CN115842783A - Stream data transmission control apparatus, vehicle, method, and computer program product - Google Patents
Stream data transmission control apparatus, vehicle, method, and computer program product Download PDFInfo
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- CN115842783A CN115842783A CN202310063969.2A CN202310063969A CN115842783A CN 115842783 A CN115842783 A CN 115842783A CN 202310063969 A CN202310063969 A CN 202310063969A CN 115842783 A CN115842783 A CN 115842783A
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The application provides a stream data transmission control device, a vehicle, a method and a computer program product, relating to the technical field of data transmission control, wherein the device is applied to the vehicle and comprises a gateway unit, a collection unit and N functional domain control units, wherein the gateway unit is in communication connection with the collection unit and the N functional domain control units; the acquisition unit is used for acquiring flow data; the functional domain control unit is configured to: sending a streaming data request to the gateway unit when there is a streaming data demand; the gateway unit is configured to: determining a transmission path of the streaming data based on the received streaming data request. The embodiment of the application realizes the dynamic control of the streaming data transmission path, so that the transmission of the streaming data is more flexible, the transmission of the streaming data can meet the service requirements of each functional domain, the network resources consumed by the transmission of the streaming data can be effectively reduced, and the transmission effect of the streaming data can be improved.
Description
Technical Field
The present application relates to the field of data transmission control technology, and in particular, to a streaming data transmission control apparatus, a vehicle, a method, and a computer program product.
Background
With the development trend of intelligent networking of vehicles, technologies such as intelligent driving big data cloud computing are continuously developed, and the requirement for vehicle-mounted stream data (such as audio stream data and video stream data) transmission is increasingly enhanced.
The conventional way of transmitting vehicle-mounted stream data is to encode digital signals output by a Sensor (Sensor) or an Image Signal Processing (ISP) into serial stream data, transmit the serial stream data to a receiving end through a high-speed Serializer-Deserializer (SerDes, also called a Serializer and a Deserializer), decode the serial stream data by the receiving end and restore the serial stream data into parallel data to send to a System On Chip (SOC), and the point-to-point mode has strong time and space coupling, so that the communication flexibility is greatly limited.
The Real-time Transport Protocol (RTP) based vehicle-mounted streaming data transmission mode is signal-oriented data transmission, and no matter whether a network needs, vehicle-mounted streaming data is continuously and circularly sent all the time, which easily causes network congestion, thereby causing streaming data transmission delay and influencing the streaming data transmission effect.
Therefore, the problem of poor vehicle-mounted stream data transmission effect exists in the prior art.
Disclosure of Invention
The application provides a streaming data transmission control device, a vehicle, a method and a computer program product, which aim to solve the problem of poor vehicle-mounted streaming data transmission effect in the prior art.
According to a first aspect of the present application, a streaming data transmission control device is provided, where the device is applied to a vehicle, and the device includes a gateway unit, a collection unit, and N functional domain control units, where the gateway unit is in communication connection with the collection unit and the N functional domain control units, and N is an integer greater than 1; wherein the content of the first and second substances,
the acquisition unit is used for acquiring flow data;
the functional domain control unit is configured to: when a streaming data requirement exists, sending a streaming data request to the gateway unit;
the gateway unit is configured to: determining a transmission path of the streaming data based on the received streaming data request.
According to a second aspect of the present application, there is provided a vehicle including the streaming data transmission control apparatus described in the first aspect of the present application.
According to a third aspect of the present application, there is provided a streaming data transmission control method applied to the vehicle of the second aspect, the method including:
receiving a flow data request from a functional domain control unit, the flow data request indicating that the functional domain control unit has a flow data requirement;
determining a transmission path of the streaming data based on the streaming data request;
and transmitting the flow data collected by the collection unit to a functional domain control unit sending the flow data request according to the transmission path of the flow data.
According to a fourth aspect of the present application, there is provided a computer program product comprising a computer program or instructions which, when executed by a processor, performs the method of the third aspect of the present application.
