wiki:lora:scan
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wiki:lora:scan [2019/09/25 11:08] ghi created |
wiki:lora:scan [2020/10/22 10:47] (current) tda |
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| ====== Radio scanning ====== | ====== Radio scanning ====== | ||
| - | ===== Boot Noise Measurment ===== | + | ===== Boot Noise Measurement ===== |
| The ''BNM'', which stand for Boot Noise Measurement, initiates a spectral scan at startup. | The ''BNM'', which stand for Boot Noise Measurement, initiates a spectral scan at startup. | ||
| - | |||
| - | <note important>This feature is only available on **iBTS** and **iFemtoCell** platforms.</note> | ||
| - | |||
| - | ==== The BNM files ==== | ||
| - | |||
| - | <code> | ||
| - | / | ||
| - | ├── etc | ||
| - | │ ├── bnm | ||
| - | │ │ ├── bnm-868.conf # The board configuration file. | ||
| - | │ │ │ | ||
| - | │ │ └── bnm.conf # The global configuration file. | ||
| - | │ │ | ||
| - | │ ├── init.d | ||
| - | │ │ └── bnm # The startup script. | ||
| - | │ │ | ||
| - | │ └── rc5.d | ||
| - | │ └── S55bnm -> ../init.d/bnm # The BNM is started whith runlevel 5. | ||
| - | │ | ||
| - | ├── usr | ||
| - | │ ├── bin | ||
| - | │ │ └── klk_spectral_scan # The utility which run the spectral scan. | ||
| - | │ │ | ||
| - | │ └── share | ||
| - | │ └── bnm | ||
| - | │ ├── bnm-868.conf # The default board configuration files. | ||
| - | │ ├── bnm-915.conf # These files define the min and max frequencies | ||
| - | │ ├── bnm-923.conf # to scan. | ||
| - | │ │ | ||
| - | │ └── klk-loraloc-v1.0.6.kbin # The needed loraloc firmware. | ||
| - | │ | ||
| - | └── var | ||
| - | ├── backups | ||
| - | │ └── bnm | ||
| - | │ ├── bnm.0.tar.gz # The backup files. Every output files are included | ||
| - | │ └── bnm.1.tar.gz # in these files. Backup files are rotated by size. | ||
| - | └── log | ||
| - | └── bnm | ||
| - | ├── bnm_slot1_radio1_180219155423.csv # The last output files. There is one for each slot | ||
| - | └── bnm_slot1_radio2_180219155423.csv # and for each radio. | ||
| - | </code> | ||
| ==== Configure BNM ==== | ==== Configure BNM ==== | ||
| Line 50: | Line 9: | ||
| These parameters can be changed by the user in the global configuration file ''/etc/bnm/bnm.conf''. | These parameters can be changed by the user in the global configuration file ''/etc/bnm/bnm.conf''. | ||
| The BNM feature takes some time when the gateway is booting. To avoid Boot Noise Measurement, disable it in this file (Set ''disable'' in the field ''BNM_ENABLE''). \\ | The BNM feature takes some time when the gateway is booting. To avoid Boot Noise Measurement, disable it in this file (Set ''disable'' in the field ''BNM_ENABLE''). \\ | ||
| - | The default configuration is the following. | + | The default configuration on iBTS (release 4.2) is the following: |
| <file bash bnm.conf> | <file bash bnm.conf> | ||
| Line 60: | Line 19: | ||
| BANDWIDTH_HZ=62500 | BANDWIDTH_HZ=62500 | ||
| BITRATE_BPS=600 | BITRATE_BPS=600 | ||
| - | RADIO_NB="1 2" | + | RADIO_NB="1" |
| # Number of samples by frequency. | # Number of samples by frequency. | ||
| Line 75: | Line 34: | ||
| </file> | </file> | ||
| //''RADIO_NB'' parameter is only available for Wirnet iBTS as this gateway owns 2 LoRa modems per LoRa module (up to 4 LoRaLOC modules). On Wirnet iFemtoCell, there is only one LoRa modem and no LoRa module.//\\ | //''RADIO_NB'' parameter is only available for Wirnet iBTS as this gateway owns 2 LoRa modems per LoRa module (up to 4 LoRaLOC modules). On Wirnet iFemtoCell, there is only one LoRa modem and no LoRa module.//\\ | ||
| + | |||
| + | //''SAMPLES_NB'' parameter is not taken into account for iFemtoCell-evolution and iStation product. Optimized kerlink spectral scan uses RSSI smoothing so SAMPLES_NB configuration parameter is ignored and RSSI smoothing is used instead of looping over frequencies (to have a quicker BNM).//\\ | ||
| + | |||
| \\ | \\ | ||
| - | The start frequency and the stop frequency are defined in the default board configuration file. The board configuration file name changes according to the region. | + | The start frequency and the stop frequency are defined in the board-specific configuration file, in the directory ''/etc/bnm/''. The board-specific configuration file name changes according to the region. |
| <file bash bnm-868.conf> | <file bash bnm-868.conf> | ||
| Line 173: | Line 135: | ||
| ==== Known issues ==== | ==== Known issues ==== | ||
| - | * The number of frequency steps is limited to 255. Mind that the step number must be below that limit. Adjustments are possible by configuring ''START_FREQ_MHZ'', ''STOP_FREQ_MHZ'' and ''STEP_FREQ_MHZ''. | + | * On iBTS, the number of frequency steps is limited to 255. Mind that the step number must be below that limit. Adjustments are possible by configuring ''START_FREQ_MHZ'', ''STOP_FREQ_MHZ'' and ''STEP_FREQ_MHZ''. |
| * BNM frequency configuration files depending on the board (''bnm-868.conf'', ''bnm-923.conf'', ''bnm-915.conf'') are not kept by default when upgrading the gateway. These files are not written in ''sysupgrade.conf'' and must be added if necessary. | * BNM frequency configuration files depending on the board (''bnm-868.conf'', ''bnm-923.conf'', ''bnm-915.conf'') are not kept by default when upgrading the gateway. These files are not written in ''sysupgrade.conf'' and must be added if necessary. | ||
wiki/lora/scan.1569402505.txt.gz · Last modified: 2019/09/25 11:08 by ghi
