Credit based flow control in an asymmetric channel environment
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United States of America Patent
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Mar 22, 2011
Grant Date -
Mar 11, 2010
app pub date -
Nov 17, 2009
filing date -
Nov 29, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A system and method are provided for controlling information flow from a channel service module (CSM) in an asymmetric channel environment. The method provides information for transmission to an OSI model PITY (physical) layer device with a channel buffer. The PHY device channel buffer current capacity is estimated. Information is sent to the channel buffer responsive to estimating the channel buffer capacity, prior to receiving a Polling Result message from the PHY device. Initially, Polling Request messages are sent to the PHY device, and Polling Result messages received from the PHY device, as is conventional. In response to analyzing the Polling messages, a transmission pattern is determined, which includes the amount of information to transmit and a period between transmissions.
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