66 lines
5.4 KiB
Markdown
66 lines
5.4 KiB
Markdown
Non-intrusive monitoring of the RF-environment
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==============================================
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rf_environment runs the clear channel assessment (CCA) test over
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all 802.15.4 channels and reports stats per channel. The CCA test
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is run for different CCA thresholds from -60dBm to -90dBm. CCA is
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a non-destructive for the rf-environment as it's just listens.
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Best and worst channel is printed as average rf activity.
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See example below from Uppsala Kungs-Vaksalagatan. 2017-05-08
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and Electrum Stockholm. Originally developed for the Atmel avr-rss2
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platform.
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Probability for not passing a CCA check in percent per channel.
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3-minute samples. Of course this just snapshots to illustrate
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functionality
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<pre>
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Chan: 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
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---------------------------------------------------------------------
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cca_thresh=-82dBm 0 0 7 0 1 2 2 0 0 0 0 6 30 5 0 1 Best=11 Worst=23 Ave=3.09
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cca_thresh=-80dBm 0 0 1 0 1 0 3 1 0 0 1 16 15 1 2 0 Best=11 Worst=22 Ave=2.31
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cca_thresh=-78dBm 0 0 4 10 0 2 2 2 1 2 0 12 23 4 1 1 Best=11 Worst=23 Ave=3.65
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cca_thresh=-76dBm 0 0 12 8 4 0 6 4 10 3 1 24 15 0 1 1 Best=11 Worst=22 Ave=5.37
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cca_thresh=-74dBm 0 1 1 2 1 0 4 1 2 1 2 10 16 22 5 1 Best=11 Worst=24 Ave=3.96
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cca_thresh=-72dBm 0 1 3 3 3 0 2 1 1 4 2 5 3 8 5 3 Best=11 Worst=24 Ave=2.26
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cca_thresh=-70dBm 0 0 5 3 3 3 1 5 9 26 60 77 53 35 27 8 Best=11 Worst=22 Ave=19.40
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cca_thresh=-68dBm 0 1 9 10 1 2 1 3 0 4 59 32 60 37 24 3 Best=11 Worst=23 Ave=14.89
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cca_thresh=-66dBm 0 2 3 2 1 2 2 1 5 15 50 64 77 49 16 5 Best=11 Worst=23 Ave=17.87
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cca_thresh=-64dBm 1 3 0 1 1 2 1 1 6 18 19 31 62 47 25 3 Best=13 Worst=23 Ave=13.35
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cca_thresh=-62dBm 0 0 3 6 2 5 2 0 23 43 37 25 18 32 27 25 Best=11 Worst=20 Ave=15.14
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cca_thresh=-60dBm 2 2 3 3 2 3 1 8 34 37 40 49 72 55 9 9 Best=17 Worst=23 Ave=20.17
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cca_thresh=-90dBm 0 1 11 10 4 8 2 1 10 22 15 17 22 18 3 9 Best=11 Worst=20 Ave=9.06
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cca_thresh=-88dBm 0 0 17 37 2 3 2 5 12 18 24 43 13 28 6 3 Best=11 Worst=22 Ave=12.90
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cca_thresh=-86dBm 0 3 12 2 0 3 3 4 12 11 17 13 42 19 17 10 Best=11 Worst=23 Ave=10.05
