CN117440446A - Data transmission method and device based on data distribution service - Google Patents
Data transmission method and device based on data distribution service Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
- H04W8/20—Transfer of user or subscriber data
Abstract
The invention provides a data transmission method and a device based on data distribution service, which relate to the technical field of wireless communication and are used for a service management system, wherein the service management system is loaded with the data distribution service; the method comprises the following steps: obtaining a theme type of each device group in a plurality of device groups accessed to a target virtual network group; each equipment group comprises at least one publishing equipment and at least one subscribing equipment, wherein the at least one publishing equipment respectively establishes a publishing relationship with the data distribution service, and the at least one subscribing equipment respectively establishes a subscribing relationship with the data distribution service; determining a service quality rule corresponding to the target equipment group according to the theme type of the target equipment group; and calling a publishing interface and a subscribing interface corresponding to the data distribution service, and controlling at least one publishing device and at least one subscribing device in the target device group to perform data transmission according to the service quality rule corresponding to the target device group. By the method provided by the invention, the end-to-end data can be efficiently transmitted.
Description
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a data transmission method and apparatus based on a data distribution service.
Background
Compared to public 5G networks, 5G private networks are often used in the bearer vertical domain, which tends to place more stringent quality of service requirements on wireless data transmission, such as more reliable transmission bandwidth, deterministic transmission delay, and higher transmission reliability.
In the field of 5G private network applications, such as intelligent factories, flexible manufacturing, etc., one or more sets of 5G terminals are exposed to various types of logical networking architectures, such as point-to-point communications, bus architectures, star architectures, etc., for example, for typical connection types. The data types and the service QoS level requirements transferred between the terminals are different, for example, the transmission of machine vision and point cloud data is very sensitive to the effective bandwidth and timeliness of communication, asynchronous communication such as AGV control and mechanical arm control, synchronous communication among multiple mechanical arms, multiple AGVs and industrial equipment, and the like, and the requirements on the time delay and the reliability of the communication are more severe.
How to realize reliable and stable data transmission between terminals when the 5G private network bears the distributed real-time communication system and the application is a technical problem to be solved at present.
Disclosure of Invention
The invention provides a data transmission method and device based on data distribution service, which are used for solving the defects in the prior art.
The invention provides a data transmission method based on data distribution service, which is used for a business management system, wherein the business management system is loaded with the data distribution service;
the method comprises the following steps:
obtaining a theme type of each device group in a plurality of device groups accessed to a target virtual network group; each equipment group comprises at least one publishing equipment and at least one subscribing equipment, wherein the at least one publishing equipment respectively establishes a publishing relationship with the data distribution service, and the at least one subscribing equipment respectively establishes a subscribing relationship with the data distribution service;
determining a target equipment group which needs to carry out data transmission, and determining a service quality rule corresponding to the target equipment group according to the theme type of the target equipment group; wherein, the service quality rule is obtained through an interface provided by the data distribution service;
and calling a publishing interface and a subscribing interface corresponding to the data distribution service, and controlling at least one publishing device and at least one subscribing device in the target device group to perform data transmission according to the service quality rule corresponding to the target device group.
According to the data transmission method based on the data distribution service provided by the invention, before the theme type of each device group in the plurality of device groups accessed to the target virtual network group is acquired, the method further comprises the following steps:
acquiring communication demand information of each device group in the plurality of device groups;
generating a scene-level configuration file according to the communication requirement information of each device group in the plurality of device groups; the scene-level configuration file is used for determining a plurality of equipment groups belonging to the same target virtual network group, and the scene-level configuration file contains the theme type of each equipment group in the plurality of equipment groups of the target virtual network group;
the obtaining the theme type of each device group in the plurality of device groups accessed to the target virtual network group includes:
and acquiring the theme type of each device group in the plurality of device groups accessed to the target virtual network group according to the scene-level configuration file.
According to the data transmission method based on the data distribution service provided by the invention, the determining the corresponding service quality rule of the target equipment group according to the theme type of the target equipment group comprises the following steps:
Determining an initial service quality rule corresponding to the target equipment group at an application side according to the theme type of the target equipment group;
and generating a service quality rule corresponding to the target equipment group on the wireless network side through interface mapping provided by the data distribution service according to the initial service quality rule.
According to the data transmission method based on the data distribution service provided by the invention, after the service quality rule corresponding to the target equipment group at the wireless network side is generated through the interface mapping provided by the data distribution service according to the initial service quality rule, the method further comprises the following steps:
and matching a target scheduling strategy corresponding to the service quality rule according to the service quality rule corresponding to the target equipment group at the wireless network side.
According to the data transmission method based on the data distribution service provided by the invention, the publishing interface and the subscribing interface corresponding to the data distribution service are called, and at least one publishing device and at least one subscribing device in the target device group are controlled to perform data transmission according to the service quality rule corresponding to the target device group, and the method comprises the following steps:
and calling a publishing interface and a subscribing interface corresponding to the data distribution service, and controlling at least one publishing device and at least one subscribing device in the target device group to perform data transmission according to the service quality rule corresponding to the target device group and the target scheduling policy corresponding to the service quality rule.
