ABNORMAL FRAME DETERMINATION DEVICE, ABNORMAL FRAME DETERMINATION METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM

    公开(公告)号:US20240214124A1

    公开(公告)日:2024-06-27

    申请号:US18542855

    申请日:2023-12-18

    CPC classification number: H04L1/1803 H04L1/0083

    Abstract: An abnormal frame determination device receives data frames which are transmitted by an electronic control unit at a predetermined period. A receipt interval between a first data frame and a second data frame is calculated. The second data frame is received immediately before receipt of the first data frame. A predetermined value is added to a determination value stored in a storage when the receipt interval is shorter than a threshold. It is determined that the second data frame is an abnormal frame when the determination value reaches a limit value and the receipt interval is longer than a proximity receipt interval that is a criterion for determining whether the first data frame and the second data frame are received in proximity to each other.

    Sequential packet matching
    7.
    发明授权

    公开(公告)号:US11996995B2

    公开(公告)日:2024-05-28

    申请号:US17622967

    申请日:2019-07-22

    CPC classification number: H04L43/028 H04L1/0083 H04L41/12 H04L43/062 H04L45/38

    Abstract: Disclosed herein is a method for evaluating data traffic in a communication network. The method comprising establishing a protocol session between a control plane, CP, node and a user plane, UP, node and configuring, by the CP node, a first detection rule to be used for event notification, and at least one next detection rule to be used for traffic detection. The first detection rule comprises an indicator indicating the highest precedence, and identifies a first instruction rule indicating an event to be notified and a continuation flag indicating evaluation of at least one next detection rule. The at least one next detection rule comprises an indicator indicating a lower precedence than the one in the first detection rule and identifies a next instruction rule to be applied to a matched traffic. The method also comprises determining, at the UP node and based on the continuation flag, whether the received packet matches any detection rule amongst the at least one next detection rule from higher to lower precedence.

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