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Novel D2D resource partitioning and allocation schemes for SC‐FDMA‐based public safety systems

Device‐to‐device (D2D) communication is essential for the provision of the broadcasting service for public safety (PS) terminals in out‐of‐network coverage. A sensing‐based resource‐allocation scheme is desirable, rather than a random approach, for next‐generation, PS systems, so that higher data rates and a massive connectivity can be supported. The half‐duplex and resource collisions are the main design constraints, especially for the single carrier frequency division multiplexing (SC‐FDMA)‐based D2D broadcast system. A novel resource‐allocation scheme is proposed in this paper, whereby the resource partitions are managed adaptively based on sensing results. The system‐level evaluation and analysis results show that the proposed scheme significantly improves upon the overall network performance of the conventional scheme, especially with respect to the resource‐collision rate and the throughput. Copyright © 2016 John Wiley & Sons, Ltd.