MTS_2025_wifi_8_technology.pdf

1、 2025 Nokia1Lorenzo Galati GiordanoDistinguished Member of Technical StaffNokia Bell Labs,Stuttgart(Germany)lorenzo.galati_giordanonokia-bell-November 2025Wi-Fi 8 technology introduction 2025 Nokia2Evolution of Wi-Fi802.11ac(Wi-Fi 5)8x8 SU-MIMO,DL MU-MIMO Channel bonding,256 QAM802.11ax(Wi-Fi 6/6E)O

2、FDMA,UL&DL MU-MIMOTWT,1024 QAM802.11be(Wi-Fi 7)Multi-Link Operation(lower latency)R-TWT(improved determinism)Multi-RU,4KQAM,enhancedQoSPhysical RateBandwidth(Max)FrequencyLaunchWi-Fi AllianceIEEE(Task Group)1-2 Mbps20 MHz2.4 GHz1997-802.11Up to 11 Mbps20 MHz2.4 GHz1999-802.11bUp to 54 Mbps20 MHz5 GH

3、z1999-802.11aUp to 54 Mbps20 MHz2.4 GHz2003-802.11gUp to 600 Mbps40 MHz2.4,5 GHz2009Wi-Fi 4802.11nUp to 6,9 Gbps160 MHz5 GHz2013Wi-Fi 5802.11acUp to 9,6 Gbps160 MHz2.4,5,6 GHz2021Wi-Fi 6Wi-Fi 6E802.11axUp to 23 Gbps(single link)320 MHz2.4,5,6 GHz2024Wi-Fi 7802.11be 2025 Nokia3802.11bn(Wi-Fi 8)Object

4、ivesA paradigm shift:From 802.11be EHT(Extremely High Throughput)to 802.11bn UHR(Ultra High Reliability)Main improvements from EHT(PAR Jul.2023):+25%data rates,even at lower SINR levels.-25%tail latency-25%loss of MAC protocol data units(MPDUs),even in scenarios with mobility and overlapping BSSs.AP

5、 Power saving and peer-to-peer operation.Carrier frequencies between 1 and 7.125 GHz 2025 Nokia4Timeline for 802.11bnUltra HighReliability(UHR)Multi-link operationMultiple RU per STAOptimized triggered uplink accessMulti-AP coordinationSeamless roamingNon-Primary Channel Access(NPCA)AP power savingW

6、i-Fi 7 certified productsWi-Fi 8certifiedProductsUHR studygroup(SG)802.11beDraft 2.02021202220232024MayMayFebNov20212022202320242028IEEE 802.11bnJulJul NovUHR projectauthorizationrequest(PAR)IEEE 802.11be2028802.11beDraft 4.0802.11beFinal amendment802.11beDraft 3.0320 MHz channels4K QAMRestricted Ta