diff --git a/src/com/android/phone/satellite/accesscontrol/SatelliteAccessConfigurationParser.java b/src/com/android/phone/satellite/accesscontrol/SatelliteAccessConfigurationParser.java
new file mode 100644
index 0000000..0658279
--- /dev/null
+++ b/src/com/android/phone/satellite/accesscontrol/SatelliteAccessConfigurationParser.java
@@ -0,0 +1,392 @@
+/*
+ * Copyright (C) 2024 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.
+ */
+
+package com.android.phone.satellite.accesscontrol;
+
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.net.ParseException;
+import android.os.Build;
+import android.telephony.satellite.EarfcnRange;
+import android.telephony.satellite.SatelliteAccessConfiguration;
+import android.telephony.satellite.SatelliteInfo;
+import android.telephony.satellite.SatellitePosition;
+import android.util.Log;
+
+import com.android.internal.annotations.VisibleForTesting;
+
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.io.ByteArrayOutputStream;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.UUID;
+
+public class SatelliteAccessConfigurationParser {
+    private static final String TAG = "SatelliteAccessConfigurationParser";
+
+    public static final String SATELLITE_ACCESS_CONTROL_CONFIGS = "access_control_configs";
+    public static final String SATELLITE_CONFIG_ID = "config_id";
+    public static final String SATELLITE_INFOS = "satellite_infos";
+    public static final String SATELLITE_ID = "satellite_id";
+    public static final String SATELLITE_POSITION = "satellite_position";
+    public static final String SATELLITE_LONGITUDE = "longitude";
+    public static final String SATELLITE_ALTITUDE = "altitude";
+    public static final String SATELLITE_EARFCN_RANGES = "earfcn_ranges";
+    public static final String SATELLITE_START_EARFCN = "start_earfcn";
+    public static final String SATELLITE_END_EARFCN = "end_earfcn";
+    public static final String SATELLITE_BANDS = "bands";
+    public static final String SATELLITE_TAG_ID_LIST = "tag_ids";
+
+
+    /**
+     * Parses a JSON file containing satellite access configurations.
+     *
+     * @param fileName The name of the JSON file to parse.
+     * @return A map of satellite access configurations, keyed by config ID.
+     * @throws RuntimeException if the JSON file cannot be parsed or if a required field is missing.
+     */
+    @Nullable
+    public static Map<Integer, SatelliteAccessConfiguration> parse(@NonNull String fileName) {
+        logd("SatelliteAccessConfigurationParser: parse: " + fileName);
+        Map<Integer, SatelliteAccessConfiguration> satelliteAccessConfigurationMap;
+
+        try {
+            String jsonString = readJsonStringFromFile(fileName);
+            JSONObject satelliteAccessConfigJsonObject = new JSONObject(jsonString);
+            JSONArray configurationArrayJson = satelliteAccessConfigJsonObject.optJSONArray(
+                    SATELLITE_ACCESS_CONTROL_CONFIGS);
+
+            if (configurationArrayJson == null) {
+                loge("parse : failed to parse satellite access configurations json");
+                return null;
+            }
+
+            satelliteAccessConfigurationMap =
+                    parseSatelliteAccessConfigurations(configurationArrayJson);
+
+        } catch (JSONException | ParseException e) {
+            loge("Failed to parse satellite access configurations: " + e.getMessage());
+            throw new RuntimeException(e);
+        }
+
+        logd("satelliteAccessConfigurationMap= " + satelliteAccessConfigurationMap);
+        return satelliteAccessConfigurationMap;
+    }
+
+    private static void logd(String log) {
+        if (!Build.TYPE.equals("user")) {
+            Log.d(TAG, log);
+        }
+    }
+
+    private static void loge(String log) {
+        Log.e(TAG, log);
+    }
+
+    @NonNull
+    protected static List<Integer> parseSatelliteTagIdList(@NonNull JSONObject satelliteInfoJson) {
+        List<Integer> tagIdList = new ArrayList<>();
+        try {
+            JSONArray tagIdArray = satelliteInfoJson.optJSONArray(SATELLITE_TAG_ID_LIST);
+            tagIdList = parseIntegerList(tagIdArray);
+        } catch (JSONException e) {
+            loge("parseSatelliteInfo:  parsing is error");
+            return tagIdList;
+        }
+
+        logd("parseSatelliteBandList: " + tagIdList);
+        return tagIdList;
+    }
+
+    @Nullable
+    private static Map<Integer, SatelliteAccessConfiguration> parseSatelliteAccessConfigurations(
+            JSONArray satelliteAccessConfigurationJsonArray) throws JSONException {
+        Map<Integer, SatelliteAccessConfiguration> satelliteConfigMap = new HashMap<>();
+        if (satelliteAccessConfigurationJsonArray == null) {
+            loge("parseSatelliteAccessConfigurations: jsonArray is null, return null");
+            return null;
+        }
+
+        for (int i = 0; i < satelliteAccessConfigurationJsonArray.length(); i++) {
+            JSONObject satelliteAccessConfigurationJson =
+                    satelliteAccessConfigurationJsonArray.getJSONObject(i);
+
+            int configId = satelliteAccessConfigurationJson.optInt(SATELLITE_CONFIG_ID, -1);
+            if (!isRegionalConfigIdValid(configId)) {
+                loge("parseAccessControlConfigs: invalid config_id, return null");
+                return null;
+            }
+
+            JSONArray satelliteInfoJsonArray = satelliteAccessConfigurationJson
+                    .getJSONArray(SATELLITE_INFOS);
+            List<SatelliteInfo> satelliteInfoList = parseSatelliteInfoList(satelliteInfoJsonArray);
+            if (satelliteInfoList.isEmpty()) {
+                logd("parseAccessControlConfigs: satelliteInfoList is empty");
+            }
+
+            List<Integer> tagIdList = parseSatelliteTagIdList(satelliteAccessConfigurationJson);
+            if (satelliteInfoList.isEmpty() && tagIdList.isEmpty()) {
+                loge("parseAccessControlConfigs: satelliteInfoList is empty and tagId is null");
+                return null;
+            }
+
+            satelliteConfigMap.put(configId,
+                    new SatelliteAccessConfiguration(satelliteInfoList, tagIdList));
+        }
+
+        logd("parseSatelliteAccessConfigurations: " + satelliteConfigMap);
+        return satelliteConfigMap;
+    }
+
+    /**
+     * Checks if a regional configuration ID is valid.
+     * A valid regional configuration ID is a non-null integer that is greater than or equal to
+     * zero.
+     *
+     * @param configId The regional configuration ID to check.
+     * @return {@code true} if the ID is valid, {@code false} otherwise.
+     */
+    public static boolean isRegionalConfigIdValid(@Nullable Integer configId) {
+        return (configId != null && configId >= 0);
+    }
+
+    @Nullable
+    protected static UUID parseSatelliteId(@NonNull JSONObject satelliteInfoJson) {
+        String uuidString = satelliteInfoJson.optString(SATELLITE_ID, null);
+        UUID satelliteId;
+        if (uuidString != null) {
+            try {
+                satelliteId = UUID.fromString(uuidString);
+            } catch (IllegalArgumentException e) {
+                loge("getSatelliteId: invalid UUID format: " + uuidString + " | " + e.getMessage());
+                return null;
+            }
+        } else {
+            loge("getSatelliteId: satellite uuid is missing");
+            return null;
+        }
+
+        logd("getSatelliteId: satellite uuid is " + satelliteId);
+        return satelliteId;
+    }
+
+    @Nullable
+    protected static SatellitePosition parseSatellitePosition(
+            @NonNull JSONObject satelliteInfoJson) {
+        JSONObject jsonObject = satelliteInfoJson.optJSONObject(SATELLITE_POSITION);
+        if (jsonObject == null) {
+            loge("parseSatellitePosition: jsonObject is null");
+            return null;
+        }
+        SatellitePosition satellitePosition;
+        try {
+            double longitude = jsonObject.getDouble(SATELLITE_LONGITUDE);
+            double altitude = jsonObject.getDouble(SATELLITE_ALTITUDE);
+            if (isValidLongitude(longitude) && isValidAltitude(altitude)) {
+                satellitePosition = new SatellitePosition(longitude, altitude);
+            } else {
+                loge("parseSatellitePosition: invalid value: " + longitude + " | " + altitude);
+                return null;
+            }
+        } catch (JSONException e) {
+            loge("parseSatellitePosition: json parsing error " + e.getMessage());
+            return null;
+        }
+
+        logd("parseSatellitePosition: " + satellitePosition);
+        return satellitePosition;
+    }
+
+    @NonNull
+    protected static List<EarfcnRange> parseSatelliteEarfcnRangeList(
+            @NonNull JSONObject satelliteInfoJson) {
+        JSONArray earfcnRangesArray = satelliteInfoJson.optJSONArray(SATELLITE_EARFCN_RANGES);
