KR20180038957A - Operation method of communication node for mirroring in vehicle network - Google Patents

Abstract

Disclosed is an operation method of a communication node for mirroring in a vehicle network. According to the present invention, the operation method of a communication node, as a method for operating a first communication node among a plurality of communication nodes included in an Ethernet-based vehicle network, comprises the steps of: receiving a first message representing an operation of a first function of a vehicle from a second communication node of the plurality of communication nodes; determining a third communication mode performing a second function corresponding to the first function among the plurality of communication nodes; determining at least one communication node providing data associated with the second function of the plurality of communication nodes; and establishing port mirroring on the first function that a second message received from at least one communication node is mirrored to the third communication node.

Description

[0001] OPERATION METHOD OF COMMUNICATION NODE FOR MIRRORING IN VEHICLE NETWORK [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of operating a communication node for mirroring a switch in a network, and more particularly, to a method of operating a communication node for implementing a vehicular electric field system through a mirroring function of an Ethernet switch in an Ethernet- ≪ / RTI >

BACKGROUND ART [0002] With the rapid progress of electronicization of vehicle parts, the types and number of electronic devices mounted on vehicles have been greatly increased. Electronic devices can be largely used in a power train control system, a body control system, a chassis control system, a vehicle network, a multimedia system, and the like. The powertrain control system may mean an engine control system, an automatic shift control system, and the like. The body control system may refer to a body electrical equipment control system, a convenience device control system, a lamp control system, and the like. The chassis control system may refer to a steering control system, a brake control system, a suspension control system, and the like. The vehicle network may refer to a controller area network (CAN), a FlexRay-based network, or a MOST (media oriented system transport) based network. The multimedia system may refer to a navigation system, a telematics system, an infotainment system, or the like.

The electronic devices constituting each of these systems and systems are connected through a vehicle network, and a vehicle network is required to support the functions of each of the electronic devices. CAN can support transmission rates of up to 1Mbps, support automatic retransmission of collided frames, and support CRC (cyclic redundancy check) based error detection. FlexRay-based networks can support transmission speeds of up to 10 Mbps, support simultaneous transmission of data over two channels, and synchronous data transmission. The MOST-based network is a communication network for high-quality multimedia and can support transmission rates of up to 150Mbps.

On the other hand, vehicle telematics systems, infotainment systems, and enhanced safety systems require high transmission speeds and system scalability, and CAN and FlexRay-based networks do not fully support them. MOST-based networks can support higher transmission speeds than CAN- and FlexRay-based networks, but MOST-based networks are costly for all vehicle networks. Due to these problems, an ethernet-based network can be considered as a vehicle network. An Ethernet-based network can support bidirectional communication through a pair of windings and can support transmission rates up to 10 Gbps.

Specifically, an Ethernet-based vehicle network can implement an electric vehicle system through a switch capable of Ethernet-based communication. For example, a switch may be implemented in a full-field system by performing the function of processing data received via an electronic device contained in a vehicle network and transmitting the processed data to an outputable electronic device. However, in recent years, the number of electronic devices included in the vehicle network has increased, and accordingly, data to be processed has increased, so that it is difficult to realize an electric vehicle system of a vehicle.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of operating a communication node for implementing a vehicular electric field system through a mirroring function of an Ethernet switch in an Ethernet-based vehicle network.

According to another aspect of the present invention, there is provided a method of operating a communication node for mirroring in a vehicle network, the method comprising: operating the first communication node among a plurality of communication nodes included in an ethernet- Receiving a first message indicating an operation of a first function of a vehicle from a second one of the plurality of communication nodes, performing a second function corresponding to the first one of the plurality of communication nodes Determining at least one communication node that provides data associated with the second one of the plurality of communication nodes, and determining a second message received from the at least one communication node And setting port mirroring for the first function to be mirrored to the third communication node.

Here, the step of determining the third communication node may include a function code for each of a plurality of functions performed in the vehicle, a target address for each of the function codes, The third communication node can be determined based on the first table including the VLAN ID (Virtual LAN identifier).

Wherein the step of determining the third communication node comprises the steps of: identifying a target address corresponding to the function code of the first function in the first table; and determining a communication node indicated by the identified target address in the first function And determining the third communication node to perform the corresponding second function.

The determining of the at least one communication node may include determining a port number of a plurality of ports included in the first communication node, a MAC address of a communication node connected through the plurality of ports, And the second table including the VLAN ID of the communication node connected through the ports of the at least one communication node.

Wherein determining the at least one communication node comprises: identifying at least one port having a VLAN ID equal to a VLAN ID corresponding to a function code of the first function in the second table; And determining that the connected communication node is the at least one communication node providing data associated with the second function.

The setting of the port mirroring may include setting a port connecting between the first communication node and the third communication node as a target port for mirroring the first function, And setting a port connecting the node and the at least one communication node to a mirroring port for mirroring the first function.

Wherein the method of operating the first communication node further comprises: when receiving the second message from the at least one communication node via the mirroring port, transmitting the second message to the third communication node via the target port Step < / RTI >

Wherein the first communication node is a switch included in the vehicle network and the second communication node, the third communication node, and the at least one communication node are end nodes connected to the first communication node (end node.

According to another aspect of the present invention, there is provided a method of operating a communication node for mirroring in a vehicle network, the method comprising: operating a first communication node among a plurality of communication nodes included in an ethernet- The method comprising: receiving a message including data related to a function of a vehicle from at least one of the plurality of communication nodes; determining whether port mirroring is set for the function; And processing the message based on whether or not port mirroring is set for the port mirroring.

The step of determining whether the port mirroring is established may include a step of, when a port connecting between the first communication node and the at least one communication node is a mirroring port for mirroring the function, It can be determined that port mirroring is set.

