DL - 4G Americas

Cell‐average and ‐edge spectrum efficiency
Microcellular environment (Uplink)
• LTE Rel. 8 with SIMO 1x4 fulfills ITU-R requirements
• Further 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)
Scheme and antenna configuration
Rel. 8 SIMO 1 x 4 (C)
Rel. 8 MU‐MIMO 1 x 4 (A)
MU‐MIMO 2 x 4 (A)
Scheme and antenna configuration
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)
Uplink spectral efficiency (FDD), UMi
ITU‐R
Requirement
(Ave./Edge)
1.8 / 0.05
1.8 / 0.05
1.8 / 0.05
Number of
samples
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February 2009
© 3GPP 2009 55
www.4gamericas.org February 2011 Page 162
12
Uplink spectral efficiency (TDD), UMi
ITU‐R
Requirement
(Ave./Edge)
1.8 / 0.05
1.8 / 0.05
1.8 / 0.05
1.8 / 0.05
2
1
Number of
samples
9
2
1
1
Cell average
[b/s/Hz/cell]
1.9
2.5
2.5
Cell average
[b/s/Hz/cell]
Cell‐average and Cell‐edge spectrum efficiency
Base coverage urban environment (Downlink)
1.9
2.3
2.8
3.0
Cell edge
[b/s/Hz]
0.073
0.077
0.086
Cell edge
[b/s/Hz]
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February 2009
© 3GPP 2009 56
0.070
0.071
0.068
0.079
• Extension of LTE Rel. 8 with MU-MIMO 4x2 (even with maximum DL control overhead
(L = 3)) fulfills ITU-R requirements
• Further improved performance can be achieved by using additional technology features
(e.g., CS/CB-CoMP 4x2, JP-CoMP 4x2, and CS/CB-CoMP 8x2)
Downlink spectral efficiency (FDD), UMa
Scheme and antenna
configuration
MU‐MIMO 4 x 2 (C)
CS/CB‐CoMP 4 x 2 (C)
JP‐CoMP 4 x 2 (A)
CS/CB‐CoMP 8 x 2 (C)
Scheme and antenna
configuration
MU‐MIMO 4 x 2 (C)
CS/CB‐CoMP 4 x 2 (C)
JP‐CoMP 4 x 2 (C)
CS/CB‐CoMP 8 x 2 (C/E)
ITU‐R
Requirement
(Ave./Edge)
Number
of
samples
L=1
Cell average
[b/s/Hz/cell]
L=2
L=3
2.2 / 0.06 7 2.8 2.6 2.4
2.2 / 0.06 6 2.9 2.6 2.4
2.2 / 0.06 1 3.0 2.7 2.5
2.2 / 0.06 3 3.8 3.5 3.2
Downlink spectral efficiency (TDD), UMa
ITU‐R
Requirement
(Ave./Edge)
Number of
samples
Cell average
[b/s/Hz/cell]
L=1 L=2 L=3
2.2 / 0.06
2.2 / 0.06
2.2 / 0.06
2.2 / 0.06
7
4
1
3
2.9
2.9
3.6
3.7
2.6
2.6
3.3
3.3
2.4
2.4
3.1
3.1
L=1
0.079
0.081
0.080
0.10
L=1
0.079
0.083
0.090
0.10
Cell edge [b/s/Hz]
L=2
0.073
0.074
0.073
0.093
Cell edge [b/s/Hz]
L=2
0.071
0.075
0.082
0.093
L=3
0.066
0.067
0.066
0.084
L=3
0.067
0.070
0.076
0.087