Intelligent terminal-oriented progressive network adaptive transmission method
A self-adaptive transmission and progressive grid technology, applied in the transmission system, digital transmission system, wireless network protocol, etc., can solve the problems that cannot take into account real-time performance and graphics quality
Active Publication Date: 2014-09-03
ZHEJIANG UNIV OF TECH
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[0006] In order to overcome the shortcomings of the existing streaming media network transmission methods for intelligent terminals that cannot take into account both real-time and graphic quality, the present invention provides a progressive network automatic control system for intelligent terminals that is based on real-time performance and has good graphic quality. Adapt to the transfer method
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[0040] The present invention will be further described below in conjunction with the accompanying drawings.
[0041] refer to Figure 1 ~ Figure 3 , a progressive network adaptive transmission method for smart terminals. Firstly, the three-dimensional graphics are preprocessed such as compression, and a hierarchical progressive grid is generated and quantized; the display and rendering capabilities of the receiving terminal are detected, and the communication channel conditions are monitored, such as For network bandwidth and packet loss rate, the amount of data to be transmitted is determined according to the resolution of the terminal and network conditions, and the smallest data set that can satisfy the mobile terminal is selected for transmission; the three-dimensional graphics data is constructed into a data packet and sent to the network. At the receiving end, the compressed 3D data is reconstructed and sent to the corresponding 3D decoder by building a receiving packet....
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The invention discloses an intelligent terminal-oriented progressive network adaptive transmission method. The method comprises the following steps of: 1) performing meshing and compression processing on a three dimensional (3D) data flow to be transmitted, generating a progressive network which consists of a base network and a series of level offset vectors, and dividing geometry data into an important part and a secondary part according to the influence degree of the geometry data on model quality; 2) detecting the display and render capability of a receiving terminal, monitoring communication channel conditions, and selecting a minimum data set which can meet a mobile terminal for transmission; 3) dividing the base network and the important part of the geometry data into different data packets, and transmitting the data packets by utilizing a transmission channel of a transmission control protocol (TCP); and dividing the secondary part of the geometry data into different data packets, and transmitting the data packets by utilizing a transmission channel of a user datagram protocol (UDP); and 4) receiving the data packets by the receiving terminal, and reconstructing the 3D data flow by a packet construction module. The method has the advantages of real-time performance and good graph quality.
Description
technical field [0001] The invention relates to a network transmission method of an intelligent terminal, in particular to a streaming media network transmission method of an intelligent terminal. Background technique [0002] The rapid growth and development of intelligent terminals has given birth to the demand for real-time multimedia applications based on wireless networks. Multimedia data is divided into data packets for transmission in the network. Each data packet has a frame representing data information and providing data routing. However, a small part of the data packet is always transmitted in the general medium due to the distance between the two terminals. If it is too large, it will be lost, and most of the data packets will reach the destination terminal. [0003] There are three error control methods for network transmission packet loss: (1) The error control method based on the sender is FEC. The sender estimates the situation of the communication line such...
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IPC IPC(8): H04L1/00H04W80/06
Inventor 马建平陈渤
Owner ZHEJIANG UNIV OF TECH