Wednesday, January 9, 2008

CCSDS packet definition

A packet is a block of data with length that can vary between successive packets, ranging from 7 to 65,542 bytes, including the packet header.

  • Packetized data are transmitted via frames, which are fixed-length data blocks. The size of a frame, including frame header and control information, can range up to 2048 bytes.
  • Packet sizes are fixed during the development phase.

Because packet lengths are variable but frame lengths are fixed,packet boundaries usually do not coincide with frame boundaries.

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