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公开(公告)号：US20250158938A1
公开(公告)日：2025-05-15
申请号：US18823261
申请日：2024-09-03
Applicant: NXP B.V.
Inventor： Rajeev Roy , Bernard Francois St-Denis , Stefan Singer
IPC: H04L49/25 , H04L49/00 , H04L49/354
Abstract: A system comprising: a first and second network switch each comprising a plurality of ports for coupling to one or more devices; wherein the first and second network switches are communicably coupled; wherein the first network switch, based on receipt of a network frame at its ports, is configured to: process the network frame based on its content and a first rule set to determine network frame forwarding information for the network frame; add metadata to the network frame based on the result of said processing; forward the network frame with the added metadata to the second network switch; wherein the second network switch, based on receipt of the network frame, is configured to: read the metadata and process the network frame based on the network frame forwarding information as determined by the first network switch.
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公开(公告)号：US11818053B2
公开(公告)日：2023-11-14
申请号：US17663867
申请日：2022-05-18
Applicant: NXP B.V.
Inventor： Bernard Francois St-Denis
Abstract: A sequence recovery method executed by a node in a time-sensitive network, the method comprising receiving a packet having a sequence number, determining whether the sequence number is within a predetermined range of a reference sequence number, wherein the reference sequence number is a current latest sequence number accepted by the node, and wherein the predetermined range comprises a history range and a future range, wherein the history range has a length equal to a history length and includes the reference sequence number and a predetermined number of consecutive sequence numbers that are immediately earlier than the reference sequence number, and the future range has a length equal to a future length and defines a predetermined number of consecutive sequence numbers that are immediately later than the reference sequence number, wherein the future length is greater than the history length.
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公开(公告)号：US12267153B2
公开(公告)日：2025-04-01
申请号：US17660222
申请日：2022-04-22
Applicant: NXP B.V.
Inventor： Mark Andrew Schellhorn , Bernard Francois St-Denis , John Pillar
Abstract: A network station scheduling a frame to be transmitted by a transmitter of the network station at a transmit time. The transmit time is based on a first clock. A request is then issued to a direct memory access (DMA) circuit to retrieve the frame from a system memory. An advance time offset associated with the first clock is determined based on an estimated DMA latency of the DMA circuit. A frame retrieved by the DMA circuit is provided to a staging circuit. When a time of a second clock reaches the transmit time of the frame in the staging circuit, the frame is transmitted at the transmit time. In an example, a time of the first clock is ahead of a time of the second clock by the advance time offset.
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4.发明公开公开(公告)号：US20230344539A1
公开(公告)日：2023-10-26
申请号：US17660222
申请日：2022-04-22
Applicant: NXP B.V.
Inventor： Mark Andrew Schellhorn , Bernard Francois St-Denis , John Pillar
CPC classification number: H04J3/0667 , H04J3/0697 , G06F13/287
Abstract: A network station scheduling a frame to be transmitted by a transmitter of the network station at a transmit time. The transmit time is based on a first clock. A request is then issued to a direct memory access (DMA) circuit to retrieve the frame from a system memory. An advance time offset associated with the first clock is determined based on an estimated DMA latency of the DMA circuit. A frame retrieved by the DMA circuit is provided to a staging circuit. When a time of a second clock reaches the transmit time of the frame in the staging circuit, the frame is transmitted at the transmit time. In an example, a time of the first clock is ahead of a time of the second clock by the advance time offset.
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Patent Agency Ranking
公开(公告)号：US12289165B2
公开(公告)日：2025-04-29
申请号：US17808189
申请日：2022-06-22
Applicant: NXP B.V.
Inventor： Bernard Francois St-Denis , Allen Lengacher , Feng Xian
IPC: H04L47/34 , H04L1/00 , H04L1/1607 , H04L1/20 , H04L43/0829 , H04L47/32
Abstract: A sequence recovery method is executed by a node in a time-sensitive network configured to transmit and receive packets The method includes providing a state variable, having a first state in which a packet loss counter is disabled, and a second state in which the packet loss counter is enabled. The packet loss counter can only be incremented to count lost packets when the loss state variable is in the second state. This method enhances the IEEE 802.1CB standard.
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公开(公告)号：US20220416947A1
公开(公告)日：2022-12-29
申请号：US17808189
申请日：2022-06-22
Applicant: NXP B.V.
Inventor： Bernard Francois St-Denis , Allen Lengacher , Feng Xian
IPC: H04L1/16 , H04L43/0829 , H04L1/20 , H04L1/00
Abstract: A sequence recovery method is executed by a node in a time-sensitive network configured to transmit and receive packets The method includes providing a state variable, having a first state in which a packet loss counter is disabled, and a second state in which the packet loss counter is enabled. The packet loss counter can only be incremented to count lost packets when the loss state variable is in the second state. This method enhances the IEEE 802.1CB standard.
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7.发明公开公开(公告)号：US20230283565A1
公开(公告)日：2023-09-07
申请号：US17653801
申请日：2022-03-07
Applicant: NXP B.V.
Inventor： Bernard Francois St-Denis , Sathish Vallipuram
CPC classification number: H04L47/56 , H04L49/252 , H04L49/251
Abstract: Cut-through frame transfer or store-and-forward frame transfer of a frame in an network switch is disclosed. A frame is received from an input port of the switch. A time period in a cycle time when the frame is received and a stream identification of the frame is determined. One of the cut-through frame transfer and the store-and-forward frame transfer of the frame is performed based on the time period in the cycle time when the frame was received and the stream identification.
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8.发明授权公开(公告)号：US11876726B2
公开(公告)日：2024-01-16
申请号：US17653801
申请日：2022-03-07
Applicant: NXP B.V.
Inventor： Bernard Francois St-Denis , Sathish Vallipuram
CPC classification number: H04L47/56 , H04L49/251 , H04L49/252
Abstract: Cut-through frame transfer or store-and-forward frame transfer of a frame in an network switch is disclosed. A frame is received from an input port of the switch. A time period in a cycle time when the frame is received and a stream identification of the frame is determined. One of the cut-through frame transfer and the store-and-forward frame transfer of the frame is performed based on the time period in the cycle time when the frame was received and the stream identification.
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公开(公告)号：US20220385588A1
公开(公告)日：2022-12-01
申请号：US17663867
申请日：2022-05-18
Applicant: NXP B.V.
Inventor： Bernard Francois St-Denis
Abstract: A sequence recovery method executed by a node in a time-sensitive network, the method comprising receiving a packet having a sequence number, determining whether the sequence number is within a predetermined range of a reference sequence number, wherein the reference sequence number is a current latest sequence number accepted by the node, and wherein the predetermined range comprises a history range and a future range, wherein the history range has a length equal to a history length and includes the reference sequence number and a predetermined number of consecutive sequence numbers that are immediately earlier than the reference sequence number, and the future range has a length equal to a future length and defines a predetermined number of consecutive sequence numbers that are immediately later than the reference sequence number, wherein the future length is greater than the history length.
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