The first “letter” following the June 1997 approval of the 802.11 standard, this one provided for operation in the 5GHz frequency, with data rates up to 54Mbps. 802.11gĪpproved in June 2003, 802.11g was the successor to 802.11b, able to achieve up to 54Mbps rates in the 2.4GHz band, matching 802.11a speed but within the lower frequency range. When you hear wireless LAN vendors use the term “dual-band”, it refers to being able to deliver data across these two frequencies. The first standard to specify MIMO, 802.11n was approved in October 2009 and allows for usage in two frequencies - 2.4GHz and 5GHz, with speeds up to 600Mbps. Some router vendors include technologies that support the 2.4GHz frequency via 802.11n, providing support for older client devices that may have 802.11b/g/n radios, but also providing additional bandwidth for improved data rates. With Multiple Input, Multiple Output (MIMO) – multiple antennas on sending and receiving devices to reduce error and boost speed – this standard supports data rates up to 3.46Gbps. 802.11ac (Wi-Fi 5)Ĭurrent home wireless routers are likely 802.1ac-compliant, and operate in the 5 GHz frequency space. 802.11adĪpproved in December 2012, 802.11ad is very fast - it can provide up to 6.7Gbps of data rate across the 60 GHz frequency, but that comes at a cost of distance – you achieve this only if your client device is situated within 3.3 meters (only 11 feet) of the access point. The protocol was approved in September 2016 and published in May 2017.
#2.4 GHZ WIFI SPEED BLUETOOTH#
But it also could compete with Bluetooth technologies in the home due to its lower energy needs. In addition, the standard aims to have lower energy consumption, useful for Internet of Things devices to communicate across long ranges without using a lot of energy. The purpose of 802.11ah is to create extended-range Wi-Fi networks that go beyond typical networks in the 2.4GHz and 5GHz space (remember, lower frequency means longer range), with data speeds up to 347Mbps. In the U.S., this includes 908-928MHz, with varying frequencies in other countries.
#2.4 GHZ WIFI SPEED TV#
After that is a description of standards that are still in the works.Īlso known as Wi-Fi HaLow, 802.11ah defines operation of license-exempt networks in frequency bands below 1GHz (typically the 900 MHz band), excluding the TV White Space bands.
#2.4 GHZ WIFI SPEED UPDATE#
To help clarify the situation, here’s an update on these physical-layer standards within 802.11, listed in reverse chronological order, with the newest standards at the top, and the oldest toward the bottom. The traditional names of these standards create quite an alphabet soup, made all-the-more confusing because they are not arranged alphabetically. Also, the IEEE, which continues to work on newer versions of 802.11, has not adopted these new names, so trying to track down details about them using the new names will make the task more complicated. Meanwhile it's important to know that the Wi-Fi Alliance has not made up simpler names for all the 802.11 standars, so it's important to be familiar with the traditional designations. That happened in April 2020, vastly expanding the potential capacity of Wi-Fi 6E access points vs. There is a subcategory of Wi-Fi 6 called Wi-Fi 6E, which was written into the 802.11ax specification to accommodate additional spectrum that might be added down the road. The idea, according to the Wi-Fi Alliance, is to make matching endpoint and router capabilities a simpler matter for the rank-and-file user of Wi-Fi technology. Under its naming convention, the alliance calls 802.11ax Wi-Fi 6. The IEEE naming scheme for the standard is a little tough to get used to, and in an effort to make it easier to understand, the Wi-Fi Alliance has come up with some simpler names. They also address new technologies that reduce power consumption. The 802.11 standards codify improvements that boost wireless throughput and range as well as the use of new frequencies as they become available. These standards, with names such as 802.11b (pronounced “Eight-O-Two-Eleven-Bee”, ignore the “dot”) and 802.11ac, comprise a family of specifications that started in the 1990s and continues to grow today. In the world of wireless, the term Wi-Fi is synonymous with wireless access in general, despite the fact that it is a specific trademark owned by the Wi-Fi Alliance, a group dedicated to certifying that Wi-Fi products meet the IEEE’s set of 802.11 wireless standards.
0 kommentar(er)