+        List<EarfcnRange> earfcnRangeList = new ArrayList<>();
+        if (earfcnRangesArray == null) {
+            loge("parseSatelliteEarfcnRangeList: earfcn_ranges is missing");
+            return earfcnRangeList;
+        }
+
+        try {
+            for (int j = 0; j < earfcnRangesArray.length(); j++) {
+                JSONObject earfcnRangeJson = earfcnRangesArray.getJSONObject(j);
+                EarfcnRange earfcnRange = parseEarfcnRange(earfcnRangeJson);
+                if (earfcnRange == null) {
+                    loge("parseSatelliteEarfcnRangeList: earfcnRange is null, return empty list");
+                    earfcnRangeList.clear();
+                    return earfcnRangeList;
+                }
+                earfcnRangeList.add(earfcnRange);
+            }
+        } catch (JSONException e) {
+            loge("parseSatelliteEarfcnRangeList: earfcnRange json parsing error");
+            earfcnRangeList.clear();
+            return earfcnRangeList;
+        }
+        logd("parseSatelliteEarfcnRangeList: " + earfcnRangeList);
+        return earfcnRangeList;
+    }
+
+    @NonNull
+    protected static List<Integer> parseSatelliteBandList(@NonNull JSONObject satelliteInfoJson) {
+        List<Integer> bandList = new ArrayList<>();
+        try {
+            JSONArray bandArray = satelliteInfoJson.getJSONArray(SATELLITE_BANDS);
+            bandList = parseIntegerList(bandArray);
+        } catch (JSONException e) {
+            loge("parseSatelliteInfo: bands parsing is error");
+            return bandList;
+        }
+
+        logd("parseSatelliteBandList: " + bandList);
+        return bandList;
+    }
+
+    @NonNull
+    protected static List<SatelliteInfo> parseSatelliteInfoList(JSONArray satelliteInfojsonArray)
+            throws JSONException {
+        List<SatelliteInfo> satelliteInfoList = new ArrayList<>();
+        for (int i = 0; i < satelliteInfojsonArray.length(); i++) {
+            JSONObject SatelliteInfoJson = satelliteInfojsonArray.getJSONObject(i);
+            if (SatelliteInfoJson == null) {
+                satelliteInfoList.clear();
+                break;
+            }
+            UUID id = parseSatelliteId(SatelliteInfoJson);
+            SatellitePosition position = parseSatellitePosition(SatelliteInfoJson);
+            List<EarfcnRange> earfcnRangeList = parseSatelliteEarfcnRangeList(SatelliteInfoJson);
+            List<Integer> bandList = parseSatelliteBandList(SatelliteInfoJson);
+
+            if (id == null || (bandList.isEmpty() && earfcnRangeList.isEmpty())) {
+                loge("parseSatelliteInfo: id is " + id
+                        + " or both band list and earfcn range list are empty");
+                satelliteInfoList.clear();
+                return satelliteInfoList;
+            }
+
+            SatelliteInfo info = new SatelliteInfo(id, position, bandList, earfcnRangeList);
+            satelliteInfoList.add(info);
+        }
+        logd("parseSatelliteInfoList: " + satelliteInfoList);
+        return satelliteInfoList;
+    }
+
+    /**
+     * Load json file from the filePath
+     *
+     * @param jsonFilePath The file path of json file
+     * @return json string type json contents
+     */
+    @Nullable
+    @VisibleForTesting(visibility = VisibleForTesting.Visibility.PRIVATE)
+    public static String readJsonStringFromFile(@NonNull String jsonFilePath) {
+        logd("jsonFilePath is " + jsonFilePath);
+        String json = null;
+        try (InputStream inputStream = new FileInputStream(jsonFilePath);
+                ByteArrayOutputStream byteArrayStream = new ByteArrayOutputStream()) {
+            byte[] buffer = new byte[1024];
+            int length;
+            while ((length = inputStream.read(buffer)) != -1) {
+                byteArrayStream.write(buffer, 0, length);
+            }
+            json = byteArrayStream.toString(StandardCharsets.UTF_8);
+        } catch (FileNotFoundException e) {
+            loge("Error file " + jsonFilePath + " is not founded: " + e.getMessage());
+        } catch (IOException | NullPointerException e) {
+            loge("Error reading file " + jsonFilePath + ": " + e);
+        } finally {
+            logd("jsonString is " + json);
+        }
+        return json;
+    }
+
+    private static boolean isValidEarfcn(int earfcn) {
+        if (earfcn >= 0 && earfcn <= 65535) {
+            return true;
+        }
+        loge("isValidEarfcn: earfcn value is out of valid range: " + earfcn);
+        return false;
+    }
+
+    private static boolean isValidEarfcnRange(int start, int end) {
+        if (start <= end) {
+            return true;
+        }
+        loge("isValidEarfcnRange: earfcn range start " + start + " is bigger than end " + end);
+        return false;
+    }
+
+    @Nullable
+    private static EarfcnRange parseEarfcnRange(@Nullable JSONObject jsonObject) {
+        logd("parseEarfcnRange");
+        if (jsonObject == null) {
+            loge("parseEarfcnRange: jsonObject is null");
+            return null;
+        }
+        try {
+            int start = jsonObject.getInt(SATELLITE_START_EARFCN);
+            int end = jsonObject.getInt(SATELLITE_END_EARFCN);
+
+            if (isValidEarfcn(start) && isValidEarfcn(end) && isValidEarfcnRange(start, end)) {
+                return new EarfcnRange(start, end);
+            }
+
+            loge("parseEarfcnRange: earfcn value is not valid, return null");
+            return null;
+        } catch (JSONException e) {
+            loge("parseEarfcnRange: json parsing error: " + e.getMessage());
+            return null;
+        }
+    }
+
+    @NonNull
+    private static List<Integer> parseIntegerList(@Nullable JSONArray jsonArray)
+            throws JSONException {
+        List<Integer> intList = new ArrayList<>();
+        if (jsonArray == null) {
+            loge("parseIntegerList: jsonArray is null, return IntArray with empty");
+            return intList;
+        }
+        for (int i = 0; i < jsonArray.length(); i++) {
+            try {
+                intList.add(jsonArray.getInt(i));
+            } catch (JSONException e) {
+                loge("parseIntegerList: jsonArray parsing error: " + e.getMessage());
+                intList.clear();
+            }
+        }
+        logd("parseIntegerList: " + intList);
+        return intList;
+    }
+
+    private static boolean isValidLongitude(double longitude) {
+        return (longitude >= -180.0 && longitude <= 180.0);
+    }
+
+    private static boolean isValidAltitude(double altitude) {
+        return (altitude >= 0);
+    }
+}
diff --git a/src/com/android/phone/satellite/accesscontrol/SatelliteAccessController.java b/src/com/android/phone/satellite/accesscontrol/SatelliteAccessController.java
index d0d0e8f..9aca905 100644
--- a/src/com/android/phone/satellite/accesscontrol/SatelliteAccessController.java
+++ b/src/com/android/phone/satellite/accesscontrol/SatelliteAccessController.java
@@ -20,15 +20,16 @@
 import static android.telephony.satellite.SatelliteManager.KEY_SATELLITE_COMMUNICATION_ALLOWED;
 import static android.telephony.satellite.SatelliteManager.KEY_SATELLITE_PROVISIONED;
 import static android.telephony.satellite.SatelliteManager.KEY_SATELLITE_SUPPORTED;
-import static android.telephony.satellite.SatelliteManager.SATELLITE_DISALLOWED_REASON_NOT_SUPPORTED;
-import static android.telephony.satellite.SatelliteManager.SATELLITE_DISALLOWED_REASON_NOT_PROVISIONED;
-import static android.telephony.satellite.SatelliteManager.SATELLITE_DISALLOWED_REASON_NOT_IN_ALLOWED_REGION;
-import static android.telephony.satellite.SatelliteManager.SATELLITE_DISALLOWED_REASON_UNSUPPORTED_DEFAULT_MSG_APP;
 import static android.telephony.satellite.SatelliteManager.SATELLITE_DISALLOWED_REASON_LOCATION_DISABLED;
+import static android.telephony.satellite.SatelliteManager.SATELLITE_DISALLOWED_REASON_NOT_IN_ALLOWED_REGION;
+import static android.telephony.satellite.SatelliteManager.SATELLITE_DISALLOWED_REASON_NOT_PROVISIONED;
+import static android.telephony.satellite.SatelliteManager.SATELLITE_DISALLOWED_REASON_NOT_SUPPORTED;
+import static android.telephony.satellite.SatelliteManager.SATELLITE_DISALLOWED_REASON_UNSUPPORTED_DEFAULT_MSG_APP;
 import static android.telephony.satellite.SatelliteManager.SATELLITE_RESULT_INVALID_TELEPHONY_STATE;
 import static android.telephony.satellite.SatelliteManager.SATELLITE_RESULT_LOCATION_DISABLED;
 import static android.telephony.satellite.SatelliteManager.SATELLITE_RESULT_LOCATION_NOT_AVAILABLE;
 import static android.telephony.satellite.SatelliteManager.SATELLITE_RESULT_NOT_SUPPORTED;
+import static android.telephony.satellite.SatelliteManager.SATELLITE_RESULT_NO_RESOURCES;
 import static android.telephony.satellite.SatelliteManager.SATELLITE_RESULT_REQUEST_NOT_SUPPORTED;
 import static android.telephony.satellite.SatelliteManager.SATELLITE_RESULT_SUCCESS;
 
