Stop and Wait Algorithm at receiver(node B) (with initial condition RNEO) 1)Whenever an error-free frame is received from a with a sequence equal to RN, release received packet to higher layer and increment RN 2)At arbitrary times, but within bounded delay after receiving any error free frame from A, transmit a frame to a containing rn in the request fieldStop and Wait Algorithm at receiver (node B) (with initial condition RN=0) 1) Whenever an error-free frame is received from A with a sequence # equal to RN, release received packet to higher layer and increment RN. 2) At arbitrary times, but within bounded delay after receiving any error free frame from A, transmit a frame to A containing RN in the request # field