CN110690989A

CN110690989A - Service data transmission method, device and computer readable storage medium

Info

Publication number: CN110690989A
Application number: CN201910824089.6A
Authority: CN
Inventors: 谢茜茜; 李红雨; 牛永会; 沈军
Original assignee: Visionvera Information Technology Co Ltd
Current assignee: Visionvera Information Technology Co Ltd
Priority date: 2019-09-02
Filing date: 2019-09-02
Publication date: 2020-01-14

Abstract

The application provides a service data transmission method, a device and a computer readable storage medium, which are applied to a video networking system, wherein the video networking system comprises a first terminal device and a second terminal device, and the first terminal device and the second terminal device are connected through a first video networking link and a second video networking link, and the method comprises the following steps: firstly, detecting the connection state of a first video network link and a second video network link, then determining a target working link according to the connection state and the priority of the first video network link and the second video network link, and then adopting the target working link to transmit service data. According to the method and the device, the target working link is determined to be the first video networking link or the second video networking link through the video networking communication state, and service switching can be achieved when a certain video networking link fails, so that the reliability and the survivability of video networking services are improved.

Description

Service data transmission method, device and computer readable storage medium

Technical Field

The present application relates to the field of video networking technologies, and in particular, to a method and an apparatus for transmitting service data, and a computer-readable storage medium.

Background

The video networking is an important milestone for network development, and is a network system which can realize real-time high-definition video transmission and push a plurality of internet applications to high-definition video and high-definition face-to-face.

However, when the existing video network carries data services, a single tunnel carries one client service, if the tunnel fails, the client network is directly abnormal, and the reliability of the video network to the services is not high.

Disclosure of Invention

In view of the above problems, embodiments of the present application are proposed to provide a traffic data transmission method, apparatus and computer-readable storage medium that overcome or at least partially solve the above problems.

In order to solve the above problem, an embodiment of the present application discloses a service data transmission method, where the method is applied to a video networking system, where the video networking system includes a first terminal device and a second terminal device, and a connection is established between the first terminal device and the second terminal device through a first video networking link and a second video networking link, and the method includes:

respectively carrying out connectivity detection on the first video networking link and the second video networking link to obtain the connectivity state of the first video networking link and the second video networking link;

determining a target working link according to the connection state of the first video networking link and the second video networking link and the priority of the first video networking link and the second video networking link, wherein the target working link is the first video networking link or the second video networking link;

and transmitting the service data between the first terminal equipment and the second terminal equipment by adopting the target working link.

In an optional implementation manner, the step of performing connectivity detection on the first and second video network links respectively includes:

the first terminal equipment generates a first message, wherein the first message comprises a link identifier, and the link identifier corresponds to the first video networking link or the second video networking link;

the first terminal equipment sends the first message to the second terminal equipment through the video networking link corresponding to the link identification;

if the second terminal device receives the first message sent by the first terminal device within a preset time length, the video network link corresponding to the link identifier is in a connection state;

and if the second terminal equipment does not receive the first message sent by the first terminal equipment within the preset time length, the video network link corresponding to the link identification is in a disconnected state.

In an alternative implementation, when the priority of the first video networking link is higher than the priority of the second video networking link, the step of determining a target working link according to the connectivity status of the first video networking link and the second video networking link and the priorities of the first video networking link and the second video networking link includes:

when the first video networking link and the second video networking link are in a connection state, determining that the first video networking link is a target working link;

when the first video network link is in a connection state and the second video network link is in a disconnection state, determining that the first video network link is a target working link;

when the first video network link is in a disconnection state and the second video network link is in a connection state, determining that the second video network link is a target working link;

and when the first video networking link and the second video networking link are in a disconnection state, determining that the first video networking link is a target working link.

In an optional implementation manner, the step of transmitting the service data between the first terminal device and the second terminal device by using the target working link includes:

acquiring a current working link, wherein the current working link is a video network link for performing service data transmission between the first terminal device and the second terminal device;

and when the current working link is different from the target working link, switching the current working link to the target working link to transmit the service data between the first terminal equipment and the second terminal equipment.

