nRF9160 modem couldn't enter eDRX

RE: nRF9160 modem couldn't enter eDRX

zwang@2020 — Wed, 17 Jun 2020 06:38:27 GMT

Hi Didrik,

Thank you for your support, eDRX take effect after update network simulator configuration.

RE: nRF9160 modem couldn't enter eDRX

Didrik Rokhaug — Mon, 18 May 2020 13:32:16 GMT

To me, it looks like the UE is given eDRX during the attach. However, when the UE is given an RRC connection release, it is given release cause 7:

Cause #7 – EPS services not allowed

This EMM cause is sent to the UE when it is not allowed to operate EPS services.

Had this been a "live network" I would recommend you check with your operator that eDRX is supported in your subscription. Are you certain that the Amarisoft and SIM card are configured correctly?

We have a blog post that explains how to configure a Rhode & Schwarz CMW500 for use with the nRF9160 that you might find helpful: https://devzone.nordicsemi.com/nordic/cellular-iot-guides/b/hardware-design/posts/using-nrf9160-against-r-s-cmw500-or-cmw290-in-signalling-callbox-mode

RE: nRF9160 modem couldn't enter eDRX

zwang@2020 — Mon, 18 May 2020 05:40:53 GMT

Any clue be found from the trace? We are waiting for your reply.

RE: nRF9160 modem couldn't enter eDRX

zwang@2020 — Fri, 15 May 2020 05:54:52 GMT

Hi Didrik,

Trace has attached, please check the cause DUT unable to enter eDRX.

devzone.nordicsemi.com/.../pc_2D00_nrfconnect_2D00_tracecollector.7z

Br,zhen

RE: nRF9160 modem couldn't enter eDRX

zwang@2020 — Fri, 15 May 2020 01:48:21 GMT

Hi Didrik,

Thank you for you quick response.

We are using Amarisoft 100 as an LTE simulator.

And the USIM card is a test card, not the commercial card, we programmed it custom。

We will release another firmware to enable trace and then will upload here.

Br,zhen

RE: nRF9160 modem couldn't enter eDRX

Didrik Rokhaug — Thu, 14 May 2020 11:48:36 GMT

Hi.

What SIM cards were used in your tests, and what networks did you connect to?

Could you take a modem trace when using Cat-M1?

Best regards,

Didrik