ECE487 Midterm: Study Guide for Midterm (Chapter 1-6)
23 Jul 2018
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After a frame (say 0) is transmitted, sn keeps 0 until. The next frame to send (not sent yet) m bits. Set up upon each data frame transmission or retransmission. When a frame is sent/re-sent, if timer is not running, then set up the timer. Timer is stopped when an ack is received and there is no outstanding frame. (only one timer). Set up a timer upon each data frame transmission or retransmission, and stop a timer when the sender knows (by. Ack reception) the corresponding data frame has been received. Ack is issued when a frame (either expected or duplicate) is successfully received. If the expected frame (rn) arrives, slide the receive window by one frame. Ack is issued only when the expected frame (rn) arrives. Then slide the receive window by one frame. Slide the receive window by one or more frames. (here a duplicate frame is a frame that is.
