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Merge "Allow GSM RSSI levels to be customized by CarrierConfig"

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am: 5ab0dd0aa0

Change-Id: Idbf8d05677735805cc6000823d90d37b1714ed4a
This commit is contained in:
Jack Yu
2019-04-10 16:52:14 -07:00
committed by android-build-merger
parent 469fb50385 5ab0dd0aa0
commit b71dc1e65d
2 changed files with 41 additions and 7 deletions
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20
telephony/java/android/telephony/CarrierConfigManager.java
View File

@@ -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 */
});
}
/**

28
telephony/java/android/telephony/CellSignalStrengthGsm.java
View File

@@ -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;
}
/**