@@ -126,6 +127,7 @@
 import java.util.Locale;
 import java.util.Map;
 import java.util.Objects;
+import java.util.Optional;
 import java.util.Set;
 import java.util.UUID;
 import java.util.concurrent.ConcurrentHashMap;
@@ -184,7 +186,7 @@
     private static final int SATELLITE_DISALLOWED_REASON_NONE = -1;
     private static final List<Integer> DISALLOWED_REASONS_TO_BE_RESET =
             Arrays.asList(SATELLITE_DISALLOWED_REASON_NOT_IN_ALLOWED_REGION,
-            SATELLITE_DISALLOWED_REASON_LOCATION_DISABLED);
+                    SATELLITE_DISALLOWED_REASON_LOCATION_DISABLED);
 
     private static final HashMap<Integer, Pair<Integer, Integer>>
             SATELLITE_SOS_UNAVAILABLE_REASONS = new HashMap<>(Map.of(
@@ -229,6 +231,8 @@
     /** Feature flags to control behavior and errors. */
     @NonNull
     private final FeatureFlags mFeatureFlags;
+    @NonNull
+    private final Context mContext;
     @GuardedBy("mLock")
     @Nullable
     protected SatelliteOnDeviceAccessController mSatelliteOnDeviceAccessController;
@@ -276,6 +280,7 @@
     @Nullable
     private File mOverriddenSatelliteS2CellFile;
     private long mOverriddenLocationFreshDurationNanos;
+
     @GuardedBy("mLock")
     @NonNull
     private final Map<SatelliteOnDeviceAccessController.LocationToken, Integer>
@@ -299,14 +304,10 @@
     @GuardedBy("mLock")
     @Nullable
     protected Integer mNewRegionalConfigId = null;
-
-    /** Key: Config ID; Value: SatelliteAccessConfiguration */
     @NonNull
-    private HashMap<Integer, SatelliteAccessConfiguration> mSatelliteAccessConfigMap =
-            new HashMap<>();
-    @NonNull private final CarrierConfigManager mCarrierConfigManager;
-    @NonNull private final CarrierConfigManager.CarrierConfigChangeListener
-            mCarrierConfigChangeListener;
+    private final CarrierConfigManager mCarrierConfigManager;
+    @NonNull
+    private final CarrierConfigManager.CarrierConfigChangeListener mCarrierConfigChangeListener;
     /**
      * Key: Sub Id, Value: (key: Regional satellite config Id, value: SatelliteRegionalConfig
      * contains satellite config IDs and set of earfcns in the corresponding regions).
@@ -316,6 +317,11 @@
             mSatelliteRegionalConfigPerSubMap = new HashMap();
     @NonNull private final Object mRegionalSatelliteEarfcnsLock = new Object();
 
