Abstract
Vehicular wireless networks (VWNs) offer both high-priority safety and low-priority non-safety applications. In VWNs, the high-priority applications are urgent. Transmitting urgent information demands low delay and high bandwidth. When the traffic is heavy, how to reduce the multi-hop wireless delay will be critical for urgent information. In this paper, we propose a blocking strategy to preempt the transmission of low-priority vehicles and to decrease the number of contending vehicles. Thus, the multi-hop wireless delay of high-priority vehicles will be greatly reduced even if the traffic is heavy. Moreover, we also propose a mathematical model to evaluate the performance of the proposed strategy and compare the existing strategy. Performance results show that the proposed strategy can reduce the multi-hop wireless delay significantly.
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This research was supported in part by National Science Council, Taiwan under Grant NSC 101-2221-E-142 -005.
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Appendix
Table 2 lists all notations and variables used in the paper.
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Wang, KL., Wang, TP. & Tseng, CC. Reducing Multi-hop Wireless Delay for High-Priority Applications in Vehicular Wireless Networks. Wireless Pers Commun 81, 685–710 (2015). https://doi.org/10.1007/s11277-014-2152-x
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DOI: https://doi.org/10.1007/s11277-014-2152-x