Early acknowledgement of primary packets
First Claim
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1. A method comprising:
- transmitting a primary packet from a source node towards a destination node on a full duplex bus;
receiving a NAK while the primary packet is being transmitted; and
aborting the transmission without sending all of the primary packet.
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Abstract
A method and apparatus for reclaiming bus bandwidth on a full duplex bus. A source node sends a primary packet toward a destination node along a full duplex bus. If the destination node identifies an inability to accept the primary packet, it sends a NAK in the opposite direction along the full duplex bus towards the source node. Upon receiving the NAK, the source node aborts packet transmission of the primary packet which by virtue of the NAK has been identified as futile. Accordingly, the bandwidth, which would have otherwise have been used for the futile packet transmission, can be reclaimed and used for some other purpose.
47 Citations
10 Claims
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1. A method comprising:
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transmitting a primary packet from a source node towards a destination node on a full duplex bus; receiving a NAK while the primary packet is being transmitted; and aborting the transmission without sending all of the primary packet. - View Dependent Claims (2, 3)
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4. A system comprising:
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a full duplex bus; a source node coupled to the bus, the source node to transmit a primary packet; and a destination node coupled to the bus, to receive the primary packet, the destination node to generate a NAK if the primary packet cannot be successfully accepted, the NAK generated concurrently with the receipt of the primary packet. - View Dependent Claims (5, 6, 7)
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8. An apparatus comprising:
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a transceiver; a state machine coupled to the transceiver, the state machine to generate NAK in response to an inability to successfully accept a primary packet, the NAK generated concurrently with an ongoing arrival of the primary packet. - View Dependent Claims (9, 10)
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Specification