In order to solve the above problem, an embodiment of the present application discloses a service data transmission apparatus, where the apparatus is applied to a video networking system, the video networking system includes a first terminal device and a second terminal device, and a connection is established between the first terminal device and the second terminal device through a first video networking link and a second video networking link, the apparatus includes:

the detection module is configured to respectively perform connectivity detection on the first video network link and the second video network link to obtain the connectivity states of the first video network link and the second video network link;

a determination module configured to determine a target working link according to a connectivity status of the first and second video networking links and priorities of the first and second video networking links, the target working link being the first video networking link or the second video networking link;

and the transmission module is used for transmitting the service data between the first terminal equipment and the second terminal equipment by adopting the target working link.

In an optional implementation, the detection module is specifically configured to:

In an alternative implementation, when the priority of the first video networking link is higher than the priority of the second video networking link, the determining module is specifically configured to:

In an optional implementation, the transmission module is specifically configured to:

In order to solve the above problem, an embodiment of the present application further discloses an apparatus, including:

one or more processors; and

one or more machine readable media having instructions stored thereon, which when executed by the one or more processors, cause the apparatus to perform the traffic data transmission method of any of the embodiments.

In order to solve the above problem, an embodiment of the present application further discloses a computer-readable storage medium, where a stored computer program causes a processor to execute the service data transmission method according to any embodiment.

Compared with the prior art, the invention has the following advantages:

the embodiment of the application provides a service data transmission method, a service data transmission device and a computer readable storage medium, which are applied to a video networking system, wherein the video networking system comprises a first terminal device and a second terminal device, and the first terminal device and the second terminal device are connected through a first video networking link and a second video networking link, and the method comprises the following steps: firstly, detecting the connection state of a first video network link and a second video network link, then determining a target working link according to the connection state and the priority of the first video network link and the second video network link, and then adopting the target working link to transmit service data. According to the method and the device, the target working link is determined to be the first video networking link or the second video networking link through the video networking communication state, and service switching can be achieved when a certain video networking link fails, so that the reliability and the survivability of video networking services are improved.

Drawings

FIG. 1 is a networking schematic of a video network of the present application;

FIG. 2 is a schematic diagram of a hardware architecture of a node server according to the present application;

fig. 3 is a schematic diagram of a hardware architecture of an access switch of the present application;

fig. 4 is a schematic diagram of a hardware structure of an ethernet protocol conversion gateway according to the present application;

fig. 5 is a flowchart illustrating steps of a service data transmission method according to an embodiment of the present application;

FIG. 6 is a flow chart illustrating steps of a method for monitoring connectivity status according to an embodiment of the present disclosure;

FIG. 7 is a flowchart illustrating steps for determining a target working link according to an embodiment of the present disclosure;

FIG. 8 is a schematic diagram of a scenario in which an embodiment of the present application is applied;

fig. 9 is a schematic diagram illustrating switching between active and standby links according to an embodiment of the present application;

fig. 10 is a flowchart illustrating a specific implementation manner of a service data transmission method according to this embodiment;

fig. 11 is a schematic flow chart illustrating a specific implementation manner of another service data transmission method provided in this embodiment;

fig. 12 is a block diagram of a service data transmission apparatus according to an embodiment of the present application.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description.

The video networking is an important milestone for network development, is a real-time network, can realize high-definition video real-time transmission, and pushes a plurality of internet applications to high-definition video, and high-definition faces each other.

The video networking adopts a real-time high-definition video exchange technology, can integrate required services such as dozens of services of video, voice, pictures, characters, communication, data and the like on a system platform on a network platform, such as high-definition video conference, video monitoring, intelligent monitoring analysis, emergency command, digital broadcast television, delayed television, network teaching, live broadcast, VOD on demand, television mail, Personal Video Recorder (PVR), intranet (self-office) channels, intelligent video broadcast control, information distribution and the like, and realizes high-definition quality video broadcast through a television or a computer.

To better understand the embodiments of the present application, the following description refers to the internet of view:

some of the technologies applied in the video networking are as follows:

network technology (network technology)

Network technology innovation in video networking has improved over traditional Ethernet (Ethernet) to face the potentially enormous video traffic on the network. Unlike pure network packet switching (PacketSwitching) or network circuit switching (CircuitSwitching), the technology of the video networking adopts PacketSwitching to meet the Streaming requirement. The video networking technology has the advantages of flexibility, simplicity and low price of packet switching, and simultaneously has the quality and safety guarantee of circuit switching, thereby realizing the seamless connection of the whole network switching type virtual circuit and the data format.

