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scripts default iconprotocol analysis (Scripts) Publisher's description

Go-Back-N ARQ is a specific instance of the Automatic Repeat-reQuest (ARQ) Protocol

Go-Back-N ARQ is a specific instance of the Automatic Repeat-reQuest (ARQ) Protocol, in which the sending process continues to send a number of frames specified by a window size even without receiving an ACK packet from the receiver. It is a special case of the general sliding window protocol with the transmit window size of N and receive window size of 1.

The receiver process keeps track of the sequence number of the next frame it expects to receive, and sends that number with every ACK it sends. The receiver will ignore any frame that does not have the exact sequence number it expects – whether that frame is a "past" duplicate of a frame it has already ACK'ed or whether that frame is a "future" frame past the last packet it is waiting for. Once the sender has sent all of the frames in its window, it will detect that all of the frames since the first lost frame are outstanding, and will go back to sequence number of the last ACK it received from the receiver process and fill its window starting with that frame and continue the process over again.

System Requirements:

MATLAB 7.9 (2009b)
Program Release Status: Major Update
Program Install Support: Install and Uninstall

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