CN103338269B - A kind of data transmission method and device - Google Patents

Abstract

The present application provides a data transmission method and device, wherein the method includes: receiving a data transmission request including data network transmission requirements; obtaining a meta-capability list that meets the data network transmission requirements, and the meta-capabilities in the meta-capability list are those that meet data Based on the meta-capability list, determine the transmission path that meets the network transmission requirements of the data; combine the meta-capabilities that meet the network transmission requirements of the data on the nodes passed by the transmission path to obtain a combination chain; The identification is fed back to the source node that sent the data, so that the source node transmits the data through the combination chain corresponding to the identification. The data transmission method and device provided in this application can provide a customized combination chain according to the network transmission requirements of data, that is, a combination chain that matches different business needs can be dynamically constructed and operated, so it can support diversified businesses and meet the needs of different customer groups. The diverse needs of the network.

Description

A data transmission method and device

technical field

The present invention relates to the field of communication technology, in particular to a data transmission method and device.

Background technique

The Internet was built in the era of mainframes with a link rate of 56Kbps, and now it has gradually evolved into a complex large-scale infrastructure, which is as important as power grid systems and transportation systems. The explosive growth of the Internet benefits from its architecture, which is easy to add new links and nodes, and easy to expand new protocols, applications and edge devices. The Internet's evolution from an academic research network to a worldwide information and communication facility is also testing the scalability of its architecture and design principles. As the basic principle of the Internet system: the network only provides core communication services, and the end system provides rich expansion functions. This idea has been proved to be very adaptable for a period of time, because the expansion of services does not affect the structure of the core network.

However, the demands of different customer groups on the network are diverse, and the current architecture is difficult to meet these demands or requires complex processing to adapt. For example, scientific experiments require a high-performance network that supports the development and research of specific protocols; with the development of the mobile Internet, low-power mobile network devices or sensors only need simpler and special functions instead of implementing standard TCP/ IP protocol stack. Therefore, the current architecture is difficult to adapt to the differentiated requirements of existing applications on network performance and device capabilities. From the perspective of business requirements, with the continuous enrichment of IP network business forms, business requirements for the network are becoming more and more diverse and changeable, especially for new services such as p2p, VoIP, online games, video, etc. Conferences, social media, etc. continue to emerge, and the limited and static service capabilities of IP networks are becoming more and more inadequate. This directly leads to an ever-widening gap between business needs and inherent capabilities of the network, which will eventually make it difficult or even impossible for the network to support diverse business.

Therefore, after decades of development, although the Internet works well in completing basic communication tasks, it is an indisputable fact that it is difficult to adapt to the special needs of special users and the expansion of new services.

Contents of the invention

In view of this, the present invention provides a data transmission method and device to solve the problem that the Internet in the prior art is difficult to adapt to the special needs of special users and the expansion of new services. The technical solution is as follows:

In one aspect, a data transmission method is applied to a server, and the server stores meta-capability information, and the meta-capability is set on a network node for realizing end-to-end data communication, and the method includes:

receiving a data transmission request, where the data transmission request includes a network transmission requirement for the data;

Obtaining a list of meta-capabilities meeting the requirements for network transmission of the data, where the meta-capabilities in the list of meta-capabilities are meta-capabilities meeting the requirements for network transmission of the data;

determining a transmission path that satisfies the network transmission requirements of the data based on the meta-capability list;

Combining the meta-capabilities that meet the network transmission requirements of the data on the nodes passed by the transmission path to obtain a combination chain;

Feedback the identifier of the combined chain to the source node sending the data, so that the source node transmits the data through the combined chain corresponding to the identifier.

Wherein, obtaining a list of meta-capabilities that meet the network transmission requirements of the data includes:

Obtaining a meta-service list according to the network transmission requirements of the data, the meta-service list includes: meta-services that meet the network transmission requirements of the data, and each meta-service is realized by at least one meta-capability;

A meta-capability list corresponding to each meta-service is determined according to the correspondence between the meta-service and the meta-capability list, and the meta-capability list includes the meta-capability for implementing the meta-service corresponding to the meta-capability table.

Wherein, determining the transmission path that meets the network transmission requirements of the data based on the meta-capability list includes:

Acquiring the transmission path of the data;

For each transmission path, it is judged whether the nodes passed by the transmission path include all the meta-capabilities in the meta-capability list, and if yes, the transmission path is determined as a transmission path that meets the network transmission requirements of the data.

When there are multiple transmission paths that meet the network transmission requirements of the data, the meta-capabilities that meet the network transmission requirements of the data on the nodes passed by the transmission paths are combined to obtain a combination chain including:

Get the current network status;

determining an optimal transmission path from a plurality of transmission paths satisfying the network transmission requirements of the data according to the current network conditions and the network transmission requirements of the data;

Combining the meta-capabilities meeting the network transmission requirements of the data on the nodes passed by the optimal transmission path to obtain a combination chain.