In the embodiment of the application, the functional domain control unit sends the streaming data request to the gateway unit when the streaming data request exists, and the gateway unit determines the transmission path of the streaming data based on the received streaming data request, so that the dynamic control of the streaming data transmission path is realized, the transmission of the streaming data is more flexible, the transmission of the streaming data can meet the service requirements of each functional domain, network resources consumed by the transmission of the streaming data can be effectively reduced, and the transmission effect of the streaming data can be improved.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present application, nor do they limit the scope of the present application. Other features of the present application will become apparent from the following description.
Drawings
The drawings are included to provide a better understanding of the present solution and are not intended to limit the present application. Wherein:
fig. 1 is a block diagram of a stream data transmission control apparatus according to an embodiment of the present application;
fig. 2 is a schematic diagram of a streaming data transmission control architecture according to an embodiment of the present application;
fig. 3 is a schematic diagram of a stream data transmission control interaction provided in an embodiment of the present application;
fig. 4 is a flowchart of a method for controlling streaming data transmission according to an embodiment of the present application.
Detailed description of the preferred embodiments
The following description of the exemplary embodiments of the present application, taken in conjunction with the accompanying drawings, includes various details of the embodiments of the application for the understanding of the same, which are to be considered exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
Referring to fig. 1, fig. 1 is an architecture diagram of a stream data transmission control device provided in an embodiment of the present application, where the stream data transmission control device is applied to a vehicle. As shown in fig. 1, the stream data transmission control apparatus 100 includes: the system comprises a gateway unit 101, a collection unit 102 and N functional domain control units 103, wherein the gateway unit 101 is in communication connection with the collection unit 102 and the N functional domain control units 103. The acquisition unit 102 is used for acquiring flow data. The functional domain control unit 103 is configured to: when there is a stream data demand, a stream data request is sent to the gateway unit 101. The gateway unit 101 is configured to: determining a transmission path of the streaming data based on the received streaming data request.
The Gateway unit 101 may be a central Gateway or a distributed Gateway, and the Gateway unit 101 may be, for example, a Body Gateway Module (BGM) of a vehicle. The gateway unit 101 is in communication connection with each functional domain control unit 103 of the vehicle, so that a backbone network architecture with centralized and regional vehicle functions can be formed, and the whole backbone network can be served. The functional domain control unit 103 of the vehicle may include, for example, an intelligent driving domain control unit, an intelligent cabin domain control unit, a vehicle body domain control unit, a chassis domain control unit, and the like.
In this embodiment of the application, the backbone network architecture further includes an acquisition unit 102, and the gateway unit 101 is in communication connection with the acquisition unit 102. The acquisition unit 102 may continuously acquire relevant data in real time, and the acquisition unit 102 may include, for example, a camera, a radar or other sensor, and the acquired data is streaming data, such as audio streaming data, video streaming data, perception-type streaming data, driving-type streaming data, and the like. In the embodiment of the present application, the backbone network architecture may be used to perform transmission control on the stream data collected by the collecting unit 102. For simplicity of description, in the embodiment of the present application, the functional domain control unit 103 may be understood as a requester of streaming data, and the gateway unit 101 may be understood as a controller or a decision maker of streaming data transmission.
In the prior art, a vehicle-mounted streaming data transmission mode based on RTP is signal-oriented data transmission, and vehicle-mounted streaming data is continuously and circularly transmitted regardless of the need of a network, which easily causes network congestion, thereby causing streaming data transmission delay and influencing the streaming data transmission effect.
