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Vehicle-mounted network ECU communication method based on SOME/IP protocol

An IP protocol and in-vehicle network technology, applied in the field of in-vehicle network ECU communication, can solve problems such as the inability to use a service discovery mechanism, and achieve the effects of improving communication efficiency and utilization, reducing in-vehicle network load, and reducing conversion frequency.

Active Publication Date: 2021-01-29
SHANGHAI HEQIAN ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent 202010307595.0 provides a vehicle-mounted interaction method, device, and storage medium. The method requires the SOME / IP service discovery mechanism to obtain controlled devices that support interactive services in the vehicle-mounted system. It requires that all interactive devices use SOME / IP The IP mechanism and the service have been defined in advance. For traditional ECUs that do not use SOME / IP communication, it is still impossible to use the service discovery mechanism based on the SOME / IP mechanism for interaction.
In addition, in order to explain how to convert the function realization of the ECU based on the CAN protocol into a service, it does not involve

Method used

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  • Vehicle-mounted network ECU communication method based on SOME/IP protocol
  • Vehicle-mounted network ECU communication method based on SOME/IP protocol
  • Vehicle-mounted network ECU communication method based on SOME/IP protocol

Examples

Experimental program
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example

[0071] The corresponding content is the service provided based on the SOME / IP protocol, at least including: the message ID corresponding to the CAN ID, the service ID, the instance ID, and the event group ID;

[0072] The message ID includes a service ID and a method ID.

[0073] The service ID and instance ID are used to provide services, discover services, and stop services when establishing a connection with the client. The service ID and instance ID are used for SOME IP_SD messages.

[0074] see image 3 , image 3 For SOME / IP protocol message, the message ID is a 32-bit identifier, and the message ID is a 32-bit identifier, which is used to dispatch the RPC call to the method of the application and identify the event. The message ID must be able to uniquely identify the method or event of the Service.

[0075] The service ID is used to identify the service, indicating the functions of the service. Method and Event should use 16-bit Method ID to identify inside the serv...

example ID

[0084] Type field [uint8]: encode FindService (0x00) and OfferService (0x01). index_run_first_option [uint8]: The index of this option to run the first option in the options array. index to run second option [uint8]: The index of this option to run the second option in the options array. First option [uint4]: Describes the number of options used by the first option run. Second option [uint4]: Describes the number of options that the second option runs with. Service ID [uint16]: Describes the service ID of the service or service instance involved in this entry. Instance ID [uint16]: describes the service instance ID of the service instance;

[0085] This entry is relative to or set to 0xFFFF if all service instances of the service are to be used.

[0086] majorversion [uint8]: The major version (instance) of the encoded service.

[0087] Maximum Time To Live: Describes the lifetime of an entry in seconds.

[0088] MinorVersion [uint32]: Encodes the minor version of the se...

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PUM

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Abstract

The invention provides a vehicle-mounted network ECU communication method based on an SOME / IP protocol, and the method specifically comprises the steps: enabling an ECU based on a CAN protocol to transmit a CAN signal to a service conversion ECU, carrying out the judgment of the type of the CAN signal through the service conversion ECU, carrying out the corresponding conversion service processingaccording to the type of the CAN signal, and carrying out the corresponding conversion processing through the judgment of the type of the CAN signal; in the data transmission process, setting a load data buffer area, and analyzing and processing load data, such as merging or segmenting. Through the technical scheme provided by the invention, corresponding service conversion can be carried out according to the data type of the CAN protocol, and meanwhile, the technical problem of asymmetric transmission of single-frame data of the CAN protocol and the vehicle-mounted Ethernet protocol can be solved.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a SOME / IP protocol-based ECU communication method for a vehicle network. Background technique [0002] With the development of science and technology, Hyundai Motor is also moving towards intelligent and networked development along with the progress of science and technology. With the rapid development of processor computing power and hardware, the functions of automobiles are becoming more and more powerful. In view of the demand for new functions such as ADAS technology, high-quality in-vehicle entertainment, and OTA remote upgrades, the network bandwidth demand of ECUs has also shown explosive growth, which exceeds the capacity limit of traditional in-vehicle networks. In addition, in order to provide vehicle functions, the number of on-board ECUs has increased and the volume of data to be transmitted has increased. The ordinary CAN network has been unable to meet the demand, espec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/40H04L29/06H04L29/08
CPCH04L12/40006H04L69/08H04L67/025H04L67/1004H04L67/12H04L67/146H04L2012/40215H04L2012/40273
Inventor 肖文平何敖东
Owner SHANGHAI HEQIAN ELECTRONICS TECH CO LTD