The above method also includes:

receiving a combination chain adjustment request, the combination chain adjustment request is used to request to adjust the combination chain when the combination chain does not meet the network transmission requirements of the data or the network transmission requirements change, the combination chain adjustment request includes the Identification of combined chains and adjustment requirements for combined chains;

Adjusting the combination chain corresponding to the identifier in the combination chain adjustment request according to the adjustment requirements of the combination chain, adjusting the combination chain includes adjusting the parameters of the meta-capability in the combination chain, adding meta-capability to the combination chain, And/or, delete the meta-capability in the combination chain;

Feedback the identifier of the adjusted combination chain to the source node.

Wherein, the adjustment requirement of the combination chain is: guaranteed delay;

Adjusting the combination chain according to the adjustment requirements of the combination chain includes:

Obtain the data transmission status of the node where the meta-capability is located in the combination chain;

When the node where the meta-capability is located in the combined chain is congested and the delay cannot be guaranteed, the avoidance condition is added to re-determine the data transmission path;

The combination chain is adjusted according to the re-determined data transmission path.

In another aspect, a data transmission device is applied to a server, and the server stores meta-capability information, and the meta-capability is set on a network node for realizing end-to-end data communication, and the device includes:

a first receiving unit, configured to receive a data transmission request, where the data transmission request includes a network transmission requirement for the data;

An obtaining unit, configured to obtain a list of meta-capabilities meeting the network transmission requirements of the data, where the meta-capabilities in the list of meta-capabilities are meta-capabilities meeting the network transmission requirements of the data;

a determining unit, configured to determine a transmission path that satisfies the network transmission requirements of the data based on the meta-capability list;

a combination unit, configured to combine the meta-capabilities meeting the network transmission requirements of the data on the nodes passed by the transmission path to obtain a combination chain;

The first sending unit feeds back the identifier of the combined chain to the source node that sends the data, so that the source node transmits the data through the combined chain corresponding to the identifier.

Among them, the acquisition unit includes:

The first acquiring subunit is configured to acquire a meta-service list according to the network transmission requirements of the data, the meta-service list includes: meta-services meeting the network transmission requirements of the data, each meta-service is realized by at least one meta-capability ;

The first determination subunit is configured to determine a meta-capability list corresponding to each meta-service according to a correspondence relationship between a meta-service and a meta-capability list, and the meta-capability list includes meta-capabilities for implementing the meta-service corresponding to the meta-capability list.

Among them, the determination unit includes:

a second acquiring subunit, configured to acquire the transmission path of the data;

The second determining subunit is configured to, for each transmission path, determine the transmission path as a transmission that meets the network transmission requirements of the data when the nodes passed by the transmission path include all the meta-capabilities in the meta-capability list path.

When there are multiple transmission paths that meet the network transmission requirements of the data, the combination unit includes:

The third acquisition subunit is used to acquire the current network status;

A third determining subunit, configured to determine an optimal transmission path from a plurality of transmission paths satisfying the network transmission requirements of the data according to the current network conditions and the network transmission requirements of the data;

The combination subunit is configured to combine the meta-capabilities meeting the network transmission requirements of the data on the nodes passed by the optimal transmission path to obtain a combination chain.

The device also includes:

The second receiving unit is configured to receive a combination chain adjustment request, the combination chain adjustment request is used to request to adjust the combination chain when the combination chain does not meet the network transmission requirements of the data or the network transmission requirements change, the The combination chain adjustment request includes the identification of the combination chain and the adjustment requirements of the combination chain;

An adjustment unit, configured to adjust the combination chain corresponding to the identifier included in the combination chain adjustment request according to the adjustment requirements of the combination chain, the adjustment of the combination chain includes adjusting the parameters of the meta-capability of the combination chain, and the combination chain adding meta-capabilities to the chain, and/or deleting meta-capabilities in the combined chain;

The second sending unit is configured to feed back the identifier of the adjusted combination chain to the source node.

Wherein, the adjustment requirement of the combination chain is: guaranteed delay, and the adjustment unit includes:

The fourth acquisition subunit is used to acquire the data transmission status of the node where the meta-capability is located in the combined chain;

The fourth determination subunit is used to re-determine the data transmission path by adding avoidance conditions when the node where the meta-capability is located in the combined chain is congested and the delay cannot be guaranteed;

The adjustment subunit is configured to adjust the combination chain according to the re-determined data transmission path.

