpectral efficiency [b/s/Hz]Scheme
LTE-A with 2-layer spatial multiplexing fulfills ITU-R requirementsFurther improved performance can be achieved by using additional technology features (4-layer spatial multiplexing)
Assumptions2 layers 4 layersUL control channel (1 PRB / 10MHz / 1 msec)Physical random access channel (6 PRB / 10MHz / 10 msec)
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 11
Outline
1. Main assumptions (Recap)1.1 Evaluated DL schemes1.2 Evaluated UL schemes1.3 DL control overhead assumptions
2. Results: Peak spectrum efficiency 2.1 DL peak spectrum efficiency 2.2 UL peak spectrum efficiency
3. Results: Full-buffer spectrum efficiency3.1 Indoor (InH)3.2 Microcellular (UMi)3.3 Base coverage urban (UMa)3.4 High speed (RMa)
4 Results: VoIP4.1 FDD4.2 TDD
5. Results: Mobility5.1 FDD5.2 TDD
6. Simulator calibration7. Conclusion
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 12
3.1 Indoor (InH) results
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 13
0.24
0.190.23 0.26
0.21 0.22
0
0.05
0.1
0 .15
0.2
0 .25
0.3
Rel-8 SU-MIMO 4 x 2 (A)L = 1, 2, 3
MU-MIMO 4 x 2 (C )L = 1, 2, 3
Cell
edge
(bps/H
z)
Spectrum Effic iency: FDD DL, Indoor (InH)
4.8
6.1
4.1
5.56.6
4.5
01234567
Cell
avera
ge
(bps/H
z/cell)
LTE Rel. 8 with SU-MIMO 4x2 (even with maximum DL control overhead(L = 3)) fulfills ITU-R requirementsFurther improved performance can be achieved by using additional technology features (MU-MIMO 4x2)
3.0
0.1
3.1 Indoor environment (Downlink, FDD)
ITU-R requirement
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 14
Spectrum Efficiency: TDD DL, Indoor (InH)
4.7
6.7 6.1
4.4
5.6
4.1
01234567
Cell
avera
ge
(bps/H
z/cell)
3.1 Indoor environment (Downlink, TDD)LTE Rel. 8 with SU-MIMO 4x2 (even with maximum DL control overhead(L = 3)) fulfills ITU-R requirementsFurther improved performance can be achieved by using additional technology features (MU-MIMO 4x2)
0.220.19
0.22 0.240.2 0.2
0
0.05
0.1
0.15
0.2
0.25
0.3
Rel-8 SU-MIMO 4 x 2 (A)L = 1, 2, 3
MU-MIMO 4 x 2 (C)L = 1, 2, 3
Cell
edge
(bps/H
z)
3.0
0.1
ITU-R requirement
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 15
0.250.23 0.24
0.42
00.10.20.30.40.5
Rel-8 SIMO 1x4 (A) Rel-8 SIMO 1x4 (C) Rel-8 MU-MIMO 1x4(A)
SU-MIMO 2 x 4 (A)
Cell
Edge
(bps/H
z)
Spectrum Efficiency: FDD UL, Indoor (InH)
4.33.33.3
5.8
0123456
Cell
avera
ge
(bps/H
z/cell)
LTE Rel. 8 with SIMO 1x4 fulfills ITU-R requirementsFurther improved performance can be achieved by using additional technology features (e.g., LTE Rel. 8 MU-MIMO 1x4, SU-MIMO 2x4)
3.1 Indoor environment (Uplink, FDD)
ITU-R requirement
2.25
0.07
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 16
0.250.22 0.23
0.39
00.10.20.30.40.5
Rel-8 SIMO 1x4 (A) Rel-8 SIMO 1x4 (C) Rel-8 MU-MIMO 1x4 (A) SU-MIMO 2 x 4 (A)
Cell
Edge
(bps/H
z)
Spectrum Efficiency: TDD UL, Indoor (InH)
3.93.13.1
5.5
0123456
Cell
avera
ge
(bps/H
z/cell)
LTE Rel. 8 with SIMO 1x4 fulfills ITU-R requirementsFurther improved performance can be achieved by using additional technology features (e.g., LTE Rel. 8 MU-MIMO 1x4, SU-MIMO 2x4)
3.1 Indoor environment (Uplink, TDD)
ITU-R requirement
2.25
0.07
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 17
3.2 Microcellular (UMi) results
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 18
Spectrum Efficiency: FDD DL, Microcellular (UMi)
4.5
3.63.43.54.1
3.33.13.23.7
32.82.9
0
1
2
3
4
