ABSTRACT
The distribution of dynamic information from many sources to many destinations is a key challenge for VANET applications such as cooperative traffic information management or decentralized parking guidance systems. In order for these systems to remain scalable it has been proposed to aggregate the information within the network as it travels from the sources to the destinations. However, so far it has remained unclear by what amount the aggregation scheme needs to reduce the original data in order to be considered scalable. In this paper we prove formally that any suitable aggregation scheme must reduce the bandwidth at which information about an area at distance d is provided to the cars asymptotically faster than 1/d2. Furthermore, we constructively show that this bound is tight: for any arbitrary ε>0, there exists a scalable aggregation scheme that reduces information asymptotically like 1/d(2+ε).
- I. F. Akyildiz, W. Su, Y. Sankarasubramaniam, and E. Cayirci. Wireless sensor networks: A survey. Elsevier Computer Networks, 38(4):393--422, Mar. 2002. Google ScholarDigital Library
- S. Basagni, I. Chlamtac, V. R. Syrotiuk, and B. A. Woodward. A distance routing e ect algorithm for mobility (DREAM). In MobiCom '98: Proceedings of the 4th Annual ACM/IEEE International Conference on Mobile Computing and Networking, pages 76--84, Oct. 1998. Google ScholarDigital Library
- M. Caliskan, D. Graupner, and M. Mauve. Decentralized discovery of free parking places. In VANET '06: Proceedings of the 3rd ACM International Workshop on Vehicular Ad Hoc Networks, pages 30--39, Sept. 2006. Google ScholarDigital Library
- S. Dornbush and A. Joshi. StreetSmart Traffic: Discovering and disseminating automobile congestion using vanet's. In VTC '07-Spring: Proceedings of the 65th IEEE Vehicular Technology Conference, pages 11--15, Apr. 2007.Google ScholarCross Ref
- M. Enachescu, A. Goel, R. Govindan, and R. Motwani. Scale-free aggregation in sensor networks. Elsevier Theoretical Computer Science, 344(1):15--29, Nov. 2005. Google ScholarDigital Library
- M. Grossglauser and D. N. C. Tse. Mobility increases the capacity of ad hoc wireless networks. IEEE/ACM Transactions on Networking, 10(4):477--486, 2002. Google ScholarDigital Library
- P. Gupta and P. R. Kumar. The Capacity of Wireless Networks. IEEE Transactions on Information Theory, IT-46(2):388--404, Mar. 2000. Google ScholarDigital Library
- K. Ibrahim and M. C. Weigle. Optimizing CASCADE data aggregation for VANETs. In MoVeNet '08: Proceedings of the 2nd International Workshop on Mobile Vehicular Networks, Sept. 2008.Google ScholarCross Ref
- A. Keshavarz-Haddad, V. Ribeiro, and R. Riedi. Broadcast capacity in multihop wireless networks. In MobiCom '06: Proceedings of the 12th Annual ACM International Conference on Mobile Computing and Networking, pages 239--250, Sept. 2006. Google ScholarDigital Library
- A. Keshavarz-Haddad and R. Riedi. Bounds for the capacity of wireless multihop networks imposed by topology and demand. In MobiHoc '07: Proceedings of the 8th ACM International Symposium on Mobile Ad Hoc Networking and Computing, pages 256--265, Sept. 2007. Google ScholarDigital Library
- T. Kosch, C. Schwingenschlogl, and L. Ai. Information dissemination in multihop inter-vehicle networks. In ITSC '02: Proceedings of the 5th International IEEE Conference on Intelligent Transportation Systems, pages 685--690, Sept. 2002.Google ScholarCross Ref
- B. Krishnamachari, D. Estrin, and S. Wicker. The impact of data aggregation in wireless sensor networks. In ICDCSW '02: Proceedings of the 22nd International Conference on Distributed Computing Systems Workshops, pages 575--578, July 2002. Google ScholarDigital Library
