CN109586851B - Data transmission method and device based on video network - Google Patents
Data transmission method and device based on video network Download PDFInfo
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- CN109586851B CN109586851B CN201811436582.2A CN201811436582A CN109586851B CN 109586851 B CN109586851 B CN 109586851B CN 201811436582 A CN201811436582 A CN 201811436582A CN 109586851 B CN109586851 B CN 109586851B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention relates to the technical field of video networking, in particular to a data transmission method and device based on video networking. The data transmission method based on the video network comprises the following steps: determining whether a message reply message sent by the video network gateway is received, wherein the message reply message is a feedback message returned by the video network gateway based on the received video network protocol message group information; when receiving the reply information sent by the video network gateway, determining whether the corresponding video network protocol message group information is complete information or not based on the reply information; when the message group information of the video networking protocol is complete information, new message group information of the video networking protocol is sent to a video networking gateway; and when the message group information of the video networking protocol is incomplete, sending missing message group information to the video networking gateway. The invention applies the characteristics of the video network, and sends the corresponding information through the judgment result of the integrity of the video network protocol message group information corresponding to the reply information, thereby ensuring the integrity of data transmission and avoiding data loss.
Description
Technical Field
The invention relates to the technical field of video networking, in particular to a data transmission method and a data transmission device based on the video networking.
Background
With the rapid development of network technologies, data transmission based on networks is also becoming more and more popular.
When data transmission is performed, the existing transmission mode is based on the internet, a typical network seven-layer protocol is adopted for data transmission, but a closed system cannot be formed, and the transmission time is greatly influenced by the network environment, so that the transmitted information cannot be protected, and the information is extremely easy to steal.
With the advent of video networking technology, people gradually enter their lives with their safe and stable transmission characteristics.
However, in the video network, when non-multimedia data (video data and audio data) is transmitted, there is no dedicated protocol and channel, and the integrity of the non-multimedia data transmission cannot be guaranteed, so that part of the data is lost, and the use of part of services of the video network is further affected.
Disclosure of Invention
In view of the above problems, embodiments of the present invention are proposed to provide a data transmission method based on a video network and a corresponding data transmission device based on a video network, which overcome or at least partially solve the above problems.
In order to solve the above problem, an embodiment of the present invention discloses a data transmission method based on a video network, where the method is applied to a video network, the video network includes a video network gateway, and the method includes:
determining whether a message reply message sent by the video network gateway is received, wherein the message reply message is a feedback message returned by the video network gateway based on the received video network protocol message group information;
when receiving the reply information sent by the video network gateway, determining whether the corresponding video network protocol message group information is complete information or not based on the reply information;
when the information of the video networking protocol message group is complete information, sending new information of the video networking protocol message group to the video networking gateway;
and when the message group information of the video networking protocol is incomplete, sending missing message group information to the video networking gateway.
In one possible implementation, the method further includes:
when the reply message sent by the video network gateway is not received, determining whether to send new video network protocol message group information to the video network gateway;
and when determining not to send new video networking protocol message group information to the video networking gateway, executing processing for determining whether the reply information sent by the video networking gateway is received.
In one possible implementation manner, before determining whether the reply message sent by the video networking gateway is received, the method further includes:
establishing a data communication connection with the video networking gateway;
the establishing of the data communication connection with the video networking gateway comprises the following steps:
when supporting data interaction service, sending a data exchange request to the video network gateway;
and receiving a data exchange response sent by the video networking gateway, and establishing data communication connection with the video networking gateway based on the data exchange response.
The embodiment of the invention also discloses a data transmission method based on the video network, which is applied to the video network, wherein the video network comprises a video network terminal, and the method comprises the following steps:
sending a reply message to the video network terminal, wherein the reply message is a feedback message returned based on the received video network protocol message group message sent by the video network terminal;
when the video network terminal receives the reply information, receiving new video network protocol message group information or missing message group information sent by the video network terminal;
generating corresponding specific reply information based on the new video networking protocol message group information or the missing message group information;
and executing the processing of sending the reply information to the video network terminal based on the specific reply information.
