802.11ad vs 802.11ay-Difference between 802.11ad and 802.11ay

This page compares WLAN 802.11ad vs 802.11ay and mentions difference between 802.11ad and 802.11ay.

WLAN 802.11ad

Introduction:
WLAN 802.11ad standard is successor to IEEE 802.11ac standard. It is known as WiGig. It offers very high data rate (i.e. 7 Gbps) at short distance (i.e. 1 to 10 meters). The devices operate at frequency of 60GHz. IEEE 802.11ay is used for high data rate applications e.g. such as video streaming, HDTV, rapid upload/download, backhaul connectivity and more. It delivers high data rate due to higher bandwidth of about 2.16 GHz. It also supports legacy wifi networks at 2.4 GHz as well as 5 GHz.

Following are the features of WLAN 802.11ad.
• Frequency range : unlicensed frequency allocations around 60 GHz (58.32 GHz,60.48 GHz,62.64 GHz, 64.80 GHz).
• Backward compatibility: It is not backward compatible to 11ac and 11n but It is a completely new standard developed to cater extremely high data rate and to provide short range wireless connectivity.
• No. of channels/Channel bandwidth : 4/each having 2.16 GHz wide BW
• Data rate: throughput of 7 to 8 Gbps
• Distance : More than about 10 meters with beamforming enabled.

WLAN 802.11ay

Introduction:
It is considered to be successor to 802.11ad standard operating at 60 GHz frequency band. It is developed to achieve a maximum throughput of at least 20 Gbps while maintaining or improving the power efficiency per station. It supports channel bonding and MU-MIMO. The process of achieving wider bandwidth from multiple channels is known as channel bonding.

Following are the features of WLAN 802.11ay.
• Data rate: Throughput of about 20 to 40 Gbps
• Distance: About 300 to 500 meters
• Maximum BW: 8.64 GHz (Bonds four channels having 2.16 GHz BW each).
• MIMO with max. four streams are supported
• Higher Order modulation of about 256-QAM is supported
• Band switching for handoffs between 2.4 GHz, 5 GHz and 60 GHz
• Supports channel bonding, contiguous and non-contiguous channel aggregation.
• SU and downlink MU-MIMO ( multi-user MIMO )
• OFDM, SC with 64 point non-uniform constellation, LDPC etc.

Difference between 802.11ad and 802.11ay

Following table mentions difference between 802.11ad and 802.11ay.

Specifications	802.11ad	802.11ay
Year of introduction	2016	Early 2019
Bandwidth	2.16 GHz	8.64 GHz
Operating frequency	60 GHz	60 GHz
MIMO	Not supported	Supported MIMO with 4 streams, channel bonding and MU-MIMO
Data rate or throughout	7 to 8 Gbps	20 to 40 Gbps
Coverage distance	10 meters	300 to 500 meters
256-QAM	Not supported	Supported

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