If the port connecting the first communication node and the at least one communication node is not a mirroring port for mirroring the function, the step of determining whether or not the port mirroring is established may include: It can be determined that it is not set.

Here, the processing of the message may transmit the message to a third communication node connected through a target port for mirroring the function, when port mirroring for the function is set.

Here, the processing of the message may delete the message if port mirroring for the function is not set.

Here, the first communication node may be a switch included in the vehicle network, and the at least one communication node and the second communication node may be an end node connected to the first communication node.

According to another aspect of the present invention, there is provided a communication node for performing a method of operating a communication node for mirroring in a vehicle network, the communication node being a first communication node of an Ethernet-based vehicle network, And a memory in which at least one instruction executed via the processor is stored, wherein the at least one instruction is an instruction from the second communication node of the plurality of communication nodes to indicate an operation of the first function of the vehicle 1 message, determining a third one of the plurality of communication nodes to perform a second function corresponding to the first function, and providing data related to the second one of the plurality of communication nodes And a second message received from the at least one communication node is sent to the third communication node, Establishing port mirroring for the first function to be mirrored; and when receiving the second message from the at least one communication node, transmitting the second message to the third communication based on the established port mirroring, Node.

Here, the at least one command may include a function code for each of a plurality of functions performed in the vehicle in the process of determining the third communication node, a target address for each of the function codes, And to determine the third communication node based on a first table including a VLAN ID (Virtual LAN identifier) for each of the function codes.

Wherein the at least one command identifies a target address corresponding to a function code of the first function in the first table in the process of determining the third communication node, As the third communication node performing the second function corresponding to the first function.

Here, the at least one command may include a port number of a plurality of ports included in the first communication node in determining the at least one communication node, a MAC address of a communication node connected through the plurality of ports, MAC address) and a VLAN ID of a communication node connected through the plurality of ports.

Wherein the at least one command identifies at least one port having the same VLAN ID as the VLAN ID corresponding to the function code of the first function in the second table in the process of determining the at least one communication node, And determine the communication node connected through the identified port as the at least one communication node providing data related to the second function.

Herein, the at least one command sets a port connecting between the first communication node and the third communication node as a target port for mirroring the first function in the process of setting the port mirroring And a port connecting the first communication node and the at least one communication node to a mirroring port for mirroring the first function.

According to the present invention, it is possible to reduce the time required to process data in a vehicle network, thereby improving the efficiency of implementing an electric vehicle system. In addition, the method of operating a communication node according to the present invention has the effect of processing data received through a communication method other than the Ethernet-based communication method without processing by another gateway.

1 is a block diagram illustrating an embodiment of a topology of a vehicle network.
2 is a block diagram showing an embodiment of a structure of a communication node constituting a vehicle network.
3 is a block diagram illustrating a method of operating a communication node for mirroring in a vehicle network according to an embodiment of the present invention.
4 is a flowchart illustrating a method of operating a communication node for mirroring in a vehicle network according to an embodiment of the present invention.
5 is a flowchart illustrating a method for determining a third communication node in the method of operation of the communication node shown in FIG.
6 is a flowchart illustrating a method for determining at least one communication node in the method of operation of the communication node shown in FIG.
7 is a flowchart illustrating a method of setting port mirroring in the method of operation of the communication node shown in FIG.
8 is a flowchart illustrating a method of operating a communication node for mirroring in a vehicle network according to another embodiment of the present invention.
9 is a block diagram illustrating a method of operating a communication node for mirroring in a vehicle network according to another embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted in an ideal or overly formal sense unless explicitly defined in the present application Do not.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In order to facilitate the understanding of the present invention, the same reference numerals are used for the same constituent elements in the drawings and redundant explanations for the same constituent elements are omitted.

1 is a block diagram illustrating one embodiment of a network topology of a vehicle network.

1, a communication node constituting a vehicle network may refer to a gateway, a switch (or a bridge), an end node, or the like. The gateway 100 may be connected to at least one switch 110, 110-1, 110-2, 120, or 130, and may connect different networks. For example, the gateway 100 may include a switch that supports a controller area network (CAN) (or FlexRay, media oriented system transport (MOST), local interconnect network (LIN) (ethernet) protocol can be connected between switches. Each of the switches 110, 110-1, 110-2, 120 and 130 may be connected to at least one end node 111, 112, 113, 121, 122, 123, 131, 132, Each of the switches 110, 110-1, 110-2, 120 and 130 may interconnect the end nodes 111, 112, 113, 121, 122, 123, 131, 132 and 133, It is possible to control the nodes 111, 112, 113, 121, 122, 123, 131, 132,

The end nodes 111, 112, 113, 121, 122, 123, 131, 132 and 133 may mean an electronic control unit (ECU) for controlling various devices included in the vehicle. For example, the end nodes 111, 112, 113, 121, 122, 123, 131, 132, 133 may be infotainment devices (e.g., a display device, a navigation device, (An around view monitoring device), and the like.

The communication nodes (i.e., gateways, switches, end nodes, etc.) that constitute the vehicle network may be a star topology, a bus topology, a ring topology, a tree topology, Topology, and so on. Further, each of the communication nodes constituting the vehicle network may support the CAN protocol, the FlexRay protocol, the MOST protocol, the LIN protocol, the Ethernet protocol, and the like. Embodiments according to the present invention can be applied to the network topology described above, and the network topology to which the embodiments according to the present invention are applied is not limited to this, and can be variously configured.

2 is a block diagram showing an embodiment of a structure of a communication node constituting a vehicle network.

