Real-time stream media transmission terminal and method based on multi-connection

Abstract

The invention provides a real-time stream media transmission terminal and a real-time stream media transmission method based on a multi-connection technology. The terminal is formed by additionally installing a signaling control unit and a media transmission unit on the basis of a single-connection terminal, the signaling control unit is in charge of completing the negotiation and the building of a multi-connection link, and the media transmission unit is in charge of completing the receiving and sending transmission function of the media. The real-time stream media transmission terminal and the real-time stream media transmission method have the innovation advantages that the multi-connection data transmission building possibility is improved, so the resource utilization rate and the transmission efficiency are improved, and more data can be transmitted in shorter time. In addition, through a jamming control algorithm, a flow rate distributing dispatching algorithm and a connection quality evaluation algorithm based on RTPs (real time protocols) and RTCPs (real-time transmission control protocols) adopted in the method provided by the invention, the data transmission speed can be obviously accelerated, the time delay is reduced, and the unnecessary fast re-transmission is reduced, so the experience effect of users is obviously improved.

Description

technical field [0001] The invention relates to a real-time streaming media transmission terminal and method based on multi-connection technology, belonging to the technical field of computers. Background technique [0002] In the existing multimedia transmission mode, the throughput capacity of the network is not used to the maximum extent. Moreover, with the development of network technology, more and more terminal devices (such as smartphones, tablet computers, laptops, etc.) have multiple access networks such as 2G, 3G and WiFi at the same time, which provides real-time multi-connection for streaming media. Transmission provides a very suitable application environment. [0003] Multi-connection transmission can make up for the shortcomings of single-connection transmission. It can maximize the effective bandwidth of multiple networks, dynamically adjust the transmission volume of each link in real time, and send streaming media files with maximum efficiency, thereby imp...

AI Technical Summary

Problems solved by technology

[0009] It is feasible and effective for this technical solution to carry multi-connection information by extending the SDP protocol, but its defect is: firstly, it does not consider the multi-connection characteristics in the case of a single network card. Does not have multi-connection features

[0011] This technical solution uses data packet headers to carry multi-connection information. Although the purpose of establishing multiple connections can be achieved, its disadvantages are: too much time is wasted for detecting whether the sending end or the receiving end supports new available address ports Information will also increase the byte size of the packet header, so that the data packets of the same byte size carry less useful data information. At the same time, by continuing to add available connections on the basis of established single connections, the In the initial stage, it is likely that the purpose of aggregated effective bandwidth in the largest range cannot be achieved, so the effect of this technical solution is often unsatisfactory

[0014] This technical solution does not consider the different attributes and dynamic characteristics of multiple connections, and the problem of dynamic changes in the distribution and transmission of data traffic on multiple connections (that is, the problem of dynamic changes in load balancing strategies), and does not consider For the special application scenarios of real-time streaming media, the special requirements for packet loss and retransmission: it should try to meet the user's experience requirements of small delay and as few packet loss as possible

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