Method for processing network messages

Details Method for processing network messages Method for processing network messages

G - Physics

08

C

G08C 19/00 (2006.01) B60R 16/02 (2006.01) H04L 12/40 (2006.01) H04L 29/06 (2006.01) H04L 12/56 (2006.01)

Patent

CA 2298275

A network includes a plurality of electronic control units (ECU) connected with each other and receiving messages via a bus, each message having an identifier portion and a data portion. An ECU processes messages by converting the message identifier to a hash value, comparing the hash value to a plurality of index values stored in a lookup table, the lookup table having relevance values corresponding to each index value, discarding the message if a corresponding relevance value indicates that the message is not relevant to the ECU, inserting the message into memory buffer if a corresponding relevance value indicates that the message is relevant to the ECU, and further processing only selected ones of the messages in the buffer. Preferably, the hash value has fewer data bits than that of the identifier portion of the messages, and the number of unique hash values is the same as a number of index values. The number, N, of index values for the lookup table is determined by selecting from a plurality of potential values for N, a particular N value which minimizes a number of non-relevant messages received by the ECU.

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