Merge "Allow GSM RSSI levels to be customized by CarrierConfig" (b71dc1e6) · Commits · e / os / android_frameworks_base

telephony/java/android/telephony/CarrierConfigManager.java

+20 −0

Original line number	Diff line number	Diff line
		@@ -2598,6 +2598,19 @@ public class CarrierConfigManager {
		public static final String KEY_IS_OPPORTUNISTIC_SUBSCRIPTION_BOOL =
		"key_is_opportunistic_subscription_bool";

		/**
		* A list of 4 GSM RSSI thresholds above which a signal level is considered POOR,
		* MODERATE, GOOD, or EXCELLENT, to be used in SignalStrength reporting.
		*
		* Note that the min and max thresholds are fixed at -113 and -51, as set in 3GPP TS 27.007
		* section 8.5.
		* <p>
		* See CellSignalStrengthGsm#GSM_RSSI_MAX and CellSignalStrengthGsm#GSM_RSSI_MIN. Any signal
		* level outside these boundaries is considered invalid.
		* @hide
		*/
		public static final String KEY_GSM_RSSI_THRESHOLDS_INT_ARRAY =
		"gsm_rssi_thresholds_int_array";

		/** The default value for every variable. */
		private final static PersistableBundle sDefaults;
		@@ -2989,6 +3002,13 @@ public class CarrierConfigManager {
		false);
		sDefaults.putString(KEY_SUBSCRIPTION_GROUP_UUID_STRING, "");
		sDefaults.putBoolean(KEY_IS_OPPORTUNISTIC_SUBSCRIPTION_BOOL, false);
		sDefaults.putIntArray(KEY_GSM_RSSI_THRESHOLDS_INT_ARRAY,
		new int[] {
		-107, /* SIGNAL_STRENGTH_POOR */
		-103, /* SIGNAL_STRENGTH_MODERATE */
		-97, /* SIGNAL_STRENGTH_GOOD */
		-89, /* SIGNAL_STRENGTH_GREAT */
		});
		}

		/**

telephony/java/android/telephony/CellSignalStrengthGsm.java

+21 −7

Original line number	Diff line number	Diff line
		@@ -38,6 +38,10 @@ public final class CellSignalStrengthGsm extends CellSignalStrength implements P
		private static final int GSM_RSSI_GOOD = -97;
		private static final int GSM_RSSI_MODERATE = -103;
		private static final int GSM_RSSI_POOR = -107;
		private static final int GSM_RSSI_MIN = -113;

		private static final int[] sRssiThresholds = new int[] {
		GSM_RSSI_POOR, GSM_RSSI_MODERATE, GSM_RSSI_GOOD, GSM_RSSI_GREAT};

		private int mRssi; // in dBm [-113, -51] or UNAVAILABLE
		@UnsupportedAppUsage
		@@ -54,7 +58,7 @@ public final class CellSignalStrengthGsm extends CellSignalStrength implements P

		/** @hide */
		public CellSignalStrengthGsm(int rssi, int ber, int ta) {
		mRssi = inRangeOrUnavailable(rssi, -113, -51);
		mRssi = inRangeOrUnavailable(rssi, GSM_RSSI_MIN, GSM_RSSI_MAX);
		mBitErrorRate = inRangeOrUnavailable(ber, 0, 7, 99);
		mTimingAdvance = inRangeOrUnavailable(ta, 0, 219);
		updateLevel(null, null);
		@@ -108,12 +112,22 @@ public final class CellSignalStrengthGsm extends CellSignalStrength implements P
		/** @hide */
		@Override
		public void updateLevel(PersistableBundle cc, ServiceState ss) {
		if (mRssi > GSM_RSSI_MAX) mLevel = SIGNAL_STRENGTH_NONE_OR_UNKNOWN;
		else if (mRssi >= GSM_RSSI_GREAT) mLevel = SIGNAL_STRENGTH_GREAT;
		else if (mRssi >= GSM_RSSI_GOOD) mLevel = SIGNAL_STRENGTH_GOOD;
		else if (mRssi >= GSM_RSSI_MODERATE) mLevel = SIGNAL_STRENGTH_MODERATE;
		else if (mRssi >= GSM_RSSI_POOR) mLevel = SIGNAL_STRENGTH_POOR;
		else mLevel = SIGNAL_STRENGTH_NONE_OR_UNKNOWN;
		int[] rssiThresholds;
		if (cc == null) {
		rssiThresholds = sRssiThresholds;
		} else {
		rssiThresholds = cc.getIntArray(CarrierConfigManager.KEY_GSM_RSSI_THRESHOLDS_INT_ARRAY);
		if (rssiThresholds == null \|\| rssiThresholds.length != NUM_SIGNAL_STRENGTH_THRESHOLDS) {
		rssiThresholds = sRssiThresholds;
		}
		}
		int level = NUM_SIGNAL_STRENGTH_THRESHOLDS;
		if (mRssi < GSM_RSSI_MIN \|\| mRssi > GSM_RSSI_MAX) {
		mLevel = SIGNAL_STRENGTH_NONE_OR_UNKNOWN;
		return;
		}
		while (level > 0 && mRssi < rssiThresholds[level - 1]) level--;
		mLevel = level;
		}

		/**