Abstract
Device-to-device (D2D) services are gaining popularity in public safety (PS) applications. The existing half-duplex (HD) D2D discovery has the constraint that the devices sending beacon cannot be discovered at the same time, resulting in large time delays. To counter this problem, in-band full duplex (IB-FD) communications can be used to discover the user quickly by enabling simultaneous transmission and reception during same time-frequency block. In this paper, we exploit the benefits of IB-FD system where PS users are given priority in resource allocation. Moreover, to efficiently utilize the spectrum, we propose a time-efficient device discovery resource allocation (TE-DDRA) scheme where a user can switch the transmission mode from HD to IB-FD when the demand exceeds the available resources in HD mode. The simulation results prove that in comparison with random mode, the PS priority mode saves around \(37\%\) discovery time.
This work was supported by the Newton Prize 2017 and a Research Environment Links grant, ID 339568416, under the Newton Programme Vietnam partnership. The grant is funded by the UK Department of Business, Energy and Industrial Strategy (BEIS) and delivered by the British Council. For further information, please visit www.newtonfund.ac.uk./.
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© 2019 ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering
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Kaleem, Z., Yousaf, M., Hassan, S.A., Vo, NS., Duong, T.Q. (2019). Priority-Based Device Discovery in Public Safety D2D Networks with Full Duplexing. In: Duong, T., Vo, NS., Phan, V. (eds) Quality, Reliability, Security and Robustness in Heterogeneous Systems. Qshine 2018. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 272. Springer, Cham. https://doi.org/10.1007/978-3-030-14413-5_8
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DOI: https://doi.org/10.1007/978-3-030-14413-5_8
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