The above technical scheme has the following beneficial effects:

The present invention provides a data transmission method and device, wherein the server receives a transmission request including data network transmission requirements, obtains a meta-capability list that meets the data network transmission requirements, and determines a transmission path that meets the data network transmission requirements based on the meta-capability list, Combine the meta-capabilities that meet the network transmission requirements of the data on the nodes passed by the transmission path to obtain a combined chain; feed back the identification of the combined chain to the source node that sends the data, so that the source node transmits through the combined chain corresponding to the identification data. The data transmission method and device provided by the present invention can provide a customized combination chain according to the network transmission requirements of data, that is, it can dynamically build and run a combination chain matching different business requirements, so it can support diversified services and meet the needs of different customer groups. The diverse needs of the network.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

FIG. 1 is a schematic diagram of a division form of a network function combination provided by an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a meta-capability provided by an embodiment of the present invention;

FIG. 3 is a schematic flowchart of a data transmission method provided by an embodiment of the present invention;

FIG. 4 is a schematic flowchart of a video data transmission method provided by an embodiment of the present invention;

FIG. 5 is a schematic flowchart of another data transmission method provided by an embodiment of the present invention;

Fig. 6 is a schematic diagram of the meta-capability organization form provided by the embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a data transmission device provided by an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of another data transmission device provided by an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a specific example of a data transmission device provided by an embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

An embodiment of the present invention provides a division form of network function combination, which decomposes basic network functions into fine-grained function templates, and its implementation form is called meta-capability. Figure 1 shows a schematic diagram of the division form of network function combination .

Among them, the meta-capability is the minimum function to realize the basic network transfer capability, and it is the basis to support the expansion of network core functions and the customization of services. Generally speaking, the meta-capability is a "local network processing function" that supports end-to-end data communication semantics Or "network processing subfunction". Meta-service is a combination of meta-capabilities with functional associations, which is a larger-grained function with business characteristics. Business is an application with independent functions and effects that completes the needs of users, and the business is directly oriented to users. Meta-service is between business and meta-capability, and realizes the functional association mapping between business and meta-capability.

Please refer to Figure 2, which is a schematic diagram of the structure of the meta-capability. The meta-capability is a nine-tuple structure: S:=<T,I,O,ID,B,E,F,R,A>, that is, <type, input interface Set, output interface set, logo, executive body, event set, Facet classification, resource, attribute set>. in:

ID, which is the identity ID of the meta-capability.

The input interface set is a unified interface for invoking meta-capabilities or inputting information to meta-capabilities. The input interface set specifies message format, enabled parameters or attributes and other information.

The output interface set is a unified interface for the information output of the meta-capability. The information output format of the meta-capability belongs to the same semantic domain. Because the output of any meta-capability can be used as the input information of another meta-capability without processing.

Execution body is the logical processing unit of meta-capability. The executable occupies specific resources and performs specific functions according to the interface called by the meta-capability and the configured parameters.

The event set represents the internal events or external events that may be generated during the operation of the meta-capability, for example, configuration commands, network environment feedback, etc. The event set needs to be associated with the attribute set of the adjustment element capability. For example, when the user establishes a connection to send data, when a network congestion event occurs, the network device will adjust the transmission by returning explicit commands such as ECN identification or waiting for implicit feedback such as timeout of the sender. The peer reduces the sending rate in its attribute set.

The Facet classification tree is mainly an element that completes the sub-category of meta-capabilities. After years of accumulation, the core mechanism of the Internet has become quite complex, with various functions and obvious hierarchies. Therefore, in order to facilitate management and discovery, the classification of meta-capabilities as fine-grained network functional units is bound to have hierarchies. The Facet classification tree describes this hierarchy. The apex of the tree is the "type" identifier of the meta-capability, its sub-nodes identify the sub-categories, and the leaf nodes identify the "keywords" that describe the functional elements of the meta-capability. The keyword set should be defined through standardization.

Resources are mainly the node resource information that needs to be accessed during the running of the meta-capability instance. Node-specific resources are uniformly given by the node resource ontology description file to realize information interaction in a distributed network environment.

The attribute set mainly describes the non-functional parameters of the function, for example, the quality of service parameters that the meta-capability can provide. During the operation of the meta-capability, its internal logic can control the value range of the elements in the attribute set. The external environment can control the attribute parameters through the events in the event set in the form of commands and feedback.

Based on the above-mentioned division form of network function combination, this embodiment provides a data transmission method. FIG. 3 shows a schematic structural diagram of the method. This method can be applied to a server. Using the situation to form a meta-capability view, the method provided in this embodiment may include:

Step S101: Receive a data transmission request, wherein the data transmission request includes a network transmission requirement for data.

Step S102: Obtain a list of meta-capabilities meeting the network transmission requirements of the data, where the meta-capabilities in the meta-capability list are meta-capabilities meeting the network transmission requirements of the data.

Wherein, obtaining the list of meta-capabilities meeting the network transmission requirements of data may include: obtaining a list of meta-services according to the requirements of network transmission of data, the list of meta-services includes meta-services meeting the requirements of network transmission of data, and each meta-service consists of at least one meta-capability Realization: determine the meta-capability list corresponding to each meta-service according to the correspondence between the meta-service and the meta-capability list, and the meta-capability list includes the meta-capability to realize the meta-service corresponding to the meta-capability table.

Step S103: Determine the transmission path that meets the network transmission requirements of the data based on the meta-capability list.