In one possible implementation manner, before sending the reply information to the terminal of the video network, the method further includes:
establishing data communication connection with the video networking terminal;
the establishing of the data communication connection with the video networking terminal comprises the following steps:
when the video network terminal supports data interaction service, receiving a data exchange request sent by the video network terminal;
and sending a data exchange response to the video networking terminal so that the video networking terminal establishes a data communication connection based on the data exchange response.
The embodiment of the invention also discloses a data transmission device based on the video network, which is applied to the video network and comprises the following components:
the device comprises a determining unit, a sending unit and a receiving unit, wherein the determining unit is used for determining whether the message reply information sent by the video networking gateway is received or not, and the message reply information is feedback information returned by the video networking gateway based on the received video networking protocol message group information;
the first processing unit is used for determining whether corresponding video networking protocol message group information is complete information or not based on the reply information when the reply information sent by the video networking gateway is received;
the sending unit is used for sending new video networking protocol message group information to the video networking gateway when the video networking protocol message group information is complete information; and the message group missing information is sent to the video networking gateway when the video networking protocol message group information is incomplete information.
In one possible implementation manner, the first processing unit is configured to determine whether to send new packet group information of the video networking protocol to the video networking gateway when receiving no reply message sent by the video networking gateway;
and when determining that the new video networking protocol message group information is not sent to the video networking gateway, executing the processing that the determining unit determines whether the reply information sent by the video networking gateway is received.
In one possible implementation, the method further includes:
the second processing unit is used for establishing data communication connection with the video networking gateway;
the second processing unit is specifically configured to send a data exchange request to the video networking gateway when supporting a data interaction service; and receiving a data exchange response sent by the video networking gateway, and establishing data communication connection with the video networking gateway based on the data exchange response.
The embodiment of the invention also discloses a data transmission device based on the video network, which is applied to the video network and comprises the following components:
the sending unit is used for sending reply information to the video networking terminal, wherein the reply information is feedback information returned based on the received video networking protocol message group information sent by the video networking terminal;
the receiving unit is used for receiving new video networking protocol message group information or missing message group information sent by the video networking terminal when the video networking terminal receives the reply information;
the first processing unit is used for generating corresponding specific palindrome information based on the new video networking protocol message group information or the missing message group information;
and executing the processing of sending the reply information to the video network terminal by the sending unit based on the specific reply information.
In one possible implementation, the method further includes:
the second processing unit is used for establishing data communication connection with the video networking terminal;
the second processing unit is specifically configured to receive a data exchange request sent by the video networking terminal when the video networking terminal supports a data interaction service; and sending a data exchange response to the video networking terminal so that the video networking terminal establishes a data communication connection based on the data exchange response.
The embodiment of the invention has the following advantages:
the embodiment of the invention applies the characteristics of the video network, judges the integrity of the video network protocol message group information corresponding to the reply information sent by the video network gateway, and sends the corresponding information based on the judgment result, thereby ensuring the integrity of data transmission and avoiding data loss.
Drawings
FIG. 1 is a schematic networking diagram of a video network of the present invention;
FIG. 2 is a schematic diagram of a hardware architecture of a node server according to the present invention;
fig. 3 is a schematic diagram of a hardware structure of an access switch of the present invention;
fig. 4 is a schematic diagram of a hardware structure of an ethernet protocol conversion gateway according to the present invention;
FIG. 5 is a flowchart illustrating the steps of an embodiment of a method for data transmission over a video network according to the present invention;
FIG. 6 is a block diagram of an embodiment of a data transmission device based on video network according to the present invention;
fig. 7 is a block diagram of another embodiment of the data transmission device based on the video network according to the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
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 invention, 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 Packet Switching is adopted by the technology of the video networking 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 (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 (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.
