diff --git a/src/logic/mod.rs b/src/logic/mod.rs
index 8a5ceb3..9ce9319 100644
--- a/src/logic/mod.rs
+++ b/src/logic/mod.rs
@@ -13,7 +13,7 @@ use crate::logic::rnti_matcher::TrafficCollection;
 use crate::ngscope::config::NgScopeConfig;
 use crate::ngscope::types::NgScopeCellDci;
 
-pub mod cell_sink;
+pub mod model_handler;
 pub mod cell_source;
 pub mod ngscope_controller;
 pub mod rnti_matcher;
@@ -28,6 +28,7 @@ pub const BUS_SIZE_APP_STATE: usize = 50;
 pub const BUS_SIZE_DCI: usize = 100000;
 pub const BUS_SIZE_CELL_INFO: usize = 100;
 pub const BUS_SIZE_RNTI: usize = 100;
+pub const BUS_SIZE_METRIC: usize = 100;
 
 pub trait WorkerState: Sized + Clone + Sync + Debug {
     fn to_general_state(&self) -> GeneralState;
@@ -108,21 +109,21 @@ impl WorkerState for MainState {
 }
 
 #[derive(Clone, Copy, Debug, PartialEq)]
-pub enum SinkState {
+pub enum ModelState {
     Running,
     Stopped,
     SpecialState,
 }
 
-impl WorkerState for SinkState {
+impl WorkerState for ModelState {
     fn worker_name() -> String {
-        "sink".to_owned()
+        "model".to_owned()
     }
 
     fn to_general_state(&self) -> GeneralState {
         match self {
-            SinkState::Running => GeneralState::Running,
-            SinkState::Stopped => GeneralState::Stopped,
+            ModelState::Running => GeneralState::Running,
+            ModelState::Stopped => GeneralState::Stopped,
             _ => GeneralState::Unknown,
         }
     }
@@ -255,6 +256,15 @@ pub struct MessageRnti {
     cell_rnti: HashMap<u64, u16>,
 }
 
+#[allow(dead_code)]
+#[derive(Clone, Debug, PartialEq, Default)]
+pub struct MessageMetric {
+    /// Timestamp when the metric was calculated (not sent!)
+    timestamp_us: u64,
+    /// Fair share send rate [bits/subframe] = [bits/ms]
+    fair_share_send_rate: u64,
+}
+
 /*  --------------  */
 /*   Logic Helper   */
 /*  --------------  */
diff --git a/src/logic/cell_sink.rs b/src/logic/model_handler.rs
similarity index 69%
rename from src/logic/cell_sink.rs
rename to src/logic/model_handler.rs
index a48a765..7c8a717 100644
--- a/src/logic/cell_sink.rs
+++ b/src/logic/model_handler.rs
@@ -4,62 +4,65 @@ use std::thread::{self, JoinHandle};
 use std::time::Duration;
 
 use anyhow::{anyhow, Result};
-use bus::BusReader;
+use bus::{BusReader, Bus};
 
 use crate::logic::{
     check_not_stopped, wait_until_running, MainState, MessageCellInfo, MessageDci, MessageRnti,
-    SinkState, DEFAULT_WORKER_SLEEP_US,
+    MessageMetric, ModelState, DEFAULT_WORKER_SLEEP_US,
 };
 use crate::util::determine_process_id;
 
-pub struct CellSinkArgs {
+pub struct ModelHandlerArgs {
     pub rx_app_state: BusReader<MainState>,
-    pub tx_sink_state: SyncSender<SinkState>,
+    pub tx_model_state: SyncSender<ModelState>,
     pub rx_cell_info: BusReader<MessageCellInfo>,
     pub rx_dci: BusReader<MessageDci>,
     pub rx_rnti: BusReader<MessageRnti>,
+    pub tx_metric: Bus<MessageMetric>,
 }
 
-pub fn deploy_cell_sink(mut args: CellSinkArgs) -> Result<JoinHandle<()>> {
+pub fn deploy_model_handler(mut args: ModelHandlerArgs) -> Result<JoinHandle<()>> {
     let thread = thread::spawn(move || {
         let _ = run(
             args.rx_app_state,
-            args.tx_sink_state,
+            args.tx_model_state,
             &mut args.rx_cell_info,
             &mut args.rx_dci,
             &mut args.rx_rnti,
+            &mut args.tx_metric,
         );
     });
     Ok(thread)
 }
 
