diff --git a/bundle/src/assembly/resources/scenarios/Barnim/cell/cell_config.json b/bundle/src/assembly/resources/scenarios/Barnim/cell/cell_config.json
index ff729782a..920100c68 100644
--- a/bundle/src/assembly/resources/scenarios/Barnim/cell/cell_config.json
+++ b/bundle/src/assembly/resources/scenarios/Barnim/cell/cell_config.json
@@ -1,4 +1,11 @@
 {
     "networkConfigurationFile": "network.json",
-    "regionConfigurationFile": "regions.json"
+    "regionConfigurationFile": "regions.json",
+    "headerLengths": {
+        "udpHeader": "8 Bytes",
+        "tcpHeader": "20 Bytes",
+        "ipHeader": "20 Bytes",
+        "cellularHeader": "18 Bytes",
+        "ethernetHeader": "18 Bytes"
+    }
 }
\ No newline at end of file
diff --git a/bundle/src/assembly/resources/scenarios/Tiergarten/cell/cell_config.json b/bundle/src/assembly/resources/scenarios/Tiergarten/cell/cell_config.json
index c54183694..920100c68 100644
--- a/bundle/src/assembly/resources/scenarios/Tiergarten/cell/cell_config.json
+++ b/bundle/src/assembly/resources/scenarios/Tiergarten/cell/cell_config.json
@@ -5,7 +5,7 @@
         "udpHeader": "8 Bytes",
         "tcpHeader": "20 Bytes",
         "ipHeader": "20 Bytes",
-        "cellularHeader": "26 Bytes",
-        "ethernetHeader": "38 Bytes"
+        "cellularHeader": "18 Bytes",
+        "ethernetHeader": "18 Bytes"
     }
 }
\ No newline at end of file
diff --git a/test/mosaic-integration-tests/src/test/java/org/eclipse/mosaic/test/CellSnsCamSendAndReceiveIT.java b/test/mosaic-integration-tests/src/test/java/org/eclipse/mosaic/test/CellSnsCamSendAndReceiveIT.java
index 001ba15ef..970d280ad 100644
--- a/test/mosaic-integration-tests/src/test/java/org/eclipse/mosaic/test/CellSnsCamSendAndReceiveIT.java
+++ b/test/mosaic-integration-tests/src/test/java/org/eclipse/mosaic/test/CellSnsCamSendAndReceiveIT.java
@@ -145,11 +145,11 @@ public void cellMessagesHandledInModules() throws Exception {
         // send 150 uplink messages from veh_0 and veh_1 + 2*RoundTripMessage + 2*Messages for nack + 1*Nack-test = 305
         LogAssert.contains(simulationRule, CELL_LOG, ".*ChainManager - \\[Upstream\\] Processed messages: 305.*");
         /* received (26 rsu_0 + 30 rsu_1 + 30 rsu_2 + 150 self) messages from veh_0 = 236
-        and (150 broadcast + 2 region overlap) - (126 messages not sendable due to capacity limit) messages from veh_1 = 26
+        and (150 broadcast + 2 region overlap) - (120 messages not sendable due to capacity limit) messages from veh_1 = 32
         and 2*RoundTripMessage = 2
         and 2*Messages for nack test = 2
         and 1*Nack-Test ==> total 267*/
-        LogAssert.contains(simulationRule, CELL_LOG, ".*ChainManager - \\[Downstream\\] Processed messages: 267.*");
+        LogAssert.contains(simulationRule, CELL_LOG, ".*ChainManager - \\[Downstream\\] Processed messages: 273.*");
     }
 
     @Test
@@ -180,11 +180,11 @@ public void applicationsCamReceptions() throws Exception {
 
         // geo broadcast
         // locate rsu_0 and rsu_1 in the same mbms broadcast region
-        assertOccurrences(RSU_0_RECEIVE_MSG_APP_CELL_LOG, ".*Received CAM from veh_1.*", 7);
+        assertOccurrences(RSU_0_RECEIVE_MSG_APP_CELL_LOG, ".*Received CAM from veh_1.*", 8);
         // locate rsu_0 and rsu_1 in the same mbms broadcast region
-        assertOccurrences(RSU_1_RECEIVE_MSG_APP_CELL_LOG, ".*Received CAM from veh_1.*", 7);
+        assertOccurrences(RSU_1_RECEIVE_MSG_APP_CELL_LOG, ".*Received CAM from veh_1.*", 8);
         // locate rsu_0 and rsu_2 in the same mbms broadcast region
-        assertOccurrences(RSU_2_RECEIVE_MSG_APP_CELL_LOG, ".*Received CAM from veh_1.*", 12);
+        assertOccurrences(RSU_2_RECEIVE_MSG_APP_CELL_LOG, ".*Received CAM from veh_1.*", 15);
 
         // adhoc
         // test pattern no interference with ad hoc rsus
@@ -210,8 +210,8 @@ public void roundTripMessageTakesRightAmountOfTime() throws Exception {
         long timeOfSending = 310 * TIME.SECOND;
         long delayTmcUpload = 50 * TIME.MILLI_SECOND;
         long delayTmcDownload = 50 * TIME.MILLI_SECOND;
-        long delayVehUpload = 106 * TIME.MILLI_SECOND; //TODO check those values, are those random?
-        long delayVehDownload = 57 * TIME.MILLI_SECOND; //TODO check those values, are those random? if so, than its not ideal for a test
+        long delayVehUpload = 86 * TIME.MILLI_SECOND; //TODO check those values, are those random?
+        long delayVehDownload = 67 * TIME.MILLI_SECOND; //TODO check those values, are those random? if so, than its not ideal for a test
 
         long timeFromTmcToVeh = delayTmcUpload + delayVehDownload;
         long timeFromVehToTmc = delayVehUpload + delayTmcDownload;
diff --git a/test/scenarios/cell-sns-cam-send-and-receive/cell/cell_config.json b/test/scenarios/cell-sns-cam-send-and-receive/cell/cell_config.json
index c54183694..920100c68 100644
--- a/test/scenarios/cell-sns-cam-send-and-receive/cell/cell_config.json
+++ b/test/scenarios/cell-sns-cam-send-and-receive/cell/cell_config.json
@@ -5,7 +5,7 @@
         "udpHeader": "8 Bytes",
         "tcpHeader": "20 Bytes",
         "ipHeader": "20 Bytes",
-        "cellularHeader": "26 Bytes",
-        "ethernetHeader": "38 Bytes"
+        "cellularHeader": "18 Bytes",
+        "ethernetHeader": "18 Bytes"
     }
 }
\ No newline at end of file