diff --git a/gnss/2.0/default/GnssMeasurement.cpp b/gnss/2.0/default/GnssMeasurement.cpp
index fbcdc12..dc23db3 100644
--- a/gnss/2.0/default/GnssMeasurement.cpp
+++ b/gnss/2.0/default/GnssMeasurement.cpp
@@ -13,8 +13,10 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+#define LOG_TAG "GnssMeasurement"
 
 #include "GnssMeasurement.h"
+#include <log/log.h>
 
 namespace android {
 namespace hardware {
@@ -22,6 +24,18 @@
 namespace V2_0 {
 namespace implementation {
 
+using GnssConstellationType = V1_0::GnssConstellationType;
+using GnssMeasurementFlags = V1_0::IGnssMeasurementCallback::GnssMeasurementFlags;
+using GnssMeasurementState = V1_0::IGnssMeasurementCallback::GnssMeasurementState;
+
+sp<V2_0::IGnssMeasurementCallback> GnssMeasurement::sCallback = nullptr;
+
+GnssMeasurement::GnssMeasurement() : mMinIntervalMillis(1000) {}
+
+GnssMeasurement::~GnssMeasurement() {
+    stop();
+}
+
 // Methods from V1_0::IGnssMeasurement follow.
 Return<V1_0::IGnssMeasurement::GnssMeasurementStatus> GnssMeasurement::setCallback(
     const sp<V1_0::IGnssMeasurementCallback>&) {
@@ -30,7 +44,9 @@
 }
 
 Return<void> GnssMeasurement::close() {
-    // TODO implement
+    std::unique_lock<std::mutex> lock(mMutex);
+    stop();
+    sCallback = nullptr;
     return Void();
 }
 
@@ -43,17 +59,89 @@
 
 // Methods from V2_0::IGnssMeasurement follow.
 Return<V1_0::IGnssMeasurement::GnssMeasurementStatus> GnssMeasurement::setCallback_2_0(
-    const sp<V2_0::IGnssMeasurementCallback>&, bool) {
-    // TODO implement
-    return V1_0::IGnssMeasurement::GnssMeasurementStatus{};
+    const sp<V2_0::IGnssMeasurementCallback>& callback, bool) {
+    std::unique_lock<std::mutex> lock(mMutex);
+    sCallback = callback;
+
+    if (mIsActive) {
+        ALOGW("GnssMeasurement callback already set. Resetting the callback...");
+        stop();
+    }
+    start();
+
+    return V1_0::IGnssMeasurement::GnssMeasurementStatus::SUCCESS;
 }
 
-// Methods from ::android::hidl::base::V1_0::IBase follow.
+void GnssMeasurement::start() {
+    mIsActive = true;
+    mThread = std::thread([this]() {
+        while (mIsActive == true) {
+            auto measurement = this->getMockMeasurement();
+            this->reportMeasurement(measurement);
 
-// IGnssMeasurement* HIDL_FETCH_IGnssMeasurement(const char* /* name */) {
-// return new GnssMeasurement();
-//}
-//
+            std::this_thread::sleep_for(std::chrono::milliseconds(mMinIntervalMillis));
+        }
+    });
+}
+
+void GnssMeasurement::stop() {
+    mIsActive = false;
+    if (mThread.joinable()) {
+        mThread.join();
+    }
+}
+
+GnssData GnssMeasurement::getMockMeasurement() {
+    V1_0::IGnssMeasurementCallback::GnssMeasurement measurement_1_0 = {
+        .flags = (uint32_t)GnssMeasurementFlags::HAS_CARRIER_FREQUENCY,
+        .svid = (int16_t)6,
+        .constellation = GnssConstellationType::GLONASS,
+        .timeOffsetNs = 0.0,
+        .state = GnssMeasurementState::STATE_CODE_LOCK | GnssMeasurementState::STATE_BIT_SYNC |
+                 GnssMeasurementState::STATE_SUBFRAME_SYNC |
+                 GnssMeasurementState::STATE_TOW_DECODED |
+                 GnssMeasurementState::STATE_GLO_STRING_SYNC |
+                 GnssMeasurementState::STATE_GLO_TOD_DECODED,
+        .receivedSvTimeInNs = 8195997131077,
+        .receivedSvTimeUncertaintyInNs = 15,
+        .cN0DbHz = 30.0,
+        .pseudorangeRateMps = -484.13739013671875,
+        .pseudorangeRateUncertaintyMps = 1.0379999876022339,
+        .accumulatedDeltaRangeState = (uint32_t)
+            V1_0::IGnssMeasurementCallback::GnssAccumulatedDeltaRangeState::ADR_STATE_UNKNOWN,
+        .accumulatedDeltaRangeM = 0.0,
+        .accumulatedDeltaRangeUncertaintyM = 0.0,
+        .carrierFrequencyHz = 1.59975e+09,
+        .multipathIndicator =
+            V1_0::IGnssMeasurementCallback::GnssMultipathIndicator::INDICATOR_UNKNOWN};
+    V1_1::IGnssMeasurementCallback::GnssMeasurement measurement_1_1 = {.v1_0 = measurement_1_0};
+    V2_0::IGnssMeasurementCallback::GnssMeasurement measurement_2_0 = {
+        .v1_1 = measurement_1_1,
+        .codeType = IGnssMeasurementCallback::GnssMeasurementCodeType::CODE_TYPE_C};
+
+    hidl_vec<IGnssMeasurementCallback::GnssMeasurement> measurements(1);
+    measurements[0] = measurement_2_0;
+    V1_0::IGnssMeasurementCallback::GnssClock clock = {.timeNs = 2713545000000,
+                                                       .fullBiasNs = -1226701900521857520,
+                                                       .biasNs = 0.59689998626708984,
+                                                       .biasUncertaintyNs = 47514.989972114563,
+                                                       .driftNsps = -51.757811607455452,
+                                                       .driftUncertaintyNsps = 310.64968328491528,
+                                                       .hwClockDiscontinuityCount = 1};
+    GnssData gnssData = {.measurements = measurements, .clock = clock};
+    return gnssData;
+}
+
+void GnssMeasurement::reportMeasurement(const GnssData& data) {
+    ALOGD("reportMeasurement()");
+    std::unique_lock<std::mutex> lock(mMutex);
+    if (sCallback == nullptr) {
+        ALOGE("%s: GnssMeasurement::sCallback is null.", __func__);
+        return;
+    }
+    sCallback->gnssMeasurementCb_2_0(data);
+}
+
 }  // namespace implementation
 }  // namespace V2_0
 }  // namespace gnss