Neighbor device-assisted beacon collision detection scheme for D2D discovery

Device-to-Device (D2D) communications allow devices to communicate directly without going through infrastructure. It is considered a promising solution to improve communication performance and network capacity of LTE-Advanced (LTE-A) system. However, in D2D networks, the co-existence of multiple D2D User Equipments (UEs) is a challenging issue due to the proximity interference caused by collisions, especially, without a central controller. In this paper, we propose a distributed collision detection scheme, which can enhance the discovery performance. Simulation results show that our proposed scheme can significantly improve the number of detected devices by mitigating interference.