1 /*
2  * Copyright 2019 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.server.wifi;
18 
19 import android.telephony.Annotation.NetworkType;
20 import android.telephony.SignalStrength;
21 import android.telephony.TelephonyManager;
22 
23 /**
24  * A class representing the link layer statistics of the primary registered cell
25  * of cellular network
26  */
27 public class CellularLinkLayerStats {
28     /** Cellular data network type currently in use on the device for data transmission */
29     private @NetworkType int mDataNetworkType =
30             TelephonyManager.NETWORK_TYPE_UNKNOWN;
31     /**
32      * Cellular signal strength in dBm, NR: CsiRsrp, LTE: Rsrp, WCDMA/TDSCDMA: Rscp,
33      * CDMA: Rssi, EVDO: Rssi, GSM: Rssi
34      */
35     private int mSignalStrengthDbm = SignalStrength.INVALID;
36     /**
37      * Cellular signal strength in dB, NR: CsiSinr, LTE: Rsrq, WCDMA: EcNo, TDSCDMA: invalid,
38      * CDMA: Ecio, EVDO: SNR, GSM: invalid
39      */
40     private int mSignalStrengthDb = SignalStrength.INVALID;
41     /** Whether it is a new or old registered cell */
42     private boolean mIsSameRegisteredCell = false;
43 
setDataNetworkType(@etworkType int dataNetworkType)44     public void setDataNetworkType(@NetworkType int dataNetworkType) {
45         mDataNetworkType = dataNetworkType;
46     }
47 
setSignalStrengthDbm(int signalStrengthDbm)48     public void setSignalStrengthDbm(int signalStrengthDbm) {
49         mSignalStrengthDbm = signalStrengthDbm;
50     }
51 
setIsSameRegisteredCell(boolean isSameRegisteredCell)52     public void setIsSameRegisteredCell(boolean isSameRegisteredCell) {
53         mIsSameRegisteredCell = isSameRegisteredCell;
54     }
55 
setSignalStrengthDb(int signalStrengthDb)56     public void setSignalStrengthDb(int signalStrengthDb) {
57         mSignalStrengthDb = signalStrengthDb;
58     }
59 
getDataNetworkType()60     public @NetworkType int getDataNetworkType() {
61         return mDataNetworkType;
62     }
63 
getIsSameRegisteredCell()64     public boolean getIsSameRegisteredCell() {
65         return mIsSameRegisteredCell;
66     }
67 
getSignalStrengthDb()68     public int getSignalStrengthDb() {
69         return mSignalStrengthDb;
70     }
71 
getSignalStrengthDbm()72     public int getSignalStrengthDbm() {
73         return mSignalStrengthDbm;
74     }
75 
76     @Override
toString()77     public String toString() {
78         StringBuilder sbuf = new StringBuilder();
79         sbuf.append(" CellularLinkLayerStats: ").append('\n')
80                 .append(" Data Network Type: ")
81                 .append(mDataNetworkType).append('\n')
82                 .append(" Signal Strength in dBm: ")
83                 .append(mSignalStrengthDbm).append('\n')
84                 .append(" Signal Strength in dB: ")
85                 .append(mSignalStrengthDb).append('\n')
86                 .append(" Is it the same registered cell? ")
87                 .append(mIsSameRegisteredCell).append('\n');
88         return sbuf.toString();
89     }
90 }
91