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CellSignalStrengthLte

public final class CellSignalStrengthLte
extends CellSignalStrength implements Parcelable

java.lang.Object
   ↳ android.telephony.CellSignalStrength
     ↳ android.telephony.CellSignalStrengthLte


LTE signal strength related information.

Summary

Inherited constants

Fields

public static final Creator<CellSignalStrengthLte> CREATOR

Implement the Parcelable interface

Public methods

int describeContents()

Implement the Parcelable interface

boolean equals(Object o)

Indicates whether some other object is "equal to" this one.

int getAsuLevel()

Get the RSRP in ASU.

int getCqi()

Get channel quality indicator

int getDbm()

Get signal strength in dBm

int getLevel()

Retrieve an abstract level value for the overall signal quality.

int getRsrp()

Get reference signal received power in dBm

int getRsrq()

Get reference signal received quality

int getRssi()

Get Received Signal Strength Indication (RSSI) in dBm The value range is [-113, -51] inclusively or CellInfo#UNAVAILABLE if unavailable.

int getRssnr()

Get reference signal signal-to-noise ratio

int getTimingAdvance()

Get the timing advance value for LTE, as a value in range of 0..1282.

int hashCode()

Returns a hash code value for the object.

String toString()

Returns a string representation of the object.

void writeToParcel(Parcel dest, int flags)

Implement the Parcelable interface

Inherited methods

Fields

CREATOR

public static final Creator<CellSignalStrengthLte> CREATOR

Implement the Parcelable interface

Public methods

describeContents

public int describeContents ()

Implement the Parcelable interface

Returns
int a bitmask indicating the set of special object types marshaled by this Parcelable object instance. Value is either 0 or CONTENTS_FILE_DESCRIPTOR

equals

public boolean equals (Object o)

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

  • It is reflexive: for any non-null reference value x, x.equals(x) should return true.
  • It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
  • It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
  • It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
  • For any non-null reference value x, x.equals(null) should return false.

The equals method for class Object implements the most discriminating possible equivalence relation on objects; that is, for any non-null reference values x and y, this method returns true if and only if x and y refer to the same object (x == y has the value true).

Note that it is generally necessary to override the hashCode method whenever this method is overridden, so as to maintain the general contract for the hashCode method, which states that equal objects must have equal hash codes.

Parameters
o Object: the reference object with which to compare.

Returns
boolean true if this object is the same as the obj argument; false otherwise.

getAsuLevel

public int getAsuLevel ()

Get the RSRP in ASU. Asu is calculated based on 3GPP RSRP. Refer to 3GPP 27.007 (Ver 10.3.0) Sec 8.69

Returns
int RSCP in ASU 0..97, 255, or UNAVAILABLE

getCqi

public int getCqi ()

Get channel quality indicator

Returns
int the CQI if available or UNAVAILABLE if unavailable.

getDbm

public int getDbm ()

Get signal strength in dBm

Returns
int the RSRP of the measured cell.

getLevel

public int getLevel ()

Retrieve an abstract level value for the overall signal quality.

Returns
int Value is between SIGNAL_STRENGTH_NONE_OR_UNKNOWN and SIGNAL_STRENGTH_GREAT inclusive

getRsrp

public int getRsrp ()

Get reference signal received power in dBm

Returns
int the RSRP of the measured cell.

getRsrq

public int getRsrq ()

Get reference signal received quality

Returns
int the RSRQ if available or UNAVAILABLE if unavailable.

getRssi

public int getRssi ()

Get Received Signal Strength Indication (RSSI) in dBm The value range is [-113, -51] inclusively or CellInfo#UNAVAILABLE if unavailable. Reference: TS 27.007 8.5 Signal quality +CSQ

Returns
int the RSSI if available or CellInfo#UNAVAILABLE if unavailable.

getRssnr

public int getRssnr ()

Get reference signal signal-to-noise ratio

Returns
int the RSSNR if available or UNAVAILABLE if unavailable.

getTimingAdvance

public int getTimingAdvance ()

Get the timing advance value for LTE, as a value in range of 0..1282. UNAVAILABLE is reported when there is no active RRC connection. Refer to 3GPP 36.213 Sec 4.2.3

Returns
int the LTE timing advance if available or UNAVAILABLE if unavailable.

hashCode

public int hashCode ()

Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by HashMap.

The general contract of hashCode is:

  • Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
  • If two objects are equal according to the equals(Object) method, then calling the hashCode method on each of the two objects must produce the same integer result.
  • It is not required that if two objects are unequal according to the equals(java.lang.Object) method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

As much as is reasonably practical, the hashCode method defined by class Object does return distinct integers for distinct objects. (This is typically implemented by converting the internal address of the object into an integer, but this implementation technique is not required by the Java™ programming language.)

Returns
int a hash code value for this object.

toString

public String toString ()

Returns a string representation of the object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method.

The toString method for class Object returns a string consisting of the name of the class of which the object is an instance, the at-sign character `@', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of:

 getClass().getName() + '@' + Integer.toHexString(hashCode())
 

Returns
String string representation.

writeToParcel

public void writeToParcel (Parcel dest, 
                int flags)

Implement the Parcelable interface

Parameters
dest Parcel: The Parcel in which the object should be written.

flags int: Additional flags about how the object should be written. May be 0 or Parcelable.PARCELABLE_WRITE_RETURN_VALUE. Value is either 0 or a combination of Parcelable.PARCELABLE_WRITE_RETURN_VALUE, and android.os.Parcelable.PARCELABLE_ELIDE_DUPLICATES