CN115426504A - Weak network resisting method based on multi-path network interaction - Google Patents

Weak network resisting method based on multi-path network interaction Download PDF

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CN115426504A
CN115426504A CN202211081440.5A CN202211081440A CN115426504A CN 115426504 A CN115426504 A CN 115426504A CN 202211081440 A CN202211081440 A CN 202211081440A CN 115426504 A CN115426504 A CN 115426504A
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link
video
video frame
delay
transmission
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董羽生
李瑞亮
贾宏伟
郭建君
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Beijing Weiling Times Technology Co Ltd
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Beijing Weiling Times Technology Co Ltd
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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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/21—Server components or server architectures
    • H04N21/218—Source of audio or video content, e.g. local disk arrays
    • H04N21/2187—Live feed
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0823—Errors, e.g. transmission errors
    • H04L43/0829—Packet loss
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0852—Delays
    • 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
    • H04L65/80—Responding to QoS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/14—Multichannel or multilink protocols
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2385—Channel allocation; Bandwidth allocation
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/24—Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth, upstream requests
    • H04N21/2402—Monitoring of the downstream path of the transmission network, e.g. bandwidth available
    • 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]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/478—Supplemental services, e.g. displaying phone caller identification, shopping application
    • H04N21/4781—Games
    • 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
    • H04N21/643—Communication protocols
    • H04N21/6437—Real-time Transport Protocol [RTP]

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Environmental & Geological Engineering (AREA)
  • Computer Security & Cryptography (AREA)
  • Databases & Information Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The application provides a weak network resisting method and device based on multi-path network interaction, which comprises the following steps: when the video is coded, based on the frames of the video, grouping by adopting a preset algorithm to obtain a plurality of video frame groups; sending the video frame group to a plurality of links, wherein each link corresponds to a path of encoder for encoding the video frame group, and the video frame group is sent by encoding through the plurality of links, and the method comprises the following steps: calculating the packet loss rate and the delay of each link, and selecting a sending link according to the packet loss rate and the delay; and calculating the broadband of each link, and taking the link with the broadband higher than the video frame coding use flow as a transmission link. Before coding, the video frame pre-grouping mode is adopted according to the characteristic of multilink sending data, so that video delay and pause are greatly reduced.

