An Improved GPSR on Similarity Models in Vehicular Networks
|International Journal of Engineering Trends and Technology (IJETT)||
|© 2017 by IJETT Journal|
|Year of Publication : 2017|
|Authors : Vongpasith Phouthone, Zhu Xiao, Dong Wang, Vincent Havyarimanag
|DOI : 10.14445/22315381/IJETT-V46P260|
Vongpasith Phouthone, Zhu Xiao, Dong Wang, Vincent Havyarimanag "An Improved GPSR on Similarity Models in Vehicular Networks", International Journal of Engineering Trends and Technology (IJETT), V46(6),355-362 April 2017. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group
Due to the highly dynamic network topology of vehicular ad hoc networks (VANETs), using the simple greedy forwarding based only on the position information to select the closest nexthop which may not move toward to the destination vehicle. Thus, the greedy-perimeter stateless routing (GPSR) routing protocol may miss out on some suitable next-hop vehicles to forward a data packet. In this paper, we propose a next-hop selection algorithm for improvement of the GPSR routing. The concept of cosine similarity and speed similarity is adopted, which take into account the the velocity vector and speed information of vehicles into consideration. The vehicle with largest similarity value is chosen as the suitable next-hop to forward a data packet. The performance of the proposed algorithm by simulation demonstrates significant increases of packet delivery ratio and reductions of average end-to-end delay compared to the traditional GPSR routing protocol.
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GPSR, Next-hop selection, Similarity, VANETs.