diff --git a/gnss/3.0/default/Gnss.h b/gnss/3.0/default/Gnss.h
new file mode 100644
index 0000000..7ae562a
--- /dev/null
+++ b/gnss/3.0/default/Gnss.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * 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.
+ */
+
+#pragma once
+
+#include <android/hardware/gnss/3.0/IGnss.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+#include <atomic>
+#include <mutex>
+#include <thread>
+#include "v2_1/GnssTemplate.h"
+
+namespace android::hardware::gnss::V3_0::implementation {
+
+using ::android::sp;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::gnss::common::implementation::GnssTemplate;
+
+struct Gnss : public GnssTemplate<IGnss> {
+    Gnss(){};
+    ~Gnss(){};
+
+    // Methods from V3_0::IGnss follow.
+    Return<sp<V3_0::IGnssPsds>> getExtensionPsds() override;
+};
+
+}  // namespace android::hardware::gnss::V3_0::implementation