5
Cell
avera
ge
(bps/H
z/cell)
0.120.11
0.14
0.110.099
0.13
0.087 0.089
0.120.1 0.096 0.099
0
0.05
0.1
0.15
MU-MIMO 4 x 2 (C)L = 1, 2, 3
MU-MIMO 4x2 (A)L = 1, 2, 3
CS/CB-CoMP4x2(C)L = 1, 2, 3
JP-CoMP 4 x 2 (C)L = 1, 2, 3
Cell
edge
(bps/H
z)
3.2 Microcellular environment (Downlink, FDD)Extension of LTE Rel. 8 with MU-MIMO 4x2 (even with maximum DL control overhead (L = 3)) fulfills ITU-R requirementsFurther improved performance can be achieved by using additional technology features (e.g., CS/CB-CoMP 4x2, JP-CoMP 4x2)
2.6
0.075
ITU-R requirement
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 19
Spectrum Efficiency: TDD DL, Microcellular (UMi)4.6
3.63.23.5
4.2
3.32.9
3.23.9
3.12.7
3
0
1
2
3
4
5
Cell
avera
ge
(bps/H
z/cell)
0.110.1 0.10.1
0.092 0.0920.089 0.085
0.110.096 0.095
0.086
0
0.05
0.1
0.15
MU-MIMO 4 x 2 (C)L = 1, 2, 3
MU-MIMO 4x2 (A)L = 1, 2, 3
CS/CB-CoMP4x2(C)L = 1, 2, 3
JP-CoMP 4 x 2 (C)L = 1, 2, 3
Cell
edge
(bps/H
z)
Extension of LTE Rel. 8 with MU-MIMO 4x2 (even with maximum DL control overhead (L = 3)) fulfills ITU-R requirementsFurther improved performance can be achieved by using additional technology features (e.g., CS/CB-CoMP 4x2, JP-CoMP 4x2)
3.2 Microcellular environment (Downlink, TDD)
2.6
0.075
ITU-R requirement
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 20
0.0860.0770.073
00.020.040.060.08
0.1
Rel-8 SIMO 1 x 4 (C) Rel-8 MU-MIMO 1 x 4 (A) MU-MIMO 2 x 4 (A)
Cell
Edge
(bps/H
z)
Spectrum Efficiency: FDD UL, Microcellular (UMi)
2.51.9
2.5
0
1
2
3
4
Cell
avera
ge
(bps/H
z/cell)
LTE Rel. 8 with SIMO 1x4 fulfills ITU-R requirementsFurther improved performance can be achieved by using additional technology features (e.g., LTE Rel. 8 MU-MIMO 1x4, MU-MIMO 2x4, and MU-MIMO 1x8)
3.2 Microcellular environment (Uplink, FDD)
1.8
0.05
ITU-R requirement
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 21
0.0790.07 0.071 0.068
00.020.040.060.08
0.1
Rel-8 SIMO 1 x 4 (C) Rel-8 MU-MIMO 1 x 4(A)
MU-MIMO 2 x 4 (A) MU-MIMO 1 x 8 (E)
Cell
Edge
(bps/H
z)
Spectrum Efficiency: TDD UL, Microcellular (UMi)
2.32.8
3
1.9
0
1
2
3
4
Cell
avera
ge
(bps/H
z/cell)
LTE Rel. 8 with SIMO 1x4 fulfills ITU-R requirementsFurther improved performance can be achieved by using additional technology features (e.g., LTE Rel. 8 MU-MIMO 1x4, MU-MIMO 2x4, and MU-MIMO 1x8)
3.2 Microcellular environment (Uplink, TDD)
1.8
0.05
ITU-R requirement
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 22
3.3 Base coverage urban (UMa) results
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 23
0.080.0810.079 0.0730.0740.073 0.0660.066 0.067
0
0.05
0.1
MU-MIMO 4 x 2 (C)L = 1, 2, 3
CS/CB-CoMP 4 x 2 (C)L = 1, 2, 3
JP-CoMP 4 x 2 (A)L = 1, 2, 3
Cell
edge
(bps/H
z)
Spectrum Efficiency: FDD DL, Base coverage urban (UMa)
32.92.8 2.72.62.6 2.52.42.4
0
1
2
3
4
Cell
avera
ge
(bps/H
z/cell)
Extension of LTE Rel. 8 with MU-MIMO 4x2 (even with maximum DL control overhead (L = 3)) fulfills ITU-R requirementsFurther improved performance can be achieved by using additional technology features (e.g., CS/CB-CoMP 4x2, JP-CoMP 4x2)
3.3 Base coverage urban environment (Downlink, FDD)
2.2
0.06
ITU-R requirement
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 24
0.090.0830.079 0.0820.0750.071 0.0760.067 0.07
0
0.05
0.1
MU-MIMO 4 x 2 (C)L = 1, 2, 3
CS/CB-CoMP 4 x 2 (C)L = 1, 2, 3
JP-CoMP 4 x 2 (C)L = 1, 2, 3
Cell
edge
(bps/H
z)
