[RW612] Dual Antenna Throughput

[hclee]

Hello,

I’m currently developing with the RW612 and working on a feature where Wi-Fi and BLE operate simultaneously.
The system uses a dual-antenna configuration, with separate antennas for Wi-Fi and BLE.

Below are the SDK details currently used in the MCUXpresso IDE:

* SDK Name : SDK_2.x_FRDM-RW612
* SDK Version : 24.12.00
* Manifest Version : 3.15.0

During testing, I observed that when connecting to Wi-Fi in the 2.4GHz band and running BLE operations concurrently, the Wi-Fi throughput drops significantly.
On the other hand, the 5GHz band operates stably without any noticeable degradation.
However, since 2.4GHz operation is also required in our use case, this issue needs to be addressed.

While researching, I came across the document AN14121: Coexistence Overview for RW61x. I’d like to ask: in a dual-antenna setup like ours, are there any specific PTA (Priority Traffic Arbiter) settings that need to be configured differently?

Additionally, the Wi-Fi and BLE firmware provided in the FRDM-RW612 SDK—namely rw61x_sb_wifi_a2.bin and rw61x_sb_ble_a2.bin—appear to be designed for single-antenna configurations. Is there a separate firmware version available for dual-antenna setups? If so, would it be possible to obtain it?

Thanks.

[shaun_wu]

Hello @hclee 

FRDM board only support 1 antenna configuration, you are using custom board?

While researching, I came across the document AN14121: Coexistence Overview for RW61x. I’d like to ask: in a dual-antenna setup like ours, are there any specific PTA (Priority Traffic Arbiter) settings that need to be configured differently?

--> Can't coexistence mechanism is use to avoid Wi-Fi 2.4G and BT interrupt.

Additionally, the Wi-Fi and BLE firmware provided in the FRDM-RW612 SDK—namely rw61x_sb_wifi_a2.bin and rw61x_sb_ble_a2.bin—appear to be designed for single-antenna configurations. Is there a separate firmware version available for dual-antenna setups? If so, would it be possible to obtain it?

--> frdm board hardware not support dule antenna. You could refer evk design, we provide dule antenna design and configuration. https://www.nxp.com/webapp/Download?colCode=RD-RW61X-BGA-IPA-2A-V4&appType=license

Best Regards

Shaun

Best Regards

Shaun

[hclee]

Hi, @shaun_wu 

We are currently using a custom board configured with dual antennas.
Our application involves streaming data from a server via Wi-Fi while simultaneously transmitting data over BLE.

During testing, we observed that when using the 2.4GHz Wi-Fi band for downloading and BLE for transmitting, the Wi-Fi throughput degrades noticeably.
Given that our board uses a dual-antenna setup, we would like to ask whether there are any specific configuration steps required to properly enable the coexistence mechanism in this scenario.

I tried accessing the link you provided, but I received the message:
"Your userId does not have sufficient privilege to proceed with download."
It seems I don’t have the necessary permissions to view or download the content.

Best Regards

hclee

[shaun_wu]

Hello @hclee 

coexistence is default enabled, no need to configure. if bt and 2.4G wifi operate at same time, throughput will reduce due to avoid 2.4G Wi-Fi and BT interrupt. 

But we provide demo about coex, you may reference in SDK: \middleware\wireless\coex\build_coex.sh 

build this shell then flash to board use J-Link:

Best Regards

Shaun

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