过去十年中，有些人提出了类似的问题，但没有人有任何答案。我需要编写一个收集并存储RSRP，RSRQ，CINR和Cell ID的Android应用程序。答案需要与手机硬件允许的一样准确（我在三星Galaxy S5上测试），因为我需要使用这些值进行后期处理统计。
有谁知道如何使用telephonyManager或CellSignalStrengthLte获取RSRP？或者是否有另一种可能更好的方法来获得RSRP？
到目前为止，我能够做的最好的事情是使用PhoneStateListener和TelephonyManager来获取RSSI值，但RSSI对我的统计数据没用：
package com.pscr.jparks.signalstrength;
import android.app.Activity;
import android.os.Bundle;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.widget.TextView;
/*
TS 27.007 8.5
Defined values
<rssi>:
0 -113 dBm or less
1 -111 dBm
2...30 -109... -53 dBm
31 -51 dBm or greater
99 not known or not detectable
*/
public class SignalStrengthActivity extends Activity {
SignalStrengthListener signalStrengthListener;
TextView signalStrengthTextView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setup content stuff
this.setContentView(R.layout.signal_strength);
signalStrengthTextView = (TextView) findViewById(R.id.signalStrengthTextView);
//start the signal strength listener
signalStrengthListener = new SignalStrengthListener();
((TelephonyManager) getSystemService(TELEPHONY_SERVICE)).listen(signalStrengthListener, SignalStrengthListener.LISTEN_SIGNAL_STRENGTHS);
}
private class SignalStrengthListener extends PhoneStateListener {
@Override
public void onSignalStrengthsChanged(android.telephony.SignalStrength signalStrength) {
// get the signal strength (a value between 0 and 31)
int strengthAmplitude = signalStrength.getGsmSignalStrength();
//do something with it (in this case we update a text view)
signalStrengthTextView.setText(String.valueOf(strengthAmplitude));
super.onSignalStrengthsChanged(signalStrength);
}
}
}
如果有人解决了这个问题，或者找到答案（我到处都看了！），请告诉我！
答案 0 :(得分：4)
<强>更新
TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
List<CellInfo> cellInfoList = tm.getAllCellInfo();
for (CellInfo cellInfo : cellInfoList)
{
if (cellInfo instanceof CellInfoLte)
{
// cast to CellInfoLte and call all the CellInfoLte methods you need
((CellInfoLte)cellInfo).getCellSignalStrength().getDbm();
}
}
答案 1 :(得分：2)
这是我的回答以及Bruce Lan的代码。这仍然是一项正在进行的工作，但它显示了如何收集各种LTE参数。您可以从我的GitHub帐户获取整个Android Studio项目：https://github.com/parksjg/SignalStrength
package com.pscr.jparks.signalstrength;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.telephony.CellInfo;
import android.telephony.CellInfoLte;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.widget.TextView;
import java.util.List;
/*
TS 27.007 8.5
Defined values
<rsrp>:
0 -113 dBm or less
1 -111 dBm
2...30 -109... -53 dBm
31 -51 dBm or greater
99 not known or not detectable
*/
/*
The parts[] array will then contain these elements:
part[0] = "Signalstrength:" _ignore this, it's just the title_
parts[1] = GsmSignalStrength
parts[2] = GsmBitErrorRate
parts[3] = CdmaDbm
parts[4] = CdmaEcio
parts[5] = EvdoDbm
parts[6] = EvdoEcio
parts[7] = EvdoSnr
parts[8] = LteSignalStrength
parts[9] = LteRsrp
parts[10] = LteRsrq
parts[11] = LteRssnr
parts[12] = LteCqi
parts[13] = gsm|lte
parts[14] = _not reall sure what this number is_
*/
public class SignalStrengthActivity extends Activity {
// How do I release the Listener when app closes???????
SignalStrengthListener signalStrengthListener;
TextView signalStrengthTextView, signalStrengthTextView2;
TextView cellIDTextView;
TextView cellMccTextView;
TextView cellMncTextView;
TextView cellPciTextView;
TextView cellTacTextView;
List<CellInfo> cellInfoList;
int cellSig, cellID, cellMcc, cellMnc, cellPci, cellTac = 0;
TelephonyManager tm;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setup content stuff
this.setContentView(R.layout.signal_strength);
signalStrengthTextView = (TextView) findViewById(R.id.signalStrengthTextView);
signalStrengthTextView2 = (TextView) findViewById(R.id.signalStrengthTextView2);
cellIDTextView = (TextView) findViewById(R.id.cellIDTextView);
cellMccTextView = (TextView) findViewById(R.id.cellMccTextView);
cellMncTextView = (TextView) findViewById(R.id.cellMncTextView);
cellPciTextView = (TextView) findViewById(R.id.cellPciTextView);
cellTacTextView = (TextView) findViewById(R.id.cellTacTextView);
//start the signal strength listener
signalStrengthListener = new SignalStrengthListener();
((TelephonyManager) getSystemService(TELEPHONY_SERVICE)).listen(signalStrengthListener, SignalStrengthListener.LISTEN_SIGNAL_STRENGTHS);
tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
try {
cellInfoList = tm.getAllCellInfo();
} catch (Exception e) {
Log.d("SignalStrength", "+++++++++++++++++++++++++++++++++++++++++ null array spot 1: " + e);
}
try {
for (CellInfo cellInfo : cellInfoList) {
