Table-2: Comparison of wired and wireless network capacity Wireless is truly expected to be the primary access technology.
Per user based on design guidelines by vendors and industry experts. In contrast, most Wi-Fi networks provision 5Mbps or less Wired networks run Gigabit Ethernet, delivering close to 100Mbps of bandwidth to the user Today, most Wi-Fi networks provide a fraction of the capacity enjoyed by wired users. However, is it enough to make wireless the primary connection to the network? The increase in performance offered by 802.11ac is critical to the success of wireless. To connect to each other simultaneously on the same radio. Moving from MIMO (multiple-input and multiple-output) technology in 802.11n toĪdvanced Multi-User MIMO (or MU-MIMO) will add the ability for multiple devices Support for up to 8 spatial streams and 160MHz channels in future versions ofĨ02.11ac takes the maximum data rates up to 6.9Gbps. Increased channel bandwidth from 20MHz or 40MHz (used by 802.11n) to 80MHz More) the throughput compared to 802.11n:Įnhanced modulation techniques push beyond 64QAM (used by 802.11n) toĢ56QAM, making spectrum usage 30% more efficient. To achieve higher performance, 802.11ac uses several technology advancements to triple (and This new standard, showing confidence in the imminent passage of the standard. Many leading consumer-grade Wi-Fi vendors have begun shipping products based on Ratification of the IEEE 802.11ac standard and testing by the Wi-Fi Alliance is expected inĢ013. The following table summarizes the key characteristics of To simplify network migration, 802.11ac will maintain backward compatibility withĮxisting 802.11n equipment.
This band provides seven times theĬhannel bandwidth and has less interference compared to the previously more popular 2.4GHzīand. A key characteristic ofĨ02.11ac is that it operates only in the 5GHz band. More wireless performance, the industry is about to release the next Wi-Fi standard: 802.11ac.Įxisting 802.11n networks will eventually be replaced by 802.11ac. Dependency on mobileĪpplications and cloud-access are now business-critical.
Unlike wired users, mobile users expect to connect anytime,Īnywhere – at home, in the office, in classrooms, and at conferences. Over 1 million smart phones are activated daily with tablets forecasted to That ratio of wireless devices will continue to explode as it reachesĪ 7:1 by 2016. Wireless has become the primary access to the network. Doing so will require utilizing not only 802.11ac but also multi-radio Wi-Fi network capacity must play catch up to Wired networks have moved from shared hubs to dedicated multi-port switches, but the sameĪrchitectural shift has not happened for wireless. World with protocol overhead and interference, actual throughput will be closer to 433Mbps. Throughput for Wi-Fi will go from 450Mbps with 802.11n to 1.3Gbps. With the adoption of 802.11ac, theoretical With the application performance and user experience they have come to expect from theirġGB and 10GB wired- Ethernet networks. Standard is a significant improvement in performance it is not enough to provide end users Wireless has become the preferred and often the only form of access. Networks by 2014.The emerging 802.11ac standard will enhance these wireless networks byĭelivering much greater performance than today‘s 802.11n standard. Generated by these devices on wireless networks will overtake the total traffic on wired Millions of new wireless devices are activated every day.
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