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An Energy-Efficient Scalable Video Coding Method for Wireless Transmission of Real-time Streaming Media

A technology of video coding and wireless transmission, which is applied in transmission system, digital video signal modification, image communication, etc., and can solve unresolved QoS guarantee problems and other issues

Active Publication Date: 2019-06-18
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Relying on accurate channel state information, it does not solve the QoS guarantee problem in the case of channel fluctuations for each user

Method used

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  • An Energy-Efficient Scalable Video Coding Method for Wireless Transmission of Real-time Streaming Media
  • An Energy-Efficient Scalable Video Coding Method for Wireless Transmission of Real-time Streaming Media
  • An Energy-Efficient Scalable Video Coding Method for Wireless Transmission of Real-time Streaming Media

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Embodiment Construction

[0048] In this embodiment, the real-time streaming media in an energy-efficient scalable video coding real-time streaming media wireless transmission method is a video stream composed of N coding layers, and the N coding layers include: 1 basic layer and N- 1 enhancement layer; note that the data rate of the video stream composed of the first n coding layers is u n , the data rate set is U={u n ,n=1,...,N}; H is the discretized channel gain set; B represents the channel estimation state set, and B=H; control action Indicates that the first n coding layer data are selected for transmission, and the control action set Define the strategy as in Indicates that a control action is taken when the channel estimation state is b The probability of ; record the set of deterministic strategies as Let L(b)=d u equivalent expression

[0049] Specifically, if figure 1 As shown, the wireless transmission method includes transmission control from step 3 to step 5 and strategy ...

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Abstract

The invention discloses a high-energy-efficiency scalable video coding real-time streaming media wireless transmission method, which is characterized by: performing selection and transmission control of the streaming media scalable coding layer based on channel state estimation with random errors; based on partly considerable Markov decision-making The process model is used for performance analysis and strategy optimization; the online strategy iteration algorithm is used for adaptive optimization of the transmission control strategy of the coding layer. The present invention can realize the optimization of transmission energy efficiency by adaptive adjustment of traffic through the selective transmission of the video coding layer, thereby effectively improving the transmission energy efficiency while ensuring the quality QoS of real-time streaming media video.

Description

technical field [0001] The invention belongs to the field of wireless multimedia communication, and specifically relates to a high-energy-efficiency scalable video coding real-time streaming media wireless transmission method. Background technique [0002] With the rapid development of digital and mobile communication technologies, network multimedia services through wireless ubiquitous access have increased dramatically in recent years. Due to the popularity of video-related applications and smart mobile terminals, more than half of wireless data traffic currently consists of streaming media, and it is expected to reach more than two-thirds in the next ten years. The high transmission rate requirements of wireless streaming media transmission lead to a sharp increase in the energy consumption of wireless transmission. Based on environmental and economic considerations, improving the energy efficiency of wireless transmission has become an important topic in the design and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04N19/127H04N19/142H04N19/156
CPCH04N19/127H04N19/142H04N19/156H04L65/75H04L65/70
Inventor 江琦唐昊奚宏生
Owner HEFEI UNIV OF TECH
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