Unable to connect to LTE network: "LTE link could not be established."

[Arjun Puri]

Fullscreen Noridic91_log.txt Download

2020-02-09T21:25:56.614Z DEBUG modem << ***** Booting Zephyr OS build v2.0.99-ncs1 *****\x0D\x0A
2020-02-09T21:25:56.624Z DEBUG modem << Flash region\x09\x09Domain\x09\x09Permissions\x0D
2020-02-09T21:25:56.627Z DEBUG modem << 00 0x00000 0x08000 \x09Secure\x09\x09rwxl\x0D\x0A
2020-02-09T21:25:56.631Z DEBUG modem << 01 0x08000 0x10000 \x09Secure\x09\x09rwxl\x0D\x0A
2020-02-09T21:25:56.633Z DEBUG modem << 02 0x10000 0x18000 \x09Secure\x09\x09rwxl\x0D\x0A
2020-02-09T21:25:56.635Z DEBUG modem << 03 0x18000 0x20000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.645Z DEBUG modem << 04 0x20000 0x28000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.651Z DEBUG modem << 05 0x28000 0x30000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.656Z DEBUG modem << 06 0x30000 0x38000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.657Z DEBUG modem << 07 0x38000 0x40000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.658Z DEBUG modem << 08 0x40000 0x48000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.670Z DEBUG modem << 09 0x48000 0x50000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.673Z DEBUG modem << 10 0x50000 0x58000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.674Z DEBUG modem << 11 0x58000 0x60000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.675Z DEBUG modem << 12 0x60000 0x68000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.678Z DEBUG modem << 13 0x68000 0x70000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.679Z DEBUG modem << 14 0x70000 0x78000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.681Z DEBUG modem << 15 0x78000 0x80000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.681Z DEBUG modem << 16 0x80000 0x88000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.682Z DEBUG modem << 17 0x88000 0x90000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.683Z DEBUG modem << 18 0x90000 0x98000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.698Z DEBUG modem << 19 0x98000 0xa0000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.700Z DEBUG modem << 20 0xa0000 0xa8000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.711Z DEBUG modem << 21 0xa8000 0xb0000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.713Z DEBUG modem << 22 0xb0000 0xb8000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.714Z DEBUG modem << 23 0xb8000 0xc0000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.716Z DEBUG modem << 24 0xc0000 0xc8000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.727Z DEBUG modem << 25 0xc8000 0xd0000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.728Z DEBUG modem << 26 0xd0000 0xd8000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.730Z DEBUG modem << 27 0xd8000 0xe0000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.731Z DEBUG modem << 28 0xe0000 0xe8000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.732Z DEBUG modem << 29 0xe8000 0xf0000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.735Z DEBUG modem << 30 0xf0000 0xf8000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.737Z DEBUG modem << 31 0xf8000 0x100000 \x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.738Z DEBUG modem << Non-secure callable region 0 placed in flash region 2 with size 32.\x0D\x0A\x0D\x0A