Referring to FIG. 2, a communication node 200 constituting a vehicle network may include a PHY layer unit 210 and a controller unit 220. In addition, the communication node 200 may further include a regulator (not shown) for supplying power. At this time, the controller unit 220 may be implemented including a medium access control (MAC) layer. PHY layer unit 210 may receive signals from other communication nodes or may transmit signals to other communication nodes. The controller unit 220 may control the PHY layer unit 210 and may perform various functions (e.g., infotainment function, etc.). The PHY layer unit 210 and the controller unit 220 may be implemented as one SoC (System on Chip) or a separate chip.

The PHY layer unit 210 and the controller unit 220 may be connected through a media independent interface (MII) 230. The MII 230 may refer to an interface defined in IEEE 802.3, and may be configured as a data interface and a management interface between the PHY layer unit 210 and the controller unit 220. One of the interfaces of RMII (reduced MII), GMII (gigabit MII), RGMII (reduced GMII), SGMII (serial GMII) and XGMII (10 GMII) may be used instead of MII 230. The data interface may include a transmission channel and a reception channel, and each of the channels may have independent clock, data, and control signals. The management interface may be configured as a two-signal interface, one for the clock and the other for the data.

The PHY layer unit 210 may include a PHY layer interface unit 211, a PHY layer processor 212 and a PHY layer memory 213 and the like. The configuration of the PHY layer unit 210 is not limited thereto, and the PHY layer unit 210 may be configured in various ways. The PHY layer interface unit 211 may transmit signals received from the controller unit 220 to the PHY layer processor 212 and may transmit signals received from the PHY layer processor 212 to the controller unit 220. [ PHY layer processor 212 may control the operation of PHY layer interface unit 211 and PHY layer memory 213, respectively. The PHY layer processor 212 may perform modulation of the signal to be transmitted or demodulation of the received signal. The PHY layer processor 212 may control the PHY layer memory 213 to input or output a signal. The PHY layer memory 213 can store the received signal and output the stored signal upon request of the PHY layer processor 212. [

The controller unit 220 may perform monitoring and control for the PHY layer unit 210 via the MII 230. The controller unit 220 may include a controller interface unit 221, a controller processor 222, a main memory 223, an auxiliary memory 224, and the like. The configuration of the controller unit 220 is not limited thereto, and the controller unit 220 can be configured in various ways. The controller interface unit 221 can receive signals from the PHY layer unit 210 (i.e., the PHY layer interface unit 211) or an upper layer (not shown) and send the received signals to the controller processor 222 And may transmit signals received from the controller processor 222 to the PHY layer unit 210 or higher layer. The controller processor 222 may further include independent memory control logic or integrated memory control logic for controlling the controller interface unit 221, the main memory 223 and the auxiliary memory 224. The memory control logic may be included in the main memory 223 and the auxiliary memory 224, or may be included in the controller processor 222 and implemented.

Each of the main memory 223 and the auxiliary memory 224 may store the signal processed by the controller processor 222 and output the stored signal at the request of the controller processor 222. [ The main memory 223 may mean a volatile memory (e.g., random access memory (RAM), etc.) that temporarily stores data necessary for the operation of the controller processor 222. [ The auxiliary memory 224 includes an operating system code (e.g., a kernel and a device driver) and an application program code for performing functions of the controller processor 220 May be stored in the nonvolatile memory. A flash memory having a high processing speed can be used as a nonvolatile memory or a hard disk drive (HDD), a compact disc-read only memory (CD-ROM), etc. for storing a large amount of data Can be used. Controller processor 222 may typically be comprised of logic circuitry including at least one processing core. As the controller processor 222, an ARM (Advanced RISC Machines Ltd.) series core, an atom series core, or the like may be used.

Hereinafter, a method performed in a communication node belonging to a vehicle network and a corresponding counterpart communication node will be described. Hereinafter, even when a method (e.g., transmission or reception of a signal) to be performed at the first communication node is described, the corresponding second communication node can perform a method corresponding to the method performed at the first communication node For example, receiving or transmitting a signal). That is, when the operation of the first communication node is described, the corresponding second communication node can perform an operation corresponding to the operation of the first communication node. Conversely, when the operation of the second communication node is described, the corresponding first communication node can perform the operation corresponding to the operation of the switch.

3 is a block diagram illustrating a method of operating a communication node for mirroring in a vehicle network according to an embodiment of the present invention.

3, the vehicle network may include switch 1 310, end node 1 311, end node 2 312, end node 3 313, and end node 4 314, and the like. Switch 1 310 may perform the same or similar functions as the switch shown in FIG. 1 and end nodes 311, 312, 313, and 314 may perform the same or similar functions as the end node illustrated in FIG. can do. Switch 1 310 and end nodes 311, 312, 313, and 314, respectively, may be configured the same or similar to the communication node shown in FIG.

Switch 1 310 may include a plurality of ports 310-1, 310-2, 310-3, and 310-4. Port 1 310-1 of switch 1 310 may be coupled to port 1 311-1 of end node 1 311 and port 1 310-1 of switch 1 310 and end 1 A link may be formed between the ports 1 311-1 of the first port 311. Port 2 310-2 of switch 1 310 may be coupled to port 1 312-1 of end node 2 312 and port 2 310-2 of switch 1 310 and end node 2 A link may be formed between the port 1 312-1 of the first port 312 and the port 1 312-1 of the second port 312. Port 3 310-3 of switch 1 310 may be connected to port 1 313-1 of end node 3 313 and port 3 310-3 of switch 1 310 and end 3 And a port 1 (313-1) of the second port 313 may be formed. Port 4 310-4 of switch 1 310 may be coupled to port 1 314-1 of end node 4 314 and port 4 310-4 of switch 1 310 may be coupled to port 1 314-1 of end node 4 314, A link can be formed between the port 1 314-1 of the first port 314 and the port 1 314-1. Hereinafter, a method of operating a communication node for mirroring according to an embodiment of the present invention performed in the vehicle network described with reference to FIG. 3 will be described in detail with reference to FIG. 4 to FIG.

