CN111245592B - Signaling transmission method and device and computer readable storage medium - Google Patents

Signaling transmission method and device and computer readable storage medium Download PDF

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CN111245592B
CN111245592B CN202010109079.7A CN202010109079A CN111245592B CN 111245592 B CN111245592 B CN 111245592B CN 202010109079 A CN202010109079 A CN 202010109079A CN 111245592 B CN111245592 B CN 111245592B
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signaling
terminal
preset
sending
udp communication
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CN111245592A (en
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吕亚亚
李云鹏
谢文龙
王艳辉
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Visionvera Information Technology Co Ltd
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Visionvera Information Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/24—Multipath
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management

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  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Multimedia (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

The embodiment of the invention provides a signaling transmission method, a device and a computer readable storage medium, wherein the method comprises the steps of receiving a preset signaling sent by a video network server, sending the preset signaling to a multilink terminal through at least one UDP communication link in a plurality of UDP communication links, so that the multilink terminal sends the preset signaling to the video network terminal, and sending a reply signaling to the video network server when receiving the reply signaling corresponding to the preset signaling from the video network terminal within preset time so as to maintain the connection between the video network terminal and the video network server. By adopting the method of the embodiment, the traditional TCP single-link signaling transmission is changed into UDP multi-link signaling transmission, the signaling transmission speed is guaranteed, and the network congestion phenomenon is reduced, so that the video network terminal is not easily interrupted due to the network congestion after being connected with the video network server.

Description

Signaling transmission method and device and computer readable storage medium
Technical Field
The present invention relates to the field of data transmission technologies, and in particular, to a signaling transmission method, an apparatus, and a computer-readable storage medium.
Background
The video networking signaling is a key for ensuring that the video networking terminal is online and controlling the video networking service, and if the signaling is interrupted, the video networking terminal is disconnected, the ongoing service is interrupted, and extremely poor experience is caused.
Under the condition of multilink data transmission, the signaling of the video network is transmitted through a single link of a TCP (transmission control protocol), namely, only one specific link is adopted to transmit the signaling, so that although packet loss is avoided, the TCP transmission of the single link causes network congestion due to network problems, the signaling of the video network cannot arrive in time or even cannot arrive, further ongoing service interruption is caused, and user experience is influenced.
Disclosure of Invention
In view of the above, embodiments of the present invention are proposed to provide a signaling transmission method, apparatus and computer-readable storage medium that overcome or at least partially solve the above problems.
In order to solve the above problem, an embodiment of the present invention discloses a signaling transmission method, which is applied to an aggregation server in a video networking signaling transmission system, wherein the aggregation server is in communication connection with the video networking server and is connected with a multilink terminal through a plurality of UDP communication links, and the multilink terminal is in communication connection with the video networking terminal, and the method includes:
under the condition that the connection between the video network terminal and the video network server is established, receiving a preset signaling sent by the video network server;
sending the preset signaling to the multilink terminal through at least one UDP communication link in the plurality of UDP communication links, so that the multilink terminal sends the preset signaling to the video networking terminal;
and when a reply signaling corresponding to the preset signaling from the video network terminal is received within a preset time, sending the reply signaling to the video network server so as to maintain the connection between the video network terminal and the video network server.
Optionally, the method further comprises:
when a reply signaling corresponding to a preset signaling is not received from the video networking terminal within the preset time, acquiring the reply signaling and a preset identifier corresponding to the preset signaling;
and sending the acquired reply signaling and a preset identifier to the video networking server so as to maintain the connection between the video networking terminal and the video networking server, wherein the preset identifier represents the network state between the aggregation server and the multilink terminal.
Optionally, the method further comprises:
determining a sending strategy corresponding to the preset signaling according to the importance degree of the preset signaling;
the sending the preset signaling to the multi-link terminal through at least one UDP communication link in the plurality of UDP communication links includes:
and sending the preset signaling to the multilink terminal through at least one UDP communication link in the plurality of UDP communication links according to the sending strategy.
Optionally, the sending policy includes at least one of: a polling transmission strategy, a signal quality best transmission strategy, a multi-path transmission strategy, a forward error correction strategy and an encryption transmission strategy;
the sending the preset signaling to the multilink terminal through at least one UDP communication link of the plurality of UDP communication links according to the sending policy includes:
when the sending strategy is a polling sending strategy, polling each UDP communication link in the plurality of UDP communication links, and sending the preset signaling through the UDP communication link obtained by polling;
when the sending strategy is a sending strategy with the best signal quality, determining a UDP communication link with the best signal quality in the plurality of UDP communication links, and sending the preset signaling to the multi-link terminal through the UDP communication link with the best signal quality;
when the sending strategy is a multi-channel sending strategy, respectively sending the preset signaling to the multi-link terminal through each UDP communication link in the plurality of UDP communication links;
when the sending strategy is a forward error correction strategy, adding a redundant packet to the preset signaling, and sending the preset signaling added with the redundant packet to the multilink terminal through at least one UDP communication link in the plurality of UDP communication links, so that when the preset signaling loses packets, the multilink terminal can restore the preset signaling according to the redundant packet;
and when the sending strategy is an encryption sending strategy, encrypting the preset signaling, and sending the encrypted preset signaling to the multilink terminal through at least one UDP communication link in the plurality of UDP communication links.