In the embodiment of the present application, the gateway unit 101 may make a decision on a transmission path of the streaming data. The function domain control unit 103 may initiate a streaming data request to the gateway unit 101 according to the requirement of the streaming data by its own service, which is equivalent to the function domain control unit 103 requesting the streaming data service to the gateway unit 101. Therefore, the stream data transmission control method according to the embodiment of the present application may be understood as a Service-Oriented stream data transmission control method, which realizes Service-Oriented Architecture (SOA) Service, and services vehicle-mounted stream data to realize dynamic transmission of stream data. The term "servitization" is understood to mean: when a user (or called a service demander) needs a certain service, the service decision party provides the service to the user, and when the user does not need the service, the service decision party does not provide the service to the user. The technical essence of "servicing" is simply a "request" - "response" mechanism, i.e., a user initiates a request, and a service decision party responds to the request to provide a service for the user. The architecture shown in fig. 1 may be understood as an SOA architecture, wherein the flow data collected by the collection unit 102 may be understood as "service", the functional domain control unit 103 may be understood as a service demander, i.e., "user", and the gateway unit 101 may be understood as a service decider. The gateway unit 101 corresponds to a data transfer hub, which transmits stream data through SOA service requirements, and if the functional domain control unit 103 does not currently have a stream data requirement, the gateway unit 101 does not transmit the stream data to the functional domain control unit 103.
By carrying out SOA (service oriented architecture) service on the streaming data, the application programs in each functional domain can make streaming data service requirements according to self business requirements, and can acquire the required streaming data without coupling with the acquisition unit 102 or additionally adding a wire harness. If the application requirements of each functional domain are changed, the wiring harness does not need to be changed, only a new stream data request needs to be initiated, and the requirements of each functional domain on stream data can be flexibly met.
In the embodiment of the application, the functional domain control unit sends the streaming data request to the gateway unit when the streaming data request exists, and the gateway unit determines the transmission path of the streaming data based on the received streaming data request, so that the dynamic control of the streaming data transmission path is realized, the transmission of the streaming data is more flexible, the transmission of the streaming data can meet the service requirements of each functional domain, network resources consumed by the transmission of the streaming data can be effectively reduced, and the transmission effect of the streaming data can be improved.
With the continuous development of technologies such as networking trend, intelligent driving, big data cloud computing and the like, the application of technologies such as automatic driving and Advanced Driver Assistance System (ADAS) and the like has increasingly strengthened the demand of vehicle-mounted stream data transmission. Vehicle-mounted Ethernet (Ethernet) is a novel local area network technology for connecting an Electronic Control Unit (ECU) in a vehicle, can realize a data transmission rate of 100 megabits per second (Mbit/s) or even 10 gigabits per second (Gbit/s), can meet the requirements of the vehicle industry on high reliability, bandwidth allocation, low delay, real-time performance and the like, and is a preferred transmission mode of large-flow data.
Therefore, in this embodiment of the application, the backbone network architecture may use ethernet to implement transmission control of the stream data in each functional domain control unit 103, and the gateway unit 101 may obtain the stream data through the ethernet and transmit the stream data to the demand side through the ethernet.
In some embodiments, as shown in fig. 2, the gateway unit 101 is communicatively connected to the functional domain control unit 103 through an ethernet Switch (Ether Switch) 104.
Further, the Data Distribution Service (DDS) protocol may be used to stream the stream Data, so that the gateway unit 101 may include DDS middleware, and each domain control unit 103 may also include DDS. The DDS middleware of the gateway unit 101 may be communicatively connected to the ethernet switch 104 via ethernet, and the ethernet switch 104 may be communicatively connected to the DDS of each functional domain control unit 103 via ethernet. The ethernet switch 104 may send the stream data request of each functional domain control unit 103 to the DDS middleware of the gateway unit 101, and the gateway unit 101 may send the stream data required by the functional domain control unit 103 to the corresponding functional domain control unit 103 through the ethernet switch 104.
For the acquisition unit 102 that cannot communicate with the gateway unit 101 directly through ethernet, the gateway unit 101 may be communicatively connected to the acquisition unit 102 through a protocol conversion interface. Taking the collecting unit 102 as a Camera (Camera), as shown in fig. 2, and taking the streaming data as video streaming data as an example, the gateway unit 101 may be communicatively connected to the Camera 102a through a Camera Serial Interface (CSI) 105. CSI 105 may use a specific chip to convert the video stream data into IEEE 1722 protocol data and then transmit the video stream data to gateway unit 101 through the ethernet interface.