4 is a flowchart illustrating a method of operating a communication node for mirroring in a vehicle network according to an embodiment of the present invention.

Referring to FIG. 4, a method of operating a communication node for mirroring in a vehicle network according to an embodiment of the present invention may be performed in a first communication node. The first communication node may refer to the switch described with reference to Figs. 1 and 3 and may have a similar or identical structure to that of the communication node described with reference to Fig. A vehicle network according to an embodiment of the present invention may include a plurality of communication nodes. Here, the plurality of communication nodes included in the vehicle network may include the end nodes 311, 312, 313, and 314 connected to the switch 1 310 and the switch 1 310 described with reference to FIG.

A second one of the plurality of communication nodes included in the vehicle network may refer to end node 1 311 coupled to the first communication node. For example, the second communication node may refer to an ECU that performs a first function, which is one of a plurality of functions (such as control of gear, speed, and direction) performed in the vehicle.

When the second communication node performs the operation of the first function of the vehicle, it may generate the first message including the indicator indicating the operation of the first function. Thereafter, the second communication node may transmit a first message to the first communication node, the first message including an indicator indicating an operation of the first function of the vehicle. Thereafter, the first communication node may receive a first message indicating operation of the first function of the vehicle from the second one of the plurality of communication nodes (S410). Thereafter, the first communication node can confirm the indicator indicating the operation of the first function included in the first message, and can recognize that the first function has been operated in the vehicle through the confirmed indicator.

Thereafter, the first communication node may determine a third communication node that performs a second function corresponding to the first one of the plurality of communication nodes (S420). Here, the second function corresponding to the first function may mean a function related to the first function among a plurality of functions performed in the vehicle. For example, when the second communication node is a gear of the vehicle, and the first function is a function of operating as "R (reverse) " And a function of outputting a video image. That is, the third communication node may mean a display device capable of outputting an image photographed from the rear of the vehicle. If the second communication node is a steering device (for example, a handle) for controlling the direction of the vehicle and the first function is the function of controlling the direction of the vehicle to the left or right, And a function of outputting an image photographed on the right side. That is, the third communication node may mean a display device capable of outputting an image photographed from the rear of the vehicle.

The first communication node includes a function code for each of a plurality of functions performed in the vehicle, a target address for each of the function codes, and a VLAN ID (Virtual LAN identifier) for each of the function codes The third communication node can be determined based on the first table. A specific method of determining the third communication node at the first communication node may be described below with reference to FIG.

5 is a flowchart illustrating a method for determining a third communication node in the method of operation of the communication node shown in FIG.

Referring to FIG. 5, a first communication node performing a method of operating a communication node for mirroring in a vehicle network according to an embodiment of the present invention includes a first node corresponding to a first function based on information included in a first table, 2 < / RTI > function. The first table to be referred to by the first communication node to determine the third communication node may be represented as shown in Table 1 below.

Table 1 above may refer to an embodiment of a first table that is referenced to determine a third communication node that performs a second function at a first communication node corresponding to a first function. The first table may include a function code for a plurality of functions performed in the vehicle, a description of the function code, a target address for the function code, and a VLAN ID. The first communication node can identify the function code of the first function based on the first table. For example, when the first function is a function that operates as "D (drive) " in which the gear of the vehicle means forward or" It can be determined that a function related to a surround view, which is a function of shooting, is required. Accordingly, the first communication node can determine the function code of the first function as "2" corresponding to the surround view by referring to the first table.

Then, the first communication node can confirm the target address corresponding to the function code of the first function in the first table (S421). For example, the first communication node can identify the target address "01-10-AO-CO-00-02" corresponding to "2" Thereafter, the first communication node may determine that the communication node indicated by the identified target address is a third communication node that performs a second function corresponding to the first function (S422). That is, the first communication node transmits a communication node indicated by "01-10-A0-C0-00-02" as the target address corresponding to "2 & It can be determined as a communication node.

Referring again to FIG. 4, the first communication node may determine at least one communication node providing data related to a second one of the plurality of communication nodes (S430). For example, if the first function is a function to operate as "D (drive) " which means that the gear of the vehicle advances or" The at least one communication node providing data related to the second function may mean a camera capable of photographing the rear of the vehicle. The first function is a function for controlling the direction of the vehicle to the left or right and the second function is a function for outputting a photographed image on the left or right side of the vehicle, May mean a camera capable of photographing the left or right side of the vehicle.

Specifically, the first communication node transmits the port number of the plurality of ports included in the first communication node, the MAC address of the communication node connected through the plurality of ports, and the VLAN ID of the communication node connected through the plurality of ports And determine at least one communication node based on the second table including the second table. A specific method of determining at least one communication node at the first communication node may be described below with reference to Fig.

6 is a flowchart illustrating a method for determining at least one communication node in the method of operation of the communication node shown in FIG.

Referring to FIG. 6, a first communication node performing a method of operating a communication node for mirroring in a vehicle network according to an exemplary embodiment of the present invention transmits data related to a second function based on information included in a second table It is possible to determine at least one communication node to provide. The second table for referring to at least one communication node in the first communication node may be represented as shown in Table 2 below.

Table 2 above may refer to one embodiment of a second table that is referenced to determine at least one communication node that provides data associated with a second function at a first communication node. For example, the second table may include a port number of a plurality of ports included in the first communication node, a MAC address of a communication node connected through a plurality of ports, and a VLAN ID of a communication node connected through a plurality of ports have. The first communication node can identify at least one port having the same VLAN ID as the VLAN ID corresponding to the function code of the first function in the second table (S431). Specifically, the first communication node can confirm that the VLAN ID corresponding to the function code "2 " is" 2 " through the first table. Thereafter, the first communication node can confirm that the port having the port numbers 2, 3 and 4 in the second table is the port having the VLAN ID "2" which is the VLAIN ID.