Switching technology (Switching technology)

The video network adopts two advantages of asynchronism and packet switching of the Ethernet, eliminates the defects of the Ethernet on the premise of full compatibility, has end-to-end seamless connection of the whole network, is directly communicated with a user terminal, and directly bears an IP data packet. The user data does not require any format conversion across the entire network. The video networking is a higher-level form of the Ethernet, is a real-time exchange platform, can realize the real-time transmission of the whole-network large-scale high-definition video which cannot be realized by the existing Internet, and pushes a plurality of network video applications to high-definition and unification.

Server technology (Servertechnology)

The server technology on the video networking and unified video platform is different from the traditional server, the streaming media transmission of the video networking and unified video platform is established on the basis of connection orientation, the data processing capacity of the video networking and unified video platform is independent of flow and communication time, and a single network layer can contain signaling and data transmission. For voice and video services, the complexity of video networking and unified video platform streaming media processing is much simpler than that of data processing, and the efficiency is greatly improved by more than one hundred times compared with that of a traditional server.

Storage technology (Storage technology)

The super-high speed storage technology of the unified video platform adopts the most advanced real-time operating system in order to adapt to the media content with super-large capacity and super-large flow, the program information in the server instruction is mapped to the specific hard disk space, the media content is not passed through the server any more, and is directly sent to the user terminal instantly, and the general waiting time of the user is less than 0.2 second. The optimized sector distribution greatly reduces the mechanical motion of the magnetic head track seeking of the hard disk, the resource consumption only accounts for 20% of that of the IP internet of the same grade, but concurrent flow which is 3 times larger than that of the traditional hard disk array is generated, and the comprehensive efficiency is improved by more than 10 times.

Network security technology (NetworkSecuritytechnology)

The structural design of the video network completely eliminates the network security problem troubling the internet structurally by the modes of independent service permission control each time, complete isolation of equipment and user data and the like, generally does not need antivirus programs and firewalls, avoids the attack of hackers and viruses, and provides a structural carefree security network for users.

Service innovation technology (serviceInnovation technology)

The unified video platform integrates services and transmission, and is not only automatically connected once whether a single user, a private network user or a network aggregate. The user terminal, the set-top box or the PC are directly connected to the unified video platform to obtain various multimedia video services in various forms. The unified video platform adopts a menu type configuration table mode to replace the traditional complex application programming, can realize complex application by using very few codes, and realizes new service innovation of 'infinite'.

Networking of the video network is as follows:

the video network is a centralized control network structure, and the network can be a tree network, a star network, a ring network and the like, but on the basis of the centralized control node, the whole network is controlled by the centralized control node in the network.

As shown in fig. 1, the video network is divided into an access network and a metropolitan network.

The devices of the access network part can be mainly classified into 3 types: node server, access switch, terminal (including various set-top boxes, coding boards, memories, etc.). The node server is connected to an access switch, which may be connected to a plurality of terminals and may be connected to an ethernet network.

The node server is a node which plays a centralized control function in the access network and can control the access switch and the terminal. The node server can be directly connected with the access switch or directly connected with the terminal.

Similarly, devices of the metropolitan network portion may also be classified into 3 types: a metropolitan area server, a node switch and a node server. The metro server is connected to a node switch, which may be connected to a plurality of node servers.

The node server is a node server of the access network part, namely the node server belongs to both the access network part and the metropolitan area network part.

The metropolitan area server is a node which plays a centralized control function in the metropolitan area network and can control a node switch and a node server. The metropolitan area server can be directly connected with the node switch or directly connected with the node server.

Therefore, the whole video network is a network structure with layered centralized control, and the network controlled by the node server and the metropolitan area server can be in various structures such as tree, star and ring.

The access network part can form a unified video platform (the part in the dotted circle), and a plurality of unified video platforms can form a video network; each unified video platform may be interconnected via metropolitan area and wide area video networking.

1. Video networking device classification

1.1 devices in the video network of the embodiment of the present application can be mainly classified into 3 types: servers, switches (including ethernet gateways), terminals (including various set-top boxes, code boards, memories, etc.). The video network as a whole can be divided into a metropolitan area network (or national network, global network, etc.) and an access network.

1.2 wherein the devices of the access network part can be mainly classified into 3 types: node servers, access switches (including ethernet gateways), terminals (including various set-top boxes, code boards, memories, etc.).