Optionally, determining a sending policy corresponding to the preset signaling according to the signaling importance degree includes:
when the preset signaling is broadcast addressing signaling, determining to adopt the polling transmission strategy;
when the preset signaling is heartbeat signaling, determining to adopt the signal quality best sending strategy;
when the preset signaling is service signaling, determining to adopt the best signal quality sending strategy and the forward error correction strategy;
and when the preset signaling is a conference control signaling, determining to adopt the multi-path sending strategy and the forward error correction strategy.
Optionally, the reply signaling corresponding to the preset signaling is generated and sent by the video networking terminal to the multi-link terminal, and then sent by the multi-link terminal to the aggregation server through at least one UDP communication link in the plurality of UDP communication links.
The embodiment of the invention also discloses a signaling transmission device, which is applied to an aggregation server in a video networking signaling transmission system, wherein the aggregation server is in communication connection with the video networking server and is connected with a multilink terminal through a plurality of UDP communication links, the multilink terminal is in communication connection with the video networking terminal, and the device comprises:
the receiving module is used for receiving a preset signaling sent by the video network server under the condition that the connection between the video network terminal and the video network server is established;
a first sending module, configured to send the preset signaling to the multilink terminal through at least one UDP communication link in the UDP communication links, so that the multilink terminal sends the preset signaling to the video networking terminal;
and the second sending module is used for sending the reply signaling to the video network server when receiving the reply signaling corresponding to the preset signaling from the video network terminal within the preset time so as to maintain the connection between the video network terminal and the video network server.
Optionally, the apparatus further comprises:
the acquisition module is used for acquiring a reply signaling and a preset identifier corresponding to a preset signaling when the reply signaling corresponding to the preset signaling is not received from the video network terminal within the preset time;
and the third sending module is used for sending the acquired reply signaling and a preset identifier to the video network server so as to maintain the connection between the video network terminal and the video network server, wherein the preset identifier represents the network state between the aggregation server and the multilink terminal.
Optionally, the apparatus further comprises:
the determining module is used for determining a sending strategy corresponding to the preset signaling according to the importance degree of the preset signaling;
the first sending module includes:
and the sending submodule is used for sending the preset signaling to the multilink terminal through at least one UDP communication link in the plurality of UDP communication links according to the sending strategy.
Optionally, the sending policy includes at least one of: a polling transmission strategy, a signal quality best transmission strategy, a multi-path transmission strategy, a forward error correction strategy and an encryption transmission strategy; the sending submodule is further configured to:
when the sending strategy is a polling sending strategy, polling each UDP communication link in the plurality of UDP communication links, and sending the preset signaling through the UDP communication link obtained by polling;
when the sending strategy is the sending strategy with the best signal quality, determining the UDP communication link with the best signal quality in the plurality of UDP communication links, and sending the preset signaling to the multi-link terminal through the UDP communication link with the best signal quality;
when the sending strategy is a multi-channel sending strategy, respectively sending the preset signaling to the multi-link terminal through each UDP communication link in the plurality of UDP communication links;
when the sending strategy is a forward error correction strategy, adding a redundant packet to the preset signaling, and sending the preset signaling added with the redundant packet to the multilink terminal through at least one UDP communication link in the plurality of UDP communication links, so that when the preset signaling loses packets, the multilink terminal can restore the preset signaling according to the redundant packet;
and when the sending strategy is an encryption sending strategy, encrypting the preset signaling, and sending the encrypted preset signaling to the multilink terminal through at least one UDP communication link in the plurality of UDP communication links.
Optionally, the determining module is further configured to:
when the preset signaling is broadcast addressing signaling, determining to adopt the polling transmission strategy;
when the preset signaling is heartbeat signaling, determining to adopt the signal quality best sending strategy;
when the preset signaling is service signaling, determining to adopt the best signal quality sending strategy and the forward error correction strategy;
and when the preset signaling is a conference control signaling, determining to adopt the multi-path sending strategy and the forward error correction strategy.
Optionally, the reply signaling corresponding to the preset signaling is generated and sent by the video networking terminal to the multi-link terminal, and then sent by the multi-link terminal to the aggregation server through at least one UDP communication link in the plurality of UDP communication links.
The embodiment of the invention also discloses a signaling transmission device, which comprises:
one or more processors; and
one or more computer-readable media having instructions stored thereon, which, when executed by the one or more processors, cause the apparatus to perform a signaling transmission method according to any one of the embodiments of the present invention.
The embodiment of the invention also discloses a computer readable storage medium, and a stored computer program enables a processor to execute the signaling transmission method.
The embodiment of the invention has the following advantages:
the embodiment of the invention changes the traditional TCP single link signaling transmission into UDP multilink signaling transmission, firstly uses UDP transmission to replace TCP transmission, ensures the signaling transmission speed and reduces the network congestion phenomenon, secondly adopts a multilink cooperation mode to further ensure the signaling transmission speed and reduce the network congestion phenomenon, in addition, determines the sending strategy corresponding to the preset signaling according to the importance degree of the preset signaling, can well ensure that the important signaling is not lost, and finally, even if the network state between the aggregation server and the multilink terminal is very poor, the preset signaling or the reply signaling is lost, the embodiment of the application can send the reply signaling corresponding to the preset signaling to the video network server by acquiring the reply signaling, so as to maintain the connection between the video network terminal and the video network server and avoid the ongoing service interruption, therefore, user experience is improved, and meanwhile, the network state between the aggregation server and the multilink terminal can be known in time in a preset identification mode, so that adjustment can be conveniently made, and the signaling transmission efficiency is improved.
