WO2016206391A1 - 一种视频会议网络流量控制方法和系统 - Google Patents

一种视频会议网络流量控制方法和系统 Download PDF

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Publication number
WO2016206391A1
WO2016206391A1 PCT/CN2016/074020 CN2016074020W WO2016206391A1 WO 2016206391 A1 WO2016206391 A1 WO 2016206391A1 CN 2016074020 W CN2016074020 W CN 2016074020W WO 2016206391 A1 WO2016206391 A1 WO 2016206391A1
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video conference
network traffic
broadcast source
control
video
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PCT/CN2016/074020
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English (en)
French (fr)
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王志杰
杨伯辉
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中兴通讯股份有限公司
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Publication of WO2016206391A1 publication Critical patent/WO2016206391A1/zh

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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
    • H04N7/15—Conference systems

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  • This document relates to the field of communications, and in particular, to a video conference network flow control method, system, and computer readable storage medium.
  • video conferencing systems have gradually developed and been applied.
  • the use of video conferencing systems based on multiple network transmissions has greatly improved the convenience of people's work and life communication and communication, especially the work efficiency has been greatly improved, the cost of corporate meetings has been reduced, and it has been gradually popularized and widely used in various fields.
  • the method of reducing the frame rate reduces the overall demand for network bandwidth.
  • the cost is to reduce the picture quality in the conference.
  • this kind of control scheme for video conference network traffic at the cost of reducing picture quality is increasingly unable to meet the needs of business development. Therefore, how to control the network traffic and reduce the pressure on network traffic without sacrificing the picture quality for the characteristics of the video conferencing service has become a problem that must be solved.
  • Disclosed herein is a method, system and computer readable storage medium for video conference network flow control, which solves the problem of more rationally and scientifically controlling network traffic and reducing network traffic pressure without sacrificing picture quality.
  • a video conference network flow control method includes:
  • the non-broadcast source terminal and the non-broadcast source selection terminal are notified to stop transmitting the video data; only the video conference data of the broadcast source terminal and the broadcast source selection terminal are encoded and decoded.
  • the multi-screen conference When applied to a multi-screen conference, if the video conference network traffic is controlled, the multi-screen conference is changed to a single-screen conference.
  • the switch can be switched, the original broadcast source is notified that the terminal no longer sends the video data, and the new broadcast source terminal is notified to send the video data; only the video conference data of the new broadcast source terminal and the new broadcast source selection terminal is encoded and decoded.
  • a video conference network flow control system includes:
  • a traffic detection module configured to detect a video conference network traffic status
  • the flow control determination module is configured to determine whether to control the video conference network traffic according to the video conference network traffic status
  • the flow control module includes:
  • the call service sub-module is configured to notify the non-broadcast source terminal and the non-broadcast source selection terminal to stop transmitting the video data when the flow control determination module determines that the video conference network traffic is controlled;
  • the media service sub-module is configured to perform codec processing on the video conference data of the broadcast source terminal and the broadcast source selection terminal when the flow control determination module determines that the video conference network traffic is controlled.
  • the traffic detection module is further configured to continue to detect the video conference network traffic status after controlling the video conference network traffic;
  • the flow control release determination module is configured to determine whether to release the control video conference network traffic according to the video conference network traffic status after controlling the video conference network traffic;
  • the call service sub-module is further configured to notify all terminals to resume normal video conference data transmission when the flow control release determination module determines to release the control;
  • the media service sub-module is further configured to resume encoding and decoding the video conference data of all the terminals when the flow control release determination module determines that the control is released.
  • the hold module is configured to control, when the flow control determination module determines to control the video conference network traffic, control other interactive messages that the conference terminal only retains the audio data and remains active.
  • the switching determination module is configured to receive a broadcast source switching request after controlling the video conference network traffic, and determine whether the handover is possible;
  • the call service sub-module is further configured to notify the original broadcast source selection terminal that the video data is no longer sent when the handover determination module determines that the handover is possible; and notify the new broadcast source terminal to send the video data;
  • the media service sub-module is further configured to perform codec processing only on the video conference data of the new broadcast source terminal and the new broadcast source selection terminal when the handover determination module determines that the handover is possible.
  • the hold module is further configured to control other interactive messages in which the conference terminal only retains audio data and remains active when the handover decision module determines that the handover is possible.
  • a video conference network flow control method provided by an embodiment of the present invention may be implemented when executed by a processor.
  • the solution provided by the embodiment of the present invention determines that when the network traffic is in a bad state, that is, when the network bandwidth pressure is large, the traffic control is performed, and only the necessary conference terminals in the current conference service perform two-way video data interaction, but Other non-essential conference terminals only perform one-way video data interaction, retain a small amount of audio data and maintain an active interactive message, which greatly reduces the data transmission traffic of the video conference network and alleviates the network bandwidth pressure.
  • the solution reduces the data transmission traffic of the video conference network, but does not sacrifice the video picture transmission quality of the necessary conference terminal, and fully satisfies the business requirements of the video conference.
  • the video conference network traffic control is released, and the normal service state is restored.