2020-02-09T21:25:56.899Z DEBUG modem << SRAM region\x09\x09Domain\x09\x09Permissions\x0D
2020-02-09T21:25:56.902Z DEBUG modem << 00 0x00000 0x02000\x09Secure\x09\x09rwxl\x0D
2020-02-09T21:25:56.911Z DEBUG modem << 01 0x02000 0x04000\x09Secure\x09\x09rwxl\x0D
2020-02-09T21:25:56.914Z DEBUG modem << 02 0x04000 0x06000\x09Secure\x09\x09rwxl\x0D\x0A
2020-02-09T21:25:56.915Z DEBUG modem << 03 0x06000 0x08000\x09Secure\x09\x09rwxl\x0D\x0A
2020-02-09T21:25:56.916Z DEBUG modem << 04 0x08000 0x0a000\x09Secure\x09\x09rwxl\x0D
2020-02-09T21:25:56.918Z DEBUG modem << 05 0x0a000 0x0c000\x09Secure\x09\x09rwxl\x0D\x0A
2020-02-09T21:25:56.927Z DEBUG modem << 06 0x0c000 0x0e000\x09Secure\x09\x09rwxl\x0D\x0A
2020-02-09T21:25:56.930Z DEBUG modem << 07 0x0e000 0x10000\x09Secure\x09\x09rwxl\x0D\x0A
2020-02-09T21:25:56.932Z DEBUG modem << 08 0x10000 0x12000\x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.933Z DEBUG modem << 09 0x12000 0x14000\x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.942Z DEBUG modem << 10 0x14000 0x16000\x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.944Z DEBUG modem << 11 0x16000 0x18000\x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.946Z DEBUG modem << 12 0x18000 0x1a000\x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.947Z DEBUG modem << 13 0x1a000 0x1c000\x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.948Z DEBUG modem << 14 0x1c000 0x1e000\x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.949Z DEBUG modem << 15 0x1e000 0x20000\x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.951Z DEBUG modem << 16 0x20000 0x22000\x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.954Z DEBUG modem << 17 0x22000 0x24000\x09Non-Secure\x09rwxl\x0D
2020-02-09T21:25:56.957Z DEBUG modem << 18 0x24000 0x26000\x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.960Z DEBUG modem << 19 0x26000 0x28000\x09Non-Secure\x09rwxl\x0D
2020-02-09T21:25:56.963Z DEBUG modem << 20 0x28000 0x2a000\x09Non-Secure\x09rwxl\x0D
2020-02-09T21:25:56.966Z DEBUG modem << 21 0x2a000 0x2c000\x09Non-Secure\x09rwxl\x0D
2020-02-09T21:25:56.970Z DEBUG modem << 22 0x2c000 0x2e000\x09Non-Secure\x09rwxl\x0D
2020-02-09T21:25:56.973Z DEBUG modem << 23 0x2e000 0x30000\x09Non-Secure\x09rwxl\x0D
2020-02-09T21:25:56.976Z DEBUG modem << 24 0x30000 0x32000\x09Non-Secure\x09rwxl\x0D
2020-02-09T21:25:56.979Z DEBUG modem << 25 0x32000 0x34000\x09Non-Secure\x09rwxl\x0D
2020-02-09T21:25:56.982Z DEBUG modem << 26 0x34000 0x36000\x09Non-Secure\x09rwxl\x0D
2020-02-09T21:25:56.985Z DEBUG modem << 27 0x36000 0x38000\x09Non-Secure\x09rwxl\x0D
2020-02-09T21:25:56.989Z DEBUG modem << 28 0x38000 0x3a000\x09Non-Secure\x09rwxl\x0D
2020-02-09T21:25:56.992Z DEBUG modem << 29 0x3a000 0x3c000\x09Non-Secure\x09rwxl\x0D
2020-02-09T21:25:56.995Z DEBUG modem << 30 0x3c000 0x3e000\x09Non-Secure\x09rwxl\x0D\x0A
