Name
Abstract | ||
|---|---|---|
Deploying virtual reality (VR) streaming systems over wireless networks can provide an immersive environment for users without behavioral restrictions, and thus has drawn considerable attentions recently. MPEG-I as a new panorama video standard just targets such immersive multimedia applications. Although multiple VR delivery schemes have been proposed, MPEG-I has not been sufficiently researched, especially for multicast scenarios. Therefore, in this paper, we would like to design a multicast scheme to deliver 360 VR videos with MPEG-I format. Specifically, based on the prediction of users' viewports, we formulate an optimization problem of user grouping and bandwidth allocation to maximize user utilities. To solve the problem, we first propose a method which is composed of an optimal bandwidth allocation algorithm and a two-level hierarchical user grouping scheme. Furthermore, we consider the channel feedback overhead in multicast scenarios with a large number of users. Based on a reasonable assumption, we propose a simplified grouping method with low feedback overhead. Simulation results demonstrate the effectiveness of our proposed method, which yields similar performance compared to an exhausting search method when serving a large number of users with high SNRs. |
Year | DOI | Venue |
|---|---|---|
2019 | 10.1109/ACCESS.2019.2957856 | IEEE ACCESS |
Keywords | DocType | Volume |
MPEG-I, multicast, user grouping, resource allocation, virtual reality, QoE | Journal | 7 |
ISSN | Citations | PageRank |
2169-3536 | 0 | 0.34 |
References | Authors | |
0 | 4 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Zhang Zhilong | 1 | 0 | 0.34 |
| Zhanghui Ma | 2 | 0 | 0.34 |
| Yan Sun | 3 | 0 | 0.34 |
| Danpu Liu | 4 | 56 | 18.35 |