CN110572780A - method, device, equipment and medium for adjusting transmission rate of video group call service - Google Patents

method, device, equipment and medium for adjusting transmission rate of video group call service Download PDF

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Publication number
CN110572780A
CN110572780A CN201810572914.3A CN201810572914A CN110572780A CN 110572780 A CN110572780 A CN 110572780A CN 201810572914 A CN201810572914 A CN 201810572914A CN 110572780 A CN110572780 A CN 110572780A
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China
Prior art keywords
current
rate
code rate
resolution
target
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CN201810572914.3A
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CN110572780B (en
Inventor
方伟
鲜柯
王亮
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Chengdu Dingqiao Communication Technology Co Ltd
TD Tech Chengdu Co Ltd
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Chengdu Dingqiao Communication Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
    • H04N7/147—Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0289—Congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/10—Flow control between communication endpoints
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08—User group management

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention provides a method, a device, equipment and a medium for adjusting the transmission rate of a video group call service, wherein the method comprises the following steps: calculating the current downlink satisfaction rate; and reporting the current downlink satisfaction rate to a server so that the server calculates the current downlink expected packet loss rate according to the current downlink satisfaction rate, and sends the current downlink expected packet loss rate to the talkback user equipment, and the talkback user equipment adjusts the current sending rate according to the current downlink expected packet loss rate. When congestion occurs in the downlink transmission bandwidth, the network side equipment can quickly acquire the state and inform the state to the talkback user equipment, so that the talkback user equipment can adjust the current sending rate in real time according to the current downlink expected packet loss rate, the timeliness of adjusting the transmission rate is improved, and the video quality perception before the transmission rate is adjusted is enhanced.

Description

Method, device, equipment and medium for adjusting transmission rate of video group call service
Technical Field
the embodiment of the invention relates to the technical field of communication, in particular to a method, a device, equipment and a medium for adjusting the transmission rate of a video group call service.
Background
the working mode of the video group call service is that a plurality of users in a group carry out point-to-multipoint video call through user equipment. The main user equipment uploads the video pictures to the network side equipment, and the network side equipment simultaneously transmits the same video pictures to the plurality of receiving user equipment. This mode of operation can significantly reduce wireless transmission bandwidth consumption.
However, in the video group call service, the network side device simultaneously transmits video pictures to the multiple receiving user devices by using the downlink shared channel, and the multiple receiving user devices do not have an uplink feedback channel to the network side device, so that the master user device cannot be notified to adjust the sending rate to match the transmission capability in the scene of transmission bandwidth congestion, and the transmitted video is prone to screen-splash and blocking.
in order to overcome the phenomenon that a transmitted video is easy to be subjected to screen-splash and unsmooth, an uplink feedback channel is generally established between a plurality of receiving user equipment and network side equipment in the prior art. And reporting the packet loss rate by the receiving user equipment, and triggering the speaker user equipment to adjust the sending rate after the arrival. This approach has poor timeliness, resulting in poor video quality perception prior to transmission rate adjustment.
disclosure of Invention
the embodiment of the invention provides a method, a device, equipment and a medium for adjusting the transmission rate of a video group call service, which solve the technical problems of poor timeliness of sending rate adjustment and poor video quality perception before sending rate adjustment in the prior art.
In a first aspect, an embodiment of the present invention provides a method for adjusting a transmission rate of a video group call service, which is applied to a base station, and includes:
calculating the current downlink satisfaction rate;
reporting the current downlink satisfaction rate to a server so that the server calculates the current downlink expected packet loss rate according to the current downlink satisfaction rate, and sending the current downlink expected packet loss rate to a main user device, wherein the main user device adjusts the current sending rate according to the current downlink expected packet loss rate.
Further, the calculating the current downlink satisfaction rate according to the method specifically includes:
Acquiring the data volume transferred from the cache in the current statistical period, the data volume reaching a wireless link layer and the residual data volume in the cache;
and calculating the current downlink satisfaction rate according to the data volume transferred from the cache, the data volume reaching the wireless link layer and the residual data volume in the cache.
Further, the method as described above, before sending the current downlink satisfaction rate to the server, further comprising:
and carrying out filtering processing on the current downlink satisfaction rate.
In a second aspect, an embodiment of the present invention further provides a method for adjusting a transmission rate of a video group call service, which is applied to a server, and includes:
receiving the current downlink satisfaction rate reported by each base station;
calculating the current downlink expected packet loss rate according to the current downlink satisfaction rate;
And sending the current downlink expected packet loss rate to the talkback user equipment, so that the talkback user equipment adjusts the current sending rate according to the current downlink expected packet loss rate.
Further, the calculating a current downlink expected packet loss rate according to the current downlink satisfaction rate according to the method specifically includes:
Calculating the current downlink average satisfaction rate of the whole network according to the current downlink satisfaction rate;
And calculating the current downlink expected packet loss rate according to the current overall network downlink average satisfaction rate.
further, the sending the current downlink expected packet loss rate to the user equipment for calling specifically includes:
Converting the current downlink expected packet loss rate into a packet loss rate field in a receiving report;
And sending the receiving report to a main speaking user device.
In a third aspect, an embodiment of the present invention further provides a method for adjusting a transmission rate of a video group call service, where the method is applied to a user equipment for calling, and includes:
Receiving the current downlink expected packet loss rate sent by a server;
judging whether to adjust the current sending rate according to the current downlink expected packet loss rate and a preset packet loss rate threshold;
And if the current sending rate is determined to be adjusted, adjusting the current sending rate to a target sending rate.
further, in the method, the determining whether to adjust the current transmission rate according to the current downlink expected packet loss rate and a preset packet loss rate threshold specifically includes:
If the current downlink expected packet loss rate is greater than or equal to a first preset packet loss rate threshold, determining to reduce the current sending rate;
If the current downlink expected packet loss rate is less than or equal to a second preset packet loss rate threshold, determining to adjust the current sending rate;
if the current downlink expected packet loss rate is smaller than a first preset packet loss rate threshold and larger than a second preset packet loss rate threshold, determining not to adjust the current transmission rate;
Wherein the current transmission rate comprises: current resolution and current code rate.
Further, the method as described above, after determining to adjust the current sending rate downward, further comprising:
Judging whether the current code rate is the minimum code rate of the current resolution;
if the current code rate is not the minimum code rate of the current resolution, determining to lower the current code rate, and determining a first target code rate after the lower reduction;
and if the current code rate is the minimum code rate of the current resolution, determining to reduce the current resolution and the current code rate, and determining a first target resolution and a second target code rate after reducing.
Further, the determining the first target code rate after the down-regulation according to the method specifically includes:
Acquiring the maximum code rate of the current resolution, the minimum code rate of the current resolution, the target code rate of the last adjustment, a code rate down-regulation step factor, a minimum down-regulation step factor and a packet loss rate down-regulation margin factor;
And calculating the first target code rate after the down-regulation according to the maximum code rate of the current resolution, the minimum code rate of the current resolution, the target code rate of the last adjustment, the code rate down-regulation step factor, the minimum down-regulation step factor and the packet loss rate down-regulation margin factor.
further, the determining the first target resolution and the second target bitrate after the down-regulation according to the method specifically includes:
Judging the size relation between the current code rate and the minimum code rate in the current resolution and the lower N-level resolution;
if the current code rate is smaller than the minimum code rate of the current resolution and larger than the minimum code rate in the next-level resolution, determining the first target resolution to be adjusted downwards as the next-level resolution;
If the current code rate is less than or equal to the minimum code rate in the lower N-level resolution and greater than the minimum code rate in the lower N + 1-level resolution, determining that the first target resolution to be adjusted downwards is the lower N-level resolution, wherein N is an integer greater than 1;
And determining a second target code rate according to the first target code rate and the minimum code rate in the target resolution.
Further, the method as described above, after determining to adjust up the current transmission rate, further comprising:
If the current resolution is the maximum resolution and the current code rate is smaller than the maximum code rate of the maximum resolution, determining to adjust the current code rate upwards, and determining a third target code rate after the adjustment;
And if the current resolution is not the maximum resolution, determining to adjust the current resolution and the current code rate, and determining a second target resolution and a fourth target code rate after the adjustment.
further, the determining the third target code rate after the up-regulation according to the method specifically includes:
Acquiring the maximum code rate of the current resolution, the minimum code rate of the current resolution, the target code rate of the last adjustment and the code rate up-regulation step length factor;
and calculating the third target code rate after the up-regulation according to the maximum code rate of the current resolution, the minimum code rate of the current resolution, the target code rate of the last regulation and the code rate up-regulation step length factor.
Further, the determining the second target resolution and the fourth target bitrate after the up-regulation according to the method specifically includes:
Judging the size relationship between the current code rate and the minimum code rate in the upper M-level resolution;
If the current code rate is greater than the minimum code rate in the upper M-level resolution and less than the minimum code rate in the upper M + 1-level resolution, determining that the second target resolution which is adjusted upwards is the upper M-level resolution, wherein M is an integer greater than 0;
If the current code rate is larger than the minimum code rate in the maximum resolution, determining the second target resolution of the up-regulation as the maximum resolution;
and determining a fourth target code rate according to the maximum code rate in the second target resolution, the minimum code rate in the second target resolution and the third target code rate.