The number of the cameras 102a may be plural, and may include a front camera, a left camera, a right camera, a rear camera, and the like. And for each functional domain control unit 103, the streaming data required by the functional domain control unit 103 may come from a different camera 102a, so the streaming data request sent by the functional domain control unit 103 to the gateway unit 101 may also carry indication information for indicating the source of the streaming data (which may be a streaming data sender or a streaming data collector). Taking the stream data as the video stream data as an example, assuming that the functional domain control unit 103 needs the video stream data collected by the front camera, the stream data request may carry corresponding indication information, such as identification information of the front camera.
As shown in fig. 3, when receiving a stream data request (or called stream data service request), the gateway unit 101 may parse the stream data request and send a request response to the functional domain control unit 103, which may be understood as a service establishment procedure or a handshake procedure. Subsequently, the gateway unit 101 may transmit the streaming data to the domain control unit 103 that sent the request for the streaming data through the ethernet switch 104 according to the streaming data requirement of the domain control unit 103, which may be understood as a service process.
In some embodiments, the domain control unit 103 is further configured to:
after sending the stream data request to the gateway unit 101, if there is no stream data requirement, sending a stream data termination request to the gateway unit 101;
the gateway unit 101 is further configured to:
based on the received streaming data termination request, transmission of the streaming data to the function domain control unit 103 that has transmitted the streaming data termination request is stopped.
In this embodiment, the functional domain control unit 103 may request the gateway unit 101 to stop transmitting the streaming data when the streaming data is not needed, which can effectively reduce the waste of network bandwidth. As shown in fig. 3, after receiving the stream data termination request, the gateway unit 101 may send a termination response to the domain control unit 103 that sent the stream data termination request through the ethernet switch 104 and stop sending the stream data to the domain control unit 103, which may be understood as a service termination procedure.
As shown in fig. 3, the complete interaction process of the functional domain control unit 103 and the gateway unit 101 is as follows: the functional domain control unit 103 initiates a stream data request to the gateway unit 101; the gateway unit 101 sends a request response to the functional domain control unit 103; the gateway unit 101 sends the stream data to the functional domain control unit 103 according to the stream data requirement of the functional domain control unit 103; the functional domain control unit 103 sends a stream data termination request to the gateway unit 101; the gateway unit 101 transmits a termination response to the functional domain control unit 103 and stops transmitting the stream data to the functional domain control unit 103.
In some embodiments, the gateway unit 101 is further configured to:
and determining the transmission mode of the streaming data based on the received streaming data request, wherein the transmission mode of the streaming data comprises a unicast transmission mode and a multicast transmission mode.
In this embodiment, the gateway unit 101 may make a decision on the transmission mode of the streaming data. Gateway section 101 analyzes the stream data request from each functional domain control section 103, and can count the number of requesting parties corresponding to the stream data acquired by acquisition section 102, and determine whether the stream data transmission method is unicast transmission or multicast transmission, based on the number of requesting parties.
When the number of the demand parties is small, in order to improve the transmission reliability of the stream data, the stream data can be transmitted by adopting a unicast transmission mode. When the number of the requesting parties is large, multicast transmission may be used to transmit the stream data in order to improve the transmission efficiency of the stream data.
If the transmission mode of the stream data is determined to be a unicast transmission mode, the gateway unit 101 may add a unicast address to a packet of the stream data and transmit the stream data to the specific domain control unit 103 through the ethernet switch 104.
If the transmission method of the stream data is determined as the multicast transmission method, the gateway unit 101 may add a multicast address to a packet of the stream data, and transmit the stream data to each required domain control unit 103 through the ethernet switch 104.
It should be noted that, when the flow data required by each functional domain control unit 103 includes flow data acquired by one or more acquisition units 102, the gateway unit 101 may determine the transmission mode of the flow data acquired by each acquisition unit 102 according to the number of requesting parties corresponding to the flow data acquired by each acquisition unit 102. As an example, assuming that the functional domain control unit _1 needs the stream data collected by the collection unit _1 and the stream data collected by the collection unit _2, and the functional domain control unit _2 needs the stream data collected by the collection unit _2, the gateway unit 101 may determine that the transmission mode of the stream data collected by the collection unit _1 is a unicast transmission mode, and determine that the transmission mode of the stream data collected by the collection unit _2 is a multicast transmission mode.
