A real-time streaming coding method for multi-channel environment

A coding method and real-time streaming technology, applied in the field of information theory coding, can solve the problems of wasted channel utilization, inability to fully utilize multi-channel resources, etc., and achieve the effect of avoiding redundant waste, rational use, and reasonable channel resources.

Inactive Publication Date: 2017-02-22
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0003] However, most of the current real-time stream coding technologies are designed for single-channel environments.
To use multiple channels to transmit a real-time stream in parallel, it is often necessary to resort to upper-layer protocols (such as P2P), which cannot fully utilize multi-channel resources
Not only that, but the current real-time stream encoding mechanism has a lot of waste in channel utilization. Taking Skype, a very widely used real-time conversation tool, as an example, the information redundancy rate used for forward error correction is 4.5 times that of the real error

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  • A real-time streaming coding method for multi-channel environment
  • A real-time streaming coding method for multi-channel environment
  • A real-time streaming coding method for multi-channel environment

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[0033] In order to facilitate those skilled in the art to understand the technical content of the present invention, the content of the present invention will be further explained below in conjunction with the accompanying drawings.

[0034] The technical solution of the present invention is: a real-time stream encoding method for a multi-channel environment, firstly establish a real-time stream transmission system model from the core to the downlink, and obtain the upper limit of the theoretical transmission capacity of the real-time stream in multi-channel, aiming at the theoretical transmission capacity The upper limit adopts the corresponding encoding mechanism;

[0035] A real-time streaming system model such as figure 1 Shown: including the source node, the sink node, and π (the theoretical value range of π is an integer from 1 to infinity, but in practical applications, the common values ​​are 2, 3, 4, etc.) burst erasing channels, each The channel capacity c correspon...

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Abstract

The invention discloses a real-time stream coding method for a multi-channel environment, aiming at improving the transmission efficiency of a real-time stream service in a multi-channel environment, aiming at real-time streams containing information frames of different priorities, it is found that such real-time streams are used more than once The upper limit of the theoretical transmission capacity when multiple channels are jointly transmitted, and according to the situation that the real-time stream belongs to symmetric or asymmetric real-time stream, the corresponding coding mechanism is designed to realize the parallel transmission of a real-time stream by multiple channels, and can reasonably use channel resources to avoid redundancy. I wasted.

Description

technical field [0001] The invention relates to the field of information theory coding, in particular to establishing a system model for business transmission under burst erasing multi-channel, and proposes a coding mechanism that can gradually reach the upper limit of theoretical transmission capacity for the multi-channel model. Background technique [0002] With the rapid development of Internet applications, the requirements of various services for network transmission capabilities continue to increase. In particular, the real-time streaming service represented by real-time video has a large business volume and occupies a lot of transmission resources, which brings heavy traffic pressure to various networks, especially various wireless networks. In order to make more effective use of scattered resources and improve the ability to transmit real-time streams, it may be considered to integrate the remaining available resources of multiple channels for multi-channel encoding...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06
CPCH04L65/1066H04L65/60
Inventor 韦云凯黄航宇胡周姹毛玉明李娜
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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