What is the header size of IEEE 802.11 MAC frame?

The maximum size for an IEEE 802.11 MPDU is 2346 octets. Of that, the IEEE 802.11 frame’s MAC header (24 or 30 octets) plus the MAC trailer (i.e., the FCS, at four octets) consumes a total of 28 or 34 octets, which leaves a remainder of 2312 or 2316 octets in which to carry the MPDU payload.

How many MAC addresses are used in a 802.11 MAC header?

4 address fields
802.11 frame can have upto 4 address fields in the MAC header. 802.11 frames typically use only 3 of the MAC address fields, but frames send within WDS (Wireless Distribution System) requires all 4 MAC address fields.

How many address fields does an 802.11 header have?

four address fields
There are four address fields inside a MAC Header.

What is a MAC header?

Mac-header definition Filters. (Media Access Control header) The data fields added at the beginning of a network packet in order to turn it into a frame to be transmitted. A MAC header typically refers to an Ethernet header, which is the predominant network access method in use today.

What is the 802.11 MAC protocol?

The IEEE 802.11 MAC protocol is the standard for wireless LANs; it is widely used in testbeds and simulations for wireless multihop ad hoc networks. However, this protocol was not designed for multihop networks.

What are the MAC address fields in the 802.11 frame?

There are four address fields in the MAC frame format. These fields are used to indicate the basic service set identifier (BSSID), source address (SA), destination address (DA), transmitting STA address (TA), and receiving STA address (RA).

What is the total size of the Ethernet header trailer?

The ethernet frame thus consists of the preamble (8 bytes), the MAC header (14 bytes), data and the trailer (4 bytes).

What is a MAC frame?

The MAC frames in the MAC sublayer are described as a sequence of fields in specific order. Each figure in Clause 7 depicts the fields/subfields as they appear in the MAC frame and in the order in which they are passed to the PHY, from left to right where the leftmost bit is transmitted first in time.

How do you calculate header length?

minimum value of header length is 20 Bytes but we don’t have sufficient bits to represent 20 so we use scaling technique, i.e. 0101 (5) will represent 4 X 5 = 20 Bytes, here scaling factor is 4. maximum value possible with 4 bits is 15. So maximum header length possible is 4 X 15 = 60 Bytes.

What is Ethernet header and trailer?

A Frame includes data to be transmitted and also a header and a trailer which contain information that the network adapters on the ethernet need to process the frame.