c**t
发帖数: 2744 | 1 I'm using a linux device to stream video over Wi-Fi. The problem I had is
that video quality isn't good: delay, choppy. Ran "bsm-ng", the live
bandwidth monitor, I found that the Rx & Tx of wlan0 rapidly changed from
500KB/s to 0KB/s. How to troubleshoot the issue? | L******t
发帖数: 1985 | 2 Expected.
Wireless transmission is sensitive to channel contention, especially at 2.
4GHz. A lot of devices using 2.4G.
【在 c**t 的大作中提到】
: I'm using a linux device to stream video over Wi-Fi. The problem I had is
: that video quality isn't good: delay, choppy. Ran "bsm-ng", the live
: bandwidth monitor, I found that the Rx & Tx of wlan0 rapidly changed from
: 500KB/s to 0KB/s. How to troubleshoot the issue?
| c**t
发帖数: 2744 | 3 If this is expected behavior, any suggestion to improve the video quality
with 2.4G? I have very good bandwidth and signal (as follow), expecting
much better video output. Thanks for any hint!
I do noticed that my device can "see" about 25 APs in range, and 11 of them
are on the same channel to the one I'm connecting to. Is the overlap the
root cause?
wlan0 IEEE 802.11abgn ESSID:"XXXNet"
Mode:Managed Frequency:2.412 GHz Access Point: C0:25:5C:55:C9:29
Bit Rate=72.2 Mb/s Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:on
Link Quality=52/70 Signal level=-58 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0 | L******t
发帖数: 1985 | 4 That's why dual-band wireless routers are popular these days.
If your devices can switch to 5GHz, should be much better. But still don't
expect it to be like wire-line.
them
29
【在 c**t 的大作中提到】
: If this is expected behavior, any suggestion to improve the video quality
: with 2.4G? I have very good bandwidth and signal (as follow), expecting
: much better video output. Thanks for any hint!
: I do noticed that my device can "see" about 25 APs in range, and 11 of them
: are on the same channel to the one I'm connecting to. Is the overlap the
: root cause?
: wlan0 IEEE 802.11abgn ESSID:"XXXNet"
: Mode:Managed Frequency:2.412 GHz Access Point: C0:25:5C:55:C9:29
: Bit Rate=72.2 Mb/s Tx-Power=20 dBm
: Retry long limit:7 RTS thr:off Fragment thr:off
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