  • FIG. 1 is a structural diagram of a video conference network flow control system disclosed herein;
  • FIG. 2 is a flowchart of a video conference network flow control method disclosed herein;
  • FIG. 3 is a flow chart of the video conference network traffic release control disclosed herein;
  • FIG. 4 is a schematic diagram of a data flow of a video conference system before implementing the video conference network traffic control method disclosed herein;
  • FIG. 5 is a schematic diagram of a data flow of a video conference system after implementing the video conference network traffic control method disclosed herein;
  • FIG. 6 is a flowchart of a video conference broadcast source switching method disclosed herein;
  • FIG. 7 is a schematic diagram of screen switching seen by all non-broadcast sources and broadcast sources present after the flow control is performed in a multi-screen conference according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of screen switching seen by various terminals before and after a broadcast source switching according to an embodiment of the present invention.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the steps of the video conference network flow control method are as follows:
  • Step 201 Detect a video conference network traffic status.
  • Step 202 Determine, according to the video conference network traffic status, whether to control the video conference network traffic; if control, proceed to step 203 and step 204;
  • Step 203 Notifying the non-broadcast source terminal and the non-broadcast source selection terminal to stop sending the video data.
  • Step 204 Perform codec processing on the video conference data of the broadcast source terminal and the broadcast source selection terminal.
  • step 203 and step 204 are not limited to a sequence.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • Step 301 Detect a video conference network traffic status.
  • Step 302 Determine, according to the video conference network traffic status, whether to release the video conference network traffic; if the control is released, perform steps 303 and 304;
  • Step 303 Notifying all terminals to resume normal video conference data transmission
  • Step 304 Resume encoding and decoding processing of video conference data of all terminals
  • step 303 and step 304 is not limited to a sequence.
  • the video conference network traffic status is determined according to the video conference network data receiving and/or sending status
  • Examples of network data reception and/or transmission status are as follows:
  • Determining the video conference network traffic status according to the above video conference network data reception and/or transmission status may be:
  • Video conference network traffic status bandwidth occupancy rate * 100;
  • the video conference network traffic conditions under the above five conditions are: status 1-60, status 2-30, status 3-30, status 4-70, status 5-20.
  • determining the video conference network traffic status according to the comprehensive calculation of the partial factors of the video conference network data receiving and/or transmitting status may be:
  • Video conference network traffic status (bandwidth occupancy * 100 + network delay / 50 * 100) / 2;
  • the video conference network traffic conditions under the above five conditions are: status 1-50, status 2-25, status 3-20, status 4-45, status 5-15.
  • determining the video conference network traffic status according to the comprehensive calculation of all factors of the video conference network data receiving and/or transmitting status may be:
  • Video conference network traffic status bandwidth occupancy rate * 100 + network delay + packet loss rate * 100;
  • the video conference network traffic conditions under the above five conditions are: status 1-85, status 2-50, status 3-40, status 4-88, status 5-40;
  • the specific calculation manner is not limited to the example of the embodiment, and may include one or more other network traffic status assessment parameters, and the weights of each parameter and the specific calculation method may be arbitrarily combined, and the calculation result is used to evaluate the network traffic status.
  • determining whether to control the video conference network traffic refers to comparing the video conference network traffic status with a preset control threshold
  • the preset control threshold value is consistent with the selected video conference network traffic condition evaluation standard; when the network traffic condition is not good, that is, when the network traffic pressure is large, the video conference network traffic needs to be controlled to reduce the network traffic pressure. .
  • the result of the selected video conference network traffic status assessment method is: the greater the network traffic pressure, the higher the network traffic status comprehensive score;
  • the scheme for determining whether to control video conferencing network traffic is as follows:
  • the preset control threshold is 60.
  • the current network traffic status is 62, and the video conference network traffic is not currently controlled, it is determined to control the video conference network traffic;
  • the current network traffic status is 62, and the video conference network traffic is currently controlled, it is determined that the video conference network traffic is not controlled; wherein, the video conference network traffic is not controlled, and the control is not performed, indicating that the current network traffic control state is not controlled. Make changes.
  • the result of the selected video conference network traffic status assessment method is: the greater the network traffic pressure, the lower the network traffic status comprehensive score;
  • the scheme for determining whether to control video conferencing network traffic is as follows:
  • the preset control threshold is 40.
  • the current network traffic status is 30, and the video conference network traffic is currently controlled, it is determined that the video conference network traffic is not controlled; wherein, the video conference network traffic is not controlled, and the control is not performed, indicating that the current network traffic control state is not controlled. Make changes.
  • determining whether to release the video conference network traffic refers to comparing the video conference network traffic status with a preset release control threshold
  • the setting of the preset release control threshold is consistent with the selected video conference network traffic condition evaluation standard; when the network traffic condition recovers well, that is, the network traffic pressure is small, the video conference network traffic needs to be deactivated, and the general service is restored. status.
  • the preset control threshold is consistent with the setting of the preset release control threshold, and the preset control threshold is The representative network traffic status is worse than the network traffic status represented by the preset release control threshold. That is, when the network traffic status assessment reaches the preset control threshold, the network traffic pressure is large; the network traffic status assessment reaches the preset release control threshold. At the time, the pressure on the network traffic is small.
  • the result of the selected video conference network traffic status assessment method is: the smaller the network traffic pressure, the lower the network traffic status comprehensive score;
  • the scheme for determining whether to deactivate the video conference network traffic is as follows:
  • the preset release control threshold is 30;
  • the current network traffic status is 22, and the video conference network traffic is not currently controlled, it is determined that the video conference network traffic is not deactivated; wherein, the video conference network traffic is not released, indicating that the current network traffic control state is not changed.
