1. Understanding WiMAX
Performance
BP Tiwari
beyond4g.org
1

2. Presentation Outline
 WiMAX Technology Performance
– Rel 1.0/Rel 1.5/ Rel 2.0
 WiMAX and 3G
– HSPA vs WiMAX
 WiMAX and LTE
– LTE Rel 8 vs WiMAX 1.0
– 16m vs LTE Rel8
– 16m vs IMT-A
Beyond 4G
2 WIMAX Network Architecture

3. WiMAX Technology Advancements
Parameter Release-1 Release-1 Enhanced Release 2
Duplex TDD TDD FDD TDD FDD
Channel BW 5/10 MHz 5/10 MHz & 2x10 MHz & • 5/10/20 MHz( 40 • 10 MHz/20 MHz(
20 MHz( 2x20 MHz MHz optional) 40 MHz optional)
Optional) (Optional) • Carrier • Carrier
Aggregation up Aggregation up to
to 100 MHz 100 MHz
Downlink (2x2) SU-MIMO (2x2,4X2) SU-MIMO DL : (4x4), (8x8) SU-MIMO,MU-MIMO
Uplink (1x2) SIMO (1x2) SIMO UL: (1x4), (2x4), (4x4) (SIMO,MU-
MIMO,SU-MIMO)
Permutation PUSC AMC RU
DL Modulation 64QAM 64QAM 64QAM
DL FEC Coding 5/6 5/6 5/6
UL Modulation 16QAM 64QAM 64QAM
UL FEC Coding 3/4 5/6 5/6
Beyond 4G
3 WIMAX Network Architecture

4. WiMAX Technology Performance
Parameter Release-1 Release Enhanced Release 2
Peak spectral efficiency 6.2(2X2) 6.5(2X2) DL: 8.0/15.0 (2x2/4x4)
(b /s/ Hz/ sector) (Mixed 1.3(1X2) 1.3(1X2) UL: 2.8/6.75 (1x2/2x4)
Mobility)
Average spectral 1.3 (2x2) 1.6 (2x2) DL (2x2) = 2.6
efficiency 0.7(1X2) 0.9(1X2) 2 Times UL (1x2) = 1.3
(b /s/ Hz/ sector)
Cell Edge Spectral DL (2x2) = 0.09 DL (2x2) = 0.09 DL (2x2) = 0.09
(b /s/ Hz/ sector) UL (1x2) = 0.05 UL (1x2) = 0.05 UL (1x2) = 0.05
Latency C-plane: 100 ms (idle C-plane: 100 ms (idle to C-plane: 100 ms (idle to active)
to active) active) U-plane: 10 ms
U-plane: 40-50 ms U-plane: 40-50 ms
Mobility Support up to 120 Kmph Support up to 350 Kmph Support up to 350 Kmph
Handover Interruption time < 60 ms <60ms Intra frequency: 27.5
Inter frequency: 40 (in a band)
60 (between bands)
Voip Capacity 12,5 (MHz) TDD 31.6 FDD 60 (DL 2x2 and UL 1x2)
Beyond 4G
4 WIMAX Network Architecture

5. Peak vs Average Spectral Efficiency
16 15
14
12
10
8
8 6.4 6.75
6
6
4 2.8 2.8
1.3
2
0
1 2 3 4
Peak DL Peak UL
2008 2010-11 2013-2014
3
2.4 2.5
2.5 2.3
2
1.6
1.5 1.3 1.3
0.9
1 0.7
0.5
0
1 2 3 4
Average DL Average UL
2008 2010-11 2013-2014
Beyond 4G
5 WIMAX Network Architecture

6. Understanding Evolution
Parameter Release 1.0 Release 1.5 Release 2.0
DL (2X2), DL (2X2), DL (2X2), DL (4X2), DL (4X4),
UL(1X2) UL(1X2) UL(1X2) UL(2X4) UL(2X4)
Peak DL
bit/s/Hz/sector 6 6.4 8 15 30
Peak UL
bit/s/Hz/sector 1.3 2.8 2.8 6.75 15
Average DL
bit/s/Hz/sector 1.3 1.6 2.3 2.4 3.1
Average UL
bit/s/Hz/sector 0.7 0.9 1.3 2 2.5
Data Rate 10 MHz 8.06 9.92 14.26 14.88 19.22
Date Rate 10 MHz 2.66 3.42 4.94 7.6 9.5
2008 2010 2012 2013 2014
Beyond 4G
6 WIMAX Network Architecture

7. The Big Evolution Picture
500
642% growth
400
300
200
Number of subs per sector supporting the Data Rate per User
100
140
0
120
2010 2011 2012 2013 2014 2015 100
80
Data Rate Grow th Number of subs per sector supporting the Data Rate per User 60
40
20
0
2010 2011 2012 2013 2014 2015
Taking Technology evolution DL - 10 MHz in Mbps Number of subs per sector supporting the Data Rate per User
25
20
15
10 1. Need Bigger Chunks of
5
0
Spectrum
2010 2011 2012 2013 2014 2015
Taking Technology evolution DL - 10 MHz in Mbps
2. 20 Mhz to 40 MHz support
3. Multi carrier Aggregation
Beyond 4G
7 WIMAX Network Architecture

8. Lets understand Capacity
WiMAX and HSPA
HSPA ( Rel6) HSPA+(Rel7,QAM64) WIMAX (Rel 1.0)
Sector Throughput Sector Throughput Sector Throughput
DL 3.2 DL 3.52 DL 8.06 ( 1X3X1)
20 %
23% 12 %
8%
23% 4%
WCDMA CELL BREATHING
> 1.2 Mbps > 7 Mbps > 20 Mbps 20+ Mbps Beyond 4G
Source : NGMN simulaitons presented by Motorola, Paul Sten at LTE ASIA 09
WIMAX Rel 1.0 number is presented by simulation done by SAMSUNG
8 WIMAX Network Architecture

9. The Whole Picture
LTE 8
Downlink 4X2 WIMAX
HSPA+
HSPA
8.35 8.04 EV-DO Rev A
Downlink 2X2
3.5
Downlink 1X1 .5 3.2
1.25 MHz 5
Uplink .5 1.56
No 64 QAM
1.56
2.66
3.8
WIMAX is TDD
10MHz
Beyond 4G
9 WIMAX Network Architecture

10. 16m and IMT-A
Ant. Config. Rel. 1.0/1.5 Rel 2.0 IMT-
Advanced*3
Capacity DL 2-by-2 1.3-1.5 2.3 –
[bps/Hz/cell] x1.4-1.6
4-by-2 1.87 2.6 2.2
4-by-4 NA 3.1 –
UL 1-by-2 0.7-.9 1.3 –
2-by-4 – 2.1 1.4
Note : Bases on IEEE evaluation report submitted to ITU
Beyond 4G
10 WIMAX Network Architecture

11. Thanks
 Feel free to email any clarification or
additional input at admin@beyond4g.org
Beyond 4G
11 WIMAX Network Architecture

12. Thanks
Beyond 4G
12 WIMAX Network Architecture