According to the data transmission method based on the data distribution service provided by the invention, before the publishing interface and the subscribing interface corresponding to the data distribution service are called, the method further comprises the following steps:
based on PDP and EDP, mutual discovery of at least one publishing device and at least one subscribing device in each device group of the target virtual network group is realized through the data distribution service.
The invention also provides a data transmission device based on the data distribution service, which is used for a business management system, wherein the business management system is loaded with the data distribution service;
the device comprises:
the acquisition module is used for acquiring the theme type of each device group in the plurality of device groups accessed to the target virtual network group; each equipment group comprises at least one publishing equipment and at least one subscribing equipment, wherein the at least one publishing equipment respectively establishes a publishing relationship with the data distribution service, and the at least one subscribing equipment respectively establishes a subscribing relationship with the data distribution service;
the determining module is used for determining a target equipment group needing data transmission, and determining a service quality rule corresponding to the target equipment group according to the theme type of the target equipment group; wherein, the service quality rule is obtained through an interface provided by the data distribution service;
And the communication module is used for calling the publishing interface and the subscribing interface corresponding to the data distribution service and controlling at least one publishing device and at least one subscribing device in the target device group to perform data transmission according to the service quality rule corresponding to the target device group.
The invention provides a data transmission device based on data distribution service, which further comprises a generation module, wherein the generation module is specifically used for:
before the theme type of each device group in a plurality of device groups accessed to a target virtual network group is acquired, acquiring communication requirement information of each device group in the plurality of device groups;
generating a scene-level configuration file according to the communication requirement information of each device group in the plurality of device groups; the scene-level configuration file is used for determining a plurality of equipment groups belonging to the same target virtual network group, and the scene-level configuration file contains the theme type of each equipment group in the plurality of equipment groups of the target virtual network group;
the acquisition module is specifically configured to:
and acquiring the theme type of each device group in the plurality of device groups accessed to the target virtual network group according to the scene-level configuration file.
The invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing a data transmission method based on a data distribution service as described in any one of the above when executing the program.
The present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a data transmission method based on a data distribution service as described in any of the above.
The invention also provides a computer program product comprising a computer program which when executed by a processor implements a data transmission method based on a data distribution service as described in any of the above.
The invention provides a data transmission method and a device based on data distribution service, which are used for a business management system, wherein the business management system is loaded with the data distribution service; the method comprises the steps of obtaining a theme type of each device group in a plurality of device groups accessed to a target virtual network group, wherein each device group comprises at least one publishing device and at least one subscribing device, the at least one publishing device respectively establishes a publishing relationship with a data distribution service, the at least one subscribing device respectively establishes a subscribing relationship with the data distribution service, determining a target device group needing to conduct data transmission, determining a service quality rule corresponding to the target device group according to the theme type of the target device group, obtaining the service quality rule through an interface provided by the data distribution service, calling a publishing interface and a subscribing interface corresponding to the data distribution service, and controlling the at least one publishing device and the at least one subscribing device in the target device group to conduct data transmission according to the service quality rule corresponding to the target device group. According to the invention, different theme types are defined for each equipment group, when the equipment groups publish data and subscribe data, interfaces are provided through the data distribution service, corresponding service quality rules are obtained through the interfaces according to the theme types, the publishing interfaces and the subscribing interfaces corresponding to the data distribution service are called, and communication between at least one publishing equipment and at least one subscribing equipment in the equipment groups is carried out according to the service quality rules, so that end-to-end data efficient transmission is realized.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flow chart of a data transmission method based on a data distribution service provided by the invention;
FIG. 2 is a schematic diagram of the logical structure of a data distribution service;
FIG. 3 is a schematic diagram of a data distribution service in a protocol hierarchy;
fig. 4 is a schematic block diagram of a data transmission method based on a data distribution service provided by the present invention;
FIG. 5 is a schematic diagram of a networking architecture of a data transmission method based on a data distribution service provided by the present invention;
fig. 6 is a complete flowchart of a data transmission method based on a data distribution service provided by the present invention;
fig. 7 is a schematic structural diagram of a data transmission device based on a data distribution service provided by the present invention;
fig. 8 is a schematic structural diagram of an electronic device provided by the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
A data transmission method and apparatus based on a data distribution service according to the present invention will be described with reference to fig. 1 to 8.
Fig. 1 is a flow chart of a data transmission method based on a data distribution service provided in this embodiment, and as shown in fig. 1, the data transmission method based on a data distribution service provided in this embodiment is used in a service management system, where the service management system is loaded with the data distribution service.
It should be noted that, compared to public 5G networks, 5G private networks are generally used in the bearer vertical domain, and more stringent service quality requirements are often imposed on wireless data transmission, such as more reliable transmission bandwidth, deterministic transmission delay, and higher transmission reliability.
In the field of 5G private network applications, such as intelligent factories, flexible manufacturing, etc., one or more sets of 5G terminals are exposed to various types of logical networking architectures, such as point-to-point communications, bus architectures, star architectures, etc., for example, for typical connection types. The data types and service QoS (Quality of Service ) level requirements transferred between the terminals are different, for example, the transmission of machine vision and point cloud data is very sensitive to the effective bandwidth and timeliness of communication, asynchronous communication such as AGV control and mechanical arm control, synchronous communication among multiple mechanical arms, multiple AGVs and industrial equipment, and the like, and the requirements on the time delay and reliability of the communication are more severe. Based on this, the present embodiment proposes a data transmission method based on a data distribution service, for solving at least one of the above problems.