  • the scheme for determining whether to deactivate the video conference network traffic is as follows:
  • the preset release control threshold is 70;
  • the judgment is made. It is determined that the video conference network traffic is not deactivated; wherein, the video conference network traffic is not deactivated, indicating that the current network traffic control state is not changed.
  • the method for controlling video conference network traffic disclosed in the embodiment of the present invention may be applied to a single-screen conference; or may be used for multi-screen conference.
  • the multi-screen conference When applied to a multi-screen conference, when controlling the video conference network traffic, the multi-screen conference is changed to a single-screen conference.
  • the change of the conference screen seen by the participant terminal is as shown in FIG. 7 , from left to right: non-broadcast source terminal Look at the screen changes and the screen changes seen by the broadcast source terminal.
  • the method for controlling the flow control of the video conference network After controlling the video conference network traffic, if the broadcast source switching is to be performed, the method includes:
  • the switch can be switched, the original broadcast source is notified that the terminal no longer sends the video data, and the new broadcast source terminal is notified to send the video data; only the video conference data of the new broadcast source terminal and the new broadcast source selection terminal is encoded and decoded.
  • the conference screen seen by the participant terminal is as shown in Figure 8. From left to right, the screen changes seen by other conference terminals, the screen changes seen by the original broadcast source terminal, and the new broadcast source. The picture changes to the screen; at this time, the original broadcast source terminal selects the terminal as a new broadcast source.
  • the data flow of the entire video conference system is as shown in FIG. 4, but according to the network traffic condition, after the network condition is not good, the video conference network flow control method provided in the embodiment of the present invention is executed.
  • the data flow of the entire video conferencing system is shown in Figure 5. It can be seen that all the terminals before the video conference network traffic control method provided by the embodiment of the present invention, including the broadcast source terminal, the broadcast source selection terminal, and other participating terminals in the conference, are performed when the network traffic condition is not good.
  • This paper also discloses a video conference network flow control system, including:
  • a traffic detection module configured to detect a video conference network traffic status
  • the flow control determination module is configured to determine whether to control the video conference network traffic according to the video conference network traffic status
  • the flow control module includes:
  • a call service sub-module configured to notify the non-broadcast source terminal and the non-broadcast source selection terminal to stop transmitting video data when the flow control determination module determines that the video conference network traffic is controlled;
  • the media service sub-module is configured to perform codec processing on the video conference data of the broadcast source terminal and the broadcast source selection terminal when the flow control determination module determines that the video conference network traffic is controlled.
  • the video conference network flow control system disclosed herein after the flow control is performed, is:
  • the traffic detection module is further configured to: after controlling the video conference network traffic, detect a video conference network traffic status;
  • the system further includes: a flow control release determining module, configured to determine whether to release the video conference network traffic according to the video conference network traffic status after controlling the video conference network traffic;
  • the call service sub-module is further configured to notify all the terminals to resume normal video conference data transmission when the flow control release determination module determines to release the control;
  • the media service sub-module is further configured to resume encoding and decoding the video conference data of all the terminals when the flow control release determination module determines that the control is released.
  • the system also includes:
  • a holding module configured to control, when the flow control determination module determines that the video conference network traffic is controlled, controlling other interactive messages that the participant terminal only retains audio data and maintains an active state.
  • the video conference network flow control system further supports broadcast source switching after performing flow control, including:
  • the switching determination module is configured to: after controlling the video conference network traffic, receive a broadcast source switching request, and determine whether the handover is possible;
  • the call service sub-module is further configured to notify the original broadcast source selection terminal that the video data is no longer sent when the handover determination module determines that the handover is possible; and notify the new broadcast source terminal to send the video data;
  • the media service sub-module is further configured to perform codec processing only on the video conference data of the new broadcast source terminal and the new broadcast source selection terminal when the handover determination module determines that the handover is possible.
  • the hold module is further configured to control, when the switch determination module determines that the switch can be switched, to control other interactive messages that the participant terminal only retains the audio data and remains active.
  • the modules included in the video conference network flow control system provided in the embodiments of the present invention may be separately set up or may be separately set up; the submodules may be separately set up or may be combined and set up; the modules and submodules may be separately It can also be set up by combining modules and sub-modules.
  • the module and the sub-module can communicate with each other through a custom interface, and can use Remote Procedure Call Protocol (RPC) communication, and is not limited to a specific communication protocol or interface.
  • RPC Remote Procedure Call Protocol
  • the method embodiment disclosed herein determines that the network traffic condition is not good according to the network traffic condition. That is, when the network bandwidth pressure is high, traffic control is performed, and only two-way video data interaction is performed on the necessary conference terminals in the current conference service, and only one-way video data interaction is performed on other non-essential conference terminals, and a small amount of audio data is retained and maintained.
  • the interactive message of the active state greatly reduces the data transmission traffic of the video conference network and alleviates the pressure of the network bandwidth.
  • the solution reduces the data transmission traffic of the video conference network, but does not sacrifice the video picture transmission quality of the necessary conference terminal, and fully satisfies the business requirements of the video conference.
  • the video conference network traffic control is released, and the normal service state is restored.
