Energy-Efficient Device Discovery in D2D Cellular Networks for Public Safety Scenario

Zeeshan Kaleem , Nadia N. Qadri, Trung Q. Duong, George K. Karagiannidis

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)


Energy-efficient device discovery is vital in public-safety systems. We investigate the problem of maximizing the number of discovered users under the major constraint of overlay interference, which occurs in device-to-device (D2D) communications, from users simultaneously accessing the resources. To solve this problem, we propose a D2D discovery maximization (D2D-DM) iterative algorithm, which provides the capability to switch the discovery mode from half-duplex to in-band full-duplex, when signal-to-interference-noise ratio falls below a predefined threshold. Moreover, the open-loop power control scheme is adopted for power-limited users. Simulation results demonstrate that the proposed D2D-DM scheme significantly enhances the number of discovered users as compared to conventional static resource allocation and the random backoff schemes.
Original languageEnglish
JournalIEEE Systems Journal
Early online date06 Mar 2019
Publication statusEarly online date - 06 Mar 2019


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