Flow control for multi-hop networks
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United States of America Patent
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-
Aug 19, 2014
Grant Date -
Nov 14, 2013
app pub date -
Jul 17, 2013
filing date -
Oct 23, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
Solutions are provided that allow a network device to apply flow control on the MAC layer while taking into account the priority of the frame of traffic. This may be accomplished by generating a frame indicating that traffic flow should be paused, while utilizing a new opcode value, or alternatively by utilizing a new type/length value (possibly combined with a new opcode value). A receiving device may then examine the fields of the frame to determine whether it should use priority-based pausing, and then examine other fields to determine which priority-levels to pause and for how long. This allows for improved efficiency in flow control at the MAC layer. Additionally, the tagged pause frames can be forwarded over multiple hops on Local Area Networks across a Metropolitan Area Network or Wide Area Network.
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