2020-02-09T21:25:56.998Z DEBUG modem << 31 0x3e000 0x40000\x09Non-Secure\x09rwxl\x0D
2020-02-09T21:25:57.001Z DEBUG modem << Peripheral\x09\x09Domain\x09\x09Status\x0D\x0A
2020-02-09T21:25:57.004Z DEBUG modem << 00 NRF_P0               Non-Secure\x09OK\x0D
2020-02-09T21:25:57.007Z DEBUG modem << 01 NRF_CLOCK            Non-Secure\x09OK\x0D
2020-02-09T21:25:57.011Z DEBUG modem << 02 NRF_RTC1             Non-Secure\x09OK\x0D
2020-02-09T21:25:57.014Z DEBUG modem << 03 NRF_NVMC             Non-Secure\x09OK\x0D
2020-02-09T21:25:57.018Z DEBUG modem << 04 NRF_UARTE1           Non-Secure\x09OK\x0D
2020-02-09T21:25:57.021Z DEBUG modem << 05 NRF_UARTE2           Secure\x09\x09SKIP\x0D
2020-02-09T21:25:57.024Z DEBUG modem << 06 NRF_TWIM2            Non-Secure\x09OK\x0D
2020-02-09T21:25:57.028Z DEBUG modem << 07 NRF_SPIM3            Non-Secure\x09OK\x0D
2020-02-09T21:25:57.031Z DEBUG modem << 08 NRF_TIMER0           Non-Secure\x09OK\x0D
2020-02-09T21:25:57.034Z DEBUG modem << 09 NRF_TIMER1           Non-Secure\x09OK\x0D
2020-02-09T21:25:57.038Z DEBUG modem << 10 NRF_TIMER2           Non-Secure\x09OK\x0D
2020-02-09T21:25:57.041Z DEBUG modem << 11 NRF_SAADC            Non-Secure\x09OK\x0D
2020-02-09T21:25:57.045Z DEBUG modem << 12 NRF_PWM0             Non-Secure\x09OK\x0D
2020-02-09T21:25:57.048Z DEBUG modem << 13 NRF_PWM1             Non-Secure\x09OK\x0D
2020-02-09T21:25:57.051Z DEBUG modem << 14 NRF_PWM2             Non-Secure\x09OK\x0D
2020-02-09T21:25:57.055Z DEBUG modem << 15 NRF_PWM3             Non-Secure\x09OK\x0D
2020-02-09T21:25:57.058Z DEBUG modem << 16 NRF_WDT              Secure\x09\x09SKIP\x0D
2020-02-09T21:25:57.062Z DEBUG modem << 17 NRF_IPC              Non-Secure\x09OK\x0D
2020-02-09T21:25:57.065Z DEBUG modem << 18 NRF_VMC              Non-Secure\x09OK\x0D
2020-02-09T21:25:57.068Z DEBUG modem << 19 NRF_FPU              Non-Secure\x09OK\x0D
2020-02-09T21:25:57.072Z DEBUG modem << 20 NRF_EGU1             Non-Secure\x09OK\x0D
2020-02-09T21:25:57.075Z DEBUG modem << 21 NRF_EGU2             Non-Secure\x09OK\x0D
2020-02-09T21:25:57.079Z DEBUG modem << 22 NRF_DPPIC            Non-Secure\x09OK\x0D
2020-02-09T21:25:57.082Z DEBUG modem << 23 NRF_GPIOTE1          Non-Secure\x09OK\x0D
2020-02-09T21:25:57.085Z DEBUG modem << 24 NRF_REGULATORS       Secure\x09\x09SKIP\x0D
2020-02-09T21:25:57.088Z DEBUG modem << SPM: NS image at 0x18200\x0D
2020-02-09T21:25:57.090Z DEBUG modem << SPM: NS MSP at 0x2002ff40\x0D
2020-02-09T21:25:57.093Z DEBUG modem << SPM: NS reset vector at 0x2c8b5\x0D
2020-02-09T21:25:57.097Z DEBUG modem << SPM: prepare to jump to Non-Secure image.\x0D
2020-02-09T21:25:57.491Z DEBUG modem << ***** Booting Zephyr OS build v2.0[00:00:00.382,171] \x1B[0m<inf> BH1749: BH1749 initialized\x1B[0m\x0D\x0A
2020-02-09T21:25:57.492Z DEBUG modem << .99-ncs1 *****\x0D\x0A
2020-02-09T21:25:57.496Z DEBUG modem << Asset tracker started\x0D\x0A
2020-02-09T21:25:57.511Z DEBUG modem << [00:00:00.394,012] \x1B[0m<dbg> nrf_cloud_transport.nct_client_id_get: client_id = nrf-352656100985996\x1B[0m\x0D\x0A
2020-02-09T21:25:57.528Z DEBUG modem << [00:00:00.403,228] \x1B[0m<dbg> nrf_cloud_transport.nct_topics_populate: shadow_base_topic: $aws/things/nrf-352656100985996/shadow\x1B[0m\x0D
