US 2025/0150370 A1 · METHOD AND DATA BUS HEAD NODE FOR DETERMINING A PROPAGATION DELAY BETWEEN THE HEAD NODE ON ONE SIDE AND A PLURALITY OF OTHER BUS NODES OF THE DATA BUS ON THE OTHER SIDE, CORRESPONDING DATA BUS SYSTEM AND VEHICLE COMPRISING THE DATA BUS SYSTEM

Abstract

The disclosure is concerned with a method for determining a plurality of respective propagation delays between a head node and a plurality of other bus nodes of a data bus system, the determination of the respective propagation delay including an exchange of predetermined measurement messages and, wherein for each measurement of a plurality of measurement cycles the head node selects a selected one of the bus nodes, and each remaining one of the bus nodes is switched from an awake state, in which the bus node responds to measurement messages, to a predetermined sleep state, in which the bus node remains unresponsive to measurement messages, and a propagation delay measurement between the head node and the selected bus node is performed by exchanging the measurement messages, and each remaining bus node is activated from the sleep state by way of at least one wake-up signal.

Claims15

Dependent claims

A method for determining a plurality of propagation delays between a head node and a plurality of bus nodes of a data bus system, the propagation delays determined by an exchange of predetermined measurement messages, the method comprising:

for each measurement cycle of a plurality of measurement cycles:
selecting, by the head node, a selected one of the bus nodes;
switching, by the head node, each bus node of the bus nodes other than the selected one of the bus nodes by way of at least one sleep message from an awake state in which the bus node responds to measurement messages to a predetermined sleep state in which the bus node remains unresponsive to measurement messages;
determining, by the head node, a propagation delay between the head node and the selected one of the bus nodes by exchanging the measurement messages;
and
activating, by the head node, each bus node of the bus nodes other than the selected one of the bus nodes from the sleep state by way of at least one wake-up signal.

3 more elements

Dependencies are inferred from the claim text.

Method and data bus head node for determining a propagation delay between the head node on one side and a plurality of other bus nodes of the data bus on the other side, corresponding data bus system and vehicle comprising the data bus system

Life of this patent

Method and data bus head node for determining a propagation delay between the head node on one side and a plurality of other bus nodes of the data bus on the other side, corresponding data bus system and vehicle comprising the data bus system

Life of this patent

Abstract

Claims15