CN114095445A - Data transmission control method and device for vehicle-mounted Ethernet, electronic equipment and storage medium - Google Patents
Data transmission control method and device for vehicle-mounted Ethernet, electronic equipment and storage medium Download PDFInfo
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- CN114095445A CN114095445A CN202010743687.3A CN202010743687A CN114095445A CN 114095445 A CN114095445 A CN 114095445A CN 202010743687 A CN202010743687 A CN 202010743687A CN 114095445 A CN114095445 A CN 114095445A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
- H04L47/2425—Traffic characterised by specific attributes, e.g. priority or QoS for supporting services specification, e.g. SLA
- H04L47/2433—Allocation of priorities to traffic types
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/22—Traffic shaping
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
- H04L47/62—Queue scheduling characterised by scheduling criteria
- H04L47/625—Queue scheduling characterised by scheduling criteria for service slots or service orders
- H04L47/6275—Queue scheduling characterised by scheduling criteria for service slots or service orders based on priority
Abstract
The embodiment of the application provides a data transmission control method and device of a vehicle-mounted Ethernet, electronic equipment and a storage medium. The specific implementation scheme is as follows: acquiring message data to be transmitted in a vehicle-mounted Ethernet; acquiring transmission parameters from message data to be transmitted; determining the data type of the message data to be transmitted according to the transmission parameters; determining a transmission strategy of the message data to be transmitted according to the data type of the message data to be transmitted, and transmitting the message data based on the transmission strategy of the message data to be transmitted; wherein the transmission strategy comprises the prior transmission of the delay sensitive data through the transmission control equipment. The embodiment of the application can meet the transmission performance requirements of various types of message data in the communication process, and effectively improves the data transmission delay.
Description
Technical Field
The present application relates to the field of computer network technologies, and in particular, to a data transmission control method and apparatus for a vehicle-mounted ethernet, an electronic device, and a storage medium.
Background
With the increasing number of function processing units in vehicles, the vehicle-mounted applications will be developed towards higher-level and more complex functions. For example, with the development of the automatic driving technology, the number of ECUs (Electronic Control units) in the automatic driving system is increasing, and the vehicle-mounted ethernet will become a communication backbone network in the automatic driving automobile. The ECU has higher requirements for the transmission network rate and transmission delay in the communication process. However, the current vehicle-mounted ethernet usually adopts a single scheduling mode of priority, and cannot meet the performance requirements of different data in the communication process.
Disclosure of Invention
The embodiment of the application provides a data transmission control method and device of a vehicle-mounted Ethernet, electronic equipment and a storage medium, which are used for solving the problems in the related technology and have the following technical scheme:
in a first aspect, an embodiment of the present application provides a data transmission control method for a vehicle-mounted ethernet, where the method includes:
acquiring message data to be transmitted in a vehicle-mounted Ethernet;
acquiring transmission parameters from message data to be transmitted;
determining the data type of the message data to be transmitted according to the transmission parameters;
and determining a transmission strategy of the message data to be transmitted according to the data type of the message data to be transmitted, and transmitting the message data based on the transmission strategy of the message data to be transmitted.
In a second aspect, an embodiment of the present application provides a data transmission control device for a vehicle-mounted ethernet, including:
the first acquisition unit is used for acquiring message data to be transmitted in the vehicle-mounted Ethernet;
a second obtaining unit, configured to obtain a transmission parameter from message data to be transmitted;
the determining unit is used for determining the data type of the message data to be transmitted according to the transmission parameters;
and the transmission unit is used for determining the transmission strategy of the message data to be transmitted according to the data type of the message data to be transmitted and transmitting the message data based on the transmission strategy of the message data to be transmitted.
In a third aspect, an embodiment of the present application provides an electronic device, including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to cause the at least one processor to perform a method provided by any one of the embodiments of the present application.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium storing computer instructions that, when executed on a computer, perform a method in any one of the above-described aspects.
The advantages or beneficial effects in the above technical solution at least include: the method can meet the transmission performance requirements of various types of message data in the communication process, and effectively improves the data transmission delay.
The foregoing summary is provided for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present application will be readily apparent by reference to the drawings and following detailed description.
Drawings
In the drawings, like reference numerals refer to the same or similar parts or elements throughout the several views unless otherwise specified. The figures are not necessarily to scale. It is appreciated that these drawings depict only some embodiments in accordance with the disclosure and are therefore not to be considered limiting of its scope.
