Speed control method in wireless streaming media transmission
A streaming media transmission and rate control technology, applied in transmission systems, wireless communications, digital transmission systems, etc., can solve the problem that the transmission rate cannot adapt to channel changes, and improve the quality of streaming media transmission, service quality and wireless channel utilization. rate, reducing the effect of jagged fluctuations
A streaming media transmission and rate control technology, applied in transmission systems, wireless communications, digital transmission systems, etc., can solve the problem that the transmission rate cannot adapt to channel changes, and improve the quality of streaming media transmission, service quality and wireless channel utilization. rate, reducing the effect of jagged fluctuations
CN102710374AInactive Publication Date: 2012-10-03TIANJIN UNIV
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[0044] Based on the above considerations, the present invention proposes a rate control method for wireless streaming media transmission aiming at improving the service quality and channel utilization rate of wireless streaming media transmission. This method is based on the streaming media transmission system, and at the receiving end of the system, the parameters such as the packet loss rate and the business data passing rate are counted at a shorter time interval than the traditional rate control method. Based on the above two parameters, the streaming media is predicted by the improved AIMD algorithm. The service data transmission rate is fed back to the sender by the TCP protocol after the rate switching is determined to be valid. Compared with the traditional streaming media rate control method, the invention can make the streaming media transmission rate adapt to the bandwidth of the wireless channel more accurately, thereby ensuring the service quality of the streaming ...
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The invention relates to wireless multimedia communication. In order to alleviate transmission quality shaking caused by an unreliable wireless channel when streaming media is transmitted in the wireless environment, further improve the transmission quality and increase the utilization ratio of the wireless channel. The technical scheme adopted by the invention is as follows: compared with a traditional speed control method, a speed control method in wireless streaming media transmission is characterized by comprising the following steps: obtaining the packet loss rate and business data passing rate parameters by smoothing treatment in a shorter interval; adjusting the streaming media transmission speed based on the parameters and an improved additive increase and multiplicative decrease algorithm, when the channel is in underload, determining the speed amplification by a variable constant additive factor and a constant additive factor determined by the packet loss, and when the channel is in overload, determining the speed reduction range by a variable constant multiplicative factor and a constant reductive factor determined by the packet loss; and setting a speed switching threshold, regarding the speed switching to be effective only when the difference between the current predicting speed and the previous predicting speed exceeds the set threshold. The speed control method in the wireless streaming media transmission is mainly applied to wireless multimedia communication.
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technical field [0001] The invention belongs to the technical field of wireless multimedia communication, and relates to a rate control method for guaranteeing service quality of wireless streaming media transmission based on packet loss rate, service data pass rate and an improved AIMD algorithm. Specifically, it relates to a method based on constraint A solver for spatial problems that meets the framework. Background technique [0002] In recent years, with the rapid development of communication technology, network technology, and video codec technology, the service content of network communication has become more colorful. Multimedia communication combined with information transmission such as voice, video, and data has become an inevitable trend in the development of communication services. Among them, multimedia video communication has become a research hotspot due to its characteristics of continuous transmission, large data volume, and high requirements for real-time ...
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Patent Timeline
03 Oct 2012
Publication
CN102710374A
- IPC
- H04L1/00; H04W28/04
- Inventors
- ζ¨ζη; θ‘θͺθ