QCA988X firmware version and speed

KAVITA MATHUR kavitam at cdot.in
Sun Jan 28 21:08:22 PST 2018


I also have same observations. Rx rate is not getting updated in iw station dump command
with firmware version Throughput is also degraded by 30Mbps with this
version.My measure throughput was 180Mbps with firmware-5.bin_25_2.1 for HT40 mode(2x2).

Sometimes I can see 1 SS in station dump while my radio is 2x2.Is there any speed
difference for the FW version

Please see my AP configuration below:

root at CDOT-BBWT:/cdot/bin# iw wlan0 info
Interface wlan0
        ifindex 16
        wdev 0x3
        addr 04:f0:21:1d:77:66
        ssid CDOT-WIFI-TS
        type AP
        wiphy 0
        channel 149 (5745 MHz), width: 40 MHz, center1: 5755 MHz
        txpower 20.00 dBm
root at CDOT-BBWT:/cdot/bin# 
root at CDOT-BBWT:/cdot/bin# 
root at CDOT-BBWT:/cdot/bin# iw wlan0 station dump
Station 88:78:73:d2:ea:92 (on wlan0)
        inactive time:  12380 ms
        rx bytes:       708
        rx packets:     12
        tx bytes:       352
        tx packets:     4
        tx retries:     0
        tx failed:      1
        signal:         -40 [-46, -45] dBm
        signal avg:     -41 [-46, -44] dBm
        tx bitrate:     6.0 MBit/s
        rx bitrate:     6.0 MBit/s
        authorized:     yes
        authenticated:  yes
        preamble:       long
        WMM/WME:        yes
        MFP:            no
        TDLS peer:      no
        connected time: 43 seconds

Thanks & Regards,

On Fri, 26 Jan 2018 22:58:43 -0500, Nikolay Martynov wrote
> Hi.
>   I've got some observation about firmware version and speed that I
> would like to share.
>   I have tp-link archer c5 with 'ath10k_pci 0000:01:00.0: qca988x
> hw2.0 target 0x4100016c chip_id 0x043202ff sub 0000:0000' running
> Openwrt.
>   When I use firmware version I get modulation speeds
> about twice as large as with other firmware versions. I've also tried
> and firmware-5.bin_10.2.4-1.0-00033 and one that was
> Openwrt/Lede stock before that - all show performance noticeably worse
> than
>   In fact if my laptop stands on my desk (some distance away from AP)
> and I use I get stable 2 spacial stream reception, if I
> use other versions mentioned above I usually get one 1 special stream
> as shown by 'iw' command on a client.
>   I'm not sure if that observation if helpful or not, but since it
> looks like newer FW versions have worse performance I thought I should
> share it.
>   Please let me know if I can provide any more information.
> -- 
> Martynov Nikolay.
> Email: mar.kolya at gmail.com
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Thanks & Regards,
कविता माथुर Kavita Mathur 
वरिष्ठ अनुसंधान अभियंता  Senior Research Engineer 
सी-डॉट                      C-DOT
इलैक्ट्रॉनिक्स सिटी फेज़ I         Electronics City Phase I
होसूर रोड, बेंगलूरु               Hosur Road, Bengaluru – 560100
फोन  Ph 080-28529896
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