2020-02-09T21:25:57.530Z DEBUG modem << [00:00:00.414,886] \x1B[0m<dbg> nrf_cloud_transport.nct_topics_populate: accepted_topic: nrf-352656100985996/shadow/get/accepted\x1B[0m\x0D\x0A
2020-02-09T21:25:57.547Z DEBUG modem << [00:00:00.426,391] \x1B[0m<dbg> nrf_cloud_transport.nct_topics_populate: rejected_topic: $aws/things/nrf-352656100985996/shadow/get/rejected\x1B[0m\x0D\x0A
2020-02-09T21:25:57.563Z DEBUG modem << [00:00:00.438,934] \x1B[0m<dbg> nrf_cloud_transport.nct_topics_populate: update_delta_topic: $aws/things/nrf-352656100985996/shadow/update/delta\x1B[0m\x0D
2020-02-09T21:25:57.567Z DEBUG modem << [00:00:00.451,812] \x1B[0m<dbg> nrf_cloud_transport.nct_topics_populate: update_topic: $aws/things/nrf-352656100985996/shadow/update\x1B[0m\x0D\x0A
2020-02-09T21:25:57.583Z DEBUG modem << [00:00:00.463,653] \x1B[0m<dbg> nrf_cloud_transport.nct_topics_populate: shadow_get_topic: $aws/things/nrf-352656100985996/shadow/get\x1B[0m\x0D\x0A
2020-02-09T21:25:57.586Z DEBUG modem << Connecting to LTE network. This may take several minutes.\x0D\x0A
2020-02-09T21:25:57.595Z DEBUG modem << [00:00:00.483,032] \x1B[0m<dbg> lte_lc.w_lte_lc_connect: Network mode: AT%XSYSTEMMODE=1,0,1,0\x1B[0m\x0D
2020-02-09T21:26:43.895Z DEBUG modem << +CEREG: 2,"FFFE","FFFFFFFF",7,0,0,"11100000","11100000"\x0D\x0A
2020-02-09T21:26:43.938Z DEBUG modem << [00:00:46.792,083] \x1B[0m<dbg> lte_lc.parse_nw_reg_status: Network registration status: 2\x1B[0m\x0D\x0A
2020-02-09T21:35:57.616Z DEBUG modem << [00:10:00.524,169] \x1B[0m<inf> lte_lc: Network connection attempt timed out\x1B[0m\x0D
2020-02-09T21:35:57.634Z DEBUG modem << +CEREG: 0,"FFFE","FFFFFFFF",7,0,0,"11100000","11100000"\x0D
2020-02-09T21:35:57.648Z DEBUG modem << [00:10:00.538,970] \x1B[0m<dbg> lte_lc.parse_nw_reg_status: Network registration status: 0\x1B[0m\x0D\x0A
2020-02-09T21:35:57.649Z DEBUG modem << [00:10:00.547,393] \x1B[0m<inf> lte_lc: Using fallback network mode\x1B[0m\x0D\x0A
2020-02-09T21:35:57.650Z DEBUG modem << [00:10:00.553,527] \x1B[0m<dbg> lte_lc.w_lte_lc_connect: Network mode: AT%XSYSTEMMODE=0,1,1,0\x1B[0m\x0D\x0A
2020-02-09T21:37:05.825Z DEBUG modem << +CEREG: 2,"33F0","001CFC0B",9,0,0,"11100000","11100000"\x0D
2020-02-09T21:37:05.860Z DEBUG modem << [00:11:08.740,753] \x1B[0m<dbg> lte_lc.parse_nw_reg_status: Network registration status: 2\x1B[0m\x0D\x0A
2020-02-09T21:37:09.297Z DEBUG modem << +CEREG: 2,"33F0","001CFC0B",9,0,13,"11100000","11100000"\x0D
2020-02-09T21:37:09.305Z DEBUG modem << [00:11:12.213,867] \x1B[0m<dbg> lte_lc.parse_nw_reg_status: Network registration status: 2\x1B[0m\x0D\x0A
2020-02-09T21:38:08.555Z DEBUG modem << +CEREG: 2,"FFFE","FFFFFFFF",9,0,13,"11100000","11100000"\x0D
2020-02-09T21:38:08.565Z DEBUG modem << [00:12:11.474,029] \x1B[0m<dbg> lte_lc.parse_nw_reg_status: Network registration status: 2\x1B[0m\x0D\x0A
2020-02-09T21:45:57.671Z DEBUG modem << [00:20:00.596,374] \x1B[0m<inf> lte_lc: Network connection attempt timed out\x1B[0m\x0D
2020-02-09T21:45:57.674Z DEBUG modem << LTE link could not be established.\x0D

