diff --git a/src/main/java/fr/ntr/Main.java b/src/main/java/fr/ntr/Main.java
index 68c86ff..8431425 100644
--- a/src/main/java/fr/ntr/Main.java
+++ b/src/main/java/fr/ntr/Main.java
@@ -1,6 +1,7 @@
 package fr.ntr;
 
-import fr.ntr.scheduler.RoundRobin;
+import fr.ntr.scheduler.MaxSNR;
+import fr.ntr.scheduler.ProportionalFair;
 import fr.ntr.scheduler.Scheduler;
 
 import java.io.File;
@@ -10,6 +11,7 @@ import java.util.List;
 import java.util.Objects;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
 
 public class Main {
 
@@ -44,16 +46,23 @@ public class Main {
                     });
             AccessPoint.setTimeSlotNb(timeSlotNb);
             AccessPoint.setSubCarrierNb(subCarrierNb);
-            try(ExecutorService executor = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors())) {
-                for(int i = 2; i <= maximumLoad; i += 2) {
-                    List<User> users = generateUsers(i, timeSlotNb, subCarrierNb);
-                    ResourceBlock[][] frame = new ResourceBlock[timeSlotNb][subCarrierNb];
-                    // Scheduler scheduler = new MaxSNR(frame, users);
-                    // Scheduler scheduler = new ProportionalFair(frame, users);
-                    Scheduler scheduler = new RoundRobin(frame, users);
-                    AccessPoint accessPoint = new AccessPoint(scheduler, frame, users);
-                    executor.submit(() -> accessPoint.startSimulation(numberOfTicks));
+            ExecutorService executor = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors());
+            for(int i = 2; i <= maximumLoad; i += 2) {
+                List<User> users = generateUsers(i, timeSlotNb, subCarrierNb);
+                ResourceBlock[][] frame = new ResourceBlock[timeSlotNb][subCarrierNb];
+                // Scheduler scheduler = new MaxSNR(frame, users);
+                Scheduler scheduler = new ProportionalFair(frame, users);
+                // Scheduler scheduler = new RoundRobin(frame, users);
+                AccessPoint accessPoint = new AccessPoint(scheduler, frame, users);
+                executor.submit(() -> accessPoint.startSimulation(numberOfTicks));
+            }
+            executor.shutdown();
+            try {
+                if(!executor.awaitTermination(2, TimeUnit.MINUTES)) {
+                    executor.shutdownNow();
                 }
+            } catch (InterruptedException e) {
+                e.printStackTrace();
             }
         } else {
             System.err.println("Please give launch arguments");
diff --git a/src/main/java/fr/ntr/scheduler/MaxSNR.java b/src/main/java/fr/ntr/scheduler/MaxSNR.java
index c56f9e5..7530bda 100644
--- a/src/main/java/fr/ntr/scheduler/MaxSNR.java
+++ b/src/main/java/fr/ntr/scheduler/MaxSNR.java
@@ -1,18 +1,18 @@
 package fr.ntr.scheduler;
 import java.util.List;
 
-import fr.ntr.Packets;
+import fr.ntr.AccessPoint;
 import fr.ntr.ResourceBlock;
 import fr.ntr.User;
 
 public class MaxSNR extends Scheduler {
 
-	private List<User> users;
+	private final List<User> users;
 
-	private ResourceBlock[][] frame;
+	private final ResourceBlock[][] frame;
 
 
-	public MaxSNR( ResourceBlock[][] frame, List<User> users) {
+	public MaxSNR(ResourceBlock[][] frame, List<User> users) {
 		this.frame = frame;
 		this.users = users;
 	}
@@ -20,8 +20,8 @@ public class MaxSNR extends Scheduler {
 	@Override
 	public void scheduling(int ticks) {
 		User userMax;
-		for(int ts = 0; ts < 2; ts++){
-			for(int sp = 0; sp < 100; sp++){
+		for(int ts = 0; ts < AccessPoint.getTimeSlotNb(); ts++){
+			for(int sp = 0; sp < AccessPoint.getSubCarrierNb(); sp++){
 				userMax = userSelection(ts, sp);
 				allocateRessource(userMax, frame, ts, sp, ticks);
 			}
@@ -36,11 +36,10 @@ public class MaxSNR extends Scheduler {
 		double maxSnr = 0.0;
 		User userMax = null;
 		for(User u: users) {
-			if (!u.getPacketsToSend().isEmpty()) {
-				if (maxSnr < u.getBandwidthTable()[ts][sp]) {
-					maxSnr = u.getBandwidthTable()[ts][sp];
-					userMax = u;
-				}
+			if (!u.getPacketsToSend().isEmpty() && (maxSnr < u.getBandwidthTable()[ts][sp])) {
+				maxSnr = u.getBandwidthTable()[ts][sp];
+				userMax = u;
+
 			}
 		}
 		return userMax;
diff --git a/src/main/java/fr/ntr/scheduler/ProportionalFair.java b/src/main/java/fr/ntr/scheduler/ProportionalFair.java
index 94e9403..6b33d51 100644
--- a/src/main/java/fr/ntr/scheduler/ProportionalFair.java
+++ b/src/main/java/fr/ntr/scheduler/ProportionalFair.java
@@ -3,57 +3,51 @@ package fr.ntr.scheduler;
 import java.util.ArrayList;
 import java.util.List;
 