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FIG. 1 is a schematic illustration of an implementation environment of an embodiment of the invention;
fig. 2 is a flowchart of a signaling transmission method according to an embodiment of the present invention;
fig. 3 is a flowchart of a signaling transmission method according to another embodiment of the present invention;
fig. 4 is a flowchart of a signaling transmission method according to another embodiment of the present invention;
fig. 5 is a flowchart illustrating a data transmission method according to another embodiment of the present invention;
fig. 6 is a block diagram of a signaling transmission apparatus according to an embodiment of the present invention;
FIG. 7 is a networking schematic of a video network of the present invention;
FIG. 8 is a schematic diagram of a hardware architecture of a node server according to the present invention;
fig. 9 is a schematic diagram of a hardware structure of an access switch of the present invention;
fig. 10 is a schematic diagram of a hardware structure of an ethernet protocol conversion gateway 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.
Referring to fig. 1, fig. 1 is a schematic diagram of an implementation environment according to an embodiment of the invention. As shown in fig. 1, the implementation environment includes: the system comprises a video network terminal, a multilink terminal, an aggregation server and a video network server. The video network server is connected with the aggregation server through the switch, the aggregation server is connected with the multilink terminal through a plurality of UDP communication links, the multilink terminal is directly connected with the video network terminal through a network cable, and a plurality of dotted lines between the multilink terminal and the aggregation server in fig. 1 represent a plurality of UDP communication links.
In practice, there are both the procedure of sending signaling from the terminal of the video network to the video network server and the procedure of sending signaling from the server of the video network to the terminal of the video network, so that the multilink terminal and the aggregation server have similarities in function, i.e., can provide multiple UDP communication links between the multilink terminal and the aggregation server, and can reorder and integrate the received scattered packets.
If the video networking terminal sends the signaling to the video networking server, the video networking terminal firstly transmits the signaling to the multilink terminal, the multilink terminal forwards the signaling to the aggregation server through at least one UDP communication link in the plurality of UDP communication links, and the aggregation server sends the dispersed data packets from the multilink terminal to the video networking server after reordering and integrating the dispersed data packets; if the video network server sends the signaling to the video network terminal, the video network server firstly transmits the signaling to the aggregation server, the aggregation server forwards the signaling to the multilink terminal through at least one UDP communication link in the plurality of UDP communication links, and the multilink terminal sends the video network terminal after reordering and integrating the dispersed data packets from the aggregation server.
For the two signaling transmission paths, the signaling transmission methods are basically similar, and therefore, the present application mainly takes an example that the video network server sends a signaling to the video network terminal to obtain a reply signaling of the video network terminal as an example for explanation. For a signaling transmission method for sending a signaling to a video network server by a video network terminal to obtain a reply signaling of the video network server, reference may be made to the former signaling, which is not described in detail herein.
Referring to fig. 2, fig. 2 is a flowchart of a signaling transmission method according to an embodiment of the present invention, and as shown in fig. 2, the method may be applied to an aggregation server in a video networking signaling transmission system, where the aggregation server is communicatively connected to the video networking server and is connected to a multilink terminal through a plurality of UDP communication links, and the multilink terminal is communicatively connected to the video networking terminal, and the method specifically may include the following steps:
step S21, receiving a preset signaling sent by the video network server when the connection between the video network terminal and the video network server is established.
In this embodiment, to perform normal service between the terminal of the video networking and the video networking server, the terminal of the video networking and the video networking server need to be kept in an online state, that is, a communication connection is established between the terminal of the video networking and the video networking server. In this case, the signaling sent by the video network server to the video network terminal is first sent to the aggregation server, that is, the aggregation server may receive the preset signaling sent by the video network server.
In one embodiment, the preset signaling may include broadcast addressing signaling, heartbeat signaling, traffic signaling, and guild signaling.
Step S22, sending the preset signaling to the multilink terminal through at least one UDP communication link in the plurality of UDP communication links, so that the multilink terminal sends the preset signaling to the video network terminal.
In this embodiment, the sending of the preset signaling to the multi-link terminal through at least one UDP communication link in the plurality of UDP communication links means that when the aggregation server sends the preset signaling to the multi-link terminal, only one UDP communication link may be selected to send the preset signaling, or a plurality of UDP communication links may be simultaneously selected to send the preset signaling.
After receiving the preset signaling, the aggregation server may send the preset signaling to the multilink terminal through at least one UDP communication link of the plurality of UDP communication links, and after receiving the preset signaling, the multilink terminal may send the preset signaling to the video network terminal.
After receiving the preset signaling sent by the video networking server, the video networking terminal can generate a reply signaling corresponding to the preset signaling according to the preset signaling, and then send the reply signaling to the multi-link terminal, and the multi-link terminal can send the reply signaling to the aggregation server through at least one UDP communication link in the plurality of UDP communication links.
Step S23, when a reply signaling corresponding to the preset signaling is received from the video network terminal within a preset time, the reply signaling is sent to the video network server so as to maintain the connection between the video network terminal and the video network server.
In this embodiment, the preset time may be counted from the time when the aggregation server sends the preset signaling, the aggregation server may periodically detect whether the aggregation server receives the reply signaling corresponding to the preset signaling from the video networking terminal, and if the aggregation server receives the reply signaling corresponding to the preset signaling from the video networking terminal within the preset time, the aggregation server sends the reply signaling to the video networking server, and the video networking server receives the reply signaling, that is, it is possible to know that the video networking terminal is online, so that the video networking server may maintain the connection between the video networking terminal and the video networking server, so as to ensure that the service is normally performed.