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cca_thresh=-84dBm 0 0 3 3 0 3 2 4 12 11 14 13 23 9 11 15 Best=11 Worst=23 Ave=7.33
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cca_thresh=-82dBm 0 2 30 24 2 4 2 6 3 11 4 10 8 3 4 1 Best=11 Worst=13 Ave=6.66
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cca_thresh=-80dBm 0 1 9 3 0 1 6 6 15 0 0 8 11 4 3 3 Best=11 Worst=19 Ave=4.05
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cca_thresh=-78dBm 0 1 3 2 0 1 7 8 1 0 4 13 6 3 1 1 Best=11 Worst=22 Ave=2.79
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cca_thresh=-76dBm 0 0 1 7 1 8 11 10 21 1 2 10 28 3 0 1 Best=11 Worst=23 Ave=6.15
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cca_thresh=-74dBm 0 3 2 2 0 1 6 4 8 0 3 5 8 9 0 0 Best=11 Worst=24 Ave=2.77
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cca_thresh=-72dBm 0 0 0 3 1 2 2 2 1 1 3 7 11 9 1 1 Best=11 Worst=23 Ave=2.40
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cca_thresh=-70dBm 0 1 11 2 1 2 4 1 4 4 13 31 7 1 1 1 Best=11 Worst=22 Ave=4.69
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cca_thresh=-68dBm 0 0 13 26 1 5 7 8 3 1 1 20 43 7 1 0 Best=11 Worst=23 Ave=8.21
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cca_thresh=-66dBm 1 2 13 9 1 3 3 1 3 16 11 22 9 7 0 1 Best=25 Worst=22 Ave=5.79
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cca_thresh=-64dBm 0 1 6 2 1 2 2 0 3 8 4 8 14 1 4 1 Best=11 Worst=23 Ave=3.10
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cca_thresh=-62dBm 0 1 4 0 1 2 1 3 1 1 9 16 22 7 1 1 Best=11 Worst=23 Ave=3.91
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cca_thresh=-60dBm 0 1 2 0 1 0 1 1 15 33 4 5 26 2 0 0 Best=11 Worst=20 Ave=5.34
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cca_thresh=-90dBm 0 1 0 2 2 0 1 1 0 1 6 12 24 10 2 1 Best=11 Worst=23 Ave=3.64
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cca_thresh=-88dBm 0 0 0 2 0 1 0 2 0 2 2 9 10 0 0 1 Best=11 Worst=23 Ave=1.54
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Electrum Kista Stockolm (KTH/SICS etc)
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cca_thresh=-62dBm 2 17 26 2 2 1 14 18 17 4 9 6 5 31 47 2 Best=16 Worst=25 Ave=12.07
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cca_thresh=-60dBm 7 8 13 2 2 1 6 6 7 1 11 32 16 11 1 2 Best=16 Worst=22 Ave=7.54
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cca_thresh=-90dBm 1 9 13 3 2 1 31 32 10 2 2 12 7 10 1 2 Best=11 Worst=18 Ave=8.17
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cca_thresh=-88dBm 4 8 10 2 2 1 5 12 6 3 5 8 2 9 1 2 Best=16 Worst=18 Ave=4.45
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cca_thresh=-86dBm 11 9 10 2 2 1 5 16 21 2 5 5 2 3 1 4 Best=25 Worst=19 Ave=5.88
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cca_thresh=-84dBm 4 9 7 5 5 1 6 46 16 3 16 2 13 5 1 2 Best=25 Worst=18 Ave=8.38
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cca_thresh=-82dBm 15 9 14 2 2 1 7 22 14 1 15 2 10 10 1 19 Best=25 Worst=18 Ave=8.68
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cca_thresh=-80dBm 1 8 16 3 2 1 14 23 6 1 10 22 5 7 3 4 Best=11 Worst=18 Ave=7.38
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cca_thresh=-78dBm 16 9 25 3 3 1 9 8 12 2 7 2 3 2 1 2 Best=16 Worst=13 Ave=6.13
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cca_thresh=-76dBm 12 9 23 4 4 0 36 9 10 2 32 14 7 4 1 3 Best=16 Worst=17 Ave=10.13
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cca_thresh=-74dBm 8 24 9 8 5 0 16 6 10 2 3 31 27 18 1 3 Best=16 Worst=22 Ave=10.32
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cca_thresh=-72dBm 4 7 18 4 2 0 6 11 7 1 3 6 3 9 1 2 Best=16 Worst=13 Ave=4.80
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</pre> |