System and method for managing ethernet communication network for use in vehicle

摘要

A system and method for managing a vehicle Ethernet communication network are disclosed. More specifically, each unit in a vehicle Ethernet communication network is configured to initially enter a power-on (PowerOn) mode when is applied to each unit of the vehicle to initialize operational programs. Once powered on, each unit enters a normal mode in which a node for each unit participates in a network to request the network. Subsequently, each unit enters a sleep indication (SleepInd) mode where other nodes are not requested even though the network has already been requested by the other nodes. A communication mode is then terminated at each unit and each unit enters a wait bus sleep (WaitBusSleep) mode in which all nodes connected to the network are no longer in communication and are waiting to switch to sleep mode. Finally, each unit is powered off to prevent communication between units in the network.

主权项

1. A method for managing a vehicle communication network in which a node of a plurality of nodes for each internal unit of a plurality of internal units of the vehicle communication network establishes a communication mode, the method comprising:
entering, by each internal unit of the plurality of internal units in the vehicle communication network, a first operation mode of a power-on (PowerOn) mode wherein power is provided to each internal unit of the plurality of internal units in the vehicle communication network to initialize each operation mode in each internal unit of the plurality of internal units; entering, by each internal unit of the plurality of internal units in the vehicle communication network, a second operation mode of a normal mode wherein the node of the plurality of nodes in each internal unit of the plurality of internal units participates in the vehicle communication network and the vehicle communication network will request to establish the communication mode; entering, by each internal unit of the plurality of internal units in the vehicle communication network, a third operation mode of a sleep indication (SleepInd) mode wherein other nodes of the plurality of nodes are not requested even when the vehicle communication network is requested by the other nodes of the plurality of nodes; terminating, by each internal unit of the plurality of internal units in the vehicle communication network, the communication mode; entering, by each internal unit of the plurality of internal units in the vehicle communication network, a fourth operation mode of a wait bus sleep (WaitBusSleep) mode wherein all nodes of the plurality of nodes that are connected to the vehicle communication network are not in communication and are awaiting to enter a sleep mode; entering, by each internal unit of the plurality of internal units in the vehicle communication network, the third operation mode of the sleep indication (SleepInd) mode when a communication message occurs in the wait bus sleep (WaitBusSleep) mode; entering, by each internal unit of the plurality of internal units in the vehicle communication network, a fifth operation mode of the sleep mode when the wait bus sleep (WaitBusSleep) is maintained for a predetermined time; and entering, by each internal unit of the plurality of internal units in the vehicle communication network, a sixth operation mode of a power-off mode in which each internal unit of the plurality of internal units is powered off thereby preventing each internal unit of the plurality of internal units from communicating with another internal unit of the plurality of internal units in the vehicle communication network, wherein the sleep indication (SleepInd) mode is between the normal mode and the wait bus sleep (WaitBusSleep) mode, and wherein basic operations of the sleep indication (SleepInd) mode are identical to those of the normal mode, but the sleep indication (SleepInd) mode will no longer be connected and will not awake the vehicle communication network.