| 摘要 |
An in-vehicle communication system employs, in addition to a first communication protocol, a second communication protocol in which, in a predetermined transmission restriction management period, communication data can only be transmitted up to a predetermined transmission time limit. A scheduling unit in the transmitting unit in the system sets an upper limit value within the transmission time limit. Times when the second communication protocol may be used are restricted on the basis of the upper limit value. When transmission of communication data by the first communication protocol is delayed by more than a preset decision reference time, the communication data are transmitted by the second communication protocol if this can be done without having the total time of usage of the second communication protocol in the transmission restriction management period exceed the upper limit value. |