Wherein, determining the transmission path that satisfies the network transmission requirements of data based on the meta-capability list may include: obtaining a data transmission path; for each transmission path, judging whether the nodes passed by the transmission path include all meta-capabilities in the meta-capability list, If yes, the transmission path is determined as a transmission path that satisfies the network transmission requirements of the data.

Step S104: Combine the meta-capabilities meeting the network transmission requirements of data on the nodes passed by the transmission path to obtain a combination chain.

It should be noted that, usually, there are multiple data transmission paths, and at some point, there may be multiple transmission paths that meet the network transmission requirements of data. In this case, the nodes that the transmission paths pass through satisfy the Combining the meta-capabilities required by the network transmission of data, the process of obtaining the combined chain may include: obtaining the current network status; determining the optimal transmission path from multiple transmission paths that meet the network transmission requirements of the data according to the current network status and the network transmission requirements of the data Transmission path: combine the meta-capabilities that meet the network transmission requirements of data on the nodes passed by the optimal transmission path to obtain a combination chain.

Step S105: Feedback the identifier of the combined chain to the source node sending the data, so that the source node transmits data through the combined chain corresponding to the identifier.

On the basis of the above embodiments of the present invention, a specific example is now given for description.

Taking video service transmission requirements as an example, Figure 4 shows a schematic diagram of the video data transmission process:

Step S201: The server receives the video data transmission request sent by the video application program. The video data transmission request includes network transmission requirements, and the network transmission requirements are: low delay, burst and no connection.

Step S202: According to the network transmission requirements, the server obtains a list of meta-services meeting the network transmission requirements through reasoning and deduction. For the source node sending video data and the destination node receiving video data, its meta-service list is: UDP data transmission channel meta-service, and for network nodes, its meta-service list is: routing, (high priority) storage, and forwarding.

The following example illustrates the process of obtaining a meta-service list that meets network transmission requirements through reasoning and deduction: Assume that the network performance level is divided into three levels: a, b, and c from low to high, and the network transmission requirements are: end-to-end delay is a level, If the packet loss rate is level c, it can be interpreted as the request is tolerant to network delay, but requires the lowest packet loss rate. At this time, it is necessary to support meta-capabilities such as error correction, window-based flow control, end-to-end transmission, and retransmission. , to guarantee the requested performance.

Step S203: Determine a meta-capability list corresponding to each meta-service in the meta-service list according to the relationship between the meta-service and the meta-capability list. For the source node sending video data and the destination node receiving video data: port-based demultiplexing, checksum, for network nodes: pathfinding, table lookup, priority queue, discarding, switching, scheduling, measurement, shaping.

Step S204: Based on the meta-capability list, determine a transmission path that meets the network transmission requirements of the video data, and the nodes passed by the transmission path should include all the meta-capabilities determined above that meet the video data requirements.

Step S205: Combine the meta-capabilities meeting the network transmission requirements of video data on the nodes passed by the transmission path to obtain a combination chain.

Step S206: Feedback the identification of the combination chain to the source node sending the video data, so that the source node sending the video data transmits the video data through the combination link corresponding to the identification.

An embodiment of the present invention provides a data transmission method. The server receives a transmission request including data network transmission requirements, obtains a meta-capability list that meets the data network transmission requirements, and determines a transmission path that meets the data network transmission requirements based on the meta-capability list. The meta-capabilities that meet the network transmission requirements of the data on the nodes passed by the transmission path are combined to obtain a combined chain; the identification of the combined chain is fed back to the source node that sends the data, so that the source node transmits data through the combined chain corresponding to the identification. The data transmission method provided by the embodiment of the present invention can provide a customized combination chain according to the network transmission requirements of data, that is, it can dynamically build and run a combination chain matching different business requirements, so it can support diversified services and meet the needs of different customer groups. The diverse needs of the network.

Please refer to Figure 5, which is a schematic flow chart of another data transmission method provided by an embodiment of the present invention, which can be applied to a server. It should be noted that, in order to better organize and utilize the The meta-capability manages the network partitions, and each partition has at least one server. Figure 6 shows the organizational form of the meta-capability. The server in this embodiment is a domain management server, and the domain management server is mainly responsible for collecting The meta-capability set and resource usage in each network node form a meta-capability view, and the method provided in this embodiment may include:

Step S301: Receive a data transmission request, wherein the data transmission request includes a network transmission requirement for data.

Step S302: Obtain a list of meta-capabilities meeting the network transmission requirements of the data, where the meta-capabilities in the meta-capability list are meta-capabilities meeting the network transmission requirements of the data.

Wherein, obtaining the list of meta-capabilities meeting the network transmission requirements of data may include: obtaining a list of meta-services according to the requirements of network transmission of data, the list of meta-services includes meta-services meeting the requirements of network transmission of data, and each meta-service consists of at least one meta-capability Realization: determine the meta-capability list corresponding to each meta-service according to the correspondence between the meta-service and the meta-capability list, and the meta-capability list includes the meta-capability to realize the meta-service corresponding to the meta-capability table.