Fig. 2 is a schematic logic structure diagram of a data distribution service, and as shown in fig. 2, the Data Distribution Service (DDS) is a data-centric real-time data distribution technology based on publish/subscribe, and based on open standards, and has a main technical advantage that decoupling of a data transmitting end and a data receiving end is achieved through publish and subscribe specific Topic types (Topic), so that compared with a client/server model with connection as a center, the Data Distribution Service (DDS) can better adapt to discrete complex systems, communication transmission between systems, and the like.
It should be noted that, with continued reference to fig. 2, the Participant particarant is an entity in a distributed system, and is generally regarded as a sender public and a Subscriber in a messaging system, for sending messages and subscribing to messages. An Endpoint is an address in network communications, typically considered the address of a sender and a subscriber, between which data may be transferred.
The data writer DataWriter is responsible for writing data to a specific Topic type Topic and transmitting the data to the data reader DataReader that subscribes to the Topic. Through the DataWriter, the user can publish data, register and unregister data instances, acquire status information, and set QoS (Quality of Service ) for data writing.
The data distribution service includes the following features:
1. a high performance, scalable, secure, data-centric publish/subscribe mechanism;
2. a completely decentralised architecture that establishes links through auto-discovery services between matching nodes;
3. providing rich communication service quality control capabilities including availability, resource utilization, reliability and timeliness in data distribution;
4. interoperable data sharing, scalable data model, coding and presentation independent of hardware platform;
5. RPC (remote procedure call), security, resource constrained devices, web integration, and OPC UA (unified architecture) integration features are newly added.
Fig. 3 is a schematic diagram of a data distribution service in a protocol hierarchy, as shown in fig. 3, as an open standard-based communication middleware, providing a standard API (Application Programming Interface ) interface independent of the underlying soft and hard plus architecture, carrying the upper discrete real-time communication requirements.
Specifically, RTP (Realtime Transport Protocol, real-time transport protocol) is a transport protocol specifically designed for real-time streaming media; RTP SWriter is an encapsulator for real-time transport protocol (RTP) packet encapsulation, RTP sreater is an decapsulator for real-time transport protocol (RTP) packet decapsulation, and is used with the RTP protocol to transport real-time audio and video streams between applications.
Among the transport layers, TCP (Transmission Control Protocol ) is a connection-oriented transport layer protocol that provides a reliable data transmission service to ensure data integrity and reliability, for example, for file transfer and email applications; UDP (User Datagram Protocol ) is a connectionless transport layer protocol, which is typically faster than TCP; shared Memory (Shared Memory) is an efficient method of inter-process communication that allows multiple processes to share the same block of physical Memory space.
The method comprises the following steps:
step 100, obtaining a theme type of each device group in a plurality of device groups accessed to a target virtual network group; each device group comprises at least one publishing device and at least one subscribing device, wherein the at least one publishing device respectively establishes a publishing relationship with the data distribution service, and the at least one subscribing device respectively establishes a subscribing relationship with the data distribution service.
It should be noted that, the devices may be terminal devices using 5G communication, and each device group includes at least one publishing device and at least one subscribing device, where the loose coupling characteristic of publishing/subscribing is applicable to a scenario where one publishing device performs publishing, multiple subscribing devices perform subscribing, or multiple publishing devices perform publishing, and one device performs subscribing. For example, sensor parameters can be published for multiple devices, and the logger subscribes to and stores; the controller initiates the command, the multi-device receives, etc.
The core network is one of the most important components of the communication network, and is responsible for handling and managing communication data and for data transmission between different parts of the communication network. The core network may be comprised of a number of different network nodes including routers, switches, gateways, base stations, and the like. In 5G networks, the core network is further simplified and optimized to support faster data transmission speeds and more efficient resource utilization. The 5G core network adopts new network architecture and technology, such as network slicing, edge computing, cloud network and the like, so as to support various application scenes and business requirements.
Fig. 4 is a schematic block diagram of a data transmission method based on a data distribution service provided in this embodiment, as shown in fig. 4, in the data distribution service, a set of functional interfaces with a 5G network control plane is added, where the 5GC control plane is one of core components of the 5GC (5 th Generation Core Network, fifth generation core network), and translates a QoS (Quality of Service ) requirement of an Application (APP) on data transmission into a bearer requirement of the 5G network on corresponding data, that is, a Topic-to-5G QoS, so as to implement high-reliability end-to-end data transmission.
With continued reference to fig. 4, upf is an abbreviation for user plane function (User Plane Function), which is an important component of the 5G core network system architecture and is mainly responsible for routing and forwarding of 5G core network user plane packets, data and service identification, action and policy enforcement, etc.; DN is an abbreviation of Data Network (Data Network), and refers to a target Network other than a 5G Network, such as the internet, an enterprise Network, an operator Network, etc., and UPF is used as a connection point between a mobile Network and a Data Network to split a user Data stream to a corresponding DN.
