CN114765579A

CN114765579A - Data transmission method, device, related equipment and storage medium

Info

Publication number: CN114765579A
Application number: CN202110030143.7A
Authority: CN
Inventors: 陈少凡; 张晓儒
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2022-07-19

Abstract

The embodiment of the invention discloses a data transmission method, a data transmission device, related equipment and a storage medium. The method comprises the following steps: a Software Defined Network (SDN) controller receives an operation request from a network function virtualization management and orchestration (NFV MANO), and sends network configuration parameters to a forwarding device based on the operation request; acquiring a sending result of the network configuration parameter; and if the sending result shows that the network configuration parameter is abnormally sent, sending first information for representing the abnormal sending of the network configuration parameter to the NFV MANO.

Description

Data transmission method, data transmission device, related equipment and storage medium

Technical Field

The present invention relates to the field of Network Function Virtualization (NFV) technology, and in particular, to a data transmission method, an apparatus, a related device, and a storage medium.

Background

After Software Defined Network (SDN) technology is introduced into NFV, VNF deployment and management tend to be automated. The NFV Management and Orchestration (MANO) system may transfer relevant specification configuration parameters to an SDN Controller (SDN-C), and issue instructions by the SDN-C to relevant virtual devices, such as SDN gateways (SDN gateways), virtual switches (vSwich), and the like, to implement operation requirements such as instantiation, scaling, and the like of a Virtualized Network Function (VNF). In the SDN scenario, the MANO system defines the concept of Network Services (NS): an NS instance is a specific network service that includes one or more VNFs, and the network service instance has functionality cooperatively provided by the VNFs it includes. Due to the lack of network configuration operation and reporting mechanism of SDN-C, NFV orchestrators (NFVO) and Virtualization Infrastructure Managers (VIM) cannot know. Under the condition, when the configuration operation of the underlying network is not completed successfully, which causes the abnormal operation of the NS instance, the NFVO still displays that all the network configuration operations are completed successfully, which causes operation and maintenance confusion and fails to locate the abnormality.

Disclosure of Invention

In order to solve the existing technical problem, embodiments of the present invention provide a data transmission method, an apparatus, a related device, and a storage medium.

In order to achieve the above purpose, the technical solution of the embodiment of the present invention is implemented as follows:

in a first aspect, an embodiment of the present invention provides a data transmission method, where the method includes: the SDN controller receives an operation request from the NFV MANO and sends network configuration parameters to the forwarding equipment based on the operation request; acquiring a sending result of the network configuration parameter; and if the sending result shows that the network configuration parameter is sent abnormally, sending first information representing the abnormal sending of the network configuration parameter to the NFV MANO.

In the foregoing solution, the obtaining of the sending result of the network configuration parameter includes: the SDN controller receives a sending result sent by the forwarding equipment within a first preset time length; the sending result indicates that the network configuration parameter is sent successfully or the network configuration parameter is sent abnormally; or the SDN controller does not receive a sending result sent by the forwarding device within the first preset time length, and determines that the network configuration parameter is sent abnormally.

In the foregoing solution, the obtaining of the sending result of the network configuration parameter includes: the SDN controller monitors the state of the forwarding device and the sending result of the network configuration parameters.

In the foregoing solution, after the SDN controller receives an operation request from the NFV MANO, the method further includes: and the SDN controller sends an operation result representing that the operation request is successfully received to the NFV MANO.

In the foregoing solution, the method further includes: the SDN controller receives a first query request from the NFV MANO, queries a network configuration operation result of forwarding equipment based on the first query request, and sends the network configuration operation result to the NFV MANO.

In a second aspect, an embodiment of the present invention further provides a data transmission method, where the method includes: the VIM receives a first operation request sent by the NFVO and sends a second operation request to the SDN controller; the second operation request is used for sending network configuration parameters to the forwarding equipment; receiving first information sent by the SDN controller, wherein the first information represents that the network configuration parameters are sent abnormally, and sending information representing that the network configuration parameters are sent abnormally to the NFVO.

In the foregoing scheme, the receiving, by the VIM, a first operation request sent by the NFVO includes: the VIM receives a first operation request sent by the NFVO through a first enhanced interface; the first operation request at least comprises NS instance identification, VIM identification, VL operation type and VL operation identification.

In the above scheme, after the VIM receives the first operation request sent by the NFVO, the method further includes: and the VIM adds the NS instance identifier, the VL operation identifier and the VL sub-operation identifier to a first operation record table.

In the above solution, the first operation record table further includes a first flag bit, where the first flag bit indicates whether a sending result of the network configuration parameter is abnormal; after the receiving the first information sent by the SDN controller, the method further includes: and the VIM sets the first flag position in the first operation record table to be a first numerical value.

In the above scheme, the first operation record table further includes a second flag bit, where the second flag bit represents whether the operation request is successfully received; after the VIM receives the first operation request sent by the NFVO, the method further comprises: and the VIM records the second flag bit in the first operation record table as a second numerical value.

In the foregoing solution, the method further includes: the VIM receives an operation result sent by the SDN controller and indicating that the second operation request is successfully received, and sends the operation result to the NFVO through the first enhanced interface; the operation result comprises an NS instance identifier and a VL operation identifier.

In the above scheme, the sending, to the NFVO, the information that characterizes the sending abnormality of the network configuration parameter includes: the VIM sends information representing the abnormal sending of the network configuration parameters to the NFVO through the first newly added interface; the information includes an NS instance identification.

In the foregoing scheme, the sending, to the NFVO, information that characterizes the sending exception of the network configuration parameter includes: the VIM receives a second query request sent by the NFVO through a second newly added interface, queries the first operation record table based on the second query request, and determines that the network configuration parameter is sent abnormally based on the first zone bit in the first operation record table; and sending information representing the abnormal sending of the network configuration parameters to the NFVO through the second newly added interface.

In the above scheme, the method further comprises: the VIM receives an operation query request sent by the NFVO through a first enhanced interface and sends the operation query request to the SDN controller; the operation inquiry request at least comprises one of the following: NS instance identification and VL operation identification; and receiving a network configuration operation result sent by the SDN, and sending the network configuration operation result to the NFVO through a second newly added interface.

In the foregoing solution, the first enhanced interface includes one of the following interfaces: CreateBGPNeighbor interface, CreateExroutes interface, CreateVPCConnection interface, CreateTapService interface, CreateTapFlow interface; the VIM receives an extension field including NS instance identification in a message from the NFVO through the first enhanced interface; the extension field in the message sent by the VIM to the NFVO through the first enhanced interface includes the NS instance identification and a VL operation identification.

In a third aspect, an embodiment of the present invention further provides a data transmission method, where the method includes: the NFVO sends an operation request to the SDN controller through the VIM, wherein the operation request is used for sending network configuration parameters to the forwarding equipment; and under the condition that the network configuration parameters are abnormally sent, the NFVO acquires information representing the abnormal sending of the network configuration parameters through the VIM.

In the above scheme, the sending, by the NFVO, the operation request to the SDN controller through the VIM includes: the NFVO sends a first operation request to the VIM through a first enhanced interface of the VIM, wherein the first operation request at least comprises an NS instance identifier, a VIM identifier, a VL operation type and a VL operation identifier.

In the foregoing solution, the method further includes: and the NFVO adds the NS instance identifier, the VIM identifier, the VL operation type and the VL operation identifier to a second operation record table.

In the above scheme, after the NFVO sends an operation request to the SDN controller through the VIM, the method further includes: the NFVO receives an operation result sent by the VIM through a first enhanced interface of the VIM, wherein the operation result represents that the SDN controller successfully receives an operation request; the operation result comprises an NS instance identifier and a VL operation identifier.

In the above scheme, the NFVO obtaining, through the VIM, information characterizing the network configuration parameter sending exception, including: the NFVO receives information which is sent by the VIM and represents the abnormal sending of the network configuration parameters through a first newly-added interface of the VIM; the information includes an NS instance identification.

In the above scheme, the NFVO obtaining, through the VIM, information characterizing the network configuration parameter sending exception, including: the NFVO sends a second query request to the VIM through a second newly added interface of the VIM, wherein the second query request is used for querying whether the network configuration parameters are sent abnormally or not; and the NFVO receives the information which is sent by the VIM and represents the abnormal sending of the network configuration parameters through the second newly added interface.

In the above scheme, the method further comprises: the NFVO determines to query the operation condition related to the specific NS instance according to the information recorded by the second operation record table; sending, by a first enhanced interface of the VIM, an operation query request to the VIM, the operation query request including at least one of: NS instance identification and VL operation identification; and the NFVO receives a network configuration operation result sent by the VIM through a second newly added interface of the VIM.

In a fourth aspect, an embodiment of the present invention further provides a data transmission apparatus, where the apparatus includes: a first interface unit and a second interface unit; wherein the content of the first and second substances,

the first interface unit is used for receiving an operation request from the NFV MANO;

the second interface unit is used for sending network configuration parameters to the forwarding equipment based on the operation request; the network configuration module is also used for acquiring the sending result of the network configuration parameters;

the first interface unit is further configured to send, to the NFV MANO, first information that characterizes that the network configuration parameter is abnormal to be sent, if the sending result indicates that the network configuration parameter is abnormal to be sent.

