Difference between revisions of "Mobile signal strength check"
Martin Cupak (talk | contribs) m (add link to upper level page) |
Martin Cupak (talk | contribs) (add more examples of signak quality check - 4G modem, qmicli) |
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Login to the camera system locally or remotely, in text console run the following commands. | Login to the camera system locally or remotely, in text console run the following commands. | ||
| − | Verbose | + | Verbose signal reception print - 4G/LTE connection, good signal quality: |
root@XXXXXX:~# '''qmicli -d /dev/cdc-wdm1 --nas-get-signal-strength''' | root@XXXXXX:~# '''qmicli -d /dev/cdc-wdm1 --nas-get-signal-strength''' | ||
| Line 27: | Line 27: | ||
Network 'lte': '-104 dBm' | Network 'lte': '-104 dBm' | ||
| − | Brief | + | Brief signal reception print - 4G/LTE connection, good signal quality: |
root@XXXXXX:~# '''qmicli -d /dev/cdc-wdm1 --nas-get-signal-info''' | root@XXXXXX:~# '''qmicli -d /dev/cdc-wdm1 --nas-get-signal-info''' | ||
| Line 36: | Line 36: | ||
RSRP: '-104 dBm' | RSRP: '-104 dBm' | ||
SNR: '-4.4 dB' | SNR: '-4.4 dB' | ||
| + | |||
| + | Brief signal reception print - 4G/LTE connection, excellent signal quality: | ||
| + | |||
| + | root@XXXXXX:~# '''qmicli -d /dev/cdc-wdm1 --nas-get-signal-info''' | ||
| + | [/dev/cdc-wdm1] Successfully got signal info | ||
| + | LTE: | ||
| + | RSSI: '-62 dBm' | ||
| + | RSRQ: '-7 dB' | ||
| + | RSRP: '-90 dBm' | ||
| + | SNR: '23.8 dB' | ||
| + | |||
| + | Brief signal reception print - 3G/WCDMA connection, marginal signal strength, but still good signal quality thanks to low noise/interference; typical for remote areas with low population: | ||
| + | |||
| + | root@DFNEXT043:~# '''qmicli -d /dev/cdc-wdm1 --nas-get-signal-info''' | ||
| + | [/dev/cdc-wdm1] Successfully got signal info | ||
| + | WCDMA: | ||
| + | RSSI: '-103 dBm' | ||
| + | '''ECIO: '-6.5 dBm'''' | ||
| + | |||
| + | Verbose signal reception print - 3G/WCDMA connection, marginal signal strength, but still good signal quality thanks to low noise/interference; typical for remote areas with low population: | ||
| + | |||
| + | root@DFNEXT043:~# '''qmicli -d /dev/cdc-wdm1 --nas-get-signal-strength''' | ||
| + | [/dev/cdc-wdm1] Successfully got signal strength | ||
| + | Current: | ||
| + | Network 'umts': '-103 dBm' | ||
| + | RSSI: | ||
| + | Network 'umts': '-103 dBm' | ||
| + | '''ECIO:''' | ||
| + | Network 'umts': ''''-7.5 dBm'''' | ||
| + | IO: '-106 dBm' | ||
| + | SINR: (8) '9.0 dB' | ||
''Note: if device /dev/cdc-wdm1 was not working, try substitute 1 with 0 or 2. List devices available in your system with 'ls -l /dev/cdc-wdm*'. | ''Note: if device /dev/cdc-wdm1 was not working, try substitute 1 with 0 or 2. List devices available in your system with 'ls -l /dev/cdc-wdm*'. | ||
Revision as of 07:49, 5 May 2021
This page provides detailed information how to check mobile signal reception quality from command line. For general information on mobile networks and modems, please go to Mobile network - 3G/4G modem installation and configuration.
This link shows a good description of what signal quality is needed: [1]
4G (MC74xx) modem modules
Login to the camera system locally or remotely, in text console run the following commands.
Verbose signal reception print - 4G/LTE connection, good signal quality:
root@XXXXXX:~# qmicli -d /dev/cdc-wdm1 --nas-get-signal-strength
[/dev/cdc-wdm1] Successfully got signal strength
Current:
Network 'lte': '-68 dBm'
RSSI:
Network 'lte': '-68 dBm'
ECIO:
Network 'lte': '-2.5 dBm'
IO: '-106 dBm'
SINR: (8) '9.0 dB'
RSRQ:
Network 'lte': '-12 dB'
SNR:
Network 'lte': '1.0 dB'
RSRP:
Network 'lte': '-104 dBm'
Brief signal reception print - 4G/LTE connection, good signal quality:
root@XXXXXX:~# qmicli -d /dev/cdc-wdm1 --nas-get-signal-info
[/dev/cdc-wdm1] Successfully got signal info
LTE:
RSSI: '-68 dBm'
RSRQ: '-12 dB'
RSRP: '-104 dBm'
SNR: '-4.4 dB'
Brief signal reception print - 4G/LTE connection, excellent signal quality:
root@XXXXXX:~# qmicli -d /dev/cdc-wdm1 --nas-get-signal-info
[/dev/cdc-wdm1] Successfully got signal info
LTE:
RSSI: '-62 dBm'
RSRQ: '-7 dB'
RSRP: '-90 dBm'
SNR: '23.8 dB'
Brief signal reception print - 3G/WCDMA connection, marginal signal strength, but still good signal quality thanks to low noise/interference; typical for remote areas with low population:
root@DFNEXT043:~# qmicli -d /dev/cdc-wdm1 --nas-get-signal-info
[/dev/cdc-wdm1] Successfully got signal info
WCDMA:
RSSI: '-103 dBm'
ECIO: '-6.5 dBm'
Verbose signal reception print - 3G/WCDMA connection, marginal signal strength, but still good signal quality thanks to low noise/interference; typical for remote areas with low population:
root@DFNEXT043:~# qmicli -d /dev/cdc-wdm1 --nas-get-signal-strength
[/dev/cdc-wdm1] Successfully got signal strength
Current:
Network 'umts': '-103 dBm'
RSSI:
Network 'umts': '-103 dBm'
ECIO:
Network 'umts': '-7.5 dBm'
IO: '-106 dBm'
SINR: (8) '9.0 dB'
Note: if device /dev/cdc-wdm1 was not working, try substitute 1 with 0 or 2. List devices available in your system with 'ls -l /dev/cdc-wdm*'.
ls -l /dev/cdc-wdm* crw------- 1 root root 180, 0 Nov 26 11:53 /dev/cdc-wdm0 crw------- 1 root root 180, 1 Nov 26 11:53 /dev/cdc-wdm1
3G modem modules (MC8705)
Login to the camera system, in text console run command 'minicom'. It should be preset to use the correct virtual serial port /dev/ttyS3. If not, run 'minicom -s' and select this port.
Rype following AT modem commands:
at+csq +CSQ: 14,99 OK at!gstatus? !GSTATUS: Current Time: 7833862 Temperature: 61 Bootup Time: 6442483 Mode: ONLINE System mode: WCDMA PS state: Attached WCDMA band: WCDMA800 GSM band: Unknown WCDMA channel: 4436 GSM channel: 65535 GMM (PS) state:REGISTERED NORMAL SERVICE MM (CS) state: IDLE NORMAL SERVICE WCDMA L1 State:L1M_DCH RRC State: CELL_DCH RX level (dBm):-85 OK
Signal strength (CSQ) >=5 is acceptable, although in country areas the internet may work even with lower signal quality as the masts are not too busy. In any case, the more the better. More than ~ 10 is very realiable connection.
To exit minicom, pres Ctrl+a q.
