CN110022500B - Packet loss processing method and device - Google Patents
Packet loss processing method and device Download PDFInfo
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- CN110022500B CN110022500B CN201910263011.1A CN201910263011A CN110022500B CN 110022500 B CN110022500 B CN 110022500B CN 201910263011 A CN201910263011 A CN 201910263011A CN 110022500 B CN110022500 B CN 110022500B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
- H04N21/64784—Data processing by the network
- H04N21/64792—Controlling the complexity of the content stream, e.g. by dropping packets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
Abstract
The embodiment of the invention provides a packet loss processing method and a packet loss processing device, which are applied to a video network, wherein the video network comprises a video network server and a video network terminal, and the method comprises the following steps: the video network terminal receives a plurality of first data packets of a specific file sent by a video network server; when the video network terminal determines that a first data packet is lost, the video network terminal sends an acquisition request to the video network server; the video network terminal receives a plurality of second data packets of the specific file; the plurality of second data packets are sent by the video networking server based on the obtaining request; the video network terminal acquires a target second data packet corresponding to the lost first data packet from the plurality of second data packets; and the video network terminal combines the received first data packet with the target second data packet to obtain the specific file. By the embodiment of the invention, the correctness and the integrity of the large file in the transmission process are ensured.
Description
Technical Field
The present invention relates to the field of data transmission technologies, and in particular, to a packet loss processing method and a packet loss processing apparatus.
Background
The video networking is a higher-level form of the Internet, is a real-time network, can realize the real-time transmission of full-network high-definition videos, and pushes a plurality of Internet applications to high-definition video, and high-definition faces each other. Finally, world no-distance is realized, and the distance between people in the world is only the distance of one screen.
In practice, as the demands of users on the functions of the video networking terminal are increasing, the interface beautification degree is more and more critical, and the application upgrade files and the menu resources are continuously enlarged. Which are all necessary files that cannot be destroyed. For convenience of transmission, such a separate large file is split into multiple network packets, and the packets are identified by packet numbers. However, in actual transmission, a large file is transmitted in the form of a plurality of network data packets, which may cause data packet loss and damage the integrity of data.
Disclosure of Invention
In view of the above problems, embodiments of the present invention are proposed to provide a packet loss processing method and a corresponding packet loss processing apparatus that overcome or at least partially solve the above problems.
In order to solve the above problem, an embodiment of the present invention discloses a packet loss processing method, which is applied to a video network, where the video network includes a video network server and a video network terminal, and the method includes:
the video network terminal receives a plurality of first data packets of a specific file sent by a video network server;
when the video network terminal determines that a first data packet is lost, the video network terminal sends an acquisition request to the video network server;
the video network terminal receives a plurality of second data packets of the specific file; the plurality of second data packets are sent by the video networking server based on the obtaining request;
the video network terminal acquires a target second data packet corresponding to the lost first data packet from the plurality of second data packets;
and the video network terminal combines the received first data packet with the target second data packet to obtain the specific file.
Optionally, the method further comprises:
and when the video network terminal determines that the first data packet is lost, recording the identification information of the lost first data packet.
Optionally, the method further comprises:
and if the first data packet of the specific file has no packet loss, the video networking terminal stores the specific file.
Optionally, the obtaining, by the video networking terminal, a target second data packet corresponding to the lost first data packet from the plurality of second data packets includes:
and the video network terminal acquires a target second data packet with the identification information identical to that of the lost first data packet from the plurality of second data packets.
Optionally, the combining, by the video networking terminal, the received first data packet and the target second data packet to obtain a specific file includes:
the video network terminal sorts the received first data packet and the target second data packet according to identification information;
and the video network terminal stores the sequenced data packets.
The embodiment of the invention also discloses a packet loss processing device, which is applied to the video network, wherein the video network comprises a video network server and a video network terminal, and the device comprises:
the first data packet receiving module is used for receiving a plurality of first data packets of a specific file sent by the video network server by the video network terminal;
the acquisition request sending module is used for sending an acquisition request to the video network server by the video network terminal when the video network terminal determines that a first data packet is lost;
the second data packet receiving module is used for receiving a plurality of second data packets of the specific file by the video networking terminal; the plurality of second data packets are sent by the video networking server based on the obtaining request;
a target second data packet obtaining module, configured to obtain, by the video networking terminal, a target second data packet corresponding to the lost first data packet from the plurality of second data packets;
and the specific file acquisition module is used for combining the received first data packet with the target second data packet by the video networking terminal to obtain the specific file.
