This article has multiple issues. Please help improve it or discuss these issues on the talk page . (Learn how and when to remove these template messages)
|
Formation | 1999 |
---|---|
Headquarters | Austin, Texas, United States |
Website | www |
Formerly called | Wireless Ethernet Compatibility Alliance |
The Wi-Fi Alliance is a non-profit [1] organization that owns the Wi-Fi trademark. Manufacturers may use the trademark to brand products certified for Wi-Fi interoperability. It is based in Austin, Texas.
Early 802.11 products suffered from interoperability problems because the Institute of Electrical and Electronics Engineers (IEEE) had no provision for testing equipment for compliance with its standards.
In 1999, pioneers of a new, higher-speed variant endorsed the IEEE 802.11b specification to form the Wireless Ethernet Compatibility Alliance (WECA) and branded the new technology Wi-Fi. [2] [3]
The group of companies included 3Com, Aironet (acquired by Cisco), Harris Semiconductor (now Intersil), Lucent (was Alcatel-Lucent, then acquired by Nokia), Nokia and Symbol Technologies (acquired by Motorola, Zebra Technologies, and now Extreme Networks). [4]
The alliance lists Apple, Comcast, Samsung, Sony, LG, Intel, Dell, Broadcom, Cisco, Qualcomm, Motorola, Microsoft, Texas Instruments, and T-Mobile as key sponsors. The charter for this independent organization was to perform testing, certify interoperability of products, and to promote the technology. [5]
WECA renamed itself the Wi-Fi Alliance in 2002. [6]
Most producers of 802.11 equipment became members, and as of 2012, [update] the Wi-Fi Alliance included over 550 member companies. The Wi-Fi Alliance extended Wi-Fi beyond wireless local area network applications into point-to-point and personal area networking and enabled specific applications such as Miracast.
The Wi-Fi Alliance owns and controls the "Wi-Fi Certified" logo, a registered trademark, which is permitted only on equipment which has passed testing. Purchasers relying on that trademark may have greater chances of interoperation than otherwise. Testing involves not only radio and data format interoperability, but security protocols, as well as optional testing for quality of service and power management protocols. [7] Wi-Fi Certified products have to demonstrate that they can perform well in networks with other Wi-Fi Certified products, running common applications, in situations similar to those encountered in everyday use. Certification employs 3 principles:
The Wi-Fi Alliance definition of interoperability demands that products have to show satisfactory performance levels in typical network configurations and have to support both established and emerging applications. The Wi-Fi Alliance certification process includes three types of tests to ensure interoperability. Wi-Fi Certified products are tested for:
The Wi-Fi Alliance provides certification testing in two levels: [8]
Mandatory:
Optional:
There are a number of certification programs by Wi-Fi alliance: [14]
Generation | IEEE standard | Adopted | Maximum link rate (Mb/s) | Radio frequency (GHz) |
---|---|---|---|---|
Wi-Fi 8 | 802.11bn | expected 2028 [15] | 800 000 [16] | 2.4, 5, 6 [17] |
Wi-Fi 7 | 802.11be | expected 2024 | 0.4–23 059 | 2.4, 5, 6 [18] |
Wi-Fi 6E | 802.11ax | 2021 | 0.4–9608 [19] | 2.4, 5, 6 [lower-alpha 1] |
Wi-Fi 6 | 2.4, 5 | |||
Wi-Fi 5 | 802.11ac | 2013 | 6.5–6933 | 5 [lower-alpha 2] |
Wi-Fi 4 | 802.11n | 2009 | 6.5–600 | 2.4, 5 |
(Wi-Fi 3*) | 802.11g | 2003 | 6–54 | 2.4 |
(Wi-Fi 2*) | 802.11a | 1999 | 5 | |
(Wi-Fi 1*) | 802.11b | 1999 | 1–11 | 2.4 |
(Wi-Fi 0*) | 802.11 | 1997 | 1–2 | 2.4 |
*Wi‑Fi 0, 1, 2, and 3 are named by retroactive inference. They do not exist in the official nomenclature. [20] [21] [22] |
The 802.11 protocols are IEEE standards, identified as 802.11b, 11g, 11n, 11ac, etc. In 2018 The Wi-Fi Alliance created the simpler generation labels Wi-Fi 4 - 6 beginning with Wi-Fi 5, retroactively added Wi-Fi 4 and later added Wi-Fi 6 and Wi-Fi 6E. [23] [24] [25] Wi-Fi 5 had Wave 1 and Wave 2 phases. Wi-Fi 6E extends the 2.4/5 GHz range to 6 GHz, where licensed. Listed in historical and capacity order. See the individual 802.11 articles for version details or 802.11 for a composite summary.