In a 5G core network, PDU session (Packet Data Unit Session) refers to a connection-oriented data transfer session established over an end-to-end connection between a User Equipment (UE) and the network; a 5QI (quality indicator) is a parameter used to indicate the quality of a received signal and to measure the strength and quality of a wireless signal for appropriate adjustment in a communication link. In PDU session 1, normal data 5qi=7 is guaranteed, and bandwidth data 5qi=4 is guaranteed; in PDU session 2, low latency control class data 5qi=82 is guaranteed.
Specifically, the target virtual network group first needs to be configured before data transmission is performed. Configuring a target virtual network Group, namely a 5G-LAN VN Group, through a core network; the method comprises the steps that a target virtual network group comprises a plurality of equipment groups, a scene-level configuration file is generated by acquiring communication requirement information of each equipment group in the plurality of equipment groups, the scene-level configuration file comprises a theme type Topic of each equipment group in the plurality of equipment groups of the target virtual network group, and the scene-level configuration file is issued through a service server; and configuring 5G network QoS rule templates corresponding to different theme types through a core network control plane.
Different QoS rules of Topic may put different requirements on the scheduling policy and rules of the 5G network to carry data, for example, loadlineqos (deadline quality of service), and latencybutput QoS (delay budget quality of service), which require that the 5G network complete transmission and scheduling of data as fast as possible, and ReliableQoS (reliability quality of service) and corresponding History layer number may affect whether the 5G air interface adopts a reliable transmission mechanism, for example, RLC AM mode. Therefore, in the data distribution service, a set of functional interfaces with the 5G network control surface is added to translate the QoS requirement of the application on the data transmission into the bearing requirement of the 5G network on the corresponding data.
Step 200, determining a target equipment group needing data transmission, and determining a service quality rule corresponding to the target equipment group according to the theme type of the target equipment group; wherein the quality of service rules are obtained through an interface provided by the data distribution service.
Specifically, a device group needing to perform data transmission is determined to be a target device group, at least one publishing device of the target device group respectively establishes a publishing relationship with the data distribution service, and at least one subscribing device respectively establishes a subscribing relationship with the data distribution service. And determining a service quality rule of the theme type in the communication process according to the theme type of the target equipment group obtained by the steps, transmitting the service quality rule to a 5G network control surface through an interface provided by a data distribution service, mapping the service quality rule to a corresponding QoS template by the control surface, and realizing communication according to the service quality rule required by the theme type.
And 300, calling a publishing interface and a subscribing interface corresponding to the data distribution service, and controlling at least one publishing device and at least one subscribing device in the target device group to perform data transmission according to the service quality rule corresponding to the target device group.
It should be noted that the data distribution service participant discovery protocol PDP (Participant Discovery Protocol) is a network application protocol for defining how participants in the data distribution service discover each other in the network. Once participants discover each other, they can exchange information between Endpoints, explicit publishers and subscribers of data, and QoS rule information corresponding to each endpoint using endpoint discovery protocol EDP (Endpoint Discovery Protocol).
Specifically, after the device configuration is completed, before the devices start to communicate, the data distribution service performs the data distribution service PDP and the data distribution service EDP within the target virtual network group, and mutual discovery is completed between the devices.
Further, in the device communication process, a publishing interface and a subscribing interface corresponding to the data distribution service are called, and at least one publishing device and at least one subscribing device in the target device group are controlled to conduct data transmission according to the service quality rule corresponding to the target device group.
The above is a description of the steps of the data transmission method based on the data distribution service provided by the present invention. As can be seen from the description of the above steps, the data transmission method based on the data distribution service provided by the present invention is used for a service management system, in which the data distribution service is loaded; the method comprises the steps of obtaining a theme type of each device group in a plurality of device groups accessed to a target virtual network group, wherein each device group comprises at least one publishing device and at least one subscribing device, the at least one publishing device respectively establishes a publishing relationship with a data distribution service, the at least one subscribing device respectively establishes a subscribing relationship with the data distribution service, determining a target device group needing to conduct data transmission, determining a service quality rule corresponding to the target device group according to the theme type of the target device group, obtaining the service quality rule through an interface provided by the data distribution service, calling a publishing interface and a subscribing interface corresponding to the data distribution service, and controlling the at least one publishing device and the at least one subscribing device in the target device group to conduct data transmission according to the service quality rule corresponding to the target device group. According to the invention, different theme types are defined for each equipment group, when the equipment groups publish data and subscribe data, interfaces are provided through the data distribution service, corresponding service quality rules are obtained through the interfaces according to the theme types, the publishing interfaces and the subscribing interfaces corresponding to the data distribution service are called, and communication between at least one publishing equipment and at least one subscribing equipment in the equipment groups is carried out according to the service quality rules, so that end-to-end data efficient transmission is realized.
Based on the above embodiment, in this embodiment, before acquiring the theme type of each device group in the plurality of device groups accessed to the target virtual network group in step 100, the method further includes:
acquiring communication demand information of each device group in the plurality of device groups;
generating a scene-level configuration file according to the communication requirement information of each device group in the plurality of device groups; the scene-level configuration file is used for determining a plurality of equipment groups belonging to the same target virtual network group, and the scene-level configuration file contains the theme type of each equipment group in the plurality of equipment groups of the target virtual network group.
