Quality Adaptation Algorithm for Streaming over CoAP
Waqas ur Rahman, Young-Seok Choi, Kwangsue Chung · 2018
This paper presents a quality adaptation algorithm for multimedia streaming over constrained application protocol (CoAP) in the Internet of Things (IoT) environment. The proposed scheme is designed to improve user experience by meeting the video quality objectives in a constrained wireless environment. To achieve this, the proposed scheme increases or decreases the video quality by taking the throughput of the available wireless link and segment download time into consideration. The algorithm decides to aggressively or conservatively increase the video quality based on the sizes of the upcoming segments. In addition, the algorithm decreases the video rate by predicting the buffer level at the download of the next segment. The results show that the proposed algorithm improves user experience by achieving high quality video and mitigating the risk of playback interruptions.