CN101114982A - IP network based audio-video QoS algorithm - Google Patents
IP network based audio-video QoS algorithm Download PDFInfo
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- CN101114982A CN101114982A CNA200610061800XA CN200610061800A CN101114982A CN 101114982 A CN101114982 A CN 101114982A CN A200610061800X A CNA200610061800X A CN A200610061800XA CN 200610061800 A CN200610061800 A CN 200610061800A CN 101114982 A CN101114982 A CN 101114982A
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Abstract
The invention relates to an audio-video QoS algorithm based on an IP internet, and the procedures thereof are as follows: inspection packets which are sent at a preset time interval by a server and a user end in a bidirectional way comprise a timestamp and a serial number; the quality of the network transmission is judged by the inspection packet received from a counterpart; when jitter and reordering appears, a system utilizes FEC forward error correction and packet-dropout automatic retransmission to restore quickly according to delay and packet loss rate. In a situation of severe shortage of bandwidth, video frames are deserted to assure the arrival of the audio frames and data frames. The invention solves the problem of the instability of network transmission, which enhances the quality of network transmission from aspects of restoration and intelligent packet dropping.
Description
Technical field
The present invention relates to a kind of audio frequency and video technology of IP based network.
Background technology
Along with further popularizing of IP network and the Internet, the video conferencing system of IP based network is used also more and more widely.Because IP network self bandwidth is uneven, time delay is big, and instability can not guarantee good audio frequency and video quality.Be embodied in the following aspects:
1, the network bandwidth, promptly per second network institute can data quantity transmitted.Bandwidth is big more, just can allow the more data transmission.Though the bandwidth of the Internet has had very big improvement in recent years at present, the quality in broadband is uneven, higher network packet loss rate and bigger situations such as network jitter often occur.
2, data transmission capabilities.Traditional IP only provides the data transmission capabilities of " doing one's best ", only guarantees it is complete packet when sending out, and does not guarantee when the recipient receives it also is complete.Along with the continuous increase of host number on the network, the ability that the demand of network service will provide above network, propagation delay time changes (shake), propagation delay time is excessive even cause packet loss thereby cause.Network congestion is used some Internet, can not cause too big influence as Email, file transfer and Web use; But propagation delay time is required relatively harsher real-time application, but is flagrant as the audio frequency and video transmission of video conference.The common ground of wireless network aspect mobile communication system is an error rate height, and this can cause very big influence to the audio frequency and video transmission in the video conference.
3, network queuing.There is a lot of nodes in the network, as router, gateway etc.The order that these nodes adopt the queuing mechanism determination data to provide.If longer in moment node data queuing, this node will take the mode of packet discard to guarantee the operate as normal of node.Even without being dropped, after long queuing, these packets often will spend long time could arrive the destination, have just produced the time delay and the delay variation of network thus.
Summary of the invention
Technical problem to be solved by this invention is the defective that remedies prior art, proposes a kind of from reparation, intelligent packet loss aspect raising Network Transmission method for quality.
Technical problem of the present invention is solved by the following technical programs:
The audio-video QoS algorithm of this IP based network comprises the steps:
1) server end and user side detect bag with two-way transmission of the time interval of setting, the detection bag that is sent comprises timestamp, sequence number, and statistics storage correlated quality data, described correlated quality data comprise the local bag number that sends bag, local initiatively packet loss number, the bag number that local network receives, total number of long-range transmission bag, the bag number that telecommunication network receives, the maximum round trip time RTT of long-range active packet loss number and bag;
2) detect the detection bag that the other side that user side and server termination receive sends, whether the time interval of the reception packet when detecting bag and receive according to two-way transmission consistent judges whether network is shaken and calculated time-delay, whether whether the sequence number order when receiving according to two-way transmission detection bag produces out of order definite network out of order, detects according to two-way transmission and whether judge packet loss continuously and calculate packet loss when the sequence number that wraps receives;
3) according to time-delay and packet loss, system adopts FEC Forward Error Correction and packet loss to retransmit fast automatically and repairs;
4) detect bag with the two-way transmission of designated time intervals, under the situation of bandwidth greater than the band width in physical of channel of audio frame, frame of video and the Frame addition transmitted, abandon frame of video, guarantee that audio frame and Frame can arrive.
Income effect of the present invention is: the two-way transmission of server end and user side detects bag, and the situation of monitor network transmission in real time is for next step processing is prepared.System adopts FEC Forward Error Correction and packet loss to retransmit automatically and repairs the packet of makeing mistakes fast, has guaranteed the accuracy of data.When extreme unstable situation appears in network, abandon frame of video, guarantee to make audio frame and Frame to be sent to, under the situation that reduces quality, do not influence the identifiability of information.
