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VREMSoftwareDevelopment / WiFiAnalyzer

Android application to analyze WiFi signals.
https://vremsoftwaredevelopment.github.io/WiFiAnalyzer/
GNU General Public License v3.0
3.24k stars 606 forks source link

160Mhz channels are detected as 80Mhz only #301

Closed tsg2k2 closed 4 years ago

tsg2k2 commented 4 years ago

Describe the bug

UI displays 160Mhz channel as 80Mhz, both in the AP list and on the graph.

To Reproduce

  1. Have a router running 160Mhz channel.
  2. Open WifiAnalyzer and switch to Access Point view. Observe that router's SSID from #1 is displayed having 80Mhz width.

Expected behavior 160Mhz width should be displayed (and properly reflected on the channel graph too)

Versions

Android 10 on OnePlus7 Pro 5G WifiAnalizer 2.1.2 - 52GS(10-29)

Additional context router's own status:

phy#1
        Interface wlan1
                ifindex 7
                wdev 0x100000001
                addr ...
                ssid ...
                type AP
                channel 100 (5500 MHz), width: 160 MHz, center1: 5570 MHz
                txpower 30.00 dBm

Intel AX200 (2x2 160Mhz wifi 6 card)

image

VREMSoftwareDevelopment commented 4 years ago

@tsg2k2 Please provide screenshot from the application: access points screen with full details per access point

tsg2k2 commented 4 years ago

Here it is

On Wed, Jul 15, 2020, 4:30 PM VREM Software Development < notifications@github.com> wrote:

@tsg2k2 https://github.com/tsg2k2 Please provide screenshot from the application: access points screen with full details per access point

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/VREMSoftwareDevelopment/WiFiAnalyzer/issues/301#issuecomment-658992898, or unsubscribe https://github.com/notifications/unsubscribe-auth/AJ4IXSPWXMGJG7YRMBVIVB3R3YGWFANCNFSM4OZ5SBIA .

VREMSoftwareDevelopment commented 4 years ago

@tsg2k2 ???

tsg2k2 commented 4 years ago

In my previous email i have attached a screenshot of 160mhz channel (SSID tsg51) which is shown as 80mhz only, as per your request.

On Wed, Jul 15, 2020, 5:12 PM VREM Software Development < notifications@github.com> wrote:

@tsg2k2 https://github.com/tsg2k2 ???

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/VREMSoftwareDevelopment/WiFiAnalyzer/issues/301#issuecomment-659013098, or unsubscribe https://github.com/notifications/unsubscribe-auth/AJ4IXSM3NOF6TGJSH5UI473R3YLUPANCNFSM4OZ5SBIA .

VREMSoftwareDevelopment commented 4 years ago

There are no attached screenshot in your previous comments/emails

tsg2k2 commented 4 years ago

Attempt #2

On Thu, Jul 16, 2020, 9:05 AM VREM Software Development < notifications@github.com> wrote:

There are no attached screenshot in your previous comments/emails

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/VREMSoftwareDevelopment/WiFiAnalyzer/issues/301#issuecomment-659397634, or unsubscribe https://github.com/notifications/unsubscribe-auth/AJ4IXSNTFHALT65P4UDEFRTR333JTANCNFSM4OZ5SBIA .

VREMSoftwareDevelopment commented 4 years ago

Still no attached screenshot

tsg2k2 commented 4 years ago

Apparently github email handler strips images. Here is the one attached via web BlurImage_15-7-2020-4-42-16

VREMSoftwareDevelopment commented 4 years ago

Application is relying on the Access Point information provided by Android API. https://developer.android.com/reference/kotlin/android/net/wifi/ScanResult

Based on the information you have provided, there are two possibilities:

Please connect to your router and check what is displayed as connection information in the router when android device is connected (80Mhz or 160Mhz width). This would help to determine whether it is an Android API or Android device issue

tsg2k2 commented 4 years ago

The phone doesn't support 160mhz, it connects to this router at 2x2@80mhz (866mbit phy rate).

I was under assumption that channel width is advertised by AP and this info is available for device irregardless of it's ability to utilize full width.

Seems like it's happening via beacon packets

https://www.engeniustech.com/wi-fi-beacon-frames-simplified/

This leaves only one possibility, it seems...

On Sat, Jul 18, 2020, 9:24 AM VREM Software Development < notifications@github.com> wrote:

Application is relying on the Access Point information provided by Android API. https://developer.android.com/reference/kotlin/android/net/wifi/ScanResult

Based on the information you have provided, there are two possibilities:

  • Android API returns incorrect channel width
  • Android Device does not support 160Mhz width

Please connect to your router and check what is displayed as connection information in the router when android device is connected (80Mhz or 160Mhz width). This would help to determine whether it is an Android API or Android device issue

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/VREMSoftwareDevelopment/WiFiAnalyzer/issues/301#issuecomment-660482574, or unsubscribe https://github.com/notifications/unsubscribe-auth/AJ4IXSNW3DIHS2VLBW2P5BDR4GPALANCNFSM4OZ5SBIA .