diff --git a/src/main/java/fr/ntr/Packets.java b/src/main/java/fr/ntr/Packets.java
index 56cd443..d52ecab 100644
--- a/src/main/java/fr/ntr/Packets.java
+++ b/src/main/java/fr/ntr/Packets.java
@@ -1,4 +1,16 @@
 package fr.ntr;
 
 public class Packets {
+    static final int packetSize = 100;
+    private int creationTime;
+    private int endTimeSending;
+    private double bitsNumberRemaining;
+    private User user;
+
+    public Packets(int creationTime, int endTimeSending, double bitsNumberRemaining, User user){
+        this.creationTime = creationTime;
+        this.endTimeSending = endTimeSending;
+        this.bitsNumberRemaining = bitsNumberRemaining;
+        this.user = user;
+    }
 }
diff --git a/src/main/java/fr/ntr/ResourceBlock.java b/src/main/java/fr/ntr/RessourceUnit.java
similarity index 100%
rename from src/main/java/fr/ntr/ResourceBlock.java
rename to src/main/java/fr/ntr/RessourceUnit.java