I am building an android application based on the Alt Beacon. I should preface this with the fact that my test device is a Digiland (P-O-S) tablet running android 4.4.
I am using the Radius Networks USB beacon and their Alt Beacon library found here: http://ift.tt/XAQdmW
In both my own application and in the reference application provided with the library I am seeing significant instability / extremely slow detection times for the beacon. For example, you can see the reference application's log below. The tablet is sitting no more than 1/2 meter away from the beacon the whole time.
Has anyone seen this behavior before? Am I doing something wrong? The broadcast rate on the beacon appears to be set to 10Hz and the power seems to be set to maximum. Should I get a different device and try it on that? I saw some other posts suggested turning off the wifi which I did, and this log is from a trial with the wifi off.
One thing I should note is that I have increased the scan frequency with the following block of code in the application subclass:
beaconManager.setBackgroundBetweenScanPeriod(9000l);
beaconManager.setBackgroundScanPeriod(1000l);
beaconManager.setForegroundBetweenScanPeriod(9000l);
beaconManager.setForegroundScanPeriod(1000l);
try{
beaconManager.updateScanPeriods();
}catch (RemoteException e){
e.printStackTrace();
}
I am not sure if this is done improperly, but when I remove it, I still see the same behavior described in the log below, just over a somewhat longer period of time.
Any advice people have would be much appreciated since I feel like I am spinning my wheels on this!
07-01 15:23:59.005 10771-10771/org.altbeacon.beaconreference D/ReferenceApplication﹕ setting up background monitoring for beacons and power saving
07-01 15:23:59.655 10771-10816/org.altbeacon.beaconreference D/ReferenceApplication﹕ did enter region.
07-01 15:23:59.655 10771-10816/org.altbeacon.beaconreference D/ReferenceApplication﹕ auto launching MainActivity
07-01 15:24:20.154 10771-11297/org.altbeacon.beaconreference D/ReferenceApplication﹕ did exit region
07-01 15:24:39.174 10771-11486/org.altbeacon.beaconreference D/ReferenceApplication﹕ did enter region.
07-01 15:25:00.132 10771-11647/org.altbeacon.beaconreference D/ReferenceApplication﹕ did exit region
07-01 15:25:09.472 10771-11730/org.altbeacon.beaconreference D/ReferenceApplication﹕ did enter region.
07-01 15:25:30.123 10771-11871/org.altbeacon.beaconreference D/ReferenceApplication﹕ did exit region
07-01 15:25:39.173 10771-11954/org.altbeacon.beaconreference D/ReferenceApplication﹕ did enter region.
07-01 15:26:00.065 10771-12070/org.altbeacon.beaconreference D/ReferenceApplication﹕ did exit region
07-01 15:26:29.099 10771-12083/org.altbeacon.beaconreference D/ReferenceApplication﹕ did enter region.
07-01 15:26:29.100 10771-12083/org.altbeacon.beaconreference D/ReferenceApplication﹕ Sending notification.
07-01 15:26:40.112 10771-12096/org.altbeacon.beaconreference D/ReferenceApplication﹕ did exit region
07-01 15:27:19.120 10771-12127/org.altbeacon.beaconreference D/ReferenceApplication﹕ did enter region.
07-01 15:27:19.120 10771-12127/org.altbeacon.beaconreference D/ReferenceApplication﹕ Sending notification.
07-01 15:27:40.041 10771-12208/org.altbeacon.beaconreference D/ReferenceApplication﹕ did exit region
07-01 15:27:59.110 10771-12786/org.altbeacon.beaconreference D/ReferenceApplication﹕ did enter region.
07-01 15:28:30.144 10771-13052/org.altbeacon.beaconreference D/ReferenceApplication﹕ did exit region
07-01 15:28:39.202 10771-13131/org.altbeacon.beaconreference D/ReferenceApplication﹕ did enter region.
07-01 15:28:50.133 10771-13226/org.altbeacon.beaconreference D/ReferenceApplication﹕ did exit region
07-01 15:29:09.125 10771-13375/org.altbeacon.beaconreference D/ReferenceApplication﹕ did enter region.
07-01 15:29:30.119 10771-13452/org.altbeacon.beaconreference D/ReferenceApplication﹕ did exit region
07-01 15:29:49.144 10771-13473/org.altbeacon.beaconreference D/ReferenceApplication﹕ did enter region.
07-01 15:30:00.060 10771-13510/org.altbeacon.beaconreference D/ReferenceApplication﹕ did exit region
07-01 15:30:19.134 10771-13552/org.altbeacon.beaconreference D/ReferenceApplication﹕ did enter region.
07-01 15:30:19.135 10771-13552/org.altbeacon.beaconreference D/ReferenceApplication﹕ Sending notification.
07-01 15:30:30.096 10771-13560/org.altbeacon.beaconreference D/ReferenceApplication﹕ did exit region
07-01 15:31:09.124 10771-13575/org.altbeacon.beaconreference D/ReferenceApplication﹕ did enter region.
