Evolution and Evaluation of Wireless Connectivity in 5th Generation
Wi-Fi has become such an amazingly successful technology because it has continuously advanced while remaining backwards compatible. 802.11ac can be considered the next step after 802.11n, along the path running from 11b, to 11a/g, then 11n and now 802.11ac. 802.11ac has the capability to maintain a higher level of performance at any range, compared with its predecessors and it is likely to be introduced along with related amendments to 802.11 including video-related improvements in 802.11aa (video transport streams) and 802.11ad (very high throughput, short-range at 60GHz). 802.11ac solves mobile devices problems by significantly improving range and providing 3 times the performance, while preserving the battery life.