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ABSTRACT

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.

REFERENCES

• 1: Meng Guo , Mostafa H. Ammar , Ellen W. Zegura, V3: A Vehicle-to-Vehicle Live Video Streaming Architecture, Proceedings of the Third IEEE International Conference on Pervasive Computing and Communications, p.171-180, March 08-12, 2005 [doi>10.1109/PERCOM.2005.53]
• 2: Shahram Ghandeharizade , Shyam Kapadia , Bhaskar Krishnamachari, PAVAN: a policy framework for content availabilty in vehicular ad-hoc networks, Proceedings of the 1st ACM international workshop on Vehicular ad hoc networks, October 01-01, 2004, Philadelphia, PA, USA [doi>10.1145/1023875.1023885]
• 3: U. Lee, et al. Dissemination and Harvesting of Urban Data Using Vehicular Sensing Platforms. IEEE Transactions on Vehicular Technology, (58)2, 2009, pp. 882--901.
• 4: Xinjuan Zhu , Bo Xu , Ouri Wolfson, Spatial queries in disconnected mobile networks, Proceedings of the 16th ACM SIGSPATIAL international conference on Advances in geographic information systems, November 05-07, 2008, Irvine, California [doi>10.1145/1463434.1463482]
• 5: http://www.cs.uic.edu/~boxu/video_clips/video_13126071744_11-21-24.asf
• 6: Y. Zhang, et al. ICEDB: Intermittently-Connected Continuous Query Processing. ICDE 2007.

INDEX TERMS

Primary Classification:
  H. Information Systems
  H.2 DATABASE MANAGEMENT
      H.2.8 Database applications

General Terms:
Algorithms, Design, Performance

Keywords:
cellular, metadata, multimedia traffic information, query processing, vehicular networks, wi-fi