By the implementation mode, the flexible control of the streaming data transmission mode is realized, the flexibility of streaming data transmission is further improved, the transmission reliability and the transmission efficiency of the streaming data can be considered, and the streaming data transmission effect can be improved.
In some embodiments, the gateway unit 101 is specifically configured to:
if only a first functional domain control unit in the N functional domain control units 103 has a stream data requirement, determining to transmit the stream data to the first functional domain control unit in a unicast transmission manner;
if there is a stream data demand for P domain control units 103 of the N domain control units 103, determining to transmit the stream data to the P domain control units 103 in a multicast transmission manner, where P is an integer greater than 1.
According to the embodiment, the transmission reliability and the transmission efficiency of the streaming data can be considered, so that the transmission effect of the streaming data can be improved.
In some embodiments, if there is a flow data requirement for P domain control units 103 out of the N domain control units 103, the gateway unit 101 is further configured to:
determining the transmission priority of the P functional domain control units 103 based on the functional domain types of the P functional domain control units 103;
and sequentially transmitting the stream data to the P functional domain control units 103 according to the sequence from the high transmission priority to the low transmission priority.
In this embodiment, the gateway unit 101 may make a decision on the transmission priority of the streaming data. When a plurality of functional domain control units 103 simultaneously require the same stream data, the gateway unit 101 may determine the transmission priority of each functional domain control unit 103 based on the functional domain type of the functional domain control unit 103, and thus, may preferentially provide the stream data for the functional domain having a higher transmission priority, thereby being able to preferentially ensure the service demand of the critical functional domain.
As an example, for a functional domain in which the efficiency of streaming data transmission is related to the running safety of the vehicle, streaming data may be preferentially provided thereto. Whereas for the functional domain where streaming data transfer efficiency only relates to the user experience, streaming data may be transferred later for it.
It should be noted that the transmission efficiency of different streaming data may have different effects on different functional domains. For example, for video stream data collected by a camera, the transmission efficiency of the video stream data has a large influence on the intelligent cab domain, and the influence on the intelligent cab domain is small, so that when the intelligent cab domain and the intelligent cab domain have a demand for the video stream data collected by the same camera at the same time, the transmission priority of the intelligent cab domain control unit can be determined to be higher than that of the intelligent cab domain control unit. For another example, for the wheel speed flow data collected by the wheel speed sensor, the transmission efficiency has a larger influence on the chassis domain and a smaller influence on the body domain, so that when there is a demand for the wheel speed flow data in both the chassis domain and the body domain, it can be determined that the transmission priority of the chassis domain control unit is higher than that of the body domain control unit.
By the implementation mode, the flexible control of the streaming data transmission priority is realized, the flexibility of the streaming data transmission is further improved, the requirement of a functional domain on the streaming data transmission efficiency can be better met, and the streaming data transmission effect can be improved.
In some embodiments, the functional domain types include an intelligent driving domain type and a non-intelligent driving domain type, wherein a transmission priority of a functional domain control unit corresponding to the intelligent driving domain type is higher than a transmission priority of a functional domain control unit corresponding to the non-intelligent driving domain type.
With the development of intelligent driving technology, the high-reliability and low-delay transmission of streaming data is of great importance to the development of intelligent driving technology.
In this embodiment, for the smart driving vehicle, the functional domain types may be divided into the smart driving domain type and the non-smart driving domain type, and the functional domain control unit of the smart driving domain type is ensured to have a higher priority of stream data transmission. Therefore, the intelligent driving vehicle stream data can be transmitted with high reliability and low delay, and data transmission guarantee is provided for the intelligent driving technology.