-fn send_final_state(tx_sink_state: &SyncSender<SinkState>) -> Result<()> {
-    Ok(tx_sink_state.send(SinkState::Stopped)?)
+fn send_final_state(tx_model_state: &SyncSender<ModelState>) -> Result<()> {
+    Ok(tx_model_state.send(ModelState::Stopped)?)
 }
 
 fn wait_for_running(
     rx_app_state: &mut BusReader<MainState>,
-    tx_sink_state: &SyncSender<SinkState>,
+    tx_model_state: &SyncSender<ModelState>,
 ) -> Result<()> {
     match wait_until_running(rx_app_state) {
         Ok(_) => Ok(()),
         _ => {
-            send_final_state(tx_sink_state)?;
-            Err(anyhow!("[sink] Main did not send 'Running' message"))
+            send_final_state(tx_model_state)?;
+            Err(anyhow!("[model] Main did not send 'Running' message"))
         }
     }
 }
 
 fn run(
     mut rx_app_state: BusReader<MainState>,
-    tx_sink_state: SyncSender<SinkState>,
+    tx_model_state: SyncSender<ModelState>,
     rx_cell_info: &mut BusReader<MessageCellInfo>,
     rx_dci: &mut BusReader<MessageDci>,
     rx_rnti: &mut BusReader<MessageRnti>,
+    _tx_metric: &mut Bus<MessageMetric>,
 ) -> Result<()> {
-    tx_sink_state.send(SinkState::Running)?;
-    wait_for_running(&mut rx_app_state, &tx_sink_state)?;
-    print_info(&format!("[sink]: \t\tPID {:?}", determine_process_id()));
+    tx_model_state.send(ModelState::Running)?;
+    wait_for_running(&mut rx_app_state, &tx_model_state)?;
+    print_info(&format!("[model]: \t\tPID {:?}", determine_process_id()));
     let sleep_duration = Duration::from_micros(DEFAULT_WORKER_SLEEP_US);
 
     loop {
@@ -90,16 +93,16 @@ fn run(
         if let Some(rnti_msg) = new_rnti {
             if !rnti_msg.cell_rnti.is_empty() {
                 print_debug(&format!(
-                    "DEBUG [sink] new rnti {:#?}",
+                    "DEBUG [model] new rnti {:#?}",
                     rnti_msg.cell_rnti.get(&0).unwrap()
                 ));
             }
         }
 
-        // TODO: Consume rx_dci, rx_cell_info, and rx_rnti
         // TODO: -> Send combined message to some remote
+        //   tx_metrc.send(metrics)
     }
 
-    send_final_state(&tx_sink_state)?;
+    send_final_state(&tx_model_state)?;
     Ok(())
 }
diff --git a/src/main.rs b/src/main.rs
index 8b1eb8b..072f83c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -17,28 +17,28 @@ mod parse;
 mod util;
 mod math_util;
 
-use logic::cell_sink::{deploy_cell_sink, CellSinkArgs};
+use logic::model_handler::{deploy_model_handler, ModelHandlerArgs};
 use logic::cell_source::{deploy_cell_source, CellSourceArgs};
 use logic::ngscope_controller::{deploy_ngscope_controller, NgControlArgs};
 use logic::rnti_matcher::{deploy_rnti_matcher, RntiMatcherArgs};
-use logic::WorkerChannel;
+use logic::{WorkerChannel, MessageMetric, BUS_SIZE_METRIC};
 use logic::{
     GeneralState, MainState, MessageCellInfo, MessageDci, MessageRnti, NgControlState,
-    RntiMatcherState, SinkState, SourceState, WorkerState, BUS_SIZE_APP_STATE, BUS_SIZE_CELL_INFO,
+    RntiMatcherState, ModelState, SourceState, WorkerState, BUS_SIZE_APP_STATE, BUS_SIZE_CELL_INFO,
     BUS_SIZE_DCI, BUS_SIZE_RNTI, CHANNEL_SYNC_SIZE, WORKER_SLEEP_LONG_MS,
 };
 use parse::Arguments;
 use util::{determine_process_id, is_notifier, prepare_sigint_notifier, print_info, set_debug};
 
 struct CombinedReceivers {
-    pub sink: Receiver<SinkState>,
+    pub model: Receiver<ModelState>,
     pub source: Receiver<SourceState>,
     pub rntimatcher: Receiver<RntiMatcherState>,
     pub ngcontrol: Receiver<NgControlState>,
 }
 