  • Also disclosed herein is a computer readable storage medium storing program instructions, which can implement a video conference network flow control method provided by an embodiment of the present invention when the program instructions are executed by a processor.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve. Thus, the invention is not limited to any specific combination of hardware and software.
  • the devices/function modules/functional units/function sub-modules in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • Each device/function module/functional unit/function sub-module in the above embodiment can be stored in a computer readable storage medium when it is implemented in the form of a software function module and sold or used as a stand-alone product.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the solution disclosed in the present invention determines that when the network traffic is in a bad state, that is, when the network bandwidth pressure is large, the traffic control is performed, and only the necessary conference terminals in the current conference service perform two-way video data interaction, but other non-essential
  • the conference terminal only performs one-way video data interaction, retains a small amount of audio data and maintains an active interactive message, which greatly reduces the data transmission traffic of the video conference network and alleviates the network bandwidth pressure.
  • the solution reduces the data transmission traffic of the video conference network, but does not sacrifice the video picture transmission quality of the necessary conference terminal, and fully satisfies the business requirements of the video conference.

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Abstract

本文公开了一种视频会议网络流量控制方法、系统和计算机可读存储介质，所述方法包括：检测视频会议网络流量状况；根据所述视频会议网络流量状况，判断是否控制所述视频会议网络流量；如果控制，则通知非广播源终端和非广播源选看终端停止发送视频数据；只对广播源终端和广播源选看终端的视频会议数据进行编解码处理。

Description

一种视频会议网络流量控制方法和系统 技术领域
本文涉及通信领域，尤其涉及一种视频会议网络流量控制方法、系统和计算机可读存储介质。
背景技术
伴随着互联网技术和图像处理技术的不断发展，视频会议系统逐步发展并得以应用。使用基于多种网络传输的视频会议系统，大大提升了人们工作生活沟通交流的便利程度，特别是极大提高了工作效率，降低了企业会议成本，在各个领域内被逐步普及并广泛应用。
当前，普遍使用的视频会议系统中，在召开会议时，所有的在会终端全部向多点控制单元(MCU)发送自己的音视频数据，MCU在收到各个终端的音视频数据后，进行编解码，然后再发给其他在会终端。如果基于一定的视频质量要求和业务性能要求，想要召开速率为2M的会议，MCU和每个终端之间就需要4M的网络带宽，如果该区域下召开了多组会议，那么对整个网络带宽将形成巨大压力。现有的技术中，在网络带宽不足或网络流量过大的情况下，为了保持基本的业务目标，采用的是降码率(如会议速率从2M降为1M)、降分辨率(如分辨率从720P变成4CIF)、降帧频(如帧率从30帧降为25帧)的方法，来从整体上降低对网络带宽的需求。这样的方法虽然可以一定程度上减轻局部网络流量的压力，但其代价是降低了会议中的画面质量。随着人们对画面质量的要求越来越高，这种以降低画面质量为代价的视频会议网络流量的控制方案，越来越不能满足业务发展的需要。因此，如何针对视频会议业务的特点，在不牺牲画面质量的情况下，更合理科学地控制网络流量，减轻网络流量压力，成为了必须要解决的问题。