The specific hardware structure of each access network device is as follows:

a node server:

as shown in fig. 2, the system mainly includes a network interface module 201, a switching engine module 202, a CPU module 203, and a disk array module 204;

the network interface module 201, the CPU module 203, and the disk array module 204 all enter the switching engine module 202; the switching engine module 202 performs an operation of looking up the address table 205 on the incoming packet, thereby obtaining the direction information of the packet; and stores the packet in a queue of the corresponding packet buffer 206 based on the packet's steering information; if the queue of the packet buffer 206 is nearly full, it is discarded; the switching engine module 202 polls all packet buffer queues for forwarding if the following conditions are met: 1) the port send buffer is not full; 2) the queue packet counter is greater than zero. The disk array module 204 mainly implements control over the hard disk, including initialization, read-write, and other operations on the hard disk; the CPU module 203 is mainly responsible for protocol processing with an access switch and a terminal (not shown in the figure), configuring an address table 205 (including a downlink protocol packet address table, an uplink protocol packet address table, and a data packet address table), and configuring the disk array module 204.

The access switch:

as shown in fig. 3, the network interface module mainly includes a network interface module (a downlink network interface module 301 and an uplink network interface module 302), a switching engine module 303 and a CPU module 304;

wherein, the packet (uplink data) coming from the downlink network interface module 301 enters the packet detection module 305; the packet detection module 305 detects whether the Destination Address (DA), the Source Address (SA), the packet type, and the packet length of the packet meet the requirements, and if so, allocates a corresponding stream identifier (stream-id) and enters the switching engine module 303, otherwise, discards the stream identifier; the packet (downstream data) coming from the upstream network interface module 302 enters the switching engine module 303; the incoming data packet of the CPU module 304 enters the switching engine module 303; the switching engine module 303 performs an operation of looking up the address table 306 on the incoming packet, thereby obtaining the direction information of the packet; if the packet entering the switching engine module 303 is from the downstream network interface to the upstream network interface, the packet is stored in the queue of the corresponding packet buffer 307 in association with the stream-id; if the queue of the packet buffer 307 is nearly full, it is discarded; if the packet entering the switching engine module 303 is not from the downlink network interface to the uplink network interface, the data packet is stored in the queue of the corresponding packet buffer 307 according to the guiding information of the packet; if the queue of the packet buffer 307 is nearly full, it is discarded.

The switching engine module 303 polls all packet buffer queues, which in this embodiment is divided into two cases:

if the queue is from the downlink network interface to the uplink network interface, the following conditions are met for forwarding: 1) the port send buffer is not full; 2) the queued packet counter is greater than zero; 3) obtaining a token generated by a code rate control module;

if the queue is not from the downlink network interface to the uplink network interface, the following conditions are met for forwarding: 1) the port send buffer is not full; 2) the queue packet counter is greater than zero.

The rate control module 308 is configured by the CPU module 304, and generates tokens for packet buffer queues from all downstream network interfaces to upstream network interfaces at programmable intervals to control the rate of upstream forwarding.

The CPU module 304 is mainly responsible for protocol processing with the node server, configuration of the address table 306, and configuration of the code rate control module 308.

Ethernet protocol conversion gateway：

As shown in fig. 4, the apparatus mainly includes a network interface module (a downlink network interface module 401 and an uplink network interface module 402), a switching engine module 403, a CPU module 404, a packet detection module 405, a rate control module 408, an address table 406, a packet buffer 407, a MAC adding module 409, and a MAC deleting module 410.

Wherein, the data packet coming from the downlink network interface module 401 enters the packet detection module 405; the packet detection module 405 detects whether the ethernet MACDA, the ethernet MACSA, the ethernet length horframe type, the video network destination address DA, the video network source address SA, the video network packet type, and the packet length of the packet meet the requirements, and if so, allocates a corresponding stream identifier (stream-id); then, the MAC deletion module 410 subtracts MACDA, MACSA, length horframetype (2byte) and enters the corresponding receiving buffer, otherwise, discards it;

the downlink network interface module 401 detects the transmission buffer of the port, and if there is a packet, acquires the ethernet MACDA of the corresponding terminal according to the video networking destination address DA of the packet, adds the ethernet MACDA of the terminal, the MACSA of the ethernet coordination gateway, and the ethernet length frame type, and transmits the packet.

The other modules in the ethernet protocol gateway function similarly to the access switch.

