URA-MAC a new strategy for D2D communications

摘要

This paper presents a new resource allocation protocol for D2D communications within LTE-based networks. The proposed scheme is a cluster based approach: the base station is implied only during the connection phase to assign initial resource allocation values to D2D users. Thereby, the base station is less solicited, and D2D communications can be scheduled by nodes themselves, following channel access rules provided by the base station. The main advantages of the protocol are a high spectral reuse level and the increase of the cell overall throughput without significant QoS degradation for regular services. Moreover, the low signalling level at the base station makes the protocol suitable to be applied to out of coverage network extension, each D2D device being eligible to play the role of the base station.