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Accessing Wireless Broadband Underground Accessing Wireless Broadband Underground Most mobile devices, including mobile phones, smart phones and laptops, have wireless broadband capability, allowing their users to access the internet from virtually anywhere – in theory. In actuality, however, there is a gap between the capabilities of the devices and the functionality of wireless networks. One of the most prominent illustrations of this predicament is the inaccessibility of mobile broadband when travelling underground on subways. In 2006, over 30 million people around the world bought smart phones, a number that continues to rise each year, but what use is a smart phone if it cannot reach its full potential? Subways and busses are the top locations for mobile device usage, so it is becoming a central concern that cities begin to meet their needs. A solution seems to have presented itself. WiMax (Worldwide Interoperability for Microwave Access), a new telecommunications technology which provides users with the ability to transmit data wirelessly, is currently being tested in locations with high underground travel rates, such as Seoul, Baltimore and Atlanta. While American cities have yet to realize WiMax’s usefulness, Korea has taken full advantage of this new technology. Seoul, South Korea, has one of the most efficient WiMax networks in the world, with almost every corner of the city having been equipped with mobile WiMax coverage. Anyone with a smart phone or a laptop can access the internet from anywhere in the city, including from underground locations. Throughout their subway system WiBro (wireless broadband) transmitters are installed at 400-metre intervals, allowing commuters to surf the web from their mobile devices at broadband speeds upwards of 4mbps.
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Rochtain a Underground Leathanbhanda Gan Sreang Rochtain a Underground Leathanbhanda Gan Sreang Tá an chuid is mó gléasanna soghluaiste, lena n-áirítear fón póca, fón cliste agus ríomhairí glúine, cumas leathanbhanda gan sreang, rud a ligeann a n-úsáideoirí rochtain a fháil ar an idirlíon ó áit ar bith beagnach - go teoiriciúil. I actuality, áfach, tá bearna idir na cumais ar na feistí agus feidhmiúlacht na líonraí gan sreang. Is é ceann de na léaráidí is suntasaí de seo predicament an inaccessibility leathanbhanda soghluaiste agus iad ag taisteal faoi thalamh ar subways. I 2006, cheannaigh níos mó ná 30 milliún duine ar fud an domhain fón cliste, roinnt go leanann a ardú gach bliain, ach cad é a úsáid le fón cliste más rud é nach féidir é a bhaint amach ar a gcumas iomlán? Tá subways agus busses na suíomhanna is fearr le haghaidh úsáide gléas soghluaiste, agus mar sin tá sé ag éirí ina ábhar imní lárnach go tús cathracha chun freastal ar a gcuid riachtanas. Cosúil le réiteach a bheith i láthair féin. WiMax (Comh-inoibritheacht ar fud an domhain maidir le Rochtain MICREATHONNACH), teicneolaíocht teileachumarsáide nua a n-úsáideoirí ar fáil leis an gcumas chun sonraí a tharchur gan sreang, atá á thástáil faoi láthair in áiteanna le rátaí taistil ard faoi thalamh, mar shampla Seoul, Dún na Séad agus Atlanta. Cé go bhfuil cathracha Mheiriceá fós a bhaint amach ar úsáideacht WiMax ar sin, tá an Chóiré glacadh buntáiste iomlán an teicneolaíocht nua seo. Seoul, An Chóiré Theas, tá ceann de na líonraí is éifeachtaí WiMax ar fud an domhain, le beagnach gach cúinne na cathrach a bheith feistithe le clúdach WiMax soghluaiste. Is féidir le duine ar bith le fón cliste nó ríomhaire glúine rochtain a fháil ar an idirlíon ó áit ar bith sa chathair, lena n-áirítear ó láithreacha ar thalamh. Le linn a gcuid córas subway WiBro (leathanbhanda gan sreang) tharchuradóirí atá suiteáilte ar 400 méadar eatraimh, rud a ligeann do chomaitéirí surf an ngréasán as a n-gléasanna soghluaiste ar luasanna leathanbhanda suas le 4mbps.