Patent ID: 9049049
Filing Date: 2015-06-02
Classification: H04L

Abstract:
1. A routing method in an in-vehicle gateway device which is connected to a plurality of different networks and performs transmitting and receiving of data between the above networks, the method comprising: classifying each of the networks into any of an information-system network or a control-system network or a safety-system network, based on data flowing in each of the networks; determining a destination network of data received from each of the networks, based on a table set in advance; and processing and editing a data to transfer in response to level of importance of each of the networks, in the case where the above destination network is different from a receiver network; wherein the classifying further comprises: monitoring data volume flowing on each network connecting to the in-vehicle gateway device and frequency of transmission of the same kind of data; classifying such a network that has the transmission frequency of data of equal to or lower than threshold value of transmission frequency set in advance, and has a network bus load rate of over threshold value of the bus load set in advance, as an information-system; classifying such a network that has the transmission frequency of data of equal to or higher than threshold value of transmission frequency set in advance, and has network bus load rate of over threshold value of the bus load set in advance, as a control-system; and classifying such a network that has the transmission frequency of data of equal to or lower than the transmission frequency set in advance, and has the network bus load rate of equal to or lower than the bus load set in advance, as a safety-system.