In the above scheme, the second interface unit is configured to receive a sending result sent by the forwarding device within a first preset duration; the sending result indicates that the network configuration parameter is sent successfully or the network configuration parameter is sent abnormally; or, the transmission result sent by the forwarding device is not received within the first preset time length, and it is determined that the network configuration parameter is abnormally sent.

In the foregoing solution, the second interface unit is configured to monitor a state of the forwarding device and a transmission result of the network configuration parameter.

In the foregoing solution, the first interface unit is further configured to send, after receiving the operation request from the NFV MANO, an operation result indicating that the operation request has been successfully received to the NFV MANO.

In the foregoing solution, the first interface unit is further configured to receive a first query request from the NFV MANO;

the second interface unit is further configured to query a network configuration operation result of the forwarding device based on the first query request;

the first interface unit is further configured to send the network configuration operation result to the NFV MANO.

In a fifth aspect, an embodiment of the present invention further provides a data transmission apparatus, where the apparatus includes: a third interface unit and a fourth interface unit; wherein the content of the first and second substances,

the third interface unit is configured to receive a first operation request sent by the NFVO;

the fourth interface unit is configured to send a second operation request to the SDN controller; the second operation request is used for sending network configuration parameters to the forwarding equipment; the SDN controller is further used for receiving first information sent by the SDN controller, wherein the first information represents that the network configuration parameter is sent abnormally;

the third interface unit is further configured to send, to the NFVO, information representing that the network configuration parameter sending is abnormal.

In the foregoing solution, the third interface unit is configured to receive, through a first enhanced interface, a first operation request sent by the NFVO; the first operation request at least comprises a network service NS instance identifier, a VIM identifier, a VL operation type and a VL operation identifier.

In the foregoing solution, the apparatus further includes a first recording unit, configured to add the NS instance identifier, the VL operation identifier, and the VL sub-operation identifier to a first operation record table.

In the above scheme, the first operation record table further includes a first flag bit, where the first flag bit represents whether a transmission result of the network configuration parameter is abnormal;

the first recording unit is further configured to set the first flag bit in the first operation record table to a first value after the second receiving unit receives the first information sent by the SDN controller.

In the above scheme, the first operation record table further includes a second flag bit, where the second flag bit represents whether the operation request is successfully received;

the first recording unit is further configured to mark the second flag bit in the first operation record table as a second numerical value.

In the foregoing solution, the fourth interface unit is further configured to receive an operation result sent by the SDN controller and indicating that the second operation request has been successfully received; the operation result comprises an NS instance identifier and a VL operation identifier;

the third interface unit is further configured to send the operation result to the NFVO through the first enhanced interface.

In the foregoing solution, the third interface unit is configured to send, to the NFVO, information representing that the network configuration parameter is sent abnormally through the first newly added interface; the information includes an NS instance identification.

In the foregoing solution, the third interface unit is configured to receive, through a second newly added interface, a second query request sent by the NFVO;

the first recording unit is further configured to query the first operation record table based on the second query request, and determine that the network configuration parameter is sent abnormally based on the first flag bit in the first operation record table;

and the third interface unit is further configured to send, to the NFVO, information representing that the network configuration parameter sending is abnormal through the second newly added interface.

In the foregoing solution, the third interface unit is further configured to receive, through a first enhanced interface, an operation query request sent by the NFVO; the operation inquiry request at least comprises one of the following: NS instance identification and VL operation identification;

the fourth interface unit is further configured to send the operation query request to the SDN controller; the SDN is further used for receiving a network configuration operation result sent by the SDN;

the third interface unit is further configured to send the network configuration operation result to the NFVO through a second newly added interface.

In the foregoing solution, the first enhanced interface includes one of the following interfaces: CreateBGPNeighbor interface, CreateExroutes interface, CreateVPCConnection interface, CreateTapService interface and CreateTapFlaw interface;

the third interface unit receives an extension field including an NS instance identifier in a message from the NFVO through the first enhanced interface;

the extension field in the message sent by the third interface unit to the NFVO through the first enhanced interface includes the NS instance identifier and the VL operation identifier.

In a sixth aspect, an embodiment of the present invention further provides a data transmission apparatus, where the apparatus includes: a first transmitting unit and a first receiving unit; wherein the content of the first and second substances,

the first sending unit is configured to send, through the VIM, an operation request to the SDN controller, where the operation request is used to send network configuration parameters to a forwarding device;

the first receiving unit is configured to, under the condition that the network configuration parameter is abnormal in sending, obtain, by the VIM, information representing that the network configuration parameter is abnormal in sending.

In the foregoing solution, the first sending unit is configured to send a first operation request to the VIM through a first enhanced interface of the VIM, where the first operation request includes at least a network service NS instance identifier, a VIM identifier, a VL operation type, and a VL operation identifier.

In the foregoing solution, the apparatus further includes a second recording unit, configured to add the NS instance identifier, the VIM identifier, the VL operation type, and the VL operation identifier to a second operation record table.

In the above scheme, the first receiving unit is further configured to receive, through a first enhanced interface of the VIM, an operation result sent by the VIM after the VIM sends an operation request to an SDN controller, where the operation result indicates that the SDN controller has successfully received the operation request; the operation result comprises an NS instance identifier and a VL operation identifier.

In the above solution, the first receiving unit is configured to receive, through a first newly added interface of the VIM, information that is sent by the VIM and that characterizes sending abnormality of the network configuration parameter; the information includes an NS instance identification.

In the foregoing solution, the first sending unit is configured to send a second query request to the VIM through a second newly added interface of the VIM, where the second query request is used to query whether the network configuration parameter is sent abnormally;

the first receiving unit is configured to receive, through the second newly added interface, information that is sent by the VIM and that represents that the sending of the network configuration parameter is abnormal.

In the above solution, the second recording unit is further configured to determine, according to information recorded in the second operation record table, an operation condition related to querying of a specific NS instance;

the first sending unit is further configured to send, to the VIM through a first enhanced interface of the VIM, an operation query request, where the operation query request includes at least one of: NS instance identification and VL operation identification;

the first receiving unit is further configured to receive, through the second newly added interface of the VIM, a network configuration operation result sent by the VIM.

In a seventh aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method according to the foregoing first aspect, second aspect, or third aspect of the embodiment of the present invention.

In an eighth aspect, an embodiment of the present invention further provides a communication device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the computer program to implement the steps of the method in the foregoing first aspect, second aspect, or third aspect of the embodiment of the present invention.

The data transmission method, the device, the related equipment and the storage medium provided by the embodiment of the invention comprise the following steps: the SDN controller receives an operation request from the NFV MANO and sends network configuration parameters to the forwarding equipment based on the operation request; acquiring a sending result of the network configuration parameter; and if the sending result shows that the network configuration parameter is abnormally sent, sending first information for representing the abnormal sending of the network configuration parameter to the NFV MANO. Therefore, the SDN controller reports the sending result of the network configuration parameters, and the SDN controller is consistent with the MANO data.

Drawings

Fig. 1 is a schematic structural diagram of a core network cloud platform system;

figure 2 is a schematic diagram of an example of an SDN based NFV architecture network service;

fig. 3 is a first flowchart illustrating a data transmission method according to an embodiment of the present invention;

fig. 4 is a second flowchart illustrating a data transmission method according to an embodiment of the present invention;

fig. 5 is a third schematic flowchart of a data transmission method according to an embodiment of the present invention;

fig. 6 is a schematic diagram illustrating parameter association management in an operation record table in a data transmission method according to an embodiment of the present invention;

fig. 7 is a first schematic application flow chart of a data transmission method according to an embodiment of the present invention;

fig. 8 is a schematic application flow chart of a data transmission method according to an embodiment of the present invention;

fig. 9 is a schematic application flow diagram of a data transmission method according to an embodiment of the present invention;

fig. 10 is a schematic application flow chart of a data transmission method according to an embodiment of the present invention;

fig. 11 is a first schematic structural diagram of a data transmission device according to an embodiment of the present invention;

FIG. 12 is a second block diagram of a data transmission apparatus according to an embodiment of the present invention;

fig. 13 is a third schematic structural diagram of a data transmission device according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a data transmission device according to a fourth embodiment of the present invention;

fig. 15 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention;

fig. 16 is a schematic diagram of a hardware component structure of a communication device according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Before describing the data transmission scheme of the embodiment of the present invention in detail, a brief description will be given to the related scheme.

