The sending and receiving window may not have the same size or any upper or lower limits.Any frame received with a sequence number outside the receiving window is discarded.The size of the receiving window is fixed at a specified initial size.It allows receiving and acknowledging of multiple frames. All the frames in a sending window can be lost or damaged and hence must be saved in memory or buffer till they are acknowledged.Ī Receiving Window is a set of sequence numbers that is maintained by the receiver.The sender can transmit a maximum number of frames before receiving any acknowledgment without blocking (Pipelining).Sender Window is a set of sequence numbers maintained by the sender corresponding to the frame sequence numbers of frames sent out but not yet acknowledged. For stop-and-wait sliding window protocol, 𝑛 = 1. Each outbound frame contains a sequence number ranging from 0 to 2 𝑛−1(𝑛 bit field).If no new data frames are ready for transmission in a specified time, a separate acknowledgment frame is generated to avoid time-out.
Here, the sender can send multiple frames without having to wait for acknowledgments.The sliding window protocol is a flow control protocol that allows both link nodes A and B to send and receive data and acknowledgments simultaneously.