Thereafter, the first communication node may determine that the communication node connected through the identified port is at least one communication node providing data related to the second function (S432). Specifically, the first communication node can confirm the MAC address of the communication node connected through the port having the port numbers 2, 3, and 4. Then, the first communication node can identify a communication node having a MAC address other than the MAC address corresponding to the target address among the MAC addresses of the ports having the port numbers 2, 3, and 4. Then, the first communication node may determine that the communication node having the remaining MAC address is at least one communication node providing data related to the second function.

For example, the first communication node transmits the MAC addresses of 01-10-AO-CO-00-02, 01-10-AO-CO-00- 01-10-AO-CO-00-02 ", which is the MAC address of the port having the port number 2 in" 01-10-AO-CO-00-04 " Can be confirmed. Then, the first communication node sets the target address in the 01-10-AO-CO-00-02, 01-10-AO-CO-00-03 and 01-10-AO- 01-10-AO-CO-00-03 " and " 01-10-AO-CO-00-04 "excluding the MAC address" 01-10-AO- May be determined as at least one communication node providing data related to the second function.

4, a first communication node may establish port mirroring for a first function to mirror a second message received from at least one communication node to a third communication node (S440). A specific method of setting the port mirroring for the first function at the first communication node can be described below with reference to FIG.

7 is a flowchart illustrating a method of setting port mirroring in the method of operation of the communication node shown in FIG.

Referring to FIG. 7, a first communication node performing a method of operating a communication node for mirroring in a vehicle network according to an embodiment of the present invention includes a first communication node and a third communication node, And may be set as a target port for mirroring the function (S441). Specifically, the first communication node can confirm the MAC address of the third communication node determined on the basis of the first table in the second table, and confirm the port corresponding to the MAC address of the third communication node. Thereafter, the first communication node can identify the identified port as a port connecting between the first communication node and the third communication node among the plurality of ports included in the first communication node, It can be set as a target port for mirroring.

For example, if the first communication node is the switch 1 310 shown in FIG. 3, the third communication node may be the end node 2 312 connected to the switch 1 310. In this case, the first switch 310 can check the function code corresponding to the first function in the first table, and confirm the target address corresponding to the identified function code. Thereafter, the first switch 310 confirms the communication node designated by the identified target address, and judges that the confirmed communication node, the second node 312, is the communication node performing the second function corresponding to the first function can do. Thereafter, the switch 1 (310) can confirm the MAC address of the end node 2 (312) determined based on the first table in the second table, and the port corresponding to the MAC address of the verified end node 2 (312) Port 2 (310-2). Subsequently, the switch 1 310 may set the identified port 2 (310-2) as a target port for mirroring of the first function.

Then, the first communication node can set the port connecting between the first communication node and the at least one communication node to the mirroring port for the mirroring of the first function (S442). Specifically, the first communication node can identify a port of at least one of the plurality of ports included in the first communication node based on the second table. Then, the first communication node may set the port of the identified at least one communication node as a mirroring port for the mirroring of the first function.

3, the at least one communication node is referred to as an end node 3 (313) and an end node 4 (314) connected to the switch 1 (310) . In this case, the first switch 310 can confirm the function code corresponding to the first function in the first table, and confirm the VLAN ID corresponding to the verified function code. Then, the first switch 310 can confirm the communication node having the same VLAN ID as the VLAN ID confirmed in the second table. That is, the switch 1 310 confirms the end node 2 (312), the end node 3 (313), and the end node 4 (314) having the same VLAN ID as the VLAN ID corresponding to the code of the first function in the second table . At this time, the switch 1 310 receives the end node 3 313 excluding the end node 2 312, which is the target address of the end node 2 312, the end node 3 313, and the end node 4 314, And the port for end node 4 314 as a mirroring port for mirroring of the first function. That is, the switch 1 310 is connected to the end node 3 313 and the end node 4 314 among the ports 310-1, 310-2, 310-3, and 310-4 included in the switch 1 310 The connected port 3 (310-3) and the port 4 (310-4) can be set as a mirroring port for mirroring the first function.

4, if a second message is received from the at least one communication node via the mirroring port, the first communication node may transmit the second message to the third communication node through the target port role (S450). Here, the second message may include data related to the second function. For example, if the second function is a function of outputting an image photographed at the rear of the vehicle, the second message may include data of the image photographed at the rear of the vehicle, which is data related to the second function.

3, at least one communication node may be referred to as an end node 3 (313) and an end node 4 (314) connected to the switch 1 (310) . In such a case, the end node 3 313 and the end node 4 314 may generate a second message including data related to the second function. The end node 3 313 and the end node 4 314 may then transmit the generated second message to the switch 1 (310).

Specifically, the end node 3 313 can generate a second message including data related to the second function, and transmits the generated second message to the switch 1 310 through the port 1 313-1 . Switch 1 310 may then receive the second message from end node 3 313 via port 1 310-3 connected to port 1 313-1 of end node 3 313. In addition, end node 4 314 may generate a second message containing data related to the second function and may transmit the generated second message to switch 1 310 via port 1 314-1 have. Switch 1 310 may then receive the second message from end node 4 314 via port 4 310-4 coupled to port 1 313-1 of end node 3 313.

