Single Queue Model of a Transmission Link
in a Packet Switched Network

• Classical queueing theory can be applied to a transmission link
  • Networking terms are along the top.
    
  • (Queueing theory terms are along the bottom.)

• A packet arriving to an empty system . . .

• immediately enters the transmitter and begins transmission . . .
  

  while arrivals to a busy system are held in the buffer for future transmission.

  For example, a transmission line can ``serve" 500-bit packets at a rate of

  

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• Applications of Queueing Analysis Outside of Networking