Fig. 1 is a flowchart of a data transmission control method of a vehicle ethernet according to an embodiment of the present application;
fig. 2 is a schematic transmission scheduling diagram of a data transmission control method for a vehicle ethernet according to another embodiment of the present application;
FIG. 3 shows a block diagram of a vehicular Ethernet network according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a vehicle Ethernet network according to an embodiment of the application;
fig. 5 is a schematic diagram of a data transmission control device of a vehicle ethernet according to an embodiment of the present application;
fig. 6 is a block diagram of an electronic device for implementing a data transmission control method of a vehicle ethernet according to an embodiment of the present application.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present application. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
Fig. 1 is a flowchart of a data transmission control method of a vehicle ethernet according to an embodiment of the present application. As shown in fig. 1, the data transmission control method of the in-vehicle ethernet may include:
step S110, obtaining message data to be transmitted in the vehicle-mounted Ethernet;
step S120, obtaining transmission parameters from the message data to be transmitted;
step S130, determining the data type of the message data to be transmitted according to the transmission parameters;
step S140, determining a transmission strategy of the message data to be transmitted according to the data type of the message data to be transmitted, and transmitting the message data based on the transmission strategy of the message data to be transmitted; wherein the transmission strategy comprises the prior transmission of the delay sensitive data through the transmission control equipment.
An in-vehicle ethernet is a physical network used to connect various components within an automobile. In a vehicle ethernet, message data of various data types usually correspond to different transmission delay requirements. For example, delay sensitive data has high requirements for transmission delay, while non-delay sensitive data has relatively low requirements for transmission delay. In order to meet the transmission performance requirements of various types of message data in the communication process, transmission parameters corresponding to the various types of message data can be configured in advance, and the message data to be transmitted carries the corresponding transmission parameters. In one example, transmission parameter "00" may be set to correspond to delay sensitive type data and transmission parameter "01" may correspond to non-delay sensitive type data.
In step S110 and step S120, after the data transmission control device of the vehicle-mounted ethernet obtains the message data to be transmitted, first, the transmission parameter is obtained from the message data to be transmitted. Since the pre-configured transmission parameters correspond to the data type of the message data, the data type of the message data to be transmitted may be determined according to the transmission parameters in step S130. For example, if the transmission parameter "00" is obtained from the message data to be transmitted, it may be determined that the data type of the message data to be transmitted is delay sensitive data. Since the message data of various data types generally correspond to different transmission delay requirements, in step S140, a transmission policy of the message data may be determined according to the data type of the message data, and the message data may be transmitted based on the transmission policy of the message data to be transmitted, so as to meet the transmission delay requirements of the message data. In an example of an in-vehicle ethernet, the transmission delay requirement for delay sensitive data may be a transmission delay of less than 500 us. The transmission strategy may include the preferential transmission of delay sensitive data by the transmission control device. On the basis of determining the transmission strategy of the message data, the message data can be added into the corresponding transmission queue, and the message data is transmitted based on the transmission strategy of the message data to be transmitted. The embodiment of the application can ensure that the transmission performance requirements of various types of message data in the communication process are met, and effectively improves the data transmission delay.
In one embodiment, determining a data type of message data to be transmitted according to a transmission parameter includes: determining the message data to be transmitted as delay sensitive data under the condition that the transmission parameters comprise time sensitive parameters;
determining a transmission strategy of the message data to be transmitted according to the data type of the message data to be transmitted, and transmitting the message data based on the transmission strategy of the message data to be transmitted, wherein the transmission strategy comprises the following steps: under the condition that the message data to be transmitted is delay sensitive data, in the process of transmitting the delay sensitive data, other data except the delay sensitive data are controlled to stop transmission, and the delay sensitive data are transmitted preferentially.
In one embodiment, determining a data type of message data to be transmitted according to a transmission parameter includes: under the condition that the transmission parameters do not include time sensitive parameters, determining that the message data to be transmitted is non-delay sensitive data;
determining a transmission strategy of the message data to be transmitted according to the data type of the message data to be transmitted, and transmitting the message data based on the transmission strategy of the message data to be transmitted, wherein the transmission strategy comprises the following steps: and stopping transmitting the non-delay sensitive data when the message data to be transmitted is the non-delay sensitive data and the delay sensitive data is detected to start to be transmitted.
The delay sensitive parameter may be included in the preset transmission parameter. As mentioned above, the transmission parameter "00" can be set to represent the delay sensitive parameter, and the message data carrying the delay sensitive parameter is the delay sensitive data. If the transmission parameter "00" is obtained from the message data to be transmitted, the data type of the message data to be transmitted can be determined to be delay sensitive data. If the transmission parameter acquired from the message data to be transmitted is not "00" but "01", it is determined that the data type of the message data to be transmitted is non-delay sensitive data.