Furthermore, the gateway unit 101 may also make a decision on the Quality of Service (QoS) of the transmission of the streaming data. For example, the gateway unit 101 may determine the stream data transmission QoS of each functional domain control unit 103 based on the functional domain type of the functional domain control unit 103 to better satisfy the requirements of the functional domain on the stream data transmission quality. As an example, for a smart-driving vehicle, the flow data transmission QoS of the smart-driving domain type functional domain control unit may be higher than the flow data transmission QoS of the non-smart-driving domain type functional domain control unit.
In summary, the embodiment of the present application can not only realize dynamic control of a stream data transmission path, but also realize flexible control in aspects of a stream data transmission mode, a transmission priority, and the like, so that the transmission of the stream data is more flexible, the transmission of the stream data can meet the service requirements of each functional domain, network resources consumed by the stream data transmission can be effectively reduced, and the transmission effect of the stream data can be improved.
The embodiment of the present application further provides a vehicle, which includes any one of the streaming data transmission control devices in the foregoing embodiments, and can achieve the same technical effects, and for avoiding repetition, details are not repeated here.
Referring to fig. 4, fig. 4 is a flowchart of a streaming data transmission control method provided in an embodiment of the present application, where the streaming data transmission control method is applicable to a vehicle. As shown in fig. 4, the streaming data transmission control method includes the steps of:
step 401: receiving a stream data request from a functional domain control unit, the stream data request indicating that there is a stream data demand by the functional domain control unit;
step 402: determining a transmission path of the streaming data based on the streaming data request;
step 403: and transmitting the streaming data collected by the collection unit to a functional domain control unit sending the streaming data request according to the transmission path of the streaming data.
The execution subject of the embodiment of the present application may be a gateway unit in a vehicle.
In the embodiment of the application, the functional domain control unit sends the streaming data request to the gateway unit when the streaming data request exists, and the gateway unit determines the transmission path of the streaming data based on the received streaming data request, so that the dynamic control of the streaming data transmission path is realized, the transmission of the streaming data is more flexible, the transmission of the streaming data can meet the service requirements of each functional domain, network resources consumed by the transmission of the streaming data can be effectively reduced, and the transmission effect of the streaming data can be improved.
In some embodiments, the method further comprises:
receiving a stream data termination request from a functional domain control unit;
based on the stream data termination request, stopping transmission of the stream data to a functional domain control unit that sent the stream data termination request.
In some embodiments, the method further comprises:
determining a transmission mode of the streaming data based on the streaming data request, wherein the transmission mode of the streaming data comprises a unicast transmission mode or a multicast transmission mode;
the transmitting the flow data collected by the collecting unit to the functional domain control unit sending the flow data request comprises the following steps:
and transmitting the streaming data acquired by the acquisition unit to a functional domain control unit sending the streaming data request by adopting the streaming data transmission mode.
In some embodiments, the determining, based on the streaming data request, a transmission mode of the streaming data includes:
determining to transmit the streaming data to the first domain control unit in a unicast transmission manner in a case where only a first domain control unit of the N domain control units transmits the streaming data request;
and when P functional domain control units in the N functional domain control units send the stream data request, determining to transmit the stream data to the P functional domain control units in a multicast transmission mode, wherein P is an integer larger than 1.
In some embodiments, the method further comprises:
determining transmission priorities of P functional domain control units based on functional domain types of the P functional domain control units under the condition that P functional domain control units in the N functional domain control units send the streaming data request;
the transmitting the flow data collected by the collecting unit to the functional domain control unit sending the flow data request comprises:
and sequentially transmitting the streaming data to the P functional domain control units according to the sequence of the transmission priority from high to low.
In some embodiments, the functional domain types include an intelligent driving domain type and a non-intelligent driving domain type, wherein a transmission priority of a functional domain control unit corresponding to the intelligent driving domain type is higher than a transmission priority of a functional domain control unit corresponding to the non-intelligent driving domain type.
In some embodiments, the streaming data comprises video streaming data.
It should be noted that, for related implementation manners of the stream data transmission control method in the embodiment of the present application, reference may be made to related implementation manners of the stream data transmission control device, and the same beneficial effects can be achieved.
