Abstract
Although extensive studies have been carried out on the provision of multicast services in wireless local area networks (WLANs), most of them do not consider the use of directional antennas. In particular, rate adaptation and fairness issues among sectors in directional multicast are not well-studied topics. In this paper, a fair rate adaptation scheme (FRAS) that seeks to determine appropriate transmission rates that maintain fairness among sectors and accommodate as many multicast devices as possible is proposed. Extensive simulation results show that FRAS outperforms the equal-rate scheme in terms of the number of devices that receive multicast frames. Furthermore, FRAS can improve the fairness performance as compared with the heavy-sector first scheme.





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Notes
The delay constraint for multicast can be set by considering the frame arrival and service rates at the AP. For stable multicast services, the AP should not be saturated (i.e., the utilization at the AP should be less than 1.0). Therefore, when the frame arrival and service rates are given, the appropriate delay constraint can be derived. More details on the multicast frames method of setting the delay constraint can be found in [16]. The effect of different delay constraints will be investigated in Sect. 5.3.
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Acknowledgments
This research was supported in part by the MSIP (Ministry of Science, ICT&Future Planning), Korea, under the ITRC (Information Technology Research Center) support program supervised by the NIPA (National IT Industry Promotion Agency (NIPA-2013-H0301-13-1002) and in part by Business for Cooperative R&D between Industry, Academy, and Research Institute funded Korea Small and Medium Business Administration in 2013 (Grants No. C0002920).
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An extended abstract of this paper was presented at IEEE ICCE 2012 [1]
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Kim, W., Song, T. & Pack, S. FRAS: Fair Rate Adaptation Scheme for Directional Multicast in 60 GHz Multi-Gigabit WLANs. Wireless Pers Commun 77, 1007–1017 (2014). https://doi.org/10.1007/s11277-013-1551-8
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DOI: https://doi.org/10.1007/s11277-013-1551-8