发明内容
以下是对本文详细描述的主题的概述，本概述并非是为了限制权利要求的保护范围。
本文公开了一种视频会议网络流量控制的方法、系统和计算机可读存储介质，解决了在不牺牲画面质量的情况下，更合理科学地控制网络流量，减轻网络流量压力的问题。
一种视频会议网络流量控制方法，包括：
检测视频会议网络流量状况；
根据视频会议网络流量状况，判断是否控制视频会议网络流量；
如果控制，则通知非广播源终端和非广播源选看终端停止发送视频数据；只对广播源终端和广播源选看终端的视频会议数据进行编解码处理。
控制视频会议网络流量后，还包括：
检测视频会议网络流量状况；
根据视频会议网络流量状况，判断是否解除控制视频会议网络流量；
如果解除控制，则通知所有终端，恢复正常的视频会议数据传输；恢复对所有终端的视频会议数据进行编解码处理。
在控制视频会议网络流量时，控制其他在会终端只保留音频数据和保持激活状态的交互消息。
应用于多画面会议时，如果控制视频会议网络流量，则把多画面会议改变为单画面会议。
应用于多画面会议时，如果解除控制视频会议网络流量，则把单画面会议恢复为多画面会议。
在控制视频会议网络流量后，如果要进行广播源切换，包括：
接收广播源切换请求，判断是否可以切换；
如果可以切换，则通知原广播源选看终端不再发送视频数据，通知新广播源终端发送视频数据；只对新广播源终端和新广播源选看终端的视频会议数据进行编解码处理。
如果可以切换，其他在会终端只保留音频数据和保持激活状态的交互消息。
一种视频会议网络流量控制系统，包括：
流量检测模块，设置为检测视频会议网络流量状况；
流量控制判定模块，设置为根据视频会议网络流量状况，判断是否控制视频会议网络流量；
流量控制模块，包括：
呼叫服务子模块，设置为流量控制判定模块判定为控制视频会议网络流量时，通知非广播源终端和非广播源选看终端停止发送视频数据；
媒体服务子模块，设置为流量控制判定模块判定为控制视频会议网络流量时，只对广播源终端和广播源选看终端的视频会议数据进行编解码处理。
流量检测模块，还设置为在控制视频会议网络流量后，继续检测视频会议网络流量状况；
流量控制解除判定模块，设置为在控制视频会议网络流量后，根据视频会议网络流量状况，判断是否解除控制视频会议网络流量；
呼叫服务子模块，还设置为流量控制解除判定模块判定为解除控制时，通知所有终端恢复正常的视频会议数据传输；
媒体服务子模块，还设置为流量控制解除判定模块判定为解除控制时，恢复对所有终端的视频会议数据进行编解码处理。
保持模块，设置为流量控制判定模块判定为控制视频会议网络流量时，控制其他在会终端只保留音频数据和保持激活状态的交互消息。
切换判定模块，设置为在控制视频会议网络流量后，接收广播源切换请求，判断是否可以切换；
呼叫服务子模块，还设置为在切换判定模块判定可以切换时，通知原广播源选看终端不再发送视频数据；通知新广播源终端发送视频数据；
媒体服务子模块，还设置为在切换判定模块判定可以切换时，只对新广播源终端和新广播源选看终端的视频会议数据进行编解码处理。
保持模块，还设置为在切换判定模块判定可以切换时，控制其他在会终端只保留音频数据和保持激活状态的交互消息。
本文还公开一种计算机可读存储介质，存储有程序指令，当该程序指令 被处理器执行时可实现本发明实施例所提供的一种视频会议网络流量控制方法。
本发明实施例提供的方案，根据网络流量状况确定在网络流量状况不好，即网络带宽压力较大时，进行流量控制，只对当前会议业务中必要的会议终端执行双向视频数据交互，而对其他非必要会议终端只执行单向的视频数据交互，保留少量音频数据和保持激活状态的交互消息，大大减小了视频会议网络的数据传输流量，缓解了网络带宽压力。该方案降低了视频会议网络的数据传输流量，但并未牺牲必要会议终端的视频画面传输质量，充分满足了视频会议的业务需求。
可选地，在网络状况恢复良好后，解除所进行的视频会议网络流量控制，恢复到一般业务状态。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1为本文公开的视频会议网络流量控制系统的结构图；
图2为本文公开的视频会议网络流量控制方法的流程图；
图3为本文公开的视频会议网络流量解除控制的流程图；
图4为实施本文公开的视频会议网络流量控制方法前的视频会议系统数据流示意图；
图5为实施本文公开的视频会议网络流量控制方法后的视频会议系统数据流示意图；
图6为本文公开的视频会议广播源切换方法的流程图；
图7为本发明实施例中多画面会议中执行了流量控制后所有在会的非广播源和广播源所看的画面切换的示意图；
图8为本发明实施例中广播源切换前后各类终端所看到的画面切换的示意图。
本发明的较佳实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合附图及具体实施例对本发明作进一步的详细描述。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互任意组合。
本文公开了一种视频会议网络流量控制方法，当网络状况不好时进行流量控制，在不影响画面质量的前提下，减小网络流量压力。结合图2，实施例如下：
实施例一：
视频会议网络流量控制方法步骤如下：
步骤201：检测视频会议网络流量状况；
步骤202：根据所述视频会议网络流量状况，判断是否控制所述视频会议网络流量；如果控制，则进行步骤203和步骤204；
步骤203：通知非广播源终端和非广播源选看终端，停止发送视频数据；
