DRX seems not working sometimes

RE: DRX seems not working sometimes

Didrik Rokhaug — Thu, 16 Nov 2023 10:28:21 GMT

No, the application doesn't know if it has cDRX or not.

RE: DRX seems not working sometimes

Tim Chao — Thu, 16 Nov 2023 01:51:35 GMT

Got it, thanks.

One more question, is there a way to know if cDRX is works or not from system?

For example, if customer complain that the power drains too fast, if I can log something for notice that there may be this issue? Or even, the network does not support cDRX.

Best regards,

Tim

RE: DRX seems not working sometimes

Didrik Rokhaug — Wed, 15 Nov 2023 12:59:30 GMT

Hi, and sorry for the late reply.

As the cDRX is controlled by the network, it is a bit difficult to say what happens.

In the log, the network first configures cDRX. However, there is a handover, which clears the cDRX parameters. After the handover, the device does not receive new cDRX parameters from the new cell. The log shows that the signal conditions are quite poor, so it might be that the network tries to configure cDRX, but that the packet is lost.

Regardless of if this is a network issue or a signal condition issue, there isn't really anything that can be done from the device side. However, you can try to test this in better signal conditions, to see if the same happens then.

Best regards,

Didrik

RE: DRX seems not working sometimes

Tim Chao — Wed, 15 Nov 2023 02:58:11 GMT

Hi,

Is there any update on the analysis results?

Cause the issue happne on same operator (even on the same cell) and impact on product battery life.
I really want to know if there is anything I can do to optimize it.

Thanks.

Tim Chao

RE: DRX seems not working sometimes

Didrik Rokhaug — Wed, 08 Nov 2023 15:16:03 GMT

Hi,

cDRX is controlled by the network, so this is probably due to some network (possible mis)configuration.

However, I've asked our modem team to take a look at your trace to see if they find anything interesting.

Best regards,

Didrik