diff --git a/gnss/1.1/default/Gnss.cpp b/gnss/1.1/default/Gnss.cpp
new file mode 100644
index 0000000..308ba70
--- /dev/null
+++ b/gnss/1.1/default/Gnss.cpp
@@ -0,0 +1,147 @@
+#define LOG_TAG "Gnss"
+
+#include "Gnss.h"
+#include <log/log.h>
+#include "GnssConfiguration.h"
+#include "GnssMeasurement.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_1 {
+namespace implementation {
+
+// Methods from ::android::hardware::gnss::V1_0::IGnss follow.
+Return<bool> Gnss::setCallback(const sp<::android::hardware::gnss::V1_0::IGnssCallback>&) {
+    // TODO implement
+    return bool{};
+}
+
+Return<bool> Gnss::start() {
+    // TODO implement
+    return bool{};
+}
+
+Return<bool> Gnss::stop() {
+    // TODO implement
+    return bool{};
+}
+
+Return<void> Gnss::cleanup() {
+    // TODO implement
+    return Void();
+}
+
+Return<bool> Gnss::injectTime(int64_t, int64_t, int32_t) {
+    // TODO implement
+    return bool{};
+}
+
+Return<bool> Gnss::injectLocation(double, double, float) {
+    // TODO implement
+    return bool{};
+}
+
+Return<void> Gnss::deleteAidingData(::android::hardware::gnss::V1_0::IGnss::GnssAidingData) {
+    // TODO implement
+    return Void();
+}
+
+Return<bool> Gnss::setPositionMode(::android::hardware::gnss::V1_0::IGnss::GnssPositionMode,
+                                   ::android::hardware::gnss::V1_0::IGnss::GnssPositionRecurrence,
+                                   uint32_t, uint32_t, uint32_t) {
+    // TODO implement
+    return bool{};
+}
+
+Return<sp<::android::hardware::gnss::V1_0::IAGnssRil>> Gnss::getExtensionAGnssRil() {
+    // TODO implement
+    return ::android::sp<::android::hardware::gnss::V1_0::IAGnssRil>{};
+}
+
+Return<sp<::android::hardware::gnss::V1_0::IGnssGeofencing>> Gnss::getExtensionGnssGeofencing() {
+    // TODO implement
+    return ::android::sp<::android::hardware::gnss::V1_0::IGnssGeofencing>{};
+}
+
+Return<sp<::android::hardware::gnss::V1_0::IAGnss>> Gnss::getExtensionAGnss() {
+    // TODO implement
+    return ::android::sp<::android::hardware::gnss::V1_0::IAGnss>{};
+}
+
+Return<sp<::android::hardware::gnss::V1_0::IGnssNi>> Gnss::getExtensionGnssNi() {
+    // TODO implement
+    return ::android::sp<::android::hardware::gnss::V1_0::IGnssNi>{};
+}
+
+Return<sp<::android::hardware::gnss::V1_0::IGnssMeasurement>> Gnss::getExtensionGnssMeasurement() {
+    // TODO implement
+    return new GnssMeasurement();
+}
+
+Return<sp<::android::hardware::gnss::V1_0::IGnssNavigationMessage>>
+Gnss::getExtensionGnssNavigationMessage() {
+    // TODO implement
+    return ::android::sp<::android::hardware::gnss::V1_0::IGnssNavigationMessage>{};
+}
+
+Return<sp<::android::hardware::gnss::V1_0::IGnssXtra>> Gnss::getExtensionXtra() {
+    // TODO implement
+    return ::android::sp<::android::hardware::gnss::V1_0::IGnssXtra>{};
+}
+
+Return<sp<::android::hardware::gnss::V1_0::IGnssConfiguration>>
+Gnss::getExtensionGnssConfiguration() {
+    // TODO implement
+    return new GnssConfiguration();
+}
+
+Return<sp<::android::hardware::gnss::V1_0::IGnssDebug>> Gnss::getExtensionGnssDebug() {
+    // TODO implement
+    return ::android::sp<::android::hardware::gnss::V1_0::IGnssDebug>{};
+}
+
+Return<sp<::android::hardware::gnss::V1_0::IGnssBatching>> Gnss::getExtensionGnssBatching() {
+    // TODO implement
+    return ::android::sp<::android::hardware::gnss::V1_0::IGnssBatching>{};
+}
+
+// Methods from ::android::hardware::gnss::V1_1::IGnss follow.
+Return<bool> Gnss::setCallback_1_1(const sp<::android::hardware::gnss::V1_1::IGnssCallback>&) {
+    ALOGI("Gnss::setCallback_1_1");
+    // TODO implement
+    return bool{};
+}
+
+Return<bool> Gnss::setPositionMode_1_1(
+    ::android::hardware::gnss::V1_0::IGnss::GnssPositionMode,
+    ::android::hardware::gnss::V1_0::IGnss::GnssPositionRecurrence, uint32_t, uint32_t, uint32_t,
+    bool) {
+    // TODO implement
+    return bool{};
+}
+
+Return<sp<::android::hardware::gnss::V1_1::IGnssConfiguration>>
+Gnss::getExtensionGnssConfiguration_1_1() {
+    // TODO implement
+    return new GnssConfiguration();
+}
+
+Return<sp<::android::hardware::gnss::V1_1::IGnssMeasurement>>
+Gnss::getExtensionGnssMeasurement_1_1() {
+    // TODO implement
+    return new GnssMeasurement();
+}
+
+Return<bool> Gnss::injectBestLocation(const ::android::hardware::gnss::V1_0::GnssLocation&) {
+    // TODO implement
+    return bool{};
+}
+
+// Methods from ::android::hidl::base::V1_0::IBase follow.
+
+}  // namespace implementation
+}  // namespace V1_1
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android