+    /** Key: Config ID; Value: SatelliteAccessConfiguration */
+    @GuardedBy("mLock")
+    @Nullable
+    private Map<Integer, SatelliteAccessConfiguration> mSatelliteAccessConfigMap;
+
     /** These are used for CTS test */
     private Path mCtsSatS2FilePath = null;
     protected static final String GOOGLE_US_SAN_SAT_S2_FILE_NAME = "google_us_san_sat_s2.dat";
@@ -428,6 +434,7 @@
             @Nullable SatelliteOnDeviceAccessController satelliteOnDeviceAccessController,
             @Nullable File s2CellFile) {
         super(looper);
+        mContext = context;
         if (isSatellitePersistentLoggingEnabled(context, featureFlags)) {
             mPersistentLogger = new PersistentLogger(
                     DropBoxManagerLoggerBackend.getInstance(context));
@@ -709,28 +716,29 @@
 
                 SatelliteAccessConfiguration satelliteAccessConfig = null;
                 synchronized (mLock) {
-                    if (isSatelliteCommunicationAllowed && isRegionalConfigIdValid(
-                            mRegionalConfigId)) {
+                    if (isSatelliteCommunicationAllowed && SatelliteAccessConfigurationParser
+                            .isRegionalConfigIdValid(mRegionalConfigId)) {
                         plogd("requestSatelliteAccessConfigurationForCurrentLocation : "
                                 + "mRegionalConfigId is " + mRegionalConfigId);
-                        satelliteAccessConfig =
-                                mSatelliteAccessConfigMap.get(mRegionalConfigId);
+                        satelliteAccessConfig = Optional.ofNullable(mSatelliteAccessConfigMap)
+                                .map(map -> map.get(mRegionalConfigId))
+                                .orElse(null);
                     }
                 }
                 plogd("requestSatelliteAccessConfigurationForCurrentLocation : "
                         + "satelliteAccessConfig is " + satelliteAccessConfig);
-                Bundle bundle = new Bundle();
-                bundle.putParcelable(KEY_SATELLITE_ACCESS_CONFIGURATION, satelliteAccessConfig);
-                result.send(resultCode, bundle);
+                if (satelliteAccessConfig == null) {
+                    result.send(SATELLITE_RESULT_NO_RESOURCES, null);
+                } else {
+                    Bundle bundle = new Bundle();
+                    bundle.putParcelable(KEY_SATELLITE_ACCESS_CONFIGURATION, satelliteAccessConfig);
+                    result.send(resultCode, bundle);
+                }
             }
         };
         requestIsCommunicationAllowedForCurrentLocation(internalResultReceiver, false);
     }
 