Video networking device classification
1.1 devices in the video network of the embodiment of the present invention can be mainly classified into 3 types: servers, switches (including video networking 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 video networking 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 data packet coming from the CPU module 204 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 of the present invention 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 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 destination address DA of the packet, adds the ethernet MAC DA of the terminal, the MAC SA of the ethernet protocol 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 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 the data packet (such as various protocol packets, multicast data packets, unicast data packets, etc.), there are 256 possibilities at most, 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 different types of datagrams, and is 64 bytes if the datagram is various types of protocol packets, and is 32+1024 or 1056 bytes if the datagram is a unicast 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 invention: 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 Switch), and assuming that there are two connections between the device a and the 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 network, one of the core concepts of the embodiment of the invention is provided, the integrity of the transmission of the video network protocol message group information between the video network terminal and the video network gateway is determined based on the palindrome information through the data communication connection constructed by the video network terminal and the video network gateway according to the protocol of the video network.
Referring to fig. 5, a flowchart illustrating steps of an embodiment of a data transmission method based on a video network according to the present invention is shown, where the method may be applied to the video network, and specifically may include the following steps:
the reply information is feedback information returned by the video network gateway based on the received video network protocol message group information.
In a specific implementation, the video networking terminal may be a set-top box (STB), commonly referred to as a set-top box or set-top box, which is a device that connects a television set to an external signal source and that converts compressed digital signals into television content for display on the television 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.
For the embodiment of the invention, before determining whether the reply message sent by the video network gateway is received, the method also comprises a process of establishing data communication connection between the video network terminal and the video network gateway, wherein the process of establishing data communication connection comprises the following steps:
step S1, when supporting data interactive service, sending data exchange request to the video network gateway;
for the embodiment of the present invention, the processing specifically includes:
step S11, the video network gateway sends a data exchange service request to the video network terminal;
specifically, the video network gateway confirms whether the video network terminal supports the data exchange service function by sending a request message to the video network terminal.
Step S12, the terminal of the video network determines whether to support the data exchange service.
In this step, when the video network terminal supports the data exchange service, the process goes directly to step S13, otherwise, the service is terminated by sending a service termination instruction to the video network gateway.
And step S13, the video network terminal sends a data exchange request to the video network gateway.
Step S14, the video network gateway determines the data exchange request sent by the video network terminal, and determines whether the data exchange request is supported.
In this step, when the video network gateway supports data exchange, the process goes directly to step S2, otherwise, the service is terminated by sending a service termination instruction to the video network terminal.
And step S2, the video network terminal receives the data exchange response sent by the video network gateway, and establishes data communication connection with the video network gateway based on the data exchange response.
In the video network, when the video network terminal performs message interaction with the video network gateway, the message interaction can be performed through a service interaction message generated by a protocol, and the specification of the service interaction message can be shown in the following table:
in the embodiment of the invention, when the reply message sent by the video network gateway is received, go to step 502; otherwise go to step 504.
in the video network, the video network gateway can generate the reply information through a protocol, and the format of the generated reply information can be shown as the following table:
in this practical application, the video network is a network with a centralized control function, and includes a main control server and a lower level network device, where the lower level network device includes a terminal, and one of the core concepts of the video network is that a table is configured for a downlink communication link of a current service by notifying a switching device by the main control server, and then a data packet is transmitted based on the configured table.
Namely, the communication method in the video network includes:
the main control server configures a downlink communication link of the current service;
and transmitting the data packet of the current service sent by the source terminal to the target terminal according to the downlink communication link.
In the embodiment of the present invention, configuring the downlink communication link of the current service includes: informing the switching equipment related to the downlink communication link of the current service to allocate a table;
further, transmitting according to the downlink communication link includes: the configured table is consulted, and the switching equipment transmits the received data packet through the corresponding port.
In particular implementations, the services include unicast communication services and multicast communication services. Namely, whether multicast communication or unicast communication, the core concept of the table matching-table can be adopted to realize communication in the video network.
As described above, the video network includes an access network portion, in which the master server is a node server, and the lower-level network device includes an access switch and a terminal.
For the unicast communication service in the access network, the step of configuring the downlink communication link of the current service by the master server may include the following steps:
in the substep S11, the main control server obtains downlink communication link information of the current service according to the service request protocol packet initiated by the source terminal, wherein the downlink communication link information includes downlink communication port information of the main control server and the access switch participating in the current service;
in the substep S12, the main control server sets a downlink port to which a packet of the current service is directed in a packet address table inside the main control server according to the downlink communication port information of the control server; sending a port configuration command to a corresponding access switch according to the downlink communication port information of the access switch;
in sub-step S13, the access switch sets the downstream port to which the packet of the current service is directed in its internal packet address table according to the port configuration command.