Further, in the method described above, if it is determined to adjust the current sending rate, adjusting the current sending rate to the target sending rate specifically includes:
If determining to down-regulate or up-regulate the current code rate in the current sending rate, then down-regulating the current code rate to a first target code rate or up-regulating the current code rate to a third target code rate;
And if the current resolution and the current code rate in the current sending rate are determined to be adjusted downwards or upwards, the current resolution is adjusted downwards to the first target resolution, the current code rate is adjusted downwards to the second target code rate, or the current resolution is adjusted upwards to the second target resolution, and the current code rate is adjusted upwards to the fourth target code rate.
in a fourth aspect, an embodiment of the present invention provides an apparatus for adjusting a transmission rate of a video group call service at a base station side, including:
The calculation module is used for calculating the current downlink satisfaction rate;
And the reporting module is used for reporting the current downlink satisfaction rate to a server so that the server calculates the current downlink expected packet loss rate according to the current downlink satisfaction rate, and sends the current downlink expected packet loss rate to the talkback user equipment, and the talkback user equipment adjusts the current sending rate according to the current downlink expected packet loss rate.
further, in the apparatus as described above, the calculation module is specifically configured to:
Acquiring the data volume transferred from the cache in the current statistical period, the data volume reaching a wireless link layer and the residual data volume in the cache; and calculating the current downlink satisfaction rate according to the data volume transferred from the cache, the data volume reaching the wireless link layer and the residual data volume in the cache.
Further, the apparatus as described above, further comprising:
And the filtering module is used for filtering the current downlink satisfaction rate.
In a fifth aspect, an embodiment of the present invention further provides a device for adjusting a transmission rate of a video group call service on a server side, where the device includes:
A receiving module, configured to receive a current downlink satisfaction rate reported by each base station;
the calculation module is used for calculating the current downlink expected packet loss rate according to the current downlink satisfaction rate;
And the sending module is used for sending the current downlink expected packet loss rate to the talkback user equipment so that the talkback user equipment can adjust the current sending rate according to the current downlink expected packet loss rate.
further, in the apparatus as described above, the calculation module is specifically configured to:
calculating the current downlink average satisfaction rate of the whole network according to the current downlink satisfaction rate; and calculating the current downlink expected packet loss rate according to the current overall network downlink average satisfaction rate.
Further, in the apparatus described above, the sending module is specifically configured to:
Converting the current downlink expected packet loss rate into a packet loss rate field in a receiving report; and sending the receiving report to a main speaking user device.
in a sixth aspect, an embodiment of the present invention further provides an apparatus for adjusting a transmission rate of a video group call service on a user equipment side, where the apparatus includes:
the receiving module is used for receiving the current downlink expected packet loss rate sent by the server;
the judging module is used for judging whether to adjust the current sending rate according to the current downlink expected packet loss rate and a preset packet loss rate threshold;
And the adjusting module is used for adjusting the current sending rate to a target sending rate if the current sending rate is determined to be adjusted.
further, in the apparatus described above, the determining module is specifically configured to:
If the current downlink expected packet loss rate is greater than or equal to a first preset packet loss rate threshold, determining to reduce the current sending rate; if the current downlink expected packet loss rate is less than or equal to a second preset packet loss rate threshold, determining to adjust the current sending rate; if the current downlink expected packet loss rate is smaller than a first preset packet loss rate threshold and larger than a second preset packet loss rate threshold, determining not to adjust the current transmission rate;
wherein the current transmission rate comprises: current resolution and current code rate.
further, the apparatus as described above, further comprising: a first determination module and a second determination module;
The judging module is further configured to judge whether the current code rate is the minimum code rate of the current resolution;
the first determining module is configured to determine to lower the current code rate and determine a first target code rate after the lower reduction if the current code rate is not the minimum code rate of the current resolution;
and the second determining module is configured to determine to lower the current resolution and the current code rate, and determine a first target resolution and a second target code rate after the lowering if the current code rate is the minimum code rate of the current resolution.
Further, in the apparatus described above, the first determining module is specifically configured to:
Acquiring the maximum code rate of the current resolution, the minimum code rate of the current resolution, the target code rate of the last adjustment, a code rate down-regulation step factor, a minimum down-regulation step factor and a packet loss rate down-regulation margin factor; and calculating the first target code rate after the down-regulation according to the maximum code rate of the current resolution, the minimum code rate of the current resolution, the target code rate of the last adjustment, the code rate down-regulation step factor, the minimum down-regulation step factor and the packet loss rate down-regulation margin factor.
Further, in the apparatus described above, the second determining module is specifically configured to:
Judging the size relation between the current code rate and the minimum code rate in the current resolution and the lower N-level resolution; if the current code rate is smaller than the minimum code rate of the current resolution and larger than the minimum code rate in the next-level resolution, determining the first target resolution to be adjusted downwards as the next-level resolution; if the current code rate is less than or equal to the minimum code rate in the lower N-level resolution and greater than the minimum code rate in the lower N + 1-level resolution, determining that the first target resolution to be adjusted downwards is the lower N-level resolution, wherein N is an integer greater than 1; and determining a second target code rate according to the first target code rate and the minimum code rate in the target resolution.
Further, the apparatus as described above, further comprising: a third determination module and a fourth determination module;
The third determining module is configured to determine to adjust the current code rate upward and determine a third target code rate after the adjustment, if the current resolution is the maximum resolution and the current code rate is smaller than the maximum code rate of the maximum resolution;
and the fourth determining module is used for determining to adjust the current resolution and the current code rate upwards and determining the second target resolution and the fourth target code rate after the adjustment if the current resolution is not the maximum resolution.
Further, in the apparatus described above, the third determining module is specifically configured to:
Acquiring the maximum code rate of the current resolution, the minimum code rate of the current resolution, the target code rate of the last adjustment and the code rate up-regulation step length factor; and calculating the third target code rate after the up-regulation according to the maximum code rate of the current resolution, the minimum code rate of the current resolution, the target code rate of the last regulation and the code rate up-regulation step length factor.
Further, in the apparatus described above, the fourth determining module is specifically configured to:
judging the size relationship between the current code rate and the minimum code rate in the upper M-level resolution; if the current code rate is greater than the minimum code rate in the upper M-level resolution and less than the minimum code rate in the upper M + 1-level resolution, determining that the second target resolution which is adjusted upwards is the upper M-level resolution, wherein M is an integer greater than 0; if the current code rate is larger than the minimum code rate in the maximum resolution, determining the second target resolution of the up-regulation as the maximum resolution; and determining a fourth target code rate according to the maximum code rate in the second target resolution, the minimum code rate in the second target resolution and the third target code rate.
Further, the adjusting module is specifically configured to:
if determining to down-regulate or up-regulate the current code rate in the current sending rate, then down-regulating the current code rate to a first target code rate or up-regulating the current code rate to a third target code rate; and if the current resolution and the current code rate in the current sending rate are determined to be adjusted downwards or upwards, the current resolution is adjusted downwards to the first target resolution, the current code rate is adjusted downwards to the second target code rate, or the current resolution is adjusted upwards to the second target resolution, and the current code rate is adjusted upwards to the fourth target code rate.
In a seventh aspect, an embodiment of the present invention provides a network device, including:
A memory, a processor, and a computer program;
wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method of any of the above first aspects.
In an eighth aspect, an embodiment of the present invention provides a network device, including:
A memory, a processor, and a computer program;
Wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method of any of the second aspects above.
In a ninth aspect, an embodiment of the present invention provides a terminal device, including:
a memory, a processor, and a computer program;
Wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method of any of the above third aspects.
In a tenth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, the computer program being executed by a processor to implement the method according to any one of the first aspect.
In an eleventh aspect, the present invention provides a computer-readable storage medium, wherein a computer program is stored thereon, and the computer program is executed by a processor to implement the method according to any one of the second aspect.
In a twelfth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored thereon, and the computer program is executed by a processor to implement the method according to any one of the above third aspects.