Spectrum Efficiency: TDD DL, Base coverage urban (UMa)
3.6
2.92.93.3
2.62.63.1
2.42.4
0
1
2
3
4
Cell
avera
ge
(bps/H
z/cell)
3.3 Base coverage urban environment (Downlink, TDD)
2.2
0.06
ITU-R requirement
Extension of LTE Rel. 8 with MU-MIMO 4x2 (even with maximum DL control overhead (L = 3)) fulfills ITU-R requirementsFurther improved performance can be achieved by using additional technology features (e.g., CS/CB-CoMP 4x2, JP-CoMP 4x2)
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 25
0.0990.086
0.062
0
0.05
0.1
0.15
Rel-8 SIMO 1 x 4(C) CoMP 1 x 4 (A) CoMP 2 x 4 (C)
Cell
Edge
(bps/H
z)
Spectrum Efficiency: FDD UL, Base coverage urban (UMa)
1.71.5
2.1
0
1
2
3
Cell
avera
ge
(bps/H
z/cell)
LTE Rel. 8 with SIMO 1x4 fulfills ITU-R requirementsFurther improved performance can be achieved by using additional technology features (e.g., CoMP 1x4, CoMP 2x4)
3.3 Base coverage urban environment (Uplink, FDD)
1.4
0.03
ITU-R requirement
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 26
0.0760.062
0.09 0.097
0
0.05
0.1
0.15
Rel-8 SIMO 1x4 (C) CoMP 1 x 4 (C) CoMP 2 x 4 (C) MU-MIMO 1 x 8 (E)
Cell
Edge
(bps/H
z)
Spectrum Efficiency: TDD UL, Base coverage urban (UMa)
1.92
2.7
1.5
0
1
2
3
Cell
avera
ge
(bps/H
z/cell)
LTE Rel. 8 with SIMO 1x4 fulfills ITU-R requirementsFurther improved performance can be achieved by using additional technology features (e.g., CoMP 1x4, CoMP 2x4)
3.3 Base coverage urban environment (Uplink, TDD)
1.4
0.03
ITU-R requirement
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 27
3.4 High speed (RMa) results
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 28
0.067 0.0630.0690.081
0.11
0.076
0.099
0.057
0.09
0
0.05
0.1
0.15
Rel-8 SU-MIMO 4 x 2 (C)L = 1, 2, 3
Rel-8 SU-MIMO 4 x 2 (A)L = 1, 2, 3
MU-MIMO 4 x 2 (C)L = 1, 2, 3
Cell
edge
(bps/H
z)
Spectrum Efficiency: FDD DL, High speed (RMa)
2.12.3
3.9 3.5
22.1
3.2
1.81.9
0
1
2
3
4
Cell
avera
ge
(bps/H
z/cell)
LTE Rel. 8 with SU-MIMO 4x2 (even with maximum DL control overhead (L = 3)) fulfills ITU-R requirementsFurther improved performance can be achieved by using additional technology features (e.g., MU-MIMO 4x2)
3.4 High Speed Environment (Downlink, FDD)
1.1
0.04
ITU-R requirement
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 29
0.057
0.098
0.072
0.053
0.0890.067 0.063
0.083
0.049
0
0.05
0.1
0.15
Rel-8 SU-MIMO 4 x 2 (C)L = 1, 2, 3
Rel-8 SU-MIMO 4 x 2 (A)L = 1, 2, 3
MU-MIMO 4 x 2 (C)L = 1, 2, 3
Cell
edge
(bps/H
z)
Spectrum Efficiency: TDD DL, High speed (RMa)
3.5
1.92
3.2
1.71.9
3
1.61.8
0
1
2
3
4
Cell
avera
ge
(bps/H
z/cell)
LTE Rel. 8 with SU-MIMO 4x2 (even with maximum DL control overhead (L = 3)) fulfills ITU-R requirementsFurther improved performance can be achieved by using additional technology features (e.g., MU-MIMO 4x2)
3.4 High Speed Environment (Downlink, TDD)
ITU-R requirement
1.1
0.04
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 30
0.13
0.0970.082
0
0.05
0.1
0.15
Rel-8 SIMO 1x4 (C) Rel-8 MU-MIMO 1x4 (A) CoMP 2 x 4 (A)
Cell
Edge
(bps/H
z)
Spectrum Efficiency: FDD UL, High speed (RMa)
2.21.8
2.3
0
1
2
3
Cell
avera
ge
(bps/H
z/cell)
LTE Rel. 8 with SIMO 1x4 fulfills ITU-R requirementsFurther improved performance can be achieved by using additional technology features (e.g., Rel-8 MU-MIMO 1x4, CoMP 2x4)
3.4 High Speed Environment (Uplink, FDD)
ITU-R requirement
0.7
0.015
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 31
0.10.08 0.093