+import fr.ntr.AccessPoint;
 import fr.ntr.ResourceBlock;
 import fr.ntr.User;
 
 public class ProportionalFair extends Scheduler {
 
+	private final List<User> users;
 
-	private List<User> users;
-
-	private ResourceBlock[][] frame;
+	private final ResourceBlock[][] frame;
 
 	public ProportionalFair(ResourceBlock[][] frame, List<User> users) {
 		this.frame = frame;
 		this.users = users;
-	} 
-	
+	}
+
 	@Override
 	public void scheduling(int ticks) {
-		ArrayList<Double> averageBandwiths = new ArrayList<Double>();
-		for(User u : users){
-			double avg = 0d;
-			double[][] bandwidthTable = u.getBandwidthTable();
-			for(int i = 0; i < bandwidthTable.length; i++){
-				for(int j = 0; j < bandwidthTable[i].length; j++){
-					avg += bandwidthTable[i][j];
-				}
-			}
-			avg = avg / (bandwidthTable.length * bandwidthTable[0].length);
-			averageBandwiths.add(avg);
-		}
-		for(int ts = 0; ts < 2; ts++){
-			for(int sp = 0; sp < 100; sp++){
-				User selectedUser = userSelection(ts, sp, users, averageBandwiths);
+		for(int ts = 0; ts < AccessPoint.getTimeSlotNb(); ts++){
+			for(int sp = 0; sp < AccessPoint.getSubCarrierNb(); sp++){
+				User selectedUser = userSelection(ts, sp, users);
 				allocateRessource(selectedUser, frame, ts, sp, ticks);
 			}
 		}
 	}
-		
-	private User userSelection(int ts, int sp, List<User> users, List<Double> averageBandwiths) {
+
+	private User userSelection(int ts, int sp, List<User> users) {
 		double PF = 0.0;
 		User selectedUser = null;
-		for(int i = 0; i < users.size(); i++){
-			User u = users.get(i);
+		for (User u : users) {
+			double avg = 0d;
+			double[][] bandwidthTable = u.getBandwidthTable();
+			for (double[] doubles : bandwidthTable) {
+				for (double aDouble : doubles) {
+					avg += aDouble;
+				}
+			}
+			avg = avg / (bandwidthTable.length * bandwidthTable[0].length);
 			double mkn = u.getBandwidthTable()[ts][sp];
-			double averageMkn = averageBandwiths.get(i);
-			double pf = mkn / averageMkn;
-			if (PF < pf){
+			double pf = mkn / avg;
+			if (PF < pf) {
 				PF = pf;
 				selectedUser = u;
 			}
 		}
 		return selectedUser;
-	}	
-		
+	}
+
 }
diff --git a/src/main/java/fr/ntr/scheduler/Scheduler.java b/src/main/java/fr/ntr/scheduler/Scheduler.java
index 29e2fe6..e3cb738 100644
--- a/src/main/java/fr/ntr/scheduler/Scheduler.java
+++ b/src/main/java/fr/ntr/scheduler/Scheduler.java
@@ -16,18 +16,8 @@ public abstract class Scheduler {
 	protected void allocateRessource(User userMax, ResourceBlock[][] frame, int ts, int sp, int ticks) {
 		if (userMax != null && !userMax.getPacketsToSend().isEmpty()) {
 			Packets p = userMax.getPacketsToSend().get(userMax.getPacketsToSend().size()-1);
-			if(p.getBitsNumberRemaining() >= 0){
-				p.decreaseBitsNumberRemaining((int) userMax.getBandwidthTable()[ts][sp]);
-				if(p.getBitsNumberRemaining() <= 0) {
-					if(ticks == 0){
-						p.setDurationSending(1);
-					}else {
-						p.setDurationSending(ticks);
-					}
-					userMax.getPacketsSent().add(p);
-					userMax.getPacketsToSend().remove(p);
-				}
-			} else {
+			p.decreaseBitsNumberRemaining((int) userMax.getBandwidthTable()[ts][sp]);
+			if(p.getBitsNumberRemaining() <= 0) {
 				if(ticks == 0){
 					p.setDurationSending(1);
 				}else {