In one example, the latency sensitive class data may include control class data that is highly security critical. And in the case of detecting that the delay sensitive data in the waiting state exists, controlling other types of data except the delay sensitive data to stop transmission. After the transmission of the delay sensitive data is finished, allowing the non-delay sensitive data to start transmission. By the method, the delay sensitive data can be transmitted preferentially, so that the transmission delay of the delay sensitive data is reduced.
In one embodiment, the method for preferentially transmitting delay sensitive data by a transmission control device includes: and controlling other types of data except the time delay sensitive type of data to stop transmission by using the switching state of a transmission gate of the time sensing shaper.
In one example, the transmission control apparatus may include a time-aware shaper. A hardware gated queue based Time Aware Shaper (TAS) may be placed on the port of the area gateway of the onboard ethernet. The time-aware shaper controls the sending of data by means of a mechanism that opens and closes gates. At least one output queue, that is, a hardware gating queue, may be created in advance on a port of the area gateway, and is used to store packet data to be transmitted. After the message data to be transmitted is acquired, the message data is added to respective output queues to wait for transmission. In the time perception shaper, the gate opening and closing state of a hardware gating queue at a certain moment can be controlled, and only when a gate corresponding to a certain output queue is in the state of opening the gate, the transmission can be carried out. In the embodiment of the application, before and during the transmission of the delay sensitive data, the gates corresponding to other data can be set in the closed state to ensure that the delay sensitive data is not influenced by other data, so that ultra-low delay guarantee is provided for the delay sensitive data. Therefore, the time-aware shaper can protect the data with strict time delay requirements from being interfered by other network information.
Fig. 2 is a schematic transmission scheduling diagram of a data transmission control method for a vehicle ethernet according to another embodiment of the present application. As shown in fig. 2, on the port of the area gateway, the message data to be transmitted are respectively stored in 8 Output Queues (Output Queues). The 8 output queues are used for storing Network control data (Network control), Safety-related predetermined communication data (Safety-related scheduled traffic), ECU communication high priority data (ECU com high priority), ECU communication medium priority data (ECU com mid priority), ECU communication low priority data (ECU com low priority), Audio data (Audio), Video data (Video), and Best effort communication data (Best effort traffic), respectively. The rectangular boxes to the right of each output queue, pointed by the arrows, represent the corresponding "gates" of each output queue. The data type of the preset communication data related to safety is delay sensitive data, and the corresponding dark door indicates that the door is in a door opening state in the process of transmitting the delay sensitive data. In addition to the safety-relevant predetermined communication data, the light-colored "gates" corresponding to the other 7 output queues indicate: and in the process of transmitting the delay sensitive data, the gates corresponding to other data are put in a closed state.
In the example of fig. 2, the hardware gated queue is used to control other types of data except the delay sensitive type data to stop transmission, so that the transmission delay of the delay sensitive type data can be reduced. In the application scene of the vehicle-mounted Ethernet, the data transmission delay can be ensured to be less than 500us for the control data with high safety requirements.
In one embodiment, determining a data type of message data to be transmitted according to a transmission parameter includes: determining the message data to be transmitted as priority control data under the condition that the transmission parameters comprise priority parameters;
determining a transmission strategy of the message data to be transmitted according to the data type of the message data to be transmitted, and transmitting the message data based on the transmission strategy of the message data to be transmitted, wherein the transmission strategy comprises the following steps: and under the condition that the message data to be transmitted is priority control data, controlling the transmission sequence of the priority control data according to the priority parameters.
In one example, priority parameters may be allocated to various types of message data transmitted in the vehicle-mounted ethernet network, and the transmission delay of various types of message data may be controlled according to the priority parameters. The message data carrying the priority parameter is priority control data. Wherein the priority parameter can be used to indicate the transmission delay requirement of the priority control class data. For example, high priority, medium priority and low priority may be respectively allocated to packet data with transmission delay requirements of less than 1ms, less than 5ms and less than 10 ms. Controlling the transmission order of the priority control class data according to the priority parameter may include: controlling the prior transmission of the message data with high priority; after the transmission of the message data with the high priority is finished, transmitting the message data with the medium priority; and after the transmission of the message data with the medium priority is finished, transmitting the message data with the low priority.