A terminal:

the system mainly comprises a network interface module, a service processing module and a CPU module; for example, the set-top box mainly comprises a network interface module, a video and audio coding and decoding engine module and a CPU module; the coding board mainly comprises a network interface module, a video and audio coding engine module and a CPU module; the memory mainly comprises a network interface module, a CPU module and a disk array module.

1.3 devices of the metropolitan area network part can be mainly classified into 2 types: node server, node exchanger, metropolitan area server. The node switch mainly comprises a network interface module, a switching engine module and a CPU module; the metropolitan area server mainly comprises a network interface module, a switching engine module and a CPU module.

2. Video networking packet definition

2.1 Access network packet definition

The data packet of the access network mainly comprises the following parts: destination Address (DA), Source Address (SA), reserved bytes, payload (pdu), CRC.

As shown in the following table, the data packet of the access network mainly includes the following parts:

DA

SA

Reserved

Payload

CRC

wherein:

the Destination Address (DA) is composed of 8 bytes (byte), the first byte represents the type of data packet (e.g. various protocol packets, multicast data packets, unicast data packets, etc.), there are at most 256 possibilities, the second byte to the sixth byte are metropolitan area network addresses, the seventh byte and the eighth byte are access network addresses:

the Source Address (SA) is also composed of 8 bytes (byte), defined as the same as the Destination Address (DA);

the reserved byte consists of 2 bytes;

the payload part has different lengths according to different types of data packets, and is 64 bytes if the data packet is a variety of protocol packets, and is 32+1024 or 1056 bytes if the data packet is a unicast data packet, of course, the length is not limited to the above 2 types;

the CRC consists of 4 bytes and is calculated in accordance with the standard ethernet CRC algorithm.

2.2 metropolitan area network packet definition

The topology of a metropolitan area network is a graph and there may be 2, or even more than 2, connections between two devices, i.e., there may be more than 2 connections between a node switch and a node server, a node switch and a node switch, and a node switch and a node server. However, the metro network address of the metro network device is unique, and in order to accurately describe the connection relationship between the metro network devices, parameters are introduced in the embodiment of the present application: a label to uniquely describe a metropolitan area network device.

In this specification, the definition of the label is similar to that of the label of MPLS (Multi-protocol label switching), and assuming that there are two connections between a device a and a device B, there are 2 labels for the packet from the device a to the device B, and 2 labels for the packet from the device B to the device a. The label is classified into an incoming label and an outgoing label, and assuming that the label (incoming label) of the packet entering the device a is 0x0000, the label (outgoing label) of the packet leaving the device a may become 0x 0001. The network access process of the metro network is a network access process under centralized control, that is, address allocation and label allocation of the metro network are both dominated by the metro server, and the node switch and the node server are both passively executed, which is different from label allocation of MPLS, and label allocation of MPLS is a result of mutual negotiation between the switch and the server.

As shown in the following table, the data packet of the metro network mainly includes the following parts:

DA

SA

Reserved

label (R)

Payload

CRC

Namely Destination Address (DA), Source Address (SA), Reserved byte (Reserved), tag, payload (pdu), CRC. The format of the tag may be defined by reference to the following: the tag is 32 bits with the upper 16 bits reserved and only the lower 16 bits used, and its position is between the reserved bytes and payload of the packet.

Based on the characteristics of the video networking, the service data transmission scheme provided by the embodiment of the application determines that the target working link is the first video networking link or the second video networking link through the video networking communication state, and can realize service switching when a certain video networking link fails, so that the reliability and survivability of the video networking service are improved.

As shown in fig. 8, which is a schematic view of a scenario applied in the embodiment of the present invention, the scenario may include: the system comprises a modem cat king, a modem tunnel and a modem cat. The following is a brief description of the terms involved in the embodiments of the present invention, as follows:

and (3) video networking: the video networking is a real-time national global full high-definition video network constructed based on the video networking technology.

And (3) viewing the cat: the internet of view cat is a product for expanding the application research and development of the internet of view platform in order to meet the application requirements of users of the internet of view to access non-internet of view (internet, IPTV private network, business private network in other fields, etc.), and is an access device for the internet of view to bear the existing network application based on the IP system.

The King of the Feiyan cat: the King of the Internet of things aims to meet the application requirements of users of the Internet of things for accessing non-Internet of things (Internet, IPTV private network, business private networks in other fields and the like), and expands a product developed by the application of an Internet of things platform, and the King of the Internet of things is convergence equipment for the Internet of things to bear the existing network application based on an IP system.

