kernel/linux
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-10-31 05:15:34 +00:00
Code Issues Releases Packages Activity

wifi: rtw89: introduce beacon tracking to improve connection stability

Browse source 
In ideal scenario, AP's beacon should transmit at the Target Beacon
Transmission Time (TBTT). However, in practice, beacon may be slightly
off-schedule. This beacon "drift" prevents the firmware from receiving
beacon at the expected TBTT, leading to connection disruptions.

To address this, we introduce beacon tracking mechanism to enhance overall
connection stability. This mechanism executes the following steps in each
cycle (2 seconds): 1) Based on the last 32 received beacons, compute the
minimum TBTT offset to use for the next cycle 2) Using the same 32 beacons,
calculate the drift of each. A histogram is plotted, and outliers are
identified using a boxplot. 3) According to the statistical results from
the second step, a maximum receive window size (beacon timeout) is selected
to cover approximately 80% of the beacons and applied to the next cycle.

Signed-off-by: Kuan-Chung Chen <damon.chen@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20250811123744.15361-2-pkshih@realtek.com
This commit is contained in:
Kuan-Chung Chen 2025-08-11 20:37:37 +08:00 • committed by Ping-Ke Shih
commit d360551f26
7 changed files with 619 additions and 32 deletions
Download patch file Download diff file Expand all files Collapse all files