On mode selection and power control for uplink D2D communication in cellular networks

Konpal S. Ali, Hesham Elsawy, Mohamed-Slim Alouini

Research output: Chapter in Book/Report/Conference proceedingConference contribution

15 Scopus citations

Abstract

Device-to-device (D2D) communication enables users lying in close proximity to bypass the cellular base station (BS) and transmit to one another directly. This offloads traffic from the cellular network, improves spatial frequency reuse and energy efficiency in the network. We present a comprehensive and tractable analytical framework for D2D-enabled uplink cellular networks with two different flexible mode-selection schemes. The power-control cutoff thresholds of the two communication modes have been decoupled unlike past work on the subject. We find that for a given network, an optimal value exists not only for the biased mode selection criterion, but also for r, the ratio of the power-control cutoff thresholds of the two communication modes, which maximizes spatial spectral efficiency. Also, r turns out to be a more robust parameter for optimizing network performance. Further, it is shown that the second scheme, which prioritizes spatial frequency reuse over the per-user achievable performance compared to the first scheme, achieves almost the same overall network performance; thereby trading per user performance to serve a larger number of users.
Original languageEnglish (US)
Title of host publication2015 IEEE International Conference on Communication Workshop (ICCW)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages620-626
Number of pages7
ISBN (Print)9781467363051
DOIs
StatePublished - Sep 14 2015

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