WiGig refers to 60 GHz wireless local area network connection. It was initially announced in 2013 by Wireless Gigabit Alliance, and was adopted by the Wi-Fi Alliance in 2013. They started certifying in 2016. The first version of WiGig is IEEE 802.11ad, and a newer version IEEE 802.11ay was released in 2021. [26] [27] [28]
In October 2010, the Alliance began to certify Wi-Fi Direct, that allows Wi-Fi-enabled devices to communicate directly with each other by setting up ad-hoc networks, without going through a wireless access point or hotspot. [29] [30] Since 2009 when it was first announced, some suggested Wi-Fi Direct might replace the need for Bluetooth on applications that do not rely on Bluetooth low energy. [31] [32]
Wi-Fi Protected Access is a security mechanism based on IEEE 802.11i amendment to the standard that the Wi-Fi Alliance started to certify from the year of 2003. [33]
IBSS with Wi-Fi Protected Setup would enable the creation of ad hoc network between devices directly without central access point. [34]
Wi-Fi Passpoint, alternatively known as Hotspot 2.0, is a solution for enabling inter-carrier roaming. [35] It utilizes IEEE 802.11u.
Wi-Fi Easy Connect is a protocol that would enable easily establishing connections via QR code. [36]
Wi-Fi Protected Setup (WPS) is a network security standard to simply create a secure wireless home network, created and introduced by Wi-Fi Alliance in 2006.
Miracast, introduced in 2012, is a standard for wireless display connections from devices such as laptops, tablets, or smartphones. Its goal is to replace cables connecting from the device to the display. [37]
Wi-Fi Aware is an interoperability certification program announced in January 2015 that enables device users, when in the range of a particular access point or another compatible device, to receive notifications of applications or services available in the proximity. [38] [39] Later versions of this standard included new features such as the capability to establish a peer-to-peer data connection for file transfer. [40]
Fears were voiced immediately in media that it would be predominantly used for proximity marketing. [41]
Wi-Fi Location is a type of Wi-Fi positioning system, and the certification could help providing accuracy to in-door positioning. [42]
TDLS, or Tunneled Direct Link Setup, is "a seamless way to stream media and other data faster between devices already on the same Wi-Fi network" based on IEEE 802.11z and added to Wi-Fi Alliance certification program in 2012. Devices using it communicate directly with one another, without involving the wireless network's router. [43]
The certification of Wi-Fi Agile Multiband indicate devices can automatically connect and maintain connection in the most suitable way. It covers the IEEE 802.11k standard about access point information report, the IEEE 802.11v standard that enable exchanging information about state of network, IEEE 802.11u standard about additional information of a Wi-Fi network, IEEE 802.11r about fast transition roaming between different access points, as well as other technologies specified by Wi-Fi alliance.
Wi-Fi EasyMesh is a certification program based on its Multi-Access Point specification for creating Wi-Fi meshes from products by different vendors, [44] based on IEEE 1905.1. It is intended to address the problem of Wi-Fi systems that need to cover large areas where several routers serve as multiple access points, working together to form a larger/extended and unified network. [45] [46] [47]
Formerly known as Carrier Wi-Fi, Wi-Fi Vantage is a certification program for operators to maintain and manage quality Wi-Fi connections in high usage environment. [48] It includes a number of certification, such as Wi-Fi certified ac (as in 802.11ac), Passpoint, Agile Multiband, and Optimized Connectivity. [49]
Wi-Fi Multimedia (WMM) or known as Wireless Multimedia Extensions is a Wi-Fi Alliance interoperability certification based on the IEEE 802.11e standard. It provides basic quality of service (QoS) features to IEEE 802.11 networks.