Optionally, the method further comprises:
and the identification information recording module is used for recording the identification information of the lost first data packet when the video network terminal determines that the first data packet is lost.
Optionally, the method further comprises:
and the storage module is used for storing the specific file by the video networking terminal if the first data packet of the specific file has no packet loss.
Optionally, the target second packet obtaining module includes:
and the target second data packet obtaining submodule is used for obtaining the target second data packet with the identification information which is the same as the identification information of the lost first data packet from the plurality of second data packets by the video networking terminal.
Optionally, the specific file obtaining module includes:
the sequencing submodule sequences the received first data packet and the target second data packet according to the identification information by the video network terminal;
and the storage submodule is used for storing the sequenced data packets by the video network terminal.
The embodiment of the invention also discloses a device, which comprises:
one or more processors; and
one or more machine readable media having instructions stored thereon that, when executed by the one or more processors, cause the apparatus to perform one or more methods as described above.
Embodiments of the invention also disclose one or more machine-readable media having instructions stored thereon, which when executed by one or more processors, cause the processors to perform one or more of the methods described above.
The embodiment of the invention has the following advantages: the embodiment of the invention receives a plurality of first data packets of a specific file sent by a video network server through a video network terminal; when the video network terminal determines that the first data packet is lost, the video network terminal sends an acquisition request to a video network server; the video network terminal receives a plurality of second data packets of the specific file; the video network terminal acquires a target second data packet corresponding to the lost first data packet from the plurality of second data packets; and combining the received first data packet with the target second data packet to obtain the specific file. By the embodiment of the invention, the correctness and the integrity of the large file in the transmission process are ensured.
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 steps of an embodiment of a packet loss processing method according to the present invention;
fig. 6 is a block diagram of a design scheme of an embodiment of a packet loss processing method according to the present invention;
fig. 7 is a schematic structural diagram of an embodiment of a packet loss processing apparatus according to an embodiment of 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 the traditional Ethernet (Ethernet) to face the potentially huge first 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: server, exchanger (including Ethernet protocol conversion gateway), terminal (including various set-top boxes, code board, memory, 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 server, access exchanger (including Ethernet protocol conversion gateway), terminal (including various set-top boxes, coding board, memory, 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 and may include 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 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 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.
Referring to fig. 5, a flowchart illustrating steps of an embodiment of a packet loss processing method according to the present invention is shown, and specifically, the method may include the following steps:
in practical application, when a large file is transmitted, the large file is divided into a plurality of data packets for transmission, each packet has a packet number as an identifier, and finally the plurality of data packets are integrated through the packet number, so that the complete transmission of the large file is realized.
In the embodiment of the invention, the video network server divides the specific file into a plurality of first data packets and sends the first data packets to the video network terminal.
in a specific implementation, when a first data packet received by the video network terminal loses packets, the video network terminal sends an acquisition request for acquiring a specific file to the video network server again to acquire the specific file again.
In the embodiment of the invention, when the video network terminal determines that the first data packet is lost, the identifier of the lost first data packet is recorded.
In a specific implementation, when the video network terminal determines that a data packet is lost in a plurality of received first data packets, the identification information of the lost first data packet is recorded, where the identification information may be a packet number of the data packet.
In the embodiment of the present invention, if the first data packet of the specific file has not lost the packet, the video networking terminal stores the specific file.
In a specific implementation, if the video network terminal determines that the received plurality of first data packets are not lost, the video network terminal directly stores a specific file formed by the plurality of first data packets.
when the specific file received by the video network terminal generates a packet loss phenomenon, the video network terminal can send an acquisition request of the specific file to the video network server again. And the video network server divides the specific file into a plurality of second data packets based on the acquisition request and sends the second data packets to the video network terminal. The plurality of second data packets are the same data packets corresponding to the plurality of first data packets one to one.
in a specific implementation, the request of the video network terminal to the video network server is a complete specific file, which is the same as the specific file first issued by the video network terminal. Therefore, the target second data packet corresponding to the lost first data packet can be obtained from the plurality of second data packets in the re-issued specific file.
