Abstract
IEEE 802.11p/1609 standards divide the radio spectrum into one control channel (CCH) and six service channels (SCH) for emergent/management frame exchange and service dissemination, respectively. Previous schemes, however, still suffer from enormous collisions of emergency messages or the large overhead of control messages in CCH, leading toward poor bandwidth usage. This paper develops group reservation MAC (GRMAC) to minimize the number of collisions in CCH to increase its overall goodput. GRMAC allows vehicles to reserve the CCH bandwidth while they stay in SCHs in order to reduce the number of collisions in CCH. Also, GRMAC migrates the CCH bandwidth scheduling mechanism from CCH to SCHs to reduce the burden on CCH bandwidth resources. The simulation results under heavy load reveal that GRMAC achieves two times the goodput achieved by the conventional IEEE 802.11p/1609 mechanism.
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References
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Chen, YH., Lai, CN., Lai, YC., Li, YC. (2015). A Group Bandwidth Reservation Scheme for the Control Channel in IEEE 802.11p/1609 Networks. In: Xu, K., Zhu, H. (eds) Wireless Algorithms, Systems, and Applications. WASA 2015. Lecture Notes in Computer Science(), vol 9204. Springer, Cham. https://doi.org/10.1007/978-3-319-21837-3_5
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DOI: https://doi.org/10.1007/978-3-319-21837-3_5
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