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Merge "Telephony: Signal Strength cleanup & LTE support"

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This commit is contained in:
Wink Saville
2012-08-13 11:25:49 -07:00
committed by android code review
parent d7b9c6c356 a44b137648
commit eca6497704
1 changed files with 158 additions and 55 deletions
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213
telephony/java/android/telephony/SignalStrength.java Normal file → Executable file
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@@ -48,7 +48,8 @@ public class SignalStrength implements Parcelable {
};
/** @hide */
public static final int INVALID_SNR = 0x7FFFFFFF;
//Use int max, as -1 is a valid value in signal strength
public static final int INVALID = 0x7FFFFFFF;
private int mGsmSignalStrength; // Valid values are (0-31, 99) as defined in TS 27.007 8.5
private int mGsmBitErrorRate; // bit error rate (0-7, 99) as defined in TS 27.007 8.5
@@ -64,7 +65,6 @@ public class SignalStrength implements Parcelable {
private int mLteCqi;
private boolean isGsm; // This value is set by the ServiceStateTracker onSignalStrengthResult
/**
* Create a new SignalStrength from a intent notifier Bundle
*
@@ -96,14 +96,38 @@ public class SignalStrength implements Parcelable {
mEvdoDbm = -1;
mEvdoEcio = -1;
mEvdoSnr = -1;
mLteSignalStrength = -1;
mLteRsrp = -1;
mLteRsrq = -1;
mLteRssnr = INVALID_SNR;
mLteCqi = -1;
mLteSignalStrength = 99;
mLteRsrp = INVALID;
mLteRsrq = INVALID;
mLteRssnr = INVALID;
mLteCqi = INVALID;
isGsm = true;
}
/**
* This constructor is used to create SignalStrength with default
* values and set the isGsmFlag with the value passed in the input
*
* @param gsmFlag true if Gsm Phone,false if Cdma phone
* @return newly created SignalStrength
* @hide
*/
public SignalStrength(boolean gsmFlag) {
mGsmSignalStrength = 99;
mGsmBitErrorRate = -1;
mCdmaDbm = -1;
mCdmaEcio = -1;
mEvdoDbm = -1;
mEvdoEcio = -1;
mEvdoSnr = -1;
mLteSignalStrength = 99;
mLteRsrp = INVALID;
mLteRsrq = INVALID;
mLteRssnr = INVALID;
mLteCqi = INVALID;
isGsm = gsmFlag;
}
/**
* Constructor
*
@@ -138,9 +162,8 @@ public class SignalStrength implements Parcelable {
int cdmaDbm, int cdmaEcio,
int evdoDbm, int evdoEcio, int evdoSnr,
boolean gsm) {
this(gsmSignalStrength, gsmBitErrorRate, cdmaDbm, cdmaEcio,
evdoDbm, evdoEcio, evdoSnr, -1, -1,
-1, INVALID_SNR, -1, gsm);
this(gsmSignalStrength, gsmBitErrorRate, cdmaDbm, cdmaEcio, evdoDbm, evdoEcio, evdoSnr, 99,
INVALID, INVALID, INVALID, INVALID, gsm);
}
/**
@@ -236,7 +259,54 @@ public class SignalStrength implements Parcelable {
};
/**
* Get the GSM Signal Strength, valid values are (0-31, 99) as defined in TS 27.007 8.5
* Validate the individual signal strength fields as per the range
* specified in ril.h
* Set to invalid any field that is not in the valid range
* Cdma, evdo, lte rsrp & rsrq values are sign converted
* when received from ril interface
*
* @return
* Valid values for all signalstrength fields
* @hide
*/
public void validateInput() {
if (DBG) log("Signal before validate=" + this);
// TS 27.007 8.5
mGsmSignalStrength = mGsmSignalStrength >= 0 ? mGsmSignalStrength : 99;
// BER no change;
mCdmaDbm = mCdmaDbm > 0 ? -mCdmaDbm : -120;
mCdmaEcio = (mCdmaEcio > 0) ? -mCdmaEcio : -160;
mEvdoDbm = (mEvdoDbm > 0) ? -mEvdoDbm : -120;
mEvdoEcio = (mEvdoEcio > 0) ? -mEvdoEcio : -1;
mEvdoSnr = ((mEvdoSnr > 0) && (mEvdoSnr <= 8)) ? mEvdoSnr : -1;
// TS 36.214 Physical Layer Section 5.1.3, TS 36.331 RRC
mLteSignalStrength = (mLteSignalStrength >= 0) ? mLteSignalStrength : 99;
mLteRsrp = ((mLteRsrp >= 44) && (mLteRsrp <= 140)) ? -mLteRsrp : SignalStrength.INVALID;
mLteRsrq = ((mLteRsrq >= 3) && (mLteRsrq <= 20)) ? -mLteRsrq : SignalStrength.INVALID;
mLteRssnr = ((mLteRssnr >= -200) && (mLteRssnr <= 300)) ? mLteRssnr
: SignalStrength.INVALID;
// Cqi no change
if (DBG) log("Signal after validate=" + this);
}
/**
* @param true - Gsm, Lte phones
* false - Cdma phones
*
* Used by voice phone to set the isGsm
* flag
* @hide
*/
public void setGsm(boolean gsmFlag) {
isGsm = gsmFlag;
}
/**
* Get the GSM Signal Strength, valid values are (0-31, 99) as defined in TS
* 27.007 8.5
*/
public int getGsmSignalStrength() {
return this.mGsmSignalStrength;
@@ -293,25 +363,19 @@ public class SignalStrength implements Parcelable {
int level;
if (isGsm) {
// TODO Need solve the discrepancy of invalid values between
// RIL_LTE_SignalStrength and here.