Referring to fig. 2, the numbers 0, 1, 2, …, and 7 on the left side of the output queue indicate the priorities corresponding to the message data stored in the output queue. Wherein, the priority corresponding to the Network control data (Network control) is 7, which represents the highest priority; the priority corresponding to Best effort communication data (Best effort traffic) is 0, indicating the lowest priority. The data transmission sequence of each output queue is controlled by a Strict Priority scheduler (Strict Priority Selector), and then the message data is transmitted by a Media Access Control (MAC) and an ethernet wire (ethernet line) on the bottom layer.
In one embodiment, since the data type of the predetermined communication data related to safety is delay-sensitive data, in case that the transmission of the delay-sensitive data is detected to start, the other data except the delay-sensitive data is controlled to stop transmission. Therefore, any priority parameter can be allocated to the delay sensitive data. And under the condition that the delay sensitive data starts to be transmitted, the scheduling strategy for controlling the transmission delay of the priority control data according to the priority parameter is not executed.
In one embodiment, determining a data type of message data to be transmitted according to a transmission parameter includes: determining the message data to be transmitted as large-flow data under the condition that the transmission parameters comprise time slot parameters;
the method further comprises the following steps: and reserving a time slot with a preset size in a data packet of the large-flow data under the condition that the message data to be transmitted is the large-flow data.
As described above, in order to meet the transmission performance requirements of various types of message data in the communication process, transmission parameters corresponding to various types of message data may be configured in advance, and the preset transmission parameters may include a timeslot parameter. For example, a transmission parameter "03" may be set to indicate a time slot parameter, and if the data type corresponding to the time slot parameter is large-traffic data, the message data carrying the time slot parameter is large-traffic data. If the transmission parameter "03" is obtained from the message data to be transmitted, the data type of the message data to be transmitted can be determined to be large-flow data. In the case that the data type is large-traffic data, a time slot of a predetermined size may be reserved in a packet of the large-traffic data. And under the condition that the data with the priority lower than the large-flow data in the waiting transmission state is detected to exist, the data with the priority lower than the large-flow data can be transmitted by utilizing the time slot.
In one embodiment, the method further comprises:
and under the condition that the priority of the message data to be transmitted is lower than that of the large-flow data and the reserved time slot exists in the data packet of the large-flow data, transmitting the message data to be transmitted by using the time slot.
Referring to fig. 2, Audio data (Audio) and Video data (Video) belong to a large flow rate data. "Pre" in fig. 2 denotes a Pre-shaping policy. The Pre-mapping strategy can be used, a time slot with a certain size is inserted into a data packet of large-flow data, the transmission delay of audio data and video data which is less than 10 ms-30 ms can be ensured, and meanwhile, a certain available bandwidth is reserved for low-priority data. In the example of fig. 2, Best effort communication data (Best effort traffic) is data having a lower priority than Audio data (Audio) and Video data (Video). A certain available bandwidth may be reserved for low priority Best effort communication data (Best effort traffic) by inserting time slots in packets of Audio data (Audio) and Video data (Video).
The embodiment of the application can meet the transmission performance requirements of various types of message data in the communication process, and effectively improves the data transmission delay.
In one embodiment, an in-vehicle ethernet network comprises: a plurality of regional gateways and a central computing platform; wherein the content of the first and second substances,
the central computing platform comprises at least one function processing unit, wherein the at least one function processing unit is connected through a first ring network structure;
different area gateways in the area gateways are respectively arranged in different network areas of the vehicle-mounted Ethernet, wherein the vehicle-mounted Ethernet comprises a plurality of network areas, and the network areas are obtained by dividing based on positions; each of the plurality of regional gateways is connected with at least a portion of the at least one function processing unit via a corresponding second ring network structure.
Referring to fig. 3, the in-vehicle network includes a zone gateway 110, a zone gateway 120, and a zone gateway 130, and each zone gateway is connected to the function processing unit in the central computing platform through a ring network structure. A Central computing platform (Central computing platform) in the in-vehicle network may be used to act as an in-vehicle application server. The central computing platform may include a plurality of functional processing units, and may provide a plurality of interfaces to provide services for the in-vehicle devices. Referring to fig. 3, the central computing platform includes a function processing unit 210, and a function processing unit 230, and the respective function processing units are connected through a first ring network structure.