For the multicast communication service in the access network, the step of the master server obtaining the downlink communication link information of the current service may include the following sub-steps:
in the substep S21, the main control server obtains a service request protocol packet initiated by the target terminal and applying for the multicast communication service, wherein the service request protocol packet includes service type information, service content information and an access network address of the target terminal; wherein, the service content information comprises a service number;
substep S22, the master control server extracts the access network address of the source terminal in the preset content-address mapping table according to the service number;
in the substep of S23, the main control server obtains the multicast address corresponding to the source terminal and distributes the multicast address to the target terminal; and acquiring the communication link information of the current multicast service according to the service type information and the access network addresses of the source terminal and the target terminal.
In this step, when it is determined that the packet information of the protocol of the video networking is complete information, go to step 503; otherwise go to step 505.
in this step, when it is determined that the previous packet information of the video networking protocol is complete based on the reply information, the new packet information of the video networking protocol is sent if the current packet information of the video networking protocol is sent completely.
In a possible implementation manner, when determining that the last packet information of the video networking protocol is complete, the video networking terminal may further determine a transmission process of the last packet information of the video networking protocol, to determine whether the transmission is completed, and when determining, may also perform corresponding determination based on the foregoing reply information, and of course, may also use other determination manners, which are not specifically limited herein. In addition, besides the above determination methods, those skilled in the art may also use other determination methods according to actual needs, and the embodiment of the present invention is not limited thereto.
In a possible implementation manner, after determining that the sending of the video networking protocol packet information is completed, the video networking terminal may further perform a further determination process, that is, determine whether there is data to be sent, and construct corresponding new video networking protocol packet information based on the data to be sent when there is data to be sent, so as to perform corresponding sending processing, and if there is no data to be sent, the video networking terminal may terminate the service by sending a service termination instruction to the video networking gateway.
In the video network, the video network terminal can generate the video network protocol message group information through the protocol, and the format of the video network protocol message group information can be shown as the following table:
| number of fields | Length of | Description of the invention |
| 0 | 1W | Service start instruction |
| 1 | 1W | Type of device |
| 2 | 1W | Operation code (service type) |
| 3 | 1W | Video network source equipment number |
| 4-6 | 3W | Video network source deviceBackup video networking Mac |
| 7 | 1W | Video networking destination device number |
| 8-10 | 3W | Video networking destination equipment video networking Mac |
| 11 | 1W | Current packet sequence number |
| 12 | 1W | Total number of packets |
| 13-14 | 2W | Effective length of total data |
| 15 | 1W | Effective data length per packet transmission |
| 16-544 | 529W | Data of |
| 545 | 1W | CRC checking |
in this step, when the video network terminal does not receive the reply message sent by the video network gateway, it needs to determine whether to send new video network protocol packet information to the video network gateway. When determining that no new video networking protocol message group information is sent to the video networking gateway, executing the processing of determining whether the reply information sent by the video networking gateway is received in the step S501; otherwise, the process of the foregoing step S503 is executed.
in this step, when it is determined that the foregoing video networking protocol packet information is incomplete, it indicates that packet loss exists in the video networking protocol packet information, and then corresponding missing packet group information is constructed based on the situation, and the constructed missing packet group information is sent to the video networking gateway.
In this step, after receiving the new packet group information of the video networking protocol sent by the video networking terminal in the step 503 or the missing packet group information sent by the video networking terminal in the step 505, the video networking gateway analyzes the new packet group information of the video networking protocol sent by the video networking terminal in the step 503 to determine the corresponding integrity, and generates corresponding acknowledgement message when the new packet group information of the video networking protocol sent by the video networking terminal is complete, wherein the acknowledgement message identifies that the receiving of the packet group information of the video networking protocol is completed; and if the message is not complete, generating corresponding missing reply information which comprises the serial number of the unreceived message.
And step 507, sending the reply information to the video network terminal.
