Merge "Allow GSM RSSI levels to be customized by CarrierConfig" into qt-dev
diff --git a/telephony/java/android/telephony/CarrierConfigManager.java b/telephony/java/android/telephony/CarrierConfigManager.java
index 0f8f873..970bbf8 100755
--- a/telephony/java/android/telephony/CarrierConfigManager.java
+++ b/telephony/java/android/telephony/CarrierConfigManager.java
@@ -2803,6 +2803,19 @@
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;
@@ -3204,6 +3217,13 @@
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 */
+ });
}
/**
diff --git a/telephony/java/android/telephony/CellSignalStrengthGsm.java b/telephony/java/android/telephony/CellSignalStrengthGsm.java
index 0aeb0f6..bd3bd1a 100644
--- a/telephony/java/android/telephony/CellSignalStrengthGsm.java
+++ b/telephony/java/android/telephony/CellSignalStrengthGsm.java
@@ -37,6 +37,10 @@
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
@@ -53,7 +57,7 @@
/** @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);
@@ -111,12 +115,22 @@
/** @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;
}
/**