The embodiment of the invention provides a method, a device, equipment and a medium for adjusting the transmission rate of a video group call service, which calculates the current downlink satisfaction rate; and reporting the current downlink satisfaction rate to a server so that the server calculates the current downlink expected packet loss rate according to the current downlink satisfaction rate, and sends the current downlink expected packet loss rate to the talkback user equipment, and the talkback user equipment adjusts the current sending rate according to the current downlink expected packet loss rate. When congestion occurs in the downlink transmission bandwidth, the network side equipment can quickly acquire the state and inform the state to the talkback user equipment, so that the talkback user equipment can adjust the current sending rate in real time according to the current downlink expected packet loss rate, the timeliness of adjusting the transmission rate is improved, and the video quality perception before the transmission rate is adjusted is enhanced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart of a first embodiment of a method for adjusting a transmission rate of a video group call service according to the present invention;
Fig. 2 is a flowchart of a second embodiment of a method for adjusting the transmission rate of the video group call service according to the present invention;
Fig. 3 is a flowchart of a third embodiment of a method for adjusting the transmission rate of the video group call service according to the present invention;
fig. 4 is a flowchart of a fourth embodiment of the method for adjusting the transmission rate of the video group call service according to the present invention;
Fig. 5 is a flowchart of a fifth embodiment of a method for adjusting the transmission rate of the video group call service according to the present invention;
Fig. 6 is a flowchart of a sixth embodiment of a method for adjusting the transmission rate of the video group call service according to the present invention;
Fig. 7 is a schematic structural diagram of a first embodiment of an apparatus for adjusting transmission rate of a video group call service at a base station side according to the present invention;
fig. 8 is a schematic structural diagram of a second embodiment of an apparatus for adjusting transmission rate of a video group call service at a base station side according to the present invention;
Fig. 9 is a schematic structural diagram of a first embodiment of an apparatus for adjusting transmission rate of a video group call service at a server side according to the present invention;
Fig. 10 is a schematic structural diagram of a first apparatus for adjusting the transmission rate of the video group call service at the side of the user equipment for mainly speaking according to the present invention;
Fig. 11 is a schematic structural diagram of a second embodiment of an apparatus for adjusting the transmission rate of the video group call service at the side of the user equipment for mainly speaking according to the present invention;
FIG. 12 is a diagram illustrating a first embodiment of a network device;
Fig. 13 is a schematic structural diagram of a second network device according to the embodiment of the present invention;
fig. 14 is a schematic structural diagram of a terminal device according to a first embodiment of the present invention.
Detailed Description
in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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 invention.
it should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
the word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
Fig. 1 is a flowchart of a first embodiment of a method for adjusting a transmission rate of a video group call service according to the present invention, and as shown in fig. 1, an implementation subject of the embodiment is an apparatus for adjusting a transmission rate of a video group call service at a base station side, and the apparatus for adjusting a transmission rate of a video group call service at a base station side may be integrated in a base station. The method for adjusting the transmission rate of the video group call service provided in this embodiment is applied to a base station, and the method for adjusting the transmission rate of the video group call service provided in this embodiment includes the following steps.
and step 101, calculating the current downlink satisfaction rate.
Specifically, in this embodiment, the current downlink satisfaction rate is the downlink satisfaction rate of the current statistical period. The current downlink satisfaction rate can be obtained by calculating the data volume transferred from the cache, the data volume reaching the wireless link layer and the data volume remaining in the cache in the current statistical period. The data amount may also be calculated by other data amounts, which is not limited in this embodiment.
And 102, reporting the current downlink satisfaction rate to a server so that the server calculates the current downlink expected packet loss rate according to the current downlink satisfaction rate, and sending the current downlink expected packet loss rate to the talkback user equipment, wherein the talkback user equipment adjusts the current sending rate according to the current downlink expected packet loss rate.
Specifically, in this embodiment, the current downlink satisfaction rate may be carried in a message, and the current downlink satisfaction rate is reported to the server through the message. After the server receives the current downlink satisfaction rate, the current overall network downlink average satisfaction rate is calculated according to the current downlink satisfaction rate, and the current downlink expected packet loss rate is calculated according to the current overall network downlink average satisfaction rate. And sending the current downlink expected packet loss rate to the talkback user equipment, so that the talkback user equipment adjusts the current sending rate according to the current downlink expected packet loss rate and a preset packet loss rate threshold.
The method for adjusting the transmission rate of the video group call service provided by the embodiment is applied to a base station, and calculates the current downlink satisfaction rate; and reporting the current downlink satisfaction rate to a server so that the server calculates the current downlink expected packet loss rate according to the current downlink satisfaction rate, and sends the current downlink expected packet loss rate to the talkback user equipment, and the talkback user equipment adjusts the current sending rate according to the current downlink expected packet loss rate. When congestion occurs in the downlink transmission bandwidth, the network side equipment can quickly acquire the state and inform the state to the talkback user equipment, so that the talkback user equipment can adjust the current sending rate in real time according to the current downlink expected packet loss rate, the timeliness of adjusting the transmission rate is improved, and the video quality perception before the transmission rate is adjusted is enhanced.
Fig. 2 is a flowchart of a second method for adjusting the transmission rate of the video group call service according to the present invention, and as shown in fig. 2, the method for adjusting the transmission rate of the video group call service provided in this embodiment is further refined in step 101 on the basis of the first method for adjusting the transmission rate of the video group call service according to the present invention, and further includes a step of performing filtering processing on the current downlink satisfaction rate. The method for adjusting the transmission rate of the video group call service provided by this embodiment includes the following steps.
step 201, calculating the current downlink satisfaction rate.
Further, in this embodiment, calculating the current downlink satisfaction rate specifically includes:
Firstly, the data volume transferred from the cache in the current statistical period, the data volume reaching the wireless link layer and the data volume remaining in the cache are obtained.
Secondly, calculating the current downlink satisfaction rate according to the data volume transferred from the buffer, the data volume reaching the wireless link layer and the residual data volume in the buffer.
specifically, in this embodiment, the downlink satisfaction rate can be calculated by the following formula (1):
Wherein i is a tableShows the number of statistical periods, OutdataiIndicating the amount of data, Indata, scheduled away from the cache in the ith statistical period of the video group call serviceirepresents the data quantity, Remaindata, of the video group call service reaching the radio link layer (RLC) in the ith statistical periodiAnd (4) representing the residual data volume in the cache when the ith statistical period of the video group call service is ended, wherein T is a calculation period of the downlink satisfaction rate, and GBR is the bandwidth rate guaranteed by the downlink bearer of the video service.
wherein, the value of T can be preset. The GBR is a value that the downlink bearer of the video service guarantees the bandwidth rate and can be obtained. The statistical period may be 1s, or other suitable values, which are not limited in this embodiment.
Therefore, in this embodiment, the data size removed from the buffer in the current statistical period, the data size reaching the radio link layer, the remaining data size in the buffer, and the values of T and GBR are taken into equation (1), and the current downlink satisfaction rate is obtained by calculation using equation (1).
Step 202, filtering the current downlink satisfaction rate.
Further, in this embodiment, an Alpha filtering method may be adopted to perform filtering processing on the current downlink satisfaction rate. Specifically, it can be represented by the formula (2).
Sn＝(1-k)*Sn-1+k*+S (2)
wherein S isnFor the nth filtering result, Sn-1and the number is the (n-1) filtering result, S is the current downlink satisfaction rate, and k is a filtering coefficient.
in this embodiment, after the current downlink satisfaction rate is filtered, the accuracy of the current downlink satisfaction rate can be improved.
And 203, reporting the current downlink satisfaction rate to a server so that the server calculates the current downlink expected packet loss rate according to the current downlink satisfaction rate, and sending the current downlink expected packet loss rate to the talkback user equipment, wherein the talkback user equipment adjusts the current sending rate according to the current downlink expected packet loss rate.
In this embodiment, the implementation manner of step 203 is the same as the implementation manner of step 102 in the first embodiment of the method for adjusting the transmission rate of the video group call service of the present invention, and details are not repeated here.
The method for adjusting the transmission rate of the video group call service provided in this embodiment obtains the amount of data transferred from the buffer, the amount of data reaching the radio link layer, and the remaining amount of data in the buffer in the current statistical period, calculating the current downlink satisfaction rate according to the data amount transferred from the buffer, the data amount reaching the wireless link layer and the residual data amount in the buffer, filtering the current downlink satisfaction rate, reporting the current downlink satisfaction rate to a server, so that the server calculates the current downlink expected packet loss rate according to the current downlink satisfaction rate, and sends the current downlink expected packet loss rate to the talkback user equipment, and the talkback user equipment adjusts the current sending rate according to the current downlink expected packet loss rate, thereby not only improving the timeliness of adjusting the sending rate, and the accuracy of calculating the current downlink satisfaction rate is improved, so that the adjustment of the current sending rate is more accurate.
Fig. 3 is a flowchart of a third embodiment of a method for adjusting a video group call service transmission rate according to the present invention, and as shown in fig. 3, an execution main body of the method for adjusting a video group call service transmission rate provided in this embodiment is a device for adjusting a video group call service transmission rate at a server side, the device for adjusting a video group call service transmission rate at a server side is integrated in the server, and the method for adjusting a video group call service transmission rate provided in this embodiment is applied to the server, and then the method for adjusting a video group call service transmission rate provided in this embodiment includes the following steps.
step 301, receiving the current downlink satisfaction rate reported by each base station.
Specifically, in this embodiment, the message reported by each base station is received, and the current downlink satisfaction rate reported by each base station is obtained after the message is analyzed, where the current downlink satisfaction rate may be a current downlink satisfaction rate that is not subjected to filtering processing, or a current downlink satisfaction rate that is subjected to filtering processing, and this is not limited in this embodiment.
And step 302, calculating the current downlink expected packet loss rate according to the current downlink satisfaction rate.
