Wimax Technology
April 29th, 2010
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WiMAX, an acronym for Worldwide Interoperability for Microwave Access is telecommunication technology tat provide fully fixed and mobile access ( data transfer ) although they can transfer A voice information. in fact they use a IP protocol to transfer A information. The current wimax provides up to 40 Mbps throughput to End User.
WiMax Use A IEE 802.16 standard (also called broadband wireless access) by using wimax, user can browsing trough internet much faster than older technology.
Wimax Spectrum were divided in Fixed Broadband Wireless Spectrum,5GHz U-NII & WRC Bands,MMDS
Fixed Broadband Wireless Spectrum
The fixed broadband wireless spectrum using the 3.5GHz band is the most widely available band allocated for broadband wireless access worldwide exept, for the United States, they use wimax frequency at 3650MHz. Covering 300 Mhz of bandwidth, this band allow serve more fixed wireless aplication on last mile.
5GHz U-NII & WRC Bands
The Unlicensed National Information Infrastructure (U-NII) bands have three major frequency bands: low and mild U-NII bands (5150 – 5350) (802.11a), WRC (new) (5470 – 5725), and upper U-NII / ISM band (5725 – 5850). The newly allocated World Radio Conference (WRC) 5470 to 5725MHz band adds significant license-exempt bandwidth. Most metropolitan deployments are in the upper U-NII 5725 to 5850 band because there is less interference there, i.e. Wi-Fi and the outdoor power allowance are in the higher 2 to 4W range as compared to only 1W in the lower and middle U-NII bands.
MMDS
MMDS or The Multichannel Multipoint Distribution Service using 31 channel of 6 Mhz betwen 2500 to 2690MHz range
other spectrum as
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License-exempt sharing of television broadcast spectrum
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700 MHz
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902-928 MHz (US and Canada)
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2.40 – 2.4835 GHz
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5.250 – 5.350 GHz (mid-UNII band)
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5.470 – 5.725 GHz (proposed additional 255 MHz in US)
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24 GHz
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60 GHz
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70-80-90 GHz
Are not using for wimax service because they already used for another application.
On indonesia coverage, WIMAX using a 2,3 GHz
According to a report in Antara News, the Indonesian government plans to put 2.3 GHz WiMAX spectrum to tender bid in Q4 2008.
the Company were win in tender Bid are PT Telkom, PT Indosat Mega Media, PT Internux, PT First Media, PT Jasnita Telekomindo, PT Berca Hardayaperkasa, PT Rahajasa Media Internet an Konsorsium Wimax Indonesia, and Konsorsium PT Comtronics Systems dan PT Adiwarta Perdania.
although they use 2.3 GHz frequency spectrum, they will spread their service in diferent area.
taken from:
wikipedia.com/wimax
wimax.com
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