framestructure
Frame structure refers to the organization and layout of a data unit called a frame within a communication protocol or data processing system. A frame typically consists of fields that serve distinct roles, such as synchronization, addressing, control, payload, and error detection. The exact structure varies by protocol, but common elements include a preamble or synchronization header to align timing, a header with addressing or type information, a payload carrying the user data, and a trailer or checksum (such as a CRC or FCS) for error detection. Some frames also include a length field, a sequence number, or parity bits to support flow control and ordering.
Frames can be fixed-length or variable-length. Fixed-length frames maintain a constant size, aiding simple synchronization and
Design goals for a frame structure typically include clear boundaries, low overhead, reliable error detection, support