Description

Weak network resisting method based on multi-path network interaction
Technical Field
The application belongs to the field of cloud computing, and particularly relates to a weak network resisting method based on multi-path network interaction. The application also relates to a weak network resisting device based on multi-path network interaction.
Background
In the prior art, the operation of using multi-path network links to increase weak network resistance is mostly applied to a live broadcast environment, the delay requirement of the live broadcast environment is much lower than that of a cloud game, so that a method for transmitting data by multi-path links in a live broadcast scene cannot be applied to a cloud game scene.
At present, live streaming mostly depends on rtmp and rtsp protocols which are operated on tcp protocols, and as congestion control of tcp is self-control of a protocol stack, once packet loss or congestion occurs, recovery is required for a long time, so that delay is increased, and the delay is unacceptable in a cloud game scene.
Disclosure of Invention
In order to solve one or more technical problems in the background art, the present application provides a weak network resisting method based on multi-path network interaction. The application also relates to a weak network resisting device based on multi-path network interaction.
The application provides a weak network resisting method based on multi-path network interaction, which comprises the following steps:
when the video is coded, based on the frames of the video, grouping by adopting a preset algorithm to obtain a plurality of video frame groups;
sending the video frame group to a plurality of links, wherein each link corresponds to a path of encoder for encoding the video frame group, and the video frame group is sent by encoding through the plurality of links, and the method comprises the following steps: calculating the packet loss rate and the delay of each link, and selecting a sending link according to the packet loss rate and the delay; and calculating the broadband of each link, and taking the link with the broadband higher than the video frame coding use flow as a transmission link.
Optionally, the preset algorithm includes: a hash algorithm or a solomon algorithm.
Optionally, the method further includes: setting a data transmission expectation, and if the transmission data of the current connection is higher than the transmission expectation, modifying the transmission link.
Optionally, the video is encoded as cloud game video data.
Optionally, the video coding includes a search frame and a key frame.
The present application further provides a weak network resisting device based on multi-path network interaction, including:
the encoding module is used for grouping by adopting a preset algorithm based on the frames of the video to obtain a plurality of video frame groups when the video is encoded;
a processing module, configured to send the video frame group to a multilink, where each link corresponds to a path of encoder for encoding the video frame group, and send the encoded video frame group through the multilink, including: calculating the packet loss rate and the delay of each link, and selecting a transmission link according to the packet loss rate and the delay; and calculating the broadband of each link, and taking the link with the broadband higher than the video frame coding use flow as a transmission link.
Optionally, the preset algorithm includes: a hash algorithm or a solomon algorithm.
Optionally, the method further includes:
and the judging module is used for setting data transmission expectation and modifying the transmission link if the transmission data of the current connection is higher than the transmission expectation.
Optionally, the video is encoded as cloud game video data.
Optionally, the video coding includes a search frame and a key frame.
The application has the advantages over the prior art that:
the application provides a weak network resisting method based on multi-path network interaction, which comprises the following steps: when the video is coded, based on the frames of the video, grouping by adopting a preset algorithm to obtain a plurality of video frame groups; sending the video frame group to a plurality of links, wherein each link corresponds to a path of encoder for encoding the video frame group, and the video frame group is sent by encoding through the plurality of links, and the method comprises the following steps: calculating the packet loss rate and the delay of each link, and selecting a sending link according to the packet loss rate and the delay; and calculating the broadband of each link, and taking the link with the broadband higher than the video frame coding use flow as a sending link. Before coding, the video frame pre-grouping mode is adopted according to the characteristic of multilink sending data, so that video delay and pause are greatly reduced.
Drawings
Fig. 1 is a schematic diagram of a weak network resisting process based on multi-path network interaction in the present application.
Fig. 2 is a connection diagram of a cloud server and a user side in the present application.
Fig. 3 is a schematic diagram of a weak network resisting device based on multi-path network interaction in the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The application provides a weak network resisting method based on multi-path network interaction, which comprises the following steps: when the video is coded, based on the frames of the video, grouping by adopting a preset algorithm to obtain a plurality of video frame groups; sending the video frame group to a plurality of links, wherein each link corresponds to a path of encoder for encoding the video frame group, and the video frame group is sent by encoding through the plurality of links, and the method comprises the following steps: calculating the packet loss rate and the delay of each link, and selecting a transmission link according to the packet loss rate and the delay; and calculating the broadband of each link, and taking the link with the broadband higher than the video frame coding use flow as a transmission link. Before coding, the video frame pre-grouping mode is adopted according to the characteristic of multilink sending data, so that video delay and pause are greatly reduced.
Fig. 1 is a schematic diagram of a weak network resisting process based on multi-path network interaction in the present application.
Referring to fig. 1, in video encoding, in S101, a plurality of video frame groups are obtained by grouping based on frames of a video according to a preset algorithm.
The video is a video stream generated by a cloud game in a cloud server, the cloud game is a program or software running in the cloud, and receives an instruction of a user side connected with the cloud server and sends a running result of the cloud game to the user side.
In the cloud game, in order to achieve better game experience, the data transmission delay and the card pause have higher requirements, especially in some competitive games with strong real-time performance, and the network delay during data transmission of the service end and the user end of the cloud game has decisive influence on the game experience.
Fig. 2 is a connection diagram of a cloud server and a user side in the present application.
Referring to fig. 2, the cloud server is connected to the user side via a public internet, and routing is implemented via a gateway between the cloud server and the public internet, in which the gateway can obtain data processing states of other gateways, that is, saturation of data processed by each gateway, and dynamically adjust a gateway that routes the video encoded data according to real-time data processing states of multiple gateways.
The cloud server firstly creates a virtual machine according to an instruction of a client, and the virtual machine starts and runs a cloud game after reading account data corresponding to the client. At the same time, the virtual machine will establish a connection with the client.
And the virtual machine runs the cloud game to generate a game rendering picture, and the rendering picture is grouped by adopting a preset algorithm based on the frames of the video during encoding to obtain a plurality of video frame groups. Preferably, the video coding includes a search frame and a key frame.