if (cellInfo instanceof CellInfoLte) {
// cast to CellInfoLte and call all the CellInfoLte methods you need
// gets RSRP cell signal strength:
cellSig = ((CellInfoLte) cellInfo).getCellSignalStrength().getDbm();
// Gets the LTE cell indentity: (returns 28-bit Cell Identity, Integer.MAX_VALUE if unknown)
cellID = ((CellInfoLte) cellInfo).getCellIdentity().getCi();
// Gets the LTE MCC: (returns 3-digit Mobile Country Code, 0..999, Integer.MAX_VALUE if unknown)
cellMcc = ((CellInfoLte) cellInfo).getCellIdentity().getMcc();
// Gets theLTE MNC: (returns 2 or 3-digit Mobile Network Code, 0..999, Integer.MAX_VALUE if unknown)
cellMnc = ((CellInfoLte) cellInfo).getCellIdentity().getMnc();
// Gets the LTE PCI: (returns Physical Cell Id 0..503, Integer.MAX_VALUE if unknown)
cellPci = ((CellInfoLte) cellInfo).getCellIdentity().getPci();
// Gets the LTE TAC: (returns 16-bit Tracking Area Code, Integer.MAX_VALUE if unknown)
cellTac = ((CellInfoLte) cellInfo).getCellIdentity().getTac();
}
}
} catch (Exception e) {
Log.d("SignalStrength", "++++++++++++++++++++++ null array spot 2: " + e);
}
}
@Override
public void onPause() {
super.onPause();
try{
if(signalStrengthListener != null){tm.listen(signalStrengthListener, SignalStrengthListener.LISTEN_NONE);}
}catch(Exception e){
e.printStackTrace();
}
}
public void onDestroy() {
super.onDestroy();
try{
if(signalStrengthListener != null){tm.listen(signalStrengthListener, SignalStrengthListener.LISTEN_NONE);}
}catch(Exception e){
e.printStackTrace();
}
}
private class SignalStrengthListener extends PhoneStateListener {
@Override
public void onSignalStrengthsChanged(android.telephony.SignalStrength signalStrength) {
//++++++++++++++++++++++++++++++++++
((TelephonyManager) getSystemService(TELEPHONY_SERVICE)).listen(signalStrengthListener, SignalStrengthListener.LISTEN_SIGNAL_STRENGTHS);
tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
String ltestr = signalStrength.toString();
String[] parts = ltestr.split(" ");
String cellSig2 = parts[9];
try {
cellInfoList = tm.getAllCellInfo();
for (CellInfo cellInfo : cellInfoList) {
if (cellInfo instanceof CellInfoLte) {
// cast to CellInfoLte and call all the CellInfoLte methods you need
// gets RSRP cell signal strength:
cellSig = ((CellInfoLte) cellInfo).getCellSignalStrength().getDbm();
// Gets the LTE cell identity: (returns 28-bit Cell Identity, Integer.MAX_VALUE if unknown)
cellID = ((CellInfoLte) cellInfo).getCellIdentity().getCi();
// Gets the LTE MCC: (returns 3-digit Mobile Country Code, 0..999, Integer.MAX_VALUE if unknown)
cellMcc = ((CellInfoLte) cellInfo).getCellIdentity().getMcc();
// Gets theLTE MNC: (returns 2 or 3-digit Mobile Network Code, 0..999, Integer.MAX_VALUE if unknown)
cellMnc = ((CellInfoLte) cellInfo).getCellIdentity().getMnc();
// Gets the LTE PCI: (returns Physical Cell Id 0..503, Integer.MAX_VALUE if unknown)
cellPci = ((CellInfoLte) cellInfo).getCellIdentity().getPci();
// Gets the LTE TAC: (returns 16-bit Tracking Area Code, Integer.MAX_VALUE if unknown)
cellTac = ((CellInfoLte) cellInfo).getCellIdentity().getTac();
}
}
} catch (Exception e) {
Log.d("SignalStrength", "+++++++++++++++++++++++++++++++ null array spot 3: " + e);
}
signalStrengthTextView.setText(String.valueOf(cellSig));
signalStrengthTextView2.setText(String.valueOf(cellSig2));
cellIDTextView.setText(String.valueOf(cellID));
cellMccTextView.setText(String.valueOf(cellMcc));
cellMncTextView.setText(String.valueOf(cellMnc));
cellPciTextView.setText(String.valueOf(cellPci));
cellTacTextView.setText(String.valueOf(cellTac));
super.onSignalStrengthsChanged(signalStrength);
//++++++++++++++++++++++++++++++++++++
}
}
}
感谢Bruce Lan和这个网站（https://sites.google.com/site/androiddevelopmentproject/home/rf-signal-tracker/a-very-basic-how-to）帮助我！
答案 2 :(得分：0)
在一开始，我遇到了单元格信息为null，不允许访问单元格信息等情况。最终，我找到了一种从LTE获取参数的方法。这段代码对我有用，可以获取诸如rsrp，rsrq和sinr之类的参数。我希望它也对您有用。
List<CellSignalStrength> cellInfoList;
TelephonyManager tm = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
cellInfoList = tm.getSignalStrength().getCellSignalStrengths();
for (CellSignalStrength cellInfo : cellInfoList) {
if (cellInfo instanceof CellSignalStrengthLte) {
rsrp = ((CellSignalStrengthLte) cellInfo).getRsrp();
rsrq = ((CellSignalStrengthLte) cellInfo).getRsrq();
snr = ((CellSignalStrengthLte) cellInfo).getRssnr();
}
}
rsrpValue.setText(String.valueOf(rsrp));
rsrqValue.setText(String.valueOf(rsrq));
sinr.setText(String.valueOf(snr));
我的清单权限：
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-permission android:name="android.permission.INTERNET"/>