Once the frame moves to the Physical layer, PHY information is prepended to the frame. At the Data-Link layer (Layer 2), a MAC header, including an address, is prepended to the data and the IP packet is encapsulated inside a frame. At the Network layer (Layer 3), an IP header is prepended to the data that is received from the upper layers. When the data packet reaches the Physical layer, it is transferred as modulated bits on the medium, which may be wired or wireless.Īs you may know, OSI model has seven layers, each layer appends some information to the data that is transmitted from the Application layer (Layer 7) to the Physical layer (Layer 1). Internally, the data transmission starts from the Application layer of one device and travels to the Physical layer while adding some information to the data packet. A bit is a binary digit, 0 or 1, that is a basic unit of communication in the Physical layer of the OSI model.ĭata is processed and transmitted from one device to another on a network. Frames contain information related to the flow control, frame synchronization, and error checking. On the other hand, the frame is a unit of data used in the Data-Link layer of the OSI model. The Network layer of the Open System Interconnection (OSI) model uses the packets as a data unit.
A packet is a unit of data that is transmitted over the network, and contains routing information that helps it to reach its destination. The basic component of any network communication is data, which is in the form of packets, frames, or bits. In this blog, we will discuss the basic components of the 802.11 MAC architecture.
#DETERMINE IP AND MAC HEADER INFORMATION FOR A DATA PACKE SERIES#
Welcome to the 802.11 series of blogs for beginners in the field of wireless networking.
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