- C. Lochert, B. Scheuermann, and M. Mauve. Probabilistic aggregation for data dissemination in VANETs. In VANET '07: Proceedings of the 4th ACM International Workshop on Vehicular Ad Hoc Networks, pages 1--8, Sept. 2007. Google ScholarDigital Library
- C. Lochert, B. Scheuermann, C. Wewetzer, A. Luebke, and M. Mauve. Data aggregation and roadside unit placement for a VANET traffic information system. In VANET '08: Proceedings of the 5th ACM International Workshop on VehiculAr Inter-NETworking, pages 58--65, Sept. 2008. Google ScholarDigital Library
- T. Nadeem, S. Dashtinezhad, C. Liao, and L. Iftode. TrafficView: traffic data dissemination using car-to-car communication. ACM SIGMOBILE Mobile Computing and Communications Review, 8(3):6--19, July 2004. Google ScholarDigital Library
- M. Nekoui, A. Eslami, and H. Pishro-Nik. Scaling laws for distance limited communications in vehicular ad hoc networks. In ICC '08: Proceedings of the IEEE International Conference on Communications, pages 2253--2257, May 2008.Google ScholarCross Ref
- A. Ozgur, O. Leveque, and D. N. C. Tse. Hierarchical cooperation achieves optimal capacity scaling in ad hoc networks. IEEE Transactions on Information Theory, 53(10):3549--3572, 2008. Google ScholarDigital Library
- H. Pishro-Nik, A. Ganz, and D. Ni. The capacity of vehicular ad hoc networks. In Allerton '07: Proceedings of the 45rd Annual Allerton Conference, pages 1156--1163, Sept. 2007.Google Scholar
- R. Rajagopalan and P. K. Varshney. Data aggregation techniques in sensor networks: A survey. IEEE Communications Surveys&Tutorials, 8(4):48--63, 2006. Google ScholarDigital Library
- M. Raya, A. Aziz, and J.-P. Hubaux. Efficient secure aggregation in VANETs. In VANET '06: Proceedings of the 3rd ACM International Workshop on Vehicular Ad Hoc Networks, pages 67--75, Sept. 2006. Google ScholarDigital Library
- S. Shakkottai, X. Liu, and R. Srikant. The multicast capacity of large multihop wireless networks. In MobiHoc '07: Proceedings of the 8th ACM International Symposium on Mobile Ad Hoc Networking and Computing, pages 247--255, Sept. 2007. Google ScholarDigital Library
- M. Transier, H. Fubler, J. Widmer, M. Mauve, and W. Effelsberg. A hierarchical approach to position-based multicast for mobile ad hoc networks. Springer Wireless Networks, 13(4):447--460, Aug. 2007. Google ScholarDigital Library
- Z. Wang, H. R. Sadjadpour, and J. J. Garcia-Luna-Aceves. A unifying perspective on the capacity of wireless ad hoc networks. In INFOCOM '08: Proceedings of the 27th Annual Joint Conference of the IEEE Computer and Communications Societies, pages 753--762, Apr. 2008.Google ScholarCross Ref
- L. Wischhof, A. Ebner, H. Rohling, M. Lott, and R. Halfmann. SOTIS - a self-organizing traffic information system. In VTC '03-Spring: Proceedings of the 57th IEEE Vehicular Technology Conference, pages 2442--2446, Apr. 2003.Google ScholarCross Ref
- L.-L. Xie and P. R. Kumar. A network information theory for wireless communication: Scaling laws and optimal operation. IEEE Transactions on Information Theory, 50(5):748--767, May 2004. Google ScholarDigital Library
- B. Yu, J. Gong, and C.-Z. Xu. Catch-up: A data aggregation scheme for VANETs. In VANET '08: Proceedings of the 5th ACM International Workshop on VehiculAr Inter-NETworking, pages 49--57, Sept. 2008. Google ScholarDigital Library
Index Terms
- A fundamental scalability criterion for data aggregation in VANETs
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