A video networking tunnel: a point-to-point video network tunnel is established by the modem and the modem, a user accesses the video network tunnel from one side of the tunnel, and accesses servers (such as the Internet, an IPTV private network and other field service private networks) from the other side of the tunnel to realize 'in-building IP and outside-building video networking'.

Video networking tunnel state: the video network tunnel establishment is divided into two processes, firstly, the cat and the cat king are connected to the server, then the cat starts to dial actively, the video network service is established with the cat king, the video network access is firstly powered on, the cat is connected to the network, and the video network tunnel state is divided into unconnected state and connected state.

Data connectivity detection: the data forwarding capability of the tunnel of the video network is detected, user data is simulated to be injected into the tunnel of the video network, whether the data can be forwarded normally or not is checked, and whether the connectivity is normal or not is checked.

Referring to fig. 5, a flowchart illustrating steps of a service data transmission method according to an embodiment of the present application is shown. The service data transmission method can be applied to a video networking system, the video networking system comprises a first terminal device and a second terminal device, and the first terminal device and the second terminal device are connected through a first video networking link and a second video networking link.

It should be noted that, in the embodiment of the present invention, primary and standby protection of the video networking tunnels is adopted, that is, two video networking tunnels are used to carry one user service, one video networking tunnel is a primary link (a first video networking link), and the other video networking tunnel is a standby link (a second video networking link). The first terminal device and the second terminal device may include a cat (also referred to as a cat device), a king (also referred to as a cat device), and other devices. When the first terminal equipment is the view ally oneself with cat, the second terminal equipment is the view ally oneself with cat king, and when the first terminal equipment is the view ally oneself with cat king, the second terminal equipment is the view ally oneself with cat.

The service data transmission method provided by this embodiment may include the following steps:

step 501, performing connectivity detection on the first video network link and the second video network link respectively to obtain the connectivity status of the first video network link and the second video network link.

And determining whether the data of the main link and the standby link are communicated or not by detecting the communication state of the main link and the standby link. Data connectivity detection can be carried out on the main link and the standby link, and according to the connectivity state of the main video network tunnel and the standby video network tunnel, the tunnel through which the user service is transmitted is determined, so that main and standby protection of the service is realized.

The connection state of the link comprises a connection state and a disconnection state.

Step 502, determining a target working link according to the connection state of the first video networking link and the second video networking link and the priority of the first video networking link and the second video networking link, wherein the target working link is the first video networking link or the second video networking link.

In this embodiment, it is assumed that the first link has higher priority than the second link, that is, the first link is a primary link, and the second link is a backup link.

Specifically, a tunnel (a first video network link or a second video network link) carrying a service may be switched according to the connection state of the main link and the standby link.

Step 503, the target working link is adopted to transmit the service data between the first terminal device and the second terminal device.

Specifically, a current working link may be obtained first, where the current working link is a video networking link performing service data transmission between a first terminal device and a second terminal device; when the current working link is different from the target working link, the current working link is switched to the target working link to transmit the service data between the first terminal device and the second terminal device. Fig. 9 is a schematic diagram illustrating switching between the main link and the standby link.

In the service data transmission method provided by this embodiment, the target working link is determined to be the first video network link or the second video network link through the video network connectivity state, and service switching can be realized when a certain video network link fails, so that the reliability and survivability of the video network service are improved.

The user data is carried through the tunnel of the video network, and the user has high requirement on the reliability of the network. The link level protection has a huge effect, one user service is borne through two video network tunnels, if a video network main link fails, the video network main link is switched to a standby link, and the main and standby switching is realized in a short time. In the using process of a client, link failure may be caused by factors such as construction, weather and operator link failure, and if the client uses only one link as service bearing, the occurrence of the failure will directly affect the use of the client, which is unacceptable to departments such as banks or governments. If the service of the customer is composed of two completely different links, the two links can select different operators, the physical links of the two links are different, and the operators are different, so that at least one link is guaranteed to be available under some conditions, the normal use of the customer is not influenced by the fault of one link, and time is also strived for checking and repairing the fault of the link.

In an optional implementation manner, referring to fig. 6, in step 501, specifically, the method may include:

step 601, the first terminal device generates a first message, where the first message includes a link identifier, and the link identifier corresponds to the first video network link or the second video network link.

Step 602, the first terminal device sends a first message to the second terminal device through the video networking link corresponding to the link identifier.

