The paradigm is similar to a window sliding sideways to allow entry of fresh packets and reject the ones that have already been acknowledged.
Packet-based systems are based on the idea of sending a batch of data, the packet, along with additional data that allows the receiver to ensure it was received correctly, perhaps a checksum. They are also used to improve efficiency when the channel may include high latency. Sliding window protocols are used where reliable in-order delivery of packets is required, such as in the data link layer ( OSI layer 2) as well as in the Transmission Control Protocol (TCP). ( August 2010) ( Learn how and when to remove this template message)Ī sliding window protocol is a feature of packet-based data transmission protocols.
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