In one example, the central computing platform may support a Service-Oriented Architecture (SoA), connectable to the edge servers and the cloud server. Among them, the edge server is also called a front-end server. With the rapid development of the internet and applications, a system supporting the entire website with a single server cannot meet the customer requirements, and instead, a group of servers with a two-layer architecture to a three-layer architecture is adopted. The first tier of architecture is the edge server that contacts the user directly. The edge server provides a path for the user to enter the network and communicates with other server devices. Typically, an edge server is a group of servers that perform a single function, such as a firewall server, a cache server, a load balancing server or a DNS (Domain Name System) server. The second layer architecture is an intermediate layer, also referred to as application servers, including Web (global wide area network) presentation servers, Web application servers, and the like. The third tier is the back-end database server.
Fig. 4 shows a schematic structural diagram of an in-vehicle network according to an embodiment of the present application. Referring to fig. 4, the central computing platform includes a function processing unit 1, a function processing unit 2, and a function processing unit 3. The central computing platform includes functional processing units that are connected by a first ring network structure, generally designated 4. The portion enclosed within the dashed box in fig. 4 shows a first ring network structure to which the central computing platform and its contained 3 functional processing units are connected. In one example, the functional processing unit may include an electronic control unit ECU, which may be composed of a microprocessor, a memory, an input/output interface, an analog-to-digital converter, and a large scale integrated circuit of a shaping, driving, and the like.
In one example, the in-vehicle network may employ a location-based regional architecture. Taking the in-vehicle ethernet as an example, the in-vehicle ethernet may be divided into a plurality of regions based on the location, and a regional Gateway (Zonal Gateway) may be provided in each region. As shown in fig. 4, the on-board ethernet is divided into 7 network areas of the front, front left, front right, middle left, middle right, rear left, and rear right of the vehicle based on location. And respectively setting a corresponding area gateway in each network area.
Referring to fig. 3 and 4, each of the regional gateways is connected to at least one functional processing unit in the central computing platform through a second ring network structure. In fig. 4, the area gateway in the network area in front of the vehicle, the area gateway in the network area on the left side of the front of the vehicle, and the area gateway in the network area on the right side of the front of the vehicle are connected to the function processing unit 1 in the central computing platform through a second ring network structure denoted by 5. The area gateway in the network area on the left side of the middle of the vehicle, the area gateway in the network area on the right side of the middle of the vehicle, the area gateway in the network area on the left side of the rear of the vehicle and the area gateway in the network area on the right side of the rear of the vehicle are connected to the function processing unit 2 and the function processing unit 3 in the central computing platform by a second ring network structure, which is denoted by reference numeral 6.
Referring to fig. 3 and 4, taking the in-vehicle ethernet as an example, the in-vehicle network may include at least one ring network structure, and each of the ring network structures may include at least one area gateway and at least one function processing unit therein. The second ring network structure of the connection area gateway and the first ring network structure of the connection function processing unit constitute an ethernet backbone. In each ring network structure including the first ring network structure and the second ring network structure, critical data may be transmitted through a multi-path redundancy backup, improving reliability. Each sensor and actuator within the vehicle may be connected to the nearest area gateway, each of which exchanges and aggregates data over the ethernet backbone.
According to the technical scheme of the embodiment of the application, the key data are transmitted through the multi-path redundancy backup by using the ring network structure with topology flexibility. The regional gateway is connected with the function processing unit through the corresponding second annular network structure, so that key data in a network region can be ensured to interact with the function processing unit through a plurality of paths, and the requirement of reliability of a vehicle-mounted network in a communication process can be met.
In one example, the central computing platform may act as a global master clock (GM) to provide time synchronization information for all regional gateways. The clock on the network master node may be referred to as the master clock and the clock on the network slave node may be referred to as the slave clock.
In yet another example, ethernet backbone communications may be encapsulated based on an ethernet mature protocol. Network protocols that may be employed within a network zone (Inside zone) may include: at least one of an ETH (Ethernet) protocol, a CAN (Controller Area Network), and a LIN (Local Interconnect Network). Network protocols that may be employed Outside of the network area (Outside zone) may include the ETH protocol. The ETH Protocol may include at least one of SOME/IP (Scalable service-organized MiddlewarE over IP) and AVTP (Audio/video Transport Protocol). The SOME/IP is a communication mode of the vehicle-mounted Ethernet facing service. When a client wants to call or subscribe the service provided by the server, the position of the service in the system is firstly positioned through the SOME/IP, and the service state is determined so as to realize the subsequent processing. For trans-regional data transmission, by using a mature protocol on the Ethernet, such as SOME/IP or AVTP, the adoption of a unified data transmission protocol can reduce the dependence of the central processing unit on different bus protocol conversions.
