CN110233872B - Data transmission method based on video network and video network terminal - Google Patents
Data transmission method based on video network and video network terminal Download PDFInfo
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- CN110233872B CN110233872B CN201910368607.8A CN201910368607A CN110233872B CN 110233872 B CN110233872 B CN 110233872B CN 201910368607 A CN201910368607 A CN 201910368607A CN 110233872 B CN110233872 B CN 110233872B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/141—Setup of application sessions
Abstract
The embodiment of the application provides a data transmission method based on a video network and a video network terminal. The method comprises the following steps: when a first video network terminal transmits a target data packet to a second video network terminal, the first video network terminal sequentially transmits a plurality of sub data packets to the second video network terminal through a video network server based on a data transmission mode of transparent transmission; further, after the first video network terminal receives a call transmission channel establishment success message sent by the video network server, the data transmission mode from the first video network terminal to the second video network terminal is switched from a transparent transmission mode to a mode of transmission through the call transmission channel so as to continue to transmit the target data packet. The second video network terminal is triggered to establish a call data transmission channel with high data throughput, and a transparent transmission mode with short transmission delay is combined with a call data transmission mode with high data throughput, so that the data transmission rate is improved.
Description
Technical Field
The present application relates to the field of video networking technologies, and in particular, to a data transmission method and a video networking terminal based on video networking.
Background
With the rapid development of the video networking, video conferences, video teaching and the like based on the video networking are widely popularized in the aspects of life, work, learning and the like of users.
When data transmission is performed between terminals of the video network, a call data transmission mode with high transmission throughput is used in the prior art. However, with this transmission method, the video networking terminal is also required to perform initialization processing, which results in long transmission delay and thus low data transmission efficiency.
Disclosure of Invention
In view of the above problems, embodiments of the present application are proposed to provide a data transmission method based on a video network and a video network terminal that overcome or at least partially solve the above problems.
In a first aspect, an embodiment of the present application discloses a data transmission method based on a video network, where the method includes:
the first video network terminal transmits a target data packet to the second video network terminal, wherein:
the first video network terminal sequentially transmits a plurality of sub data packets to the second video network terminal through a video network server based on a transparent transmission data transmission mode; the plurality of sub-data packets belong to the target data packet, the plurality of sub-data packets comprise a first sub-data packet, the first sub-data packet carries a call channel active establishment request, and the call channel active establishment request is used for triggering the second video network terminal to send a call channel establishment request to the video network server so as to establish a call transmission channel between the second video network terminal and the first video network terminal;
and after the first video network terminal receives a call transmission channel establishment success message sent by the video network server, switching the data transmission mode from the first video network terminal to the second video network terminal from a transparent transmission mode to a mode of transmitting through the call transmission channel so as to continuously transmit the target data packet.
Optionally, before the first video networking terminal sequentially transmits the plurality of sub-packets to the second video networking terminal via the video networking server based on a transparent transmission data transmission manner, the method further includes:
the first video network terminal judges whether a call transmission channel is established between the first video network terminal and the second video network terminal;
if the target data packet is established, transmitting the target data packet through the call transmission channel;
and if the data transmission mode is not established, the first video network terminal sequentially transmits a plurality of sub data packets to the second video network terminal through the video network server based on the transparent transmission data transmission mode.
Optionally, the first video networking terminal sequentially transmits a plurality of sub-packets to the second video networking terminal via a video networking server based on a transparent transmission data transmission manner, where the plurality of sub-packets include a first sub-packet, and the method includes:
the first video network terminal divides the target data packet into a plurality of sub data packets with set sizes and numbers the sub data packets in sequence;
and sequentially transmitting the numbers of the sub-packets to the second video network terminal from small to large, wherein the first sub-packet is the first sub-packet transmitted from the first video network terminal.
Optionally, the method further comprises: if the first video network terminal does not receive the call transmission channel establishment success message sent by the video network server within the set time, adding a call channel active establishment request in a next sub data packet to be transparently transmitted so as to trigger the second video network terminal to send the call channel establishment request to the video network server.