Traditional network equipment manufacturers are customized based on specific specification equipment and specific technical requirements, the maintenance and updating processes of the equipment are complex, and the operation cost of service popularization is high. In order to reduce the complexity and cost of network deployment and service popularization, the cost brought by equipment upgrading can be effectively reduced and the deployment of new services is accelerated by a mode of realizing software and hardware decoupling based on a general hardware platform. NFV is proposed based on the above background. The NFV implements a management function of the core cloud by a MANO system and a network management system (e.g., an Operation Support Systems (OSS)). The core cloud platform system architecture is shown in fig. 1.

The MANO system is proposed by ETSI and includes three major components, namely, NFVO, Virtual Network Function Manager (VNFM), and VIM, and the major functions include life cycle management of Network elements, creation of images required by the Network elements, management of templates and software required by the Network elements, allocation and management of Network resources, and the like. Wherein:

NFVO: the method is responsible for unified scheduling of resources, establishing an automatic VNF capacity expansion and reduction strategy, providing specification configuration parameters of the instantiated VNF and the like;

VNFM: the VNF management module is responsible for VNF lifecycle management, such as parsing and processing of a Virtualized Network Function Descriptor (VNFD), initialization of a VNF instance, and scaling of the VNF;

VIM: and the system is responsible for scheduling and managing hardware resources and virtualized resources.

After the introduction of SDN technology by NFV, VNF deployment and management tend to be automated. The MANO system can transmit the relevant specification configuration parameters to the SDN-C, and the SDN-C issues instructions to the relevant virtual equipment to realize operation requirements such as instantiation and capacity expansion of the VNF.

In the SDN scenario, the MANO system defines the concept of NS, and as shown in fig. 2, an NS instance is a specific network service that includes one or more VNFs, and the functions of the NS instance are cooperatively provided by the VNFs included in the NS instance.

In an SDN-based NFV (network virtualization) framework, a MANO completes creation and deletion of related network configuration on a bottom forwarding device through an SDN-C (software defined network-client), and the whole process is as follows:

1) NFVO calls VIM northbound interface.

2) And the VIM calls an SDN-C northbound interface through an SDN-C plug-in.

3) The SDN-C issues the relevant flow table information to the underlying data communication device (e.g., the networking device in fig. 1).

4) And the bottom layer data communication equipment acquires the flow table and completes the related configuration.

However, in the related art scheme, after the NFVO issues the related network configuration request to the VIM:

1) the VIM analyzes the request operation, a Neutron component of the VIM calls an SDN-C plug-in/SDN-C driver (driver), and the SDN-C plug-in/SDN-C driver calls an SDN-C northbound interface to complete the distribution or deletion of the configuration;

2) when the SDN-C successfully obtains the operation request of the VIM through the northbound interface, a successful response is returned immediately to inform the VIM;

3) and after receiving the successful response, the VIM returns the successful response to the NFVO.

At this time, the NFVO considers that the relevant network configuration operation is successfully completed and issued through the SDN-C, however, whether the SDN-C actually successfully completes the creation of the network configuration through the southbound interface or not, and because the SDN-C lacks a reporting mechanism for the network configuration operation, the NFVO and the VIM cannot know. Under the condition, when the configuration operation of the underlying network is not completed successfully, which causes the abnormal operation of the NS instance, the NFVO still displays that all the network configuration operations are completed successfully, which causes operation and maintenance confusion and fails to locate the abnormality.

Based on this, the following examples of the present invention are proposed.

The embodiment of the invention provides a data transmission method. Fig. 3 is a first flowchart illustrating a data transmission method according to an embodiment of the present invention; as shown in fig. 3, the method includes:

step 101: the SDN controller receives an operation request from the NFV MANO and sends network configuration parameters to forwarding equipment based on the operation request;

step 102: acquiring a sending result of the network configuration parameter;

step 103: and if the sending result shows that the network configuration parameter is abnormally sent, sending first information for representing the abnormal sending of the network configuration parameter to the NFV MANO.

In the embodiment, an SDN controller (SDN-C) receives an operation request of an NFV MANO, specifically, an NFVO calls a VIM northbound interface, and issues a related network configuration operation request; the VIM receives the network configuration operation request, and sends an operation request to an SDN controller (SDN-C), where the operation request may also be referred to as a network configuration operation request, and is used to issue relevant network configuration parameters to the forwarding device.

In a related technical scheme, after receiving an operation request, the SDN controller sends a network configuration parameter to the forwarding device, and if the network configuration parameter is successfully issued, the SDN controller does not inform the NFV MANO, that is, does not inform the VIM. In this embodiment, after obtaining a sending result of a network configuration parameter, if the sending result indicates that the network configuration parameter is sent abnormally, the SDN controller sends first information representing that the network configuration parameter is sent abnormally to the MANO.

As an embodiment, the obtaining the sending result of the network configuration parameter includes: the SDN controller receives a sending result sent by the forwarding equipment within a first preset time length; the sending result indicates that the network configuration parameter is sent successfully or the network configuration parameter is sent abnormally; or the SDN controller does not receive a sending result sent by the forwarding device within the first preset time length, and determines that the network configuration parameter is sent abnormally.

The embodiment is suitable for the situation that the northbound interface and the southbound interface of the SDN controller are synchronous interfaces. The synchronous interface means that after a request is sent out, the corresponding result is waited for and then subsequent operation is carried out. For example, in this embodiment, an timeout duration (i.e., a first preset duration) is set for sending the network configuration parameter to the forwarding device through the southbound interface, and when the network configuration parameter is sent to the forwarding device, a timer is started, where the timing duration of the timer is the first preset duration; if the confirmation response corresponding to the network configuration parameter fed back by the forwarding equipment is received within the timing duration of the timer, the success in sending the network configuration parameter can be indicated, and a sending result of the success in sending the network configuration parameter is obtained; if a failure response corresponding to the network configuration parameter fed back by the forwarding device is received within the timing duration of the timer, or a response corresponding to the network configuration parameter fed back by the forwarding device is not received within the timing duration of the timer, it can be shown that the network configuration parameter fails to be sent, and a sending result that the network configuration parameter is abnormally sent is obtained.

As another embodiment, the obtaining the sending result of the network configuration parameter includes: the SDN controller monitors the state of the forwarding device and the sending result of the network configuration parameters.

The embodiment is suitable for the case that the northbound interface and the southbound interface of the SDN controller are asynchronous interfaces. The asynchronous interface means that after a request is sent out or after the request is received, feedback is successfully received, but whether the network configuration parameters are successfully sent down is not fed back. Therefore, in some optional embodiments, after the SDN controller receives the operation request from the NFV MANO, the method further comprises: and the SDN controller sends an operation result representing that the operation request is successfully received to the NFV MANO.

In this embodiment, the SDN controller monitors the state of the forwarding device and the sending result of the network configuration parameter, so as to obtain whether the sending of the network configuration parameter is abnormal or not and obtain the sending result of the network configuration parameter sending abnormality.

In some optional embodiments of the invention, the method further comprises: the SDN controller receives a first query request from the NFV MANO, queries a network configuration operation result of forwarding equipment based on the first query request, and sends the network configuration operation result to the NFV MANO.

In this embodiment, the NFVO in the NFV MANO may query, based on the operation record information, a network connection profile parameter configuration operation condition related to a specific NS instance, that is, send a first query request; the VIM receives the first query request and transmits the first query request to the SDN controller; and the SDN controller inquires a network configuration operation result of forwarding equipment based on the first inquiry request and sends the network configuration operation result to the NFV MANO.

Based on the foregoing embodiment, an embodiment of the present invention further provides a data transmission method. Fig. 4 is a second flowchart illustrating a data transmission method according to an embodiment of the present invention; as shown in fig. 4, the method includes:

step 201: the VIM receives a first operation request sent by the NFVO and sends a second operation request to the SDN controller; the second operation request is used for sending network configuration parameters to the forwarding equipment;

step 202: receiving first information sent by the SDN controller, wherein the first information represents that the network configuration parameters are sent abnormally, and sending information representing that the network configuration parameters are sent abnormally to the NFVO.

In this embodiment, NFVO calls the VIM northbound interface, and issues a related network configuration operation request, which is also the first operation request; the VIM receives the network configuration operation request, and sends an operation request to an SDN controller (SDN-C), where the operation request may also be referred to as a network configuration operation request, that is, a second operation request, and is used to issue related network configuration parameters to the forwarding device.

In a related technical scheme, after receiving an operation request, the SDN controller sends a network configuration parameter to the forwarding device, and if the network configuration parameter is successfully issued, the SDN controller does not inform the VIM. In this embodiment, when the network configuration parameter is abnormally sent, the VIM receives first information, which is sent by the SDN controller and characterizes the network configuration parameter is abnormally sent, and sends the information, which is characterized by the network configuration parameter is abnormally sent, to the NFVO, so that the NFVO and the VIM can timely know that the network configuration operation is not successfully completed.

In some optional embodiments of the invention, the VIM receives a first operation request sent from the NFVO, including: the VIM receives a first operation request sent by the NFVO through a first enhanced interface; the first operation request at least comprises NS instance identification, VIM identification, VL operation type and VL operation identification. In other words, the VIM receives a first operation request sent by the NFVO through a first enhanced interface message; and carrying the NS instance identification through an extension field in the first enhanced interface message. Where VL represents a virtual connection between VNFs.