Description of drawings
Fig. 1 is the flow chart of the audio-video QoS algorithm of IP network.
Embodiment
Also the present invention is described in further detail in conjunction with the accompanying drawings below by specific embodiment.
Embodiment
As shown in Figure 1, a kind of audio-video QoS algorithm of IP based network comprises the steps:
1) at first, the user end to server end is initiated connection request, and server end is replied, and connects with client;
2) server end and user side detect bag with two-way transmission of the time interval of setting, and the detection bag that is sent comprises timestamp, sequence number;
3) detect the detection bag that the other side that user side and server termination receive sends, receiving cycle when detecting the bag reception according to two-way transmission is judged shake and is calculated time-delay, it is out of order whether the sequence number order when detecting the bag reception according to two-way transmission is judged continuously, detect whether judge packet loss and calculating packet loss when the sequence number that wraps receives continuously according to two-way transmission, computing formula is: (Ns-Nr)/and Ns * 100%, wherein Ns is for sending packet, and Nr is the data accepted bag;
4) when appearance is shaken and be out of order, according to time-delay and packet loss, system adopts FEC Forward Error Correction and quick reparation of the automatic re-transmission of packet loss;
5) detect bag with the two-way transmission of designated time intervals, the audio frame in transmission abandons frame of video under the situation of bandwidth greater than the band width in physical of channel of frame of video and Frame addition, guarantees that audio frame and Frame can arrive.
According to the needs of transmission, the use QoS algorithm of repetition is handled data, to guarantee the quality of Network Transmission.
Claims (1)
1. the audio-video QoS algorithm of an IP based network comprises the steps:
1) server end and user side detect bag with two-way transmission of the time interval of setting, the detection bag that is sent comprises timestamp, sequence number, and statistics storage correlated quality data, described correlated quality data comprise the local bag number that sends bag, local initiatively packet loss number, the bag number that local network receives, total number of long-range transmission bag, the bag number that telecommunication network receives, the maximum round trip time RTT of long-range active packet loss number and bag;
2) detect the detection bag that the other side that user side and server termination receive sends, whether the time interval of the reception packet when detecting bag and receive according to two-way transmission consistent judges whether network is shaken and calculated time-delay, whether whether the sequence number order when receiving according to two-way transmission detection bag produces out of order definite network out of order, detects according to two-way transmission and whether judge packet loss continuously and calculate packet loss when the sequence number that wraps receives;
3) according to time-delay and packet loss, system adopts FEC Forward Error Correction and packet loss to retransmit fast automatically and repairs;
4) detect bag with the two-way transmission of designated time intervals, under the situation of bandwidth greater than the band width in physical of channel of audio frame, frame of video and the Frame addition transmitted, abandon frame of video, guarantee that audio frame and Frame can arrive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA200610061800XA CN101114982A (en) | 2006-07-24 | 2006-07-24 | IP network based audio-video QoS algorithm |
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| CNA200610061800XA CN101114982A (en) | 2006-07-24 | 2006-07-24 | IP network based audio-video QoS algorithm |
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| CNA200610061800XA Pending CN101114982A (en) | 2006-07-24 | 2006-07-24 | IP network based audio-video QoS algorithm |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101001130B (en) * | 2007-01-23 | 2010-05-19 | 华为技术有限公司 | Method and device for monitoring Iub interface packet-loss rate |
| CN101252425B (en) * | 2008-04-09 | 2010-10-27 | 杭州华三通信技术有限公司 | Loss package error correcting method and system of self-adapting network |
| CN102111618A (en) * | 2011-01-20 | 2011-06-29 | 德科仕通信(上海)有限公司 | Method and system for improving correctness of calculating number of video transport stream (TS) packet losses |
| WO2013060298A1 (en) * | 2011-10-28 | 2013-05-02 | 华为技术有限公司 | Method, device, and system for network testing under ipsec protocol |