In a second aspect, an embodiment of the present application discloses a video networking terminal, including:
the transparent transmission module is used for sequentially transmitting a plurality of sub data packets to the second video network terminal by the first video network terminal through the video network server based on a transparent transmission data transmission mode when the first video network terminal transmits a target data packet to the second video network terminal; the plurality of sub-data packets belong to the target data packet, the plurality of sub-data packets comprise a first sub-data packet, the first sub-data packet carries a call channel active establishment request, and the call channel active establishment request is used for triggering the second video network terminal to send a call channel establishment request to the video network server so as to establish a call transmission channel between the second video network terminal and the first video network terminal;
and the call channel transmission module is used for switching the data transmission mode from the first video network terminal to the second video network terminal from a transparent transmission mode to a mode of transmitting through the call transmission channel so as to continuously transmit the target data packet after the first video network terminal receives the message that the call transmission channel is successfully established and sent by the video network server.
Optionally, the video networking terminal further includes: the transmission mode judging module is used for judging whether a call transmission channel is established between the first video network terminal and the second video network terminal or not before the first video network terminal sequentially transmits a plurality of sub data packets to the second video network terminal through a video network server based on a data transmission mode of transparent transmission; if the target data packet is established, triggering the call transmission module to transmit the target data packet; and if not, triggering the transparent transmission module to transmit a plurality of sub data packets.
Optionally, the transparent transmission module is specifically configured to: the first video network terminal divides the target data packet into a plurality of sub data packets with set sizes and numbers the sub data packets in sequence; and sequentially transmitting the numbers of the sub-packets to the second video network terminal from small to large, wherein the first sub-packet is the first sub-packet transmitted from the first video network terminal.
Optionally, the call channel transmission module is further configured to: if the first video network terminal does not receive the call transmission channel establishment success message sent by the video network server within the set time, adding a call channel active establishment request in a next sub data packet to be transparently transmitted so as to trigger the second video network terminal to send the call channel establishment request to the video network server.
In a third aspect, an embodiment of the present application further discloses a computer device, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the processor executes the computer program, the method of any one of the first aspect is implemented.
In a fourth aspect, an embodiment of the present application further discloses a computer-readable storage medium, where a computer program for executing any one of the methods in the first aspect is stored in the computer-readable storage medium.
According to the data transmission method based on the video network, when a first video network terminal transmits a target data packet to a second video network terminal, firstly, the first video network terminal sequentially transmits a plurality of sub data packets to the second video network terminal through a video network server based on a data transmission mode of transparent transmission; the plurality of sub-data packets belong to the target data packet, the plurality of sub-data packets comprise a first sub-data packet, the first sub-data packet carries a call channel active establishment request, and the call channel active establishment request is used for triggering the second video network terminal to send a call channel establishment request to the video network server so as to establish a call transmission channel between the second video network terminal and the first video network terminal; further, after the first video network terminal receives a call transmission channel establishment success message sent by the video network server, the data transmission mode from the first video network terminal to the second video network terminal is switched from a transparent transmission mode to a mode of transmission through the call transmission channel so as to continue to transmit the target data packet. According to the method, in the process that the first video network terminal transmits data to the second video network terminal, the second video network terminal is triggered to establish the call data transmission channel with high data throughput, the transparent transmission mode with short transmission delay is combined with the call data transmission mode with high data throughput, and the data transmission rate is greatly improved.
Drawings
Fig. 1 is a schematic networking diagram of a video network provided in an embodiment of the present application;
fig. 2 is a schematic hardware structure diagram of a node server according to an embodiment of the present application;
fig. 3 is a schematic hardware structure diagram of an access switch according to an embodiment of the present application;
fig. 4 is a schematic hardware structure diagram of an ethernet protocol conversion gateway according to an embodiment of the present application;
fig. 5 is a flowchart illustrating steps of a data transmission method based on a video network according to an embodiment of the present application;
fig. 6 is a block diagram of a video network terminal 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 (Packet Switching) or network Circuit Switching (Circuit Switching), the internet of vision technology employs network Packet Switching to satisfy the demand of Streaming (translated into Streaming, and continuous broadcasting, which is a data transmission technology, converting received data into a stable and continuous stream, and continuously transmitting the stream, so that the sound heard by the user or the image seen by the user is very smooth, and the user can start browsing on the screen before the whole data is transmitted). 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 (Server Technology)
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 (Network Security Technology)
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 (Service Innovation 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 infinite new service innovation.
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 (circled part), 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.
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 (downstream network interface module 301, upstream network interface module 302), the switching engine module 303, and the CPU module 304 are mainly included.
