diff --git a/src/main/java/fr/ntr/scheduler/MaxSNR.java b/src/main/java/fr/ntr/scheduler/MaxSNR.java
index 5347c32..4dca0c4 100644
--- a/src/main/java/fr/ntr/scheduler/MaxSNR.java
+++ b/src/main/java/fr/ntr/scheduler/MaxSNR.java
@@ -11,17 +11,8 @@ public class MaxSNR extends Scheduler {
 	public void scheduling() {
 	} 
 	
-	private User selectionUtilisateur(int Ts, int Sp, List<User> Users) {
-		User selectedUser = null;
-		double maxSNR= 0;
-		for (User user : Users) {
-			double snr = ;
-			if (snr > maxSNR) {
-				maxSNR = snr;
-				selectedUser = user;
-			}
-		}
-		return selectedUser;
+	private void selectionUtilisateur(List<User> Users) {
+		for(User u: Users)
 	}
 
 	public MaxSNR(String name) {
diff --git a/src/main/java/fr/ntr/scheduler/RoundRobin.java b/src/main/java/fr/ntr/scheduler/RoundRobin.java
index f181539..2d8f8b6 100644
--- a/src/main/java/fr/ntr/scheduler/RoundRobin.java
+++ b/src/main/java/fr/ntr/scheduler/RoundRobin.java
@@ -27,7 +27,7 @@ public class RoundRobin extends Scheduler {
 	 * Entry Time slot (int), Sous porteuse(int), and users ( List<User>)
 	 * Return the user in function of TS and SP selected
 	 */
-	private UserGroup UserSelection(int Ts, int Sp, List<UserGroup> Users) {
+	private UserGroup UserSelection(int Ts, int Sp, UserGroup Users) {
 		for (int i = 0; i < Ts; i++) {
 			for (int j = 0; j < Sp; j++) {
 					index++;