Specifically, the target virtual network group first needs to be configured before data transmission is performed. Configuring a target virtual network Group, namely a 5G-LAN VN Group, through a core network; the method comprises the steps that a target virtual network group comprises a plurality of equipment groups, a scene-level configuration file is generated by acquiring communication requirement information of each equipment group in the plurality of equipment groups, the scene-level configuration file comprises a theme type Topic of each equipment group in the plurality of equipment groups of the target virtual network group, and the scene-level configuration file is issued through a service server; and configuring 5G network QoS rule templates corresponding to different theme types through a core network control plane.
Step 100 obtains a topic type for each of a plurality of device groups that access a target virtual network group, comprising:
and acquiring the theme type of each device group in the plurality of device groups accessed to the target virtual network group according to the scene-level configuration file.
According to the data transmission method based on the data distribution service, the configuration of the target virtual network group formed by the terminals participating in wireless implementation communication is completed in the system configuration stage, so that the inter-equipment multicast can be ensured, and the initial discovery of the data distribution service is realized.
Based on the above embodiment, in this embodiment, step 200 determines, according to the topic type of the target device group, a quality of service rule corresponding to the target device group, including:
determining an initial service quality rule corresponding to the target equipment group at an application side according to the theme type of the target equipment group;
and generating a service quality rule corresponding to the target equipment group on the wireless network side through interface mapping provided by the data distribution service according to the initial service quality rule.
Specifically, a device group needing to perform data transmission is determined to be a target device group, at least one publishing device of the target device group respectively establishes a publishing relationship with the data distribution service, and at least one subscribing device respectively establishes a subscribing relationship with the data distribution service. According to the obtained theme type of the target equipment group, determining an initial service quality rule corresponding to the theme type at an application side in a communication process, transmitting the service quality rule to a 5G network control surface through an interface provided by a data distribution service, mapping the service quality rule to a corresponding QoS template by the control surface, generating the service quality rule corresponding to the target equipment group at a wireless network side, and realizing communication according to the service quality rule required by the theme type.
In the data transmission method based on the data distribution service provided by the embodiment, a set of functional interfaces with the 5G network control surface is added in the data distribution service, qoS requirements of application on data transmission are translated into bearing requirements of the 5G network on corresponding data, and therefore high-reliability end-to-end data transmission is achieved.
Based on the above embodiment, in this embodiment, after generating, according to the initial quality of service rule, a quality of service rule corresponding to the target device group on the wireless network side through the interface mapping provided by the data distribution service, the method further includes:
and matching a target scheduling strategy corresponding to the service quality rule according to the service quality rule corresponding to the target equipment group at the wireless network side.
It should be noted that, the QoS rules of different Topic may put different requirements on the scheduling policy and rules of the 5G network bearer data, for example, a loadlineqos (deadline service quality) and a latencybutqos (delay budget service quality), and the 5G network needs to complete the transmission and scheduling of the data as fast as possible; and the ReliableQoS (reliable quality of service) and the corresponding History layer number affect whether the 5G air interface adopts a reliable transmission mechanism, such as RLC AM mode.
Specifically, after the service quality rule corresponding to the wireless network side of the target equipment group is generated through the interface mapping provided by the data distribution service, the target scheduling policy corresponding to the service quality rule is matched. For example, for low latency rules, a scheduling policy, such as low Rank, low MCS, etc., may be correspondingly matched to low latency on the air interface.
According to the data transmission method based on the data distribution service, after the service quality rule corresponding to the wireless network side of the target equipment group is generated through the interface mapping provided by the data distribution service, the target scheduling policy corresponding to the service quality rule is matched, and the reliability and stability of the real-time communication flow are guaranteed.
Based on the above embodiment, in this embodiment, step 300 invokes a publishing interface and a subscribing interface corresponding to the data distribution service, and controls at least one publishing device and at least one subscribing device in the target device group to perform data transmission according to a quality of service rule corresponding to the target device group, including:
and calling a publishing interface and a subscribing interface corresponding to the data distribution service, and controlling at least one publishing device and at least one subscribing device in the target device group to perform data transmission according to the service quality rule corresponding to the target device group and the target scheduling policy corresponding to the service quality rule.
According to the data transmission method based on the data distribution service, after the service quality rule corresponding to the wireless network side of the target equipment group is generated through the interface mapping provided by the data distribution service, the target scheduling policy corresponding to the service quality rule is matched, the publishing interface and the subscribing interface corresponding to the data distribution service are called, and at least one publishing equipment and at least one subscribing equipment in the target equipment group are controlled to conduct data transmission according to the service quality rule corresponding to the target equipment group and the target scheduling policy corresponding to the service quality rule, so that the reliability and the stability of real-time communication flow are guaranteed.
Based on the above embodiment, in this embodiment, before invoking the publishing interface and the subscribing interface corresponding to the data distribution service in step 300, the method further includes:
based on PDP and EDP, mutual discovery of at least one publishing device and at least one subscribing device in each device group of the target virtual network group is realized through the data distribution service.
Specifically, after the device configuration is completed, before the devices start to communicate, the data distribution service performs the data distribution service PDP and the data distribution service EDP within the target virtual network group, and mutual discovery is completed between the devices.
Further, in the device communication process, a publishing interface and a subscribing interface corresponding to the data distribution service are called, and at least one publishing device and at least one subscribing device in the target device group are controlled to conduct data transmission according to the service quality rule corresponding to the target device group.
