CN104104924A - Third-generation (3G) network based video monitoring system bandwidth self-adaption transmission method - Google Patents
Third-generation (3G) network based video monitoring system bandwidth self-adaption transmission method Download PDFInfo
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- CN104104924A CN104104924A CN201410368269.5A CN201410368269A CN104104924A CN 104104924 A CN104104924 A CN 104104924A CN 201410368269 A CN201410368269 A CN 201410368269A CN 104104924 A CN104104924 A CN 104104924A
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Abstract
The invention discloses a third-generation (3G) network based video monitoring system bandwidth self-adaption transmission method applicable to a sending end and a receiving end connected through a 3G network. The 3G network based video monitoring system bandwidth self-adaption transmission method includes steps that the sending end performs compressed encoding on a real-time video to be sent, sends a video user datagram protocol (UDP) data packet through a private protocol, dynamically adjusting a sending rate according to a feedback message sent by the receiving end, and performs accumulative confirmation and retransmission on video data lost by the receiving end; the receiving end receives the video UDP data package, counts packet loss conditions, requests the sending end to perform retransmission and provides the sending end with network conditions. By means of the technology, when a bandwidth of a transmission network is low or poor in stability, the 3G network based video monitoring system bandwidth self-adaption transmission method is capable of guaranteeing high-efficiency sending of data frames to a monitoring end and guaranteeing monitoring effects without influencing real-time and complete transmission of video images.
Description
Technical field
The present invention relates to 3G field of video monitoring, is by a kind of method of 3G network transmitting realtime stream media, is specifically related to a kind of video monitoring system bandwidth self-adaption transmission method based on 3G network.
Background technology
Along with improving constantly of the security requirement of people to live and work environment, the importance of safety and protection system is just more and more outstanding.Wherein, the feature that video monitoring system is directly perceived with it, convenient, the information content is abundant is more and more subject to people's attention, and becomes the important component part of safety and protection system.In recent years, along with the develop rapidly of computer, network and image processing, transmission technology, video monitoring technology processed also obtains develop rapidly.
3G network wireless transmitting system is a brand-new network technology, can provide video image and sound for public security prevention and control, synchronously realize remote collection, transmission, storage and the processing capacity of data, there is long transmission distance, speed is fast, antijamming capability is strong, without the advantage such as cable laying, cost of investment be low.
But in utilizing 3G network transmission live video stream, even if the image of transmission CIF is also not little to the requirement of bandwidth, and the feature that current 3G network exists is exactly unstable, network signal is easily subject to the impact of weather.The in the situation that of unstable networks, browse the phenomenon that real-time video just there will be card, even cannot watch.The packet loss of data plays conclusive effect to the effect of real-time monitoring.
In order to address the above problem, in the time carrying out wireless video real-time Transmission, conventionally to adopt and reduce the code rate of video or the method for frame per second at present, or adopt the mode that extracts I frame, realize the transmission of real-time video, but reduction code check can have influence on the broadcasting definition of video.
For this reason, applicant has invented a kind of based on mobile communication network, can better adapt to the method for work of real-time video monitoring in unstable networks situation, and the method can effectively realize long-range real-time video monitoring, for social civilization, living safety plays very important effect.
Summary of the invention
The technical problem to be solved in the present invention is: provide under a kind of wireless environment, energy adaptive network situation, in the situation that network quality is poor, can improve the quality of transmission of video and the transmission method of efficiency of transmission and transmission system.
The technical solution adopted in the present invention is:
A video monitoring system bandwidth self-adaption transmission method based on 3G network, is applied to the transmitting terminal and the receiving terminal that connect by 3G network, and described method comprises the steps:
1) the Real-time Video Compression coding that transmitting terminal sends wish;
2) transmitting terminal sends video UDP message bag by proprietary protocol, and dynamically adjusts transmission rate according to the feedback message of receiving terminal transmission, and the video data that receiving terminal is lost adds up to confirm to retransmit;
3) receiving terminal receiver, video UDP message bag, adds up packet drop, requires transmitting terminal to retransmit and offer transmitting terminal network condition.
Described step 2) in, it is that sender inside has two queues that data are retransmitted to the mechanism adopting, one is queue to be sent, one is transmit queue, after frame data subpackage, add queue to be sent, after transmission, add and sent out row, sent out queue and be mainly used in retransmitting.
There are two threads described sender inside, is responsible for sending packet for one for sending envelope curve journey, and another one thread is responsible for the control bag that recipient sends over, and processes according to controlling bag.