Step 603, if the second terminal device receives the first message sent by the first terminal device within the preset duration, the link of the video network corresponding to the link identifier is in a connection state.

Step 604, if the second terminal device does not receive the first message sent by the first terminal device within the preset duration, the link of the video network corresponding to the link identifier is in a disconnected state.

Supposing that the modem interconnection device needs to send a connectivity detection message, the message can simulate a user message to be sent to a network interconnection tunnel, is packaged into a network interconnection message corresponding to the tunnel, is sent to a server, and is forwarded to the modem interconnection device by the server.

The method comprises the steps of constructing a connectivity detection message, specifying a characteristic field for the message, normally forwarding the normal service message in order to distinguish the message from the normal service message, and sending the detection message to a Central Processing Unit (CPU), wherein the detection message cannot influence the normal service message forwarding and can also play a role in detecting the data forwarding connectivity of the video network tunnel. A rule is also required to be set on the modem equipment and modem king equipment to ensure that the connectivity detection message is sent to the CPU and the service data message of the user is still forwarded normally.

The video networking tunnel uses a video telephone technology provided by the video networking, and after the video networking and the King of the video networking establish the video networking tunnel, the video networking tunnel can forward a video service message of a message type 2002 and also can forward a voice message of a message type 2001. The two messages are normally established depending on the video telephone service connection, and for a server, whether the two messages can be forwarded or not is directly associated with the connection establishment of the video networking tunnel, in other words, the 2001 message cannot be passed, so the 2002 message cannot be forwarded definitely, and when the 2001 message and the 2002 message cannot be forwarded, the video networking tunnel is not in a connected state definitely, so in the invention, the problem that the state of a state machine of a video networking tunnel protocol is inconsistent with the actual state can be solved by taking the 2001 message as a detection message and taking the 2002 message as a data forwarding message.

In this embodiment, the generation of the first message by the cat viewing may include: the video network responds to the input operation of the user and generates a first message, and the first message can comprise a tunnel identifier. In the embodiment of the present invention, the first packet may also be understood as a 2001 packet. The second terminal device includes a plurality of virtual terminals thereon, and the tunnel identifier may be a virtual terminal identifier on the second terminal device.

If the first message is received by the second terminal equipment within the preset time length, the second terminal equipment determines that the video networking link corresponding to the link identification is in a connection state; if the first message is not received by the second terminal device within the preset duration, the second terminal device determines that the video networking link corresponding to the link identifier is in a disconnected state, and the first terminal device and the second terminal device can be reinitialized. It should be noted that the preset duration here can be flexibly adjusted according to actual requirements, and is not specifically limited here. For example, the preset time duration may be 5 transmission periods set by a timer for the Fei cat/Fei cat King.

In the embodiment of the invention, the cat sight transmits 2001 a message, fills in a link identifier, transmits the message into a corresponding tunnel, and a server receives the detection message (2011 message) and transmits the message to the cat sight king through a forwarding table item. Relevant rules of 2001 messages are set up on the King of the Union cat, and the 2001 messages are sent to the CPU for processing when the field is detected. The opposite direction is also the same. Therefore, connectivity of the tunnel data forwarding of the video network is detected through the 2001 message.

In an optional implementation manner, when the priority of the first video network link is higher than the priority of the second video network link, referring to fig. 7, step 502 may specifically include:

step 701, when the first video networking link and the second video networking link are both in a connection state, determining that the first video networking link is a target working link.

Step 702, when the first video network link is in a connection state and the second video network link is in a disconnection state, determining that the first video network link is a target working link.

And 703, when the first video network link is in a disconnected state and the second video network link is in a connected state, determining that the second video network link is a target working link.

Step 704, when the first video network link and the second video network link are both in the disconnection state, determining that the first video network link is the target working link.

Specifically, the work path may be selected according to the rules as shown in table 1.

TABLE 1

	The main link is connected	The main link has been broken
			The standby link is connected	The main link being the working path	The standby link is a working path
The standby link has been disconnected	The main link being the working path	The main link being the working path

Fig. 10 is a flowchart illustrating a specific implementation manner of the service data transmission method provided in this embodiment.

In this embodiment, the active and standby two video networking tunnel links are added into one active and standby protection group. One of the tunnels is a primary link and one is a backup link. One service data of the client is bound to the primary link by default. The step 501 may be performed by the connectivity detection module, the step 502 may be performed by the active/standby protection module, and the step 503 may be performed by the service forwarding module.

