Method and device for media data transmission

Abstract

An embodiment of the invention relates to the network technology field and discloses a media data transmission method and an apparatus thereof. The method comprises the following steps of acquiring a network parameter used for expressing a current network state; according to the network parameter, determining a packet loss type of a current network, wherein the packet loss type includes a congestion packet loss or a random link packet loss; and based on the packet loss type, adjusting a transmission mode of current network streaming media data. In the invention, for the different packet loss types, different streaming media data transmission mode adjusting can be performed, a high data throughput rate is guaranteed and transmission quality of the streaming media data is increased.

Description

technical field [0001] The invention relates to the field of network technology, in particular to a media data transmission method and device. Background technique [0002] In recent years, the explosive development of computer networks, especially the widespread application of a large number of multimedia real-time services, poses new challenges to the traditional transport layer protocols based on Transmission Control Protocol (TCP). Most multimedia applications are very sensitive to delay, but they have a certain fault-tolerant mechanism and can tolerate a small amount of packet loss. Such applications require a transport protocol with low overhead and fast response, and the transport does not have to be completely reliable. In addition, jitter is also a problem that has a great impact on multimedia applications, and the Additive Increase Multiplicative Decrease (AIMD) strategy used by TCP congestion control will cause a large jitter in the transmission rate. At present...

AI Technical Summary

Problems solved by technology

[0005] The existing TFRC-based UDP network transmission framework estimates the available bandwidth of the network by detecting the frequency of packet loss events. The calculation method of the frequency of packet loss events attributes all packet loss events to network congestion. However, in practical applications, even if there is no network congestion , the transmission of streaming media data cannot be completed with 100% accuracy

Especially under mobile network conditions, reasons such as link multipath weakness, external source interference, and mobile switching may cause random link packet loss. Such packet loss will cause the TFRC protocol to blindly reduce the transmission rate and affect the transmission protocol. throughput

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