In this embodiment, the first enhanced interface represents further enhancement or extension of the original interface, and data or information that needs to be additionally carried in this embodiment is carried by the newly defined or extended variable on the basis of the variable defined by the original interface. In other words, the first enhanced interface message is a further enhancement or extension of the original interface message, and data or information that needs to be additionally carried in this embodiment is carried by the extension field of the original message.

Illustratively, the first enhanced interface is a VIM northbound enhanced interface. The VIM northbound enhanced interface is a further enhancement on the basis of the VIM northbound interface. As shown in connection with fig. 1, the VIM northbound interface refers to the Or-Vi interface of VIM northbound, communicating with NFVO.

In some optional embodiments, the method further comprises: the VIM receives an operation result sent by the SDN controller and indicating that the second operation request is successfully received, and sends the operation result to the NFVO through the first enhanced interface; the operation result comprises an NS instance identifier and a VL operation identifier.

Illustratively, the first enhanced interface includes one of the following: CreateBGPNeighbor interface, CreateExroutes interface, CreateVPCConnection interface, CreateTapService interface and CreateTapFlaw interface; the VIM receives an extension field including NS instance identification in a message from the NFVO through the first enhanced interface; the extension field in the message sent by the VIM to the NFVO through the first enhanced interface includes the NS instance identification and a VL operation identification.

In this embodiment, the content carried by the extension field of the message in different directions is different for the first enhanced interface. The following description is made in connection with different interfaces.

1. VIM northbound enhanced interface: the createbpneighbor interface is shown in table 1 below, where the bold part is the added content, i.e., the extension part, in the embodiment of the present invention.

TABLE 1

2. VIM northbound enhanced interface: the createexroutues interface is shown in table 2 below, in which the bold portion is the added content, i.e., the extension portion, in the embodiment of the present invention.

TABLE 2

3. VIM northbound enhanced interface: the createppconnection interface is shown in table 3 below, in which the bold part is the added content, i.e., the extension part, in the embodiment of the present invention.

TABLE 3

4. VIM northbound enhanced interface: the CreateTapService interface is shown in table 4 below, where the bold part is the added content, i.e., the extension part, in the embodiment of the present invention.

TABLE 4

5. VIM northbound enhanced interface: the CreateTapFlow interface is shown in table 5 below, where the bold part is added to the embodiment of the present invention, that is, the extension part.

TABLE 5

Specifically, in the above example of the fifth first enhanced interface, it can be understood that, in a message sent by the NFVO received by the VIM, an NS Instance identifier (NS Instance ID) is carried by an extension field; in a message sent by the VIM to the NFVO, an operation identifier (OperationID) and an NS Instance identifier (NS Instance ID) are carried by an extension field.

In this embodiment, after receiving first information, sent by an SDN controller, representing that a network configuration parameter is sent abnormally, the VIM may send information, representing that the network configuration parameter is sent abnormally, to the NFVO in the following manner:

as an embodiment, the sending, to the NFVO, the information characterizing the network configuration parameter sending exception includes: the VIM sends information representing the abnormal sending of the network configuration parameters to the NFVO through the first newly-added interface; the information includes an NS instance identification.

As another embodiment, the sending, to the NFVO, information characterizing the network configuration parameter sending exception includes: the VIM receives a second query request sent by the NFVO through a second newly added interface, queries the first operation record table based on the second query request, and determines that the network configuration parameter is sent abnormally based on the first zone bit in the first operation record table; and sending information representing the abnormal sending of the network configuration parameters to the NFVO through the second newly added interface.

The first way is that the VIM actively sends the information of the abnormal network configuration parameter sending to the NFVO. The second way is that NFVO queries VIM to obtain whether the network configuration parameters send an exception.

Illustratively, the first added interface may be, for example, a FailedOperationDetail interface, and an extension field in a message sent by the VIM to the NFVO through the first added interface includes an NS instance identifier, as shown in table 6 below.

TABLE 6

For example, the second new interface may be, for example, a QueryOperationDetail interface, and an extension field in a message sent by the VIM to the NFVO through the second new interface includes a VL operation result; the VIM receives, through the second newly added interface, that the extension field in the message sent by the NFVO includes an NS instance identifier, as shown in table 7 below.

TABLE 7

In some optional embodiments of the invention, after the VIM receives the first operation request sent from the NFVO, the method further comprises: and the VIM adds the NS instance identifier, the VL operation identifier and the VL sub-operation identifier to a first operation record table.

In some optional embodiments, the first operation record table further includes a first flag bit, where the first flag bit indicates whether a transmission result of the network configuration parameter is abnormal; after receiving the sending result of the network configuration parameter sent by the SDN controller, the method further includes: and the VIM sets the first flag position in the first operation record table to be a first numerical value.

For example, if the first flag is 0, it may indicate that the network configuration parameter is successfully sent; if the first flag position is 1, it may indicate that the network configuration parameter is abnormal.

In some optional embodiments, the first operation record table further includes a second flag bit, where the second flag bit indicates whether the operation request is successfully received; after the VIM receives the first operation request sent by the NFVO, the method further comprises: and the VIM records the second flag bit in the first operation record table as a second numerical value.

For example, if the second flag is 0, it may indicate that the VIM has not successfully received the operation request of the NFVO; if the second flag is 1, it may indicate that the VIM successfully receives the operation request of the NFVO. The first operation record table can be specifically referred to as table 8, where in table 8, the abnormal flag bit is the first flag bit in this embodiment; the flag bit of the operation request, i.e., the second flag bit in this embodiment, is successfully received.

TABLE 8

In some optional embodiments of the invention, the method further comprises: the VIM receives an operation query request sent by the NFVO through a first enhanced interface, and sends the operation query request to the SDN controller based on the operation query request; the operation inquiry request at least comprises one of the following: NS instance identification and VL operation identification; and receiving a network configuration operation result sent by the SDN, and sending the network configuration operation result to the NFVO through a second newly added interface.

Based on the above embodiment, the embodiment of the present invention further provides a data transmission method. Fig. 5 is a third schematic flowchart of a data transmission method according to an embodiment of the present invention; as shown in fig. 5, the method includes:

step 301: the NFVO sends an operation request to the SDN controller through the VIM, wherein the operation request is used for sending network configuration parameters to the forwarding equipment;

step 302: and under the condition that the network configuration parameters are abnormally sent, the NFVO acquires information representing the abnormal sending of the network configuration parameters through the VIM.

The NFVO sends an operation request to an SDN controller through VIM, and the operation request comprises the following steps: the NFVO sends a first operation request to the VIM through a first enhanced interface of the VIM, wherein the first operation request at least comprises an NS instance identifier, a VIM identifier, a VL operation type and a VL operation identifier.

In this embodiment, the NFVO invokes the VIM northbound interface, and issues a relevant network configuration operation request, which is also the first operation request; the VIM receives the network configuration operation request, and sends an operation request to an SDN controller (SDN-C), where the operation request may also be referred to as a network configuration operation request, that is, a second operation request, and is used to issue related network configuration parameters to the forwarding device.

In the related technical scheme, after receiving the operation request, the SDN controller sends the network configuration parameters to the forwarding device, and if the network configuration parameters are successfully issued, the SDN controller does not notify the VIM. In this embodiment, in the case that the network configuration parameter is abnormally sent, the VIM receives first information, which is sent by the SDN controller and represents that the network configuration parameter is abnormally sent, and sends information, which represents that the network configuration parameter is abnormally sent, to the NFVO, so that the NFVO and the VIM can timely know that the network configuration operation is not successfully completed.

In some optional embodiments of the invention, the method further comprises: the NFVO adds the NS instance identifier, the VIM identifier, the VL operation type, and the VL operation identifier to a second operation record table. The second operation log table may be referred to the following table 9, for example.

TABLE 9

In some optional embodiments of the invention, after the NFVO sends an operation request to an SDN controller through the VIM, the method further comprises: the NFVO receives an operation result sent by the VIM through a first enhanced interface of the VIM, wherein the operation result represents that the SDN controller successfully receives an operation request; the operation result comprises an NS instance identifier and a VL operation identifier. Correspondingly, the NFVO sends a first operation request to the VIM through the first enhanced interface; the VIM sends a second operation request to the SDN controller for sending network configuration parameters to the forwarding device. The first enhanced interface may specifically refer to the description in the foregoing embodiments, and details are not repeated here.

In some optional embodiments of the invention, the NFVO obtains, by the VIM, information characterizing the network configuration parameter sending exception, including: the NFVO receives information which is sent by the VIM and represents the abnormal sending of the network configuration parameters through a first newly added interface of the VIM; the information includes an NS instance identification. The first new interface may specifically refer to the foregoing embodiments, and details are not repeated here.