In this step, the gateway of the internet of view will send the specific reply information to the terminal of the internet of view based on the specific reply information, and then continue to execute the processing of step 501.
Based on the technical solution provided by the embodiment of the present invention, the method and the device can be applied to a specific embodiment, for example, in government e-government affairs application, various information of a transactor needs to be collected for verification, comparison and business transaction. The information includes the identity card information, fingerprint information and personal signature information of the transactor. However, the information does not belong to the conventional service of the video network, and if the existing mode is used for data transmission, the information cannot be correctly identified, so that the problem that the information cannot be found after the data is lost occurs. By adopting the technical scheme provided by the embodiment of the invention, the data integrity can be effectively ensured, so that the small data volume service data can be completely transmitted.
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 present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
Referring to fig. 6, a block diagram of an embodiment of a data transmission apparatus based on a video network according to the present invention is shown, where the apparatus may be applied to a video network, where the video network includes a video network gateway, and specifically may include the following units:
the determining unit 61 is configured to determine whether reply information sent by a video networking gateway is received, where the reply information is feedback information returned by the video networking gateway based on the received video networking protocol packet information;
the first processing unit 62 is configured to, when receiving the reply information sent by the video networking gateway, determine whether the corresponding video networking protocol packet group information is complete information based on the reply information;
a sending unit 63, configured to send new packet information of the video networking protocol to the video networking gateway when the packet information of the video networking protocol is complete information; and the message group missing information is sent to the video networking gateway when the video networking protocol message group information is incomplete information.
In a possible implementation manner of the present invention, the first processing unit 62 is configured to determine whether to send new packet group information of the internet of view protocol to the internet of view gateway when receiving no reply information sent by the internet of view gateway;
when determining not to send new video networking protocol packet group information to the video networking gateway, the processing of determining whether the reply information sent by the video networking gateway is received by the determining unit 61 is executed.
In a possible implementation of the invention, the second processing unit 64 is configured to establish a data communication connection with the video networking gateway;
the second processing unit 64 is specifically configured to send a data exchange request to the video networking gateway when supporting a data interaction service; and receiving a data exchange response sent by the video networking gateway, and establishing data communication connection with the video networking gateway based on the data exchange response.
Referring to fig. 7, a block diagram of an embodiment of a data transmission device based on a video network according to the present invention is shown, where the device may be applied to a video network, where the video network includes a video network terminal, and specifically includes the following units:
a sending unit 71, configured to send a reply message to a video networking terminal, where the reply message is feedback information returned based on received video networking protocol packet information sent by the video networking terminal;
a receiving unit 72, configured to receive new packet group information or missing packet group information of the video networking protocol sent by the video networking terminal when the video networking terminal receives the reply information;
a first processing unit 73, configured to generate corresponding specific reply information based on the new packet group information of the internet protocol or the missing packet group information;
the process of sending the reply information to the terminal of the video network by the sending unit 71 is executed based on the specific reply information.
In a possible implementation of the invention, the second processing unit 74 is configured to establish a data communication connection with the terminal of the video network;
the second processing unit 74 is specifically configured to receive a data exchange request sent by the video networking terminal when the video networking terminal supports a data interaction service; and sending a data exchange response to the video networking terminal so that the video networking terminal establishes a data communication connection based on the data exchange response.
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 skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention 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 invention 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 invention 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 invention. 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 invention 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 preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
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 electronic focusing method and the electronic focusing device of the camera provided by the invention are introduced in detail, and the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the examples is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, 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 invention.
