Update ServiceState with PhysicalChannelConfigs. (ba018e07) · Commits · e / os / android_frameworks_opt_telephony

src/java/com/android/internal/telephony/RatRatcheter.java

+41 −6

Original line number	Diff line number	Diff line
		@@ -22,11 +22,13 @@ import android.content.IntentFilter;
		import android.os.PersistableBundle;
		import android.os.UserHandle;
		import android.telephony.CarrierConfigManager;
		import android.telephony.ServiceState;
		import android.telephony.Rlog;
		import android.telephony.ServiceState;
		import android.util.SparseArray;
		import android.util.SparseIntArray;

		import java.util.Arrays;

		/**
		* This class loads configuration from CarrierConfig and uses it to determine
		* what RATs are within a ratcheting family. For example all the HSPA/HSDPA/HSUPA RATs.
		@@ -46,10 +48,31 @@ public class RatRatcheter {
		private final SparseArray<SparseIntArray> mRatFamilyMap = new SparseArray<>();

		private final Phone mPhone;

		private boolean mVoiceRatchetEnabled = true;
		private boolean mDataRatchetEnabled = true;

		/**
		* Updates the ServiceState with a new set of cell bandwidths IFF the new bandwidth list has a
		* higher aggregate bandwidth.
		*
		* @return Whether the bandwidths were updated.
		*/
		public static boolean updateBandwidths(int[] bandwidths, ServiceState serviceState) {
		if (bandwidths == null) {
		return false;
		}

		int ssAggregateBandwidth = Arrays.stream(serviceState.getCellBandwidths()).sum();
		int newAggregateBandwidth = Arrays.stream(bandwidths).sum();

		if (newAggregateBandwidth > ssAggregateBandwidth) {
		serviceState.setCellBandwidths(bandwidths);
		return true;
		}

		return false;
		}

		/** Constructor */
		public RatRatcheter(Phone phone) {
		mPhone = phone;
		@@ -61,7 +84,7 @@ public class RatRatcheter {
		resetRatFamilyMap();
		}

		public int ratchetRat(int oldRat, int newRat) {
		private int ratchetRat(int oldRat, int newRat) {
		synchronized (mRatFamilyMap) {
		final SparseIntArray oldFamily = mRatFamilyMap.get(oldRat);
		if (oldFamily == null) return newRat;
		@@ -76,7 +99,11 @@ public class RatRatcheter {
		}
		}

		public void ratchetRat(ServiceState oldSS, ServiceState newSS, boolean locationChange) {
		/** Ratchets RATs and cell bandwidths if oldSS and newSS have the same RAT family. */
		public void ratchet(ServiceState oldSS, ServiceState newSS, boolean locationChange) {
		if (isSameRatFamily(oldSS, newSS)) {
		updateBandwidths(oldSS.getCellBandwidths(), newSS);
		}
		// temporarily disable rat ratchet on location change.
		if (locationChange) {
		mVoiceRatchetEnabled = false;
		@@ -101,11 +128,19 @@ public class RatRatcheter {
		mVoiceRatchetEnabled = true;
		}

		boolean newUsingCA = oldSS.isUsingCarrierAggregation() \|\|
		newSS.isUsingCarrierAggregation();
		boolean newUsingCA = oldSS.isUsingCarrierAggregation()
		\|\| newSS.isUsingCarrierAggregation()
		\|\| newSS.getCellBandwidths().length > 1;
		newSS.setIsUsingCarrierAggregation(newUsingCA);
		}

		private boolean isSameRatFamily(ServiceState ss1, ServiceState ss2) {
		synchronized (mRatFamilyMap) {
		return mRatFamilyMap.get(ss1.getRilDataRadioTechnology())
		== mRatFamilyMap.get(ss2.getRilDataRadioTechnology());
		}
		}

		private BroadcastReceiver mConfigChangedReceiver = new BroadcastReceiver() {
		@Override
		public void onReceive(Context context, Intent intent) {

src/java/com/android/internal/telephony/ServiceStateTracker.java

+16 −3

Original line number	Diff line number	Diff line
		@@ -1431,6 +1431,11 @@ public class ServiceStateTracker extends Handler {
		+ list);
		}
		mPhone.notifyPhysicalChannelConfiguration(list);

		// only notify if bandwidths changed
		if (RatRatcheter.updateBandwidths(getBandwidthsFromConfigs(list), mSS)) {
		mPhone.notifyServiceStateChanged(mSS);
		}
		}
		break;

		@@ -1440,6 +1445,13 @@ public class ServiceStateTracker extends Handler {
		}
		}

		private int[] getBandwidthsFromConfigs(List<PhysicalChannelConfig> list) {
		return list.stream()
		.map(PhysicalChannelConfig::getCellBandwidthDownlink)
		.mapToInt(Integer::intValue)
		.toArray();
		}

		protected boolean isSidsAllZeros() {
		if (mHomeSystemId != null) {
		for (int i=0; i < mHomeSystemId.length; i++) {
		@@ -2645,11 +2657,12 @@ public class ServiceStateTracker extends Handler {

		boolean hasLocationChanged = !mNewCellLoc.equals(mCellLoc);

		// ratchet the new tech up through it's rat family but don't drop back down
		// ratchet the new tech up through its rat family but don't drop back down
		// until cell change or device is OOS
		boolean isDataInService = mNewSS.getDataRegState() == ServiceState.STATE_IN_SERVICE;
		if (isDataInService) {
		mRatRatcheter.ratchetRat(mSS, mNewSS, hasLocationChanged);

		if (!hasLocationChanged && isDataInService) {
		mRatRatcheter.ratchet(mSS, mNewSS, hasLocationChanged);
		}

		boolean hasRilVoiceRadioTechnologyChanged =

tests/telephonytests/src/com/android/internal/telephony/RatRatcheterTest.java

0 → 100644

+71 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2018 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.internal.telephony;

		import static junit.framework.Assert.assertFalse;
		import static junit.framework.Assert.assertTrue;

		import android.telephony.ServiceState;

		import org.junit.Before;
		import org.junit.Test;

		import java.util.Arrays;

		/** Tests for RatRatcheter. */
		public class RatRatcheterTest {

		private ServiceState mServiceState;

		@Before
		public void setUp() {
		mServiceState = new ServiceState();
		}

		@Test
		public void testUpdateBandwidthsSuccess() {
		int[] bandwidths = new int[] {1400, 5000};
		mServiceState.setCellBandwidths(new int[] {5000});

		boolean updated = RatRatcheter.updateBandwidths(bandwidths, mServiceState);

		assertTrue(updated);
		assertTrue(Arrays.equals(mServiceState.getCellBandwidths(), bandwidths));
		}

		@Test
		public void testUpdateBandwidthsFailure() {
		int[] originalBandwidths = {5000, 10000};
		int[] newBandwidths = {1400, 5000};
		mServiceState.setCellBandwidths(originalBandwidths);

		boolean updated = RatRatcheter.updateBandwidths(newBandwidths, mServiceState);

		assertFalse(updated);
		assertTrue(Arrays.equals(mServiceState.getCellBandwidths(), originalBandwidths));
		}

		@Test
		public void testUpdateBandwidthsNull() {
		int[] originalBandwidths = {5000, 10000};
		mServiceState.setCellBandwidths(originalBandwidths);

		boolean updated = RatRatcheter.updateBandwidths(null, mServiceState);

		assertFalse(updated);
		assertTrue(Arrays.equals(mServiceState.getCellBandwidths(), originalBandwidths));
		}
		}