Method and system for dynamically adjusting transmit and receive parameters for handling negative acknowledgments in reliable multicast
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United States of America Patent
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Jun 30, 2009
Grant Date -
Jul 7, 2005
app pub date -
Mar 4, 2005
filing date -
Dec 27, 2001
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Abstract
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.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- MICROSOFT TECHNOLOGY LICENSING, LLC
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Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Alam, Mohammad Shabbir | Bellevue, US | 27 | 897 |
Bahl, Pradeep | Redmond, US | 64 | 5070 |
Koti, Shirish R | Redmond, US | 5 | 159 |
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