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Proximity based applications are becoming fast growing markets suggestingthat Device-to-Device (D2D) communications is becoming an essential part offuture mobile data networks. We propose scalable admission and power controlmethods for D2D communications underlay cellular networks to increase the reuseof frequency resources and thus network capacity while maintaining QoS to allusers. The aim of the proposed methods is to maximize the number of D2D linksunder QoS constraints, therefore maximizing network frequency reuse, whileconsidering different levels of complexity and available channel stateinformation (CSI) in a multi-cell environment. Numerical results show that byusing D2D and the proposed multi-cell interference coordination and low powertransmission method, the network spectral efficiency can be increased by asmuch as ten times, while low outage probability can be assured to provided QoSfor all users.

Scalable Device-to-Device Communications For Frequency Reuse >> 1