Changeset 511

Timestamp:

11/11/09 16:03:01 (14 years ago)

Author:

trnewman

Message:

Making it obvious where the core DSA algorithm is located

Files:

• vtcross/trunk/src/cognitive_engines/DSA_CE/DSA_CognitiveEngine.cpp (modified) (3 diffs)

vtcross/trunk/src/cognitive_engines/DSA_CE/DSA_CognitiveEngine.cpp

@@ -165 +165 @@
     /* Calculate Utility */
     float oldUtilityValue = returnValues[UTILITY];
-    
+   
+
+    //////////////////////////////////////////////
+    //
+    //  BEGIN CORE DSA ALGORITHM UTILITY FUNCTION
+    //
+    //////////////////////////////////////////////
+ 
     // Set DSA utility to take into account both the previously sensed
     //  energy and the average communication time.
@@ -174 +181 @@
     // So we should lower the utility for this channel.
 
+    int reward = 20;
+    int punishment = -100;
+
     if((observables[COMMUNICATION_TIME].value != 0) || (observables[ENERGY].value > 1000)) { 
-        newUtilityValue = newUtilityValue - 100;
+        printf("Cognitive Engine:: Primary User caused channel change - Decrementing Utility.");
+        newUtilityValue = newUtilityValue + punishment;
     } else {
-        newUtilityValue = newUtilityValue + 20;
-    }
-
+        printf("Cognitive Engine:: Scan Mode:: No PU detected - Incrementing Utility.");
+        newUtilityValue = newUtilityValue + reward;
+    }
 
     if(newUtilityValue <= 100)
@@ -185 +196 @@
 
     obsVals[obsValueIndex] = newUtilityValue;
+
+    //////////////////////////////////////////////
+    //
+    //  END CORE DSA ALGORITHM UTILITY FUNCTION
+    //
+    //////////////////////////////////////////////
+
 
     size_t returnValueIndex = 0;