Construction of next generation mobile video on demand delivery system using broadcast and communication integration environments

GCCE2015 : IEEE 4th Global Conference on Consumer Electronics , Oct 27-30, 2015 , Osaka, JapanWatching high quality videos anytime, anywhere is expected because mobile devices become popular. However, if mobile devices try to watch a video at the same time via a wireless network, the concentrated loads to delivery server cause a delay and a stop of playing videos on client devices. Therefore, in this paper, we realize a mobile video on demand delivery system that mobile devices can watch high quality videos continuously by integrated methods of broadcast and communication. We delvelop the prototype system and have practical experiments to evaluate the proposed system

A Node Replication Method to Guarantee Reachability for P2P Sensor Data Stream Delivery System on Heterogeneous Churn Situations

COMPSAC2015 : The 39th Annual International Computers, Software & Applications Conference , Jul 1-5, 2015 , Taichung, TaiwanIn this paper, we propose a method to construct scalable sensor data stream delivery system that guarantees the specified QoS of the delivery, i.e. Total reachbility to destinations even in a heterogeneous churn situation of the delivery server resources (nodes). There were some P2P-based methods to construct scalable and efficient sensor data stream system that accommodates different delivery cycles by distributing communication loads of the nodes. However, existing methods could not guarantee the QoS of the delivery when the nodes on the system has heterogeneous churn rate. Our method extends existing method, which assigns the relay nodes based on the distributed hashing of the time-to-deliver, to decide the number of replication nodes according to the churn rate of each node and delivery paths. By simulations, we confirmed that our proposed method can guarantee the required reach ability avoiding to increase unnecessary resource assignment costs

A P2P Sensor Data Stream Delivery System to Accommodate Heterogeneous Cycles Using Skip Graphs

3PGCIC2015 : 10th International Conference on P2P, Parallel, Grid, Cloud and Internet Computing , Nov 4-6, 2015 , Krakow, PolandIn this paper, we propose a method using skip graphs to delivery sensor data streams with heterogeneous delivery cycles. Currently skip graphs have been proposed as one of structured overlay networks that construct links among nodes based on a specific rule. The proposed method sorts nodes by their delivery cycles and constructs delivery paths based on skip graphs. We confirmed in simulation that our proposed method can delivery sensor data with heterogeneous cycles using skip graphs to distribute the load of source node

Proposal of a Logical Sensor Architecture using WoT-Based Edge Microservices

K. Miyagoshi, Y. Teranishi, T. Kawakami, T. Yoshihisa and S. Shimojo, "Proposal of a Logical Sensor Architecture using WoT-Based Edge Microservices," 2020 IEEE 44th Annual Computers, Software, and Applications Conference (COMPSAC), Madrid, Spain, 2020, pp. 1223-1228, doi: 10.1109/COMPSAC48688.2020.00-89.2020 IEEE 44th Annual Computers, Software, and Applications Conference (COMPSAC) [13-17 July 2020, Madrid, Spain