nRF7002 wifi throughput measurement

RE: nRF7002 wifi throughput measurement

Håkon Alseth — Thu, 30 Jan 2025 12:00:57 GMT

Hi,

[quote user="jiang.ronghui"]I conducted several more tests to compare the performance differences between Wi-Fi 6 and Wi-Fi 4 in different testing environments.
However, I found that the test results for Wi-Fi 4 and Wi-Fi 6 still did not show significant differences.
Therefore, I would like to ask if the current measurement results in line with the design specifications? If so, what is the significance of using Wi-Fi 6? What are its advantages?[/quote]

The advantages with Wi-Fi 6 is not in speed, but in features like Target Wake Time.

The on-air speed will be more or less equal between Wi-Fi 4 and Wi-Fi 6. This can be seen with the MCS index charts as well:

https://mcsindex.com/

Kind regards,

Håkon

RE: nRF7002 wifi throughput measurement

jiang.ronghui — Thu, 30 Jan 2025 02:33:49 GMT

Sorry for another question.

I conducted several more tests to compare the performance differences between Wi-Fi 6 and Wi-Fi 4 in different testing environments.
However, I found that the test results for Wi-Fi 4 and Wi-Fi 6 still did not show significant differences.
Therefore, I would like to ask if the current measurement results in line with the design specifications? If so, what is the significance of using Wi-Fi 6? What are its advantages?

RE: nRF7002 wifi throughput measurement

Håkon Alseth — Thu, 23 Jan 2025 15:30:25 GMT

Hi,

[quote user="jiang.ronghui"]1. QSPI/SPIM is the communication interface between the nRF7002 and nRF5340, so its throughput is not directly related to the WiFi throughput of the nRF7002 (nRF7002 --> AP), correct?[/quote]

Correct.

[quote user="jiang.ronghui"]2. In a situation where there are no limitations of the nRF7002 DK, what will the WiFi performance be?(the maximum throughput that can be achieved in real-world situations)?[/quote]

As previously mentioned, your results for TCP throughput is higher than the ones we list in the sample itself:

https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/samples/wifi/throughput/README.html#results

It is not likely that you get any higher throughput than what you've already measured.

Kind regards,

Håkon

RE: nRF7002 wifi throughput measurement

jiang.ronghui — Thu, 23 Jan 2025 05:03:59 GMT

Thanks for your reply.
And sorry I just want to confirm again.

1. QSPI/SPIM is the communication interface between the nRF7002 and nRF5340, so its throughput is not directly related to the WiFi throughput of the nRF7002 (nRF7002 --> AP), correct?

2. In a situation where there are no limitations of the nRF7002 DK, what will the WiFi performance be?(the maximum throughput that can be achieved in real-world situations)?

RE: nRF7002 wifi throughput measurement

Håkon Alseth — Wed, 22 Jan 2025 09:52:15 GMT

Hi,

[quote user="jiang.ronghui"] I got it. The throughput is over QSPI/SPIM, but not WiFi, so it can not be compared with my my measurement. Is my understanding correct?[/quote]

Yes, this is correct.

[quote user="jiang.ronghui"] If you mean that my measurement values are very close to the expected values of the nRF7002?[/quote]

Yes, your results are even better than what we list in the examples.

Kind regards,

Håkon

RE: nRF7002 wifi throughput measurement

jiang.ronghui — Wed, 22 Jan 2025 05:33:51 GMT

Thanks for your reply.
> The numbers in the PS has a dependency in terms of what type of throughput is measured. Please see the description text:
I got it. The throughput is over QSPI/SPIM, but not WiFi, so it can not be compared with my my measurement. Is my understanding correct?

> Your TCP TX/RX measured throughput is quite optimal, as shown in the wifi throughput sample documentation which lists a few scenarios:
If you mean that my measurement values are very close to the expected values of the nRF7002?

RE: nRF7002 wifi throughput measurement

Håkon Alseth — Mon, 20 Jan 2025 10:40:30 GMT

Hi,

The numbers in the PS has a dependency in terms of what type of throughput is measured. Please see the description text:

https://docs.nordicsemi.com/bundle/ps_nrf7002/page/chapters/functional/doc/qspi_timing.html

Your TCP TX/RX measured throughput is quite optimal, as shown in the wifi throughput sample documentation which lists a few scenarios:

https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/samples/wifi/throughput/README.html#results

Kind regards,

Håkon