// Do a O(n) pass through the motes updating the given moteSender's
// connectivity to and from each other mote
public void updateLossRates(MoteSimObject moteSender) {
Iterator it = state.getMoteSimObjects().iterator();
while (it.hasNext()) {
MoteSimObject moteReceiver = (MoteSimObject) it.next();
if (moteReceiver.getID() == moteSender.getID()) continue;
updateLossRate(moteSender, moteReceiver);
updateLossRate(moteReceiver, moteSender);
}
}
// Send the loss rate for the pair of motes to the simulator
public void publishLossRate(MoteSimObject moteSender, MoteSimObject moteReceiver, double prob) {
try {
int senderID = moteSender.getID();
int receiverID = moteReceiver.getID();
debug.err.println(
"RADIOMODEL: publishing rate [" + senderID + "->" + receiverID + "]: " + prob);
long scaledBitLossRate = (long) (curModel.getBitLossRate(prob) * 10000);
SetLinkProbCommand cmd =
new SetLinkProbCommand((short) senderID, 0L, (short) receiverID, scaledBitLossRate);
simComm.sendCommand(cmd);
} catch (java.io.IOException ioe) {
System.err.println("RADIOMODEL: Cannot send command: " + ioe);
}
}
// Send the loss rate for all pairs of motes to the simulator
public void publishModel() {
debug.err.println("RADIOMODEL: Publishing model, current is " + curModel);
Iterator it1 = state.getMoteSimObjects().iterator();
while (it1.hasNext()) {
MoteSimObject moteSender = (MoteSimObject) it1.next();
MoteCoordinateAttribute moteSenderCoord = moteSender.getCoordinate();
Iterator it2 = state.getMoteSimObjects().iterator();
while (it2.hasNext()) {
MoteSimObject moteReceiver = (MoteSimObject) it2.next();
if (moteReceiver.getID() == moteSender.getID()) continue;
String key = graphKey(moteSender, moteReceiver);
double prob = ((Double) connectivityGraph.get(key)).doubleValue();
publishLossRate(moteSender, moteReceiver, prob);
}
}
}
// Recalculate the loss rate for the pair of motes based on their
// distance and the current model
public void updateLossRate(MoteSimObject moteSender, MoteSimObject moteReceiver) {
double distance = moteSender.getDistance(moteReceiver);
double prob = curModel.getPacketLossRate(distance, this.scalingFactor);
debug.out.println(
"RADIOMODEL: "
+ moteSender
+ "->"
+ moteReceiver
+ " dist "
+ distance
+ " scale "
+ scalingFactor
+ " prob "
+ prob);
long scaledBitLossRate = (long) (curModel.getBitLossRate(prob) * 10000);
debug.out.println(
"RADIOMODEL: sampleLossRate "
+ "[moteSender "
+ moteSender
+ "] 1"
+ "[moteReceiver "
+ moteReceiver
+ "] "
+ "[packetLossRate "
+ prob
+ "] "
+ "[scaledBitLossRate "
+ scaledBitLossRate
+ "]");
connectivityGraph.put(graphKey(moteSender, moteReceiver), new Double(prob));
if (autoPublish) {
publishLossRate(moteSender, moteReceiver, prob);
}
}
public double getLossRate(MoteSimObject sender, MoteSimObject receiver) {
return getLossRate(sender.getID(), receiver.getID());
}
private String graphKey(MoteSimObject sender, MoteSimObject receiver) {
return graphKey(sender.getID(), receiver.getID());
}