กลไกการกระจายข้อมูลบนพื้นฐานระบบคลาวด์ สำหรับเครือข่ายยานพาหนะ

Abstract

This thesis presents the mechanisms of vehicular network dissemination which divided into three parts. The first part is the method of safety data dissemination. The secondary is the method of infotainment dissemination and the last part is a web service for data dissemination. In the first part, we design the safety data dissemination mechanism for vehicular networks, called Stored-Carry Broadcast Cloud-based (SCBC). The SCBC is developed from SCB technique to increase the channel of data dissemination via RSU Cloud for data delivery delay. The results are presented that the proposed technique improves the delivery delay better than SCB. In the second part, we design the infotainment data dissemination mechanism for vehicular networks. The message structures and the architecture are created to support data dissemination via RSU cloud which has the data center to be the caching storage of the large data from the source vehicle during the packet delivery processing to the destination vehicle. The results are revealed that the proposed model is better than the traditional model in term of throughput and delivery delay when increasing the traffic load and the receiver in the system. In the third part, we design and develop the web service based on Software as a Service (SaaS) of cloud computing, called Vehicular Data Dissemination as a Service (VDDaaS). The service solves the issue of the second part in cases of the traffic load and the computing performance limited of the RSU cloud. The VDDaaS supports both safety and infotainment data, and provides four services including of subscribing, requesting of sending/receiving data, updating status, and getting information list. The results are shown the comparison between traditional RSU and the RSU that connected with VDDaaS, the RSU with VDDaaS is better than the traditional RSU.