Specifically, in this embodiment, an average value may be calculated according to the current downlink satisfaction rate reported by each base station, and the current downlink expected packet loss rate may be calculated according to the average value. Or directly calculate the current downlink expected packet loss rate according to the current downlink satisfaction rate, which is not limited in this embodiment.
step 303, sending the current downlink expected packet loss rate to the talkback user equipment, so that the talkback user equipment adjusts the current sending rate according to the current downlink expected packet loss rate.
specifically, in this embodiment, the current downlink expected packet loss rate may be sent to the talkback user equipment through a message, or the current downlink expected packet loss rate is converted into a packet loss rate field in a reception report, and the reception report is sent to the talkback user equipment, which is not limited in this embodiment.
In this embodiment, after the user equipment receives the current downlink expected packet loss rate, whether to adjust the current transmission rate or not may be determined according to the current downlink expected packet loss rate and a preset packet loss rate threshold, and if the current transmission rate needs to be adjusted, the current transmission rate is adjusted to the target transmission rate.
In the method for adjusting the transmission rate of the video group call service provided by this embodiment, the current downlink satisfaction rate reported by each base station is received; calculating the current downlink expected packet loss rate according to the current downlink satisfaction rate; and sending the current downlink expected packet loss rate to the talkback user equipment, so that the talkback user equipment adjusts the current sending rate according to the current downlink expected packet loss rate. When congestion occurs in the downlink transmission bandwidth, the network side equipment can quickly acquire the state and inform the state to the talkback user equipment, so that the talkback user equipment can adjust the current sending rate in real time according to the current downlink expected packet loss rate, the timeliness of adjusting the transmission rate is improved, and the video quality perception before the transmission rate is adjusted is enhanced.
Fig. 4 is a flowchart of a fourth method for adjusting the transmission rate of the video group call service according to the present invention, and as shown in fig. 4, the method for adjusting the transmission rate of the video group call service according to the present embodiment is further detailed in steps 302 to 303 on the basis of the third method for adjusting the transmission rate of the video group call service according to the present invention, and then the method for adjusting the transmission rate of the video group call service according to the present embodiment includes the following steps.
Step 401, receiving the current downlink satisfaction rate reported by each base station.
Further, in this embodiment, the current downlink satisfaction rate is the current downlink satisfaction rate after filtering, where the current downlink satisfaction rate reported by the jth base station may be denoted as Sn(j)。
And 402, calculating the current downlink average satisfaction rate of the whole network according to the current downlink satisfaction rate, and calculating the current downlink expected packet loss rate according to the current downlink average satisfaction rate of the whole network.
further, in this embodiment, according to the current downlink satisfaction rate S reported by each base stationn(j) Calculating average averS of current downlink satisfaction rates reported by all base stationsnAnd the average value is the current downlink average satisfaction rate of the whole network. And calculating the current downlink expected packet loss rate Fl according to the current overall network downlink average satisfaction rate through the formula (3)n。
Fln＝(1-averSn)*100 (3)
Step 403, converting the current downlink expected packet loss rate into a packet loss rate field in the reception report, and sending the reception report to the user equipment for main speech.
further, in this embodiment, the current downlink expected packet loss rate Fl is usednAnd after receiving the receiving report, the main user equipment acquires the current downlink expected packet loss rate from the packet loss rate field.
in the method for adjusting the transmission rate of the video group call service provided in this embodiment, the current downlink satisfaction rate reported by each base station is received, the current overall network downlink average satisfaction rate is calculated according to the current downlink satisfaction rate, the current downlink expected packet loss rate is calculated according to the current overall network downlink average satisfaction rate, the current downlink expected packet loss rate is converted into a packet loss rate field in a reception report, and the reception report is sent to the talkback user equipment.
Fig. 5 is a flowchart of a fifth embodiment of the method for adjusting the video group call service transmission rate of the present invention, and as shown in fig. 5, an execution main body of the method for adjusting the video group call service transmission rate provided in this embodiment is an adjustment device of the video group call service transmission rate at a main speaking user equipment side, where the adjustment device of the video group call service transmission rate at the main speaking user equipment side may be integrated in the main speaking user equipment. The method for adjusting the transmission rate of the video group call service provided by this embodiment includes the following steps.
step 501, receiving a current downlink expected packet loss rate sent by a server.
specifically, in this embodiment, the current downlink expected packet loss rate sent by the server is received, and the current downlink expected packet loss rate may be carried in the received message or received by using a packet loss rate field of the reception report, which is not limited in this embodiment.
step 502, judging whether to adjust the current sending rate according to the current downlink expected packet loss rate and a preset packet loss rate threshold, if so, executing step 503, otherwise, ending.
in this embodiment, the preset packet loss rate threshold may be one or two.
Specifically, in this embodiment, if the preset packet loss rate threshold is one, judging whether the current transmission rate needs to be adjusted according to the current downlink expected packet loss rate and the preset packet loss rate threshold specifically includes: if the current downlink expected packet loss rate is greater than the preset packet loss rate threshold, the current sending rate is adjusted downwards, if the current downlink expected packet loss rate is equal to the preset packet loss rate threshold, the current sending rate is not adjusted, and if the current downlink expected packet loss rate is less than the preset packet loss rate threshold, the current sending rate is adjusted upwards.
if the number of the preset packet loss rate thresholds is two, the preset packet loss rate thresholds are respectively a first preset packet loss rate threshold and a second preset packet loss rate threshold, and the first preset packet loss rate threshold is larger than the second preset packet loss rate threshold. The specific step of judging whether the current transmission rate needs to be adjusted according to the current downlink expected packet loss rate and the preset packet loss rate threshold may be: and if the current downlink expected packet loss rate is greater than or equal to the first preset packet loss rate threshold, adjusting the current sending rate downwards. And if the current downlink expected packet loss rate is smaller than the first preset packet loss rate threshold and larger than the second preset packet loss rate threshold, not adjusting the current sending rate. And if the current downlink expected packet loss rate is less than or equal to a second preset packet loss rate threshold, the current sending rate is adjusted up.
step 503, adjusting the current sending rate to the target sending rate.
Wherein, the sending rate may include: resolution and code rate.
Specifically, in this embodiment, if it is determined to adjust the current sending rate, the resolution in the current sending rate may be adjusted to the target resolution and the code rate in the current sending rate may be adjusted to the target code rate. Or only the code rate in the current sending rate is adjusted to the target code rate, and the resolution in the current sending rate is not adjusted.
In the method for adjusting the transmission rate of the video group call service provided by this embodiment, the current downlink expected packet loss rate sent by the server is received; judging whether to adjust the current sending rate according to the current downlink expected packet loss rate and a preset packet loss rate threshold; and if the current sending rate is determined to be adjusted, adjusting the current sending rate to the target sending rate. When congestion occurs in the downlink transmission bandwidth, the network side equipment can quickly acquire the state and inform the state to the talkback user equipment, so that the talkback user equipment can adjust the current sending rate in real time according to the current downlink expected packet loss rate, the timeliness of adjusting the transmission rate is improved, and the video quality perception before the transmission rate is adjusted is enhanced.
fig. 6 is a flowchart of a sixth embodiment of the method for adjusting the transmission rate of the video group call service of the present invention, and as shown in fig. 6, the method for adjusting the transmission rate of the video group call service provided in this embodiment is based on the fifth embodiment of the method for adjusting the transmission rate of the video group call service of the present invention, further refines step 502, and further includes a step of determining a target code rate and a target resolution after down-regulation, and a step of determining a target code rate and a target resolution after up-regulation. The method for adjusting the transmission rate of the video group call service provided by this embodiment includes the following steps.
step 601, receiving a current downlink expected packet loss rate sent by a server.
In this embodiment, the implementation manner of step 601 is the same as the implementation manner of step 501 in the fifth embodiment of the method for adjusting the transmission rate of the video group call service of the present invention, and details are not repeated here.
Step 602, determining whether the current expected downlink packet loss rate is greater than or equal to a first preset packet loss rate threshold, if so, performing step 603, otherwise, performing step 604.
step 603, determining to adjust the current sending rate downward.
Step 604, determining whether the current expected downlink packet loss rate is less than or equal to a second preset packet loss rate threshold, if so, performing step 605, otherwise, performing step 606.
Step 605, determine to adjust up the current sending rate.
Step 606, determine not to adjust the current sending rate.
in this embodiment, the current sending rate includes: current resolution and current code rate.
