Priority packet processing

摘要

A network node in a vehicular network processes packets based on a prioritization scheme. The prioritization scheme uses packet type, priority, source, destination, or other information to determine a priority of the packets. Packets can be stored in one of multiple queues organized according to packet type, or other criteria. In some cases, only one queue is used. The packets are time stamped when put into a queue, and a time to live is calculated based on the timestamp. The time to live, as well as other factors such as packet type, packet priority, packet source, and packet destination can be used to adjust a packet's priority within the queue. Packets are transmitted from the queues in priority order. In some cases, the network node can identify a top-priority packet, and transmit the top priority packet without first storing the packet in the queue.

主权项

1. A method for operating a network module within a vehicle, the method comprising:
receiving a first packet by the network module from a vehicle communication network; interpreting a timestamp of the first packet to determine whether the first packet is a top-priority packet; in response to a determination that the first packet is a top-priority packet, altering priority of the first packet based on the timestamp; and transmitting the first packet using a top-priority bypass mechanism to the vehicle communication network.