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, 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) and obtaining the token generated by the 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 208 is configured by the CPU module 204, 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 MAC DA, the ethernet MAC SA, the ethernet length or frame 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 MAC DA, MAC SA, length or frame type (2byte) and enters the corresponding receiving buffer, otherwise, discards it;
the downlink network interface module 401 detects the sending buffer of the port, and if there is a packet, obtains the ethernet MAC DA of the corresponding terminal according to the video networking destination address DA of the packet, adds the ethernet MAC DA of the terminal, the MAC SA of the ethernet coordination gateway, and the ethernet length or frame type, and sends 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 3 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 |
the Destination Address (DA) is composed of 8 bytes (byte), the first byte represents the type of the 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, and 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 types of different datagrams, and is 64 bytes if the type of the datagram is a variety of protocol packets, or is 1056 bytes if the type of the datagram is a unicast packet, but 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 a Label of Multi-Protocol Label switching (MPLS), and assuming that there are two connections between a device a and a device B, there are 2 labels for a packet from the device a to the device B, and 2 labels for a 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.
The transparent transmission in the embodiment of the application is a data transmission mode based on the video networking. The transmission mode has the characteristics of data transmission without establishing connection in advance and low transmission delay. However, this transmission method has a limitation that the amount of data that can be transmitted in the same time is far lower than the call data transmission method.
The call data transmission mode in the embodiment of the application is a high-speed data transmission mode supported by video networking, and needs initialization, so that the delay is high, but the data throughput is high.
Fig. 5 shows a data transmission method based on a video network, which is applicable to a video network terminal, and when a first video network terminal transmits a target data packet to a second video network terminal, the method may include the following steps:
step 501: the first video network terminal sequentially transmits a plurality of sub data packets to the second video network terminal through a video network server based on a transparent transmission data transmission mode; the plurality of sub-data packets belong to the target data packet, the plurality of sub-data packets include a first sub-data packet, the first sub-data packet carries a call channel active establishment request, and the call channel active establishment request is used for triggering the second video network terminal to send a call channel establishment request to the video network server so as to establish a call transmission channel between the second video network terminal and the first video network terminal.
In a possible implementation manner, before the first video network terminal sequentially transmits the plurality of sub data packets to the second video network terminal via the video network server based on the transparent transmission data transmission manner, the method further includes:
the first video network terminal judges whether a call transmission channel is established between the first video network terminal and the second video network terminal; if the target data packet is established, transmitting the target data packet through the call transmission channel; and if the data transmission mode is not established, the first video network terminal sequentially transmits a plurality of sub data packets to the second video network terminal through the video network server based on the transparent transmission data transmission mode.
In step 501, the first video network terminal divides the target data packet into a plurality of sub data packets with a set size, and numbers the plurality of sub data packets in sequence; and sequentially transmitting the numbers of the sub-packets to the second video network terminal from small to large, wherein the first sub-packet is the first sub-packet transmitted from the first video network terminal. The purpose is to send a call channel active establishment request to a second video network terminal as soon as possible, so that the second video network terminal sends the call channel establishment request to the video network server to establish a call transmission channel between the second video network terminal and the first video network terminal.
In a possible implementation manner, if the first video network terminal does not receive the call transmission channel establishment success message sent by the video network server within a set time, a call channel active establishment request is added to a next sub-packet to be transparently transmitted, so as to trigger the second video network terminal to send a call channel establishment request to the video network server.
For example, if the first sub-packet is sent out, a call transmission channel establishment success message returned by the video network server is not received within a set time, and at this time, a data packet towards the second video network terminal is already sent to the tenth sub-packet, a call channel active establishment request is added to the eleventh sub-packet, and the eleventh sub-packet is sent to the second video network terminal, so as to trigger the second video network terminal to send a call channel establishment request to the video network server.
Step 502: and after the first video network terminal receives a call transmission channel establishment success message sent by the video network server, switching the data transmission mode from the first video network terminal to the second video network terminal from a transparent transmission mode to a mode of transmitting through the call transmission channel so as to continuously transmit the target data packet.
For example, if the first video network terminal receives the call transmission channel establishment success message sent by the video network, it is described that the call transmission channel between the second video network terminal and the first video network terminal is already established. When the call transmission channel establishment success message is received, the first video network terminal already sends the sub data packet in the target data packet to the fourth sub data packet, and after the fourth sub data packet is sent, the first video network terminal switches the data transmission mode to the mode of transmitting through the call transmission channel, namely, the fifth sub data packet and the following sub data packets are transmitted through the call transmission channel until the target data packet is transmitted.