-    private boolean isRegionalConfigIdValid(@Nullable Integer configId) {
-        return (configId != null && configId >= 0);
-    }
-
     /**
      * This API should be used by only CTS tests to override the overlay configs of satellite
      * access controller.
@@ -1094,6 +1102,7 @@
             ploge("The satellite S2 cell file " + satelliteS2CellFileName + " does not exist");
             mSatelliteS2CellFile = null;
         }
+
         mLocationFreshDurationNanos = getSatelliteLocationFreshDurationFromOverlayConfig(context);
         mAccessControllerMetricsStats.setConfigDataSource(
                 SatelliteConstants.CONFIG_DATA_SOURCE_DEVICE_CONFIG);
@@ -1104,6 +1113,28 @@
         mLocationQueryThrottleIntervalNanos = getLocationQueryThrottleIntervalNanos(context);
     }
 
+    protected void loadSatelliteAccessConfigurationFromDeviceConfig() {
+        String satelliteConfigurationFileName =
+                getSatelliteConfigurationFileNameFromOverlayConfig(mContext);
+        loadSatelliteAccessConfigurationFromFile(satelliteConfigurationFileName);
+    }
+
+    protected void loadSatelliteAccessConfigurationFromFile(String fileName) {
+        logd("loadSatelliteAccessConfigurationFromFile: " + fileName);
+        if (!TextUtils.isEmpty(fileName)) {
+            try {
+                synchronized (mLock) {
+                    mSatelliteAccessConfigMap =
+                            SatelliteAccessConfigurationParser.parse(fileName);
+                }
+            } catch (Exception e) {
+                loge("loadSatelliteAccessConfigurationFromFile: failed load json file: " + e);
+            }
+        } else {
+            loge("loadSatelliteAccessConfigurationFromFile: fileName is empty");
+        }
+    }
+
     private void loadConfigUpdaterConfigs() {
         if (mSharedPreferences == null) {
             ploge("loadConfigUpdaterConfigs : mSharedPreferences is null");
@@ -1339,7 +1370,7 @@
     }
 
     private void sendSatelliteAllowResultToReceivers(int resultCode, Bundle resultData,
-                                                     boolean allowed) {
+            boolean allowed) {
         plogd("sendSatelliteAllowResultToReceivers : resultCode is " + resultCode);
         if (resultCode == SATELLITE_RESULT_SUCCESS) {
             updateCurrentSatelliteAllowedState(allowed);
@@ -1521,9 +1552,8 @@
         createUnavailableNotifications(context);
     }
 
-    private Notification createNotification(@NonNull Context context,
-                                            String title,
-                                            String content) {
+    private Notification createNotification(@NonNull Context context, String title,
+            String content) {
         Notification.Builder notificationBuilder = new Notification.Builder(context)
                 .setContentTitle(title)
                 .setContentText(content)
@@ -1939,7 +1969,9 @@
             if (!Objects.equals(mRegionalConfigId, mNewRegionalConfigId)) {
                 mRegionalConfigId = mNewRegionalConfigId;
                 notifyRegionalSatelliteConfigurationChanged(
-                        mSatelliteAccessConfigMap.get(mRegionalConfigId));
+                        Optional.ofNullable(mSatelliteAccessConfigMap)
+                                .map(map -> map.get(mRegionalConfigId))
+                                .orElse(null));
             }
         }
     }
@@ -2090,7 +2122,8 @@
      *                               {@link SatelliteOnDeviceAccessController} instance and the
      *                               device is using a user build.
      */
-    private boolean initSatelliteOnDeviceAccessController() throws IllegalStateException {
+    private boolean initSatelliteOnDeviceAccessController()
+            throws IllegalStateException {
         synchronized (mLock) {
             if (getSatelliteS2CellFile() == null) return false;
 
@@ -2107,6 +2140,7 @@
                 restartKeepOnDeviceAccessControllerResourcesTimer();
                 mS2Level = mSatelliteOnDeviceAccessController.getS2Level();
                 plogd("mS2Level=" + mS2Level);
+                loadSatelliteAccessConfigurationFromDeviceConfig();
             } catch (Exception ex) {
                 ploge("Got exception in creating an instance of SatelliteOnDeviceAccessController,"
                         + " ex=" + ex + ", sat s2 file="
@@ -2114,6 +2148,7 @@
                 reportAnomaly(UUID_CREATE_ON_DEVICE_ACCESS_CONTROLLER_EXCEPTION,
                         "Exception in creating on-device satellite access controller");
                 mSatelliteOnDeviceAccessController = null;
+                mSatelliteAccessConfigMap = null;
                 if (!mIsOverlayConfigOverridden) {
                     mSatelliteS2CellFile = null;
                 }
@@ -2134,6 +2169,7 @@
                     ploge("cleanupOnDeviceAccessControllerResources: ex=" + ex);
                 }
                 mSatelliteOnDeviceAccessController = null;
+                mSatelliteAccessConfigMap = null;
                 stopKeepOnDeviceAccessControllerResourcesTimer();
             }
         }
@@ -2232,6 +2268,28 @@
         return accessAllowed;
     }
 