In some optional embodiments of the present invention, the NFVO obtaining, by the VIM, information characterizing the network configuration parameter sending exception, including: the NFVO sends a second query request to the VIM through a second newly added interface of the VIM, wherein the second query request is used for querying whether the network configuration parameters are sent abnormally or not; and the NFVO receives the information which is sent by the VIM and represents the abnormal sending of the network configuration parameters through the second newly added interface. The second newly added interface may specifically refer to the foregoing embodiments, and details are not described here.

In some optional embodiments of the invention, the method further comprises: the NFVO determines to query the operation condition related to the specific NS instance according to the information recorded by the second operation record table; sending, by a first enhanced interface of the VIM, an operation query request to the VIM, the operation query request including at least one of: NS instance identification and VL operation identification; and the NFVO receives a network configuration operation result sent by the VIM through a second newly added interface of the VIM.

Fig. 6 is a schematic diagram illustrating parameter association management in an operation record table in the data transmission method according to the embodiment of the present invention; referring to fig. 6, the VL operation is triggered by any one of the first enhanced interfaces createbpeneighbor interface, createexroutues interface, createpcconnection interface, CreateTapService interface, and CreateTapFlow interface to further carry the NS instance ID and the VL operation type in the NFVO-to-VIM direction, and further carry the operation ID, the NS instance ID, and the VL operation type in the VIM-to-NFVO direction. The VIM includes a VL operation record table, also called a first operation record table, in which: an NS instance ID, a VL operation ID, a VL sub-operation ID, a first flag bit, and a second flag bit. In NFVO, there is a VL operation record table, also called a second operation record table, in which VIM ID, NS instance ID, VL operation type, and VL operation ID are recorded. By adding a VIM northbound interface FailedOperationDetail and a QueryOperationDetail, when abnormity occurs in the VL operation process, the VIM can actively report abnormal information through the FailedOperationDetail, or the NFVO actively inquires the abnormal information of related operations through the QueryOperationDetail.

The following describes embodiments of the present invention in detail with reference to specific examples.

Example one

In this embodiment, both the SDN-C northbound interface and the southbound interface are synchronous interfaces, and the interface timeout time is set, as shown in table 10.

TABLE 10

Fig. 7 is a first schematic application flow chart of a data transmission method according to an embodiment of the present invention; as shown in fig. 7, the method includes:

step 301: NFVO calls the VIM northbound interface to create the network connectivity resource VL, i.e. sends a first operation request to the VIM, where the first operation request is used to create the network connectivity resource VL. Wherein, the VIM northbound interface is a synchronous interface, and the timeout duration is set to be T1.

Step 302: and after receiving the first operation request, the VIM allocates a network resource creation task to the Neutron component based on an Openstack mechanism. And the Neutron component calls SDN-C Plug-in, SDN-C Driver and the like in the Neutron component, and requests to create related network connectivity resources VL by calling an SDN-C northbound interface, namely sends a second operation request to the SDN-C. The SDN-C northbound interface is a synchronous interface, and the timeout duration is set to be T2.

Step 303: and the SDN-C sends the network configuration parameters to the forwarding equipment through a southbound interface. And the SDN-C southbound interface is a synchronous interface, and the timeout duration is set to be T3.

Step 304: within the duration of T3, if the network configuration parameter is successfully issued, the network configuration parameter is successfully sent; if the network configuration parameter fails to be issued, returning to the failure of sending the network configuration parameter; and if the SDN-C does not receive any sending result within the time length of T3, the network configuration parameter is considered to be failed to issue.

Step 305: and in the time duration of T2, the SDN-C sends the network configuration parameter issuing result to the VIM through a northbound interface and stores the network configuration parameter issuing result in a database.

For example, the SDN-C may send a sending result indicating that the network configuration parameter sending is abnormal to the VIM only when the network configuration parameter sending is abnormal.

Step 306: within the duration of T1, the VIM returns the send result to NFVO.

For example, the VIM may send a sending result indicating the network configuration parameter sending abnormality to the NFVO only in the case where the network configuration parameter sending abnormality occurs.

Example two

In this example, both the SDN-C southbound interface and the northbound interface are asynchronous interfaces, the SDN-C sends the information related to the abnormal operation to the VIM, and the VIM actively reports the information to the NFVO. Specific interfaces are shown in table 11 below.

TABLE 11

The VIM northbound interfaces referred to in this example may include the following:

1)CreateBGPNeighbor；

2)CreateExroutes；

3)CreateVPCConnection；

4)CreateTapService；

5)CreateTapFlow；

6)FailedOperationDetail；

the first five interfaces are the first enhanced interfaces in the foregoing embodiment, and the sixth interface is the first newly enhanced interface. In the following method steps, if not specifically stated, the VIM northbound interface may be implemented by the first five interfaces.

Fig. 8 is a schematic application flow diagram of a data transmission method according to an embodiment of the present invention; as shown in fig. 8, the method includes:

step 401: and the NFVO calls a VIM northbound interface and sends a first operation request to the VIM, namely, a relevant network configuration operation request is issued.

Illustratively, the NFVO writes parameters such as VIM ID, NS instance ID, VL operation type, VL operation ID, etc. into the second operation record table in the above embodiment, for example, as shown in table 9.

Step 402: and the VIM issues a second operation request to the SDN-C through the SDN-C northbound interface. The SDN-C northing is an asynchronous interface, that is, after the SDN-C successfully receives the operation request, an operation result of "successfully received request" is returned to the VIM.

Here, after receiving the first operation request, the VIM sets the "successfully received operation request flag" to "1" in the first operation record table (see table 8) in the above embodiment, and returns the operation success result to the NFVO.

Here, the VIM acquires the related operation request and the associated NS instance ID, calls SDN-C plug-in, SDN-C Driver, and the like through the Neutron component, passes the atomic operation request and the associated NS ID of the related operation, and writes the NS instance ID, VL operation ID, and VL sub-operation ID into the first operation record table.

Step 403: and the SDN-C sends the network configuration parameters to the forwarding equipment through a southbound interface.

Step 404: the SDN-C can continuously monitor the state of the underlying forwarding equipment and the issuing condition of network configuration parameters.

Step 405: if the network configuration parameter is abnormally issued, the SDN-C actively returns the network configuration parameter to the VIM, and records the network configuration parameter in the VIM database. At the same time, the VIM sets the corresponding "abnormal flag bit" to "1" in the first operation record table (as shown in table 8).

Step 406: and the VIM issues an exception to the network configuration parameters and returns the exception to the NFVO through a FailedOperationDetail interface.

Example three

In this example, NFVO queries the VIM for relevant network configuration delivery by specifying a specific network connectivity operation request in a specific NS instance. Wherein, the SDN-C southbound interface and the northbound interface are asynchronous interfaces, and the specific interfaces are shown in table 12 below.

TABLE 12

1)CreateBGPNeighbor；

2)CreateExroutes；

3)CreateVPCConnection；

4)CreateTapService；

5)CreateTapFlow；

6)QueryOperationDetail；

the first five interfaces are the first enhanced interfaces in the foregoing embodiment, and the sixth interface is the second newly added interface. In the following method steps, if not specifically stated, the VIM northbound interface can be implemented by the first five interfaces.

Fig. 9 is a schematic application flow chart of a data transmission method according to an embodiment of the present invention; as shown in fig. 9, the method includes:

step 501: NFVO calls VIM north interface to send query request to VIM.

Here, the NFVO queries the network connectivity parameter configuration operation scenario associated with a particular NS instance based on the record information (including NS instance ID, VL operation ID, etc.) in the second operation record table. Illustratively, the query request may include an identification of a particular NS instance.

The VIM northbound interface may be specifically implemented by the first enhanced interface in the foregoing embodiment.

Step 502: the VIM receives the query request, calls SDN-C plug, SDN-C driver and the like through a Neutron component, and transmits the relevant query request to the SDN-C through an SDN-C northbound interface.

Step 503: and the SDN-C inquires a network configuration operation result from a specific forwarding device through a southbound interface.

Step 504: and the SDN-C acquires a network configuration operation result.

Step 505: and the SDN-C returns the network configuration operation result to the VIM through the northbound interface and writes the network configuration operation result into the database.

Step 506: the VIM returns the query results to the NFVO.

Example four

In this example, SDN-C sends the abnormal operation related information to VIM, VIM does not actively report to NFVO, and NFVO needs to actively query VIM to obtain the related abnormal information. Wherein, the SDN-C southbound interface and the northbound interface are asynchronous interfaces, and the specific interfaces are shown in table 13 below.

Watch 13

1)CreateBGPNeighbor；

2)CreateExroutes；

3)CreateVPCConnection；

4)CreateTapService；

5)CreateTapFlow；

6)QueryOperationDetail；

the first five interfaces are the first enhanced interfaces in the foregoing embodiment, and the sixth interface is the second newly added interface. In the following method steps, if not specifically stated, the VIM northbound interface may be implemented by the first five interfaces.