The methods in the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described herein are performed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, a network appliance, a user equipment, a core network appliance, an OAM, or other programmable device.
The computer program or instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer program or instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire or wirelessly. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that integrates one or more available media. The usable medium may be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape; optical media such as digital video disks; but also semiconductor media such as solid state disks. The computer readable storage medium may be volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.
It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present application may be executed in parallel, sequentially, or in different orders, as long as the desired results of the technical solutions disclosed in the present application can be achieved, and the present invention is not limited herein.
The above-described embodiments should not be construed as limiting the scope of the present application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A flow data transmission control device is characterized in that the device is applied to a vehicle and comprises a gateway unit, a collection unit and N functional domain control units, wherein the gateway unit is in communication connection with the collection unit and the N functional domain control units, and N is an integer greater than 1; wherein the content of the first and second substances,
the acquisition unit is used for acquiring flow data;
the functional domain control unit is configured to: when a streaming data requirement exists, sending a streaming data request to the gateway unit;
the gateway unit is configured to: determining a transmission path of the streaming data based on the received streaming data request.
2. The apparatus of claim 1, wherein the domain control unit is further configured to:
after sending a streaming data request to the gateway unit, if there is no streaming data requirement, sending a streaming data termination request to the gateway unit;
the gateway unit is further configured to:
based on the received streaming data termination request, the transmission of the streaming data to the function domain control unit that sent the streaming data termination request is stopped.
3. The apparatus of claim 1, wherein the gateway unit is further configured to:
and determining the transmission mode of the streaming data based on the received streaming data request, wherein the transmission mode of the streaming data comprises a unicast transmission mode and a multicast transmission mode.
4. The apparatus according to claim 3, wherein the gateway unit is specifically configured to:
if only a first functional domain control unit in the N functional domain control units has a stream data requirement, determining to transmit the stream data to the first functional domain control unit in a unicast transmission mode;
if P functional domain control units in the N functional domain control units have stream data requirements, determining to transmit the stream data to the P functional domain control units in a multicast transmission mode, wherein P is an integer greater than 1.
5. The apparatus of any of claims 1 to 4, wherein if there is a flow data requirement for P of the N domain control units, the gateway unit is further configured to:
determining transmission priorities of the P functional domain control units based on the functional domain types of the P functional domain control units;
and sequentially transmitting the streaming data to the P functional domain control units according to the sequence of the transmission priority from high to low.
6. The apparatus of claim 5, wherein the functional domain types comprise a smart driving domain type and a non-smart driving domain type, wherein a transmission priority of a functional domain control unit corresponding to the smart driving domain type is higher than a transmission priority of a functional domain control unit corresponding to the non-smart driving domain type.
7. The apparatus of claim 1, wherein the streaming data comprises video streaming data, wherein the capture unit comprises a camera, and wherein the gateway unit is communicatively coupled to the capture unit via a Camera Serial Interface (CSI).
8. A vehicle characterized by comprising the streaming data transmission control apparatus of any one of claims 1 to 7.
9. A stream data transmission control method applied to the vehicle according to claim 8, the method comprising:
receiving a stream data request from a functional domain control unit, the stream data request indicating that there is a stream data demand by the functional domain control unit;
determining a transmission path of the streaming data based on the streaming data request;
and transmitting the streaming data collected by the collection unit to a functional domain control unit sending the streaming data request according to the transmission path of the streaming data.
10. A computer program product comprising a computer program or instructions for implementing the method as claimed in claim 9 when the computer program or instructions are executed by a processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310063969.2A CN115842783B (en) | 2023-01-12 | 2023-01-12 | Streaming data transmission control device, vehicle, method and computer program product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202310063969.2A CN115842783B (en) | 2023-01-12 | 2023-01-12 | Streaming data transmission control device, vehicle, method and computer program product |
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| CN115842783A true CN115842783A (en) | 2023-03-24 |
| CN115842783B CN115842783B (en) | 2023-06-06 |
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