Multiplex communications – Fault recovery
Reexamination Certificate
2008-07-08
2008-07-08
Marcelo, Melvin (Department: 2616)
Multiplex communications
Fault recovery
C370S230000, C370S235000, C714S748000
Reexamination Certificate
active
07397759
ABSTRACT:
A spurious timeout (STO) response allows a sending device to conservatively adjust congestion state parameters and maintain the packet flow, after detection of the STO. Since occurrence of an STO may be accompanied by data loss, the STO response couples the spurious timeout and the loss event by maintaining a value of previously available bandwidth and increasing a limit that a sending host can send based on a pattern of returned acknowledgements. In particular, the limit is increased by the maximum size of a data segment that the sending host can send each time an acknowledgement is received from the receiving host indicating a successful transmission of a data packet. Thus, a positive data flow may be maintained conservatively while avoiding further packet losses and an unnecessary re-transmission of data packets that may have been successfully received by the receiving host.
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Tan Kun
Zhang Qian
Zhu Wenwu
Lee & Hayes PLLC
Marcelo Melvin
Microsoft Corporation
Ngo Nguyen
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