Flow control method based on feedback of client terminal
A flow control and client-side technology, applied in electrical digital data processing, electrical components, transmission systems, etc., can solve the problems of inability to meet the requirements of streaming media video on demand, inability to know the status of the client, loss of RTCP information, etc., to reduce The number of packets sent, the effect of reducing network congestion, and smoothing the packet sending rate
Inactive Publication Date: 2004-06-30
TSINGHUA UNIV
View PDF0 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0030] However, due to the high requirements of real-time streaming media, the return information once every 5 seconds, in this case, seems too long and cannot meet the current requirements of streaming media video on demand
In addition, the return information of RTCP is transmitted through UDP, and UDP itself is an unreliable transmission protocol. Therefore, when some special situation occurs in the network, RTCP information is very likely to be lost.
In this way, for a long period of time (compared to streaming video on demand), the server cannot know the status of the client, and can only blindly send data packets
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0059] A flow control method based on client feedback proposed by the present invention is described in detail in conjunction with the accompanying drawings and specific embodiments as follows:
[0060] The overall process of the specific embodiment of the method of the present invention is as follows image 3 As shown, it mainly includes the following steps:
[0061] 1) Between the client and the server, open the video-on-demand service according to the standard RTSP protocol;
[0062] 2) The client sets up a timer during the process of receiving data packets. Every second, the relevant information (network actual available bandwidth, packet loss rate and CPU utilization) is counted and compared with the threshold (the threshold set here is based on the fact that the actual network bandwidth is not less than 500kbsp, and the packet loss rate is less than 10 %, CPU utilization is lower than 35% to set);
[0063] 3) When the viewing effect of the client becomes worse, that i...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A throughput control method based on client feedback includes starting broadcast-on-demand service according to standard RTSP protocol on client and server, counting the information about received data packets by client, sending feedbakc information to server, receiving the information by server, regulating transmission speed by server according to lost package rate, and transmitting video file in batche by server until all files are transmitted. Its advantages are smooth transmission speed, low network load and good watching effect at client terminal.
Description
technical field [0001] The invention belongs to the field of computer multimedia technology, in particular to streaming media technology and playback control protocol Background technique [0002] In the past, most of the data transmitted on the network was text data. Today, with the improvement of multimedia and network technology, multimedia has become an indispensable feature on the Internet. At present, the delivery of multimedia data on the network mainly takes the form of streaming media. Streaming media refers to continuous time-based media using streaming technology in the Internet / Intranet, such as audio, video or multimedia files. Streaming media does not download the entire file before playing, but only stores the beginning part in memory, and the data stream of streaming media is transmitted and played at any time, but there is some delay at the beginning. [0003] At present, the main control protocol of multimedia real-time application on the network is RTSP...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/42H04L29/06
Inventor 戴琼海李炜段艳丽曾珂
Owner TSINGHUA UNIV