AirSpeed Presentation

7/29/2019 AirSpeed Presentation

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WiMAX Reality

Peter HendrickAirSpeed Telecom

IBEC 27th January 2010


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So, what have you heard about WiMAX?

Can deliver connectivity @ distances >30km

Can deliver broadbands speeds >40Mbps

Can deliver voice services

Can deliver Video services

Offers mobility

What is the reality?


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Pre-WiMAX Alternatives

Proprietary Point to Multipoint Solutions:

Alvarion OFDM @ 3.5GHz Navini SCDMA @ 2.4/3.5GHz Flarion Flash-OFDM @ 0.45 / 1.9 / 2.1GHz

Target Marget:

DSL white spots / Alternative ISP's / Mobile Data (High speed trains)

Positives:

Good alternative to lower speed ADSL (Navini) Good alternative to higher speed ADSL and symetrical DSL (Alvarion) Real high speed mobile data (Flarion) Good Non Line of Sight performance

Negatives:

Proprietary One vendor for both Base Stations and CPE Expensive Base Stations 50-80k USD / CPE ~ $500 No long term evolution fork lift of BTS and CPE


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What is WiMAX?

WiMAX is: Acronym for Worldwide Interoperability for Microwave Access. Based on Wireless MAN technology. A wireless technology optimized for the delivery ofIP centricservices over a wide area.

A scaleable wireless platform for constructing alternative andcomplementary broadband networks. A certification that denotes interoperability of equipment built tothe IEEE 802.16 or compatible standard. The IEEE 802.16Working Group develops standards that address two types of

usage models:A fixed usage model (IEEE 802.16-2004).A portable usage model (IEEE 802.16e).


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What does WiMAX offer for the operator?

Equipment Standardisation: Equivalent to GSM / W-CDMA

Shared proprietary IPR: i.e. Antenna Beamforming

Improved performance: Throughput, latency, NLOS, Mobility (Handover)

Major chip manufactorers: Intel, Beceem, Sequens, Samsung, GCT for CPE

New vendors: Cisco, Alcatel-Lucent, Motorola

Infrastructure savings: Lower Base Station cost due to competitive market

Subscriber acquisition savings: Volume Market for CPE / Zero CPE cost (Laptops)

Network Evolution Path: 802.16m and beyond


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What does WiMAX offer the Residential / Business User?

Extended coverage (rural and urban)

Resilience to copper / fibre

Premium SLA capability

- Reliability that previous proprietary systems did not deliver

Symmetrical service

No Line rental VoIP and Data

Lower bundled cost?


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Technical - things to know!

WiMAX 802.16e is TDD based system i.e. Same TX/RX channel

802.16e Rel 1.0 supports 10MHz channel allocation (now)- delivering approximately 32Mbps aggregate per sector

802.16e Rel 1.5 - 2x20MHz channel, TDD / FDD, 289Mbps

- Availability 2010

802.16m (Rel 2.0) 2011/12, TDD/FDD, upto 100MHz channel,Goal of speeds of 1Gbps (fixed) / 100Mbps (mobile)

802.16e has evolution path to 802.16m

802.16m potentially TDD LTE Advanced, 20-100MHz allocation?


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Technical - things to know about Downlink!

Advanced radio features of WiMAX 802.16e:

Antenna Cyclic Delay Diversity improved system gain & coverage.

Simple time delay to each stream,every transmission element containsa cyclic shifted version of the OFDM

data transmission.


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MIMO A improved system gain and coverage

Transmits a single data stream from multipleAntennas that is encoded with a STBC(SpaceTime Block Code).


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MIMO B improved capacity per sector

Leverages SM (Spatial Multiplexing) by utilizingtwo or more multiple antenna elements at thebase station and MS (Mobile Station) forprocessing independent data streams.


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Beamforming

Beamforming creates a narrow antenna beamdirected to a particular subscriber while signalstrength is retained along the signal edge.

Two forms of Beamforming:

AOA (Angle of Arrival)Intelligent (mathematical-beamforming)


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Downlink System Performance for 802.16e


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Technical - things to know about Uplink!

Maximal-ratio Combining (MRC)Maximal-ratio Combining (MRC) is areceive diversity scheme.

Collaborative Spatial Multiplexing (CSM)Couple geographically-separated mobile stations(also known as pairing) in such a way that twotransmitters are spatially diverted, so that the basestation receiver can resolve the two incoming data streams.


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Leading WiMAX Vendors

Alcatel-Lucent Base Station 2.3 / 2.5 / 3.5GHz

Alvarion Base Station/CPE - 2.3 / 2.5 / 3.5GHz

Cisco Base Station/CPE - 2.3 / 2.5 / 3.5GHz

Huawei Base Station/CPE/Cards/ Handsets - 2.3 / 2.5G / 3.5GHz

Intel Chipsets (CPE, Cards, Laptops etc)

Motorola Base Station/CPE - 2.3 / 2.5 / 3.5GHz

ZTE Base Station 2.3 / 2.5 / 3.5GHz

ZyXEL Base Station/CPE - 2.3 / 2.5 / 3.5GHz


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Summary

WiMAX has a clear value in broadband delivery

Enhanced Coverage

Resilience / Diversity Cloud

Symmetrical / Asymmetrical

SLA flexibility

Education Airspeed Telecom recent deployment

Our own commitment

national deployments

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