0.15
0
0.05
0.1
0.15
Rel-8 SIMO 1 x 4 (C) Rel-8 MU-MIMO 1 x 4(A)
CoMP 2 x 4 (A) MUMIMO 1 x 8 (E)
Cell
Edge
(bps/H
z)
Spectrum Efficiency: TDD UL, High speed (RMa)
2.12.5
2.6
1.8
0
1
2
3
Cell
avera
ge
(bps/H
z/cell)
ITU-R requirement
0.7
0.015
LTE Rel. 8 with SIMO 1x4 fulfills ITU-R requirementsFurther improved performance can be achieved by using additional technology features (e.g., Rel-8 MU-MIMO 1x4, CoMP 2x4)
3.4 High Speed Environment (Uplink, TDD)
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 32
Outline
1. Main assumptions (Recap)1.1 Evaluated DL schemes1.2 Evaluated UL schemes1.3 DL control overhead assumptions
2. Results: Peak spectrum efficiency 2.1 DL peak spectrum efficiency 2.2 UL peak spectrum efficiency
3. Results: Full-buffer spectrum efficiency3.1 Indoor (InH)3.2 Microcellular (UMi)3.3 Base coverage urban (UMa)3.4 High speed (RMa)
4 Results: VoIP4.1 FDD4.2 TDD
5. Results: Mobility5.1 FDD5.2 TDD
6. Simulator calibration7. Conclusion
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 33
Number of VoIP Users, FDD140
80
68
91
69
94
131
75
0102030405060708090
100110120130140150
Indoor(A) and (C)
Urban Micro (A) and (C)
Urban Macro(A) and (C)
High Speed(A) and (C)
Capacit
y (
user/
MH
z/cell)
4.1 VoIP results (FDD)
Evaluated schemesDL: Rel. 8 (4x2, 1x2) UL: Rel. 8 (1x4 )
LTE Rel. 8 fulfills ITU-R requirements for all the environments
ITU-R requirement
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 34
Number of VoIP Users, FDD
137
7465
86
67
92
74
130
0102030405060708090
100110120130140150
Indoor(A) and (C)
Urban Micro (A) and (C)
Urban Macro(A) and (C)
High Speed(A) and (C)
Capacit
y (
user/
MH
z/cell)
4.2 VoIP results (TDD)
Evaluated schemesDL: Rel. 8 (4x2 or 1x2) UL: Rel. 8 (1x4)
LTE Rel. 8 fulfills ITU-R requirements for all the environments
ITU-R requirement
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 35
Outline
1. Main assumptions (Recap)1.1 Evaluated DL schemes1.2 Evaluated UL schemes1.3 DL control overhead assumptions
2. Results: Peak spectrum efficiency 2.1 DL peak spectrum efficiency 2.2 UL peak spectrum efficiency
3. Results: Full-buffer spectrum efficiency3.1 Indoor (InH)3.2 Microcellular (UMi)3.3 Base coverage urban (UMa)3.4 High speed (RMa)
4 Results: VoIP4.1 FDD4.2 TDD
5. Results: Mobility5.1 FDD5.2 TDD
6. Simulator calibration7. Conclusion
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 36
Mobility Capacity, FDD
2.56
1.211.08
1.221.36 1.451.42
3.15
0
1
2
3
4
Indoor (InH)NLOS LOS
Microcelluar (UMi) NLOS LOS
Base Coverage Urban(UMa)
NLOS LOS
High speed (RMa)NLOS LOS
Spectr
al
eff
icie
ncy (
bps/H
z)
5.1 Mobility results (FDD)
Evaluated schemesRel. 8 UL (1x4)
LTE Rel. 8 fulfills ITU-R requirements for all the environments
1.00.75 0.55
0.25
ITU-R requirement
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 37
Mobility Capacity,TDD
2.63
1.140.95 1.03
1.36 1.38
3.11
1.48
0
1
2
3
4
Indoor (InH)NLOS LOS
Microcelluar (UMi) NLOS LOS
Base Coverage Urban(UMa)
NLOS LOS
High speed (RMa)NLOS LOS
Spectr
al
eff
icie
ncy (
bps/H
z)
5.2 Mobility results (TDD)
Evaluated schemesRel. 8 UL (1x4)
LTE Rel. 8 fulfills ITU-R requirements for all the environments
1.00.75 0.55
0.25
ITU-R requirement
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 38
Outline
1. Main assumptions (Recap)1.1 Evaluated DL schemes1.2 Evaluated UL schemes1.3 DL control overhead assumptions
