IEEE 802.11ay, ''Enhanced Throughput for Operation in License-exempt Bands above 45 GHz'', is a follow-up to
IEEE 802.11ad WiGig standard which quadruples the bandwidth and adds
MIMO up to 8 streams.
Development started in 2015 and the final standard IEEE 802.11ay-2021 was approved in March 2021.
Technical details
802.11ay is a type of WLAN in the
IEEE 802.11 family of
Wi-Fi
Wi-Fi () is a family of wireless network protocols based on the IEEE 802.11 family of standards, which are commonly used for Wireless LAN, local area networking of devices and Internet access, allowing nearby digital devices to exchange data by ...
WLANs. It is an improvement on
IEEE 802.11ad rather than a new standard. It uses the 60 GHz band and has a transmission rate of 20–40 Gbit/s and an extended transmission distance of 300–500 meters. It includes mechanisms for
channel bonding and
MU-MIMO technologies.
It was originally expected to be released in 2017, but was delayed until 2021.
Where 802.11ad uses a maximum of 2.16 GHz bandwidth, 802.11ay bonds four of those channels together for a maximum bandwidth of 8.64 GHz. MIMO is also added with a maximum of four streams.
The link-rate per stream is 44 Gbit/s, with four streams this goes up to 176 Gbit/s. Higher order modulation is also added, probably up to 256-QAM.
Applications could include replacement for
Ethernet
Ethernet ( ) is a family of wired computer networking technologies commonly used in local area networks (LAN), metropolitan area networks (MAN) and wide area networks (WAN). It was commercially introduced in 1980 and first standardized in 198 ...
and other cables within offices or homes, and provide backhaul connectivity outside for service providers.
802.11ay should not be confused with the similarly named
802.11ax that was officially approved in 2021. The 802.11ay standard is designed to run at much higher frequencies. The lower frequency of 802.11ax enables it to penetrate walls somewhat, while 802.11ay is generally blocked by walls.
Draft versions
Draft version 0.1 of 802.11ay was released in January 2017, followed by draft version 0.2 in March 2017. Draft version 1.0 was made available in November 2017, and draft 1.2 was available as of April 2018.
Draft version 7.0 was released in December 2020 and the Final 802 Working Group Approval was received in February 2021.
See also
*
List of WLAN channels
Wireless LAN (WLAN) channels are frequently accessed using IEEE 802.11 protocols. The 802.11 standard provides several radio frequency bands for use in Wi-Fi communications, each divided into a multitude of channels numbered at 5 MHz spacin ...
*
IEEE
The Institute of Electrical and Electronics Engineers (IEEE) is an American 501(c)(3) organization, 501(c)(3) public charity professional organization for electrical engineering, electronics engineering, and other related disciplines.
The IEEE ...
References
{{IEEE standards
External links
IEEE 802.11ay-2021— ''IEEE Standard for Information Technology — Telecommunications and Information Exchange between Systems Local and Metropolitan Area Networks — Specific Requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications Amendment 2: Enhanced Throughput for Operation in License-exempt Bands above 45 GHz.''
at IEEE802
Wireless networking