The Design of Vehicular Communications Systems for Dynamic Data Dissemination and Collection (Ii), (Iii)

The two-year continuous proposal, “the design of vehicular communications systems for dynamic data dissemination and collection,” is going to engage with the research of the first year subproject of the integrated project. In our plan, we will design an information dissemination and integration system by using more efficient and more immediate way. The achievement not only reaches the maximal flooding rate by using the minimal packet transmit times but also determines the necessity of rebroadcast according to the freshness of packets. In this proposal, we try to determine a rebroadcast probability Pr whether a car has to rebroadcast the information which it received. The value of Pr is calculated by several variables, such as the information broadcasting frequency, the velocity of vehicular, the car density, the moving direction, the directional difference degree with the information source, the issue time, and its current location. After the precise and intelligent calculation, we can have a better information dissemination manner in the VANET, and further enhance the performance and efficiency of data dissemination of the VANET. The procedures of the following two years include 1) the first year, we aim to investigate the impact of several specific parameters of rebroadcast probability to the system performance and validate the experimental outcome by simulation tool, and 2) the second year, we will discuss the effectiveness of optimizing the parameter values on the probability Pr to the proposed information dissemination system. Finally, we will optimize the parameters we used in the probability Pr and PT based on the integration of three subprojects and tune the performance to meet the goal of our integrated project.

Project ID:PB10108-2797
External Project ID:NSC101-2221-E182-032