2. Results: Peak spectrum efficiency 2.1 DL peak spectrum efficiency 2.2 UL peak spectrum efficiency
3. Results: Full-buffer spectrum efficiency3.1 Indoor (InH)3.2 Microcellular (UMi)3.3 Base coverage urban (UMa)3.4 High speed (RMa)
4 Results: VoIP4.1 FDD4.2 TDD
5. Results: Mobility5.1 FDD5.2 TDD
6. Simulator calibration7. Conclusion
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 39
6 Simulator calibration
How to reproduce 3GPP results?
Recommended simulator calibration procedures
Step 1: Implement ITU-R environments Check that pathloss and geometry distributions are in line
with 3GPP resultsStep2: Implement basic LTE models (1 x 2)
Check that spectral efficiency and user-throughput are in line with 3GPP results
Step3: Implement Rel-8 functionality (DL 4 x 2 SU-MIMO, UL 1 x 4 SIMO)
Check that Rel-8 performance is in line with 3GPP results This should enable reaching most ITU-R requirements
Step4: Implement advanced LTE functionalityCheck that remaining ITU requirements can be reached
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 40
6 Simulator calibration Step1 results: Coupling gain
Calibration
0
10
20
30
40
50
60
70
80
90
100
-140 -120 -100 -80 -60 -40Coupling gain (Prx-Ptx) [dB]
C.D
.F. [
%]
InH
UM i
UM a
RM a
Case 1 3D
Case 1 2D
Averaged over 17 sourcesRef: 3GPP TR36.814 ver 1.5.0
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 41
6 Simulator calibrationStep1 results: DL wideband SINR (Geometry)
Calibration
0
10
20
30
40
50
60
70
80
90
100
-10 0 10 20 30 40Downlink wideband SINR (geometry) [dB]
C.D
.F. [
%]
InH
UM i
UM a
RM a
Case 1 3D
Case 1 2D
Averaged over 17 sourcesRef: 3GPP TR36.814 ver 1.5.0
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 42
6 Simulator calibrationStep 1 results: DL per UE SINR after MRC combining
Downlink Calibration
0
10
20
30
40
50
60
70
80
90
100
-10 0 10 20 30 40 50DL Per UE Average SINR [dB]
C.D
.F. [
%]
InH
UMi
UMa
RMa
Case 1 3D
Case 1 2D
Averaged over 16 sources
1 x 2
Ref: 3GPP TR36.814 ver 1.5.0
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 43
6 Simulator calibrationStep 1 results: UL per UE SINR Uplink Calibration
0
10
20
30
40
50
60
70
80
90
100
-5 0 5 10 15 20UL Per UE Average SINR [dB]
C.D
.F. [
%]
InH
UMi
UMa
RMa
Case 1 3D
Case 1 2D
Averaged over 16 sourcesRef: 3GPP TR36.814 ver 1.5.0
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 44
6 Simulator calibrationStep 2 results: DL user throughput Downlink Calibration
0
10
20
30
40
50
60
70
80
90
100
0 0, 1 0,2 0,3 0,4 0,5Normalized User Throughput [bps/Hz]
C.D
.F. [
%]
InHUMi
UMa
RMaCase 1 3D
Case 1 2D
Averaged over 16 sources
1 x 2
Ref: 3GPP TR36.814 ver 1.5.0
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 45
6 Simulator calibration Step2 results: UL user throughput
Uplink Calibration
0
10
20
30
40
50
60
70
80
90
100
0,0 0,1 0,2 0,3 0,4 0,5Normalized User Throughput [bps/Hz]
C.D
.F. [
%]
InH
UMi
UMa
RMa
Case 1 3D
Case 1 2D
Averaged over 16 sources
1 x 2
Ref: 3GPP TR36.814 ver 1.5.0
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 46
6 Simulator calibration Step 2 results: DL Spectrum efficiency 1-by-2
Spectrum efficiency calibration, DL
2.3
1.2 1.2
1.5
1.1
1
0.0270.035
0.026
0.082
0.028 0.022
0
1
2
3
InH UMi UMa RMa Case 1, 3D Case 1, 2D
Cell
avera
ge (
bps/H
z/cell)
0
0.1
0.2
0.3
Cell
Edge (
bps/H
z)
Averaged over 16 sources
Ref: 3GPP TR36.814 ver 1.5.0
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 47