In described step 3), be divided into 3 kinds of situations:
A) normal condition (not having retransmission packet to need to send);
B) send the data in queue to be sent according to current data, after sending, add and send row;
C) there is retransmission packet to need to send, wait for that retransmission packet is sent completely.
An Adaptive Transmission system for 3G wireless network monitoring remote video, described system comprises Video coding transmitting element, 3G network, server receiving terminal and receiving terminal, wherein:
The effect of Video coding transmitting element is that the raw video image collecting is carried out to H.264 compressed encoding, and by the transmission mechanism described in above-mentioned arbitrary claim, by transmitting terminal, video data is passed to server receiving terminal by 3 G networks;
Server can be detected the situation of network, receives the video data from transmitting terminal, and adds up packet drop, carries out the re-transmission of UDP bag or abandons whole non-I frame data;
Receiving after complete frame data, forwarding the data to the receiving terminal of request video;
Receiving terminal receives the forwarding video from server, the broadcasting of decoding.
Apply a transmission method for above-mentioned transmission system, described transmission method comprises the steps:
The original code check collecting is carried out H.264 compressed encoding by transmitting terminal;
Transmitting terminal is put into transmit queue by sending data, with the packet loss repeat requests of respond services end;
Receiving terminal receives data, adds up to confirm simultaneously, and photos and sending messages is told transmitting terminal, until certain packet is all complete, without packet loss;
Transmitting terminal receives after receiving terminal feedack, give out a contract for a project bag in buffering and former data fallen clearly, because this part data receiver has all been received;
Receiving terminal needs packet loss to retransmit, and tells transmitting terminal to have packet loss to need to retransmit, and transmitting terminal is received after this report finding corresponding bag to retransmit in transmit queue.
Beneficial effect of the present invention is: adopt technology of the present invention, in the time that the bandwidth of transmission network is lower or stability is not good, the present invention can do not affect video image in real time, under the prerequisite of complete transmission, ensure expeditiously Frame to be sent to monitoring client, ensured the effect of monitoring.
Brief description of the drawings
Fig. 1 is transmission of video process schematic diagram of the present invention;
Fig. 2 is transmission system structural representation of the present invention.
Embodiment
Below by accompanying drawing, in conjunction with embodiment, the present invention is further described:
Embodiment 1:
As shown in Figure 2, a kind of Adaptive Transmission system of 3G wireless network monitoring remote video, described system comprises Video coding transmitting element, 3G network, server receiving terminal and receiving terminal, wherein:
The effect of Video coding transmitting element is that the raw video image collecting is carried out to H.264 compressed encoding, and by the transmission mechanism described in above-mentioned arbitrary claim, by transmitting terminal, video data is passed to server receiving terminal by 3 G networks;
Server can be detected the situation of network, receives the video data from transmitting terminal, and adds up packet drop, carries out the re-transmission of UDP bag or abandons whole non-I frame data;
Receiving after complete frame data, forwarding the data to the receiving terminal of request video;
Receiving terminal receives the forwarding video from server, the broadcasting of decoding.
Embodiment 2:
A transmission method for Application Example 1 transmission system, described transmission method comprises the steps:
The original code check collecting is carried out H.264 compressed encoding by transmitting terminal;
Transmitting terminal is put into transmit queue by sending data, with the packet loss repeat requests of respond services end;
Receiving terminal receives data, adds up to confirm simultaneously, and photos and sending messages is told transmitting terminal, until certain packet is all complete, without packet loss;
Transmitting terminal receives after receiving terminal feedack, give out a contract for a project bag in buffering and former data fallen clearly, because this part data receiver has all been received;
Receiving terminal needs packet loss to retransmit, and tells transmitting terminal to have packet loss to need to retransmit, and transmitting terminal is received after this report finding corresponding bag to retransmit in transmit queue.
Claims (6)
1. the video monitoring system bandwidth self-adaption transmission method based on 3G network, is applied to the transmitting terminal and the receiving terminal that connect by 3G network, it is characterized in that, described method comprises the steps:
1) the Real-time Video Compression coding that transmitting terminal sends wish;
2) transmitting terminal sends video UDP message bag by proprietary protocol, and dynamically adjusts transmission rate according to the feedback message of receiving terminal transmission, and the video data that receiving terminal is lost adds up to confirm to retransmit;
3) receiving terminal receiver, video UDP message bag, adds up packet drop, requires transmitting terminal to retransmit and offer transmitting terminal network condition.
