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AssigneeVolkswagen Aktiengesellschaft
InventorsOlaf Krieger, Alexander Meier
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The invention relates to a method for transmitting data via a communications channel (106), in which the data is transmitted with a transmission frame, wherein the transmission frame has at least one prioritisation field (PCP) for establishing the priority of the message and a data field, wherein the prioritisation field (PCP) functions to control the bus access by prioritising the messages. For this purpose, a bus access controller is used, in which the priority of at least the last received data packet is stored in a minimum priority storage cell (330). After receiving a data packet, a timer (320) is started, for which a timeout value is set, which is reset when a following packet is received. After reaching the timeout value, a decrementing of the value stored in the minimum priority storage cell (330) occurs. Thereafter, for the purpose of bus access control, when sending a packet, it is checked whether the priority of the packet to be sent is lower than the value stored in the minimum priority storage cell (330), and the sending of the data packet is prevented if the priority of the packet is lower than the value stored in the minimum priority storage cell (330).
A method for transmitting data on a communication channel, comprising transmitting the data with a transmission frame, wherein the transmission frame has at least one prioritization field for establishing the priority of the message and one data field, wherein the prioritization field serves to regulate the bus access by prioritizing the messages, wherein a bus access control is used in which the priority of at least the last received data packet is saved in a minimum priority memory cell, wherein after a packet is received, starting a timer for which at least one timeout value is set that is reset upon the reception of a following packet, and wherein after the timeout value is reached, decrementing of the value saved in the minimum priority memory cell, and wherein to control bus access when sending a packet, performing a check as to whether the priority of the packet to be sent is less than the value saved in the minimum priority memory cell, and preventing the sending of the packet if the priority of the packet is less than the value saved in the minimum priority memory cell.
Dependencies are inferred from the claim text.