if ((mLteSignalStrength == -1)
&& (mLteRsrp == -1)
&& (mLteRsrq == -1)
&& (mLteCqi == -1)) {
level = getLteLevel();
if (level == SIGNAL_STRENGTH_NONE_OR_UNKNOWN) {
level = getGsmLevel();
} else {
level = getLteLevel();
}
} else {
int cdmaLevel = getCdmaLevel();
int evdoLevel = getEvdoLevel();
if (evdoLevel == SIGNAL_STRENGTH_NONE_OR_UNKNOWN) {
/* We don't know evdo, use cdma */
level = getCdmaLevel();
level = cdmaLevel;
} else if (cdmaLevel == SIGNAL_STRENGTH_NONE_OR_UNKNOWN) {
/* We don't know cdma, use evdo */
level = getEvdoLevel();
level = evdoLevel;
} else {
/* We know both, use the lowest level */
level = cdmaLevel < evdoLevel ? cdmaLevel : evdoLevel;
@@ -329,10 +393,7 @@ public class SignalStrength implements Parcelable {
public int getAsuLevel() {
int asuLevel;
if (isGsm) {
if ((mLteSignalStrength == -1)
&& (mLteRsrp == -1)
&& (mLteRsrq == -1)
&& (mLteCqi == -1)) {
if (getLteLevel() == SIGNAL_STRENGTH_NONE_OR_UNKNOWN) {
asuLevel = getGsmAsuLevel();
} else {
asuLevel = getLteAsuLevel();
@@ -364,16 +425,17 @@ public class SignalStrength implements Parcelable {
int dBm;
if(isGsm()) {
if ((mLteSignalStrength == -1)
&& (mLteRsrp == -1)
&& (mLteRsrq == -1)
&& (mLteCqi == -1)) {
if (getLteLevel() == SIGNAL_STRENGTH_NONE_OR_UNKNOWN) {
dBm = getGsmDbm();
} else {
dBm = getLteDbm();
}
} else {
dBm = getCdmaDbm();
int cdmaDbm = getCdmaDbm();
int evdoDbm = getEvdoDbm();
return (evdoDbm == -120) ? cdmaDbm : ((cdmaDbm == -120) ? evdoDbm
: (cdmaDbm < evdoDbm ? cdmaDbm : evdoDbm));
}
if (DBG) log("getDbm=" + dBm);
return dBm;
@@ -568,34 +630,63 @@ public class SignalStrength implements Parcelable {
* @hide
*/
public int getLteLevel() {
int levelLteRsrp = 0;
int levelLteRssnr = 0;
/*
* TS 36.214 Physical Layer Section 5.1.3 TS 36.331 RRC RSSI = received
* signal + noise RSRP = reference signal dBm RSRQ = quality of signal
* dB= Number of Resource blocksxRSRP/RSSI SNR = gain=signal/noise ratio
* = -10log P1/P2 dB
*/
int rssiIconLevel = SIGNAL_STRENGTH_NONE_OR_UNKNOWN, rsrpIconLevel = -1, snrIconLevel = -1;
if (mLteRsrp == -1) levelLteRsrp = 0;
else if (mLteRsrp >= -95) levelLteRsrp = SIGNAL_STRENGTH_GREAT;
else if (mLteRsrp >= -105) levelLteRsrp = SIGNAL_STRENGTH_GOOD;
else if (mLteRsrp >= -115) levelLteRsrp = SIGNAL_STRENGTH_MODERATE;
else levelLteRsrp = SIGNAL_STRENGTH_POOR;
if (mLteRsrp > -44) rsrpIconLevel = -1;
else if (mLteRsrp >= -85) rsrpIconLevel = SIGNAL_STRENGTH_GREAT;
else if (mLteRsrp >= -95) rsrpIconLevel = SIGNAL_STRENGTH_GOOD;
else if (mLteRsrp >= -105) rsrpIconLevel = SIGNAL_STRENGTH_MODERATE;
else if (mLteRsrp >= -115) rsrpIconLevel = SIGNAL_STRENGTH_POOR;
else if (mLteRsrp >= -140) rsrpIconLevel = SIGNAL_STRENGTH_NONE_OR_UNKNOWN;
if (mLteRssnr == INVALID_SNR) levelLteRssnr = 0;
else if (mLteRssnr >= 45) levelLteRssnr = SIGNAL_STRENGTH_GREAT;
else if (mLteRssnr >= 10) levelLteRssnr = SIGNAL_STRENGTH_GOOD;
else if (mLteRssnr >= -30) levelLteRssnr = SIGNAL_STRENGTH_MODERATE;