In this embodiment of the present invention, step 504 may include the step of obtaining, by the video network terminal, a target second packet whose identification information is the same as that of the lost first packet from the plurality of second packets.
In a specific implementation, since the specific file delivered again by the video networking server is the same as the specific file delivered for the first time, the same data packets in the specific files delivered for two times have the same identification information. After determining the identification information of the lost first data packet, the target second data packet may be obtained from the plurality of second data packets according to the identification information.
And 505, the video network terminal combines the received first data packet with the target second data packet to obtain the specific file.
Because the video network terminal stores the first data packet which is not lost and records the identification information of the lost first data packet, after the data packets are complemented according to the identification information of the lost first data packet, all the data packets are combined and sequenced to obtain a complete specific file sent by the video network server.
In this embodiment of the present invention, step 505 may include the step that the video network terminal sorts the received first data packet and the target second data packet according to identification information; and the video network terminal stores the sequenced data packets.
In a specific implementation, each data packet has its own identification information, so that the received first data packet and the second data packet can be combined and sorted according to the identification information to obtain a complete specific file sent by the video networking server. And stores it in the terminal of the video network.
Referring to fig. 6, a block diagram of a design scheme of an embodiment of a packet loss processing method according to an embodiment of the present invention is shown.
When the video network terminal requests the video network server to issue the resource file, the video network server sends the resource file to the video network terminal according to the request. After receiving the resource file, the video network terminal creates a cache queue to cache each data packet in the resource file. If the video network terminal finds that the data packet is lost in the process of receiving the data packet, a packet loss queue is created, the packet number of the lost data packet is recorded, and the video network terminal requests the video network server to send a resource file again. And after receiving the resource file which is issued again, the video network terminal matches the lost data packet in the resource file which is issued again according to the packet number and writes the matched lost data packet into a packet loss queue. When the lost data packets are complemented, the video network terminal integrates the data packets in the buffer queue and the packet loss queue, and sorts and stores the data packets according to packet numbers.
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.
The embodiment of the invention has the following advantages: the embodiment of the invention receives a plurality of first data packets of a specific file sent by a video network server through a video network terminal; when the video network terminal determines that the first data packet is lost, the video network terminal sends an acquisition request to a video network server; the video network terminal receives a plurality of second data packets of the specific file; the video network terminal acquires a target second data packet corresponding to the lost first data packet from the plurality of second data packets; and combining the received first data packet with the target second data packet to obtain the specific file. By the embodiment of the invention, the correctness and the integrity of the large file in the transmission process are ensured.
Referring to fig. 7, a block diagram of a packet loss processing apparatus according to an embodiment of the present invention is shown, and specifically includes the following modules:
a first data packet receiving module 701, configured to receive, by a video networking terminal, a plurality of first data packets of a specific file sent by a video networking server;
an obtaining request sending module 702, configured to send, when the video networking terminal determines that a first data packet is lost, an obtaining request to the video networking server;
a second packet receiving module 703, configured to receive, by the video networking terminal, a plurality of second packets of the specific file; the plurality of second data packets are sent by the video networking server based on the obtaining request;
a target second packet obtaining module 704, configured to obtain, by the video networking terminal, a target second packet corresponding to the lost first packet from the plurality of second packets;
a specific file obtaining module 705, configured to combine the received first data packet with the target second data packet by the video network terminal to obtain the specific file.
In the embodiment of the present invention, the method further includes:
and the identification information recording module is used for recording the identification information of the lost first data packet when the video network terminal determines that the first data packet is lost.
In the embodiment of the present invention, the method further includes:
and the storage module is used for storing the specific file by the video networking terminal if the first data packet of the specific file has no packet loss.
In this embodiment of the present invention, the target second packet obtaining module includes:
and the target second data packet obtaining submodule is used for obtaining the target second data packet with the identification information which is the same as the identification information of the lost first data packet from the plurality of second data packets by the video networking terminal.
In this embodiment of the present invention, the specific file acquiring module includes:
the sequencing submodule sequences the received first data packet and the target second data packet according to the identification information by the video network terminal;
and the storage submodule is used for storing the sequenced data packets by the video network terminal.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
An embodiment of the present invention further provides an apparatus, including:
one or more processors; and
one or more machine-readable media having instructions stored thereon, which when executed by the one or more processors, cause the apparatus to perform methods as described in embodiments of the invention.
