Network Coding-Based Interference Management Scheme in D2D Communications

摘要

In this paper, we propose an interference management scheme for device-to-device (D2D) communications in cellular networks. Considering the underlay D2D communications, the signal quality of cellular users would be affected by D2D us-ers. To solve this problem, we explore the application of net-work coding and relay-assistance to mitigate interference. In the proposed scheme, helper nodes overhear the signal from cellular users, encode the received packets, and send the en-coded packets to the base station. We design the helper node selection scheme and the transmission policy of helper nodes. The performance of the proposed scheme for different posi-tions of the cellular user and D2D users is then evaluated. The results suggest that the cellular transmission scheme should be adjusted dynamically when underlay D2D communi-cations are active. Compared with the existing solutions, the proposed scheme can effectively increase system throughput.