2. a kind of video monitoring system bandwidth self-adaption transmission method based on 3G network according to claim 1, it is characterized in that: described step 2) in, it is that sender inside has two queues that data are retransmitted to the mechanism adopting, one is queue to be sent, one is transmit queue, after frame data subpackage, add queue to be sent, after transmission, add and sent out row, sent out queue and be mainly used in retransmitting.
3. a kind of video monitoring system bandwidth self-adaption transmission method based on 3G network according to claim 2, it is characterized in that: there are two threads described sender inside, one for sending envelope curve journey, be responsible for sending packet, another one thread is responsible for the control bag that recipient sends over, and processes according to controlling bag.
4. according to a kind of video monitoring system bandwidth self-adaption transmission method based on 3G network described in claim 1,2 or 3, it is characterized in that: in described step 3), be divided into 3 kinds of situations:
A) normal condition, does not have retransmission packet to need to send;
B) send the data in queue to be sent according to current data, after sending, add and send row;
C) there is retransmission packet to need to send, wait for that retransmission packet is sent completely.
5. according to the Adaptive Transmission system of a kind of 3G wireless network monitoring remote video described in above-mentioned arbitrary claim, it is characterized in that: described system comprises Video coding transmitting element, 3G network, server receiving terminal and receiving terminal, wherein:
The effect of Video coding transmitting element is that the raw video image collecting is carried out to H.264 compressed encoding, and by the transmission mechanism described in above-mentioned arbitrary claim, by transmitting terminal, video data is passed to server receiving terminal by 3 G networks;
Server can be detected the situation of network, receives the video data from transmitting terminal, and adds up packet drop, carries out the re-transmission of UDP bag or abandons whole non-I frame data;
Receiving after complete frame data, forwarding the data to the receiving terminal of request video;
Receiving terminal receives the forwarding video from server, the broadcasting of decoding.
6. be applied to a kind of video monitoring system bandwidth self-adaption transmission method based on 3G network that requires system described in 5, it is characterized in that, described transmission method comprises the steps:
The original code check collecting is carried out H.264 compressed encoding by transmitting terminal;
Transmitting terminal is put into transmit queue by sending data, with the packet loss repeat requests of respond services end;
Receiving terminal receives data, adds up to confirm simultaneously, and photos and sending messages is told transmitting terminal, until certain packet is all complete, without packet loss;
Transmitting terminal receives after receiving terminal feedack, and by giving out a contract for a project, bag in buffering and former data are fallen clearly;
Receiving terminal needs packet loss to retransmit, and tells transmitting terminal to have packet loss to need to retransmit, and transmitting terminal is received after this report finding corresponding bag to retransmit in transmit queue.
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Cited By (6)
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| CN104768081A (en) * | 2015-04-17 | 2015-07-08 | 武汉兴图新科电子股份有限公司 | Packet loss retransmission method for achieving flow control |
| CN104837004A (en) * | 2015-05-08 | 2015-08-12 | 天脉聚源(北京)传媒科技有限公司 | Method and device for transmitting 3D (Three-Dimensional) data |
| CN106792263A (en) * | 2016-12-09 | 2017-05-31 | 东方网力科技股份有限公司 | A kind of method of transmitting video data, apparatus and system |
| CN109818789A (en) * | 2019-01-22 | 2019-05-28 | 苏州科达科技股份有限公司 | Picture transmission method and system, storage medium, electronic equipment |
| CN110113662A (en) * | 2019-04-18 | 2019-08-09 | 浙江工业大学 | A kind of video monitor client system adapting to multiple network situation |
| CN113900901A (en) * | 2021-10-21 | 2022-01-07 | 北京达佳互联信息技术有限公司 | Data reporting method, data monitoring method, device, equipment and storage medium |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104768081A (en) * | 2015-04-17 | 2015-07-08 | 武汉兴图新科电子股份有限公司 | Packet loss retransmission method for achieving flow control |
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| CN106792263A (en) * | 2016-12-09 | 2017-05-31 | 东方网力科技股份有限公司 | A kind of method of transmitting video data, apparatus and system |
| CN109818789A (en) * | 2019-01-22 | 2019-05-28 | 苏州科达科技股份有限公司 | Picture transmission method and system, storage medium, electronic equipment |
| CN110113662A (en) * | 2019-04-18 | 2019-08-09 | 浙江工业大学 | A kind of video monitor client system adapting to multiple network situation |
| CN110113662B (en) * | 2019-04-18 | 2021-08-24 | 浙江工业大学 | Video monitoring client system suitable for various network conditions |
| CN113900901A (en) * | 2021-10-21 | 2022-01-07 | 北京达佳互联信息技术有限公司 | Data reporting method, data monitoring method, device, equipment and storage medium |
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