diff --git a/src/LoRaApp/SimpleLoRaApp.cc b/src/LoRaApp/SimpleLoRaApp.cc
index 70fb51e..e7f2fca 100644
--- a/src/LoRaApp/SimpleLoRaApp.cc
+++ b/src/LoRaApp/SimpleLoRaApp.cc
@@ -195,15 +195,22 @@ void SimpleLoRaApp::sendJoinRequest()
         if(ADR_ACK_CNT >= ADR_ACK_LIMIT + ADR_ACK_DELAY)
         {
             ADR_ACK_CNT = 0;
-            increaseSFIfPossible();
+            increaseTPOrSFIfPossible();
         }
     }
     emit(LoRa_AppPacketSent, loRaSF);
 }
 
-void SimpleLoRaApp::increaseSFIfPossible()
+void SimpleLoRaApp::increaseTPOrSFIfPossible()
 {
-    if(loRaSF < 12) loRaSF++;
+    if(loRaTP < 14)
+    {
+        loRaTP += 3; // at the beginning increase the Transmission Power
+    }
+    else if(loRaSF < 12) 
+    {
+        loRaSF++; // secondly increase Spreading Factor
+    }
 }
 
 } //end namespace inet
diff --git a/src/LoRaApp/SimpleLoRaApp.h b/src/LoRaApp/SimpleLoRaApp.h
index f039ac7..4bde377 100644
--- a/src/LoRaApp/SimpleLoRaApp.h
+++ b/src/LoRaApp/SimpleLoRaApp.h
@@ -67,7 +67,7 @@ class INET_API SimpleLoRaApp : public cSimpleModule, public ILifecycle
         int ADR_ACK_LIMIT = 64; //64;
         int ADR_ACK_DELAY = 32; //32;
         bool sendNextPacketWithADRACKReq = false;
-        void increaseSFIfPossible();
+        void increaseTPOrSFIfPossible();
 
     public:
         SimpleLoRaApp() {}