 struct CombinedSenders {
-    pub sink: SyncSender<SinkState>,
+    pub model: SyncSender<ModelState>,
     pub source: SyncSender<SourceState>,
     pub rntimatcher: SyncSender<RntiMatcherState>,
     pub ngcontrol: SyncSender<NgControlState>,
@@ -47,7 +47,7 @@ struct CombinedSenders {
 impl CombinedReceivers {
     fn print_worker_messages(&self) {
         let _ = &self.source.worker_print_on_recv();
-        let _ = &self.sink.worker_print_on_recv();
+        let _ = &self.model.worker_print_on_recv();
         let _ = &self.ngcontrol.worker_print_on_recv();
         let _ = &self.rntimatcher.worker_print_on_recv();
     }
@@ -61,13 +61,15 @@ fn deploy_app(
     let mut tx_dci: Bus<MessageDci> = Bus::<MessageDci>::new(BUS_SIZE_DCI);
     let mut tx_cell_info: Bus<MessageCellInfo> = Bus::<MessageCellInfo>::new(BUS_SIZE_CELL_INFO);
     let mut tx_rnti: Bus<MessageRnti> = Bus::<MessageRnti>::new(BUS_SIZE_RNTI);
+    let tx_metric: Bus<MessageMetric> = Bus::<MessageMetric>::new(BUS_SIZE_METRIC);
 
-    let sink_args = CellSinkArgs {
+    let model_args = ModelHandlerArgs {
         rx_app_state: tx_app_state.add_rx(),
-        tx_sink_state: all_tx_states.sink,
+        tx_model_state: all_tx_states.model,
         rx_cell_info: tx_cell_info.add_rx(),
         rx_dci: tx_dci.add_rx(),
         rx_rnti: tx_rnti.add_rx(),
+        tx_metric,
     };
     let rntimatcher_args = RntiMatcherArgs {
         rx_app_state: tx_app_state.add_rx(),
@@ -93,7 +95,7 @@ fn deploy_app(
     let tasks: Vec<JoinHandle<()>> = vec![
         deploy_ngscope_controller(ngcontrol_args)?,
         deploy_cell_source(source_args)?,
-        deploy_cell_sink(sink_args)?,
+        deploy_model_handler(model_args)?,
         deploy_rnti_matcher(rntimatcher_args)?,
     ];
     Ok(tasks)
@@ -131,7 +133,7 @@ fn wait_all_running(
 ) -> Result<()> {
     print_info("[ ] waiting for all threads to become ready");
 
-    let mut waiting_for: HashSet<&str> = vec!["source", "sink", "rntimatcher", "ngcontrol"]
+    let mut waiting_for: HashSet<&str> = vec!["source", "model", "rntimatcher", "ngcontrol"]
         .into_iter()
         .collect();
 
@@ -146,9 +148,9 @@ fn wait_all_running(
                 waiting_for.remove("source");
             }
         }
-        if waiting_for.contains("sink") {
-            if let Ok(Some(_)) = check_running(&all_rx_states.sink) {
-                waiting_for.remove("sink");
+        if waiting_for.contains("model") {
+            if let Ok(Some(_)) = check_running(&all_rx_states.model) {
+                waiting_for.remove("model");
             }
         }
         if waiting_for.contains("rntimatcher") {
@@ -183,18 +185,18 @@ fn main() -> Result<(), Box<dyn Error>> {
     let sigint_notifier = prepare_sigint_notifier()?;
 
     let mut tx_app_state = Bus::<MainState>::new(BUS_SIZE_APP_STATE);
-    let (sink_tx, sink_rx) = sync_channel::<SinkState>(CHANNEL_SYNC_SIZE);
+    let (model_tx, model_rx) = sync_channel::<ModelState>(CHANNEL_SYNC_SIZE);
     let (source_tx, source_rx) = sync_channel::<SourceState>(CHANNEL_SYNC_SIZE);
     let (rntimatcher_tx, rntimatcher_rx) = sync_channel::<RntiMatcherState>(CHANNEL_SYNC_SIZE);
     let (ngcontrol_tx, ngcontrol_rx) = sync_channel::<NgControlState>(CHANNEL_SYNC_SIZE);
     let all_tx_states = CombinedSenders {
-        sink: sink_tx,
+        model: model_tx,
         source: source_tx,
         rntimatcher: rntimatcher_tx,
         ngcontrol: ngcontrol_tx,
     };
     let all_rx_states = CombinedReceivers {
-        sink: sink_rx,
+        model: model_rx,
         source: source_rx,
         rntimatcher: rntimatcher_rx,
         ngcontrol: ngcontrol_rx,