In the embodiment of the application, on one hand, the message data are transmitted based on the transmission strategy of the message data to be transmitted, so that the transmission performance requirements of various types of message data in the communication process can be met, and the data transmission delay is effectively improved. On the other hand, a ring network structure with topological flexibility is adopted, so that key data can be transmitted through multi-path redundancy backup, and the reliability of network transmission is improved. The transmission strategy of the message data to be transmitted is combined with the design of the ring network structure of the vehicle-mounted Ethernet, so that the data transmission delay can be effectively improved, the requirement of the reliability of the vehicle-mounted Ethernet in the communication process can be met, and the transmission effect is better.
Fig. 5 is a schematic diagram of a data transmission control device of a vehicle ethernet according to an embodiment of the present application. As shown in fig. 5, the data transmission control device of the in-vehicle ethernet may include:
a first obtaining unit 100, configured to obtain message data to be transmitted in a vehicle-mounted ethernet;
a second obtaining unit 200, configured to obtain a transmission parameter from message data to be transmitted;
a determining unit 300, configured to determine a data type of the packet data to be transmitted according to the transmission parameter;
a transmission unit 400, configured to determine a transmission policy of the message data to be transmitted according to the data type of the message data to be transmitted, and transmit the message data based on the transmission policy of the message data to be transmitted; wherein the transmission strategy comprises the prior transmission of the delay sensitive data through the transmission control equipment.
In one embodiment, the determining unit 300 is configured to: determining the message data to be transmitted as delay sensitive data under the condition that the transmission parameters comprise time sensitive parameters;
the transmission unit 400 is configured to: under the condition that the message data to be transmitted is delay sensitive data, in the process of transmitting the delay sensitive data, other data except the delay sensitive data are controlled to stop transmission, and the delay sensitive data are transmitted preferentially.
In one embodiment, the determining unit 300 is configured to: under the condition that the transmission parameters do not include time sensitive parameters, determining that the message data to be transmitted is non-delay sensitive data;
the transmission unit 400 is configured to: and stopping transmitting the non-delay sensitive data when the message data to be transmitted is the non-delay sensitive data and the delay sensitive data is detected to start to be transmitted.
In one embodiment, the transmission unit 400 is configured to:
and controlling other types of data except the time delay sensitive type of data to stop transmission by using the switching state of a transmission gate of the time sensing shaper.
In one embodiment, the determining unit 300 is configured to: determining the message data to be transmitted as priority control data under the condition that the transmission parameters comprise priority parameters;
the transmission unit 400 is configured to: and under the condition that the message data to be transmitted is priority control data, controlling the transmission sequence of the priority control data according to the priority parameters.
In one embodiment, the determining unit 300 is configured to: determining the message data to be transmitted as large-flow data under the condition that the transmission parameters comprise time slot parameters;
the transmission unit 400 is configured to: and reserving a time slot with a preset size in a data packet of the large-flow data under the condition that the message data to be transmitted is the large-flow data.
In one embodiment, the transmission unit 400 is configured to:
and under the condition that the priority of the message data to be transmitted is lower than that of the large-flow data and the reserved time slot exists in the data packet of the large-flow data, transmitting the message data to be transmitted by using the time slot.
In one embodiment, an in-vehicle ethernet network comprises: a plurality of regional gateways and a central computing platform; wherein the content of the first and second substances,
the central computing platform comprises at least one function processing unit, wherein the at least one function processing unit is connected through a first ring network structure;
different area gateways in the area gateways are respectively arranged in different network areas of the vehicle-mounted Ethernet, wherein the vehicle-mounted Ethernet comprises a plurality of network areas, and the network areas are obtained by dividing based on positions; each of the plurality of regional gateways is connected with at least a portion of the at least one function processing unit via a corresponding second ring network structure.
The functions of each unit in the data transmission control device of the vehicle-mounted ethernet in the embodiment of the present application may refer to the corresponding description in the above method, and are not described herein again.
Fig. 6 is a block diagram of an electronic device for implementing a data transmission control method of a vehicle ethernet according to an embodiment of the present application. As shown in fig. 6, the control apparatus includes: a memory 910 and a processor 920, the memory 910 having stored therein instructions executable on the processor 920. When executing the instruction, the processor 920 implements the data transmission control method of the in-vehicle ethernet in the above-described embodiment. The number of the memory 910 and the processor 920 may be one or more. The control device is intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The control device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be examples only, and are not meant to limit implementations of the present application that are described and/or claimed herein.