+
+    @Nullable
+    protected String getSatelliteConfigurationFileNameFromOverlayConfig(
+            @NonNull Context context) {
+        String satelliteAccessControlInfoFile = null;
+
+        if (!mFeatureFlags.carrierRoamingNbIotNtn()) {
+            logd("mFeatureFlags: carrierRoamingNbIotNtn is disabled");
+            return satelliteAccessControlInfoFile;
+        }
+
+        try {
+            satelliteAccessControlInfoFile = context.getResources().getString(
+                    com.android.internal.R.string.satellite_access_config_file);
+        } catch (Resources.NotFoundException ex) {
+            loge("getSatelliteConfigurationFileNameFromOverlayConfig: got ex=" + ex);
+        }
+
+        logd("satelliteAccessControlInfoFile =" + satelliteAccessControlInfoFile);
+        return satelliteAccessControlInfoFile;
+    }
+
     @Nullable
     private static String getSatelliteS2CellFileFromOverlayConfig(@NonNull Context context) {
         String s2CellFile = null;
@@ -2461,7 +2519,9 @@
                 }
                 synchronized (mLock) {
                     SatelliteAccessConfiguration satelliteAccessConfig =
-                            mSatelliteAccessConfigMap.get(mRegionalConfigId);
+                            Optional.ofNullable(mSatelliteAccessConfigMap)
+                                    .map(map -> map.get(mRegionalConfigId))
+                                    .orElse(null);
                     callback.onSatelliteAccessConfigurationChanged(satelliteAccessConfig);
                     logd("registerForCommunicationAllowedStateChanged: satelliteAccessConfig: "
                             + satelliteAccessConfig + " of mRegionalConfigId: "
@@ -2500,9 +2560,9 @@
      * Returns integer array of disallowed reasons of satellite.
      *
      * @return Integer array of disallowed reasons of satellite.
-     *
      */
-    @NonNull public List<Integer> getSatelliteDisallowedReasons() {
+    @NonNull
+    public List<Integer> getSatelliteDisallowedReasons() {
         if (!mFeatureFlags.carrierRoamingNbIotNtn()) {
             plogd("getSatelliteDisallowedReasons: carrierRoamingNbIotNtn is disabled");
             return new ArrayList<>();
@@ -2517,7 +2577,6 @@
      * Registers for disallowed reasons change event from satellite service.
      *
      * @param callback The callback to handle disallowed reasons changed event.
-     *
      */
     public void registerForSatelliteDisallowedReasonsChanged(
             @NonNull ISatelliteDisallowedReasonsCallback callback) {
@@ -2551,7 +2610,7 @@
      *
      * @param callback The callback that was passed to
      *                 {@link #registerForSatelliteDisallowedReasonsChanged(
-     *                 ISatelliteDisallowedReasonsCallback)}.
+     *ISatelliteDisallowedReasonsCallback)}.
      */
     public void unregisterForSatelliteDisallowedReasonsChanged(
             @NonNull ISatelliteDisallowedReasonsCallback callback) {
@@ -2709,7 +2768,7 @@
         Rlog.w(TAG, log);
     }
 
-    private static void loge(@NonNull String log) {
+    protected static void loge(@NonNull String log) {
         Rlog.e(TAG, log);
     }
 