In this embodiment, when the connection between the video networking terminal and the video networking server is established, the aggregation server receives a preset signaling sent by the video networking server, and then sends the preset signaling to the multilink terminal through at least one UDP communication link of the UDP communication links, so that the multilink terminal sends the preset signaling to the video networking terminal, and if the aggregation server receives a reply signaling corresponding to the preset signaling from the video networking terminal within a preset time, the reply signaling is sent to the video networking server, so as to maintain the connection between the video networking terminal and the video networking server. By adopting the method of the embodiment, the traditional TCP single-link signaling transmission is changed into UDP multi-link signaling transmission, the UDP transmission is used for replacing the TCP transmission, the signaling transmission speed is ensured, and the network congestion phenomenon is reduced, and then the multi-link cooperation mode is adopted, so that the signaling transmission speed can be further ensured, and the network congestion phenomenon is reduced, and thus, the video network terminal is ensured not to be easily interrupted due to the network congestion after being connected with the video network server.
In an embodiment, in consideration of different signaling functions, different signaling importance levels may be different, and therefore, in order to ensure that important signaling is not lost as much as possible, refer to fig. 3, where fig. 3 is a flowchart of a signaling transmission method according to another embodiment of the present invention. As shown in fig. 3, the method includes the following steps in addition to the steps S21 and S23:
step S221, determining a sending strategy corresponding to the preset signaling according to the importance degree of the preset signaling.
Step S222, sending the preset signaling to the multilink terminal through at least one UDP communication link in the plurality of UDP communication links according to the sending policy.
In general, according to the function or the characteristic of each signaling, the importance degree of each signaling can be known in advance, and then the transmission strategy corresponding to each signaling is determined.
In an implementation manner, the video networking server may provide an operation interface for a user, the operation interface is displayed with a signaling list and a sending policy list, and the user may establish a connection relationship between one signaling in the signaling list and one or more sending policies in the sending policy list according to the importance degree of the signaling.
In another embodiment, an association table between the signaling and the sending policy may be pre-stored in the aggregation server, where the association table is established according to the importance of the signaling, and after the aggregation server receives the preset signaling sent by the video network server, the association table may be searched to determine the sending policy corresponding to the preset signaling.
After the sending strategy corresponding to each signaling is determined, the preset signaling can be sent to the multilink terminal through at least one UDP communication link in the plurality of UDP communication links according to the sending strategy.
In this embodiment, a sending policy corresponding to a preset signaling is determined by presetting an importance degree of the signaling, for example, if the importance degree of the preset signaling is high and cannot be lost, an optimal sending policy may be selected to send, for example, a link with the best signal quality or multiple links may be sent simultaneously, thereby avoiding loss of the signaling.
In one embodiment, the transmission strategy may include a polling transmission strategy, a signal quality best transmission strategy, a multiplexing transmission strategy, a forward error correction strategy, and an encryption transmission strategy.
Specifically, when the sending policy is a polling sending policy, polling each UDP communication link in the plurality of UDP communication links, and sending the preset signaling through the UDP communication link obtained through polling;
in this embodiment, the polling transmission strategy may disperse the transmission of signaling to multiple links, thereby reducing the pressure of a single link and having a certain effect on reducing packet loss.
When the sending strategy is a sending strategy with the best signal quality, determining a UDP communication link with the best signal quality in the plurality of UDP communication links, and sending the preset signaling to the multi-link terminal through the UDP communication link with the best signal quality;
in this embodiment, selecting the UDP communication link with the best signal quality for transmission can effectively reduce packet loss caused by network reasons, and also has a certain effect on reducing packet loss.
When the sending strategy is a multi-channel sending strategy, respectively sending the preset signaling to the multi-link terminal through each UDP communication link in the plurality of UDP communication links;
in this embodiment, the multi-path sending strategy is that all UDP communication links are used to send the preset signaling, and even if some of the UDP communication links suffer from packet loss, the remaining UDP communication links may still send the preset signaling to the multi-link terminal, which may also reduce packet loss.
When the sending strategy is a forward error correction strategy, adding a redundant packet to the preset signaling, and sending the preset signaling added with the redundant packet to the multilink terminal through at least one UDP communication link in the plurality of UDP communication links, so that when the preset signaling loses packets, the multilink terminal can restore the preset signaling according to the redundant packet;
in this embodiment, by using the forward error correction strategy, even if the preset signaling is lost during transmission, the redundant packet can still be used to restore the preset signaling, and the lost packet can also be reduced.
And when the sending strategy is an encryption sending strategy, encrypting the preset signaling, and sending the encrypted preset signaling to the multilink terminal through at least one UDP communication link in the plurality of UDP communication links.
In the embodiment, the preset signaling is encrypted and sent, so that the safety of the preset signaling can be effectively ensured, the preset signaling is prevented from being attacked and modified, and the safety of signaling transmission is effectively ensured.
With reference to the foregoing embodiment, in an implementation manner, the step S222 may specifically include the following steps:
step S222A, when the preset signaling is broadcast addressing signaling, determining to adopt the polling transmission policy.
Step S222B, when the preset signaling is heartbeat signaling, determining to adopt the signal quality best sending strategy.
Step S222C, when the preset signaling is a traffic signaling, determining to adopt the best signal quality transmission policy and the forward error correction policy.
Step S222D, when the preset signaling is a conference control signaling, determining to adopt the multi-path sending policy and the forward error correction policy.