Thereafter, switch 1 310 receives a second message from end node 3 313 and end node 4 314 from port 3 (310-3) and port 4 (310-4), which are mirroring ports for mirroring of the first function ). ≪ / RTI > Subsequently, switch 1 310 may send a second message to end node 2 312 via port 2 310 - 2, which is a target port for mirroring of the first function. End node 2 312 may then receive the second message from switch 1 310 via port 1 312-1 connected to port 2 310-2 of switch 1 310. [ End node 2 312 may then process the received second message. For example, when the end node 2 (312) is a display device capable of outputting an image and the second message includes image data, the end node 2 (312) can output the image data included in the second message .

As described above with reference to Figures 3 to 7, a first communication node performing a method of operating a communication node for mirroring in a vehicle network according to an embodiment of the present invention may set port mirroring for the first function have. A method of processing a message at the first communication node based on the port mirroring thus set can be described in detail below with reference to FIG.

8 is a flowchart illustrating a method of operating a communication node for mirroring in a vehicle network according to another embodiment of the present invention.

Referring to FIG. 8, a method of operating a communication node for mirroring in a vehicle network according to an embodiment of the present invention may be performed in a first communication node. The first communication node may refer to the switch described with reference to Figs. 1 and 3 and may have a similar or identical structure to that of the communication node described with reference to Fig. A vehicle network according to an embodiment of the present invention may include a plurality of communication nodes. Here, the plurality of communication nodes included in the vehicle network may include the end nodes 311, 312, 313, and 314 connected to the switch 1 310 and the switch 1 310 described with reference to FIG.

A plurality of communication nodes included in the vehicle network at least one communication node may generate a message including data related to the function of the vehicle. Thereafter, at least one communication node may transmit the generated message to the first communication node. Then, the first communication node may receive a message including data related to the function of the vehicle from at least one communication node (S810). Here, the at least one communication node may mean an end node connected to the first communication node, and may perform at least one of a plurality of functions performed in the vehicle.

Then, the first communication node can check data related to the function of the vehicle included in the received message, and determine whether port mirroring is set for the identified function. Specifically, the first communication node can check whether the port for at least one of the plurality of ports included in the first communication node is a mirroring port (S820). That is, the first communication node can confirm that the port connected to at least one of the plurality of ports included in the first communication node is the port set as the mirroring port.

Thereafter, the first communication node may determine that port mirroring for the identified function is set when the port connecting the first communication node and the at least one communication node is a mirroring port for mirroring the identified function. On the other hand, if the port connecting the first communication node and the at least one communication node is not a mirroring port for mirroring the identified function, the first communication node determines that port mirroring for the identified function is not set .

Thereafter, the first communication node may process the message based on whether port mirroring is set for the identified function. Specifically, when the port mirroring for the identified function is set, the first communication node may transmit a message including data related to the function of the vehicle to the third communication node through the target port for the identified function (S830) . Here, the third communication node may refer to a communication node connected through a target port for port mirroring among a plurality of ports included in the first communication node. Meanwhile, if the port mirroring for the identified function is not set, the first communication node may delete the message including the data related to the function of the vehicle (S840).

Through the above-described method, a first communication node performing a method of operating a communication node for mirroring in a vehicle network according to an embodiment of the present invention includes a function of setting port mirroring among a plurality of functions performed in a vehicle If so, it can process messages related to that function based on the set port mirroring. Specifically, a method of processing a message related to the function based on port mirroring at the first communication node can be described below.

For example, as described with reference to FIG. 2, the first communication node may include a PHY layer unit and a controller unit. The first communication node may receive a message including data related to the function of the vehicle from at least one communication node through the PHY layer unit. Thereafter, the message received via the PHY layer unit of the first communication node may be transmitted to the PHY layer unit of the third communication node connected through the target port for port mirroring, without being forwarded to the controller unit. That is, when the first communication node receives a message including data related to the function of the vehicle on which the port mirroring is set, through the PHY layer unit, the first communication node transmits the message to the third communication node PHY layer unit.

9 is a block diagram illustrating a method of operating a communication node for mirroring in a vehicle network according to another embodiment of the present invention.

9, the vehicle network includes switch 1 910, switch 2 910, switch 3 930, end node 1 911, end node 2 912, end node 3 921, end node 4 An end node 922, an end node 5 931, and an end node 6 932, and the like. The switches 910, 920 and 930 may perform the same or similar functions as the switches shown in FIG. 1 and the end nodes 911, 912, 921, 922, 931, It can perform the same or similar function as the node. Each of the switches 910, 920 and 930 and the end nodes 911, 912, 921, 922, 931 and 932 may be the same or similar to the communication node shown in Fig.

The switch 1 910 may include a plurality of ports 910-1, 910-2, 910-3, and 910-4. Port 1 910-1 of switch 1 910 may be connected to port 1 911-1 of end node 1 911 and port 1 910-1 of switch 1 910 may be coupled to port 1 910-1 of end node 1 911, A link can be formed between the ports 1 and 911-1 of the first port 911. Port 2 910-2 of switch 1 910 may be coupled to port 1 912-1 of end node 2 912 and port 2 910-2 of switch 1 910 may be coupled to port 1 912-1 of end node 2 912, And a port 1 (912-1) of the port 912 may be formed. Port 3 910-3 of switch 1 910 can be connected to port 1 920-1 of switch 2 920 and port 3 910-3 of switch 1 910 and port 3 910-3 of switch 2 920 A link can be formed between the ports 1 and 920-1. Port 4 910-4 of switch 1 910 can be coupled to port 1 930-1 of switch 3 930 and port 4 910-4 and switch 3 930-4 of switch 1 910 A link can be formed between the first port 930-1 and the first port 930-1.