步骤204：只对广播源终端和广播源选看终端的视频会议数据进行编解码处理；
其中，步骤203和步骤204的执行不限定先后。
本文公开了一种视频会议网络流量控制方法，在网络状况不好时，进行流量控制后，当网络流量状况恢复良好状况时，解除流量控制，恢复一般业务状态时的数据传输，结合图3，具体实施例如下：
实施例二：
视频会议网络流量控制后，解除流量控制的方法步骤如下：
步骤301：检测视频会议网络流量状况；
步骤302：根据所述视频会议网络流量状况，判断是否解除控制所述视频会议网络流量；如果解除控制，则进行步骤303和步骤304；
步骤303：通知所有终端，恢复正常的视频会议数据传输；
步骤304：恢复对所有终端的视频会议数据进行编解码处理；
其中，步骤303和步骤304的执行不限定先后。
可选地，视频会议网络流量状况是根据视频会议网络数据接收和/或发送状况评定得到；
例如，可以从以下一个或多个方面确定：
带宽占用率、网络延时和丢包率；
但是不限于以上具体举例的方面，还可以包括本领域内其他网络流量状况评定因素。
可以是以上各评定因素中至少一个因素的单独评定；也可以是各评定因素中部分或全部因素的组合评定；也可以是各评定因素的部分或全部的综合计算评定；针对本发明要解决的技术问题，不限于具体的确定视频会议网络流量状况的方法。
实施例三
网络数据接收和/或发送状况举例如下：
  带宽利用率 网络延时 丢包率
状况1 60％ 20ms 5％
状况2 30％ 10ms 10％
状况3 30％ 5ms 5％
状况4 70％ 10ms 8％
状况5 20％ 5ms 5％
根据上述视频会议网络数据接收和/或发送状况确定视频会议网络流量状况可以是：
视频会议网络流量状况＝带宽占用率*100；
得出以上5种状况下视频会议网络流量状况分别为：状况1-60，状况2-30，状况3-30，状况4-70，状况5-20。
或者，根据上述视频会议网络数据接收和/或发送状况的部分因素综合计算确定视频会议网络流量状况可以是：
视频会议网络流量状况＝(带宽占用率*100+网络延时/50*100)/2；
得出以上5种状况下视频会议网络流量状况分别为：状况1-50，状况2-25，状况3-20，状况4-45，状况5-15。
或者，根据上述视频会议网络数据接收和/或发送状况的全部因素综合计算确定视频会议网络流量状况可以是：
视频会议网络流量状况＝带宽占用率*100+网络延时+丢包率*100；
得出以上5种状况下视频会议网络流量状况分别为：状况1-85，状况2-50，状况3-40，状况4-88，状况5-40；
具体计算方式不限于本实施例的举例，可以包括一个或多个其他网络流量状况评定参数，各参数所占权重和具体的计算方法可以任意组合，其计算结果用于评定网络流量状况。
可选地，判断是否控制视频会议网络流量，是指根据视频会议网络流量状况与预设控制阀值进行比较；
其中，预设控制阀值的设置与所选择的视频会议网络流量状况评定标准相一致；网络流量状况不好时，即网络流量压力大时，需要控制视频会议网络流量，来减小网络流量压力。
可以是：
实施例四
选定的视频会议网络流量状况评定方式呈现的结果是：网络流量压力越大网络流量状况综合评分越高；
当视频会议网络流量状况大于预设控制阀值，且当前未控制视频会议网络流量时，则判定控制视频会议网络流量。
判定是否控制视频会议网络流量的方案，如下所示：
预设控制阀值为60，
当前网络流量状况为62，且当前未控制视频会议网络流量，则判定为控制视频会议网络流量；
或者，当前网络流量状况为62，且当前已控制视频会议网络流量，则判定为不控制视频会议网络流量；其中，不控制视频会议网络流量，不代表解除控制，表示不对当前的网络流量控制状态进行改变。
实施例五
选定的视频会议网络流量状况评定方式呈现的结果是：网络流量压力越大网络流量状况综合评分越低；
当视频会议网络流量状况小于预设控制阀值，且当前未控制视频会议网络流量时，则判定控制视频会议网络流量。
判定是否控制视频会议网络流量的方案，如下所示：
预设控制阀值为40，
当前网络流量状况为30，且当前未控制视频会议网络流量，则判定为控制视频会议网络流量；
或者，当前网络流量状况为30，且当前已控制视频会议网络流量，则判定为不控制视频会议网络流量；其中，不控制视频会议网络流量，不代表解除控制，表示不对当前的网络流量控制状态进行改变。
可选地，判断是否解除控制视频会议网络流量，是指根据视频会议网络流量状况与预设解除控制阀值进行比较；
其中，预设解除控制阀值的设置与所选择的视频会议网络流量状况评定标准相一致；网络流量状况恢复良好时，即网络流量压力小时，需要解除控制视频会议网络流量，恢复到一般的业务状态。
其中，预设控制阀值和预设解除控制阀值的设置一致，预设控制阀值所 代表的网络流量状况比预设解除控制阀值所代表的网络流量状况差，即网络流量状况评定达到预设控制阀值时，代表网络流量压力大；网络流量状况评定达到预设解除控制阀值时，代表网络流量压力小。
可以是：
实施例六
选定的视频会议网络流量状况评定方式呈现的结果是：网络流量压力越小网络流量状况综合评分越低；
当网络流量状况小于预设解除控制阀值，且当前已控制视频会议网络流量时，则判定解除控制视频会议网络流量。
判定是否解除控制视频会议网络流量的方案，如下所示：
预设解除控制阀值为30；
当前网络流量状况为22，且当前已控制视频会议网络流量，则判定为解除控制视频会议网络流量；
或者，当前网络流量状况为22，且当前未控制视频会议网络流量，则判定为不解除控制视频会议网络流量；其中，不解除控制视频会议网络流量，表示不对当前的网络流量控制状态进行改变。
实施例七
当选定的视频会议网络流量状况评定方式呈现的结果是：网络流量压力越小网络流量状况综合评分越高；
当网络流量状况大于预设解除控制阀值，且当前已控制视频会议网络流量时，则判定解除控制视频会议网络流量。
