Standards et amendements
🗓️ 17 avril 2023
Comparaison
| PHY | Modulation | Date | Fréquence | BW | data rate | ||
| 802.11a | OFDM | OFDM | 1999 | 5Ghz | 20 | 6 9 12 18 24 36 48 54 | |
| 802.11b | HR-DSSS | DSSS | 1999 | 2.4Ghz | 22 | 1 2 5.5 11 | |
| 802.11g | ERP | OFDM | 2003 | 2.4Ghz | 20 | 6 9 12 18 24 36 48 54 | |
| 802.11n | HT | OFDM | 2009 | 2.4Ghz 5Ghz | 20/40 | MCS | |
| 802.11ac | VHT | OFDM | 2013 | 5Ghz | 20-160 | MCS | |
| 802.11ax | HE | OFDMA | 2021 | 2.4Ghz 5Ghz 6Ghz | 20-160 | MCS |
Détails
802.11b
HR-DSSS
- Amélioration des data-rates (5.5 et 11) par rapport au DSSS legacy 1997.
Masque spectrale DSSS :
802.11a
OFDM
- Utilisation de l'OFDM, bande passante réduite à 20MHz au lieu de 22MHz.
- Nouvelle bande de fréquence 5GHz
- Data rate plus élevés 6 9 12 18 24 36 48 54 mbps
Masque spectrale OFDM :
802.11g
ERP
- Apporte les avantages de la 802.11a à la bande ISM 2.4GHz
802.11n
HT
- Implémentation du MIMO
- A-MPDU / A-MSDU
- Dual band
802.11ac
VHT
802.11ax
HE
Autres standards et amendements
Sources : Wikipedia
- IEEE 802.11-1997: The WLAN standard was originally 1 Mbit/s and 2 Mbit/s, 2.4 GHz RF and infrared (IR) standard (1997), all the others listed below are Amendments to this standard, except for Recommended Practices 802.11F and 802.11T.
- IEEE 802.11a: 54 Mbit/s, 5 GHz standard (1999, shipping products in 2001)
- IEEE 802.11b: 5.5 Mbit/s and 11 Mbit/s, 2.4 GHz standard (1999)
- IEEE 802.11c: Bridge operation procedures; included in the IEEE 802.1D standard (2001)
- IEEE 802.11d: International (country-to-country) roaming extensions (2001)
- IEEE 802.11e: Enhancements: QoS, including packet bursting (2005)
- IEEE 802.11F: Inter-Access Point Protocol (2003) Withdrawn February 2006
- IEEE 802.11g: 54 Mbit/s, 2.4 GHz standard (backwards compatible with b) (2003)
- IEEE 802.11h: Spectrum Managed 802.11a (5 GHz) for European compatibility (2004)
- IEEE 802.11i: Enhanced security (2004)
- IEEE 802.11j: Extensions for Japan (4.9-5.0 GHz) (2004)
- IEEE 802.11-2007: A new release of the standard that includes amendments a, b, d, e, g, h, i, and j. (July 2007)
- IEEE 802.11k: Radio resource measurement enhancements (2008)
- IEEE 802.11n: Higher Throughput WLAN at 2.4 and 5 GHz; 20 and 40 MHz channels; introduces MIMO to Wi-Fi (September 2009)
- IEEE 802.11p: WAVE—Wireless Access for the Vehicular Environment (such as ambulances and passenger cars) (July 2010)
- IEEE 802.11r: Fast BSS transition (FT) (2008)
- IEEE 802.11s: Mesh Networking, Extended Service Set (ESS) (July 2011)
- IEEE 802.11T: Wireless Performance Prediction (WPP)—test methods and metrics Recommendation cancelled
- IEEE 802.11u: Improvements related to HotSpots and 3rd-party authorization of clients, e.g., cellular network offload (February 2011)
- IEEE 802.11v: Wireless network management (February 2011)
- IEEE 802.11w: Protected Management Frames (September 2009)
- IEEE 802.11y: 3650–3700 MHz Operation in the U.S. (2008)
- IEEE 802.11z: Extensions to Direct Link Setup (DLS) (September 2010)
- IEEE 802.11-2012: A new release of the standard that includes amendments k, n, p, r, s, u, v, w, y, and z (March 2012)
- IEEE 802.11aa: Robust streaming of Audio Video Transport Streams (June 2012) - see Stream Reservation Protocol
- IEEE 802.11ac: Very High Throughput WLAN at 5 GHz[e]; wider channels (80 and 160 MHz); Multi-user MIMO (down-link only)[100] (December 2013)
- IEEE 802.11ad: Very High Throughput 60 GHz (December 2012) — see also WiGig
- IEEE 802.11ae: Prioritization of Management Frames (March 2012)
- IEEE 802.11af: TV Whitespace (February 2014)
- IEEE 802.11-2016: A new release of the standard that includes amendments aa, ac, ad, ae, and af (December 2016)
- IEEE 802.11ah: Sub-1 GHz license exempt operation (e.g., sensor network, smart metering) (December 2016)
- IEEE 802.11ai: Fast Initial Link Setup (December 2016)
- IEEE 802.11aj: China Millimeter Wave (February 2018)
- IEEE 802.11ak: Transit Links within Bridged Networks (June 2018)
- IEEE 802.11aq: Pre-association Discovery (July 2018)
- IEEE 802.11-2020: A new release of the standard that includes amendments ah, ai, aj, ak, and aq (December 2020)
- IEEE 802.11ax: High Efficiency WLAN at 2.4, 5 and 6 GHz;[f] introduces OFDMA to Wi-Fi[74] (February 2021)
- IEEE 802.11ay: Enhancements for Ultra High Throughput in and around the 60 GHz Band (March 2021)
- IEEE 802.11az: Next Generation Positioning (March 2023)
- IEEE 802.11ba: Wake Up Radio (March 2021)
- IEEE 802.11bd: Enhancements for Next Generation V2X (see also IEEE 802.11p) (March 2023)