Step S303: Determine the transmission path that meets the network transmission requirements of the data based on the meta-capability list.

Wherein, determining the transmission path that satisfies the network transmission requirements of data based on the meta-capability list may include: obtaining a data transmission path; for each transmission path, judging whether the nodes passed by the transmission path include all meta-capabilities in the meta-capability list, If yes, the transmission path is determined as a transmission path that satisfies the network transmission requirements of the data.

Step S304: Combine the meta-capabilities meeting the network transmission requirements of data on the nodes passed by the transmission path to obtain a combination chain.

It should be noted that, usually, there are multiple data transmission paths, and at some point, there may be multiple transmission paths that meet the network transmission requirements of data. In this case, the nodes that the transmission paths pass through satisfy the Combining the meta-capabilities required by the network transmission of data to obtain the combination chain may include: obtaining the current network status; determining the optimal transmission path from multiple transmission paths that meet the network transmission requirements of the data according to the current network status and the network transmission requirements of the data Transmission path: combining meta-capabilities that meet the network transmission requirements of the data on the nodes passed by the optimal transmission path to obtain a combination chain.

Step S305: Feedback the identifier of the combined chain to the source node sending the data, so that the source node transmits data through the combined chain corresponding to the identifier.

Step S306: Receive the combination chain adjustment request. The combination chain adjustment request is used to request to adjust the combination chain when the combination chain does not meet the data network transmission requirements or the data network transmission requirements change. The combination chain adjustment request includes the combination chain identification and combination chain adjustment requirements.

Step S307: Adjust the combination chain corresponding to the identifier included in the combination chain adjustment request according to the adjustment requirement of the combination chain, the adjustment of the combination chain includes adjusting the parameters of the meta-capability in the combination chain, adding meta-capability in the combination chain, and/or , to delete the meta-capability in the combination chain.

Step S308: Feedback the identifier of the adjusted combination chain to the source node, so that the source node continues to transmit data through the adjusted combination chain corresponding to the identifier.

Also take the video data of the video service in the above embodiment as an example to illustrate the process of combining chain adjustment:

When network congestion occurs at a certain node that the video data transmission path passes through, the video application program perceives that the data transmission delay increases. When it increases to a preset value, it sends a combination chain adjustment request to the server. The combination chain adjustment request includes combination Chain adjustment requirements, specifically: delay guarantee.

When the server receives the combination chain increase request, it obtains the data transmission status of the node where the meta-capability is located in the combination chain. When a node where the meta-capability is located in the combination chain is congested and the delay cannot be guaranteed, the avoidance condition is added to re-determine the data transmission path , adjust the combination chain according to the re-determined data transmission path. It should be noted that, if the conditional transmission path is satisfied, the combination chain adjustment fails, and the video data is still transmitted according to the original combination chain.

Also take the video business as an example: the adjustment of the combined chain usually adopts a business-driven method, and the service sends a combined chain adjustment request, specifically the adjustment signaling, which includes not only the identification of the combined chain, but also adjustment request information, and adjusts the combined chain. That is to change the composition and parameters of the combination chain corresponding to the identification according to the adjustment requirement information.

An embodiment of the present invention provides a data transmission method. The server receives a transmission request including data network transmission requirements, obtains a meta-capability list that meets the data network transmission requirements, and determines a transmission path that meets the data network transmission requirements based on the meta-capability list. The meta-capabilities that meet the network transmission requirements of the data on the nodes passed by the transmission path are combined to obtain a combined chain; the identification of the combined chain is fed back to the source node that sends the data, so that the source node transmits data through the combined chain corresponding to the identification. The data transmission method provided by the embodiment of the present invention can provide a customized combination chain according to the network transmission requirements of data, that is, it can dynamically build and run a combination chain matching different business requirements, so it can support diversified services and meet the needs of different customer groups. The diverse needs of the network. In addition, the data transmission method provided by the embodiment of the present invention can also dynamically adjust the combination chain according to the adjustment requirements of the combination chain when the combination chain does not meet the data transmission requirements, or when the network transmission requirements of the data change, so as to meet the data transmission requirements .

Please refer to FIG. 7 , which is a schematic structural diagram of a data transmission device provided by an embodiment of the present invention. The device can be applied to a server, and the server stores meta-capability information. The device can include: a first receiving unit 101, an acquiring unit 102 , a determining unit 103 , a combining unit 104 and a first sending unit 105 . in:

The first receiving unit 101 is configured to receive a data transmission request, wherein the data transmission request includes a network transmission requirement for data.

The obtaining unit 102 is configured to obtain a list of meta-capabilities meeting the network transmission requirements of data, where the meta-capabilities in the list of meta-capabilities are meta-capabilities meeting the requirements of network transmission of data.

The determining unit 103 is configured to determine a transmission path that satisfies network transmission requirements of data based on the meta-capability list.

The combination unit 104 is configured to combine the meta-capabilities meeting the network transmission requirements of data on the nodes passed by the transmission path to obtain a combination chain.