判定是否解除控制视频会议网络流量的方案，如下所示：
预设解除控制阀值为70；
当前网络流量状况为75，且当前已控制视频会议网络流量，则判定为解除控制视频会议网络流量；
或者，当前网络流量状况为75，且当前未控制视频会议网络流量，则判 定为不解除控制视频会议网络流量；其中，不解除控制视频会议网络流量，表示不对当前的网络流量控制状态进行改变。
可选地，本发明实施例中公开的视频会议网络流量控制的方法可以应用于单画面会议；也可以用于多画面会议。
应用于单画面会议时，控制所述视频会议网络流量时，每一个会议终端所看到的画面不变；
应用于多画面会议时，控制所述视频会议网络流量时，则把多画面会议改变为单画面会议。
应用于多画面会议时，执行本发明实施例中提供的视频会议网络流量控制方法前后，与会终端看到的会议画面的变化如图7所示，从左到右依次为：非广播源终端所看画面变化、广播源终端看到的画面变化。
应用于单画面会议时，解除控制所述视频会议网络流量时，每一个会议终端所看到的画面不变；
应用于多画面会议时，解除控制所述视频会议网络流量时，则把单画面会议恢复为多画面会议。
可选地，本文公开了一种视频会议网络流量控制的方法，在控制视频会议网络流量后，如果要进行广播源切换，包括：
接收广播源切换请求，判断是否可以切换；
如果可以切换，则通知原广播源选看终端不再发送视频数据，通知新广播源终端发送视频数据；只对新广播源终端和新广播源选看终端的视频会议数据进行编解码处理。
如果可以切换，其他在会终端只保留音频数据和保持激活状态的交互消息。
广播源切换后，与会终端看到的会议画面如图8所示，从左到右依次为：其他在会终端看到的画面变化、原广播源终端看到的画面变化、新广播源看 到的画面变化；此时原广播源终端作为新广播源选看终端。
现有视频会议技术方案中，整个视频会议系统数据流如图4所示，但是根据网络流量状况，在网络状况不好的情况下，执行本发明实施例中提供的视频会议网络流量控制方法后，整个视频会议系统的数据流为图5所示。可以看到，在网络流量状况不好时，执行本发明实施例所提供的视频会议网络流量控制方法前所有的终端，包括会议中的广播源终端、广播源选看终端、及其他在会终端，都与视频会议系统的相应服务模块进行音视频大数据流以及信令消息的双向交互；执行本发明实施例所提供的流量控制方法后，只有会议中的广播源终端和广播源选看端，与视频会议系统的相应服务模块进行音视频流交互，其他在会终端只接收视频会议系统的相应服务模块发来的视频数据和一些小流量的音频和信令消息。相当于执行流量控制后，其他在会终端的网络带宽减少了近50％大大减轻了网络带宽压力。
本文还公开了一种视频会议网络流量控制系统，包括：
流量检测模块，设置为检测视频会议网络流量状况；
流量控制判定模块，设置为根据所述视频会议网络流量状况，判断是否控制所述视频会议网络流量；
流量控制模块，包括：
呼叫服务子模块，设置为所述流量控制判定模块判定为控制所述视频会议网络流量时，通知非广播源终端和非广播源选看终端停止发送视频数据；
媒体服务子模块，设置为所述流量控制判定模块判定为控制所述视频会议网络流量时，只对广播源终端和广播源选看终端的视频会议数据进行编解码处理。
可选地，本文公开的视频会议网络流量控制系统，在执行流量控制后，在网络流量状况好转后，：
流量检测模块，还设置为在控制所述视频会议网络流量后，检测视频会议网络流量状况；
该系统还包括：流量控制解除判定模块，设置为在控制所述视频会议网络流量后，根据所述视频会议网络流量状况，判断是否解除控制所述视频会议网络流量；
呼叫服务子模块，还设置为所述流量控制解除判定模块判定为解除控制时，通知所有终端恢复正常的视频会议数据传输；
媒体服务子模块，还设置为所述流量控制解除判定模块判定为解除控制时，恢复对所有终端的视频会议数据进行编解码处理。
该系统还包括：
保持模块，设置为所述流量控制判定模块判定为控制所述视频会议网络流量时，控制其他在会终端只保留音频数据和保持激活状态的交互消息。
可选地，视频会议网络流量控制系统，在执行流量控制后，还支持进行广播源切换，包括：
切换判定模块，设置为在控制所述视频会议网络流量后，接收广播源切换请求，判断是否可以切换；
呼叫服务子模块，还设置为在所述切换判定模块判定可以切换时，通知原广播源选看终端不再发送视频数据；通知新广播源终端发送视频数据；
媒体服务子模块，还设置为在所述切换判定模块判定可以切换时，只对新广播源终端和新广播源选看终端的视频会议数据进行编解码处理。
保持模块，还设置为在所述切换判定模块判定可以切换时，控制其他在会终端只保留音频数据和保持激活状态的交互消息。
本发明实施例中提供的视频会议网络流量控制系统中所包括的模块可以各自单独设立，也可以多个合并设立；子模块可以各自单独设立，也可以多个合并设立；模块和子模块可以各自单独设立，也可以模块和子模块合并设立。
模块与子模块之间可以采用自定义接口通信，可以采用远程过程调用协议(Remote Procedure Call Protocol，RPC)通信，不限于具体的通信协议或接口。
本文公开的方法实施例，根据网络流量状况确定在网络流量状况不好， 即网络带宽压力较大时，进行流量控制，只对当前会议业务中必要的会议终端执行双向视频数据交互，而对其他非必要会议终端只执行单向的视频数据交互，保留少量音频数据和保持激活状态的交互消息，大大减小了视频会议网络的数据传输流量，缓解了网络带宽压力。该方案降低了视频会议网络的数据传输流量，但并未牺牲必要会议终端的视频画面传输质量，充分满足了视频会议的业务需求。
可选地，在网络状况恢复良好后，解除所进行的视频会议网络流量控制，恢复到一般业务状态。
本文还公开一种计算机可读存储介质，存储有程序指令，当该程序指令被处理器执行时可实现本发明实施例所提供的一种视频会议网络流量控制方法。