The switch 2 920 may include a plurality of ports 920-1, 920-2, and 920-3. Port 1 920-1 of switch 2 920 can be connected to port 2 910-2 of switch 1 910 and port 1 920-1 and switch 1 910 The link 2 may be formed between the port 2 and the port 2 910-2. Port 2 920-2 of switch 2 920 may be coupled to port 1 921-1 of end node 3 921 and port 2 920-2 of switch 2 920 may be coupled to port 2 920-2 of end node 3 921, A link may be formed between the port 1 921-1 of the port 921 and the port 1 921-1. Port 3 920-3 of switch 2 920 may be coupled to port 1 922-1 of end node 4 922 and port 3 920-3 of switch 2 920 may be coupled to port 1 922-1 of end node 4 922, And a port 1 (922-1) of the link 922 may be formed.

The switch 3 930 may include a plurality of ports 930-1, 930-2, and 930-3. Port 1 930-1 of switch 3 930 can be coupled to port 4 910-4 of switch 1 910 and port 1 930-1 and 910 A link may be formed between the ports 4 and 910-4 of the first node. Port 2 930-2 of switch 3 930 may be coupled to port 1 931-1 of end node 5 931 and port 2 930-2 of switch 3 930 may be coupled to port 1 931-2 of end node 5 931, And a port 1 (931-1) of the first port 931 may be formed. Port 3 930-3 of switch 3 930 can be connected to port 1 932-1 of end 6 932 and port 3 930-3 of switch 3 930 and end 3 A link can be formed between the port 1 932-1 of the first port 932 and the port 1 932-1.

In a vehicle network having a connection structure as described above, the switch 1 910 is a method for operating a communication node for mirroring in a vehicle network according to an embodiment of the present invention described with reference to Figs. 4 to 7 and Fig. 8 It is possible to perform a method of operating a communication node for mirroring in a vehicle network according to another embodiment of the present invention. That is, the switch 1 910 may perform the steps included in the method of operating the communication node described with reference to FIGS. However, when a plurality of switches are included in the vehicle network as shown in FIG. 9, there may be a difference in the operation method of the communication node performed in the switch 1 910, which can be specifically described below .

Switch 1 910 may receive a first message from end node 1 911 indicating the operation of a first function, which is one of a plurality of functions performed in the vehicle via port 1 910-1. Thereafter, the switch 1 910 confirms the first function indicated by the first message, and the function corresponding to the first function confirmed in the first table (for example, the first table described with reference to Fig. 5) You can check the code. Then, the switch 1 910 can confirm the target address corresponding to the function code of the first function in the first table. Then, the switch 1 910 can determine that the end node 2 912, which is the communication node indicated by the target address, is the communication node that performs the second function corresponding to the first function.

Thereafter, the switch 1 (910) can confirm the VLAN ID corresponding to the function code of the first function in the first table, and the VLAN ID corresponding to the function code of the first function in the second table End node 3 921, end node 922, end node 931, and end node 6 932, as shown in FIG. The switch 1 910 then determines that the identified end node 3 921, end node 922, end node 931 and end node 6 932 are communication nodes providing data related to the second function .

At this time, the switch 1 910 can confirm the MAC address of the end node 3 921 and the end node 4 922 in the second table, and determine the MAC address of the end node 3 921 and the end node 4 (922) is connected to the switch 2 (920). Then, the switch 1 910 switches the port 3 910-3 among the plurality of ports 910-1, 910-2, 910-3, and 910-4 included in the switch 1 910 to the switch 2 920 ). ≪ / RTI > Thereafter, the switch 1 910 can generate a message including an indicator for instructing the performance of the mirroring for the first function, and transmit the generated message to the switch 2 920 through the port 3 910-3 .

Thereafter, the switch 2 920 may receive a message containing an indicator from the switch 1 910 through the port 1 920-1 indicating the performance of the mirroring for the first function. Thereafter, the switch 2 920 can confirm the first function in the received message and set the port mirroring for the identified first function. The specific method of setting the port mirroring for the first function in the switch 2 (920) may be the same as described with reference to Figs. 4 to 7. For example, port 1 920-1, connected to switch 1 910, among the plurality of ports 920-1, 920-2, and 920-3 included in switch 2 920, Port 2 920-2 connected to end node 3 9210 and port 3 920-3 connected to end node 4 922 may be set as a target port for mirroring of the first function, Port < / RTI > Accordingly, when the switch 2 920 receives a message including data related to the second function corresponding to the first function from the end node 3 921 and the end node 4 922, the switch 2 920 transmits the received message to the target port To the switch 1 (910) through the port 1 (920-1) set to " 1 "

In the same manner, switch 1 910 can direct end node 5 931 and end node 6 932 connected through switch 3 930 to perform mirroring for the first function, (930) transmits a received message to switch 1 910 when a message including data related to a second function corresponding to the first function is received from end node 5 931 and end node 6 932 .

On the other hand, the switch 1 910 can identify a port corresponding to the MAC address of the end node 2 912 in the second table, and can set the identified port as a target port for mirroring the first function. That is, switch 1 910 selects switch 1 910 and switch 1 910 among a plurality of ports 910-1, 910-2, 910-3, and 910-4 included in switch 1 910 based on the second table, It can be confirmed that the port connecting between the end nodes 2 and 912 is the port 2 910-2 and the confirmed port 2 910-2 can be set as the target port for the mirroring of the first function.

Then, the switch 1 910 is connected to the port 3 910-2 connected to the switch 2 920 among the plurality of ports 910-1, 910-2, 910-3, and 910-4 included in the switch 1 910, 3 and the port 4 910-4 connected to the switch 3 930 can be set as a mirroring port for mirroring the first function. Then, when the switch 1 910 receives a message containing data related to the second function corresponding to the first function from the switch 2 920 and the switch 3 930, the switch 1 910 switches the received message to the mirroring To the end node 2 912 via the port 2 910-2 set as the destination port for the end node.

