WIRELESS TECHNOLOGY

WIRELESS TECHNOLOGY IS SOMEWHAT SIMILAR TO WIRED TECHNOLOGY.AS IN BOTH OF THE TCHNOLOGIES THERE IS AN HARDWARE USED TO SEND AND RECIEVE DATA.FOR BOTH WIRED AND WIRELESS TECHNOLOGY, RANGE OF TRANSMISSION IS AN ISSUE AND FIXED.FOR EXAMPLE U CANT MOVE UR LAP-TOP FOR MORE THAN 15 FEETS FROM WIRELESS WALL JACK,SIMILAR WITH THE CASE OF 15 FEET WIRE.
ONLY DIFFERENCE IN WIRELESS AND WIRED TECHNOLOGY IS THE METHOD OF CONNECTION AND THE RANGE PROVIDE BY THE PROVIDER. EG-HOME BASE PHONES CONNECTED WITH WIRES HAV LESS RANGE,DEPENDS ON THE LENGTH OF WIRE,WHERE AS OUR MOBILE PHONES WORKS ALL AROUND THE WORLD AS IT DIRECTLY OPERATES FROM THE SATTELITE.DIFFERENT TYPE OF WIRELESS SOLUTION CAN COMMUNICATE 10 FEET,10 MILES,OR WITH A SATTELITE IN A ORBIT SAME IN A CASE OF MOBILE PHONE WHICH WE DISCUSSED ABOVE.
IT MAY BE OF THREE TYPES-
1-PERSONAL AREA NETWORK (PAN)
2-LOCAL AREA NETWORK (LAN)
3-WIDE AREA NETWORK (WAN)
1-PERSONAL AREA NETWORK (PAN)-THIS NETWORKS WORKS BETWEEN TWO HARDWARE APPLICATIONS,AS ITS FILE TRANSFER RANGE IS VERY SHORT.ITS BANDWIDTH IS ALSO NOT SO IMPRESSIVE I-E ONLY UPTO 1 MB PER SECOND.FOR EXAMPLES-
a. TWO CHILDREN CONNECT TO PERSONAL NETWORK ON WI-FI AND PLAYING SAME GAME ON THEIR COMPUTER.
b. IRDA AND BLUETOOTH
BLUETOOTH IS ESSENTIALLY AN CABLE ELIMINATOR DEVICE, AS IT DOES NOT REQUIRE ANY SOUGHT OF CABLE FOR SHARING.ITS RANGE IS VERY SHORT,LIMITED TO ABOUT 10 METERS.ALWAYS REMEMBER BLUETOOTH IS NOT AN WIRELESS EXTENSION OF THE CORPORATE LOCAL AREA NETWORK.
2-LOCAL AREA NETWORK (LAN)-THIS NETWORK IS VERY FAMOUS NOW A DAYS,IN THIS MANY COMPUTERS ARE CONNECTED THROUGH A MAIN SERVER AND BROWSE NET,SHARING FILES,SHARING HARDWARES ETC.THIS NETWORKS WORKS IN A PERTICULAR RANGE DEPENDS UPON THE SERVER.AN EXTENSION OF AN EXISTING CORPORATE WIRED LAN.ITS BANDWIDTH IS VERY GOOD ,I-E- 5 MB PER SECOND.FOR EXAMPLE- 802.11
HERE 802.11 IS AN KEY TECHNOLOGY HERE.IT ESSENTIALLY PROVIDES A WIRELESS EXTENSION OF YOUR EXISTIN CORPORATE LAN.IT GENERALLY COMES WITH THE THREE VERSIONS-
a) 802.11b –THIS VERSION OF 802.11 IS CURRENTLY WIDELY DEPLOYED.
b) 802.11a –THIS VERSION OF 802.11 PROVIDES HIGHER BANDWIDTH.
c) 802.11g –IT OFFERS HIGHER BANDWIDTH AND ALSO IT IS BACKWARD COMPATIBLE WITH 802.11b.

3-WAN-IN THIS NETWORKS MANY COMPUTERS ARE CONNECTED FROM EACH OTHER THROUGH A SINGLE SERVER AND DO SHARING,BROWSING ETC.THIS WORKS SIMILARLY ON THE BASIS OF LAN BUT THE ONLY DIFFERENCE IS ITS RANGE AND ITS BANDWIDTH WHICH IS VERY LOW AS COMPARED TO LAN OR PAN. ITS BANDWIDTH IS GENERALLY OF RANGE 14.4 KBS PER SECOND, NOT MORE THAN THAT.IT GENERALLY USES A DIAL UP CONNETION TO CONNECT THROUGH SERVER.IT PROVIDE ESSENTIALLY A WORLD WIDE ACCESS.IT USES GENERALLY A DIGITAL CELLULAR NETWORKS.FOR EXAMPLES-CELLULARS AND CDPD
WIRELESS TECHNOLOGY’S IMPACTS
THROUGHOUT THE WORLD,WIRELESS TECHNOLOGIES ARE BEING ADOPTED AT DIFFERENT RATES.DEVELOPED NATIONS QUICKLY ADOPTED MOBILE TECHNOLOGY AND SUBCULTURE OF USERS HAVE DEVELOPED.IN DEVELOPING NATIONS MUCH HAS BEEN PROMISED OF WIRELESS TECHNOLOGIES TO CHANGE PEOPLE’S PERSONAL,ECONOMIC AND POLITICAL SITUATIONS AS SOON AS POSSIBLE.MANY REPORTS SUGGEST THAT WIRELESS TECHNOLOGIES ARE TAKING HOLD IN DEVELOPED AND DEVELOPING COUNTRIES ALIKE,SPREDING EVEN FASTER THAN RADIO,T.V,AND TELEPHONES AND REVOLUTIONIZE THE TELECOMMUNICATIONS.IN ONE SURVEY THIS FACT IS PROVED THAT THERE ARE 1.5 BILLION USERS WHO USE CELL PHONES ALONG WITH 250 MILLION MOBILE INTERNET USERS.THUS WE NEED TO CONSIDER WIDESPREAD ADOPTION OF WIRELESS TECHNOLOGIES.