Wi-Fi: A brief history
In modern era Wi-Fi is a prime channel for communication, it is a networking technology. These days major volume of data is being transferred through Wi-Fi. Today Wi-Fi is one of the core needs of our lives. It’s everywhere at home, gathering spots, academic institutions, parks, etc. The significant role being played by this technology in our lives needs a brief description of Wi-Fi.
IEEE developed standard 802.11 for the implementation of this technology and Wi-Fi is a trademark of Wi-Fi Alliance. Vic Hayes is said to be the father of Wi-Fi, the chairman of IEEE 802.11 working group formed in 1990. Today almost all mobile devices support connectivity with Wi-Fi. It’s similar to wired Local Area Network, but in this case, it’s Wireless LAN. Nowadays Wi-Fi is one of the demanded parts of infrastructures of a metropolitan area as it provides means of connectivity to the web.
In 1985 Federal Communication Commission or FCC an American regulatory body regarding communication matters took the decision to open several bands on radio spectrum that would be allowed to use without the need of government license, and that was the day one of Wi-Fi development.
Bands allocated to Wi-Fi were in use that time but not for communication purposes, so FCC made it available for communication purposes but the condition imposed was to avoid interference, so they used spread spectrum. Along with interference avoidance, SSFH added up to security too.
Then vendors like Proxim and Symblol developed proprietary devices for this unlicensed band and then the journey went on. In 2003 first phone was announced with Wi-Fi and cellular. Alone in 2009 one billion Wi-Fi modules were sold and in 2010 around the globe there were 1000,000 Wi-Fi Hotpots and that count reaches 70,000,000 figure by 2015, and this is development part of a brief description of Wi-Fi.
How Wi-Fi serves us:
1) No more problem of physical connection with wire hence increased mobility
2) All time reach to your Email and other personal virtual belongings
3) Supports Peer to Peer communication i.e. 802.11 to 802.11
4) Handsome bandwidth at 2.4 GHz
5) Public Wi-Fi made it easy remote access
6) Live streaming on your mobile devices
7) Access to your virtual stored data
8) Wi- Fi technology as better range than Bluetooth technology
10) Wi-Fi technology directly impacts our productivity
11) Wi-Fi Technology expands your reach
12) A new dimension of entertainment was introduced (Online Gaming)
13) VOIP makes conference call simple.
Barriers that limit Wi-Fi Effectiveness:
• Obstruction in the signal path of Wi-Fi tends to limit its range of availability.
• Devices far away from the Access point suffer slow speed issues and dis-connectivity
• Side by devices may interfere in its performance.
• Extended exposures to the sound level of radio signals may cause a headache.
• Wireless Security was a new dimension discovered after the implementation of this technology.
Advancements in Wi-Fi Technology:
Initially developed Wi-Fi was single banded that was 802.11n and it was at 2.4GHz then comes to the dual-band Wi-Fi 802.11n dual-band. In the mid-2012 Dual band 802.11n+11ac was introduced in the market and after that at the start of 2013 tri-band Wi-Fi was introduced. The 11ac used 5 GHz band and was way better than single banded, and that is 1300 Megabits per second throughput whereas first one .11n provides 600 Mbps.
Not only these growths worth sharing Wi-Fi Alliance but also working on a project to connect public Wi-Fi hotspots to Cellular networks. These days electrical appliances are developed that have embedded system along with Wi-Fi reception radios which are easy to connect with Wi-Fi and hence increase our control and access to our devices e.g. Smart TV, Smart Refrigerator and home automation also make use of Wi-Fi to connect to the internet. A brief description of Wi-Fi ended up on the conclusion that in future times queen of the wireless world would be Wi-Fi technology.
Wi-Fi: A brief history