For the broadcast addressing signaling, the video network server issues a broadcast addressing signaling, and the video network terminal replies a reply signaling after receiving the broadcast addressing signaling, but the broadcast addressing signaling is not particularly important, because the video network terminal cannot receive the broadcast signaling, the video network server always broadcasts, so the video network terminal can send the broadcast signaling by adopting a polling sending strategy.
For heartbeat signaling, it is important, but not frequent, that the signaling is interrupted for a period of time, which causes service to stop, so we can send the transmission with the best signal quality.
For the service signaling, the service signaling is important, and a forward error correction strategy plus a signal quality best transmission strategy can be adopted.
For a video networking video conference scene, conference control signaling (for example, signaling for controlling conference switching speakers and the like in the video networking video conference) exists, and for the conference control signaling, a multipath sending strategy and a forward error correction strategy are adopted.
In addition, for the above signaling, in order to ensure the security of signaling transmission, an encryption transmission policy may be added to transmit the signaling.
It should be noted that, the above-mentioned steps S222A-S222D should not be construed as being limited in the sequential execution order.
In addition, considering that the network state between the aggregation server and the multilink terminal may be very poor, even if a corresponding transmission policy is selected according to the importance degree of signaling for transmission, there may be a problem that signaling is lost during link transmission between the aggregation server and the multilink terminal, at this time, in order to continuously maintain the connection between the video network terminal and the video network server, reference is made to fig. 4, and fig. 4 is a flowchart of a signaling transmission method according to another embodiment of the present invention. As shown in fig. 4, the method may further include the following steps in addition to the steps S21-S23:
step S24, when the reply signaling corresponding to the preset signaling is not received from the video network terminal within the preset time, acquiring the reply signaling corresponding to the preset signaling and the preset identifier.
Step S25, sending the obtained reply signaling and a preset identifier to the video network server to maintain the connection between the video network terminal and the video network server, where the preset identifier represents a network state between the aggregation server and the multilink terminal.
In this embodiment, there are two cases where the aggregation server does not receive the reply signaling corresponding to the preset signaling from the video networking terminal within the preset time, one is that the aggregation server is lost in the process of sending the preset signaling to the multilink terminal, at this time, the video networking terminal does not receive the preset signaling, and certainly, the corresponding reply signaling cannot be generated, so the aggregation server cannot receive the reply signaling corresponding to the preset signaling from the video networking terminal within the preset time, and the other is that the aggregation server smoothly sends the preset signaling to the multilink terminal, the video networking server receives the preset signaling and generates the reply signaling corresponding to the preset signaling, the video networking terminal sends the preset signaling to the multilink terminal, the multilink terminal is lost in the process of sending the reply signaling to the aggregation server, and at this time, the aggregation server also cannot receive the reply signaling corresponding to the preset signaling from the video networking terminal within the preset time And (5) making. However, in any case, the aggregation server cannot receive the reply signaling corresponding to the preset signaling from the video network terminal within the preset time, and thus cannot normally send the reply signaling to the video network server, which further causes disconnection between the video network terminal and the video network server, thereby causing ongoing service interruption.
In order to avoid the foregoing situation, in this embodiment, when the aggregation server does not receive the reply signaling corresponding to the preset signaling from the video network terminal within the preset time, the aggregation server may obtain the reply signaling and the preset identifier corresponding to the preset signaling.
Specifically, the aggregation server may pre-store a reply signaling corresponding to each preset signaling, where the pre-stored reply signaling may be used to verify whether a reply signaling generated by the video networking terminal is received, and on the other hand, when the aggregation server does not receive the reply signaling corresponding to the preset signaling from the video networking terminal within a preset time, the aggregation server may obtain the reply signaling, and after obtaining the reply signaling, the aggregation server may send the reply signaling to the video networking server, and the video networking server receives the reply signaling, that is, the video networking terminal is considered to be online, so that the video networking server may maintain the connection between the video networking terminal and the video networking server, so as to ensure that a service is performed normally. That is to say, even if the network state between the aggregation server and the multilink terminal is very bad, which results in the loss of the preset signaling or the reply signaling, in the embodiment of the present application, the aggregation server can send the reply signaling corresponding to the preset signaling to the video network server by obtaining the reply signaling corresponding to the preset signaling, so as to maintain the connection between the video network terminal and the video network server, avoid the ongoing service interruption, and thereby improve the user experience.
In this embodiment, because the aggregation server obtains the reply signaling corresponding to the preset signaling, and also obtains the preset identifier, the preset identifier may also be pre-stored in the aggregation server, and the preset identifier represents the network state between the aggregation server and the multilink terminal, that is, as long as the video networking server receives the preset identifier while receiving the reply signaling, the video networking server can know the network state difference between the aggregation server and the multilink terminal at this time, and the video networking server can make adjustments in time, for example, the traffic volume can be reduced, or the performance of unnecessary traffic is reduced, or a backup data transmission link is enabled.
Referring to fig. 5, fig. 5 is a flowchart illustrating a data transmission method according to another embodiment of the present invention. As shown in fig. 5, taking an example that the video network server sends a preset signaling to the video network terminal and receives a reply signaling from the video network terminal, a complete flow is used to describe the data transmission method of this embodiment. The video network server firstly transmits the signaling to the aggregation server, the aggregation server forwards the signaling to the multilink terminal through at least one UDP communication link in the plurality of UDP communication links, and the multilink terminal sends the dispersed data packets from the aggregation server to the video network terminal after reordering and integrating the dispersed data packets.