According to the data transmission method based on the data distribution service, the data distribution service performs data distribution service PDP and data distribution service EDP in the target virtual network group, mutual discovery among devices is completed, a publishing interface and a subscribing interface corresponding to the data distribution service are called, communication between at least one publishing device and at least one subscribing device in the device group is performed according to a service quality rule, and therefore end-to-end data efficient transmission is achieved.
Fig. 5 is a networking architecture diagram of a data transmission method based on a data distribution service according to an embodiment of the present invention, and fig. 6 is a complete flowchart of the data transmission method based on the data distribution service according to the embodiment of the present invention; with reference to fig. 5 and 6, a description will be given of a data transmission method based on a data distribution service provided by the present invention, with respect to a specific example:
as shown in fig. 5, for example, four 5G terminals are respectively connected to the field 5G network, the device 1 and the device 2 communicate in real time, and the device 3 and the monitoring device transmit video streams.
Based on the specifications of the data distribution service technology, examples define two topics, respectively:
(1) topic1: real-time coordinates of the device 1;
(2) topic2 video stream of device 3.
When the upper layer application invokes the data distribution service interface, a loadline QoS (Best Effort reliability quality of service) is set for the publish and subscribe of Topic1, respectively, with a loadline=20ms, and a Best effect QoS (Best Effort reliability quality of service) is selected for the publish and subscribe of Topic 2.
The specific implementation flow is as follows:
1. in a service management system of the scene, the communication demand information of the four 5G terminals is summarized to form a scene-level configuration file, the configuration file definitely carries out data distribution service communication on the equipment 1, the equipment 2, the equipment 3 and the monitoring equipment 4 terminals in the scene, the 4 equipment is configured into a target virtual network Group 5G-LAN VN Group, and multicast intercommunication is realized;
2. the management system identifies a DeadlineQoS rule in the service, adds a communication packet filtering rule between the equipment 1 and the equipment 2 into a 5G low-delay QoS template, and correspondingly matches a low-delay scheduling strategy, such as low Rank, low MCS and the like, on an air interface; the system adopts default bearer transmission for Best effect QoS;
3. After the equipment configuration is finished, before the equipment starts working, the data distribution service performs PDP and EDP in the target virtual network group, and mutual discovery among the equipment is finished;
4. and calling a publishing and subscribing API corresponding to the data distribution service according to the execution of the actual application, so as to realize communication. The communication is transmitted by the radio bearer corresponding to the appointed QoS rule in the 5G network, so that the reliability and stability of the real-time communication QoS flow are ensured.
According to the invention, different theme types are defined for each equipment group, when the equipment groups publish data and subscribe data, interfaces are provided through the data distribution service, corresponding service quality rules are obtained through the interfaces according to the theme types, the publishing interfaces and the subscribing interfaces corresponding to the data distribution service are called, and communication between at least one publishing equipment and at least one subscribing equipment in the equipment groups is carried out according to the service quality rules, so that end-to-end efficient data transmission is realized.
The data transmission device based on the data distribution service provided by the present invention will be described below, and the data transmission device based on the data distribution service described below and the data transmission method based on the data distribution service described above may be referred to correspondingly to each other.
Fig. 7 is a schematic structural diagram of a data transmission device based on a data distribution service provided in this embodiment, and as shown in fig. 7, the data transmission device based on a data distribution service provided in this embodiment is used in a service management system, where the service management system is loaded with the data distribution service;
the device comprises:
an obtaining module 701, configured to obtain a topic type of each device group in a plurality of device groups accessing to a target virtual network group; each equipment group comprises at least one publishing equipment and at least one subscribing equipment, wherein the at least one publishing equipment respectively establishes a publishing relationship with the data distribution service, and the at least one subscribing equipment respectively establishes a subscribing relationship with the data distribution service;
a determining module 702, configured to determine a target device group that needs to perform data transmission, and determine a quality of service rule corresponding to the target device group according to a topic type of the target device group; wherein, the service quality rule is obtained through an interface provided by the data distribution service;
and the communication module 703 is configured to invoke a publishing interface and a subscribing interface corresponding to the data distribution service, and control at least one publishing device and at least one subscribing device in the target device group to perform data transmission according to a service quality rule corresponding to the target device group.
The data transmission device based on the data distribution service is used for a business management system, and the business management system is loaded with the data distribution service; the method comprises the steps of obtaining a theme type of each device group in a plurality of device groups accessed to a target virtual network group, wherein each device group comprises at least one publishing device and at least one subscribing device, the at least one publishing device respectively establishes a publishing relationship with a data distribution service, the at least one subscribing device respectively establishes a subscribing relationship with the data distribution service, determining a target device group needing to conduct data transmission, determining a service quality rule corresponding to the target device group according to the theme type of the target device group, obtaining the service quality rule through an interface provided by the data distribution service, calling a publishing interface and a subscribing interface corresponding to the data distribution service, and controlling the at least one publishing device and the at least one subscribing device in the target device group to conduct data transmission according to the service quality rule corresponding to the target device group. According to the invention, different theme types are defined for each equipment group, when the equipment groups publish data and subscribe data, interfaces are provided through the data distribution service, corresponding service quality rules are obtained through the interfaces according to the theme types, the publishing interfaces and the subscribing interfaces corresponding to the data distribution service are called, and communication between at least one publishing equipment and at least one subscribing equipment in the equipment groups is carried out according to the service quality rules, so that end-to-end data efficient transmission is realized.
