diff --git a/src/main/java/org.onosproject.xran/identifiers/LinkId.java b/src/main/java/org.onosproject.xran/identifiers/LinkId.java
new file mode 100644
index 0000000..8531d78
--- /dev/null
+++ b/src/main/java/org.onosproject.xran/identifiers/LinkId.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2015-present Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.xran.identifiers;
+
+import org.onosproject.xran.codecs.api.ECGI;
+import org.onosproject.xran.codecs.api.MMEUES1APID;
+import org.onosproject.xran.entities.RnibCell;
+import org.onosproject.xran.entities.RnibUe;
+
+public class LinkId {
+    private ECGI source;
+    private MMEUES1APID destination;
+
+    public LinkId(ECGI source, MMEUES1APID destination) {
+        this.source = source;
+        this.destination = destination;
+    }
+
+    public static LinkId valueOf(RnibCell cell, RnibUe ue) {
+        return new LinkId(cell.getEcgi(), ue.getMmeS1apId());
+    }
+
+    public ECGI getSource() {
+        return source;
+    }
+
+    public void setSource(ECGI source) {
+        this.source = source;
+    }
+
+    public MMEUES1APID getDestination() {
+        return destination;
+    }
+
+    public void setDestination(MMEUES1APID destination) {
+        this.destination = destination;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        return this == o ||
+                o != null &&
+                        o instanceof LinkId &&
+                        destination.equals(((LinkId) o).destination) &&
+                        source.equals(((LinkId) o).source);
+
+    }
+
+    @Override
+    public int hashCode() {
+        int result = source.hashCode();
+        result = 31 * result + destination.hashCode();
+        return result;
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("{\n")
+                .append(source != null ? "\"cell\":" + source : "")
+                .append(destination != null ? ",\n\"ue\":" + destination : "")
+                .append("\n}\n");
+        return sb.toString();
+    }
+}
diff --git a/src/main/java/org.onosproject.xran/identifiers/package-info.java b/src/main/java/org.onosproject.xran/identifiers/package-info.java
new file mode 100644
index 0000000..421cee2
--- /dev/null
+++ b/src/main/java/org.onosproject.xran/identifiers/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2015-present Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Created by dimitris on 7/22/17.
+ */
+package org.onosproject.xran.identifiers;
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