The first sending unit 105 feeds back the identifier of the combined chain to the source node sending the data, so that the source node transmits data through the combined chain corresponding to the identifier.

The data transmission device provided by the embodiment of the present invention can provide a customized combination chain according to the network transmission requirements of data, that is, it can dynamically build and run a combination chain matching different business requirements, so it can support diversified services and meet the needs of different customer groups. The diverse needs of the network.

Please refer to FIG. 8 , which is a schematic structural diagram of another data transmission device provided by an embodiment of the present invention. This device can be applied to a server, and the server stores meta-capability information. The device can include: a first receiving unit 101, an acquiring unit 102 . The determining unit 103 , the combining unit 104 , the first sending unit 105 , the second receiving unit 106 , the adjusting unit 107 and the second sending unit 108 . in:

The first receiving unit 101 is configured to receive a data transmission request, wherein the data transmission request includes a network transmission requirement for data.

The obtaining unit 102 is configured to obtain a list of meta-capabilities meeting the network transmission requirements of data, where the meta-capabilities in the list of meta-capabilities are meta-capabilities meeting the requirements of network transmission of data.

The determining unit 103 is configured to determine a transmission path that satisfies network transmission requirements of data based on the meta-capability list.

The combination unit 104 is configured to combine the meta-capabilities meeting the network transmission requirements of data on the nodes passed by the transmission path to obtain a combination chain.

The first sending unit 105 feeds back the identifier of the combined chain to the source node sending the data, so that the source node transmits data through the combined chain corresponding to the identifier.

The second receiving unit 106 is configured to receive a combined chain adjustment request. The combined chain adjustment request is used to request to adjust the combined chain when the combined chain does not meet the network transmission requirements of the data or the network transmission requirements of the data change. The combined chain adjustment request includes the combined chain The identification and adjustment requirements of the combination chain.

The adjustment unit 107 is configured to adjust the combination chain corresponding to the identifier included in the combination chain adjustment request according to the adjustment requirement of the combination chain, the adjustment of the combination chain includes adjusting the parameters of the meta-capability in the combination chain, adding the meta-capability in the combination chain, And/or, delete meta-capabilities in the composite chain.

The second sending unit 108 is configured to feed back the identifier of the adjusted combined chain to the source node.

The data transmission device provided by the embodiment of the present invention can provide a customized combination chain according to the network transmission requirements of data, that is, it can dynamically build and run a combination chain matching different business requirements, so it can support diversified services and meet the needs of different customer groups. The diverse needs of the network. In addition, the data transmission device provided by the embodiment of the present invention can also dynamically adjust the combination chain according to the adjustment requirements of the combination chain when the combination chain does not meet the network transmission requirements of data, or when the network transmission requirements of data change, so as to meet the requirements of data transmission. Require.

Further, the acquiring unit 102 in the foregoing embodiment may include: a first acquiring subunit and a first determining subunit. in:

The first acquiring subunit is configured to acquire a meta-service list according to network transmission requirements of data, wherein the meta-service list includes meta-services meeting data network transmission requirements, and each meta-service is realized by at least one meta-capability.

The first determination subunit is configured to determine a meta-capability list corresponding to each meta-service according to a correspondence relationship between a meta-service and a meta-capability list, and the meta-capability list includes meta-capabilities for implementing the meta-service corresponding to the meta-capability list.

Further, the determining unit 103 in the above embodiment includes: a second acquiring subunit and a second determining subunit. in:

The second obtaining subunit is used to obtain the transmission path of the data.

The second determining subunit is configured to, for each transmission path, determine the transmission path as a transmission path that satisfies the network transmission requirements of data when the nodes passed by the transmission path include all the meta-capabilities in the meta-capability list.

When there are multiple transmission paths that meet the network transmission requirements of data, the combining unit 104 in the above embodiment may include: a third obtaining subunit and a third determining subunit. in:

The third obtaining subunit is used to obtain the current network status.

The third determination subunit is configured to determine an optimal transmission path from multiple transmission paths that meet the network transmission requirements of data according to the current network conditions and the network transmission requirements of the data.

The combination sub-unit is used to combine the meta-capabilities meeting the network transmission requirements of data on the nodes passed by the optimal transmission path to obtain a combination chain.

When the adjustment requirement of the combination chain in the above embodiment is to guarantee the delay, the adjustment unit 107 may include: a fourth acquiring subunit and a fourth determining subunit. in:

The fourth obtaining subunit is used to obtain the data transmission status of the node where the meta-capability is located in the combination chain.

The fourth determining subunit is used to add avoidance conditions to re-determine the data transmission path when the node where the meta-capability is located in the combined chain is congested and the delay cannot be guaranteed.

The adjustment subunit is used for adjusting the combination chain according to the re-determined data transmission path.

