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AssigneeMicrosoft Corporation
InventorsMohammad Shabbir Alam, Pradeep Bahl, Shirish R. Koti
Estimating the term…
A method and system for multicast network transmissions dynamically sets response time parameters for handling negative acknowledgments (NAKs). When the sender receives a NAK for a lost packet, it returns an NAK confirmation (NCF), waits for a back-off time before sending requested repair data, and then waits for a “linger time” during which the sender does not respond to other NAKs for the same lost packet. The back-off time and the linger time are dynamically set according to the position of the requested sequence number in the sender's transmit window such that the back-off time is shorter when the requested data is closer to being flushed out of the transmit window. After receiving the NCF, the receiver waits for a timeout period and resends the NAK if no repair data is received. The timeout period for data receipt is dynamically set according to a statistical average time for receiving repair data from the sender and the estimated sender's transmit window size.
A computer-readable medium having computer-executable instructions for a sender of a multicast transmission to perform steps to provide repair data to a receiver of the multicast transmission, the steps comprising:
A computer-readable medium having computer-executable instructions for a receiver of a multicast transmission from a sender to perform steps to request for repair data, the steps comprising:
A computer-readable medium as in claim 47 wherein the steps of receiving a confirmation, setting, waiting, and resending form a data retry cycle, and the computer-readable medium includes further computer-executable instructions to perform the step of determining whether the data retry cycle has been repeated up to a pre-selected maximum number of retries.
A method for a sender of a multicast transmission to provide repair data to a receiver of the multicast transmission, comprising the steps of:
A method for a receiver of a multicast transmission from a sender to request for repair data, the steps comprising:
Dependencies are inferred from the claim text.