Briefly, a is used to represent a first video network terminal, and B is used to represent a second video network terminal. When A sends data to B by using a transparent transmission data transmission mode, a segment of data with specific characteristics is added in the data to inform B: "please call me". Further, B calls a call interface to call, namely B actively establishes a 'call data transmission channel' with A. (ii) a The video network server completes the channel establishing process, and after the channel is successfully established, the video network server informs A and B by sending data packets with specific characteristics. And when the transparent transmission mode is switched to the calling mode, the data transmission does not have any pause. That is, a completes requesting B to call itself while transmitting data using pass-through. The whole process of establishing the call transmission channel does not block the transmission of data from the A to the B by using the transparent transmission mode.
In one implementation, the video network terminal device may be a Set Top Box (STB), generally called a Set Top Box or Set Top Box, which is a device for connecting a tv Set and an external signal source, and converts a compressed digital signal into tv content and displays the tv content on the tv Set. Generally, the set-top box may be connected to a camera and a microphone for collecting multimedia data such as video data and audio data, and may also be connected to a television for playing multimedia data such as video data and audio data.
Therefore, in practical applications, a user can trigger the video network terminal to generate a control service application instruction through some operations in a menu (gtml) file, such as dialing a user number of a set top box of an opposite terminal, and send the control service application instruction to the video network server.
The video network terminal device may further include an external interface, such as a USB interface, an HDMI _ OUTx2 interface, an HDMI _ IN interface, a dongle interface, an RCA (Radio Corporation of American, RC interface), an AV interface, and the like.
In summary, according to the data transmission method based on the video network provided by the embodiment of the application, in the process of transmitting data from the first video network terminal to the second video network terminal, the second video network terminal is triggered to establish the call data transmission channel with high data throughput, and the transparent transmission mode with short transmission delay is combined with the call data transmission mode with high data throughput, so that the data transmission rate is greatly improved.
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.
Based on the same technical concept, referring to fig. 6, a structural block diagram of a video network terminal provided in the embodiment of the present application is shown, where the apparatus may be applied to a video network, and specifically may include the following modules:
the transparent transmission module 601 is used for sequentially transmitting a plurality of sub data packets to the second video network terminal by the first video network terminal through the video network server based on a transparent transmission data transmission mode when the first video network terminal transmits a target data packet to the second video network terminal; the plurality of sub-data packets belong to the target data packet, the plurality of sub-data packets comprise a first sub-data packet, the first sub-data packet carries a call channel active establishment request, and the call channel active establishment request is used for triggering the second video network terminal to send a call channel establishment request to the video network server so as to establish a call transmission channel between the second video network terminal and the first video network terminal;
a call channel transmission module 602, configured to switch, after the first video network terminal receives the message that the call transmission channel sent by the video network server is successfully established, a data transmission mode from the first video network terminal to the second video network terminal from a transparent transmission mode to a mode of transmission through the call transmission channel so as to continue to transmit the target data packet.
In one possible implementation, the video network terminal further includes: the transmission mode judging module is used for judging whether a call transmission channel is established between the first video network terminal and the second video network terminal or not before the first video network terminal sequentially transmits a plurality of sub data packets to the second video network terminal through a video network server based on a data transmission mode of transparent transmission; if the target data packet is established, triggering the call transmission module to transmit the target data packet; and if not, triggering the transparent transmission module to transmit a plurality of sub data packets.
In a possible implementation manner, the transparent transmission module 601 is specifically configured to:
the first video network terminal divides the target data packet into a plurality of sub data packets with set sizes and numbers the sub data packets in sequence; and sequentially transmitting the numbers of the sub-packets to the second video network terminal from small to large, wherein the first sub-packet is the first sub-packet transmitted from the first video network terminal.
In a possible implementation, the call channel transmission module 602 is further configured to:
if the first video network terminal does not receive the call transmission channel establishment success message sent by the video network server within the set time, adding a call channel active establishment request in a next sub data packet to be transparently transmitted so as to trigger the second video network terminal to send the call channel establishment request to the video network server.
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.