(1) The video network server first sends preset signaling to the aggregation server. For example, the preset signaling is 8a01 signaling.
(2) After receiving the 8a01 signaling, the aggregation server determines the transmission strategy of the 8a01 signaling. For example, the transmission policy is a multi-path transmission policy.
(3) The multilink terminal determines whether it can receive the 8a01 signaling transmitted by the aggregation server through the multiplexing policy. If the signaling of 8a01 can be received, step (4) is executed, otherwise step (9) is executed.
(4) The video network terminal receives the 8a01 signaling sent by the multilink terminal.
(5) And the video network terminal generates corresponding reply signaling according to the 8a01 signaling, and sends the reply signaling to the multi-link terminal. For example, the reply signaling is 8a02 signaling.
(6) After the multi-link terminal receives the 8a02 signaling, the transmission strategy of the 8a02 signaling is determined. For example, the transmission policy is a multi-path transmission policy.
(7) The aggregation server determines whether the 8a02 signaling transmitted by the multilink terminal through the multiplexing strategy can be received. If the signaling of 8a02 can be received, step (8) is executed, otherwise step (9) is executed.
(8) The aggregation server sends the 8a02 signaling received from the video network terminal to the video network server.
(9) The aggregation server acquires the self-stored 8a02 signaling and sends the acquired 8a02 signaling to the video networking server.
(10) The video network server receives 8a02 signaling and maintains the connection between the video network terminal and the video network server.
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 of skill 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 embodiments of the invention.
Based on the same technical concept, please refer to fig. 6, which shows a block diagram of a signaling transmission apparatus 600 according to an embodiment of the present invention, which is applied to an aggregation server in a video networking signaling transmission system, where the aggregation server is communicatively connected to a video networking server and is connected to a multi-link terminal through a plurality of UDP communication links, and the multi-link terminal is communicatively connected to the video networking terminal, and the apparatus may specifically include the following modules:
a receiving module 601, configured to receive a preset signaling sent by the video networking server when a connection between the video networking terminal and the video networking server is established;
a first sending module 602, configured to send the preset signaling to the multilink terminal through at least one UDP communication link in the UDP communication links, so that the multilink terminal sends the preset signaling to the video networking terminal;
a second sending module 603, configured to send a reply signaling to the video networking server when receiving the reply signaling corresponding to the preset signaling from the video networking terminal within a preset time, so as to maintain connection between the video networking terminal and the video networking server.
In a preferred embodiment of the present invention, the apparatus further comprises:
the acquisition module is used for acquiring a reply signaling and a preset identifier corresponding to a preset signaling when the reply signaling corresponding to the preset signaling is not received from the video network terminal within the preset time;
and the third sending module is used for sending the acquired reply signaling and a preset identifier to the video network server so as to maintain the connection between the video network terminal and the video network server, wherein the preset identifier represents the network state between the aggregation server and the multilink terminal.
In a preferred embodiment of the present invention, the apparatus further comprises:
the determining module is used for determining a sending strategy corresponding to the preset signaling according to the importance degree of the preset signaling;
the first sending module includes:
and the sending submodule is used for sending the preset signaling to the multilink terminal through at least one UDP communication link in the UDP communication links according to the sending strategy.
In a preferred embodiment of the present invention, the transmission policy includes at least one of: a polling transmission strategy, a signal quality best transmission strategy, a multi-path transmission strategy, a forward error correction strategy and an encryption transmission strategy; the sending submodule is further configured to:
when the sending strategy is a polling sending strategy, polling each UDP communication link in the plurality of UDP communication links, and sending the preset signaling through the UDP communication link obtained by polling;
when the sending strategy is a sending strategy with the best signal quality, determining a UDP communication link with the best signal quality in the plurality of UDP communication links, and sending the preset signaling to the multi-link terminal through the UDP communication link with the best signal quality;
when the sending strategy is a multi-channel sending strategy, respectively sending the preset signaling to the multi-link terminal through each UDP communication link in the plurality of UDP communication links;
when the sending strategy is a forward error correction strategy, adding a redundant packet to the preset signaling, and sending the preset signaling added with the redundant packet to the multilink terminal through at least one UDP communication link in the plurality of UDP communication links, so that when the preset signaling loses packets, the multilink terminal can restore the preset signaling according to the redundant packet;
and when the sending strategy is an encryption sending strategy, encrypting the preset signaling, and sending the encrypted preset signaling to the multilink terminal through at least one UDP communication link in the plurality of UDP communication links.
In a preferred embodiment of the present invention, the determining module is further configured to:
when the preset signaling is broadcast addressing signaling, determining to adopt the polling transmission strategy;
when the preset signaling is heartbeat signaling, determining to adopt the signal quality best sending strategy;
when the preset signaling is service signaling, determining to adopt the best signal quality sending strategy and the forward error correction strategy;
and when the preset signaling is a conference control signaling, determining to adopt the multi-path sending strategy and the forward error correction strategy.
In a preferred embodiment of the present invention, the reply signaling corresponding to the preset signaling is generated and sent by the video network terminal to the multi-link terminal, and then sent by the multi-link terminal to the aggregation server through at least one UDP communication link in the plurality of UDP communication links.
The embodiment of the present invention further provides a signaling transmission apparatus, including:
one or more processors; and
one or more computer-readable media having instructions stored thereon, which when executed by the one or more processors, cause the apparatus to perform a signaling transmission method as in any one of the embodiments of the invention.