On the basis of the foregoing embodiments, a specific example of the data transmission device is now given:

Please refer to FIG. 9 for a schematic structural diagram of the data transmission device, including: an adaptive application program, an adaptive reasoning engine, an adaptive combination engine, a combination chain manager, a metacapability library, a rule constraint library and a detector. in:

An adaptive application is an application implemented based on a meta-capability, which can send a node-identifiable data transmission request, and the data request includes network transmission requirements, which can be located in a network terminal.

The adaptive inference engine is used to deduce the meta-service list from the network transmission requirements in the data request according to the prior rules, and then deduce the meta-capability list from the meta-service list to realize intelligent processing, which is mainly implemented in the network nodes .

The adaptive combination engine screens out meta-capability instances from the candidate meta-capability set according to the meta-capability list, and completes combination optimization, which is mainly implemented in network nodes.

Combination chain manager, generally there are multiple combination chains in the network node, and the combination chain manager mainly realizes the management of combination chains.

The meta-capability library is mainly deployed on servers and network nodes. The meta-capability library in the server mainly stores the meta-capability instances notified by each network node in its management domain and the meta-capability distribution in adjacent domains. The meta-capability library in the network node mainly maintains the meta-capability in the node.

The rule constraint library, the rule constraint library is mainly deployed in the server, mainly for the adaptive reasoning engine and the adaptive combination engine to complete intelligent reasoning mapping and combination optimization.

The detector detects the network environment where the node is located. For the detector in the server, it mainly detects the load status, meta-capability distribution, and meta-capability update of each node in its domain. Network nodes mainly detect the load conditions around the network and receive packet messages. The node will make corresponding adjustment strategies according to the detection results. For example, if it finds that the network is congested, the node may adjust the combination chain and add the meta-capability that can complete the congestion control function.

The following is the process of the data transmission device in the above example constructing a combination chain and realizing data transmission:

Adaptive applications issue data transfer requests including network transfer requirements to the node's probes.

The detector filters the data transmission request and judges whether it is a control signaling. If it is a control signaling, it passes the network transmission request to the adaptive inference engine.

The adaptive inference engine analyzes and infers the corresponding rule set L (mainly including resource request parameters and parameter constraints, etc.), and connects to the rule base to determine whether there are new rules, and passes the request rule set L to the adaptive Combination engine.

The adaptive combination engine accesses the local meta-capability and rule base according to the rules, selects the appropriate meta-capability set A, then combines A with L, applies the combination algorithm according to the combination strategy, generates a combination chain C, and hands over the combination chain to the combination chain manager middle.

The combination chain manager stores the combination chain C in the combination chain list, and starts a timer to measure the life cycle of the combination chain. At the same time, the adaptive combination engine returns the handle of the combination chain C to the adaptive application program as a response.

The adaptive application sends a data message according to the returned C, and the data message is identified by the detector and forwarded to the combined chain manager.

The composite chain manager indexes the composite chain according to the composite chain handle C in the data message, opens the data channel, and forwards the data to the network.

For the convenience of description, when describing the above devices, functions are divided into various units and described separately. Of course, when implementing the present invention, the functions of each unit can be implemented in one or more pieces of software and/or hardware.