6 Simulator calibration Step 2 results: UL spectrum efficiency 1-by-2
Spectrum efficiency calibration, UL
1.77
0.910.86
0.99
0.74
0.68
0.034 0.036 0.031
0.084
0.033 0.026
0
1
2
InH UMi UMa RMa Case 1, 3D Case 1, 2D
Cell
avera
ge (
bps/H
z/cell)
0
0.1
0.2
Cell
Edge (
bps/H
z)
Averaged over 16 sources
Ref: 3GPP TR36.814 ver 1.5.0
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 48
6 Simulator calibration Step 3 and 4 results
Results shown in Slide 13 - 31
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 49
6 Simulator calibration: parameters (1)
MMSE in frequency domain, MRC over antennas
(no intercell interference rejection)
Uplink receiver type
Maximum four transmissionsProponent to specify IR or CC
Uplink HARQ
Based on delayed measurements. Ideal channel estimate from UL transmission in subframe n can be used for rate adaptation in
subframe n+7MCSs based on LTE transport formats [TR36.213]
Uplink Link adaptationP0 = -106dBm, alpha = 1.0Uplink Power control
Frequency Domain Multiplexing – non-channel dependent, share available bandwidth between users connected to the cell, all users get
resources in every uplink subframe. With M users and Nrb PRBs available, Mh=mod(Nrb,M) users get
floor(Nrb/M)+1 PRBs whereas Ml=M-Mh users get floor(Nrb/M) PRBs
Uplink scheduler1x2 SIMOUplink transmission scheme
MRC Downlink receiver typeMaximum four transmissionsDownlink HARQ
Wideband CQI, no PMI on PUCCH (mode 1-0)5ms periodicity,
6ms delay total (measurement in subframe n is used in subframe n+6)CQI measurement error: None
MCSs based on LTE transport formats [TR36.213]
Downlink link adaptationRound robin with full bandwidth allocationDownlink scheduler
1x2 SIMODownlink transmission scheme FDDDuplex method
ValueParameter
Ref: 3GPP TR36.814 ver 1.5.0
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 50
6 Simulator calibration: parameters (2)
ExplicitIntercell interference modeling
According to ITU for ITU scenariosSCM urban macro high spread for 3GPP case 1
Channel model
0dB, except for the ITU scenarios in step 1a where a feeder loss of 2dB is used.
Feeder loss
ITU Indoor, indoor hotspot scenario (InH): N/AITU Microcellular, urban micro-cell scenario (Umi): 12deg
ITU Base coverage urban, Urban macro-cell scenario (Uma): 12degITU High speed, Rural macro-cell scenario (Rma): 6 deg
Case 1 3GPP 3D: 15 degCase 1 3GPP 2D: N/A
BS antenna downtilt
LTE: L=3 symbols for DL CCHs, M=4 resource blocks for UL CCH, overhead for demodulation reference signals,
Control Channel overhead, Acknowledgements etc.
Ideal, both demodulation and soundingChannel estimation
Vertically polarized antennas0.5 wavelength separation at UE,
10 wavelength separation at basestation
Antenna configurationValueParameter
Ref: 3GPP TR36.814 ver 1.5.0
© 3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009© 3GPP 2009 <3GPP LTE-Advanced Evaluation Workshop, Dec. 17-18, 2009> 51
7. Conclusion
The 3GPP self-evaluation has shown that the LTE Release 10 & beyond (LTE-Advanced) SRIT and the individual FDD RIT and TDD RIT components completely satisfy the criteria of Step 7 and should move forward to Step 8 of the process. In particular, the SRIT and the individual FDD RIT and TDD RIT components meet all the requirements in all four of the four defined test environments.The evaluation results were based on the rigorous calibration effort.