Merge "Report the bandwidth from adjacent signal level" (1c36e39e) · Commits · e / devices / smdk4412 / android_frameworks_opt_telephony

src/java/com/android/internal/telephony/dataconnection/LinkBandwidthEstimator.java

+43 −0

Original line number	Diff line number	Diff line
		@@ -693,6 +693,45 @@ public class LinkBandwidthEstimator extends Handler {
		return -1;
		}

		private int getAvgUsedBandwidthAdjacentThreeLevelKbps() {
		String dataRatName = getDataRatName(mDataRat);
		NetworkBandwidth network = lookupNetwork(mPlmn, dataRatName);

		int bandwidthAtLow = getAvgUsedBandwidthAtLevel(network, mSignalLevel - 1);
		int bandwidthAtHigh = getAvgUsedBandwidthAtLevel(network, mSignalLevel + 1);
		if (bandwidthAtLow > 0 && bandwidthAtHigh > 0) {
		return (bandwidthAtLow + bandwidthAtHigh) / 2;
		}

		int count = 0;
		long value = 0;
		for (int i = -1; i <= 1; i++) {
		int currLevel = mSignalLevel + i;
		if (currLevel < 0 \|\| currLevel >= NUM_SIGNAL_LEVEL) {
		continue;
		}
		count += network.getCount(mLink, currLevel);
		value += network.getValue(mLink, currLevel);
		}

		if (count >= BW_STATS_COUNT_THRESHOLD) {
		return (int) (value / count);
		}
		return -1;
		}

		private int getAvgUsedBandwidthAtLevel(NetworkBandwidth network,
		int signalLevel) {
		if (signalLevel < 0 \|\| signalLevel >= NUM_SIGNAL_LEVEL) {
		return -1;
		}
		int count = network.getCount(mLink, signalLevel);
		if (count >= BW_STATS_COUNT_THRESHOLD) {
		return (int) (network.getValue(mLink, signalLevel) / count);
		}
		return -1;
		}

		private int getCurrentCount() {
		String dataRatName = getDataRatName(mDataRat);
		NetworkBandwidth network = lookupNetwork(mPlmn, dataRatName);
		@@ -705,6 +744,10 @@ public class LinkBandwidthEstimator extends Handler {
		if (mAvgUsedKbps > 0) {
		return mAvgUsedKbps;
		}
		mAvgUsedKbps = getAvgUsedBandwidthAdjacentThreeLevelKbps();
		if (mAvgUsedKbps > 0) {
		return mAvgUsedKbps;
		}
		// Fall back to static value
		return mStaticBwKbps;
		}

tests/telephonytests/src/com/android/internal/telephony/dataconnection/LinkBandwidthEstimatorTest.java

+29 −3

Original line number	Diff line number	Diff line
		@@ -105,6 +105,7 @@ public class LinkBandwidthEstimatorTest extends TelephonyTest {
		when(mTelephonyFacade.getMobileTxBytes()).thenReturn(0L);
		when(mTelephonyFacade.getMobileTxBytes()).thenReturn(0L);
		when(mPhone.getCurrentCellIdentity()).thenReturn(mCellIdentity);
		// Note that signal level is 0 before 1st MSG_SIGNAL_STRENGTH_CHANGED
		when(mPhone.getSubId()).thenReturn(1);
		when(mSignalStrength.getDbm()).thenReturn(-100);
		when(mSignalStrength.getLevel()).thenReturn(1);
		@@ -330,17 +331,43 @@ public class LinkBandwidthEstimatorTest extends TelephonyTest {

		verifyUpdateBandwidth(-1, 19_597);

		addTxBytes(20_000L);
		addRxBytes(50_000L);
		when(mSignalStrength.getLevel()).thenReturn(1);
		when(mSignalStrength.getDbm()).thenReturn(-110);
		mLBE.obtainMessage(MSG_SIGNAL_STRENGTH_CHANGED, mSignalStrength).sendToTarget();
		addElapsedTime(6000);
		moveTimeForward(6000);
		processAllMessages();
		verifyUpdateBandwidth(-1, 19_535);

		when(mSignalStrength.getLevel()).thenReturn(2);
		when(mSignalStrength.getDbm()).thenReturn(-90);
		mLBE.obtainMessage(MSG_SIGNAL_STRENGTH_CHANGED, mSignalStrength).sendToTarget();
		addElapsedTime(6000);
		moveTimeForward(6000);
		processAllMessages();
		verifyUpdateBandwidth(-1, -1);

		for (int i = 0; i < BW_STATS_COUNT_THRESHOLD + 2; i++) {
		addTxBytes(10_000L);
		addRxBytes(1000_000L);
		addElapsedTime(5_100);
		moveTimeForward(5_100);
		processAllMessages();
		mLBE.obtainMessage(MSG_MODEM_ACTIVITY_RETURNED, new ModemActivityInfo(
		i * 5_100L, 0, 0, TX_TIME_2_MS, i * RX_TIME_2_MS)).sendToTarget();
		processAllMessages();
		}

		when(mSignalStrength.getLevel()).thenReturn(1);
		when(mSignalStrength.getDbm()).thenReturn(-110);
		mLBE.obtainMessage(MSG_SIGNAL_STRENGTH_CHANGED, mSignalStrength).sendToTarget();
		addElapsedTime(6000);
		moveTimeForward(6000);
		processAllMessages();
		verifyUpdateBandwidth(-1, 30_821);
		}


		@Test
		public void testAvgBwForAllPossibleRat() throws Exception {
		Pair<Integer, Integer> values = mLBE.getStaticAvgBw(TelephonyManager.NETWORK_TYPE_GPRS);
		@@ -401,7 +428,6 @@ public class LinkBandwidthEstimatorTest extends TelephonyTest {
		addRxBytes(19_000L);
		when(mServiceState.getNrState()).thenReturn(NetworkRegistrationInfo.NR_STATE_CONNECTED);
		when(mServiceState.getNrFrequencyRange()).thenReturn(ServiceState.FREQUENCY_RANGE_MMWAVE);
		when(mSignalStrength.getLevel()).thenReturn(2);
		mLBE.obtainMessage(MSG_NR_FREQUENCY_CHANGED).sendToTarget();
		addElapsedTime(6000);
		moveTimeForward(6000);