Based on the foregoing embodiment, in this embodiment, the apparatus further includes a generating module, specifically configured to:
before the theme type of each device group in a plurality of device groups accessed to a target virtual network group is acquired, acquiring communication requirement information of each device group in the plurality of device groups;
generating a scene-level configuration file according to the communication requirement information of each device group in the plurality of device groups; the scene-level configuration file is used for determining a plurality of equipment groups belonging to the same target virtual network group, and the scene-level configuration file contains the theme type of each equipment group in the plurality of equipment groups of the target virtual network group;
the acquiring module 701 is specifically configured to:
and acquiring the theme type of each device group in the plurality of device groups accessed to the target virtual network group according to the scene-level configuration file.
Based on the foregoing embodiment, in this embodiment, the determining module 702 is specifically configured to:
determining an initial service quality rule corresponding to the target equipment group at an application side according to the theme type of the target equipment group;
and generating a service quality rule corresponding to the target equipment group on the wireless network side through interface mapping provided by the data distribution service according to the initial service quality rule.
Based on the foregoing embodiment, in this embodiment, the apparatus further includes a matching module, specifically configured to:
after generating a service quality rule corresponding to the target equipment group on the wireless network side through interface mapping provided by the data distribution service according to the initial service quality rule, matching a target scheduling strategy corresponding to the service quality rule according to the service quality rule corresponding to the target equipment group on the wireless network side.
Based on the above embodiment, in this embodiment, the communication module 703 is specifically configured to:
and calling a publishing interface and a subscribing interface corresponding to the data distribution service, and controlling at least one publishing device and at least one subscribing device in the target device group to perform data transmission according to the service quality rule corresponding to the target device group and the target scheduling policy corresponding to the service quality rule.
Based on the foregoing embodiment, in this embodiment, the apparatus further includes a discovery module, specifically configured to:
based on PDP and EDP, mutual discovery of at least one publishing device and at least one subscribing device in each device group of the target virtual network group is realized through the data distribution service.
Fig. 8 illustrates a physical structure diagram of an electronic device, as shown in fig. 8, which may include: processor 810, communication interface (Communications Interface) 820, memory 830, and communication bus 840, wherein processor 810, communication interface 820, memory 830 accomplish communication with each other through communication bus 840. The processor 810 may invoke logic instructions in the memory 830 to perform a data transmission method based on a data distribution service for a traffic management system in which the data distribution service is loaded;
the method comprises the following steps:
obtaining a theme type of each device group in a plurality of device groups accessed to a target virtual network group; each equipment group comprises at least one publishing equipment and at least one subscribing equipment, wherein the at least one publishing equipment respectively establishes a publishing relationship with the data distribution service, and the at least one subscribing equipment respectively establishes a subscribing relationship with the data distribution service;
determining a target equipment group which needs to carry out data transmission, and determining a service quality rule corresponding to the target equipment group according to the theme type of the target equipment group; wherein, the service quality rule is obtained through an interface provided by the data distribution service;
And calling a publishing interface and a subscribing interface corresponding to the data distribution service, and controlling at least one publishing device and at least one subscribing device in the target device group to perform data transmission according to the service quality rule corresponding to the target device group.
Further, the logic instructions in the memory 830 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In another aspect, the present invention further provides a computer program product, where the computer program product includes a computer program, where the computer program can be stored on a non-transitory computer readable storage medium, and when the computer program is executed by a processor, the computer can execute a data transmission method based on a data distribution service provided by the above methods, and the data transmission method is used in a service management system, where the service management system is loaded with the data distribution service;
the method comprises the following steps:
obtaining a theme type of each device group in a plurality of device groups accessed to a target virtual network group; each equipment group comprises at least one publishing equipment and at least one subscribing equipment, wherein the at least one publishing equipment respectively establishes a publishing relationship with the data distribution service, and the at least one subscribing equipment respectively establishes a subscribing relationship with the data distribution service;
determining a target equipment group which needs to carry out data transmission, and determining a service quality rule corresponding to the target equipment group according to the theme type of the target equipment group; wherein, the service quality rule is obtained through an interface provided by the data distribution service;
and calling a publishing interface and a subscribing interface corresponding to the data distribution service, and controlling at least one publishing device and at least one subscribing device in the target device group to perform data transmission according to the service quality rule corresponding to the target device group.
