cellular communications wimax. what is wimax? fixed wimax

CELLULAR COMMUNICATIONS

WiMax

What is WiMax?

Fixed WiMax

Mobile WiMax

WiMax is Not WiFi

WiMax Indoor CPE

P2P and PMP

LOS and NLOS

Antennas and Radios

Adaptive Antenna Systems

QoS

QoS

Fixed Wireless Applications

Alternatives

Low Barrier To Entry

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Wireless Standards 4 main usage segments are specified

Range, Power, …

NDSLab Copyright@2008

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WiMAX on the Path of Fixed/Mobile Convergence

Fixed

Mobile

Will Convergence

Wi-Fi WCDMA 802.16 (WiMAX)

Spectrum 2.4G, 5.8GHz (Unlicensed)

Around 2GHz (Licensed)

2~11, 10~66 GHz(Licensed, Unlicensed)

Channel Access Contention-based Scheduled Scheduled

Bit Rate Up to 54Mbps Up to 2Mbps Up to 75 Mbps

Mobility Fixed, Portable Mobile Fixed, Portable, Mobile

Modulation Scheme CDMA, OFDM CDMA OFDM, OFDMA

Typical Communication

Range100s meters 10s kilo-meters 10s kilo-meters

Comparison

Speed Price Ubiquity Convenience Localization

Key Value Offerings

Rel

ativ

e Le

vel

3GWLANWiMAXwired

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Deployment of WiMAX Service

Source: WiMAX Forum/Siemens

Backhaul Feeding Point-to-point link for fixed

infrastructure Fixed Wireless Access

Wireless local loop for hot-spot feeding

Nomadic Access CPEs in hot-zone access

the service directly Portable/Mobile Access

Handover function enabling mobile data feeding

Mobile Performance Today

802.16m leads in performance. 802.16e leads in performance and availability

Technology Required

Spectrum

Standards

Completion

(Expected)

Peak Throughput

(Mbps)

Avg. Spectral Efficiency

(bits/sec/Hz/Sector)

Sleep to Active

Latency

DL UL DL UL

802.16e/Mobile WiMAX Release 1.0 2x2 MIMO TDD

10 MHz(5:3)

Dec. 2005 40 17 1.4 0.7 < 40 ms

HSPA (Release 6) FDD

2x5 MHz Mar. 2005 14 6 0.5 0.3 250 ms

HSPA+ (Release 8)2x2 MIMO FDD

2x5 MHz Dec. 2008 42 12 0.8 0.5 50 ms

LTE (Release 8) 2x2 MIMO FDD

2x10 MHz

Mar. 2009 86 38 1.6 0.8 10 ms

LTE (Release 10)4x4 MIMO FDD

2x10 MHz

(Q1 2011) 160 80 2.4 2.1 <10ms

802.16m4x4 MIMO TDD

20 MHz(5:3)

(Q3, 2010) 170 90 2.9 2.5 <10 ms