The embodiment of the invention also provides a computer readable storage medium, which stores a computer program for enabling a processor to execute the signaling transmission method according to the embodiment of the invention.
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 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 such as high-definition video conferences, video monitoring, intelligent monitoring analysis, emergency command, digital broadcast television, delayed television, network teaching, live broadcast, VOD on demand, television mails, Personal Video Recorder (PVR), intranet (self-office) channels, intelligent video broadcast control, information distribution and the like into a system platform, and realizes high-definition quality video broadcast through a television or a computer.
To enable those skilled in the art to better understand the embodiments of the present invention, the following description is given of 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 video networking technology adopts Packet Switching 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 matching 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. 7, 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.
Visio 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 ethernet gateways), terminals (including various set-top boxes, code boards, memories, etc.). The video network as a whole can be divided into a metropolitan area network (or national network, global network, etc.) and an access network.
1.2 wherein the devices of the access network part can be mainly classified into 3 types: node servers, access switches (including ethernet gateways), terminals (including various set-top boxes, code boards, memories, etc.).
The specific hardware structure of each access network device is as follows:
a node server:
as shown in fig. 8, the system mainly includes a network interface module 801, a switching engine module 802, a CPU module 803, and a disk array module 804;
the network interface module 801, the CPU module 803, and the disk array module 804 all enter the switching engine module 802; the switching engine module 802 performs an operation of looking up the address table 805 on the incoming packet, thereby obtaining the direction information of the packet; and stores the packet in a queue of the corresponding packet buffer 806 based on the packet's steering information; if the queue of the packet buffer 806 is nearly full, discard; the switching engine module 802 polls all packet buffer queues and forwards 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 804 mainly implements control over the hard disk, including initialization, reading and writing operations on the hard disk; the CPU module 803 is mainly responsible for protocol processing with an access switch and a terminal (not shown in the figure), configuring an address table 805 (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 804.
The access switch:
as shown in fig. 9, the network interface module (downlink network interface module 901, uplink network interface module 902), the switching engine module 903 and the CPU module 904 are mainly included;
wherein, a packet (uplink data) coming from the downlink network interface module 901 enters the packet detection module 905; the packet detection module 905 detects whether the Destination Address (DA), the Source Address (SA), the packet type, and the packet length of the packet meet requirements, if so, allocates a corresponding stream identifier (stream-id) and enters the switching engine module 903, otherwise, discards the stream identifier; the packet (downstream data) coming from the upstream network interface module 902 enters the switching engine module 903; the data packet coming from the CPU module 904 enters the switching engine module 903; the switching engine module 903 performs an operation of looking up the address table 906 on the incoming packet, thereby obtaining the direction information of the packet; if the packet entering the switching engine module 903 is from the downstream network interface to the upstream network interface, the packet is stored in the queue of the corresponding packet buffer 907 in association with the stream-id; if the queue of the packet buffer 907 is close to full, it is discarded; if the packet entering the switching engine module 903 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 907 according to the guiding information of the packet; if the queue of the packet buffer 907 is close to full, it is discarded.
The switching engine 903 polls all packet buffer queues in the embodiment of the present invention in 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 908 is configured by the CPU module 904 and generates tokens for packet buffer queues going to the upstream network interface from all downstream network interfaces at programmable intervals to control the rate of upstream forwarding.
The CPU module 904 is mainly responsible for protocol processing with the node server, configuration of the address table 906, and configuration of the code rate control module 908.
Ethernet protocol gateway:
as shown in fig. 10, the system mainly includes a network interface module (a downlink network interface module 1001 and an uplink network interface module 1002), a switching engine module 1003, a CPU module 1004, a packet detection module 1005, a rate control module 1008, an address table 1006, a packet buffer 1007, a MAC adding module 1009, and a MAC deleting module 1010.
Wherein, the data packet coming from the downlink network interface module 1001 enters the packet detection module 1005; the packet detection module 1005 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 deleting module 1010 subtracts MAC DA, MAC SA, length or frame type (2byte), and enters a corresponding receiving buffer, otherwise, the MAC deleting module discards the MAC DA, MAC SA, length or frame type;
the downlink network interface module 1001 detects the transmission 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 transmits the packet.
The other modules in the ethernet protocol gateway function similarly to the access switch.
A terminal:
the system mainly comprises a network interface module, a service processing module and a CPU module; for example, the set-top box mainly comprises a network interface module, a video and audio coding and decoding engine module and a CPU module; the coding board mainly comprises a network interface module, a video and audio coding engine module and a CPU module; the memory mainly comprises a network interface module, a CPU module and a disk array module.
1.3 devices of the metropolitan area network part can be mainly classified into 2 types: node server, node exchanger, metropolitan area server. The node switch mainly comprises a network interface module, a switching engine module and a CPU module; the metropolitan area server mainly comprises a network interface module, a switching engine module and a CPU module.
2. Vission networking data 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:
Figure BDA0002389325220000221
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), and is defined to be 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:
Figure BDA0002389325220000231
namely Destination Address (DA), Source Address (SA), Reserved byte (Reserved), tag, payload (pdu), CRC. The format of the tag may be defined by reference to the following: the tag is 32 bits with the upper 16 bits reserved and only the lower 16 bits used, and its position is between the reserved bytes and payload of the packet.
The 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 identical elements in the process, method, article, or terminal equipment comprising the element.