In step 606, if it is determined that the current downlink expected packet loss rate is neither greater than or equal to the first preset packet loss rate threshold nor less than or equal to the second preset packet loss rate threshold, it indicates that the current downlink expected packet loss rate is less than the first preset packet loss rate threshold and greater than the second preset packet loss rate threshold, and it is determined that the current transmission rate is not adjusted.
the description is made in connection with step 602-step 606. Further, in this embodiment, a first preset packet loss rate threshold and a second preset packet loss rate threshold are set. The first preset packet loss rate threshold is greater than the second preset packet loss rate threshold. And comparing the current downlink expected packet loss rate with a first preset packet loss rate threshold value and a second preset packet loss rate threshold value respectively. If the current downlink expected packet loss rate is greater than or equal to the first preset packet loss rate threshold, it is indicated that the downlink transmission packet loss is serious, and the downlink transmission bandwidth is seriously congested, and the current transmission rate needs to be reduced, so that the video pictures sent by the user equipment for calling are reduced, and the congestion phenomenon of the downlink transmission bandwidth is relieved. If the current downlink expected packet loss rate is less than or equal to the second preset packet loss rate threshold, it is indicated that the current downlink transmission packet loss is little, the downlink transmission bandwidth is smooth, the current transmission rate can be adjusted up, and the video picture transmitted by the user equipment for calling the speaker is accelerated. If the current downlink expected packet loss rate is smaller than the first preset packet loss rate threshold and larger than the second preset packet loss rate threshold, it indicates that the current downlink transmission packet loss is in the normal range, and the current transmission rate is not adjusted.
it is understood that, in this embodiment, after the step 603 is executed, the step 606 is executed. After step 605 is performed, step 609 is performed.
step 606, determine whether the current code rate is the minimum code rate of the current resolution, if not, execute step 607, otherwise execute step 608.
Specifically, in this embodiment, if the current code rate is not the minimum code rate of the current resolution, the current code rate is determined to be adjusted downward, and the first target code rate after being adjusted downward is determined. And if the current code rate is the minimum code rate of the current resolution, determining to lower the current resolution and the current code rate, and determining a first target resolution and a second target code rate after the lower reduction.
step 607, determining the current code rate to be adjusted downward, and determining the first target code rate after being adjusted downward.
further, in this embodiment, determining the first target bitrate after the downward adjustment specifically includes:
Firstly, obtaining the maximum code rate of the current resolution, the minimum code rate of the current resolution, the target code rate of the last adjustment, a code rate down-regulation step factor, a minimum down-regulation step factor and a packet loss rate down-regulation margin factor.
and secondly, calculating a first target code rate after down-regulation according to the maximum code rate of the current resolution, the minimum code rate of the current resolution, the target code rate of the last adjustment, a code rate down-regulation step factor, a minimum down-regulation step factor and a packet loss rate down-regulation margin factor.
specifically, in this embodiment, the first target code rate after determining the down-regulation may be represented by equation (4).
Wherein the content of the first and second substances,
DnStepmin＝α*(RMax_current-RMin_current)/kUp′ (5)
in the formulae (4) and (5), RExp_n′Is a first target code rate, RAdj_Lasttarget code rate for last adjustment, RMax_currentMaximum code rate, R, for current resolutionMin_currentminimum code rate, k, for the current resolutionUp′And (3) adjusting a code rate down step factor, wherein alpha is a minimum down step factor, a packet loss rate down margin factor, beta is a packet loss rate down margin factor, and Fl is a current downlink expected packet loss rate.
Wherein the content of the first and second substances,initializing the maximum code rate of the initially configured video resolution, and updating the maximum code rate to the adjusted target code rate after each code rate adjustment. RMax_current，RMin_current，kUpand alpha and beta can be configured with values.
Step 608, determining the current resolution and current code rate to be adjusted downward, and determining the first target resolution and the second target code rate after being adjusted downward.
Further, determining the first target resolution and the second target code rate after the down-regulation specifically includes:
Firstly, the size relation between the current code rate and the current resolution and the minimum code rate in the lower N-level resolution is judged.
and secondly, if the current code rate is smaller than the minimum code rate of the current resolution and larger than the minimum code rate in the next-level resolution, determining the first target resolution to be adjusted downwards as the next-level resolution.
And thirdly, if the current code rate is less than or equal to the minimum code rate in the lower N-level resolution and greater than the minimum code rate in the lower N + 1-level resolution, determining the first target resolution to be adjusted downwards as the lower N-level resolution, wherein N is an integer greater than 1.
specifically, in this embodiment, when determining the first target resolution after the down-adjustment, first, a size relationship between the current code rate and a minimum code rate in the current resolution and a minimum code rate in the next-level resolution is determined, and if the current code rate is smaller than the minimum code rate in the current resolution and larger than the minimum code rate in the next-level resolution, the first target resolution after the down-adjustment is determined to be the next-level resolution. And if the current code rate is less than or equal to the minimum code rate in the lower level 2 resolution and greater than the minimum code rate in the lower level 3 resolution, determining the first target resolution to be adjusted downwards to be the lower level 2 resolution. And so on. And if the current code rate is less than or equal to the minimum code rate in the lower N-level resolution and greater than the minimum code rate in the lower N + 1-level resolution, determining the first target resolution to be adjusted downwards as the lower N-level resolution.
and finally, determining a second target code rate according to the first target code rate and the minimum code rate in the target resolution.
specifically, in this embodiment, the second target bitrate determined according to the first target bitrate and the minimum bitrate in the target resolution can be specifically determined by equation (6).
Wherein R isExp_n″Is a second target code rate, RExp_n′Is a first target code rate, RMin_target′Is the minimum code rate in the first target resolution.
Step 609, if the current resolution is the maximum resolution and the current code rate is smaller than the maximum code rate of the maximum resolution, determining to adjust the current code rate upwards, and determining a third target code rate after the adjustment.
Further, in this embodiment, the determining the third target bitrate after the upward adjustment specifically includes:
Firstly, acquiring the maximum code rate of the current resolution, the minimum code rate of the current resolution, the target code rate of the last adjustment and a code rate up-regulation step factor;
And secondly, according to the maximum code rate of the current resolution and the minimum code rate of the current resolution, the target code rate of the last adjustment and the code rate up-regulation step factor, calculating the third target code rate after the last adjustment.
Specifically, in this embodiment, the third target code rate after the upward adjustment is determined may be represented by equation (7).
RExp_n″′＝RAdj_Last+(RMax_current-RMin_current)/kUp″ (7)
Wherein R isExp_n″′Is a third target code rate, RAdj_LastTarget code rate for last adjustment, RMax_currentMaximum code rate, R, for current resolutionMin_currentMinimum code rate, k, for the current resolutionUp″The step size factor is adjusted up for the code rate.
Wherein R isAdj_Lastinitializing the maximum code rate of the initially configured video resolution, and updating the maximum code rate to the adjusted target code rate after each code rate adjustment. RMax_current，RMin_current，kUp″a value may be configured.
Step 610, if the current resolution is not the maximum resolution, determining to adjust the current resolution and the current code rate, and determining a second target resolution and a fourth target code rate after the adjustment.
further, determining the second target resolution and the fourth target code rate after the up-regulation specifically includes:
Firstly, the size relation between the current code rate and the minimum code rate in the upper M-level resolution is judged.
Secondly, if the current code rate is greater than the minimum code rate in the upper M-level resolution and less than the minimum code rate in the upper M + 1-level resolution, determining that the second target resolution of the up-regulation is the upper M-level resolution, wherein M is an integer greater than 0.
and thirdly, if the current code rate is greater than the minimum code rate in the maximum resolution, determining the second target resolution of the up-regulation as the maximum resolution.
Specifically, in this embodiment, when the second target resolution after the up-scaling is determined, the current bitrate is compared with the minimum bitrate in the upper-level resolution and the minimum bitrate in the upper-level resolution. And if the current code rate is greater than or equal to the minimum code rate in the upper secondary resolution and less than or equal to the minimum code rate in the upper tertiary resolution, determining the second target resolution to be adjusted up as the upper secondary resolution. And so on. And if the current code rate is greater than or equal to the minimum code rate in the second maximum resolution and less than or equal to the minimum code rate in the maximum resolution, determining the second target resolution of the up-regulation as the second maximum resolution, and if the current code rate is greater than the minimum code rate in the maximum resolution, determining the second target resolution of the up-regulation as the maximum resolution.
And finally, determining a fourth target code rate according to the maximum code rate in the second target resolution, the minimum code rate in the second target resolution and the third target code rate.
Specifically, in this embodiment, determining the fourth target code rate may be represented by equation (8).
Wherein R isWxp_n″″In order to obtain the fourth target code rate,Is the maximum code rate, R, in the second target resolutionMin_target″is the minimum code rate, R, in the second target resolutionExp_n″′Is the third target code rate.
Step 611, adjust the current sending rate to the target sending rate.
Further, adjusting the current sending rate to the target sending rate specifically includes:
And if the current code rate in the current sending rate is determined to be adjusted downwards or upwards, the current code rate is adjusted downwards to be the first target code rate or is adjusted upwards to be the third target code rate.