diff --git a/tests/src/com/android/phone/satellite/accesscontrol/SatelliteAccessConfigurationParserTest.java b/tests/src/com/android/phone/satellite/accesscontrol/SatelliteAccessConfigurationParserTest.java
new file mode 100644
index 0000000..d577a63
--- /dev/null
+++ b/tests/src/com/android/phone/satellite/accesscontrol/SatelliteAccessConfigurationParserTest.java
@@ -0,0 +1,314 @@
+/*
+ * Copyright (C) 2024 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.
+ */
+
+package com.android.phone.satellite.accesscontrol;
+
+import static com.android.phone.satellite.accesscontrol.SatelliteAccessConfigurationParser.SATELLITE_ACCESS_CONTROL_CONFIGS;
+import static com.android.phone.satellite.accesscontrol.SatelliteAccessConfigurationParser.SATELLITE_CONFIG_ID;
+import static com.android.phone.satellite.accesscontrol.SatelliteAccessConfigurationParser.SATELLITE_INFOS;
+import static com.android.phone.satellite.accesscontrol.SatelliteAccessConfigurationParser.isRegionalConfigIdValid;
+import static com.android.phone.satellite.accesscontrol.SatelliteAccessConfigurationParser.parseSatelliteBandList;
+import static com.android.phone.satellite.accesscontrol.SatelliteAccessConfigurationParser.parseSatelliteEarfcnRangeList;
+import static com.android.phone.satellite.accesscontrol.SatelliteAccessConfigurationParser.parseSatelliteId;
+import static com.android.phone.satellite.accesscontrol.SatelliteAccessConfigurationParser.parseSatelliteInfoList;
+import static com.android.phone.satellite.accesscontrol.SatelliteAccessConfigurationParser.parseSatellitePosition;
+import static com.android.phone.satellite.accesscontrol.SatelliteAccessConfigurationParser.parseSatelliteTagIdList;
+import static com.android.phone.satellite.accesscontrol.SatelliteAccessConfigurationParser.readJsonStringFromFile;
+
+import static junit.framework.Assert.assertFalse;
+import static junit.framework.Assert.assertNotNull;
+import static junit.framework.Assert.assertTrue;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+
+import android.content.Context;
+import android.telephony.satellite.EarfcnRange;
+import android.telephony.satellite.SatelliteAccessConfiguration;
+import android.telephony.satellite.SatelliteInfo;
+import android.telephony.satellite.SatellitePosition;
+import android.util.Log;
+
+import androidx.annotation.NonNull;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.platform.app.InstrumentationRegistry;
+
+import org.json.JSONArray;
+import org.json.JSONObject;
+import org.junit.After;
+import org.junit.AfterClass;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.MockitoAnnotations;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.UUID;
+
+/** Unit test for {@link SatelliteAccessConfigurationParser} */
+@RunWith(AndroidJUnit4.class)
+public class SatelliteAccessConfigurationParserTest {
+    private static final String TAG = "SatelliteAccessConfigurationParserTest";
+
+    private static final String TEST_FILE_NAME = "test.json";
+    private static final String TEST_INVALID_FILE_NAME = "nonexistent_file.json";
+
+    private static final String TEST_SATELLITE_UUID1 = "5d0cc4f8-9223-4196-ad7a-803002db7af7";
+    private static final String TEST_SATELLITE_UUID2 = "0d30312e-a73f-444d-b99b-a893dfb42ee9";
+    private static final String TEST_SATELLITE_UUID3 = "01a0b0ca-11bc-4777-87ae-f39afbbec1e9";
+
+    private static final String VALID_JSON_STRING =
+            """
+            {
+             "access_control_configs": [
+               {
+                 "config_id": 123,
+                 "satellite_infos": [
+                   {
+                     "satellite_id": "5d0cc4f8-9223-4196-ad7a-803002db7af7",
+                     "satellite_position": {
+                       "longitude": 45.5,
+                       "altitude": 35786000
+                     },
+                     "bands": [
+                       1234,
+                       5678
+                     ],
+                     "earfcn_ranges": [
+                       {
+                         "start_earfcn": 1500,
+                         "end_earfcn": 1800
+                       }
+                     ]
+                   },
+                   {
+                     "satellite_id": "0d30312e-a73f-444d-b99b-a893dfb42ee9",
+                     "satellite_position": {
+                       "longitude": -120.3,
+                       "altitude": 35786000
+                     },
+                     "bands": [
+                       3456,
+                       7890
+                     ],
+                     "earfcn_ranges": [
+                       {
+                         "start_earfcn": 2000,
+                         "end_earfcn": 2300
+                       }
+                     ]
+                   }
+                 ],
+                 "tag_ids": [
+                   7,
+                   10
+                 ]
+               },
+               {
+                 "config_id": 890,
+                 "satellite_infos": [
+                   {
+                     "satellite_id": "01a0b0ca-11bc-4777-87ae-f39afbbec1e9",
+                     "satellite_position": {
+                       "longitude": -120,
+                       "altitude": 1234567
+                     },
+                     "bands": [
+                       13579,
+                       24680
+                     ],
+                     "earfcn_ranges": [
+                       {
+                         "start_earfcn": 6420,
+                         "end_earfcn": 15255
+                       }
+                     ]
+                   }
+                 ],
+                 "tag_ids": [
+                   6420,
+                   15255
+                 ]
+               }
+             ]
+             }
+            """;
+
+
+    // Mandatory : config_id ( >= 0)
+    // SatelliteInfoList : NonNull
+    // UUID (0-9, a-f and hyphen : '_' and 'z' are invalid)
+    // longitude (-180 ~ 180)
+    // altitude ( >= 0)
+    private static final String INVALID_JSON_STRING =
+            """
+            {
+              "access_control_configs": [
+                {
+                  "config_id": -100,
+                  "satellite_infos": [
+                    {
+                      "satellite_id": "01z0b0ca-11bc-4777_87ae-f39afbbec1e9",
+                      "satellite_position": {
+                        "longitude": -181,
+                        "altitude": -1
+                      },
+                      "earfcn_ranges": [
+                        {
+                          "start_earfcn": -1,
+                          "end_earfcn": 65536
+                        }
+                      ]
+                    }
+                  ]
+                }
+              ]
+            }
+            """;
+
+    @Before
+    public void setUp() throws Exception {
+        Log.d(TAG, "setUp");
+        MockitoAnnotations.initMocks(this);
+    }
+
+    @After
+    public void tearDown() throws Exception {
+        Log.d(TAG, "tearDown");
+    }
+
+    @AfterClass
+    public static void afterClass() throws Exception {
+    }
+
+    @BeforeClass
+    public static void beforeClass() throws Exception {
+    }
+
+    private static File createTestJsonFile(@NonNull String content) throws Exception {
+        Log.d(TAG, "createTestJsonFile");
+        Context context = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        File testFile = new File(context.getCacheDir(), TEST_FILE_NAME);
+        try (FileOutputStream fos = new FileOutputStream(testFile)) {
+            fos.write(content.getBytes(StandardCharsets.UTF_8));
+        }
+        return testFile;
+    }
+
+    @Test
+    public void testLoadJsonFile() throws Exception {
+        Log.d(TAG, "testLoadJsonFile");
+        assertNull(readJsonStringFromFile(TEST_INVALID_FILE_NAME));
+        assertNull(readJsonStringFromFile(null));
+
+        File file = createTestJsonFile(VALID_JSON_STRING);
+        assertEquals(VALID_JSON_STRING, readJsonStringFromFile(file.getPath()));
+
+        assertTrue(file.delete());
+    }
+
+
+    private SatelliteInfo getSatelliteInfo(UUID id, SatellitePosition position,
+            List<Integer> bandList, List<EarfcnRange> rangeList) {
+        return new SatelliteInfo(id, position, bandList, rangeList);
+    }
+
+    private Map<Integer, SatelliteAccessConfiguration> getExpectedMap() {
+        List<SatelliteInfo> satelliteInfoList1 = new ArrayList<>();
+        satelliteInfoList1.add(
+                getSatelliteInfo(UUID.fromString(TEST_SATELLITE_UUID1),
+                        new SatellitePosition(45.5, 35786000),
+                        List.of(1234, 5678),
+                        new ArrayList<>(List.of(new EarfcnRange(1500, 1800)))
+                ));
+        satelliteInfoList1.add(
+                getSatelliteInfo(UUID.fromString(TEST_SATELLITE_UUID2),
+                        new SatellitePosition(-120.3, 35786000),
+                        List.of(3456, 7890),
+                        new ArrayList<>(List.of(new EarfcnRange(2000, 2300)))
+                ));
+
+        List<Integer> tagIdList1 = List.of(7, 10);
+        SatelliteAccessConfiguration satelliteAccessConfiguration1 =
+                new SatelliteAccessConfiguration(satelliteInfoList1, tagIdList1);
+
+        HashMap<Integer, SatelliteAccessConfiguration> expectedResult = new HashMap<>();
+        expectedResult.put(123, satelliteAccessConfiguration1);
+
+        List<SatelliteInfo> satelliteInfoList2 = new ArrayList<>();
+        List<Integer> tagIdList2 = List.of(6420, 15255);
+        satelliteInfoList2.add(
+                getSatelliteInfo(UUID.fromString(TEST_SATELLITE_UUID3),
+                        new SatellitePosition(-120, 1234567),
+                        List.of(13579, 24680),
+                        new ArrayList<>(List.of(new EarfcnRange(6420, 15255)))
+                ));
+        SatelliteAccessConfiguration satelliteAccessConfiguration2 =
+                new SatelliteAccessConfiguration(satelliteInfoList2, tagIdList2);
+        expectedResult.put(890, satelliteAccessConfiguration2);
+        return expectedResult;
+    }
+
+
+    @Test
+    public void testParsingValidSatelliteAccessConfiguration() throws Exception {
+        Log.d(TAG, "testParsingValidSatelliteAccessConfiguration");
+        File file = createTestJsonFile(VALID_JSON_STRING);
+        assertEquals(getExpectedMap(),
+                SatelliteAccessConfigurationParser.parse(file.getCanonicalPath()));
+    }
+
+    @Test
+    public void testParsingInvalidSatelliteAccessConfiguration() throws Exception {
+        Log.d(TAG, "testParsingInvalidSatelliteAccessConfiguration");
+        File file = createTestJsonFile(INVALID_JSON_STRING);
+        String jsonString = readJsonStringFromFile(file.getCanonicalPath());
+        JSONObject satelliteAccessConfigJsonObject = new JSONObject(jsonString);
+        JSONArray configurationArrayJson = satelliteAccessConfigJsonObject.optJSONArray(
+                SATELLITE_ACCESS_CONTROL_CONFIGS);
+
+        for (int i = 0; i < configurationArrayJson.length(); i++) {
+            JSONObject configJson = configurationArrayJson.getJSONObject(i);
+
+            int configId = configJson.optInt(SATELLITE_CONFIG_ID, -1);
+            assertFalse(isRegionalConfigIdValid(configId));
+
+            JSONArray satelliteInfoArray = configJson.getJSONArray(SATELLITE_INFOS);
+            List<SatelliteInfo> satelliteInfoList = parseSatelliteInfoList(satelliteInfoArray);
+            assertNotNull(satelliteInfoList);
+            assertTrue(satelliteInfoList.isEmpty());
+
+            for (int j = 0; j < satelliteInfoArray.length(); j++) {
+                JSONObject infoJson = satelliteInfoArray.getJSONObject(i);
+                assertNull(parseSatelliteId(infoJson));
+                assertNull(parseSatellitePosition(infoJson));
+                assertTrue(parseSatelliteEarfcnRangeList(infoJson).isEmpty());
+                assertNotNull(parseSatelliteBandList(infoJson));
+                assertEquals(0, parseSatelliteBandList(infoJson).size());
+            }
+
+            List<Integer> tagIdList = parseSatelliteTagIdList(configJson);
+            assertNotNull(tagIdList);
+        }
+    }
+}
diff --git a/tests/src/com/android/phone/satellite/accesscontrol/SatelliteAccessControllerTest.java b/tests/src/com/android/phone/satellite/accesscontrol/SatelliteAccessControllerTest.java
index b388954..c8013d6 100644
--- a/tests/src/com/android/phone/satellite/accesscontrol/SatelliteAccessControllerTest.java
+++ b/tests/src/com/android/phone/satellite/accesscontrol/SatelliteAccessControllerTest.java
@@ -27,6 +27,7 @@
 import static android.telephony.satellite.SatelliteManager.SATELLITE_RESULT_LOCATION_NOT_AVAILABLE;
 import static android.telephony.satellite.SatelliteManager.SATELLITE_RESULT_MODEM_ERROR;
 import static android.telephony.satellite.SatelliteManager.SATELLITE_RESULT_NOT_SUPPORTED;
+import static android.telephony.satellite.SatelliteManager.SATELLITE_RESULT_NO_RESOURCES;
 import static android.telephony.satellite.SatelliteManager.SATELLITE_RESULT_REQUEST_NOT_SUPPORTED;
 import static android.telephony.satellite.SatelliteManager.SATELLITE_RESULT_SUCCESS;
 