The control device may further include a communication interface 930 for communicating with an external device for data interactive transmission. The various devices are interconnected using different buses and may be mounted on a common motherboard or in other manners as desired. The processor 920 may process instructions for execution within the control device, including instructions stored in or on a memory to display graphical information of a GUI on an external input/output apparatus (such as a display device coupled to an interface). In other embodiments, multiple processors and/or multiple buses may be used, along with multiple memories and multiple memories, as desired. Also, multiple control devices may be connected, with each device providing portions of the necessary operations (e.g., as a server array, a group of blade servers, or a multi-processor system). The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 6, but this is not intended to represent only one bus or type of bus.
Optionally, in an implementation, if the memory 910, the processor 920 and the communication interface 930 are integrated on a chip, the memory 910, the processor 920 and the communication interface 930 may complete communication with each other through an internal interface.
It should be understood that the processor may be a Central Processing Unit (CPU), other general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. A general purpose processor may be a microprocessor or any conventional processor or the like. It is noted that the processor may be an advanced reduced instruction set machine (ARM) architecture supported processor.
Embodiments of the present application provide a computer-readable storage medium (such as the above-mentioned memory 910) storing computer instructions, which when executed by a processor implement the methods provided in embodiments of the present application.
Alternatively, the memory 910 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to use of the data transmission control device of the in-vehicle ethernet, and the like. Further, the memory 910 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, memory 910 may optionally include memory located remotely from processor 920, which may be connected to the data transmission control device of the in-vehicle ethernet via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more (two or more) executable instructions for implementing specific logical functions or steps in the process. And the scope of the preferred embodiments of the present application includes other implementations in which functions may be performed out of the order shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. All or part of the steps of the method of the above embodiments may be implemented by hardware that is configured to be instructed to perform the relevant steps by a program, which may be stored in a computer-readable storage medium, and which, when executed, includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module may also be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. The storage medium may be a read-only memory, a magnetic or optical disk, or the like.
While the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (18)
1. A data transmission control method of a vehicle-mounted Ethernet is characterized by comprising the following steps:
acquiring message data to be transmitted in a vehicle-mounted Ethernet;
acquiring transmission parameters from the message data to be transmitted;
determining the data type of the message data to be transmitted according to the transmission parameters;
determining a transmission strategy of the message data to be transmitted according to the data type of the message data to be transmitted, and transmitting the message data based on the transmission strategy of the message data to be transmitted;
wherein the transmission strategy comprises the prior transmission of the delay sensitive data through the transmission control equipment.
2. The method of claim 1,
determining the data type of the message data to be transmitted according to the transmission parameters, including: determining the message data to be transmitted as delay sensitive data under the condition that the transmission parameters comprise time sensitive parameters;
determining a transmission strategy of the message data to be transmitted according to the data type of the message data to be transmitted, and transmitting the message data based on the transmission strategy of the message data to be transmitted, wherein the transmission strategy comprises the following steps: and under the condition that the message data to be transmitted is delay sensitive data, controlling other data except the delay sensitive data to stop transmitting in the process of transmitting the delay sensitive data, and preferentially transmitting the delay sensitive data.
3. The method of claim 1,
determining the data type of the message data to be transmitted according to the transmission parameters, including: under the condition that the transmission parameters do not include time sensitive parameters, determining that the message data to be transmitted is non-delay sensitive data;
determining a transmission strategy of the message data to be transmitted according to the data type of the message data to be transmitted, and transmitting the message data based on the transmission strategy of the message data to be transmitted, wherein the transmission strategy comprises the following steps: and stopping transmitting the non-delay sensitive data when the message data to be transmitted is the non-delay sensitive data and the delay sensitive data is detected to start transmitting.
4. The method of claim 2, wherein prioritizing transmission of delay sensitive type data by the transmission control device comprises:
and controlling other types of data except the time delay sensitive type of data to stop transmission by using the switching state of a transmission gate of the time sensing shaper.
5. The method according to any one of claims 1 to 4,
determining the data type of the message data to be transmitted according to the transmission parameters, including: determining the message data to be transmitted as priority control data under the condition that the transmission parameters comprise priority parameters;
determining a transmission strategy of the message data to be transmitted according to the data type of the message data to be transmitted, and transmitting the message data based on the transmission strategy of the message data to be transmitted, wherein the transmission strategy comprises the following steps: and controlling the transmission sequence of the priority control type data according to the priority parameter under the condition that the message data to be transmitted is the priority control type data.