07-01 15:31:09.125 10771-13575/org.altbeacon.beaconreference D/ReferenceApplication﹕ Sending notification.
07-01 15:31:20.110 10771-13576/org.altbeacon.beaconreference D/ReferenceApplication﹕ did exit region
07-01 15:31:29.101 10771-13578/org.altbeacon.beaconreference D/ReferenceApplication﹕ did enter region.
07-01 15:31:29.101 10771-13578/org.altbeacon.beaconreference D/ReferenceApplication﹕ Sending notification.
07-01 15:32:40.101 10771-13647/org.altbeacon.beaconreference D/ReferenceApplication﹕ did exit region
07-01 15:32:59.131 10771-13651/org.altbeacon.beaconreference D/ReferenceApplication﹕ did enter region.
One more interesting thing to note is that when I do a filter for onScanResult in the logs I see this:
07-01 15:45:49.074 10771-10839/org.altbeacon.beaconreference D/BluetoothAdapter﹕ onScanResult() - Device=24:4B:03:2E:00:D9 RSSI=-91
07-01 15:45:49.117 1425-1495/? D/BtGatt.GattService﹕ onScanResult() - address=00:07:80:1E:7E:B7, rssi=-56
07-01 15:45:49.120 10771-10784/org.altbeacon.beaconreference D/BluetoothAdapter﹕ onScanResult() - Device=00:07:80:1E:7E:B7 RSSI=-56
07-01 15:45:49.365 1425-1495/? D/BtGatt.GattService﹕ onScanResult() - address=62:44:C6:64:4D:A5, rssi=-76
07-01 15:45:49.368 10771-10783/org.altbeacon.beaconreference D/BluetoothAdapter﹕ onScanResult() - Device=62:44:C6:64:4D:A5 RSSI=-76
07-01 15:45:59.082 1425-1495/? D/BtGatt.GattService﹕ onScanResult() - address=62:44:C6:64:4D:A5, rssi=-77
07-01 15:45:59.084 10771-10784/org.altbeacon.beaconreference D/BluetoothAdapter﹕ onScanResult() - Device=62:44:C6:64:4D:A5 RSSI=-77
07-01 15:45:59.130 1425-1495/? D/BtGatt.GattService﹕ onScanResult() - address=00:07:80:1E:7E:B7, rssi=-59
07-01 15:45:59.133 10771-10783/org.altbeacon.beaconreference D/BluetoothAdapter﹕ onScanResult() - Device=00:07:80:1E:7E:B7 RSSI=-59
07-01 15:45:59.140 1425-1495/? D/BtGatt.GattService﹕ onScanResult() - address=24:4B:03:2E:00:D9, rssi=-76
07-01 15:45:59.141 10771-10839/org.altbeacon.beaconreference D/BluetoothAdapter﹕ onScanResult() - Device=24:4B:03:2E:00:D9 RSSI=-76
07-01 15:46:09.115 1425-1495/? D/BtGatt.GattService﹕ onScanResult() - address=00:07:80:1E:7E:B7, rssi=-58
07-01 15:46:09.117 10771-10783/org.altbeacon.beaconreference D/BluetoothAdapter﹕ onScanResult() - Device=00:07:80:1E:7E:B7 RSSI=-58
07-01 15:46:09.124 1425-1495/? D/BtGatt.GattService﹕ onScanResult() - address=24:4B:03:2E:00:D9, rssi=-86
07-01 15:46:09.126 10771-10839/org.altbeacon.beaconreference D/BluetoothAdapter﹕ onScanResult() - Device=24:4B:03:2E:00:D9 RSSI=-86
07-01 15:46:09.135 1425-1495/? D/BtGatt.GattService﹕ onScanResult() - address=62:44:C6:64:4D:A5, rssi=-76
07-01 15:46:09.139 10771-10784/org.altbeacon.beaconreference D/BluetoothAdapter﹕ onScanResult() - Device=62:44:C6:64:4D:A5 RSSI=-76
07-01 15:46:19.060 1425-1495/? D/BtGatt.GattService﹕ onScanResult() - address=24:4B:03:2E:00:D9, rssi=-91
07-01 15:46:19.062 10771-10839/org.altbeacon.beaconreference D/BluetoothAdapter﹕ onScanResult() - Device=24:4B:03:2E:00:D9 RSSI=-91
07-01 15:46:19.092 1425-1495/? D/BtGatt.GattService﹕ onScanResult() - address=00:07:80:1E:7E:B7, rssi=-64
The 00:07:80 device is my beacon, but I have no idea whatsoever when the 24:4B:03 device is. Does anyone know how I can get more data about this device? Is it possible that it is interfering with my actual signal? I have tried using both
Region region = new Region("backgroundRegion",
Identifier.parse("2F234454-CF6D-4A0F-ADF2-F4911BA9FFA6"), null, null);
and
Region region = new Region("backgroundRegion",null, null, null);
Unfortunately I get this random fluctuation with both variations.
UPDATE:
I also ran this with the beaconManager.setDebug(true) flag activated. Here is the resulting log
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