Quick Spatial Data Access using Expanded Cells in Non-flat Wireless Data Broadcast over Multiple Channels
Seokjin Im, Jin-Tak Choi · Advanced science and technology letters · 2015
Wireless spatial data broadcasting supports a great number of clients effectively to access location-dependent information. We propose a spatial indexing scheme using expanded grid cells to allow the clients access their desired data items quickly by reducing the number of grid cells to be accessed. Performance evaluation through simulation study discloses the proposed indexing scheme outperforms existing schemes with respect to the access time.