Wi-Fi Home Design is a set of guidelines released by Wi-Fi alliance for inclusion of wireless network in home design. [50]
Wi-Fi HaLow is a standard for low-power wide-area (LPWA) connection standard using sub-1 GHz spectrum for IoT devices. It is based on IEEE 802.11ah. [51]
IEEE 802.11 is part of the IEEE 802 set of local area network (LAN) technical standards, and specifies the set of medium access control (MAC) and physical layer (PHY) protocols for implementing wireless local area network (WLAN) computer communication. The standard and amendments provide the basis for wireless network products using the Wi-Fi brand and are the world's most widely used wireless computer networking standards. IEEE 802.11 is used in most home and office networks to allow laptops, printers, smartphones, and other devices to communicate with each other and access the Internet without connecting wires. IEEE 802.11 is also a basis for vehicle-based communication networks with IEEE 802.11p.
Wi-Fi is a family of wireless network protocols based on the IEEE 802.11 family of standards, which are commonly used for local area networking of devices and Internet access, allowing nearby digital devices to exchange data by radio waves. These are the most widely used computer networks, used globally in home and small office networks to link devices and to provide Internet access with wireless routers and wireless access points in public places such as coffee shops, hotels, libraries, and airports.
Wi-Fi Protected Access (WPA), Wi-Fi Protected Access 2 (WPA2), and Wi-Fi Protected Access 3 (WPA3) are the three security certification programs developed after 2000 by the Wi-Fi Alliance to secure wireless computer networks. The Alliance defined these in response to serious weaknesses researchers had found in the previous system, Wired Equivalent Privacy (WEP).
Worldwide Interoperability for Microwave Access (WiMAX) is a family of wireless broadband communication standards based on the IEEE 802.16 set of standards, which provide physical layer (PHY) and media access control (MAC) options.
IEEE 802.16 is a series of wireless broadband standards written by the Institute of Electrical and Electronics Engineers (IEEE). The IEEE Standards Board established a working group in 1999 to develop standards for broadband for wireless metropolitan area networks. The Workgroup is a unit of the IEEE 802 local area network and metropolitan area network standards committee.
Wireless Multimedia Extensions (WME), also known as Wi-Fi Multimedia (WMM), is a Wi-Fi Alliance interoperability certification, based on the IEEE 802.11e standard. It provides basic Quality of service (QoS) features to IEEE 802.11 networks. WMM prioritizes traffic according to four Access Categories (AC): voice (AC_VO), video (AC_VI), best effort (AC_BE), and background (AC_BK). However, it does not provide guaranteed throughput. It is suitable for well-defined applications that require QoS, such as Voice over IP (VoIP) on Wi-Fi phones (VoWLAN).
IEEE 802.11u-2011 is an amendment to the IEEE 802.11-2007 standard to add features that improve interworking with external networks.
IEEE 802.11n-2009, or 802.11n, is a wireless-networking standard that uses multiple antennas to increase data rates. The Wi-Fi Alliance has also retroactively labelled the technology for the standard as Wi-Fi 4. It standardized support for multiple-input multiple-output, frame aggregation, and security improvements, among other features, and can be used in the 2.4 GHz or 5 GHz frequency bands.
A home network or home area network (HAN) is a type of computer network that facilitates communication among devices within the close vicinity of a home. Devices capable of participating in this network, for example, smart devices such as network printers and handheld mobile computers, often gain enhanced emergent capabilities through their ability to interact. These additional capabilities can be used to increase the quality of life inside the home in a variety of ways, such as automation of repetitive tasks, increased personal productivity, enhanced home security, and easier access to entertainment.
IEEE 802.11 – or more correctly IEEE 802.11-1997 or IEEE 802.11-1999 – refer to the original version of the IEEE 802.11 wireless networking standard released in 1997 and clarified in 1999. Most of the protocols described by this early version are rarely used today.
