WiFi operates on 802.11a standard, but both the adapter and router support 802.11ac technology.
WiFi operates on 802.11a standard, but both the adapter and router support 802.11ac technology.
Je ai essayé de résoudre le ralentissement de ma connexion WiFi et j'ai identifié que mon adaptateur tombe sur 802.11a alors que je suis connecté à un réseau 802.11ac (comme je le comprends). Je fonctionne sur un PC Windows 10 x64 avec l'adaptateur ASUS PCE-AX58BT, les pilotes sont à la dernière version téléchargée depuis le site ASUS. J'aurais besoin de conseils sur la raison et la méthode pour corriger cela. Voici les informations que je peux partager (désolé si mon système est en français, n'hésitez pas à demander une traduction). Je confirme que mon routeur utilise 802.11ac sur le SSID auquel je suis connecté (signal à 80 %, ce qui semble normal) : wlan netsh show networks mode=bssid SSID 7 : SFR-2498_5GHz Type de réseau : Infrastructure Authentification : WPA2 - Personnel Chiffrement : CCMP BSSID 1 : <signal> Signal : 80% Type de radio : 802.11ac Canal : 36 Vitesse de base (Mbits/s) : 6 12 24 Autres vitesses (Mbits/s) : 9 18 36 48 54 Je peux aussi vérifier que mon pilote WiFi est compatible avec 802.11ac : netsh wlan show drivers Nom de l'interface : Wi-Fi 2 Pilote : Intel® Wi-Fi 6 AX200 160MHz Fournisseur : Intel Corporation Fournisseur : Intel Date : 19/08/2021 Version : 22.80.0.9 Fichier INF : oem89.inf Type : pilote Wi-Fi natif Types de radios prises en charge : 802.11b 802.11g 802.11n 802.11a 802.11ac Pourtant, ma connexion WiFi fonctionne toujours avec 802.11a à 54/48 Mbits/s. Je peux aussi consulter les paramètres de mon adaptateur via netsh wlan show interfaces.
How close is the computer to the wireless router or AP? Are there any walls, floors, or other barriers between them? What brand and model is the wireless router/AP? Which WiFi settings are active on it? Perform a wireless scan with tools like WiFi Analyzer or WiFiman to evaluate usage of 2.4GHz and 5GHz bands. Capture screenshots of the channel analysis results.
How much distance separates the computer from the wireless router/AP? Are there any obstacles like walls or floors affecting the signal? Roughly 15 meters with three walls in between. I can't relocate the router because the fiber connector is inside the flat, and moving the PC would be inconvenient since it's shared with a roommate. There are no visible obstructions. The router/modem comes from my ISP, "Red by SFR modem THD," and it connects via FTTLA. I don’t have much technical detail beyond that info. Here’s the router model: [insert model if known].
What settings are configured on the wireless router/AP? I have two distinct SSIDs for both 2.4GHz and 5GHz bands, and I connect to the 5GHz band on my PC. Also, the multimedia server is active while the guest network remains disabled. Please let me know if I missed anything.
Would you like me to help interpret the WiFi analyzer results or suggest optimal channel settings?
You've observed your Android device is using a faster 5GHz network with a reported 175Mbps speed, indicating it's likely operating on a protocol above standard 802.11a.
Obstacles are making it hard for WiFi to reach you. The presence of concrete, brick, or steel in walls further reduces performance. Your adapter tries to adjust to the signal strength it detects. This makes sense. Other easy fixes include relocating desktops closer to the floor, clearing any objects near the antennae, or moving the router/AP to a higher position. For security, use WPA2-PSK (AES) on both antennas—it works faster. Disable DFS channels if your adapter struggles with them. Some devices don’t handle DFS well, which is normal. What your phone reports reflects the AP’s settings at 80MHz. Good news—no overlapping signals are present at that frequency. Still, the signal strength is weak (-80 to -70dBm), likely due to many walls blocking it. When using 2.4GHz, what speeds do you get? How much data does your ISP charge you for? The connection speed depends on several factors. Your phone may have stronger antennas or support more simultaneous streams than your computer’s adapter can handle. The AX200 is a compact 2x2 unit—essentially an Intel AX200 wireless card. Update your Windows drivers, remove the old ones, and install the latest version. Don’t forget to restart after updating.
I reviewed your guidance and began implementing changes one at a time, starting with the simplest: switching to WPA2-PSK (AES) and disabling DFS. It seems I was fortunate—now my network shows an 802.11ac connection in the speed test results. The numbers look solid: 393.5 Mbps down and 51.5 Mbps up on the 5GHz band, 56/54 on the 2.4GHz band (still labeled as 802.11n). My ISP claims a 400/60 Mb/s connection, which suggests the issue has shifted from technical settings to my payment plan. I can’t revert to earlier configurations for testing, but Steam downloads used to be limited to 3.5MB/s and eventually reached up to 35MB/s. I’ll update the drivers while I’m here (I didn’t realize my ASUS was powered by an Intel chip). For now, this configuration meets my needs. Thanks a lot for your helpful tips and clear explanations—have a great weekend, @Falcon1986! Side note: the router setup page via 192.168.0.1 appears to be nonfunctional these days. I was curious to revert DFS to identify which setting caused the problem, but it seems like a mystery at this point.
Hope this helps! Adjusting the WiFi configuration shouldn't interfere with accessing the router's admin panel. Check out the DFS guide. WPA serves as a wireless encryption protocol. Try these steps: reset the network/SSID in Windows and reconnect using identical login details. This refreshes the connection profile Windows maintains with the new settings. Make sure to repeat this for every device linked to the access point after you've updated the settings. Restart the router. Updating drivers was optional unless other solutions failed. I wouldn't focus on updates if the new settings already meet your speed expectations.