Performance Characterization of Virtual Accumulation and Reaccumulation by Information Floating

Abstract

Information Floating (IF) is a method of delivering information to mobile nodes in target areas preventing unnecessary transmissions by permitting mobile nodes to transmit data via wireless direct links only in Transmittable Areas (TAs). IF can virtually accumulate data by making mobile nodes transmit multiple different data in the same TAs. In addition, the cooperation of multiple TAs reaccumulates temporarily lost data. In this paper, we first consider reaccumulation with the cooperation of two TAs while assuming that these TAs are points on a road. We classify the system states into two kinds based on how well the reaccumulation works using simulation results and estimate the node density representing the boundary between these two states using approximate theoretical analysis. The numerical and simulation results show that we can estimate node density to realize sufficient reaccumulation. We then show how to extend the TAs based on the above results to achieve sufficient reaccumulation and show that the proposed method is effective.