airspeed presentation
TRANSCRIPT
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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