Hi There, 

ISSUE:

New Nordic Thingy:91 will not connect to the LTE network, it is giving "LTE link could not be established." and then rebooting.

Things I have tried:

1. Updating the Firmware. - Latest precompiled firmware from the site. :"thingy91_fw_2019-11-29_d3130d77". 

2. Testing Different Sims. Ebasis, EE and Vodafone. I usually get 4G reception where I am testing the device, and am getting it on the same EE sim on a phone. 

3. Updating the certificates (did this before I realised that it was not even connecting to the LTE network.) This was successful as far as I can tell.

4.Tested different Asset tracker Packages (NB-IoT Package vs the LTE-M Package). I realised on the coverage map that UK only has limited LTE-M so I switched to the NB-IoT package, and I know Vodafone have a lot of NB-IoT coverage so I used the NB-IoT sim but no luck. 

In the LTE Link monitor I have the following status' in the top right: UART: Flow-control Off; Modem: Off; UICC: Off; LTE: Not registered/searching; PDN: disabled. I tried pushing AT+CFUN=1 to see if that would turn the modem green but again no luck. 

DEVELOPMENT SETUP:

# nRFConnect System Report - 2020-02-09T23-33-14.603Z

- System: HP HP EliteBook Folio 1040 G3
- BIOS: HP HPQOEM - 0
- CPU: 1 x Intel Core i5-6300U 2.40 GHz 4 cores (2 physical)
- Memory: 3.3 GB free of 7.8 GB total
- Filesystem: C: (NTFS) 116.7 GB 91.2% used

- OS: Microsoft Windows 10 Enterprise (10.0.17134) win32 ia32

- Versions
- kernel: 10.0.17134
- git: 2.25.0.windows.1
- node: 12.0.0
- python: 3.7.4
- python3:

Latest tools and packages from the Nordic website. I am based in the UK, working in London and Surrey. 

ATTACHMENTS:

I have attached a log from one loop of reboot to failure. Please let me know if you want any other logs. 

My suspicion is that I do not have LTE-M coverage and that none of the sims I have are configured for NB-IoT, however at the moment I have no way of confirming this. 

Any help, guidance or information would be appreciated in getting the asset tracker package up and running. 

Kindest Regards,

Arjun Puri

[Martin Lesund]

Hi Arjun,

In your area, it seems like it would be NB-IoT support with the following carrier. (iBasis SIM is not supported for the NB-IoT network in your area yet)
Please make sure that the SIM card you have actually grants you access to the NB-IoT network. (Can be confirmed with your carrier)

I would recommend that you first try to update the modem firmware version to v1.1.1.
[Open the Programmer app in nRF Connect for Desktop and select "Update modem" and select the modem firmware binary.]


Then I would like you to try to flash the AT Client sample: thingy91_at_client_2019-11-29_d3130d77.hex

Then open LTE Link Monitor, de-select the "Auto device/port filter" at the settings tab and "Select device" the correct COM port.

Then try to send the AT command: AT+CFUN=4

then AT%XSYSTEMMODE=0,1,0,0

AT%XEPCO=0

AT+CFUN=1
AT+CFUN?  (when sending this command, make sure you have "checked" the "Automatic requests" so the LTE monitor application can run through the AT commands to update the parameters.)

Send the output log if there are any issue with connecting.

[Arjun Puri]

Hi Martin, 

I have posted here with where I am stuck currently: https://devzone.nordicsemi.com/f/nordic-q-a/58361/ip-address-of-nordic-cloud

Once I have the IP address of the nordic cloud I will be able to get the NB-IoT sims. Thanks if you can help!

Kindest Regards,

Arjun