| Summary: | 碩士 === 國立中正大學 === 電機工程研究所 === 105 === In recent years, the service of multimedia transmission becomes universal due to the rapid development of wireless networks. Smart phone and tablet PC become more and more popularization, bring more convenience to people. The transmission of video streaming service for wireless is becoming increasingly popular, and most have a compressed video stream into different specifications to meet users for different bandwidth demand. However, bandwidth detection mechanism is very important in the transmission of video streaming. Using the information of bandwidth detection will make the clients to be high-quality services.
The proposed bandwidth detection mechanism, which method is that encapsulate the video stream files become probing packet, and it do not need any additional burden. It has advantage of both active and passive measurement of detection. In this paper, the method used to calculate the bandwidth of self-made, so you can upgrade the client bandwidth detection accuracy. For the easily packet loss of wireless network environment, the methods we adopted, avoid the large amount of error from bandwidth detection due to packet loss, it can improve the accuracy. Our methods are proved to be superior to other bandwidth detection tools in measured results.
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