Automotive switch fabric with improved resource reservation
View Patent ↗A vehicle communication network ( 200 ) includes a plurality of network elements ( 208 - 212 ) and a plurality of communication links ( 214 - 230 ) communicatively coupling the network elements in a point-to-point configuration. A portion of the communication capability is reserved according to a class of message traffic.
1. A vehicle comprising:
a plurality of network nodes;
the network nodes being interconnected by connection media for point-to-point communication, the connection media being operable in accordance with one or more communication protocols; and
the connection media having a reserved communication capability, the reserved communication capability being associated with a class of message traffic and an associated buffer for queuing messages disassociated with the class of message traffic, the reserved communication capability being a fraction F of the available time averaged over a time period W, wherein F and W vary by message traffic class and an associated network node, the class of message traffic including at least a message class defined for mission critical traffic comprising at least one of vehicle safety related data, powertrain data, steering data, and braking data.
2. The vehicle of claim 1 , the buffer being associated with one or more of the network nodes.
3. The vehicle of claim 1 , a network node of the plurality network nodes, the network node having a port, the reserved portion being allocated to the port.
4. The vehicle of claim 1 , the buffer being shared between at least a first network node and a second network node of the plurality of nodes.
5. The vehicle of claim 1 , the buffer being operable in accordance with a queuing algorithm.
6. The vehicle of claim 1 , the buffer being operable in accordance with either a first-in-first-out (FIFO) or a last-in-first-out (LIFO) protocol.
7. The vehicle of claim 6 , wherein the selection of the FIFO or LIFO protocol is based upon the class of message traffic.
8. The vehicle of claim 1 , wherein the buffer has a capacity, the buffer capacity being allocated based upon the class of message traffic.
9. The vehicle of claim 1 , the reserved communication capability being dynamically determined.
10. The vehicle of claim 1 , wherein the values F and W are either preconfigured or configurable by a system management function.