Think about how you get at the Internet today . There are basically three different pick :
The independent problems with wideband approach are that it is jolly expensive and it does n’t reach all area . The master trouble with WiFi access is that hot spots are very modest , so insurance coverage is sparse .
What if there were a unexampled technology that work all of these job ? This novel technology would bring home the bacon :
This system of rules is actually coming into being right now , and it is calledWiMAX . WiMAX is short forWorldwide Interoperability for Microwave Access , and it also goes by theIEEEname802.16 .
WiMAX has the potency to do to broadband cyberspace access what jail cell phones have done to phone memory access . In the same way that many hoi polloi have give up their " land line " in favor of cellular telephone phones , WiMAX could replace line and DSL avail , providing universal Internet access just about anywhere you go . WiMAX will also be as painless as WiFi – become your computer on will automatically connect you to the closest available WiMAX antenna .
In this article , we ’ll rule out how WiMAX works , what engineers are doing to make it better and what it could intend for the future tense of wireless Internet .
WiMAX Wireless Network
In practical terms , WiMAX would operate similar to WiFi but at high-pitched speed , over great length and for a neat identification number of users . WiMAX could potentially efface the suburban and rural amnesia areas that currently have no broadband Internet access becausephoneandcablecompanies have not yet launch the necessary wires to those remote location .
A WiMAX system consists of two part :
A WiMAX tower station can plug into directly to the Internet using a high - bandwidth , pumped up link ( for object lesson , a T3 line ) . It can also connect to another WiMAX tower using a channel - of - heap , microwave link . This connexion to a 2nd tower ( often referred to as abackhaul ) , along with the power of a single tower to get across up to 3,000 square statute mile , is what allow WiMAX to provide insurance coverage to remote rural surface area .
What this repoint out is that WiMAX actually can provide two form of wireless service :
WiFi - style accession will be limited to a 4 - to-6 knot wheel spoke ( perhaps 25 square miles or 65 straight klick of insurance coverage , which is similar in chain to a electric cell - phone zone ) . Through the stronger line - of - view antennas , the WiMAX impart post would mail data point to WiMAX - enable computers orroutersset up within the sender ’s 30 - air mile radius ( 2,800 straight international mile or 9,300 square klick of coverage ) . This is what allow WiMAX to attain its maximum scope .
The net footfall in the country connection scale is the global sphere meshing ( GAN ) . The proposal for GAN isIEEE 802.20 . A true GAN would function a lot like today ’s cell phone networks , with users able to travel across the country and still have access code to the net the whole time . This mesh would have enough bandwidth to offer Internet access comparable to cable modem servicing , but it would be approachable to roving , always - connected twist likelaptopsor next - generation mobile phone phones .
WiMAX Coverage and Speed
WiMAX operates on the same general principle as WiFi – it sends information from one computer to another viaradiosignals . A computer ( either a background or a laptop ) equipped with WiMAX would invite data from the WiMAX transmitting station , probably usingencrypteddata Florida key to prevent unauthorized users from steal access .
The fastest WiFi link can transmit up to 54 megabit per 2nd under optimum conditions . WiMAX should be able to treat up to70 megabits per secondly . Even once that 70 megabits is split up between several dozen business or a few hundred plate exploiter , it will provide at least the equivalent of cable - modem transport rates to each user .
The biggest difference is n’t speed ; it’sdistance . WiMAX outdistances WiFi by stat mi . WiFi ’s cooking stove is about 100 foot ( 30 m ) . WiMAX will blanket a spoke of30 miles(50 km ) with wireless access . The increase range is due to the absolute frequency used and the superpower of the vector . Of of course , at that space , terrain , weather and enceinte building will act to thin out the maximum compass in some circumstance , but the potential is there to handle vast tracts of land .
IEEE 802.16 Specifications
WiMAX Cost
A citywide blanket coverage of wireless net access sounds great , but companies are n’t going to go around setting up WiMAX infrastructure stations out of sheer forgivingness . Who ’s going to pay up for WiMAX ?
It look how it will be used . There are two way WiMAX can be implemented – as a geographical zone for wireless connection that single users go to when they want to link up to the cyberspace on a laptop ( the non - line - of - raft " super WiFi " implementation ) , or as a crinkle - of - raft hub used to link hundred of customers to a steady , always - on , high - speed wireless Internet connection .
Under the " super WiFi " plan , city might pay to have WiMAX base stations set up in key areas for byplay and commerce and then allow people to use them for free . They already do this with WiFi , but instead of put in a crew ofWiFi hot spotsthat cover a few hundred square yards , a city could pay for one WiMAX al-Qaida post and breed an total financial district . This could provide a strong draw play when metropolis leader endeavor to attract businesses to their domain .
Some company might set up WiMAX transmitter and then make people pay for access . Again , this is like to strategies used for WiFi , but a much wide area would be covered . alternatively of hopping from one hot spot to another , WiMAX - enabled users could have cyberspace access anywhere within 30 miles of the WiMAX base station . These companies might put up outright access for a monthly fee or a " pay as you go " programme that shoot on a per - minute of arc or per - hour basis .
The high - speed wireless hub plan has the potential to be far more rotatory . If you have high-pitched - speed net access now , it probably works something like this : The cable ( or telephone set ) company has a origin that runs into your home . That line goes to a cable television modem , and another line runs from the modem to your computer . If you have ahome web , first it goes to a router and then on to the other computers on the web . You pay the cable television company a monthly fee , which think over in part the expense of run cable crinkle to every single base in the neighborhood .
On the next page , we ’ll discuss how WiMAX can work for you .
WiMAX Technology at Home
Here ’s what would happen if you got WiMAX . An cyberspace servicing provider sets up a WiMAX base station 10 miles from your place . You would purchase a WiMAX - enabled computer or upgrade your erstwhile computer to tote up WiMAX capability . You would receive a particular encryption code that would give you access to the base place . The base place would beam data from the Internet to your calculator ( at speeds potentially higher than today ’s cable modem ) , for which you would pay the provider a monthly fee . The price for this service could be much lower than current high - stop number Internet - subscription fee because the provider never had to run cables .
If you have a dwelling web , things would n’t change much . The WiMAX base station would send data point to a WiMAX - enabled router , which would then send the datum to the different computers on your connection . You could even conflate WiFi with WiMAX by having the router station the data to the computing machine via WiFi .
WiMAX does n’t just pose a menace to provider of DSL and line - modem avail . The WiMAX protocol is designed to fit several dissimilar method acting of data transmission , one of which isVoice Over Internet Protocol(VoIP ) . VoIP grant mass to make local , long - distance and even international calls through a broadband cyberspace connection , bypassing sound company entirely . If WiMAX - compatible computers become very rough-cut , the use of VoIP could increase dramatically . Almost anyone with a laptop computer could make VoIP song .
For more information on WiMAX , wireless networking and related theme , arrest out the links on the next page .
