SELECTIVE ACKNOWLEDGMENT POLLING BASED ON KNOWN PROTOCOL DELAYS AND BANDWIDTH CONSIDERATIONS
Original Publication Date: 1999-Jan-01
Included in the Prior Art Database: 2002-Jul-31
Most protocols operate by setting a timer when data is transmitted. If no acknowledgment for this data is received before the timer expires then the data is transmitted. An enhancement to this is to send a message when the timer expires requesting a new acknowledgment. This technique is sometimes referred to as Acknowledgment Polling. This tech- nique saves unnecessary bandwidth since an acknowledgment, once received, may result in a reduction in the retransmission of data. It also serves as a means to check if the receiving peer is still there.