Fig. 10 is a schematic application flow chart of a data transmission method according to an embodiment of the present invention; as shown in fig. 10, the method includes:

step 601: and the NFVO calls a VIM northbound interface and sends a first operation request to the VIM, namely, a relevant network configuration operation request is issued.

Illustratively, the NFVO writes parameters such as VIM ID, NS instance ID, VL operation type, VL operation ID, etc. into the second operation record table in the above embodiments, for example, as shown in table 9.

Step 602: and the VIM issues a second operation request to the SDN-C through the SDN-C north interface. The SDN-C northing is an asynchronous interface, that is, after the SDN-C successfully receives the operation request, an operation result of "successfully received request" is returned to the VIM.

Step 603: and the SDN-C sends the network configuration parameters to the forwarding equipment through a southbound interface.

Step 604: the SDN-C can continuously monitor the state of the underlying forwarding equipment and the issuing condition of network configuration parameters.

Step 605: if the network configuration parameter is abnormally issued, the SDN-C actively returns the network configuration parameter to the VIM, and records the network configuration parameter in the VIM database. While the VIM places the corresponding "exception flag" in the first operation record table (as shown in table 8) to "1".

Step 606: NFVO calls VIM northbound interface QueryOperationDetail, actively queries related operation results from VIM, and acquires information representing network configuration parameter issuing abnormity.

By adopting the technical scheme of the embodiment of the invention, on the first hand, the SDN controller reports the sending result of the network configuration parameters, so that the SDN controller and the MANO data are kept consistent. In the second aspect, the existing VIM northbound interface is enhanced, and an NS instance identifier and an operation identifier are added, so that the association between VL operation and the NS instance is realized; based on the association relationship and the related identification between the VL operation and the NS instance, when an exception occurs in the VL operation process, the VIM can actively report the exception information through the FailedOperationDetail or the NFVO actively queries the exception information of the related operation through the QueryOperationDetail by newly adding the FailedOperationDetail and the QueryOperationDetail. In a third aspect, by adding an operation record table in NFVO and VIM, and recording information such as an NS instance ID, a VL operation ID, and an operation abnormal flag associated with a related VL operation, a consistent account checking of network configuration operation information records of the NFVO-VIM-SDN controller is realized under two types of interface settings that an NFVO-VIM interface is a synchronous interface, an SDN controller has an asynchronous south/north direction, or both the NFVO-VIM interface and the SDN controller have a synchronous interface.

The embodiment of the invention also provides a data transmission device which is applied to the SDN controller. FIG. 11 is a first schematic diagram illustrating a first exemplary embodiment of a data transmission apparatus; as shown in fig. 11, the apparatus includes: a first interface unit 11 and a second interface unit 12; wherein the content of the first and second substances,

the first interface unit 11 is configured to receive an operation request from the NFV MANO;

the second interface unit 12 is configured to send a network configuration parameter to a forwarding device based on the operation request; the network configuration module is also used for acquiring the sending result of the network configuration parameters;

the first interface unit 11 is further configured to send, to the NFV MANO, first information that indicates that the network configuration parameter is abnormally sent, if the sending result indicates that the network configuration parameter is abnormally sent.

In some optional embodiments of the present invention, the second interface unit 12 is configured to receive a sending result sent by the forwarding device within a first preset time duration; the sending result indicates that the network configuration parameter is sent successfully or the network configuration parameter is sent abnormally; or, the transmission result sent by the forwarding device is not received within the first preset time length, and it is determined that the network configuration parameter is abnormally sent.

In some optional embodiments of the present invention, the second interface unit 12 is configured to monitor a status of the forwarding device and a transmission result of the network configuration parameter.

In some optional embodiments of the present invention, the first interface unit 11 is further configured to, after receiving the operation request from the NFV MANO, send an operation result indicating that the operation request has been successfully received to the NFV MANO.

In some optional embodiments of the invention, the first interface unit 11 is further configured to receive a first query request from the NFV MANO;

the second interface unit 12 is further configured to query a network configuration operation result of the forwarding device based on the first query request;

the first interface unit 11 is further configured to send the network configuration operation result to the NFV MANO.

In the embodiment of the present invention, the first interface unit 11 and the second interface unit 12 in the apparatus can be implemented by a communication module (including a basic communication suite, an operating system, a communication module, a standardized interface, a standardized protocol, etc.) and a transceiver antenna in practical application.

The embodiment of the invention also provides a data transmission device applied to the VIM. Fig. 12 is a schematic structural diagram of a data transmission device according to an embodiment of the present invention; as shown in fig. 12, the apparatus includes: a third interface unit 21 and a fourth interface unit 22; wherein the content of the first and second substances,

the third interface unit 21 is configured to receive a first operation request sent by the NFVO;

the fourth interface unit 22 is configured to send a second operation request to the SDN controller; the second operation request is used for sending network configuration parameters to the forwarding equipment; the SDN controller is further used for receiving first information sent by the SDN controller, wherein the first information represents that the network configuration parameter is sent abnormally;

the third interface unit 21 is further configured to send, to the NFVO, information representing that the network configuration parameter sending is abnormal.

In some optional embodiments of the present invention, the third interface unit 21 is configured to receive, through a first enhanced interface, a first operation request sent by the NFVO; the first operation request at least comprises a network service NS instance identifier, a VIM identifier, a VL operation type and a VL operation identifier.

In some optional embodiments of the present invention, as shown in fig. 13, the apparatus further includes a first recording unit 23, configured to add the NS instance identifier, the VL operation identifier, and the VL sub-operation identifier to the first operation record table.

In some optional embodiments of the present invention, the first operation record table further includes a first flag bit, where the first flag bit indicates whether a transmission result of the network configuration parameter is abnormal;

the first recording unit 23 is further configured to set the first flag bit in the first operation record table to a first value after the second receiving unit receives the first information sent by the SDN controller.

In some optional embodiments of the present invention, the first operation record table further includes a second flag bit, where the second flag bit indicates whether the operation request is successfully received;

the first recording unit 23 is further configured to mark the second flag bit in the first operation record table as a second numerical value.

In some optional embodiments of the present invention, the fourth interface unit 22 is further configured to receive an operation result sent by the SDN controller and indicating that the second operation request has been successfully received; the operation result comprises an NS instance identifier and a VL operation identifier;

the third interface unit 21 is further configured to send the operation result to the NFVO through the first enhanced interface.

In some optional embodiments of the present invention, the third interface unit 21 is configured to send, to the NFVO, information representing that the network configuration parameter sending exception through the first newly added interface; the information includes an NS instance identification.

In some optional embodiments of the present invention, the third interface unit 21 is configured to receive, through a second newly added interface, a second query request sent by the NFVO;

the first recording unit 23 is further configured to query the first operation record table based on the second query request, and determine that the network configuration parameter is abnormal to be sent based on the first flag bit in the first operation record table;

the third interface unit 21 is further configured to send, to the NFVO, information representing that the network configuration parameter is sent abnormally through the second newly added interface.

In some optional embodiments of the present invention, the third interface unit 21 is further configured to receive, through the first enhanced interface, an operation query request sent by the NFVO; the operation inquiry request at least comprises one of the following requests: NS instance identification and VL operation identification;

the fourth interface unit 22 is further configured to send the operation query request to the SDN controller; the SDN is further used for receiving a network configuration operation result sent by the SDN;

the third interface unit 21 is further configured to send the network configuration operation result to the NFVO through a second newly added interface.

In some optional embodiments of the invention, the first enhanced interface comprises one of: CreateBGPNeighbor interface, CreateExroutes interface, CreateVPCConnection interface, CreateTapService interface and CreateTapFlaw interface;

the third interface unit 21 receives an extension field including an NS instance identifier in a message from the NFVO through the first enhanced interface;

the extension field in the message sent by the third interface unit 21 to the NFVO through the first enhanced interface includes the NS instance identifier and the VL operation identifier.

In the embodiment of the present invention, the first recording Unit 23 in the apparatus may be implemented by a Central Processing Unit (CPU), a Digital Signal Processor (DSP), a Micro Control Unit (MCU), or a Programmable Gate Array (FPGA) in practical application; the third interface unit 21 and the fourth interface unit 22 in the device can be realized by a communication module (including a basic communication suite, an operating system, a communication module, a standardized interface, a protocol and the like) and a transceiving antenna in practical application.

The embodiment of the invention also provides a data transmission device which is applied to the NFVO. Fig. 14 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention; as shown in fig. 14, the apparatus includes: a first transmitting unit 31 and a first receiving unit 32; wherein the content of the first and second substances,

the first sending unit 31 is configured to send, by the VIM, an operation request to the SDN controller, where the operation request is used to send a network configuration parameter to a forwarding device;

the first receiving unit 32 is configured to, when the network configuration parameter is abnormal, obtain, by the VIM, information representing that the network configuration parameter is abnormal.

In some optional embodiments of the present invention, the first sending unit 31 is configured to send, to the VIM through the first enhanced interface of the VIM, a first operation request, where the first operation request includes at least an NS instance identifier, a VIM identifier, a VL operation type, and a VL operation identifier.

