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Transmission method aiming at time-delayed sensitive data

A transmission method and a time-delay-sensitive technology, applied in the field of data transmission, can solve problems such as unsatisfactory solutions, unsatisfactory results, and low video bit rate.

Inactive Publication Date: 2012-09-05
INST OF ACOUSTICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in terms of video communication, there is no solution that has achieved good results
The main difficulty of video communication is reflected in its higher bit rate (up to hundreds of Kbps), the required bandwidth is difficult to guarantee on the Internet, and the synchronization of audio and video needs to be considered
Some current video communication solutions (such as QQ) have low video code rate, low resolution, and small window, and the effect is not satisfactory

Method used

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  • Transmission method aiming at time-delayed sensitive data
  • Transmission method aiming at time-delayed sensitive data
  • Transmission method aiming at time-delayed sensitive data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] like figure 1 As shown, the overlay network platform is deployed with 6 nodes, and each node is responsible for providing services for a certain number of service terminals. The node and the terminal it is responsible for can be in the same premises network or the network of the same Internet access provider. The audio and video communication data between nodes is carried by RTP / UDP.

[0051] When service terminal A has audio and video data to send to service terminal B, A first sends a request to its ON node S1, the request includes the IP address of B, the IP address of the overlay network node S2 to which B belongs, etc.

[0052] After receiving the request from A, S1 queries the path performance table maintained by itself. If it cannot select 3 paths with performance that meets the requirements (for example, the delay is less than 300ms), it follows the paths r0, r1, r2, r3, and r4 respectively. Send 5 probe packets to S2. Among them, r0 is a direct IP path betwe...

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Abstract

The invention provides a transmission method aiming at time-delayed sensitive data. The method is realized on the basis of an overlapped network platform and comprises the following steps: (1) a source service terminal sends a data transmission request to a source ON node transferred for an agent flow, wherein the data transmission request comprises a network address of a target terminal and a network address of a target ON node transferred for the agent flow of the target terminal; (2) the source ON node selects n transmission paths reaching the target ON node from a local transmission path table; (3) the source ON node transfers data pockets of the source service terminal to the target ON node according to the selected transmission paths, wherein the adjacent data pockets are dispersed to different transmission paths for transmission; and (4) the target ON node transfers the data pockets to a target service terminal. The invention can reduce the time delay and lower the time-delayedvariation, has a certain fault-tolerance and can effectively prevent the pockets from continuously losing, thereby improving the audio-visible quality.

Description

technical field [0001] The present invention relates to a data transmission method implemented on a network, and in particular, the present invention particularly relates to a transmission method for delay-sensitive data. Background technique [0002] As people develop more and more applications based on the Internet, especially delay-sensitive applications such as VoIP and video communication are also implemented on the Internet, the best-effort feature of the Internet is increasingly unable to meet the needs of applications. [0003] At the IP level, people have researched and developed a variety of technologies, such as RSVP, DiffServ, and MPLS traffic engineering, to provide different quality of service guarantees for different traffic. However, the implementation of these technologies requires the transformation of the Internet infrastructure, which cannot be achieved overnight. In recent years, applications based on P2P overlay network technology have been widely popu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L12/56H04L47/32
Inventor 王劲林李挺屹倪宏王玲芳
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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