2015/05/08 by Hui Wang, Wang, Hui, Mun Choon Chan +3
Computer Science · Engineering · #Advanced Wireless Network Optimization #Cooperative Communication and Network Coding #FOS: Computer and information sciences #Multimedia (cs.MM) #Networking and Internet Architecture (cs.NI) #Wireless Networks and Protocols #cs.MM #cs.NI
paper · pdf · doi:10.48550/arxiv.1505.01933
arxiv created 2015/05/08 · openalex publication_date 2015/05/08 · arxiv updated 2015/05/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Zoomable video streaming refers to a new class of interactive video applications, where users can zoom into a video stream to view a selected region of interest in higher resolutions and pan around to move the region of interest. The zoom and pan effects are typically achieved by breaking the source video into a grid of independently decodable tiles. Streaming the tiles to a set of heterogeneous users using broadcast is challenging, as users have different link rates and different regions of interest at different resolution levels. In this paper, we consider the following problem: given the subset of tiles that each user requested, the link rate of each user, and the available time slots, at which resolution should each tile be sent, to maximize the overall video quality received by all users. We design an efficient algorithm to solve the problem above, and evaluate the solution on a testbed using 10 mobile devices. Our method is able to achieve up to 12dB improvements over other heuristic methods.