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Wi-Fi 6

Enhancements for High-Efficiency Wireless LAN Specifications

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About Wilus Portfolio

The 802.11ax (“Wi-Fi 6”) Standard was published in May 2021. This latest generation of Wi-Fi was designed to address the problem of low efficiency resulting from the massive increase in the number of devices accessing the Internet over the past decade. Wi-Fi 6 addresses this problem by increasing the average throughput per user by four and the number of concurrent users by more than three in high density scenarios (e.g., offices, campuses, airports, stadiums, etc.) when compared to Wi-Fi 5, and provides other improvements such as extended wireless range, longer battery life, and coexistence with legacy Wi-Fi devices.

Such significant technical improvements are enabled through the addition of more than 40 core features: the innovations covered by the Wilus’ Portfolio contribute to about 90% of them.

The improvement evolution of certain technical features from Wi-Fi 4 to Wi-Fi 6, that makes possible this accommodation of modern-day wireless connectivity, is illustrated below.

FeaturesWi-Fi 4Wi-Fi 5Wi-Fi 6
IEEE 802.11n (HT) - High ThroughputIEEE 802.11ac (VHT)- Very High ThroughputIEEE 802.11ax (HE) - High Efficiency
Frequency bands [GHz] 2.4,5 5 2.4, 5 and 6
Channel widths [MHz] 20, 40 20, 40, 80, 160(80+80) 20, 40, 80, 160(80+80)
OFDM numerology 64 tones / 20 MHz 64 tones / 20 MHz 256 tones / 20 MHz
OFDM symbol duration 3.2 μs (GI = 0.4/0.8 μs) 3.2 μs (GI = 0.4/0.8 μs) 12.8 μs (GI = 0.8/1.6/3.2 μs)
Modulations BPSK, QPSK, 16/64-QAM BPSK, QPSK, 16/64-QAM, 256-QAM BPSK, QPSK, 16/64/256-QAM, 1024-QAM
Forward Error Correction BCC mandatory, LDPC optional BCC mandatory, LDPC optional BCC mandatory, LDPC mandatory
MU transmissions SU-MIMO SU-MIMO
DL MU-MIMO
DL & UL SU/MU-MIMO DL & UL OFDMA
OFDMA (RU sizes, subcarriers) - - 26, 52, 106, 242, 484, 996, 2x996
MU-MIMO stations Up to 4 STAs (4SS) Up to 4 STAs (8SS) Up to 8 STAs (8SS)
Max. throughput 600 Mbps 6.933 Gbps 9.607 Gbps
Table 1 - Evolution of Wi-Fi Standards (in orange the innovations introduced by the specific standard)

Wilus has been actively participating in and contributing its innovations to the Wi-Fi 6 standardization process since the very beginning of its development in 2014, featuring among the top technical contributors to the Standard.

The standard essential Wi-Fi 6 patent portfolio covering these innovations comprises more than 500 individual patent assets and is growing.