{"id":28382,"date":"2017-10-15T17:16:38","date_gmt":"2017-10-15T11:46:38","guid":{"rendered":"https:\/\/www.wikitechy.com\/technology\/?p=28382"},"modified":"2017-10-15T17:16:38","modified_gmt":"2017-10-15T11:46:38","slug":"basics-wi-fi","status":"publish","type":"post","link":"https:\/\/www.wikitechy.com\/technology\/basics-wi-fi\/","title":{"rendered":"Basics of Wi-Fi"},"content":{"rendered":"<p>We\u2019ve been studying a lot about the Wired Network. Ethernet is the most common example. Wired networks differ from wireless which use radio waves rather than transmitting electrical signals over the cables.<br \/>\nWi-Fi stands for Wireless Fidelity. It is a technology for wireless local area networking with devices based on <a href=\"https:\/\/en.wikipedia.org\/wiki\/IEEE_802.11\" target=\"_blank\" rel=\"noopener\">IEEE 802.11<\/a> standards.<br \/>\nWi-Fi compatible devices can connect to the internet via WLAN network and a wireless <strong><a href=\"https:\/\/en.wikipedia.org\/wiki\/Wireless_access_point\" target=\"_blank\" rel=\"noopener\">access point<\/a><\/strong> abbreviated as AP. Every WLAN has an access point which is responsible for receiving and transmitting data from\/to users.<br \/>\nIEEE has defined certain specifications for wireless LAN, called <strong>IEEE 802.11<\/strong> which covers physical and data link layers.<\/p>\n<p>The architecture of this standard has 2 kinds of services:<br \/>\n<strong>1. BSS (Basic Service Set)<br \/>\n2. ESS (Extended Service Set)<\/strong><\/p>\n[ad type=&#8221;banner&#8221;]\n<p><strong>BSS <\/strong>is the basic building block of WLAN. It is made of wireless mobile stations and an optional central base station called Access Point.<br \/>\nStations can form a network without an AP and can agree to be a part of a BSS.<br \/>\nA BSS without an AP cannot send data to other BSSs and defines a standalone network. It is called <strong>Ad-hoc network<\/strong> or <strong>Independent BSS(IBSS).<\/strong><br \/>\nA BSS with AP is <strong>infrastructure network.<\/strong><br \/>\nThe figure below depicts an IBSS, BSS with the blue coloured box depicting an AP.<\/p>\n<p><strong>ESS<\/strong> is made up of 2 or more BSSs with APs. BSSs are connected to the distribution system via their APs. Distribution system can be any IEEE LAN such as Ethernet.[ad type=&#8221;banner&#8221;]\n<p>ESS has 2 kinds of stations:<\/p>\n<p>1. Mobile \u2013 stations inside the BSS<br \/>\n2. Stationary \u2013 AP stations that are part of wired LAN.<\/p>\n<p>The topmost blue box represents the distribution system and the other 2 blue boxes represent the APs of 2 BSSs.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Basics of Wi-Fi &#8211; Basics of Wi-Fi &#8211; We\u2019ve been studying a lot about the Wired Network. Ethernet is the most common example.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[82277,71771],"tags":[82865,82866,82863,82868,82864,82867,82870,82869],"class_list":["post-28382","post","type-post","status-publish","format-standard","hentry","category-computer-networks","category-cs-subjects","tag-basics-of-wifi-for-gate","tag-basics-of-wifi-technology-pdf","tag-wifi-basic-concepts","tag-wifi-basic-concepts-pdf","tag-wifi-basics-pdf","tag-wifi-basics-ppt","tag-wifi-pdf-download","tag-wifi-tutorial-for-beginners"],"_links":{"self":[{"href":"https:\/\/www.wikitechy.com\/technology\/wp-json\/wp\/v2\/posts\/28382","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wikitechy.com\/technology\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wikitechy.com\/technology\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wikitechy.com\/technology\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wikitechy.com\/technology\/wp-json\/wp\/v2\/comments?post=28382"}],"version-history":[{"count":0,"href":"https:\/\/www.wikitechy.com\/technology\/wp-json\/wp\/v2\/posts\/28382\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.wikitechy.com\/technology\/wp-json\/wp\/v2\/media?parent=28382"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wikitechy.com\/technology\/wp-json\/wp\/v2\/categories?post=28382"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wikitechy.com\/technology\/wp-json\/wp\/v2\/tags?post=28382"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}