@@ -619,10 +620,9 @@
 
         verify(mockResultReceiver, times(1)).send(resultCodeCaptor.capture(),
                 bundleCaptor.capture());
-        assertEquals(SATELLITE_RESULT_SUCCESS, (int) resultCodeCaptor.getValue());
-        assertTrue(bundleCaptor.getValue().containsKey(KEY_SATELLITE_ACCESS_CONFIGURATION));
-        assertNull(bundleCaptor.getValue().getParcelable(KEY_SATELLITE_ACCESS_CONFIGURATION,
-                SatelliteAccessConfiguration.class));
+        assertEquals(SATELLITE_RESULT_NO_RESOURCES, (int) resultCodeCaptor.getValue());
+        assertNull(bundleCaptor.getValue());
+
         verify(mockSatelliteAllowedStateCallback, times(1))
                 .onSatelliteAccessConfigurationChanged(
                         satelliteAccessConfigurationCaptor.capture());
@@ -1410,6 +1410,33 @@
     }
 
     @Test
+    public void testLoadSatelliteAccessConfigurationFromDeviceConfig() {
+        when(mMockFeatureFlags.oemEnabledSatelliteFlag()).thenReturn(false);
+        assertNull(mSatelliteAccessControllerUT
+                .getSatelliteConfigurationFileNameFromOverlayConfig(mMockContext));
+
+        when(mMockFeatureFlags.oemEnabledSatelliteFlag()).thenReturn(true);
+        when(mMockContext.getResources()).thenReturn(mMockResources);
+        when(mMockResources
+                .getString(eq(com.android.internal.R.string.satellite_access_config_file)))
+                .thenReturn("test_satellite_file.json");
+        assertEquals("test_satellite_file.json", mSatelliteAccessControllerUT
+                .getSatelliteConfigurationFileNameFromOverlayConfig(mMockContext));
+
+        when(mMockResources
+                .getString(eq(com.android.internal.R.string.satellite_access_config_file)))
+                .thenReturn(null);
+        assertNull(mSatelliteAccessControllerUT
+                .getSatelliteConfigurationFileNameFromOverlayConfig(mMockContext));
+        try {
+            mSatelliteAccessControllerUT.loadSatelliteAccessConfigurationFromDeviceConfig();
+        } catch (Exception e) {
+            fail("Unexpected exception thrown: " + e.getMessage());
+        }
+    }
+
+
+    @Test
     public void testUpdateSatelliteConfigData() throws Exception {
         verify(mMockSatelliteController).registerForConfigUpdateChanged(
                 mConfigUpdateHandlerCaptor.capture(), mConfigUpdateIntCaptor.capture(),