Specifically, the video frames are grouped, each link corresponds to one encoder, and the video frames are grouped according to a hash algorithm or a Solomon algorithm (Solomon).
Referring to fig. 1, in step S102, sending the video frame group to a plurality of links, where each link corresponds to a path of encoder for encoding the video frame group, and sending the encoded video frame group through the plurality of links, includes: calculating the packet loss rate and the delay of each link, and selecting a sending link according to the packet loss rate and the delay; and calculating the broadband of each link, and taking the link with the broadband higher than the video frame coding use flow as a transmission link.
The video frames are grouped and coded, the video data are sent according to the link corresponding to the coder of the grouped coding, and the video data sent by multiple links can greatly reduce delay and improve transmission efficiency. Meanwhile, due to the existence of the packets, when the network delay or the blocking of one link occurs, the video frame group can be directly discarded without affecting other links, so that the video frame rate is only reduced, and the delay or the blocking cannot be caused.
Before or during the transmission of the video frame group, the packet loss rate and the delay of each link may be calculated, and link selection is performed according to the packet loss rate and the delay, including converting video data encoded by one link encoder to another link for transmission.
The packet loss rate and the delay in the present application may be calculated according to the following formulas:
Figure BDA0003833138760000041
Figure BDA0003833138760000042
wherein, the L is the packet loss ratio, the n represents a plurality of time periods participating in calculation, and the C is a -C b Indicating that a transmitted packet and a received packet are different when data is transmitted, and i indicates a time period for the ith parameter calculation.
Further, the delay may be obtained directly from the ping value.
And finally, judging whether the packet loss rate and the delay meet preset threshold values.
In the application, each link is sorted according to the packet loss rate and the delay, then the link with the packet loss rate and the delay not meeting the preset threshold is provided, and finally the optimal link for transmitting the video frame group is selected according to the sorting.
When the link performs data transmission, it is further required to determine whether the link can effectively transmit the data, that is, whether the broadband of the link can satisfy the transmission of the video frame packet.
Specifically, the broadband of each link is calculated, and the link with the broadband higher than the video frame coding use flow is used as a sending link.
Further, when selecting links, each link may be predicted, that is, bandwidth estimation may be performed on an unusual link, and when transmission data of the link is higher than the predicted bandwidth, partial transmission may be performed by using another connection. Packet loss and delay caused by flow wave peaks are avoided as much as possible.
The present application further provides a weak network resisting device based on multi-path network interaction, including: an encoding module 301 and a processing module 302.
Fig. 3 is a schematic diagram of a weak network resisting device based on multi-path network interaction in the present application.
Referring to fig. 3, the encoding module 301 is configured to, during video encoding, group the video frames by using a preset algorithm to obtain a plurality of video frame groups.
The video is a video stream generated by a cloud game in a cloud server, the cloud game is a program or software running in the cloud, and receives an instruction of a user side connected with the cloud server and sends a running result of the cloud game to the user side.
In the cloud game, in order to achieve better game experience, the data transmission delay and the card pause have higher requirements, especially in some competitive games with strong real-time performance, and the network delay during data transmission of the service end and the user end of the cloud game has decisive influence on the game experience.
The cloud server is connected with the user side through a public internet, routing is achieved through a gateway between the cloud server and the public internet, in the process, the gateway can obtain other gateway data processing states, namely saturation of data processed by each gateway, and the gateway for routing the video coding data is dynamically adjusted according to real-time data processing states of the gateways.
The cloud server firstly creates a virtual machine according to an instruction of a client, and the virtual machine starts and runs a cloud game after reading account data corresponding to the client. At the same time, the virtual machine will establish a connection with the client.
And the virtual machine runs the cloud game to generate a game rendering picture, and the rendering picture is grouped by adopting a preset algorithm based on the frames of the video during coding to obtain a plurality of video frame groups. Preferably, the video coding includes a search frame and a key frame.
Specifically, the video frames are grouped, each link corresponds to one encoder, and the video frames are grouped according to a hash algorithm or a Solomon algorithm (Solomon).
Referring to fig. 3, the processing module 302 is configured to send the video frame group to a multilink, where each of the links corresponds to a path of encoding performed by an encoder on the video frame group, and send the encoded video frame group through the multilink, and includes: calculating the packet loss rate and the delay of each link, and selecting a sending link according to the packet loss rate and the delay; and calculating the broadband of each link, and taking the link with the broadband higher than the video frame coding use flow as a sending link.
The video frames are grouped and coded, the video data are sent according to the link corresponding to the coder of the grouped coding, and the video data sent by multiple links can greatly reduce delay and improve transmission efficiency. Meanwhile, due to the existence of the packets, when the network delay or the jam of one link occurs, the video frame group can be directly discarded without influencing other links, so that the video frame rate is only reduced without causing the delay or the jam.
Before or during the transmission of the video frame group, the packet loss rate and the delay of each link may be calculated, and link selection is performed according to the packet loss rate and the delay, including converting video data encoded by one link encoder to another link for transmission.
The packet loss rate and the delay in the present application may be calculated according to the following formulas:
Figure BDA0003833138760000061
Figure BDA0003833138760000062
wherein, the L is the packet loss rate, the n represents a plurality of time periods participating in calculation, and the C is a -C b Indicating that a transmitted packet and a received packet are different when data is transmitted, and i indicates a time period for the ith parameter calculation.
Further, the delay may be obtained directly from the ping value.
And finally, judging whether the packet loss rate and the delay meet preset thresholds or not.
In the application, each link is sorted according to the packet loss rate and the delay, then the link with the packet loss rate and the delay not meeting the preset threshold is provided, and finally the optimal link for transmitting the video frame group is selected according to the sorting.
When the link performs data transmission, it is further required to determine whether the link can effectively transmit the data, that is, whether the broadband of the link can satisfy the transmission of the video frame packet.
Specifically, the broadband of each link is calculated, and the link with the broadband higher than the video frame coding use flow is used as a sending link.
Further, when selecting links, each link may be predicted, that is, bandwidth estimation may be performed on an unusual link, and when transmission data of the link is higher than the predicted bandwidth, partial transmission may be performed by using another connection. Packet loss and delay caused by flow wave peaks are avoided as much as possible.

