Mapping parameter dynamic adaptive wireless streaming media transmission control method

Abstract

The invention discloses a mapping parameter dynamic adaptive wireless streaming media transmission control method, which comprises the following steps of: 1) adding initial priority identifiers in a network transmission layer according to the importance of video frames by using the video stream coding of an application layer, and mapping nodes to corresponding priorities according to final priority identifiers of each data frame in a medium access control (MAC) layer respectively; 2) according to real-time network load distribution and the congestion conditions of each priority queue, dynamically calculating the mapping possibilities of each video frame to the corresponding priorities based on the characteristics of each video frame; 3) adopting a bidirectional mapping mechanism for key frames and adopting a double downward mapping mechanism for other enhancement layer data frames according to real-time network conditions; and 4) feeding information back to the application layer and the transmission layer according to current network conditions and video frame mapping results by using the MAC layer. By the method, the network throughput is effectively increased, relatively shorterreal-time video transmission delay is achieved and video stream transmission quality is improved.

Description

technical field [0001] The invention relates to a real-time streaming media transmission method in a wireless local area network based on the IEEE 802.11e standard. Background technique [0002] Mobile streaming media is a new type of mobile service that transmits streaming media data to mobile users in real time through mobile networks and mobile terminals, providing mobile users with new communication methods and business enjoyment for sharing their experiences and emotions, obtaining information and entertainment, and communicating with others . With the increase of wireless channel bandwidth, the improvement of mobile device performance (increased computing power, power management, etc.) and popularization, streaming media transmission and applications will become Mobile Ad hoc network (MANET) in the near future Application hotspots. [0003] With the development of video coding technology, it becomes possible to efficiently transmit real-time video information in a wi...

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the deficiencies of the existing wireless streaming media transmission control method, such as small network throughput, large real-time video transmission delay, and poor transmission quality, the present invention provides a method that effectively improves network throughput and has small real-time video transmission delay. , A wireless streaming media transmission control method for dynamically adapting mapping parameters to improve the quality of video streaming transmission

Images