And if the current resolution and the current code rate in the current sending rate are determined to be adjusted downwards or upwards, the current resolution is adjusted downwards to the first target resolution, the current code rate is adjusted downwards to the second target code rate, or the current resolution is adjusted upwards to the second target resolution, and the current code rate is adjusted upwards to the fourth target code rate.
the method for adjusting the transmission rate of the video group call service provided by this embodiment judges, by receiving a current downlink expected packet loss rate sent by a server, whether the current downlink expected packet loss rate is greater than or equal to a first preset packet loss rate threshold, if so, determines to down-regulate the current transmission rate, otherwise, judges whether the current downlink expected packet loss rate is less than or equal to a second preset packet loss rate threshold, if so, determines to up-regulate the current transmission rate, otherwise, determines not to adjust the current transmission rate. When the current sending rate is determined to be adjusted downwards, whether the current code rate is the minimum code rate of the current resolution is judged, if not, the current code rate is determined to be adjusted downwards, the first target code rate after the adjustment downwards is determined, if yes, the current resolution and the current code rate are determined to be adjusted downwards, and the first target resolution and the second target code rate after the adjustment downwards are determined. When the current sending rate is determined to be adjusted upwards, if the current resolution is the maximum resolution and the current code rate is smaller than the maximum code rate of the maximum resolution, the current code rate is determined to be adjusted upwards, a third target code rate after the current resolution is adjusted upwards is determined, and if the current resolution is not the maximum resolution, the current resolution and the current code rate are determined to be adjusted upwards, and a second target resolution and a fourth target code rate after the current resolution is adjusted upwards are determined. And if the current code rate in the current sending rate is determined to be adjusted downwards or upwards, the current code rate is adjusted downwards to be the first target code rate or is adjusted upwards to be the third target code rate. And if the current resolution and the current code rate in the current sending rate are determined to be adjusted downwards or upwards, the current resolution is adjusted downwards to the first target resolution, the current code rate is adjusted downwards to the second target code rate, or the current resolution is adjusted upwards to the second target resolution, and the current code rate is adjusted upwards to the fourth target code rate. When the current sending rate is adjusted up or down, the current sending rate can be adjusted more accurately by a specific adjustment scheme of only adjusting up or down the current code rate and simultaneously adjusting up or down the current resolution and the current code rate.
those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The foregoing program may be stored in a readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Fig. 7 is a schematic structural diagram of a first embodiment of an apparatus for adjusting a transmission rate of a video group call service at a base station side in the present invention, and as shown in fig. 7, the apparatus for adjusting a transmission rate of a video group call service at a base station side in this embodiment includes: a calculating module 71 and a reporting module 72.
the calculating module 71 is configured to calculate a current downlink satisfaction rate. A reporting module 72, configured to report the current downlink satisfaction rate to the server, so that the server calculates a current downlink expected packet loss rate according to the current downlink satisfaction rate, and sends the current downlink expected packet loss rate to the mainly speaking user equipment, and the mainly speaking user equipment adjusts a current sending rate according to the current downlink expected packet loss rate.
The apparatus for adjusting the transmission rate of the video group call service at the base station side provided in this embodiment may implement the technical solution of the method embodiment shown in fig. 1, and the implementation principle and the technical effect are similar, which are not described herein again.
Fig. 8 is a schematic structural diagram of a second embodiment of an apparatus for adjusting a transmission rate of a video group call service at a base station side in the present invention, and as shown in fig. 8, the apparatus for adjusting a transmission rate of a video group call service at a base station side provided in this embodiment is based on the first embodiment of the apparatus for adjusting a transmission rate of a video group call service at a base station side in the present invention, and further includes: a filtering module 81.
further, the calculating module 71 is specifically configured to: acquiring the data volume transferred from the cache in the current statistical period, the data volume reaching a wireless link layer and the residual data volume in the cache; and calculating the current downlink satisfaction rate according to the data volume transferred from the buffer, the data volume reaching the wireless link layer and the residual data volume in the buffer.
further, the filtering module 81 is configured to perform filtering processing on the current downlink satisfaction rate.
The apparatus for adjusting the transmission rate of the video group call service at the base station side provided in this embodiment may implement the technical solution of the method embodiment shown in fig. 2, and the implementation principle and the technical effect are similar, which are not described herein again.
fig. 9 is a schematic structural diagram of a first embodiment of an apparatus for adjusting a transmission rate of a video group call service at a server side in the present invention, and as shown in fig. 9, the apparatus for adjusting a transmission rate of a video group call service at a server side in the present embodiment includes: a receiving module 91, a calculating module 92 and a sending module 93.
the receiving module 91 is configured to receive the current downlink satisfaction rate reported by each base station. And the calculating module 92 is configured to calculate a current downlink expected packet loss rate according to the current downlink satisfaction rate. A sending module 93, configured to send the current downlink expected packet loss rate to the user equipment for calling, so that the user equipment for calling adjusts the current sending rate according to the current downlink expected packet loss rate.
The apparatus for adjusting the transmission rate of the video group call service on the server side provided in this embodiment may implement the technical solution of the method embodiment shown in fig. 3, and the implementation principle and the technical effect are similar, which are not described herein again.
Further, in this embodiment, the calculating module 92 is specifically configured to: calculating the current downlink average satisfaction rate of the whole network according to the current downlink satisfaction rate; and calculating the current downlink expected packet loss rate according to the current downlink average satisfaction rate of the whole network.
Further, in this embodiment, the sending module 93 is specifically configured to: converting the current downlink expected packet loss rate into a packet loss rate field in a receiving report; and sending the receiving report to the main speaking user equipment.
Further, the apparatus for adjusting the transmission rate of the video group call service at the server side provided in this embodiment may implement the technical solution of the method embodiment shown in fig. 4, and the implementation principle and the technical effect are similar, which are not described herein again.
fig. 10 is a schematic structural diagram of a first embodiment of an apparatus for adjusting a video group call service transmission rate at a main user equipment side in the present invention, and as shown in fig. 10, the apparatus for adjusting a video group call service transmission rate at a main user equipment side in the present embodiment includes: the device comprises a receiving module 101, a judging module 102 and an adjusting module 103.
the receiving module 101 is configured to receive a current downlink expected packet loss rate sent by a server. The determining module 102 is configured to determine whether to adjust the current sending rate according to the current downlink expected packet loss rate and a preset packet loss rate threshold. An adjusting module 103, configured to adjust the current sending rate to a target sending rate if it is determined that the current sending rate is adjusted.
The apparatus for adjusting the transmission rate of the video group call service at the user equipment side for calling may implement the technical solution of the method embodiment shown in fig. 5, and the implementation principle and the technical effect are similar, which are not described herein again.
fig. 11 is a schematic structural diagram of a second embodiment of an apparatus for adjusting a video group call service transmission rate at a master user equipment side in the present invention, and as shown in fig. 11, the apparatus for adjusting a video group call service transmission rate at a master user equipment side in the present embodiment further includes, on the basis of the first embodiment of the apparatus for adjusting a video group call service transmission rate at a master user equipment side in the present invention: a first determination module 111, a second determination module 112, a third determination module 113, and a fourth determination module 114.
Further, the determining module 102 is specifically configured to: if the current downlink expected packet loss rate is greater than or equal to a first preset packet loss rate threshold, determining to reduce the current sending rate; if the current downlink expected packet loss rate is less than or equal to a second preset packet loss rate threshold, determining to adjust the current sending rate; if the current downlink expected packet loss rate is smaller than a first preset packet loss rate threshold and larger than a second preset packet loss rate threshold, determining not to adjust the current transmission rate;
Wherein the current transmission rate comprises: current resolution and current code rate.
Further, the determining module 102 is further configured to determine whether the current code rate is the minimum code rate of the current resolution. The first determining module 111 is configured to determine to lower the current code rate if the current code rate is not the minimum code rate of the current resolution, and determine a first target code rate after the lower reduction. The second determining module 111 is configured to determine to lower the current resolution and the current code rate if the current code rate is the minimum code rate of the current resolution, and determine a first target resolution and a second target code rate after the lower reduction.
Further, the first determining module 111 is specifically configured to: acquiring the maximum code rate of the current resolution, the minimum code rate of the current resolution, the target code rate of the last adjustment, a code rate down-regulation step factor, a minimum down-regulation step factor and a packet loss rate down-regulation margin factor; and calculating a first target code rate after down-regulation according to the maximum code rate of the current resolution, the minimum code rate of the current resolution, the target code rate of the last adjustment, a code rate down-regulation step factor, a minimum down-regulation step factor and a packet loss rate down-regulation margin factor.
further, the second determining module 112 is specifically configured to: judging the size relationship between the current code rate and the current resolution and the minimum code rate in the lower N-level resolution; if the current code rate is smaller than the minimum code rate of the current resolution and larger than the minimum code rate in the next-level resolution, determining the first target resolution to be adjusted downwards as the next-level resolution; if the current code rate is less than or equal to the minimum code rate in the lower N-level resolution and greater than the minimum code rate in the lower N + 1-level resolution, determining that the first target resolution to be adjusted downwards is the lower N-level resolution, wherein N is an integer greater than 1; and determining a second target code rate according to the first target code rate and the minimum code rate in the target resolution.
Further, the third determining module 113 is configured to determine to adjust the current code rate upward and determine a third target code rate after the adjustment, if the current resolution is the maximum resolution and the current code rate is smaller than the maximum code rate of the maximum resolution. A fourth determining module 114, configured to determine to adjust the current resolution and the current bitrate upward if the current resolution is not the maximum resolution, and determine a second target resolution and a fourth target bitrate after the adjustment.
