Data transmission method based on RTP

A data transmission method and technology of the transmission method are applied in the field of data transmission based on RTP, which can solve the problem that the streaming media system cannot ignore the network environment, and achieve the effect of overcoming the problem of disorder.

Inactive Publication Date: 2009-03-25
BEIJING JIAXUN FEIHONG ELECTRIC CO LTD
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AI Technical Summary

Problems solved by technology

[0004] The streaming media system cannot ignore the impact of changes in the network environment. These changes include the "out-of-order arrival" of data packets, and th

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  • Data transmission method based on RTP
  • Data transmission method based on RTP
  • Data transmission method based on RTP

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Embodiment Construction

[0024] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0025] The streaming media system is composed of various software systems that communicate and interact with each other. A basic streaming media system must include three modules: encoder, server and player, such as figure 1 shown. Modules communicate with each other through a specific protocol, and exchange data with each other in a specific format. The encoder is used to convert the original audio and video into a suitable stream format file, the server sends the encoded media stream to the client, and the client player is responsible for decoding and playing the received media data.

[0026] The server is responsible for encapsulating the encoded data into RTP packets and sending them to the network. After each f...

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Abstract

The invention discloses an RTP-based data transmitting method in the technical field of computer network multimedia communication. The technical scheme is as follows: assuming that the size of the sliding window is data packets numbering n; inserting the received data packets into the sliding window and sorting; when the difference between the maximum serial number and the minimum serial number of the sorted data packets is larger than or equal to n, starting to output the sorted data packet from the minimum serial number, wherein if the serial number is continuous, the data packets can be outputted, and if the serial number is not continuous, the previous data packet is taken as the minimum serial number of the next sorting; if the difference between the maximum serial number of the data packet, the serial number of which is not continuous at the start, and the maximum serial number of the current sorted data packet is larger than n, confirming that the data packet is missing; and if the serial number of the data packets numbering n is continuous, the previous data packets numbering n-1 are outputted, and the data packets numbering n is taken as the minimum serial number of the data packet in the next sorting. The invention avoids the problem of the disorder during the process of data packet transmitting.

Description

technical field [0001] The invention belongs to the technical field of computer network multimedia communication, and in particular relates to an RTP-based data transmission method. Background technique [0002] With the development of Internet technology, the application of streaming media technology is becoming more and more extensive, and streaming media transmission has the characteristics of real-time and continuity. By adopting different bit rate transmission, users can enjoy high-quality audio and video programs online in different network environments ranging from tens of kbit / s low bandwidth to tens of Mbit / s high bandwidth. According to the characteristics of streaming media data, because a small amount of errors and losses in audio and video data have little impact on the final playback quality, in order to avoid the delay caused by reliable transmission and improve the real-time performance of data, the real-time transmission protocol RTP is adopted. [0003] Re...

Claims

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Application Information

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IPC IPC(8): H04L1/00
Inventor 姜圳
Owner BEIJING JIAXUN FEIHONG ELECTRIC CO LTD
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