In some optional embodiments of the present invention, as shown in fig. 15, the apparatus further comprises a second recording unit 33, configured to add the NS instance identifier, the VIM identifier, the VL operation type, and the VL operation identifier to a second operation record table.

In some optional embodiments of the present invention, the first receiving unit 32 is further configured to, after sending an operation request to an SDN controller by the VIM, receive, through a first enhanced interface of the VIM, an operation result sent by the VIM, where the operation result indicates that the SDN controller has successfully received the operation request; the operation result comprises an NS instance identifier and a VL operation identifier.

In some optional embodiments of the present invention, the first receiving unit 32 is configured to receive, through the first newly added interface of the VIM, information that is sent by the VIM and that characterizes the network configuration parameter sending anomaly; the information includes an NS instance identification.

In some optional embodiments of the present invention, the first sending unit 31 is configured to send a second query request to the VIM through a second newly added interface of the VIM, where the second query request is used to query whether the network configuration parameter is sent abnormally;

the first receiving unit 32 is configured to receive, through the second newly added interface, information that is sent by the VIM and that characterizes that the network configuration parameter is sent abnormally.

In some optional embodiments of the present invention, the second recording unit 33 is further configured to determine, according to information recorded in the second operation record table, an operation condition related to querying the specific NS instance;

the first sending unit 31 is further configured to send, to the VIM through the first enhanced interface of the VIM, an operation query request, where the operation query request includes at least one of: NS instance identification and VL operation identification;

the first receiving unit 32 is further configured to receive, through the second newly added interface of the VIM, a network configuration operation result sent by the VIM.

In the embodiment of the present invention, the second recording unit 33 in the apparatus may be implemented by a CPU, a DSP, an MCU, or an FPGA in practical application; the first sending unit 31 and the first receiving unit 32 in the device can be realized by a communication module (including a basic communication suite, an operating system, a communication module, a standardized interface, a standardized protocol and the like) and a transceiving antenna in practical application.

It should be noted that: in the data transmission device provided in the foregoing embodiment, when data transmission is performed, only the division of the program modules is illustrated, and in practical applications, the processing allocation may be completed by different program modules according to needs, that is, the internal structure of the device is divided into different program modules, so as to complete all or part of the processing described above. In addition, the data transmission device and the data transmission method provided by the above embodiments belong to the same concept, and specific implementation processes thereof are described in the method embodiments and are not described herein again.

An embodiment of the present invention further provides a communication device, where the communication device may specifically be an SDN controller, a VIM, or an NFVO in the foregoing embodiment. Fig. 16 is a schematic diagram of a hardware structure of a communication device according to an embodiment of the present invention, as shown in fig. 16, the communication device includes a memory 42, a processor 41, and a computer program stored in the memory 42 and executable on the processor 41, and when the processor 41 executes the computer program, the processor 41 implements the foregoing steps of the data transmission method applied in the SDN controller according to the embodiment of the present invention; alternatively, when the processor 41 executes the program, the steps of the data transmission method applied to VIM in the embodiment of the present invention are implemented; alternatively, the processor 41 implements the steps of the data transmission method applied in NFVO according to the foregoing embodiment of the present invention when executing the program.

Wherein, the communication device may further comprise a communication interface 43. It will be appreciated that the various components of the communication device are coupled together by a bus system 44. It will be appreciated that the bus system 44 is used to enable communications among the components. The bus system 44 includes a power bus, a control bus, and a status signal bus in addition to the data bus. For clarity of illustration, however, the various buses are labeled as bus system 44 in fig. 16.

It will be appreciated that the memory 42 can be either volatile memory or nonvolatile memory, and can include both volatile and nonvolatile memory. Among them, the nonvolatile Memory may be a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a magnetic random access Memory (FRAM), a Flash Memory (Flash Memory), a magnetic surface Memory, an optical disk, or a Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM), Synchronous Dynamic Random Access Memory (SLDRAM), Direct Memory (DRmb Access), and Random Access Memory (DRAM). The memory 42 described in connection with the embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.

The method disclosed in the above embodiments of the present invention may be applied to the processor 41, or implemented by the processor 41. The processor 41 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 41. The processor 41 described above may be a general purpose processor, a DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. Processor 41 may implement or perform the methods, steps, and logic blocks disclosed in the embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in memory 42, where processor 41 reads the information in memory 42 and in combination with its hardware performs the steps of the method described above.

In an exemplary embodiment, the communication Device may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), Complex Programmable Logic Devices (CPLDs), FPGAs, general purpose processors, controllers, MCUs, microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.

In an exemplary embodiment, the present invention further provides a computer readable storage medium, such as the memory 42, comprising a computer program, which is executable by the processor 41 of the communication device to perform the steps of the aforementioned method. The computer readable storage medium can be Memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface Memory, optical disk, or CD-ROM; or may be various devices including one or any combination of the above memories.

An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the foregoing steps of the data transmission method applied in the SDN controller according to the embodiment of the present invention; or, the program is executed by a processor to implement the steps of the data transmission method applied in VIM in the foregoing embodiments of the present invention; alternatively, the program is executed by a processor to implement the steps of the data transmission method applied to NFVO in the embodiment of the present invention.

The methods disclosed in the several method embodiments provided in the present application may be combined arbitrarily without conflict to arrive at new method embodiments.

The features disclosed in the several product embodiments presented in this application can be combined arbitrarily, without conflict, to arrive at new product embodiments.

The features disclosed in the several method or apparatus embodiments provided in the present application may be combined arbitrarily, without conflict, to arrive at new method embodiments or apparatus embodiments.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only one logical function division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, all functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated into one unit; the integrated unit may be implemented in the form of hardware, or in the form of hardware plus a software functional unit.

Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media that can store program code.

Alternatively, the integrated unit of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention or portions thereof contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media capable of storing program code.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method of data transmission, the method comprising:

a Software Defined Network (SDN) controller receives an operation request from network function virtualization management and scheduling (NFV) MANO, and sends network configuration parameters to forwarding equipment based on the operation request;

obtaining a sending result of the network configuration parameter;

and if the sending result shows that the network configuration parameter is abnormally sent, sending first information for representing the abnormal sending of the network configuration parameter to the NFV MANO.

2. The method of claim 1, wherein obtaining the transmission result of the network configuration parameter comprises:

the SDN controller receives a sending result sent by the forwarding equipment within a first preset time length; the sending result indicates that the network configuration parameter is sent successfully or the network configuration parameter is sent abnormally; alternatively, the first and second liquid crystal display panels may be,

the SDN controller does not receive a sending result sent by the forwarding equipment within the first preset time length, and determines that the network configuration parameters are sent abnormally.

3. The method of claim 1, wherein obtaining the transmission result of the network configuration parameter comprises:

the SDN controller monitors the state of the forwarding device and the sending result of the network configuration parameters.

4. The method of claim 3, wherein after the SDN controller receives an operation request from the NFV MANO, the method further comprises:

and the SDN controller sends an operation result representing that the operation request is successfully received to the NFV MANO.

5. The method according to any one of claims 1 to 4, further comprising:

the SDN controller receives a first query request from the NFV MANO, queries a network configuration operation result of forwarding equipment based on the first query request, and sends the network configuration operation result to the NFV MANO.

6. A method of data transmission, the method comprising:

the method comprises the steps that a virtual infrastructure manager VIM receives a first operation request sent by an NFV orchestrator NFVO and sends a second operation request to a Software Defined Network (SDN) controller; the second operation request is used for sending network configuration parameters to the forwarding equipment;

receiving first information sent by the SDN controller, wherein the first information represents that the network configuration parameters are sent abnormally, and sending information representing that the network configuration parameters are sent abnormally to the NFVO.

7. The method of claim 6, wherein the VIM receives a first operation request from NFVO transmission, comprising:

the VIM receives a first operation request sent by the NFVO through a first enhanced interface; the first operation request at least comprises a network service NS instance identifier, a VIM identifier, a VL operation type and a VL operation identifier.

8. The method of claim 7, wherein after the VIM receives the first operation request from the NFVO, the method further comprises:

and the VIM adds the NS instance identifier, the VL operation identifier and the VL sub-operation identifier to a first operation record table.

9. The method according to claim 8, wherein the first operation record table further includes a first flag bit, and the first flag bit indicates whether a transmission result of the network configuration parameter is abnormal;

after receiving the first information sent by the SDN controller, the method further includes:

and the VIM sets the first flag position in the first operation record table to be a first numerical value.

10. The method of claim 8, further comprising a second flag bit in the first operation record table, wherein the second flag bit indicates whether the operation request is successfully received;

after the VIM receives the first operation request sent by the NFVO, the method further comprises:

and the VIM records the second flag bit in the first operation record table as a second numerical value.

11. The method of claim 7, further comprising:

the VIM receives an operation result sent by the SDN controller and indicating that the second operation request is successfully received, and sends the operation result to the NFVO through the first enhanced interface; the operation result comprises an NS instance identifier and a VL operation identifier.