else levelLteRssnr = SIGNAL_STRENGTH_POOR;
/*
* Values are -200 dB to +300 (SNR*10dB) RS_SNR >= 13.0 dB =>4 bars 4.5
* dB <= RS_SNR < 13.0 dB => 3 bars 1.0 dB <= RS_SNR < 4.5 dB => 2 bars
* -3.0 dB <= RS_SNR < 1.0 dB 1 bar RS_SNR < -3.0 dB/No Service Antenna
* Icon Only
*/
if (mLteRssnr > 300) snrIconLevel = -1;
else if (mLteRssnr >= 130) snrIconLevel = SIGNAL_STRENGTH_GREAT;
else if (mLteRssnr >= 45) snrIconLevel = SIGNAL_STRENGTH_GOOD;
else if (mLteRssnr >= 10) snrIconLevel = SIGNAL_STRENGTH_MODERATE;
else if (mLteRssnr >= -30) snrIconLevel = SIGNAL_STRENGTH_POOR;
else if (mLteRssnr >= -200)
snrIconLevel = SIGNAL_STRENGTH_NONE_OR_UNKNOWN;
int level;
if (mLteRsrp == -1)
level = levelLteRssnr;
else if (mLteRssnr == INVALID_SNR)
level = levelLteRsrp;
else
level = (levelLteRssnr < levelLteRsrp) ? levelLteRssnr : levelLteRsrp;
if (DBG) log("getLTELevel - rsrp:" + mLteRsrp + " snr:" + mLteRssnr + " rsrpIconLevel:"
+ rsrpIconLevel + " snrIconLevel:" + snrIconLevel);
/* Choose a measurement type to use for notification */
if (snrIconLevel != -1 && rsrpIconLevel != -1) {
/*
* The number of bars displayed shall be the smaller of the bars
* associated with LTE RSRP and the bars associated with the LTE
* RS_SNR
*/
return (rsrpIconLevel < snrIconLevel ? rsrpIconLevel : snrIconLevel);
}
if (snrIconLevel != -1) return snrIconLevel;
if (rsrpIconLevel != -1) return rsrpIconLevel;
/* Valid values are (0-63, 99) as defined in TS 36.331 */
if (mLteSignalStrength > 63) rssiIconLevel = SIGNAL_STRENGTH_NONE_OR_UNKNOWN;
else if (mLteSignalStrength >= 12) rssiIconLevel = SIGNAL_STRENGTH_GREAT;
else if (mLteSignalStrength >= 8) rssiIconLevel = SIGNAL_STRENGTH_GOOD;
else if (mLteSignalStrength >= 5) rssiIconLevel = SIGNAL_STRENGTH_MODERATE;
else if (mLteSignalStrength >= 0) rssiIconLevel = SIGNAL_STRENGTH_POOR;
if (DBG) log("getLTELevel - rssi:" + mLteSignalStrength + " rssiIconLevel:"
+ rssiIconLevel);
return rssiIconLevel;
if (DBG) log("Lte rsrp level: "+levelLteRsrp
+ " snr level: " + levelLteRssnr + " level: " + level);
return level;
}
/**
* Get the LTE signal level as an asu value between 0..97, 99 is unknown
* Asu is calculated based on 3GPP RSRP. Refer to 3GPP 27.007 (Ver 10.3.0) Sec 8.69
@@ -605,8 +696,20 @@ public class SignalStrength implements Parcelable {
public int getLteAsuLevel() {
int lteAsuLevel = 99;
int lteDbm = getLteDbm();
if (lteDbm <= -140) lteAsuLevel = 0;
else if (lteDbm >= -43) lteAsuLevel = 97;
/*
* 3GPP 27.007 (Ver 10.3.0) Sec 8.69
* 0 -140 dBm or less
* 1 -139 dBm
* 2...96 -138... -44 dBm
* 97 -43 dBm or greater
* 255 not known or not detectable
*/
/*
* validateInput will always give a valid range between -140 t0 -44 as
* per ril.h. so RSRP >= -43 & <-140 will fall under asu level 255
* and not 97 or 0
*/
if (lteDbm == SignalStrength.INVALID) lteAsuLevel = 255;
else lteAsuLevel = lteDbm + 140;
if (DBG) log("Lte Asu level: "+lteAsuLevel);
return lteAsuLevel;