AX6S: mt7622 (mt7615): Low (2.4GHz) tx speed to clients with a single antenna
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- Dominant language
- C
- Stars
- 888
- Forks
- 436
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Description
Good view through one panel wall. Near the router, it's fine. Regardless of openwrt version and settings.
HW for test:
Notebook: Lenovo IdeaPad L340-15API with intel ax210 (2 antenna) - OK (147Mbit/s)
Phones: Samsung Galaxy M14 (1 antenna)
rm -f /tmp/router_iwinfo.log && while true; do iwinfo wl0-ap0 assoclist >> /tmp/router_iwinfo.log && sleep 2; done
'------------------------------------------------------------------------------------'DE:AC:34:5A:6E:55 -58 dBm / -86 dBm (SNR 28) 56 ms ago
RX: 58.5 MBit/s, MCS 6, 20MHz 700895 Pkts.
TX: 43.3 MBit/s, MCS 4, 20MHz 414597 Pkts.
expected throughput: 21.1 MBit/s
DE:AC:34:5A:6E:55 -61 dBm / -89 dBm (SNR 28) 0 ms ago
RX: 39.0 MBit/s, MCS 4, 20MHz 701199 Pkts.
TX: 19.5 MBit/s, MCS 2, 20MHz 415052 Pkts.
expected throughput: 9.1 MBit/s
DE:AC:34:5A:6E:55 -61 dBm / -90 dBm (SNR 29) 0 ms ago
RX: 65.0 MBit/s, MCS 6, 20MHz 702081 Pkts.
TX: 19.5 MBit/s, MCS 2, 20MHz 416162 Pkts.
expected throughput: 8.0 MBit/s
DE:AC:34:5A:6E:55 -61 dBm / -90 dBm (SNR 29) 4 ms ago
RX: 58.5 MBit/s, MCS 6, 20MHz 703014 Pkts.
TX: 21.7 MBit/s, MCS 2, 20MHz 417385 Pkts.
expected throughput: 10.7 MBit/s
DE:AC:34:5A:6E:55 -62 dBm / -89 dBm (SNR 27) 0 ms ago
RX: 65.0 MBit/s, MCS 6, 20MHz 703817 Pkts.
TX: 19.5 MBit/s, MCS 2, 20MHz 418207 Pkts.
expected throughput: 8.7 MBit/s
DE:AC:34:5A:6E:55 -61 dBm / -89 dBm (SNR 28) 8 ms ago
RX: 52.0 MBit/s, MCS 5, 20MHz 704727 Pkts.
TX: 21.7 MBit/s, MCS 2, 20MHz 419201 Pkts.
expected throughput: 10.3 MBit/s
DE:AC:34:5A:6E:55 -62 dBm / -91 dBm (SNR 29) 4 ms ago
RX: 65.0 MBit/s, MCS 6, 20MHz 705729 Pkts.
TX: 19.5 MBit/s, MCS 2, 20MHz 420288 Pkts.
expected throughput: 10.2 MBit/s
DE:AC:34:5A:6E:55 -61 dBm / -91 dBm (SNR 30) 4 ms ago
RX: 52.0 MBit/s, MCS 5, 20MHz 706710 Pkts.
TX: 21.7 MBit/s, MCS 2, 20MHz 421346 Pkts.
expected throughput: 10.4 MBit/s
DE:AC:34:5A:6E:55 -62 dBm / -88 dBm (SNR 26) 12 ms ago
RX: 65.0 MBit/s, MCS 6, 20MHz 708070 Pkts.
TX: 28.9 MBit/s, MCS 3, 20MHz 422446 Pkts.
expected throughput: 17.2 MBit/s
DE:AC:34:5A:6E:55 -61 dBm / -86 dBm (SNR 25) 0 ms ago
RX: 52.0 MBit/s, MCS 5, 20MHz 711556 Pkts.
TX: 21.7 MBit/s, MCS 2, 20MHz 423866 Pkts.
expected throughput: 9.8 MBit/s
DE:AC:34:5A:6E:55 -61 dBm / -87 dBm (SNR 26) 4 ms ago
RX: 39.0 MBit/s, MCS 4, 20MHz 715611 Pkts.
TX: 26.0 MBit/s, MCS 3, 20MHz 425639 Pkts.
expected throughput: 10.8 MBit/s
DE:AC:34:5A:6E:55 -63 dBm / -87 dBm (SNR 24) 0 ms ago
RX: 52.0 MBit/s, MCS 5, 20MHz 719013 Pkts.
TX: 21.7 MBit/s, MCS 2, 20MHz 427204 Pkts.
expected throughput: 9.4 MBit/s
DE:AC:34:5A:6E:55 -61 dBm / -88 dBm (SNR 27) 4 ms ago
RX: 43.3 MBit/s, MCS 4, 20MHz 723015 Pkts.
TX: 26.0 MBit/s, MCS 3, 20MHz 429068 Pkts.
expected throughput: 18.0 MBit/s
DE:AC:34:5A:6E:55 -63 dBm / -75 dBm (SNR 12) 64 ms ago
RX: 19.5 MBit/s, MCS 2, 20MHz 723745 Pkts.
TX: 39.0 MBit/s, MCS 4, 20MHz 429481 Pkts.
expected throughput: 15.1 MBit/s
DE:AC:34:5A:6E:55 -61 dBm / -79 dBm (SNR 18) 8 ms ago
RX: 65.0 MBit/s, MCS 6, 20MHz 726840 Pkts.
TX: 28.9 MBit/s, MCS 3, 20MHz 431061 Pkts.
expected throughput: 14.2 MBit/s
DE:AC:34:5A:6E:55 -60 dBm / -84 dBm (SNR 24) 12 ms ago
RX: 52.0 MBit/s, MCS 5, 20MHz 730600 Pkts.
TX: 26.0 MBit/s, MCS 3, 20MHz 432763 Pkts.
expected throughput: 17.4 MBit/s
DE:AC:34:5A:6E:55 -61 dBm / -87 dBm (SNR 26) 0 ms ago
RX: 58.5 MBit/s, MCS 6, 20MHz 730731 Pkts.
TX: 43.3 MBit/s, MCS 4, 20MHz 432880 Pkts.
expected throughput: 7.4 MBit/s
'------------------------------------------------------------------------------------'
ZTE Blade A5 2020RU (1 antenna) ~ same as samsung.
Honor 5C (2 antenna) - OK (~75Mbit/s)
OpenWrt version:
22.03.0 - 24.10.1
OpenWrt target/subtarget:
mediatek/mt7622
Device:
Xiaomi Redmi Router AX6S
Contributor guide
No contributing guide indexed for this repository
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the report on the Xiaomi Redmi Router AX6S with the single-antenna Samsung Galaxy M14 or ZTE Blade A5 2020RU, using the listed OpenWrt versions. Run the provided iwinfo wl0-ap0 assoclist collection command and compare its rates with the two-antenna clients; the issue names no source file or test, and done would require identifying and resolving the mt7622/mt7615 cause.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c
- Domain
- networking
- Issue type
- Bug
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 20/100