In still another aspect, the present invention further provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, is implemented to perform the data transmission method based on a data distribution service provided by the above methods, for use in a business management system, where the business management system is loaded with the data distribution service;
the method comprises the following steps:
obtaining a theme type of each device group in a plurality of device groups accessed to a target virtual network group; each equipment group comprises at least one publishing equipment and at least one subscribing equipment, wherein the at least one publishing equipment respectively establishes a publishing relationship with the data distribution service, and the at least one subscribing equipment respectively establishes a subscribing relationship with the data distribution service;
determining a target equipment group which needs to carry out data transmission, and determining a service quality rule corresponding to the target equipment group according to the theme type of the target equipment group; wherein, the service quality rule is obtained through an interface provided by the data distribution service;
and calling a publishing interface and a subscribing interface corresponding to the data distribution service, and controlling at least one publishing device and at least one subscribing device in the target device group to perform data transmission according to the service quality rule corresponding to the target device group.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The data transmission method based on the data distribution service is characterized by being used for a business management system, wherein the business management system is loaded with the data distribution service;
the method comprises the following steps:
obtaining a theme type of each device group in a plurality of device groups accessed to a target virtual network group; each equipment group comprises at least one publishing equipment and at least one subscribing equipment, wherein the at least one publishing equipment respectively establishes a publishing relationship with the data distribution service, and the at least one subscribing equipment respectively establishes a subscribing relationship with the data distribution service;
determining a target equipment group which needs to carry out data transmission, and determining a service quality rule corresponding to the target equipment group according to the theme type of the target equipment group; wherein, the service quality rule is obtained through an interface provided by the data distribution service;
And calling a publishing interface and a subscribing interface corresponding to the data distribution service, and controlling at least one publishing device and at least one subscribing device in the target device group to perform data transmission according to the service quality rule corresponding to the target device group.
2. The data transmission method based on the data distribution service according to claim 1, wherein before acquiring the topic type of each of the plurality of device groups accessing the target virtual network group, the method further comprises:
acquiring communication demand information of each device group in the plurality of device groups;
generating a scene-level configuration file according to the communication requirement information of each device group in the plurality of device groups; the scene-level configuration file is used for determining a plurality of equipment groups belonging to the same target virtual network group, and the scene-level configuration file contains the theme type of each equipment group in the plurality of equipment groups of the target virtual network group;
the obtaining the theme type of each device group in the plurality of device groups accessed to the target virtual network group includes:
and acquiring the theme type of each device group in the plurality of device groups accessed to the target virtual network group according to the scene-level configuration file.
3. The data transmission method based on the data distribution service according to claim 1, wherein the determining, according to the topic type of the target device group, a quality of service rule corresponding to the target device group includes:
determining an initial service quality rule corresponding to the target equipment group at an application side according to the theme type of the target equipment group;
and generating a service quality rule corresponding to the target equipment group on the wireless network side through interface mapping provided by the data distribution service according to the initial service quality rule.
4. A data transmission method based on a data distribution service according to claim 3, wherein after generating a quality of service rule corresponding to the target device group on a wireless network side through an interface mapping provided by the data distribution service according to the initial quality of service rule, the method further comprises:
and matching a target scheduling strategy corresponding to the service quality rule according to the service quality rule corresponding to the target equipment group at the wireless network side.
5. The data transmission method based on the data distribution service according to claim 4, wherein the invoking the publishing interface and the subscribing interface corresponding to the data distribution service controls at least one publishing device and at least one subscribing device in the target device group to perform data transmission according to the quality of service rule corresponding to the target device group, and includes:
And calling a publishing interface and a subscribing interface corresponding to the data distribution service, and controlling at least one publishing device and at least one subscribing device in the target device group to perform data transmission according to the service quality rule corresponding to the target device group and the target scheduling policy corresponding to the service quality rule.
6. The data transmission method based on the data distribution service according to claim 1, wherein before invoking the publishing interface and the subscribing interface corresponding to the data distribution service, the method further comprises:
based on PDP and EDP, mutual discovery of at least one publishing device and at least one subscribing device in each device group of the target virtual network group is realized through the data distribution service.
7. The data transmission device based on the data distribution service is characterized by being used for a business management system, wherein the business management system is loaded with the data distribution service;
the device comprises:
the acquisition module is used for acquiring the theme type of each device group in the plurality of device groups accessed to the target virtual network group; each equipment group comprises at least one publishing equipment and at least one subscribing equipment, wherein the at least one publishing equipment respectively establishes a publishing relationship with the data distribution service, and the at least one subscribing equipment respectively establishes a subscribing relationship with the data distribution service;
The determining module is used for determining a target equipment group needing data transmission, and determining a service quality rule corresponding to the target equipment group according to the theme type of the target equipment group; wherein, the service quality rule is obtained through an interface provided by the data distribution service;
and the communication module is used for calling the publishing interface and the subscribing interface corresponding to the data distribution service and controlling at least one publishing device and at least one subscribing device in the target device group to perform data transmission according to the service quality rule corresponding to the target device group.
8. The data transmission device based on data distribution services according to claim 7, characterized in that said device further comprises a generation module, in particular for:
before the theme type of each device group in a plurality of device groups accessed to a target virtual network group is acquired, acquiring communication requirement information of each device group in the plurality of device groups;
generating a scene-level configuration file according to the communication requirement information of each device group in the plurality of device groups; the scene-level configuration file is used for determining a plurality of equipment groups belonging to the same target virtual network group, and the scene-level configuration file contains the theme type of each equipment group in the plurality of equipment groups of the target virtual network group;
The acquisition module is specifically configured to:
and acquiring the theme type of each device group in the plurality of device groups accessed to the target virtual network group according to the scene-level configuration file.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements a data transmission method based on a data distribution service according to any of claims 1 to 6 when executing the program.
10. A non-transitory computer readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor implements the data transmission method based on a data distribution service according to any of claims 1 to 6.
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