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Beacon

1. General

Beacon Frame Length (bytes)

Indicates the total number of bytes contained in the Beacon frame, which includes the MAC header, frame body and FCS.

Hex Byte Order

Choice: Little Endian | Big Endian

Default: Little Endian

Specify the byte order of a hexadecimal value entered into a GUI parameter field.

Little Endian -- the leftmost byte (two digits) of the hexadecimal string is least significance and is transmitted first in the beacon frame.

Big Endian -- the leftmost byte (two digits) of the hexadecimal string is most significant and is transmitted last in a the beacon frame

For example, if you want to enter a numeric value of 3215267533596, you must first convert it to its hexadecimal form of 0x2EC9CE1131C. Then in the case of little endian, it should be entered into the GUI field as 1C13E19CEC2, while in the case of big endian, it should be entered as 2EC9CE1131C.

Hex byte order has no effect on the parameters that don't require hexadecimal input. Some parameters using a simple numerical value may still require hexadecimal input via the GUI. In these cases, it is important to consider which endian is selected. When using API, however, you can directly set its numeric value.

2. MAC Header

MAC Header

Click in this parameter field to open a Closedwindow where you can configure the MAC header. Check the hint box and hover the mouse pointer over the various fields for descriptions of each.

3. Frame Body

Time Stamp

It represents the value of the timing synchronization function (TSF) timer of a frame’s source. The length of the time stamp field is 8 octets.

Beacon Interval (TU)

It represents the number of time units (TUs) between target beacon transmission times (TBTTs). The length of the Beacon Interval field is 2 octets. One time unit (TU) equals 1024 µs.

Capability

Click in this parameter field to open a Closedwindow that contains a number of subfields that are used to indicate requested or advertised optional capabilities. The length of the Capability field is 2 octets. Check the hint box and hover the mouse pointer over the various fields for descriptions of each.

Service Set Indentifier (SSID)

The SSID element specifies the identity of an ESS or IBSS. The number of characters of the identity is between 0 and 32. If you enter characters more than 32, it will be truncated to a length of 32. SSID's element ID is 0, and its length is 2 to 34 octets.

Supported Rate

The Supported Rates element specifies up to eight rates in the OperationalRateSet parameter, as described in the MLME-JOIN.request and MLME-START.request primitives, and zero or more BSS membership selectors. The Information field is encoded as 1 to 8 octets, where each octet describes a single Supported Rate or BSS membership selector. Supported Rate's element ID is 1, and its length is 3 to 10 octets.

DSSS (Current Channel)

The DSSS Parameter Set element contains information to allow channel number identification for STAs. Its element ID is 3, and its length is 3 octets.

IBSS (ATIM Window)

The IBSS Parameter Set element contains the set of parameters necessary to support an IBSS. The Information field contains the ATIM Window parameter. Its element ID is 6, and its length is 4 octets.

ERP

Click in this parameter field to open a Closedwindow where you can configure the ERP parameters. The ERP element contains information on the presence of Clause 16 or Clause 17 STAs in the BSS that are not capable of Clause 19 (ERP-OFDM) data rates. It also contains the requirement of the ERP element sender (AP in an infrastructure BSS, STA in an IBSS, or mesh STA in an MBSS) as to the use of protection mechanisms to optimize BSS performance and as to the use of long or short Barker preambles.Its element ID is 42, and its length is 3 octets. Check the hint box and hover the mouse pointer over the various fields for descriptions of each.

HT Capabilities

Click in this parameter field to open a Closedwindow where you can configure HT capability parameters. An HT STA declares that it is an HT STA by transmitting the HT Capabilities element.The HT Capabilities element contains a number of fields that are used to advertise optional HT capabilities of an HT STA. Its element ID is 45, and its length is 28 octets. Check the hint box and hover the mouse pointer over the various fields for descriptions of each.

HT Operation

Click in this parameter field to open a Closedwindow where you can configure HT operation parameters. The HT Capabilities element controls the operation of HT STAs in the BSS. Its element ID is 61, and its length is 24 octets. Check the hint box and hover the mouse pointer over the various fields for descriptions of each.

VHT Capabilities

Click in this parameter field to open a Closedwindow where you can configure VHT capability parameters. A VHT STA declares that it is a VHT STA by transmitting the VHT Capabilities element.The VHT Capabilities element contains a number of fields that are used to advertise optional VHT capabilities of an VHT STA. Its element ID is 191, and its length is 14 octets. Check the hint box and hover the mouse pointer over the various fields for descriptions of each.

VHT Operation

Click in this parameter field to open a Closedwindow where you can configure VHT operation parameters. The VHT Capabilities element controls the operation of VHT STAs in the BSS. Its element ID is 192, and its length is 7 octets. Check the hint box and hover the mouse pointer over the various fields for descriptions of each.