Claims (10)
1. A data transmission method based on video network is characterized in that the method is applied to the video network, the video network comprises a video network gateway, and the method comprises the following steps:
determining whether a message reply message sent by the video network gateway is received, wherein the message reply message is a feedback message returned by the video network gateway based on the received video network protocol message group information;
when receiving the reply information sent by the video network gateway, determining whether the corresponding video network protocol message group information is complete information or not based on the reply information; the reply information comprises a multi-bit field number, and the multi-bit field number is used for indicating the number of the packets needing to be retransmitted and a plurality of sequence numbers of the packets needing to be retransmitted; wherein, in the field number of the sequence number of the packet which represents the retransmission, each field number represents a sequence number which needs to be retransmitted;
when the information of the video networking protocol message group is complete information, sending new information of the video networking protocol message group to the video networking gateway;
when the message group information of the video networking protocol is incomplete, missing message group information is sent to the video networking gateway, and the method comprises the following steps: when the video networking protocol message group information is determined to be incomplete, the video networking protocol message group information has a packet loss condition, and corresponding missing message group information is constructed; sending the missing message group information to the video network gateway, wherein the missing reply information corresponding to the missing message group information comprises the serial number of the message which is not received by the video network gateway;
the method is applied to collecting the identity card information, the fingerprint information and the personal signature information of the user to ensure the data integrity, so that the small data volume service data can be completely transmitted.
2. The method of claim 1, further comprising:
when the reply message sent by the video network gateway is not received, determining whether to send new video network protocol message group information to the video network gateway;
and when determining not to send new video networking protocol message group information to the video networking gateway, executing processing for determining whether the reply information sent by the video networking gateway is received.
3. The method according to claim 1 or 2, wherein before determining whether the reply message sent by the video networking gateway is received, the method further comprises:
establishing a data communication connection with the video networking gateway;
the establishing of the data communication connection with the video networking gateway comprises the following steps:
when supporting data interaction service, sending a data exchange request to the video network gateway;
and receiving a data exchange response sent by the video networking gateway, and establishing data communication connection with the video networking gateway based on the data exchange response.
4. A data transmission method based on video network is characterized in that the method is applied to the video network, the video network comprises video network terminals, and the method comprises the following steps:
sending a reply message to the video network terminal, wherein the reply message is a feedback message returned based on the received video network protocol message group message sent by the video network terminal; the reply information comprises a multi-bit field number, and the multi-bit field number is used for indicating the number of the packets needing to be retransmitted and a plurality of sequence numbers of the packets needing to be retransmitted; wherein, in the field number of the sequence number of the packet which represents the retransmission, each field number represents a sequence number which needs to be retransmitted;
when the video network terminal receives the reply information, receiving new video network protocol message group information or missing message group information sent by the video network terminal, wherein the receiving comprises the following steps: when the video networking protocol message group information is determined to be incomplete information, the video networking protocol message group information has a packet loss condition, missing message group information sent by the video networking terminal is received, the missing message group information is correspondingly constructed by the video networking terminal, and missing reply information corresponding to the missing message group information comprises a serial number of an unreceived message;
generating corresponding specific reply information based on the new video networking protocol message group information or the missing message group information;
executing processing of sending the reply information to the video network terminal based on the specific reply information;
the method is applied to collecting the identity card information, the fingerprint information and the personal signature information of the user to ensure the data integrity, so that the small data volume service data can be completely transmitted.
5. The method of claim 4, wherein before sending the reply message to the terminal of the video network, the method further comprises:
establishing data communication connection with the video networking terminal;
the establishing of the data communication connection with the video networking terminal comprises the following steps:
when the video network terminal supports data interaction service, receiving a data exchange request sent by the video network terminal;
and sending a data exchange response to the video networking terminal so that the video networking terminal establishes a data communication connection based on the data exchange response.
6. A data transmission device based on video network, which is applied in video network, the video network includes a video network gateway, comprising:
the device comprises a determining unit, a sending unit and a receiving unit, wherein the determining unit is used for determining whether the message reply information sent by the video networking gateway is received or not, and the message reply information is feedback information returned by the video networking gateway based on the received video networking protocol message group information;
the first processing unit is used for determining whether corresponding video networking protocol message group information is complete information or not based on the reply information when the reply information sent by the video networking gateway is received; the reply information comprises a multi-bit field number, and the multi-bit field number is used for indicating the number of the packets needing to be retransmitted and a plurality of sequence numbers of the packets needing to be retransmitted; wherein, in the field number of the sequence number of the packet which represents the retransmission, each field number represents a sequence number which needs to be retransmitted;
the sending unit is used for sending new video networking protocol message group information to the video networking gateway when the video networking protocol message group information is complete information; when the message group information of the video networking protocol is incomplete, the missing message group information is sent to the video networking gateway, and the method comprises the following steps: when the video networking protocol message group information is determined to be incomplete, the video networking protocol message group information has a packet loss condition, corresponding missing message group information is constructed, the missing message group information is sent to the video networking gateway, and the missing reply information corresponding to the missing message group information contains the serial number of a message which is not received by the video networking gateway;
the device is applied to collecting the identity card information, the fingerprint information and the personal signature information of a user so as to ensure the integrity of data and further enable small data volume service data to be transmitted completely.