12. The method of claim 6, wherein the sending the information characterizing the network configuration parameter sending exception to the NFVO comprises:

the VIM sends information representing the abnormal sending of the network configuration parameters to the NFVO through the first newly added interface; the information includes an NS instance identification.

13. The method of claim 9, wherein the sending the information characterizing the network configuration parameter sending exception to the NFVO comprises:

the VIM receives a second query request sent by the NFVO through a second newly added interface, queries the first operation record table based on the second query request, and determines that the network configuration parameter is sent abnormally based on the first flag bit in the first operation record table;

and sending information representing the abnormal sending of the network configuration parameters to the NFVO through the second newly added interface.

14. The method of claim 6, further comprising:

the VIM receives an operation query request sent by the NFVO through a first enhanced interface and sends the operation query request to the SDN controller; the operation inquiry request at least comprises one of the following: NS instance identification and VL operation identification;

and receiving a network configuration operation result sent by the SDN, and sending the network configuration operation result to the NFVO through a second newly added interface.

15. The method of claim 7, 11 or 14, wherein the first enhanced interface comprises one of: CreateBGPNeighbor interface, CreateExroutes interface, CreateVPCConnection interface, CreateTapService interface and CreateTapFlaw interface;

the VIM receives an extension field including NS instance identification in a message from the NFVO through the first enhanced interface;

the extension field in the message sent by the VIM to the NFVO through the first enhanced interface includes the NS instance identification and a VL operation identification.

16. A method of data transmission, the method comprising:

the method comprises the steps that an NFV orchestrator NFVO sends an operation request to a Software Defined Network (SDN) controller through a Virtual Infrastructure Manager (VIM), wherein the operation request is used for sending network configuration parameters to forwarding equipment;

and under the condition that the network configuration parameters are abnormally sent, the NFVO acquires information representing the abnormal sending of the network configuration parameters through the VIM.

17. The method of claim 16, wherein the NFVO sends the operation request to the SDN controller via the VIM, comprising:

the NFVO sends a first operation request to the VIM through a first enhanced interface of the VIM, wherein the first operation request at least comprises a network service NS instance identifier, a VIM identifier, a VL operation type and a VL operation identifier.

18. The method of claim 17, further comprising:

and the NFVO adds the NS instance identifier, the VIM identifier, the VL operation type and the VL operation identifier to a second operation record table.

19. The method of claim 16, wherein after the NFVO sends an operation request to an SDN controller via VIM, the method further comprises:

the NFVO receives an operation result sent by the VIM through a first enhanced interface of the VIM, wherein the operation result represents that the SDN controller successfully receives an operation request; the operation result comprises an NS instance identifier and a VL operation identifier.

20. The method as claimed in claim 16, wherein the NFVO obtains the information characterizing the network configuration parameter sending exception through the VIM, including:

the NFVO receives information which is sent by the VIM and represents the abnormal sending of the network configuration parameters through a first newly-added interface of the VIM; the information includes an NS instance identification.

21. The method as claimed in claim 16, wherein the NFVO obtains the information characterizing the network configuration parameter sending exception through the VIM, including:

the NFVO sends a second query request to the VIM through a second newly added interface of the VIM, wherein the second query request is used for querying whether the network configuration parameters are sent abnormally or not;

and the NFVO receives the information which is sent by the VIM and represents the abnormal sending of the network configuration parameters through the second newly added interface.

22. The method of claim 18, further comprising:

the NFVO determines to query the operation condition related to the specific NS instance according to the information recorded by the second operation record table;

sending, by a first enhanced interface of the VIM, an operation query request to the VIM, the operation query request including at least one of: NS instance identification and VL operation identification;

and the NFVO receives a network configuration operation result sent by the VIM through a second newly added interface of the VIM.

23. A data transmission apparatus, characterized in that the apparatus comprises: a first interface unit and a second interface unit; wherein the content of the first and second substances,

the first interface unit is further configured to send, to the NFV MANO, first information that characterizes the network configuration parameter sending abnormality, if the sending result indicates that the network configuration parameter sending abnormality is sent.

24. The apparatus according to claim 23, wherein the second interface unit is configured to receive a transmission result sent by the forwarding device within a first preset duration; the sending result indicates that the network configuration parameter is sent successfully or the network configuration parameter is sent abnormally; or, the transmission result sent by the forwarding device is not received within the first preset time length, and it is determined that the network configuration parameter is abnormally sent.

25. The apparatus of claim 23, wherein the second interface unit is configured to monitor a status of the forwarding device and a transmission result of the network configuration parameter.

26. The apparatus of claim 25, wherein the first interface unit is further configured to send an operation result to the NFV MANO after receiving the operation request from the NFV MANO, the operation result indicating that the operation request has been successfully received.

27. The apparatus according to any of claims 23 to 26, wherein said first interface unit is further configured to receive a first query request from said NFV MANO;

28. A data transmission apparatus, characterized in that the apparatus comprises: a third interface unit and a fourth interface unit; wherein the content of the first and second substances,

the third interface unit is further configured to send, to the NFVO, information that characterizes the sending abnormality of the network configuration parameter.

29. The apparatus of claim 28, wherein the third interface unit is configured to receive a first operation request sent from the NFVO through a first enhanced interface; the first operation request at least comprises a network service NS instance identifier, a VIM identifier, a VL operation type and a VL operation identifier.

30. The apparatus of claim 29, further comprising a first recording unit configured to add the NS instance identifier, the VL operation identifier, and the VL sub-operation identifier to a first operation record table.

31. The apparatus according to claim 30, wherein the first operation record table further comprises a first flag bit, and the first flag bit indicates whether a transmission result of the network configuration parameter is abnormal;

32. The apparatus of claim 30, wherein the first operation record table further comprises a second flag bit, and the second flag bit indicates whether the operation request is successfully received;

33. The apparatus of claim 29, wherein the fourth interface unit is further configured to receive an operation result sent by the SDN controller and indicating that the second operation request has been successfully received; the operation result comprises an NS instance identifier and a VL operation identifier;

34. The apparatus of claim 28, wherein the third interface unit is configured to send, to the NFVO via the first newly added interface, information that characterizes a sending exception of the network configuration parameter; the information includes an NS instance identification.

35. The apparatus of claim 31, wherein the third interface unit is configured to receive a second query request sent by the NFVO through a second newly added interface;

the third interface unit is further configured to send, to the NFVO, information representing that the network configuration parameter is sent abnormally through the second newly added interface.

36. The apparatus of claim 28, wherein the third interface unit is further configured to receive an operation query request sent by the NFVO through a first enhanced interface; the operation inquiry request at least comprises one of the following: NS instance identification and VL operation identification;

37. The apparatus of claim 29, 33 or 36, wherein the first enhanced interface comprises one of: CreateBGPNeighbor interface, CreateExroutes interface, CreateVPCConnection interface, CreateTapService interface and CreateTapFlaw interface;

38. A data transmission apparatus, characterized in that the apparatus comprises: a first transmitting unit and a first receiving unit; wherein the content of the first and second substances,

39. The apparatus of claim 38, wherein the first sending unit is configured to send a first operation request to the VIM through a first enhanced interface of the VIM, and wherein the first operation request comprises at least a network service NS instance identifier, a VIM identifier, a VL operation type, and a VL operation identifier.

40. The apparatus of claim 39, further comprising a second record unit to add the NS instance identifier, the VIM identifier, the VL operation type, and the VL operation identifier to a second operation record table.

41. The apparatus of claim 38, wherein the first receiving unit is further configured to receive, through a first enhanced interface of the VIM, an operation result sent by the VIM after sending an operation request to an SDN controller through the VIM, where the operation result indicates that the SDN controller has successfully received the operation request; the operation result comprises an NS instance identifier and a VL operation identifier.

42. The apparatus of claim 38, wherein the first receiving unit is configured to receive, through a first newly-added interface of the VIM, information that is sent by the VIM and that characterizes the network configuration parameter sending anomaly; the information includes an NS instance identification.

43. The apparatus of claim 38, wherein the first sending unit is configured to send a second query request to the VIM through a second addition interface of the VIM, where the second query request is used to query whether the network configuration parameters send an exception;

and the first receiving unit is configured to receive, through the second newly added interface, information that represents that the network configuration parameter is abnormally sent and is sent by the VIM.

44. The apparatus of claim 40, wherein the second recording unit is further configured to determine, according to information recorded in the second operation record table, an operation condition related to querying the specific NS instance;

45. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 5; or the program, when executed by a processor, implements the steps of the method of any one of claims 6 to 15; alternatively, the program when executed by a processor implements the steps of the method of any one of claims 16 to 22.

46. A communication device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the method of any one of claims 1 to 5 when executing the program; alternatively, the processor, when executing the program, implements the steps of the method of any one of claims 6 to 15; alternatively, the processor implements the steps of the method of any one of claims 6 to 22 when executing the program.