The methods according to the present invention can be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer readable medium. The computer readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the computer readable medium may be those specially designed and constructed for the present invention or may be available to those skilled in the computer software.

Examples of computer readable media include hardware devices that are specially configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those generated by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate with at least one software module to perform the operations of the present invention, and vice versa.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. It will be possible.

Claims (20)

A method of operating a first one of a plurality of communication nodes included in an ethernet-based vehicle network,
Receiving a first message indicating an operation of a first function of the vehicle from a second one of the plurality of communication nodes;
Determining a third one of the plurality of communication nodes to perform a second function corresponding to the first function;
Determining at least one communication node providing data associated with the second one of the plurality of communication nodes; And
Establishing port mirroring for the first function such that a second message received from the at least one communication node is mirrored to the third communication node. The method according to claim 1,
Wherein the determining of the third communication node comprises:
(1) including a function code for each of a plurality of functions performed in the vehicle, a target address for each of the function codes, and a VLAN ID (Virtual LAN identifier) for each of the function codes And determining the third communication node based on the table. The method of claim 2,
Wherein the determining of the third communication node comprises:
Identifying a target address corresponding to a function code of the first function in the first table; And
And determining that the communication node indicated by the identified target address is the third communication node that performs a second function corresponding to the first function. The method of claim 2,
Wherein determining the at least one communication node comprises:
A port number of a plurality of ports included in the first communication node, a MAC address of a communication node connected through the plurality of ports, and a VLAN ID of a communication node connected through the plurality of ports, And determining the at least one communication node based on a second table. The method of claim 4,
Wherein determining the at least one communication node comprises:
Identifying at least one port having the same VLAN ID as the VLAN ID corresponding to the function code of the first function in the second table; And
Determining a communication node connected through the identified port as the at least one communication node providing data related to the second function. The method according to claim 1,
Wherein the setting of the port mirroring comprises:
Setting a port connecting between the first communication node and the third communication node as a target port for mirroring the first function; And
And setting a port connecting between the first communication node and the at least one communication node as a mirroring port for mirroring the first function. . The method of claim 6,
The method of claim 1,
Further comprising, when receiving the second message from the at least one communication node via the mirroring port, transmitting the second message to the third communication node via the destination port. A method of operating a communication node. The method according to claim 1,
Wherein the first communication node comprises:
Wherein the first communication node is a switch included in the vehicle network and the second communication node, the third communication node, and the at least one communication node are end nodes connected to the first communication node. 1 method of operating a communication node. A method of operating a first one of a plurality of communication nodes included in an ethernet-based vehicle network,
Receiving a message including data related to a function of a vehicle from at least one of the plurality of communication nodes;
Determining whether port mirroring is set for the function; And
And processing the message based on whether to set up port mirroring for the function. The method of claim 9,
Wherein the determining whether the port mirroring is set comprises:
Wherein if the port connecting the first communication node and the at least one communication node is a mirroring port for mirroring the function, it is determined that the port mirroring for the function is set. A method of operating a communication node. The method of claim 9,
Wherein the determining whether the port mirroring is set comprises:
Wherein if the port connecting the first communication node and the at least one communication node is not a mirroring port for mirroring the function, it determines that port mirroring for the function is not set. How the node works. The method of claim 9,
Wherein processing the message comprises:
And if the port mirroring for the function is set, sending the message to a third communication node connected through a target port for mirroring the function. The method of claim 9,
Wherein processing the message comprises:
And if the port mirroring for the function is not set, deletes the message. The method of claim 10,
Wherein the first communication node comprises:
Wherein the first communication node is a switch included in the vehicle network and the at least one communication node and the second communication node are end nodes connected to the first communication node. . A first communication node in an ethernet-based vehicle network,
A processor; And
Wherein at least one instruction executed through the processor includes a memory,
Wherein the at least one instruction comprises:
Receive a first message indicating an operation of a first function of the vehicle from a second one of the plurality of communication nodes;
Determining a third one of the plurality of communication nodes to perform a second function corresponding to the first function;
Determining at least one communication node providing data associated with the second one of the plurality of communication nodes;
Establish port mirroring for the first function such that a second message received from the at least one communication node is mirrored to the third communication node; And
And to send the second message to the third communication node based on the established port mirroring when receiving the second message from the at least one communication node. 16. The method of claim 15,
Wherein the at least one instruction comprises:
A function code for each of a plurality of functions performed in the vehicle in a process of determining the third communication node, a target address for each of the function codes, and a VLAN ID Wherein the first communication node is executed to determine the third communication node based on a first table including a virtual LAN identifier. 18. The method of claim 16,
Wherein the at least one instruction comprises:
Identifying a target address corresponding to the function code of the first function in the first table in the process of determining the third communication node; And
And to determine that the communication node indicated by the identified target address is the third communication node that performs a second function corresponding to the first function. 18. The method of claim 16,
Wherein the at least one instruction comprises:
The method of claim 1, further comprising: determining a port number of a plurality of ports included in the first communication node, a MAC address of a communication node connected through the plurality of ports, To determine the at least one communication node based on a second table including a VLAN ID of the connected communication node via the first table. 19. The method of claim 18,
Wherein the at least one instruction comprises:
Identifying at least one port having the same VLAN ID as the VLAN ID corresponding to the function code of the first function in the second table in the process of determining the at least one communication node; And
And determine that the communication node connected through the identified port is the at least one communication node providing data related to the second function. 16. The method of claim 15,
Wherein the at least one instruction comprises:
Setting a port connecting between the first communication node and the third communication node as a target port for mirroring the first function in the process of setting the port mirroring; And
And to set a port connecting between the first communication node and the at least one communication node as a mirroring port for mirroring the first function.

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