7. The apparatus according to claim 6, wherein the first processing unit is configured to determine whether to send new internet protocol packet information to the internet of view gateway when receiving no reply message sent by the internet of view gateway;
and when determining that the new video networking protocol message group information is not sent to the video networking gateway, executing the processing that the determining unit determines whether the reply information sent by the video networking gateway is received.
8. The apparatus of claim 6 or 7, further comprising:
the second processing unit is used for establishing data communication connection with the video networking gateway;
the second processing unit is specifically configured to send a data exchange request to the video networking gateway when supporting a data interaction service; and receiving a data exchange response sent by the video networking gateway, and establishing data communication connection with the video networking gateway based on the data exchange response.
9. A data transmission device based on video network, characterized in that, the device is applied in the video network, the video network includes video network terminal, including:
the sending unit is used for sending reply information to the video networking terminal, wherein the reply information is feedback information returned based on the received video networking protocol message group information sent by the video networking terminal; the reply information comprises a multi-bit field number, and the multi-bit field number is used for indicating the number of the packets needing to be retransmitted and a plurality of sequence numbers of the packets needing to be retransmitted; wherein, in the field number of the sequence number of the packet which represents the retransmission, each field number represents a sequence number which needs to be retransmitted;
a receiving unit, configured to receive new packet group information or missing packet group information of the video networking protocol sent by the video networking terminal when the video networking terminal receives the reply information, where the receiving unit includes: when the video networking protocol message group information is determined to be incomplete information, the video networking protocol message group information has a packet loss condition, missing message group information sent by the video networking terminal is received, the missing message group information is correspondingly constructed by the video networking terminal, and missing reply information corresponding to the missing message group information comprises a serial number of an unreceived message;
the first processing unit is used for generating corresponding specific palindrome information based on the new video networking protocol message group information or the missing message group information;
executing the processing of sending the reply information to the video network terminal by the sending unit based on the specific reply information;
the device is applied to collecting the identity card information, the fingerprint information and the personal signature information of a user so as to ensure the integrity of data and further enable small data volume service data to be transmitted completely.
10. The apparatus of claim 9, further comprising:
the second processing unit is used for establishing data communication connection with the video networking terminal;
the second processing unit is specifically configured to receive a data exchange request sent by the video networking terminal when the video networking terminal supports a data interaction service; and sending a data exchange response to the video networking terminal so that the video networking terminal establishes a data communication connection based on the data exchange response.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101193258A (en) * | 2006-12-01 | 2008-06-04 | 北京东方广视科技有限责任公司 | Time slice and confliction avoidance method in CATV network |
| CN107888544A (en) * | 2016-09-29 | 2018-04-06 | 北京视联动力国际信息技术有限公司 | A kind of method and system depending on establishing communication between networked terminals and communication apparatus |
| CN108012106A (en) * | 2016-11-01 | 2018-05-08 | 北京视联动力国际信息技术有限公司 | A kind of method and system regarding networking monitoring source synchronous |
Family Cites Families (2)
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101193258A (en) * | 2006-12-01 | 2008-06-04 | 北京东方广视科技有限责任公司 | Time slice and confliction avoidance method in CATV network |
| CN107888544A (en) * | 2016-09-29 | 2018-04-06 | 北京视联动力国际信息技术有限公司 | A kind of method and system depending on establishing communication between networked terminals and communication apparatus |
| CN108012106A (en) * | 2016-11-01 | 2018-05-08 | 北京视联动力国际信息技术有限公司 | A kind of method and system regarding networking monitoring source synchronous |
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