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Method and device for packaging real-time transport protocol data

A real-time transmission protocol and data packet technology, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve the problems of framing delay, inability to quickly identify, and framing delay, so as to reduce the framing delay. time, quickly know the effect of the frame type

Active Publication Date: 2015-01-28
HANGZHOU HIKVISION DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the existing packaging method, after the receiving end receives the RTP data packet, it needs to analyze it through a specific algorithm to know the frame type of the RTP data, which cannot be quickly identified
[0004] Moreover, there is a certain delay in framing
After receiving the RTP data packet, the receiving end will perform framing. A frame is composed of at least one RTP data packet; the existing method for judging whether the current frame is over is as follows: the timestamp of each frame is different, and the RTP data packet is marked with its The time stamp of the frame, each time framing needs to wait for the RTP data packet of the next frame to appear, and it can be determined whether the current frame is over by checking whether the time stamp is updated, which causes the delay of framing
[0005] In summary, the existing schemes for packaging RTP data cannot quickly obtain the frame type, and there is a delay in framing

Method used

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  • Method and device for packaging real-time transport protocol data

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments and accompanying drawings.

[0021] In the packing process, the present invention combines the padding field and the P bit of the header to mark the frame type and the position of the RTP data packet in the data frame. The method that the present invention packs RTP data comprises: adding a header for each package packet, marking the P bit in the header as having padding, and determining the frame type bit, frame start bit and The frame end bit is marked to obtain the encapsulated RTP data packet; the encapsulated RTP data packet is sent. By adopting the solution of the present invention, the frame type can be directly known and whether the current frame ends can be directly known through the P bit of the header and the mark of the padding field in each RTP data packet, so tha...

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Abstract

The invention discloses a method and device for packaging real-time transport protocol (RTP) data. The method comprises the steps of adding heads for all packaging bags, marking P positions in the heads as being filled, marking the determined frame type bits, frame start bits and frame end bits in filler fields of the RTP to obtain packaged RTP data packages, and sending the packaged RTP data packages, wherein the frame type bits are used for marking frame types, and the frame start bits and the frame end bits are used for marking positions of the corresponding packaging bags in a data unit. According to the scheme, the frame types can be obtained rapidly, and the framing delay is shortened.

Description

technical field [0001] The invention relates to data packaging technology, in particular to a method and device for packaging real-time transmission protocol data. Background technique [0002] At present, in the data transmission scheme of the Real-time Transport Protocol (RTP, Realtime Transport Protocol), the RFC3550 method is often used to encapsulate and package the data units, and then the encapsulated RTP data packets are sent. [0003] There are various types of RTP data, including video data, audio data, private data, and the like. With the existing packaging method, after the receiving end receives the RTP data packet, it needs to analyze it through a specific algorithm to know the frame type of the RTP data, which cannot be quickly identified. [0004] Moreover, there is a certain delay in framing. After receiving the RTP data packet, the receiving end will perform framing. A frame is composed of at least one RTP data packet; the existing method for judging whet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/955H04L12/951H04L47/43H04L47/431
CPCH04L69/22H04L65/65
Inventor 辛安民
Owner HANGZHOU HIKVISION DIGITAL TECH