An Optimized Algorithm for Resource Allocation for D2D in Heterogeneous Networks

With the emergence of 5G mobile multimedia services, end users’ demand for high-speed, low-latency communication network access is increasing. Among them, device-to-device (D2D) one considerable technology. In D2D communication, data does not need to be relayed and forwarded by base station, but under control a direct local link allowed between two adjacent devices. This flexible mode reduces processing bottlenecks coverage blind spots can widely used in dense user scenarios such as heterogeneous ultra-dense wireless networks. One important factors which affects quality-of-service (QoS) communications co-channel interference. order solve this problem interference, paper proposes graph coloring based algorithm. The main idea utilize weighted priority spectrum resources enables multiple users reuse single cellular resource. proposed algorithm also provides simpler power control. pattern interference determined using different types interferences UE color acquired. