This paper addresses a novel virtual reality (VR) system that is based on the real world in which we live. The ultimate goal to implement it as though VR user freely exists place. To this end, most important reconstruct space provides six degree-of-freedom (DOF), namely, yaw, pitch, roll, surge, sway, and heave. However, currently released services are limit users' movements three DOF. Even if support DOF, highly complex computer graphics. overcome problem, first assume there full Internet...

Recently, interest in contents utilizing 360 and Virtual Reality images is increasing. These are generally transformed into Equirectangular projection transmitted a 2:1 ratio rectangular shape. However, this method causes distortion of the upper lower parts which widely spread. Furthermore, since spread requires higher data rate, it difficult to transmit high quality (e.g. 4K) on band-limited channel. Therefore, paper, we propose for efficient image stitching, receivers can stitch themselves...

For 360 VR video, the user's viewport is portion, but video needs to be sent 360° spheres. So requires large bandwidth. In this paper, we propose a prediction method solve problem. The proposed predicts by utilizing location information of sound sources in video. Especially, considered based on MPEG-DASH, and its feasibility also shown our head tracking simulation.

The transmission of multi-view or free-view 360VR contents, which selects the viewer's viewpoint and experiences consumes a very large bandwidth. In cellular environment in multiple users exist, only limited bandwidth can be allocated to specific user, thus quality is inevitably deteriorated delay occurs. case multi-viewpoint content, if viewer changes position viewpoint, contents corresponding are transmitted. bandwidth-limited communication environment, occurs when moved, resulting poor...

We consider an inter-layer FEC technique combined with hierarchical 16QAM schemes for stereoscopic video transmission over AWGN relay channels. The proposed system the suitable value (α) can gain about 2.26-6.18 dB in average PSNR performance, compared using conventional and schemes.

Recently, as 360 contents are explosively increased, studies on how to create, store, and transmit being actively carried out. However, the content is very significant at a large resolution with little viewing area for user time. Also, shooting process limited in production, since image editing requires high-end computer process, there problem that various people not easily accessible. In addition, mentioned above, transmission, actually viewed by small compared be transmitted. Therefore,...

In this paper, we investigate the effective use of UAV as flight base stations for users using wireless services. UAV's limited battery usage time leads to hover limitation, and propose Adaptive UAV-AP Positioning & Cell-Partition framework that can maximize average throughput within a fixed time. proposed model, is deployed based on arbitrary spatial distribution user's required data rate, Cell-Partitioning carried out. problem, optimal cell-partition derived by solving optimization problem...

In a mobile communication system using UAV as movable base station, it is necessary to design cell partitioning appropriately according the user's bandwidth demand. this paper, we propose method that considers capacity, minimizing overall outage and maximizing throughput. Simulation results show our proposed can improve total throughput without compared conventional Voronoi partitioning.

This paper proposes a new mesh deformation scheme in 3D reconstruction which the performance deteriorates when an object of unlearned category is input model generation network. The proposed method uses loss function to generate appropriate outputs even for inputs categories models. We compare with existing so as prove validity this method. simulation results show that improves generalization ability good categories.

This paper describes an adaptive time-to-live (TTL) allocation scheme based on dynamic caching of content delivery network (CDN). is advantageous in that when a client watches real-time private broadcast, the load origin server can be efficiently reduced certain scene from past viewed again, and storage space cache used. Therefore, TTL proposed this expected to provide better service personal broadcasting viewers selectively view videos.

Recent smart devices offer technologies that can measure indoor as well outdoor locations. In the case of positioning, a global positioning system (GPS) is generally used. There limit to method using GPS signal for positioning. A typical use beacon based on bluetooth low energy (BLE). However, this has disadvantages needs be charged, additional hardware needed. This paper proposes technology optical camera communication (OCC) which overcome these existing method. Especially, acquire relative...

Multi-access edge computing has been widely considered as an important technology to support low latency services by reducing application execution latency. In this article we design a distributed computation offloading problem which is solved using multi-agent deep reinforcement learning. scenario, every UE acts agent and it tries maximise its utility in round of game. The given weighted combination number processed bits energy consumed achieving it. We designed custom scenario for...