Embodiments of the invention also provide one or more machine-readable media having instructions stored thereon, which when executed by one or more processors, cause the processors to perform the methods described in embodiments of the invention.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one 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 packet loss processing method and the packet loss processing apparatus provided by the present invention are described in detail above, and a specific example is applied in the text to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the present 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 packet loss processing method is applied to a video network, wherein the video network comprises a video network server and a video network terminal, and the method comprises the following steps:
the video network terminal receives a plurality of first data packets of a specific file sent by a video network server;
when the video network terminal determines that a first data packet is lost, the video network terminal sends an acquisition request to the video network server;
the video network terminal receives a plurality of second data packets of the specific file; the plurality of second data packets are sent by the video networking server based on the obtaining request;
the video network terminal acquires a target second data packet corresponding to the lost first data packet from the plurality of second data packets;
the video network terminal combines the received first data packet with the target second data packet to obtain the specific file;
wherein, the video network terminal obtains a target second data packet corresponding to the lost first data packet from the plurality of second data packets, and the method comprises the following steps:
and the video network terminal acquires a target second data packet with the identification information identical to that of the lost first data packet from the plurality of second data packets.
2. The method of claim 1, further comprising:
and when the video network terminal determines that the first data packet is lost, recording the identification information of the lost first data packet.
3. The method of claim 2, further comprising:
and if the first data packet of the specific file has no packet loss, the video networking terminal stores the specific file.
4. The method of claim 1, wherein the video networking terminal combining the received first data packet with the target second data packet to obtain a specific file comprises:
the video network terminal sorts the received first data packet and the target second data packet according to identification information;
and the video network terminal stores the sequenced data packets.
5. A packet loss processing device is applied to a video network, wherein the video network comprises a video network server and a video network terminal, and the device comprises:
the first data packet receiving module is used for receiving a plurality of first data packets of a specific file sent by the video network server by the video network terminal;
the acquisition request sending module is used for sending an acquisition request to the video network server by the video network terminal when the video network terminal determines that a first data packet is lost;
the second data packet receiving module is used for receiving a plurality of second data packets of the specific file by the video networking terminal; the plurality of second data packets are sent by the video networking server based on the obtaining request;
a target second data packet obtaining module, configured to obtain, by the video networking terminal, a target second data packet corresponding to the lost first data packet from the plurality of second data packets;
the specific file acquisition module is used for combining the received first data packet with the target second data packet by the video networking terminal to obtain the specific file;
wherein, the target second data packet obtaining module includes:
and the target second data packet obtaining submodule is used for obtaining the target second data packet with the identification information which is the same as the identification information of the lost first data packet from the plurality of second data packets by the video networking terminal.
6. The apparatus of claim 5, further comprising:
and the identification information recording module is used for recording the identification information of the lost first data packet when the video network terminal determines that the first data packet is lost.
7. The apparatus of claim 6, further comprising:
and the storage module is used for storing the specific file by the video networking terminal if the first data packet of the specific file has no packet loss.
8. The apparatus of claim 5, wherein the specific file obtaining module comprises:
the sequencing submodule is used for sequencing the received first data packet and the target second data packet according to the identification information by the video network terminal;
and the storage submodule is used for storing the sequenced data packets by the video network terminal.
9. An apparatus, comprising:
one or more processors; and
one or more machine-readable media having instructions stored thereon that, when executed by the one or more processors, cause the apparatus to perform the method of one or more of claims 1-4.
10. One or more machine readable media having instructions stored thereon that, when executed by one or more processors, cause the processors to perform the method of one or more of claims 1-4.
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| CN116319312A (en) * | 2022-09-07 | 2023-06-23 | 海南乾唐视联信息技术有限公司 | Terminal upgrading method and device, communication device and storage medium |
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| CN106131710A (en) * | 2016-07-14 | 2016-11-16 | 天彩电子（深圳）有限公司 | The method of a kind of video data re-transmission and system thereof |
| WO2019038738A1 (en) * | 2017-08-25 | 2019-02-28 | Telefonaktiebolaget L M Ericsson (Publ) | System and method for providing fast abr startup with selective abr segment delivery |
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