In the seven-layer OSI model of computer networking, media access control (MAC) data communication protocol is a sublayer of the data link layer, which itself is layer 2. The MAC sublayer provides addressing and channel access control mechanisms that make it possible for several terminals or network nodes to communicate within a multiple access network that incorporates a shared medium, e.g. Ethernet. The hardware that implements the MAC is referred to as a medium access controller.
The MAC sublayer acts as an interface between the logical link control (LLC) sublayer and the network's physical layer. The MAC layer emulates a full-duplex logical communication channel in a multi-point network. This channel may provide unicast, multicast or broadcast communication service.
Multiplex techniques |
---|
Circuit mode |
TDM · FDM/WDM · SDM Polarization multiplexing Spatial multiplexing (MIMO) OAM multiplexing |
Statistical multiplexing |
Packet mode · Dynamic TDM FHSS · DSSS OFDMA · SC-FDM · MC-SS |
Related topics |
Channel access methods Media Access Control (MAC) |
Read more about Media Access Control: Functions Performed in The MAC Sublayer, Addressing Mechanism, Channel Access Control Mechanism, Common Multiple Access Protocols Famous quotes containing the words media, access and/or control:“One can describe a landscape in many different words and sentences, but one would not normally cut up a picture of a landscape and rearrange it in different patterns in order to describe it in different ways. Because a photograph is not composed of discrete units strung out in a linear row of meaningful pieces, we do not understand it by looking at one element after another in a set sequence. The photograph is understood in one act of seeing; it is perceived in a gestalt.” “Lesbian existence comprises both the breaking of a taboo and the rejection of a compulsory way of life. It is also a direct or indirect attack on the male right of access to women.” “Our culture still holds mothers almost exclusively responsible when things go wrong with the kids. Sensing this ultimate accountability, women are understandably reluctant to give up control or veto power. If the finger of blame was eventually going to point in your direction, wouldnt you be?” |