Further, the third determining module 113 is specifically configured to: acquiring the maximum code rate of the current resolution, the minimum code rate of the current resolution, the target code rate of the last adjustment and the code rate up-regulation step length factor; and calculating a third target code rate after the third target code rate is adjusted according to the maximum code rate of the current resolution, the minimum code rate of the current resolution, the target code rate adjusted last time and the code rate up-regulation step length factor.
further, the fourth determining module 114 is specifically configured to: judging the size relationship between the current code rate and the minimum code rate in the upper M-level resolution; if the current code rate is greater than the minimum code rate in the upper M-level resolution and less than the minimum code rate in the upper M + 1-level resolution, determining that the second target resolution which is adjusted upwards is the upper M-level resolution, wherein M is an integer greater than 0; if the current code rate is larger than the minimum code rate in the maximum resolution, determining the second target resolution of the up-regulation as the maximum resolution; and determining a fourth target code rate according to the maximum code rate in the second target resolution, the minimum code rate in the second target resolution and the third target code rate.
further, the adjusting module 103 is specifically configured to: if determining to down-regulate or up-regulate the current code rate in the current sending rate, then down-regulating the current code rate to a first target code rate or up-regulating the current code rate to a third target code rate; and if the current resolution and the current code rate in the current sending rate are determined to be adjusted downwards or upwards, the current resolution is adjusted downwards to the first target resolution, the current code rate is adjusted downwards to the second target code rate, or the current resolution is adjusted upwards to the second target resolution, and the current code rate is adjusted upwards to the fourth target code rate.
the apparatus for adjusting the transmission rate of the video group call service at the user equipment side for calling may implement the technical solution of the method embodiment shown in fig. 6, and the implementation principle and the technical effect are similar, which are not described herein again.
fig. 12 is a schematic structural diagram of a network device according to a first embodiment of the present invention, and as shown in fig. 12, the network device provided in this embodiment includes: memory 121, processor 122, and computer programs.
The computer program is stored in the memory 121 and configured to be executed by the processor 122 to implement the method for adjusting the transmission rate of the video group call service according to the first embodiment of the present invention or the method for adjusting the transmission rate of the video group call service according to the second embodiment of the present invention.
The relevant description may be understood by referring to the relevant description and effect corresponding to the steps in fig. 1 to fig. 2, and redundant description is not repeated here.
in the present embodiment, the memory 121 and the processor 122 are connected by a bus 123.
Fig. 13 is a schematic structural diagram of a network device according to a first embodiment of the present invention, and as shown in fig. 13, the network device according to this embodiment includes: memory 131, processor 132, and computer programs.
Wherein, the computer program is stored in the memory 131 and configured to be executed by the processor 132 to implement the method in the third embodiment of the adjusting method of the transmission rate of the video group call service or the fourth embodiment of the adjusting method of the transmission rate of the video group call service.
The relevant description may be understood by referring to the relevant description and effect corresponding to the steps in fig. 3 to fig. 4, and redundant description is not repeated here.
In the present embodiment, the memory 131 and the processor 132 are connected by a bus 133.
fig. 14 is a schematic structural diagram of a network device according to a first embodiment of the present invention, and as shown in fig. 14, the network device provided in this embodiment includes: memory 141, processor 142 and computer programs.
wherein, the computer program is stored in the memory 141 and configured to be executed by the processor 142 to implement the method of the fifth embodiment of the adjusting method of the transmission rate of the video group call service of the present invention or the method of the sixth embodiment of the adjusting method of the transmission rate of the video group call service of the present invention.
The related description may be understood by referring to the related description and effect corresponding to the steps in fig. 5 to fig. 6, and redundant description is not repeated here.
In this embodiment, the memory 141 and the processor 142 are connected by a bus 143.
The embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the method for adjusting a transmission rate of a video group call service according to the embodiment of the present invention or the method for adjusting a transmission rate of a video group call service according to the embodiment of the present invention.
the embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the method for adjusting a transmission rate of a video group call service according to the third embodiment of the present invention or the method for adjusting a transmission rate of a video group call service according to the fourth embodiment of the present invention.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the fifth embodiment of the method for adjusting a transmission rate of a video group call service according to the present invention or the sixth embodiment of the method for adjusting a transmission rate of a video group call service according to the present invention.
finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (36)

1. a method for adjusting transmission rate of video group call service is applied to a base station, and comprises the following steps:
Calculating the current downlink satisfaction rate;
Reporting the current downlink satisfaction rate to a server so that the server calculates the current downlink expected packet loss rate according to the current downlink satisfaction rate, and sending the current downlink expected packet loss rate to a main user device, wherein the main user device adjusts the current sending rate according to the current downlink expected packet loss rate.
2. the method according to claim 1, wherein the calculating the current downlink satisfaction rate specifically includes:
Acquiring the data volume transferred from the cache in the current statistical period, the data volume reaching a wireless link layer and the residual data volume in the cache;
And calculating the current downlink satisfaction rate according to the data volume transferred from the cache, the data volume reaching the wireless link layer and the residual data volume in the cache.
3. the method of claim 1 or 2, wherein before sending the current downlink satisfaction rate to a server, further comprising:
and carrying out filtering processing on the current downlink satisfaction rate.
4. A method for adjusting transmission rate of video group call service is applied to a server, and comprises the following steps:
Receiving the current downlink satisfaction rate reported by each base station;
Calculating the current downlink expected packet loss rate according to the current downlink satisfaction rate;
And sending the current downlink expected packet loss rate to the talkback user equipment, so that the talkback user equipment adjusts the current sending rate according to the current downlink expected packet loss rate.
5. the method according to claim 4, wherein the calculating a current downlink expected packet loss rate according to the current downlink satisfaction rate specifically includes:
Calculating the current downlink average satisfaction rate of the whole network according to the current downlink satisfaction rate;
And calculating the current downlink expected packet loss rate according to the current overall network downlink average satisfaction rate.
6. The method according to claim 4 or 5, wherein the sending the current downlink expected packet loss rate to a speaker user equipment specifically comprises:
converting the current downlink expected packet loss rate into a packet loss rate field in a receiving report;
And sending the receiving report to a main speaking user device.
7. a method for adjusting transmission rate of video group call service is characterized in that, the method is applied to a main speaking user device, and comprises the following steps:
Receiving the current downlink expected packet loss rate sent by a server;
judging whether to adjust the current sending rate according to the current downlink expected packet loss rate and a preset packet loss rate threshold;
and if the current sending rate is determined to be adjusted, adjusting the current sending rate to a target sending rate.
8. The method according to claim 7, wherein the determining whether to adjust the current sending rate according to the current downlink expected packet loss rate and a preset packet loss rate threshold specifically includes:
if the current downlink expected packet loss rate is greater than or equal to a first preset packet loss rate threshold, determining to reduce the current sending rate;
If the current downlink expected packet loss rate is less than or equal to a second preset packet loss rate threshold, determining to adjust the current sending rate;
If the current downlink expected packet loss rate is smaller than a first preset packet loss rate threshold and larger than a second preset packet loss rate threshold, determining not to adjust the current transmission rate;
wherein the current transmission rate comprises: current resolution and current code rate.
9. the method of claim 8, wherein after determining to adjust the current transmission rate downward, further comprising:
Judging whether the current code rate is the minimum code rate of the current resolution;
if the current code rate is not the minimum code rate of the current resolution, determining to lower the current code rate, and determining a first target code rate after the lower reduction;
and if the current code rate is the minimum code rate of the current resolution, determining to reduce the current resolution and the current code rate, and determining a first target resolution and a second target code rate after reducing.
10. the method according to claim 9, wherein the determining the first target bitrate after the downward adjustment specifically includes:
Acquiring the maximum code rate of the current resolution, the minimum code rate of the current resolution, the target code rate of the last adjustment, a code rate down-regulation step factor, a minimum down-regulation step factor and a packet loss rate down-regulation margin factor;
And calculating the first target code rate after the down-regulation according to the maximum code rate of the current resolution, the minimum code rate of the current resolution, the target code rate of the last adjustment, the code rate down-regulation step factor, the minimum down-regulation step factor and the packet loss rate down-regulation margin factor.
11. the method of claim 9, wherein the determining the first target resolution and the second target bitrate after the down-regulation specifically comprises:
judging the size relation between the current code rate and the minimum code rate in the current resolution and the lower N-level resolution;
if the current code rate is smaller than the minimum code rate of the current resolution and larger than the minimum code rate in the next-level resolution, determining the first target resolution to be adjusted downwards as the next-level resolution;
If the current code rate is less than or equal to the minimum code rate in the lower N-level resolution and greater than the minimum code rate in the lower N + 1-level resolution, determining that the first target resolution to be adjusted downwards is the lower N-level resolution, wherein N is an integer greater than 1;
and determining a second target code rate according to the first target code rate and the minimum code rate in the target resolution.
12. The method of claim 8, wherein after determining to adjust the current transmission rate upward, further comprising:
If the current resolution is the maximum resolution and the current code rate is smaller than the maximum code rate of the maximum resolution, determining to adjust the current code rate upwards, and determining a third target code rate after the adjustment;
and if the current resolution is not the maximum resolution, determining to adjust the current resolution and the current code rate, and determining a second target resolution and a fourth target code rate after the adjustment.