Claims (10)

1. A weak network resisting method based on multi-path network interaction is characterized by comprising the following steps:
when the video is coded, based on the frames of the video, grouping by adopting a preset algorithm to obtain a plurality of video frame groups;
sending the video frame group to a plurality of links, wherein each link corresponds to a path of encoder for encoding the video frame group, and the video frame group is sent by encoding through the plurality of links, and the method comprises the following steps: calculating the packet loss rate and the delay of each link, and selecting a transmission link according to the packet loss rate and the delay; and calculating the broadband of each link, and taking the link with the broadband higher than the video frame coding use flow as a sending link.
2. The multi-path network interaction-based weak network resisting method according to claim 1, wherein the preset algorithm comprises: a hash algorithm or a solomon algorithm.
3. The weak network immunity method based on multi-path network interaction as claimed in claim 1, further comprising: setting a data transmission expectation, and if the transmission data of the current connection is higher than the transmission expectation, modifying the transmission link.
4. The multi-channel network interaction based weak network resisting method as claimed in claim 1, wherein the video is encoded as cloud game video data.
5. The multi-channel network interaction based weak network resisting method as claimed in claim 1, wherein the video coding comprises a search frame and a key frame.
6. A weak network resisting device based on multi-path network interaction is characterized by comprising:
the encoding module is used for grouping by adopting a preset algorithm based on the frames of the video during video encoding to obtain a plurality of video frame groups;
a processing module, configured to send the video frame group to a plurality of links, where each link corresponds to a path of encoder for encoding the video frame group, and send the encoded video frame group through the plurality of links, and the processing module includes: calculating the packet loss rate and the delay of each link, and selecting a transmission link according to the packet loss rate and the delay; and calculating the broadband of each link, and taking the link with the broadband higher than the video frame coding use flow as a sending link.
7. The weak network apparatus based on multi-channel network interaction of claim 6, wherein the preset algorithm comprises: a hash algorithm or a solomon algorithm.
8. The apparatus of claim 6, further comprising:
and the judging module is used for setting data transmission expectation and modifying the transmission link if the transmission data of the current connection is higher than the transmission expectation.
9. The multi-channel network interaction-based weak network device as claimed in claim 6, wherein the video is encoded as cloud game video data.
10. The multi-channel network interaction-based weak network resisting device as claimed in claim 6, wherein the video coding comprises a search frame and a key frame.
CN202211081440.5A 2022-09-05 2022-09-05 Weak network resisting method based on multi-path network interaction Pending CN115426504A (en)

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Publication number Priority date Publication date Assignee Title
CN101360054A (en) * 2008-09-26 2009-02-04 腾讯科技（深圳）有限公司 Data transmission system and method
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