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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The data transmission method based on the video network and the video network terminal are provided by the application. The detailed description is given, and the principle and the implementation of the present application are explained by applying specific examples, and the above description of the embodiments is only used to help understanding 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 (8)
1. A data transmission method based on video network is characterized by comprising the following steps:
the first video network terminal transmits a target data packet to the second video network terminal, wherein:
the first video network terminal sequentially transmits a plurality of sub data packets to the second video network terminal through a video network server based on a transparent transmission data transmission mode; the plurality of sub-data packets belong to the target data packet, the plurality of sub-data packets comprise a first sub-data packet, the first sub-data packet carries a call channel active establishment request, and the call channel active establishment request is used for triggering the second video network terminal to send a call channel establishment request to the video network server so as to establish a call transmission channel between the second video network terminal and the first video network terminal;
after the first video network terminal receives a call transmission channel establishment success message sent by the video network server, switching a data transmission mode from the first video network terminal to the second video network terminal from a transparent transmission mode to a mode of transmission through the call transmission channel so as to continuously transmit the target data packet;
the first video network terminal sequentially transmits a plurality of sub data packets to the second video network terminal through a video network server based on a transparent transmission data transmission mode, wherein the plurality of sub data packets comprise a first sub data packet, and the method comprises the following steps:
the first video network terminal divides the target data packet into a plurality of sub data packets with set sizes and numbers the sub data packets in sequence;
and sequentially transmitting the numbers of the sub-packets to the second video network terminal from small to large, wherein the first sub-packet is the first sub-packet transmitted from the first video network terminal.
2. The method of claim 1, wherein prior to the first video networking terminal sequentially transmitting the plurality of sub-packets to the second video networking terminal via a video networking server based on a transparent data transmission manner, the method further comprises:
the first video network terminal judges whether a call transmission channel is established between the first video network terminal and the second video network terminal;
if the target data packet is established, transmitting the target data packet through the call transmission channel;
and if the data transmission mode is not established, the first video network terminal sequentially transmits a plurality of sub data packets to the second video network terminal through the video network server based on the transparent transmission data transmission mode.
3. The method of claim 1, wherein the method further comprises:
if the first video network terminal does not receive the call transmission channel establishment success message sent by the video network server within the set time, adding a call channel active establishment request in a next sub data packet to be transparently transmitted so as to trigger the second video network terminal to send the call channel establishment request to the video network server.
4. A video networking terminal, characterized in that the video networking terminal comprises:
the transparent transmission module is used for sequentially transmitting a plurality of sub data packets to the second video network terminal by the first video network terminal through the video network server based on a transparent transmission data transmission mode when the first video network terminal transmits a target data packet to the second video network terminal; the plurality of sub-data packets belong to the target data packet, the plurality of sub-data packets comprise a first sub-data packet, the first sub-data packet carries a call channel active establishment request, and the call channel active establishment request is used for triggering the second video network terminal to send a call channel establishment request to the video network server so as to establish a call transmission channel between the second video network terminal and the first video network terminal;
the call channel transmission module is used for switching the data transmission mode from the first video network terminal to the second video network terminal from a transparent transmission mode to a mode of transmitting through the call transmission channel so as to continuously transmit the target data packet after the first video network terminal receives a call transmission channel establishment success message sent by the video network server;
the transparent transmission module is specifically used for:
the first video network terminal divides the target data packet into a plurality of sub data packets with set sizes and numbers the sub data packets in sequence;
and sequentially transmitting the numbers of the sub-packets to the second video network terminal from small to large, wherein the first sub-packet is the first sub-packet transmitted from the first video network terminal.
5. The video networking terminal of claim 4, wherein said video networking terminal further comprises:
the transmission mode judging module is used for judging whether a call transmission channel is established between the first video network terminal and the second video network terminal or not before the first video network terminal sequentially transmits a plurality of sub data packets to the second video network terminal through a video network server based on a data transmission mode of transparent transmission; if the target data packet is established, triggering the call transmission module to transmit the target data packet; and if not, triggering the transparent transmission module to transmit a plurality of sub data packets.
6. The video networking terminal of claim 4, wherein said call path transmission module is further configured to:
if the first video network terminal does not receive the call transmission channel establishment success message sent by the video network server within the set time, adding a call channel active establishment request in a next sub data packet to be transparently transmitted so as to trigger the second video network terminal to send the call channel establishment request to the video network server.
7. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of any one of claims 1 to 3 when executing the computer program.
8. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for executing the method of any one of claims 1 to 3.
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