Cache Invalidation and Replacement Strategies for Location-Dependent Data in Mobile Environments
IEEE Transactions on Computers
Real-time taxi dispatching using Global Positioning Systems
Communications of the ACM - Wireless networking security
A study on the feasibility of mobile gateways for vehicular ad-hoc networks
Proceedings of the 1st ACM international workshop on Vehicular ad hoc networks
Mobility-Aware Cache Replacement for Users of Location-Dependent Services
LCN '04 Proceedings of the 29th Annual IEEE International Conference on Local Computer Networks
On semantic caching and query scheduling for mobile nearest-neighbor search
Wireless Networks - Special issue: Pervasive computing and communications
Catch-up: a data aggregation scheme for vanets
Proceedings of the fifth ACM international workshop on VehiculAr Inter-NETworking
A Telematics Service System Based on the Linux Cluster
ICCS '07 Proceedings of the 7th international conference on Computational Science, Part IV: ICCS 2007
A Message Scheduling Scheme in Hybrid Telematics Networks
ICCSA '08 Proceeding sof the international conference on Computational Science and Its Applications, Part I
Performance measurement of the hybrid prefetch scheme on vehicular telematics networks
ICCSA'10 Proceedings of the 2010 international conference on Computational Science and Its Applications - Volume Part III
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This paper proposes and measures the performance of a cache management scheme for vehicular telematics network so as to provide an advanced route recommendation service, concentrating on gateways which relay information between a specific server and vehicles. As an enhanced version of pure FAR (Furthest Away Replacement), the proposed scheme 1) replaces Euclidean distance by network distance in estimating the distance to a data item, 2) binds each cache item to a link in the target road network, 3) introduces a directional weight to consider the directional tendency of current traffic flow, and finally 4) schedules the cache requests according to their angular locations to efficiently deal with the multiple pending requests. Simulation results, conducted using the real-life trajectory data obtained from a tracking system currently in operation, show that the proposed scheme can improve the cache hit ratio by up to 9.2 %, compared with FAR as well as that the proposed angle-based scheduling scheme can further improve the cache hit ratio by up to 2.3 %.