| WO2013185480A1 (en) * | 2012-06-15 | 2013-12-19 | 华为技术有限公司 | Method and device for obtaining throughput rate |
| US8693333B2 (en) | 2008-10-31 | 2014-04-08 | Huawei Technologies Co., Ltd. | Method, network node and system for suppressing lost packet retransmission |
| CN103716136A (en) * | 2013-12-23 | 2014-04-09 | 上海网达软件股份有限公司 | Data transmission method and system |
| WO2017036286A1 (en) * | 2015-08-31 | 2017-03-09 | 华为技术有限公司 | Method and device for measuring remote timestamp unit |
| CN107395448A (en) * | 2017-06-01 | 2017-11-24 | 国网福建省电力有限公司 | A kind of 2M communication checks method and detection device |
| CN107864084A (en) * | 2016-09-22 | 2018-03-30 | 腾讯科技（深圳）有限公司 | The transmission method and device of packet |
| CN108965775A (en) * | 2017-05-25 | 2018-12-07 | 中兴通讯股份有限公司 | Method of adjustment, device and the storage medium of data packetloss processing strategie |
| CN111263239A (en) * | 2018-12-03 | 2020-06-09 | 北京新唐思创教育科技有限公司 | Video frame packet loss processing method and related device |
| US10693799B2 (en) | 2016-09-22 | 2020-06-23 | Tencent Technology (Shenzhen) Company Limited | Calling method and device, computer storage medium, and terminal |
| CN111970578A (en) * | 2020-08-27 | 2020-11-20 | 北京三体云联科技有限公司 | Method and device for repairing audio and video data transmission |
| CN114567579A (en) * | 2022-03-01 | 2022-05-31 | 武汉心驰神往科技有限公司 | Frame synchronization global quality monitoring method and device and readable access medium |
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- 2006-07-24 CN CNA200610061800XA patent/CN101114982A/en active Pending
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101001130B (en) * | 2007-01-23 | 2010-05-19 | 华为技术有限公司 | Method and device for monitoring Iub interface packet-loss rate |
| CN101252425B (en) * | 2008-04-09 | 2010-10-27 | 杭州华三通信技术有限公司 | Loss package error correcting method and system of self-adapting network |
| US8693333B2 (en) | 2008-10-31 | 2014-04-08 | Huawei Technologies Co., Ltd. | Method, network node and system for suppressing lost packet retransmission |
| CN102111618A (en) * | 2011-01-20 | 2011-06-29 | 德科仕通信(上海)有限公司 | Method and system for improving correctness of calculating number of video transport stream (TS) packet losses |
| CN102111618B (en) * | 2011-01-20 | 2012-09-05 | 德科仕通信(上海)有限公司 | Method and system for improving correctness of calculating number of video transport stream (TS) packet losses |
| WO2013060298A1 (en) * | 2011-10-28 | 2013-05-02 | 华为技术有限公司 | Method, device, and system for network testing under ipsec protocol |
| CN103095511A (en) * | 2011-10-28 | 2013-05-08 | 华为技术有限公司 | Network measurement method, device and system under internet protocol security (IPsec) mechanism |
| RU2580454C2 (en) * | 2011-10-28 | 2016-04-10 | Хуавей Текнолоджиз Ко., Лтд. | Method, device and system for network testing at work mechanism ipsec |
| WO2013185480A1 (en) * | 2012-06-15 | 2013-12-19 | 华为技术有限公司 | Method and device for obtaining throughput rate |
| CN103716136A (en) * | 2013-12-23 | 2014-04-09 | 上海网达软件股份有限公司 | Data transmission method and system |
| WO2017036286A1 (en) * | 2015-08-31 | 2017-03-09 | 华为技术有限公司 | Method and device for measuring remote timestamp unit |
| US10503807B2 (en) | 2015-08-31 | 2019-12-10 | Huawei Technologies Co., Ltd. | Method and apparatus for measuring time stamp unit of remote device |
| CN107864084A (en) * | 2016-09-22 | 2018-03-30 | 腾讯科技（深圳）有限公司 | The transmission method and device of packet |
| CN107864084B (en) * | 2016-09-22 | 2019-06-21 | 腾讯科技（深圳）有限公司 | The transmission method and device of data packet |
| US10693799B2 (en) | 2016-09-22 | 2020-06-23 | Tencent Technology (Shenzhen) Company Limited | Calling method and device, computer storage medium, and terminal |
| CN108965775A (en) * | 2017-05-25 | 2018-12-07 | 中兴通讯股份有限公司 | Method of adjustment, device and the storage medium of data packetloss processing strategie |
| CN107395448A (en) * | 2017-06-01 | 2017-11-24 | 国网福建省电力有限公司 | A kind of 2M communication checks method and detection device |
| CN111263239A (en) * | 2018-12-03 | 2020-06-09 | 北京新唐思创教育科技有限公司 | Video frame packet loss processing method and related device |
| CN111970578A (en) * | 2020-08-27 | 2020-11-20 | 北京三体云联科技有限公司 | Method and device for repairing audio and video data transmission |
| CN111970578B (en) * | 2020-08-27 | 2022-10-28 | 北京世纪好未来教育科技有限公司 | Method and device for repairing audio and video data transmission |
| CN114567579A (en) * | 2022-03-01 | 2022-05-31 | 武汉心驰神往科技有限公司 | Frame synchronization global quality monitoring method and device and readable access medium |
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Application publication date: 20080130 |