13. The method of claim 12, wherein the determining the third target bitrate after the upward adjustment specifically comprises:
acquiring the maximum code rate of the current resolution, the minimum code rate of the current resolution, the target code rate of the last adjustment and the code rate up-regulation step length factor;
and calculating the third target code rate after the up-regulation according to the maximum code rate of the current resolution, the minimum code rate of the current resolution, the target code rate of the last regulation and the code rate up-regulation step length factor.
14. the method of claim 12, wherein the determining the second target resolution and the fourth target bitrate after the up-scaling specifically comprises:
Judging the size relationship between the current code rate and the minimum code rate in the upper M-level resolution;
If the current code rate is greater than the minimum code rate in the upper M-level resolution and less than the minimum code rate in the upper M + 1-level resolution, determining that the second target resolution which is adjusted upwards is the upper M-level resolution, wherein M is an integer greater than 0;
if the current code rate is larger than the minimum code rate in the maximum resolution, determining the second target resolution of the up-regulation as the maximum resolution;
and determining a fourth target code rate according to the maximum code rate in the second target resolution, the minimum code rate in the second target resolution and the third target code rate.
15. The method according to claim 11 or 14, wherein the adjusting the current sending rate to a target sending rate if it is determined to adjust the current sending rate specifically comprises:
If determining to down-regulate or up-regulate the current code rate in the current sending rate, then down-regulating the current code rate to a first target code rate or up-regulating the current code rate to a third target code rate;
and if the current resolution and the current code rate in the current sending rate are determined to be adjusted downwards or upwards, the current resolution is adjusted downwards to the first target resolution, the current code rate is adjusted downwards to the second target code rate, or the current resolution is adjusted upwards to the second target resolution, and the current code rate is adjusted upwards to the fourth target code rate.
16. an apparatus for adjusting transmission rate of video group call service at base station side, comprising:
The calculation module is used for calculating the current downlink satisfaction rate;
And the reporting module is used for reporting the current downlink satisfaction rate to a server so that the server calculates the current downlink expected packet loss rate according to the current downlink satisfaction rate, and sends the current downlink expected packet loss rate to the talkback user equipment, and the talkback user equipment adjusts the current sending rate according to the current downlink expected packet loss rate.
17. The apparatus of claim 16, wherein the computing module is specifically configured to:
acquiring the data volume transferred from the cache in the current statistical period, the data volume reaching a wireless link layer and the residual data volume in the cache; and calculating the current downlink satisfaction rate according to the data volume transferred from the cache, the data volume reaching the wireless link layer and the residual data volume in the cache.
18. The apparatus of claim 16 or 17, further comprising:
And the filtering module is used for filtering the current downlink satisfaction rate.
19. A device for adjusting the transmission rate of a video group call service at a server side is characterized by comprising:
a receiving module, configured to receive a current downlink satisfaction rate reported by each base station;
the calculation module is used for calculating the current downlink expected packet loss rate according to the current downlink satisfaction rate;
And the sending module is used for sending the current downlink expected packet loss rate to the talkback user equipment so that the talkback user equipment can adjust the current sending rate according to the current downlink expected packet loss rate.
20. The apparatus of claim 19, wherein the computing module is specifically configured to:
Calculating the current downlink average satisfaction rate of the whole network according to the current downlink satisfaction rate; and calculating the current downlink expected packet loss rate according to the current overall network downlink average satisfaction rate.
21. The apparatus according to claim 19 or 20, wherein the sending module is specifically configured to:
converting the current downlink expected packet loss rate into a packet loss rate field in a receiving report; and sending the receiving report to a main speaking user device.
22. A device for adjusting the transmission rate of a video group call service at a user equipment side for calling, comprising:
the receiving module is used for receiving the current downlink expected packet loss rate sent by the server;
the judging module is used for judging whether to adjust the current sending rate according to the current downlink expected packet loss rate and a preset packet loss rate threshold;
and the adjusting module is used for adjusting the current sending rate to a target sending rate if the current sending rate is determined to be adjusted.
23. The apparatus of claim 22, wherein the determining module is specifically configured to:
If the current downlink expected packet loss rate is greater than or equal to a first preset packet loss rate threshold, determining to reduce the current sending rate; if the current downlink expected packet loss rate is less than or equal to a second preset packet loss rate threshold, determining to adjust the current sending rate; if the current downlink expected packet loss rate is smaller than a first preset packet loss rate threshold and larger than a second preset packet loss rate threshold, determining not to adjust the current transmission rate;
Wherein the current transmission rate comprises: current resolution and current code rate.
24. The apparatus of claim 23, further comprising: a first determination module and a second determination module;
The judging module is further configured to judge whether the current code rate is the minimum code rate of the current resolution;
The first determining module is configured to determine to lower the current code rate and determine a first target code rate after the lower reduction if the current code rate is not the minimum code rate of the current resolution;
and the second determining module is configured to determine to lower the current resolution and the current code rate, and determine a first target resolution and a second target code rate after the lowering if the current code rate is the minimum code rate of the current resolution.
25. The apparatus of claim 24, wherein the first determining module is specifically configured to:
acquiring the maximum code rate of the current resolution, the minimum code rate of the current resolution, the target code rate of the last adjustment, a code rate down-regulation step factor, a minimum down-regulation step factor and a packet loss rate down-regulation margin factor; and calculating the first target code rate after the down-regulation according to the maximum code rate of the current resolution, the minimum code rate of the current resolution, the target code rate of the last adjustment, the code rate down-regulation step factor, the minimum down-regulation step factor and the packet loss rate down-regulation margin factor.
26. The apparatus of claim 24, wherein the second determining module is specifically configured to:
Judging the size relation between the current code rate and the minimum code rate in the current resolution and the lower N-level resolution; if the current code rate is smaller than the minimum code rate of the current resolution and larger than the minimum code rate in the next-level resolution, determining the first target resolution to be adjusted downwards as the next-level resolution; if the current code rate is less than or equal to the minimum code rate in the lower N-level resolution and greater than the minimum code rate in the lower N + 1-level resolution, determining that the first target resolution to be adjusted downwards is the lower N-level resolution, wherein N is an integer greater than 1; and determining a second target code rate according to the first target code rate and the minimum code rate in the target resolution.
27. The apparatus of claim 23, further comprising: a third determination module and a fourth determination module;
The third determining module is configured to determine to adjust the current code rate upward and determine a third target code rate after the adjustment, if the current resolution is the maximum resolution and the current code rate is smaller than the maximum code rate of the maximum resolution;
and the fourth determining module is used for determining to adjust the current resolution and the current code rate upwards and determining the second target resolution and the fourth target code rate after the adjustment if the current resolution is not the maximum resolution.
28. The apparatus of claim 27, wherein the third determining module is specifically configured to:
acquiring the maximum code rate of the current resolution, the minimum code rate of the current resolution, the target code rate of the last adjustment and the code rate up-regulation step length factor; and calculating the third target code rate after the up-regulation according to the maximum code rate of the current resolution, the minimum code rate of the current resolution, the target code rate of the last regulation and the code rate up-regulation step length factor.
29. The apparatus of claim 27, wherein the fourth determining module is specifically configured to:
judging the size relationship between the current code rate and the minimum code rate in the upper M-level resolution; if the current code rate is greater than the minimum code rate in the upper M-level resolution and less than the minimum code rate in the upper M + 1-level resolution, determining that the second target resolution which is adjusted upwards is the upper M-level resolution, wherein M is an integer greater than 0; if the current code rate is larger than the minimum code rate in the maximum resolution, determining the second target resolution of the up-regulation as the maximum resolution; and determining a fourth target code rate according to the maximum code rate in the second target resolution, the minimum code rate in the second target resolution and the third target code rate.
30. the apparatus according to claim 26 or 29, wherein the adjusting module is specifically configured to:
If determining to down-regulate or up-regulate the current code rate in the current sending rate, then down-regulating the current code rate to a first target code rate or up-regulating the current code rate to a third target code rate; and if the current resolution and the current code rate in the current sending rate are determined to be adjusted downwards or upwards, the current resolution is adjusted downwards to the first target resolution, the current code rate is adjusted downwards to the second target code rate, or the current resolution is adjusted upwards to the second target resolution, and the current code rate is adjusted upwards to the fourth target code rate.
31. a network device, comprising:
A memory, a processor, and a computer program;
Wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method of any one of claims 1-3.
32. A network device, comprising:
a memory, a processor, and a computer program;
wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method of any one of claims 4-6.
33. A terminal device, comprising:
a memory, a processor, and a computer program;
wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method of any one of claims 7-15.
34. a computer-readable storage medium, having stored thereon a computer program for execution by a processor to perform the method of any one of claims 1-3.
35. a computer-readable storage medium, having stored thereon a computer program for execution by a processor to perform the method of any one of claims 4-6.
36. A computer-readable storage medium, on which a computer program is stored, which computer program is executable by a processor to implement the method according to any of claims 7-15.
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