Jamming detection is a feature that allows the NCP to report when it detects high levels of interference that are characteristic of intentional signal jamming.
The presence of this feature can be detected by checking for the presence of the CAP_JAM_DETECT
(value 6) capability in PROP_CAPS
.
b
CAP_JAM_DETECT
Octets: | 1 |
---|---|
Fields: | PROP_JAM_DETECT_ENABLE |
Indicates if jamming detection is enabled or disabled. Set to true to enable jamming detection.
This property is only available if the CAP_JAM_DETECT
capability is present in PROP_CAPS
.
b
CAP_JAM_DETECT
Octets: | 1 |
---|---|
Fields: | PROP_JAM_DETECTED |
Set to true if radio jamming is detected. Set to false otherwise.
When jamming detection is enabled, changes to the value of this property are emitted asynchronously via CMD_PROP_VALUE_IS
.
This property is only available if the CAP_JAM_DETECT
capability is present in PROP_CAPS
.
c
CAP_JAM_DETECT
This parameter describes the threshold RSSI level (measured in dBm) above which the jamming detection will consider the channel blocked.
c
CAP_JAM_DETECT
This parameter describes the window period for signal jamming detection.
i
CAP_JAM_DETECT
This parameter describes the number of aggregate seconds within the detection window where the RSSI must be above PROP_JAM_DETECT_RSSI_THRESHOLD
to trigger detection.
The behavior of the jamming detection feature when PROP_JAM_DETECT_BUSY
is larger than PROP_JAM_DETECT_WINDOW
is undefined.
LL
CAP_JAM_DETECT
This value provides information about current state of jamming detection module for monitoring/debugging purpose. It returns a 64-bit value where each bit corresponds to one second interval starting with bit 0 for the most recent interval and bit 63 for the oldest intervals (63 sec earlier). The bit is set to 1 if the jamming detection module observed/detected high signal level during the corresponding one second interval. The value is read-only and is encoded as two L
(uint32) values in little-endian format (first L
(uint32) value gives the lower bits corresponding to more recent history).