Each embodiment in this specification is described in a progressive manner, the same and similar parts of each embodiment can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, as for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for relevant parts, please refer to part of the description of the method embodiment. The system embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without creative effort.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A data transmission method, characterized in that it is applied to a server, and the server stores information of meta-capability, and the meta-capability is set on a network node for realizing end-to-end data communication, the method comprising: receiving a data transmission request, where the data transmission request includes a network transmission requirement for the data; Obtaining a list of meta-capabilities meeting the requirements for network transmission of the data, where the meta-capabilities in the list of meta-capabilities are meta-capabilities meeting the requirements for network transmission of the data; determining a transmission path that satisfies the network transmission requirements of the data based on the meta-capability list; Combining the meta-capabilities that meet the network transmission requirements of the data on the nodes passed by the transmission path to obtain a combination chain; feeding back the identifier of the combined chain to the source node sending the data, so that the source node transmits the data through the combined chain corresponding to the identifier; The acquisition of the list of meta-capabilities meeting the network transmission requirements of the data includes: Obtaining a meta-service list according to the network transmission requirements of the data, the meta-service list includes: meta-services that meet the network transmission requirements of the data, and each meta-service is realized by at least one meta-capability; A meta-capability list corresponding to each meta-service is determined according to the correspondence between the meta-service and the meta-capability list, and the meta-capability list includes the meta-capability for implementing the meta-service corresponding to the meta-capability list. 2. The method according to claim 1, wherein determining a transmission path that satisfies the network transmission requirements of the data based on the meta-capability list comprises: Acquiring the transmission path of the data; For each transmission path, it is judged whether the nodes passed by the transmission path include all the meta-capabilities in the meta-capability list, and if yes, the transmission path is determined as a transmission path that meets the network transmission requirements of the data. 3. The method according to claim 1, wherein, when there are multiple transmission paths that meet the network transmission requirements of the data, the nodes that meet the network transmission requirements of the data on the nodes that the transmission paths pass through are The meta-capabilities are combined to obtain a combination chain including: Get the current network status; determining an optimal transmission path from a plurality of transmission paths satisfying the network transmission requirements of the data according to the current network conditions and the network transmission requirements of the data; Combining the meta-capabilities meeting the network transmission requirements of the data on the nodes passed by the optimal transmission path to obtain a combination chain. 4. The method according to any one of claims 1-3, further comprising: receiving a combination chain adjustment request, the combination chain adjustment request is used to request to adjust the combination chain when the combination chain does not meet the network transmission requirements of the data or the network transmission requirements change, the combination chain adjustment request includes the Identification of combined chains and adjustment requirements for combined chains; Adjust the combination chain corresponding to the identifier included in the combination chain adjustment request according to the adjustment requirements of the combination chain, the adjustment of the combination chain includes adjusting the parameters of the element capabilities in the combination chain, and adding elements in the combination chain capabilities, and/or, delete meta-capabilities in said composite chain; Feedback the identifier of the adjusted combined chain to the source node. 5. The method according to claim 4, characterized in that, the adjustment requirement of the combination chain is: guaranteed delay; Adjusting the combination chain according to the adjustment requirements of the combination chain includes: Obtain the data transmission status of the node where the meta-capability is located in the combination chain; When the node where the meta-capability is located in the combined chain is congested and the delay cannot be guaranteed, the avoidance condition is added to re-determine the data transmission path; The combination chain is adjusted according to the re-determined data transmission path. 6. A data transmission device, characterized in that it is applied to a server, and the server stores meta-capability information, and the meta-capability is set on a network node for realizing end-to-end data communication, and the device includes: a first receiving unit, configured to receive a data transmission request, where the data transmission request includes a network transmission requirement for the data; An obtaining unit, configured to obtain a list of meta-capabilities meeting the network transmission requirements of the data, where the meta-capabilities in the list of meta-capabilities are meta-capabilities meeting the network transmission requirements of the data; a determining unit, configured to determine a transmission path that satisfies the network transmission requirements of the data based on the meta-capability list; a combination unit, configured to combine the meta-capabilities meeting the network transmission requirements of the data on the nodes passed by the transmission path to obtain a combination chain; The first sending unit feeds back the identifier of the combined chain to the source node that sends the data, so that the source node transmits the data through the combined chain corresponding to the identifier; The acquisition unit includes: The first acquiring subunit is configured to acquire a meta-service list according to the network transmission requirements of the data, the meta-service list includes: meta-services meeting the network transmission requirements of the data, each meta-service is realized by at least one meta-capability ; The first determination subunit is configured to determine a meta-capability list corresponding to each meta-service according to a correspondence relationship between a meta-service and a meta-capability list, and the meta-capability list includes meta-capabilities for implementing the meta-service corresponding to the meta-capability list. 7. The device according to claim 6, wherein the determining unit comprises: a second acquiring subunit, configured to acquire the transmission path of the data; The second determining subunit is configured to, for each transmission path, determine the transmission path as a transmission that meets the network transmission requirements of the data when the nodes passed by the transmission path include all the meta-capabilities in the meta-capability list path. 8. The device according to claim 6, wherein when there are multiple transmission paths satisfying the network transmission requirements of the data, the combining unit comprises: The third acquisition subunit is used to acquire the current network status; A third determining subunit, configured to determine an optimal transmission path from a plurality of transmission paths satisfying the network transmission requirements of the data according to the current network conditions and the network transmission requirements of the data; The combination subunit is configured to combine the meta-capabilities meeting the network transmission requirements of the data on the nodes passed by the optimal transmission path to obtain a combination chain. 9. The device according to any one of claims 6-8, further comprising: The second receiving unit is configured to receive a combination chain adjustment request, the combination chain adjustment request is used to request to adjust the combination chain when the combination chain does not meet the network transmission requirements of the data or the network transmission requirements change, the The combination chain adjustment request includes the identification of the combination chain and the adjustment requirements of the combination chain; An adjustment unit, configured to adjust the combination chain corresponding to the identifier included in the combination chain adjustment request according to the adjustment requirement of the combination chain, the adjustment of the combination chain includes adjusting the parameters of the meta-capability of the combination chain, in the Add meta-capabilities to the combination chain, and/or delete meta-capabilities in the combination chain; The second sending unit is configured to feed back the identifier of the adjusted combination chain to the source node. 10. The device according to claim 9, wherein the adjustment requirement of the combination chain is: guaranteed delay; The adjustment unit includes: The fourth acquisition subunit is used to acquire the data transmission status of the node where the meta-capability is located in the combined chain; The fourth determination subunit is used to re-determine the data transmission path by adding avoidance conditions when the node where the meta-capability is located in the combined chain is congested and the delay cannot be guaranteed; The adjustment subunit is configured to adjust the combination chain according to the re-determined data transmission path.