公开(公告)号：US20210226872A1

公开(公告)日：2021-07-22

申请号：US17201839

申请日：2021-03-15

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Inventor： Yoshihiro UJIIE ,  Tomoyuki HAGA ,  Manabu MAEDA ,  Hideki MATSUSHIMA ,  Takeshi KISHIKAWA ,  Junichi TSURUMI ,  Hisashi KASHIMA ,  Yukino TORIUMI ,  Takuya KUWAHARA

IPC: H04L12/26 ,  H04L12/40 ,  H04L29/06 ,  H04W4/48 ,  H04L12/24

Abstract: An abnormality detection method is provided. The abnormality detection method is for detecting an abnormality that may be transmitted to a bus in an on-board network system. The on-board network system includes a plurality of electronic controllers that transmit and receive messages via the bus in a mobility entity. In the abnormality detection method, for example, a gateway transmits identification information to a server and receives a response determining a unit time. An operation process is performed using feature information based on a number of messages received from the bus per the determined unit time and using a model indicating a criterion in terms of a message occurrence frequency. A judgment is made as to an abnormality according to a result of the operation process.