IEEE 802.11a-1999 or 802.11a was an amendment to the IEEE 802.11 wireless local network specifications that defined requirements for an orthogonal frequency-division multiplexing (OFDM) communication system. It was originally designed to support wireless communication in the unlicensed national information infrastructure (U-NII) bands as regulated in the United States by the Code of Federal Regulations, Title 47, Section 15.407.
IEEE 802.11b-1999 or 802.11b is an amendment to the IEEE 802.11 wireless networking specification that extends throughout up to 11 Mbit/s using the same 2.4 GHz band. A related amendment was incorporated into the IEEE 802.11-2007 standard.
IEEE 802.11g-2003 or 802.11g is an amendment to the IEEE 802.11 specification that operates in the 2.4 GHz microwave band. The standard has extended link rate to up to 54 Mbit/s using the same 20 MHz bandwidth as 802.11b uses to achieve 11 Mbit/s. This specification, under the marketing name of Wi‑Fi, has been implemented all over the world. The 802.11g protocol is now Clause 19 of the published IEEE 802.11-2007 standard, and Clause 19 of the published IEEE 802.11-2012 standard.
MiWi is a proprietary wireless protocol supporting peer-to-peer, star network connectivity. It was designed by Microchip Technology. MiWi uses small, low-power digital radios based on the IEEE 802.15.4 standard, and is designed for low-power, cost-constrained networks, such as industrial monitoring and control, home and building automation, remote control, wireless sensors, lighting control, and automated meter reading.
The Wireless Gigabit Alliance was a trade association that developed and promoted the adoption of multi-gigabit per second speed wireless communications technology "WiGig" operating over the unlicensed 60 GHz frequency band. The alliance was subsumed by the Wi-Fi Alliance in March 2013.
WiGig, alternatively known as 60 GHz Wi-Fi, refers to a set of 60 GHz wireless network protocols. It includes the current IEEE 802.11ad standard and also the IEEE 802.11ay standard.
IEEE 802.11ac-2013 or 802.11ac is a wireless networking standard in the IEEE 802.11 set of protocols, providing high-throughput wireless local area networks (WLANs) on the 5 GHz band. The standard has been retroactively labelled as Wi-Fi 5 by Wi-Fi Alliance.
Avnu Alliance is a consortium of member companies working together to create an interoperable ecosystem of low-latency, time-synchronized, highly reliable networking devices using the IEEE open standard, Time-Sensitive Networking (TSN) and its Pro AV networking protocol, Milan. Avnu Alliance creates comprehensive certification programs to ensure interoperability of network devices. In the Professional Audio Video (AV) industry, Alliance member companies worked together to develop Milan: a standards-based, user-driven deterministic network protocol for professional media, that through certification, assures devices will work together at new levels of convenience, reliability, and functionality. Milan™ is a standards-based deterministic network protocol for real time media. Avnu Members may use the Avnu-certified or Milan-certified logo on devices that pass the conformance tests from Avnu. Not every device based on AVB or TSN is submitted for certification to the Avnu Alliance. The lack of the Avnu logo does not necessarily imply a device is incompatible with other Avnu-certified devices. The Alliance, in conjunction with other complimentary standards bodies and alliances, provides a united network foundation for use in professional AV, automotive, industrial control and consumer segments.
Wi-Fi 6, or IEEE 802.11ax, is an IEEE standard from the Wi-Fi Alliance, for wireless networks (WLANs). It operates in the 2.4 GHz and 5 GHz bands, with an extended version, Wi-Fi 6E, that adds the 6 GHz band. It is an upgrade from Wi-Fi 5 (802.11ac), with improvements for better performance in crowded places. Wi-Fi 6 covers frequencies in license-exempt bands between 1 and 7.125 GHz, including the commonly used 2.4 GHz and 5 GHz, as well as the broader 6 GHz band.
IEEE 802.11be, dubbed Extremely High Throughput (EHT), is a wireless networking standard in the IEEE 802.11 set of protocols, which is designated Wi-Fi 7 by Wi-Fi Alliance. It has built upon 802.11ax, focusing on WLAN indoor and outdoor operation with stationary and pedestrian speeds in the 2.4, 5, and 6 GHz frequency bands.