scroll mode. go- back n arqteams:bandwidth brothersdeadlockfostersnew creatorsrothmans Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Go – Back – N ARQ provides for sending multiple frames before receiving the acknowledgment for the first frame. Go – Back – N ARQ. If you continue browsing the site, you agree to the use of cookies on this website. The frames are sequentially numbered and … window size. N should be always greater than 1 in order to implement pipelining. choosing a new protocol restarts the simulation. The three main characteristic features of GBN are: Sender Window Size (WS) It is N itself. protocol Go back N Selective Repeat. If we say the protocol is GB10, then Ws = 10. Efficiency Of GBN = N/(1+2a) where a = Tp/Tt It uses the concept of sliding window, and so is also called sliding window protocol. time a packet takes from one station to the other. sets the window size for the windows. It can transfer more than one frame at a time thus it is faster than the 1-bit sliding window protocol. The send window is an abstract concept defining an imaginary box of size 2m − … In this case when a damaged frame arrives the receiver simply discards all the subsequent frames. change the style the window scrolls. GO BACK N Protocol. In the Go-Back-N Protocol, the sequence numbers are modulo 2m, where m is the size of the sequence number field in bits. 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 acknowledgement (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. timeout. end to end delay. Go Back N (GBN) Protocol. For N = 1, it reduces to Stop and Wait protocol. Figure- Send window for Go-Back-N 10. Note 9.