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SADV: Static-Node-Assisted Adaptive Data Dissemination in Vehicular Networks

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2 Author(s)
Yong Ding ; Dept. of Comput. Sci. & Eng., Michigan State Univ., East Lansing, MI, USA ; Li Xiao

Vehicular networks have recently attracted great interest in the research community, and multihop data dissemination has become an important issue. To improve data-delivery performance, we propose deploying static nodes at road intersections to help relay data. In this paper, we present SADV, which is a static-node assisted adaptive data-dissemination protocol for vehicular networks. With the assistance of static nodes at intersections, a packet is forwarded to the static node when there are no vehicles available to deliver the packets along the optimal path. The static node is able to store the packet and transmit it when the optimal delivery path becomes available. In addition, we let adjacent static nodes measure the delay of forwarding data between each other in real time so that the routing decision that is made at static nodes can adapt to the changing vehicle densities. Moreover, a multipath routing mechanism is also adopted in SADV, which is effective in reducing the data-delivery delay. Our simulation results show that SADV outperforms other multihop data dissemination protocols, particularly under median or low vehicle density where the network is frequently partitioned. In this paper, we also present some heuristic deployment strategies to maximize SADV performance under partial deployment of static nodes and analyze them by simulations.

Published in:

Vehicular Technology, IEEE Transactions on  (Volume:59 ,  Issue: 5 )

Date of Publication:

Jun 2010

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