The signaling transmission method, the signaling transmission apparatus, and the computer-readable storage medium provided by the present invention are described in detail above, and specific examples are applied herein to explain the principles and embodiments of the present invention, and the descriptions of the above embodiments are only used to help understand 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, the specific embodiments and the application range may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (10)

1. A signaling transmission method is applied to an aggregation server in a video networking signaling transmission system, wherein the aggregation server is in communication connection with a video networking server and is connected with a multilink terminal through a plurality of UDP communication links, and the multilink terminal is in communication connection with a video networking terminal, and the method comprises the following steps:
under the condition that the connection between the video network terminal and the video network server is established, receiving a preset signaling sent by the video network server;
sending the preset signaling to the multilink terminal through at least one UDP communication link in the plurality of UDP communication links, so that the multilink terminal sends the preset signaling to the video networking terminal;
and when a reply signaling corresponding to the preset signaling from the video network terminal is received within a preset time, sending the reply signaling to the video network server so as to maintain the connection between the video network terminal and the video network server.
2. The method of claim 1, further comprising:
when a reply signaling corresponding to a preset signaling is not received from the video networking terminal within the preset time, acquiring the reply signaling and a preset identifier corresponding to the preset signaling;
and sending the acquired reply signaling and a preset identifier to the video networking server so as to maintain the connection between the video networking terminal and the video networking server, wherein the preset identifier represents the network state between the aggregation server and the multilink terminal.
3. The method of claim 1, further comprising:
determining a sending strategy corresponding to the preset signaling according to the importance degree of the preset signaling;
the sending the preset signaling to the multilink terminal through at least one UDP communication link of the plurality of UDP communication links includes:
and sending the preset signaling to the multilink terminal through at least one UDP communication link in the plurality of UDP communication links according to the sending strategy.
4. The method of claim 3, wherein the transmission policy comprises at least one of: a polling transmission strategy, a signal quality best transmission strategy, a multi-path transmission strategy, a forward error correction strategy and an encryption transmission strategy;
the sending the preset signaling to the multilink terminal through at least one UDP communication link of the plurality of UDP communication links according to the sending policy includes:
when the sending strategy is a polling sending strategy, polling each UDP communication link in the plurality of UDP communication links, and sending the preset signaling through the UDP communication link obtained by polling;
when the sending strategy is a sending strategy with the best signal quality, determining a UDP communication link with the best signal quality in the plurality of UDP communication links, and sending the preset signaling to the multi-link terminal through the UDP communication link with the best signal quality;
when the sending strategy is a multi-channel sending strategy, respectively sending the preset signaling to the multi-link terminal through each UDP communication link in the plurality of UDP communication links;
when the sending strategy is a forward error correction strategy, adding a redundant packet to the preset signaling, and sending the preset signaling added with the redundant packet to the multilink terminal through at least one UDP communication link in the UDP communication links, so that when the preset signaling loses packets, the multilink terminal can restore the preset signaling according to the redundant packet;
and when the sending strategy is an encryption sending strategy, encrypting the preset signaling, and sending the encrypted preset signaling to the multilink terminal through at least one UDP communication link in the plurality of UDP communication links.
5. The method according to claim 4, wherein determining the sending policy corresponding to the preset signaling according to the signaling importance degree comprises:
when the preset signaling is broadcast addressing signaling, determining to adopt the polling transmission strategy;
when the preset signaling is heartbeat signaling, determining to adopt the signal quality best sending strategy;
when the preset signaling is service signaling, determining to adopt the best signal quality sending strategy and the forward error correction strategy;
and when the preset signaling is a conference control signaling, determining to adopt the multi-path sending strategy and the forward error correction strategy.
6. The method according to claim 1, wherein the reply signaling corresponding to the preset signaling is generated and sent by the internet of view terminal to the multi-link terminal, and then sent by the multi-link terminal to the aggregation server through at least one UDP communication link of the plurality of UDP communication links.
7. A signaling transmission apparatus, applied to an aggregation server in a video networking signaling transmission system, wherein the aggregation server is communicatively connected to a video networking server and is connected to a multilink terminal through a plurality of UDP communication links, and the multilink terminal is communicatively connected to a video networking terminal, the apparatus comprising:
the receiving module is used for receiving a preset signaling sent by the video network server under the condition that the connection between the video network terminal and the video network server is established;
a first sending module, configured to send the preset signaling to the multilink terminal through at least one UDP communication link in the UDP communication links, so that the multilink terminal sends the preset signaling to the video networking terminal;
and the second sending module is used for sending the reply signaling to the video network server when receiving the reply signaling corresponding to the preset signaling from the video network terminal within the preset time so as to maintain the connection between the video network terminal and the video network server.
8. The apparatus of claim 7, further comprising:
the acquisition module is used for acquiring a reply signaling and a preset identifier corresponding to a preset signaling when the reply signaling corresponding to the preset signaling is not received from the video network terminal within the preset time;
and a third sending module, configured to send the obtained reply signaling and a preset identifier to the video networking server, so as to maintain a connection between the video networking terminal and the video networking server, where the preset identifier represents a network state between the aggregation server and the multilink terminal.
9. A signaling transmission apparatus, comprising:
one or more processors; and
one or more computer-readable storage media having instructions stored thereon that, when executed by the one or more processors, cause the apparatus to perform the signaling transmission method of any of claims 1-6.
10. A computer-readable storage medium storing a computer program for causing a processor to execute the signaling transmission method according to any one of claims 1 to 6.
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