Package com.facebook.openwifi.cloudsdk.ies

Class QbssLoad

java.lang.Object

com.facebook.openwifi.cloudsdk.ies.QbssLoad

public class QbssLoad
extends Object

This information element (IE) appears in wifiscan entries. It is called "QBSS Load" in these entries, and just "BSS Load" in the 802.11 specification (section 9.4.2.27). Refer to the specification for more details. Language in javadocs is taken from the specification.

Field Summary

Fields

Modifier and Type	Field	Description
short	availableAdmissionCapacity	Unsigned 16 bits - The Available Admission Capacity field contains an unsigned integer that specifies the remaining amount of medium time available via explicit admission control, in units of 32 miscrosecond/second.
short	channelUtilization	Unsigned 8 bits - The Channel Utilization field is defined as the percentage of time, linearly scaled with 255 representing 100%, that the AP sensed the medium was busy, as indicated by either the physical or virtual carrier sense (CS) mechanism.
short	stationCount	Unsigned 16 bits - The total number of STAs currently associated with the BSS.
static int	TYPE	Defined in 802.11 table 9-92

Constructor Summary

Constructors

Constructor	Description
QbssLoad(short stationCount, short channelUtilization, short availableAdmissionCapacity)	Constructor

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)
int	hashCode()
static QbssLoad	parse(com.google.gson.JsonObject contents)	Parse QbssLoad IE from appropriate Json object; return null if invalid.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

TYPE

public static final int TYPE

Defined in 802.11 table 9-92

See Also:

Constant Field Values

stationCount

public final short stationCount

Unsigned 16 bits - The total number of STAs currently associated with the BSS.

channelUtilization

public final short channelUtilization

Unsigned 8 bits - The Channel Utilization field is defined as the percentage of time, linearly scaled with 255 representing 100%, that the AP sensed the medium was busy, as indicated by either the physical or virtual carrier sense (CS) mechanism. When more than one channel is in use for the BSS, the Channel Utilization field value is calculated only for the primary channel. This percentage is computed using the following formula:

floor(255 * channelBusyTime / (dot11ChannelUtilizationBeaconIntervals * dot11BeaconPeriod * 1024) )

availableAdmissionCapacity

public final short availableAdmissionCapacity

Unsigned 16 bits - The Available Admission Capacity field contains an unsigned integer that specifies the remaining amount of medium time available via explicit admission control, in units of 32 miscrosecond/second. The field is helpful for roaming STAs to select an AP that is likely to accept future admission control requests, but it does not represent an assurance that the HC admits these requests.

Constructor Detail

QbssLoad

public QbssLoad(short stationCount,
                short channelUtilization,
                short availableAdmissionCapacity)

Constructor

Method Detail

parse

public static QbssLoad parse(com.google.gson.JsonObject contents)

Parse QbssLoad IE from appropriate Json object; return null if invalid.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object