本领域普通技术人员可以理解上述实施例的全部或部分步骤可以使用计算机程序流程来实现，所述计算机程序可以存储于一计算机可读存储介质中，所述计算机程序在相应的硬件平台上(如系统、设备、装置、器件等)执行，在执行时，包括方法实施例的步骤之一或其组合。
可选地，上述实施例的全部或部分步骤也可以使用集成电路来实现，这些步骤可以被分别制作成一个个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
上述实施例中的各装置/功能模块/功能单元/功能子模块可以采用通用的计算装置来实现，它们可以集中在单个的计算装置上，也可以分布在多个计算装置所组成的网络上。
上述实施例中的各装置/功能模块/功能单元/功能子模块以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。上述提到的计算机可读取存储介质可以是只读存储器，磁盘或光盘等。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以权利要求所述的保护范围为准。
工业实用性
本文公开的方案，根据网络流量状况确定在网络流量状况不好，即网络带宽压力较大时，进行流量控制，只对当前会议业务中必要的会议终端执行双向视频数据交互，而对其他非必要会议终端只执行单向的视频数据交互，保留少量音频数据和保持激活状态的交互消息，大大减小了视频会议网络的数据传输流量，缓解了网络带宽压力。该方案降低了视频会议网络的数据传输流量，但并未牺牲必要会议终端的视频画面传输质量，充分满足了视频会议的业务需求。

Claims (13)

  1. 一种视频会议网络流量控制方法，包括：
    检测视频会议网络流量状况；
    根据所述视频会议网络流量状况，判断是否控制所述视频会议网络流量；
    如果控制，则通知非广播源终端和非广播源选看终端停止发送视频数据；只对广播源终端和广播源选看终端的视频会议数据进行编解码处理。
  2. 根据权利要求1所述的方法，其中，在控制所述视频会议网络流量后，所述方法还包括：
    检测所述视频会议网络流量状况；
    根据所述视频会议网络流量状况，判断是否解除控制所述视频会议网络流量；
    如果解除控制，则通知所有终端，恢复正常的视频会议数据传输；恢复对所有终端的视频会议数据进行编解码处理。
  3. 根据权利要求1所述的方法，其中，
    在控制所述视频会议网络流量时，控制其他在会终端只保留音频数据和保持激活状态的交互消息。
  4. 根据权利要求1所述的方法，其中，
    所述方法应用于多画面会议时，如果控制所述视频会议网络流量，则把多画面会议改变为单画面会议。
  5. 根据权利要求2所述的方法，其中，
    所述方法应用于多画面会议时，如果解除控制所述视频会议网络流量，则把单画面会议恢复为多画面会议。
  6. 根据权利要求1所述的方法，其中，在控制所述视频会议网络流量后，如果要进行广播源切换，所述方法还包括：
    接收广播源切换请求，判断是否可以切换；
    如果可以切换，则通知原广播源选看终端不再发送视频数据，通知新广 播源终端发送视频数据；只对新广播源终端和新广播源选看终端的视频会议数据进行编解码处理。
  7. 根据权利要求6所述的方法，其中，
    如果可以切换，其他在会终端只保留音频数据和保持激活状态的交互消息。
  8. 一种视频会议网络流量控制系统，包括：
    流量检测模块，设置为检测视频会议网络流量状况；
    流量控制判定模块，设置为根据所述视频会议网络流量状况，判断是否控制所述视频会议网络流量；
    流量控制模块，包括：
    呼叫服务子模块，设置为当所述流量控制判定模块判定为控制所述视频会议网络流量时，通知非广播源终端和非广播源选看终端停止发送视频数据；
    媒体服务子模块，设置为当所述流量控制判定模块判定为控制所述视频会议网络流量时，只对广播源终端和广播源选看终端的视频会议数据进行编解码处理。
  9. 根据权利要求8所述的系统，其中，
    所述流量检测模块，还设置为在控制所述视频会议网络流量后，检测所述视频会议网络流量状况；
    所述视频会议网络流量控制系统，还包括：
    流量控制解除判定模块，设置为在控制所述视频会议网络流量后，根据所述视频会议网络流量状况，判断是否解除控制所述视频会议网络流量；
    所述呼叫服务子模块，还设置为当所述流量控制解除判定模块判定为解除控制时，通知所有终端恢复正常的视频会议数据传输；
    所述媒体服务子模块，还设置为当所述流量控制解除判定模块判定为解除控制时，恢复对所有终端的视频会议数据进行编解码处理。
  10. 根据权利要求8所述的系统，还包括：
    保持模块，设置为当所述流量控制判定模块判定为控制所述视频会议网 络流量时，控制其他在会终端只保留音频数据和保持激活状态的交互消息。
  11. 根据权利要求8所述的系统，还包括：
    切换判定模块，设置为在控制所述视频会议网络流量后，接收广播源切换请求，判断是否可以切换；
    所述呼叫服务子模块，还设置为在所述切换判定模块判定可以切换时，通知原广播源选看终端不再发送视频数据；通知新广播源终端发送视频数据；
    所述媒体服务子模块，还设置为在所述切换判定模块判定可以切换时，只对新广播源终端和新广播源选看终端的视频会议数据进行编解码处理。
  12. 根据权利要求11所述的系统，还包括，
    保持模块，设置为在所述切换判定模块判定可以切换时，控制其他在会终端只保留音频数据和保持激活状态的交互消息。
  13. 一种计算机可读存储介质，存储有程序指令，当该程序指令被处理器执行时可实现权利要求1-7任一项所述的方法。
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