I use as WinTre mobile operator and my reference bts has 4 bands (B1 B20 B3 B7) and it is 180 meters from me. I have a problem with the kit in question when I go to do either a lock on a specific cell or with the lock on a specific band for the primary.
In practice both if I try to do the command to block at the level of a specific primary cell (I use band 3 because it is the one that gives me the best upload performance compared to the other bands):
or at the level of specific primary band:
[admin@MikroTik] > /interface lte at-chat lte1 input="AT*Cell=2,3,,1650,367" output: +CREG: 6,"5f37","03b9db0e",7 $CREG: 6,"5f37","03b9db0e",7,"0b5" +CEREG: 1,"5f37", "03b9db0e",7
after the command is executed, the specific band/cell is regularly set as primary and the secondary band is added (in my case that of a cell in band 7), after a few minutes (about 10/12 minutes, but sometimes even less) the CA is lost, and the internet connection freezes (the session duration counter continues, but you are no longer able to surf):
[admin@MikroTik] > /interface lte at-chat lte1 input="at*cell=1,3,,1650" output: +CGEV: NW PDN DEACT 5
I tried to put both the latest stable of RouterOS (6.48.1) and the beta (7.1beta 3) but the problem remains.
The only way to get it working again is to cancel the commands just given with:
I am attaching more information, after the connection has been restored by the previous command:
[admin@MikroTik] > /interface lte at-chat lte1 input="AT*Cell=0" output: +CGEV: ME DETACH
Do you have any ideas on how to fix this? Thank you
[admin@MikroTik] > /system routerboard print routerboard: yes model: RBLHGGR serial-number: D8C40C521E24 firmware-type: a3700 factory-firmware: 6.47.1 current-firmware: 6.48.1 upgrade-firmware: 6.48.1 [admin@MikroTik] > /system resource print uptime: 43m47s version: 6.48.1 (stable) build-time: Feb/03/2021 10:54:22 factory-software: 6.46.6 free-memory: 226.5MiB total-memory: 256.0MiB cpu: ARMv7 cpu-count: 2 cpu-load: 1% free-hdd-space: 2392.0KiB total-hdd-space: 16.0MiB write-sect-since-reboot: 94 write-sect-total: 8207 bad-blocks: 0% architecture-name: arm64 board-name: RBLHGGR platform: MikroTik [admin@MikroTik] > /interface lte info lte1 once pin-status: ok registration-status: registered functionality: full manufacturer: "MikroTik" model: "R11e-LTE6" revision: R11e-LTE6_V026 current-operator: 22288 lac: 24375 current-cellid: 62511886 enb-id: 244187 sector-id: 14 phy-cellid: 181 access-technology: LTE (CA2) session-uptime: 12m38s imei: imsi: uicc: primary-band: B7@20Mhz earfcn: 3350 phy-cellid: 181 ca-band: B3@20Mhz earfcn: 1650 phy-cellid: 367 rssi: -64dBm rsrp: -95dBm rsrq: -8.5dB sinr: 7dB