6. The method according to any one of claims 1 to 4,
determining the data type of the message data to be transmitted according to the transmission parameters, including: determining the message data to be transmitted as large-flow data under the condition that the transmission parameters comprise time slot parameters;
the method further comprises the following steps: and reserving a time slot with a preset size in a data packet of the large-flow data under the condition that the message data to be transmitted is the large-flow data.
7. The method according to any one of claims 1 to 4, further comprising:
and under the condition that the priority of the message data to be transmitted is lower than that of the large-flow data and the reserved time slot exists in the data packet of the large-flow data, transmitting the message data to be transmitted by using the time slot.
8. The method according to any one of claims 1 to 4, wherein the onboard Ethernet network comprises: a plurality of regional gateways and a central computing platform; wherein the content of the first and second substances,
the central computing platform comprises at least one functional processing unit, wherein the at least one functional processing unit is connected through a first ring network structure;
different area gateways in the area gateways are respectively arranged in different network areas of the vehicle-mounted Ethernet, wherein the vehicle-mounted Ethernet comprises a plurality of network areas, and the network areas are obtained by dividing based on positions; each of the plurality of regional gateways is connected with at least a part of the at least one function processing unit through a corresponding second ring network structure.
9. A data transmission control device for a vehicle-mounted ethernet, comprising:
the first acquisition unit is used for acquiring message data to be transmitted in the vehicle-mounted Ethernet;
a second obtaining unit, configured to obtain a transmission parameter from the message data to be transmitted;
a determining unit, configured to determine a data type of the packet data to be transmitted according to the transmission parameter;
the transmission unit is used for determining a transmission strategy of the message data to be transmitted according to the data type of the message data to be transmitted and transmitting the message data based on the transmission strategy of the message data to be transmitted; wherein the transmission strategy comprises the prior transmission of the delay sensitive data through the transmission control equipment.
10. The apparatus of claim 9,
the determination unit is configured to: determining the message data to be transmitted as delay sensitive data under the condition that the transmission parameters comprise time sensitive parameters;
the transmission unit is used for: and under the condition that the message data to be transmitted is delay sensitive data, controlling other data except the delay sensitive data to stop transmitting in the process of transmitting the delay sensitive data, and preferentially transmitting the delay sensitive data.
11. The apparatus of claim 9,
the determination unit is configured to: under the condition that the transmission parameters do not include time sensitive parameters, determining that the message data to be transmitted is non-delay sensitive data;
the transmission unit is used for: and stopping transmitting the non-delay sensitive data when the message data to be transmitted is the non-delay sensitive data and the delay sensitive data is detected to start transmitting.
12. The apparatus of claim 10, wherein the transmission unit is configured to:
and controlling other types of data except the time delay sensitive type of data to stop transmission by using the switching state of a transmission gate of the time sensing shaper.
13. The apparatus according to any one of claims 9 to 12,
the determination unit is configured to: determining the message data to be transmitted as priority control data under the condition that the transmission parameters comprise priority parameters;
the transmission unit is used for: and controlling the transmission sequence of the priority control type data according to the priority parameter under the condition that the message data to be transmitted is the priority control type data.
14. The apparatus according to any one of claims 9 to 12,
the determination unit is configured to: determining the message data to be transmitted as large-flow data under the condition that the transmission parameters comprise time slot parameters;
the transmission unit is used for: and reserving a time slot with a preset size in a data packet of the large-flow data under the condition that the message data to be transmitted is the large-flow data.
15. The apparatus according to any one of claims 9 to 12, wherein the transmission unit is configured to:
and under the condition that the priority of the message data to be transmitted is lower than that of the large-flow data and the reserved time slot exists in the data packet of the large-flow data, transmitting the message data to be transmitted by using the time slot.
16. The apparatus of any of claims 9-12, wherein the vehicular ethernet network comprises: a plurality of regional gateways and a central computing platform; wherein the content of the first and second substances,
the central computing platform comprises at least one functional processing unit, wherein the at least one functional processing unit is connected through a first ring network structure;
different area gateways in the area gateways are respectively arranged in different network areas of the vehicle-mounted Ethernet, wherein the vehicle-mounted Ethernet comprises a plurality of network areas, and the network areas are obtained by dividing based on positions; each of the plurality of regional gateways is connected with at least a part of the at least one function processing unit through a corresponding second ring network structure.
17. An electronic device, comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1 to 8.
18. A computer readable storage medium having stored therein computer instructions which, when executed by a processor, implement the method of any one of claims 1 to 8.
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