Multimedia traffic information in vehicular networks

In this paper we consider a novel multimedia application, in which drivers may query multimedia clips captured by smartphones mounted on other vehicles. These multimedia clips visualize and voice-indicate the real-time traffic conditions on road segments ahead. We designed a systematic and exhaustive set of query processing strategies which differ from each other in terms of push versus pull, whether infrastructure communication is utilized, and whether metadata dissemination is separated from multimedia clip dissemination. We analyze these strategies theoretically and by simulations, and identify the one that is superior to the others. Categories and Subject Descriptors H.2.8 [Database Applications]: Spatial databases and GIS General Terms Algorithms, performance, design. Keywords Multimedia traffic information, vehicular networks, metadata, query processing, Wi-Fi, cellular.

• Type: Conference
• Year: 2009
• Where: GIS
• Authors: Ouri Wolfson, Bo Xu, Hyung Ju Cho
• Keywords: GIS 2009, Multimedia Clip, Multimedia Clip Dissemination, Query Processing