Protocol Overhead

• Very simple model (point-to-point), so can expect reduced protocol overhead

• For layers in IrDA protocol stack, overhead per packet/frame is:

  • IrLAP = 2 bytes
  • IrLMP = 2 bytes
  • TinyTP = 1 byte

• For perspective, compare to TCP/IP over Ethernet:

  • Ethernet = 18 bytes minimum
  • IP = 20 bytes
  • TCP = 20 bytes

• So IrDA takes advantage of its simpler model, and keeps protocol overhead very low.

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