Towards an optimized and secure cascade for data aggregation in vanets

ABSTRACT

We present an analysis of and security extensions to the CASCADE (Cluster-based Accurate Syntactic Compression of Aggregated Data in VANETs) data aggregation technique. CASCADE organizes known vehicles into clusters, the size of which determines both the frame size used to distribute aggregated data and the distance ahead that vehicles are aware of (local view). We determine the optimal cluster size to balance the trade-off between local view length and expected frame size. The original CASCADE description does not consider security issues, so we present our framework for a secure CASCADE by employing received signal strength and laser rangefinders for position verification.

REFERENCES

• 1: Khaled Ibrahim , Michele C. Weigle, Accurate data aggregation for VANETs, Proceedings of the fourth ACM international workshop on Vehicular ad hoc networks, September 10-10, 2007, Montreal, Quebec, Canada [doi>10.1145/1287748.1287761]
• 2: -- "CASCADE: Cluster-based accurate syntactic compression of aggregated data in VANETs," in submission, available at http://www.cs.odu.edu/vanet/papers/ibrahim-cascade-submitted08.pdf, Mar. 2008.
• 3: ||, "CASCADE: Cluster-based accurate syntactic compression of aggregated data in VANETs," in submission, available at http://www.cs.odu.edu/vanet/papers/ibrahim-cascade-submitted08.pdf, Mar. 2008.
• 4: ASTM E2213-03, "Standard Specification for Telecommunications and Information Exchange Between Road-side and Vehicle Systems - 5GHz Band Dedicated Short-Range Communications (DSRC) Medium Access Control (MAC) and Physical Layer (PHY) Specifications," ASTM International, Jul. 2003.
• 5: K. Ibrahim and M. C. Weigle, "ASH: Application-aware SWANS with highway mobility," in Proceedings of IEEE INFOCOM Workshop on MObile Networking for Vehicular Environments (MOVE), Apr. 2008..
• 6: "JiST/SWANS," http://jist.ece.cornell.edu, 2004.

INDEX TERMS

Primary Classification:
  C. Computer Systems Organization
  C.2 COMPUTER-COMMUNICATION NETWORKS
      C.2.0 General
          Subjects: Security and protection (e.g., firewalls)

Additional Classification:
  E. Data
  E.4 CODING AND INFORMATION THEORY
      Subjects: Data compaction and compression

General Terms:
Algorithms, Design, Security

Keywords:
aggregation, data compaction, security, vanets