TIME-TRIGGERED ETHERNET-BASED DATA TRANSMISSION METHOD AND NODE DEVICE

摘要

A time-triggered Ethernet (TTE)-based data transmission method and node device, solving the problem of wasting network bandwidth resources in the prior art during TTE-based data transmission; in the method, a main node determines a scheduling period table based on a time-triggered packet; when a node has a to-be-transmitted event-triggered packet, and the node determines, according to the information stored in the scheduling period table, that a physical link occupied by the event-triggered packet is not in conflict with a physical link corresponding to the current time slot, the node transmits the event-triggered packet in the current time slot. The main node does not need to separately allocate time for the event-triggered packet of each node. Therefore, when a node has a to-be-transmitted event-triggered packet, the node can transmit the event-triggered packet in the current time slot as long as the physical link occupied by the event-triggered packet is not in conflict with the physical link corresponding to the current time slot, thus effectively improving data transmission efficiency and network bandwidth utilization.

主权项

1. A method for transmitting data based on a time triggered Ethernet, TTE, the method comprising:
receiving, by each node, a scheduling period table, determined from time-triggered messages, transmitted by a primary node; determining, by a node, when the node has an event-triggered message to be transmitted, a physical link corresponding to the event-triggered message; judging, according to the physical link, timeslot allocation information and information about physical link corresponding to each timeslot, stored in the scheduling period table, whether the physical link collides with a physical link corresponding to a current timeslot; and transmitting the event-triggered message in the current timeslot when it is determined that there is no collision.