Specifically, referring to fig. 11, the connectivity detection module continuously detects the link status and sends the status of the active/standby link to the active/standby protection module. The main and standby protection module selects a working link according to the states of the main and standby links. And judging the working link selected by the main/standby protection module and the link in which the current service is working, and if the working link and the current link are the same and do not need to be switched, informing the service module of switching if the working link and the current link are different. And the service forwarding module receives the working path switching message and executes service switching. The service data transmission method provided by the embodiment can realize the main/standby switching of the service, and improve the reliability and survivability of the service provided by the video network.

It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the embodiments are not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the embodiments. Further, those skilled in the art will also appreciate that the embodiments described in the specification are presently preferred and that no particular act is required of the embodiments of the application.

The service data transmission device provided by another embodiment of the present application may be applied to a video networking system, where the video networking system includes a first terminal device and a second terminal device, and the first terminal device and the second terminal device establish a connection through a first video networking link and a second video networking link.

Fig. 12 is a block diagram illustrating a structure of a service data transmission apparatus according to an embodiment of the present application. The service data transmission device of the embodiment of the application may include the following modules:

a detecting module 1201, configured to perform connectivity detection on the first and second video networking links, respectively, to obtain connectivity statuses of the first and second video networking links.

A determining module 1202 configured to determine a target working link according to the connectivity status of the first and second video networking links and the priorities of the first and second video networking links, the target working link being the first video networking link or the second video networking link.

A transmission module 1203, configured to transmit service data between the first terminal device and the second terminal device by using the target working link.

The service data transmission device provided by this embodiment determines that the target working link is the first video network link or the second video network link through the video network communication state, and can realize service switching when a certain video network link fails, thereby improving the reliability and survivability of the video network service.

In an optional implementation manner, the detecting module 901 is specifically configured to:

In an alternative implementation, when the priority of the first video networking link is higher than the priority of the second video networking link, the determining module 902 is specifically configured to:

In an optional implementation manner, the transmission module 903 is specifically configured to:

For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.

An embodiment of the present invention further provides an apparatus, including:

one or more processors; and

one or more machine-readable media having instructions stored thereon, which when executed by the one or more processors, cause the apparatus to perform one or more of the traffic data transmission methods according to embodiments of the present invention.

The embodiment of the present invention further provides a computer-readable storage medium, in which a stored computer program causes a processor to execute the service data transmission method according to the embodiment of the present invention.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

As will be appreciated by one of skill in the art, embodiments of the present application may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the true scope of the embodiments of the application.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. The term "comprising" is used to specify the presence of stated elements, but not necessarily the presence of stated elements, unless otherwise specified.

The service data transmission method, the service data transmission device, and the computer-readable storage medium provided by the present application are introduced in detail, and a specific example is applied in the present application to explain the principle and the implementation of the present application, and the description of the above embodiment is only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A service data transmission method is applied to a video networking system, the video networking system comprises a first terminal device and a second terminal device, and the first terminal device and the second terminal device establish connection through a first video networking link and a second video networking link, and the method comprises the following steps:

2. The method of claim 1, wherein the step of performing connectivity checks on the first and second video network links, respectively, comprises:

3. The method of claim 1, wherein the step of determining a target working link based on the connectivity status of the first and second video networking links and the priorities of the first and second video networking links when the priority of the first video networking link is higher than the priority of the second video networking link comprises:

4. The method of claim 1, wherein the step of transmitting the traffic data between the first terminal device and the second terminal device using the target working link comprises:

5. A service data transmission device is applied to a video network system, the video network system comprises a first terminal device and a second terminal device, the first terminal device and the second terminal device establish connection through a first video network link and a second video network link, and the device comprises:

6. The apparatus of claim 5, wherein the detection module is specifically configured to:

7. The apparatus of claim 5, wherein when the priority of the first video networking link is higher than the priority of the second video networking link, the determination module is specifically configured to:

8. The apparatus of claim 5, wherein the transmission module is specifically configured to:

9. An apparatus, comprising:

one or more processors; and

one or more machine readable media having instructions stored thereon, which when executed by the one or more processors, cause the apparatus to perform the traffic data transmission method of any of claims 1 to 4.

10. A computer-readable storage medium storing a computer program for causing a processor to execute the traffic data transmission method according to any one of claims 1 to 4.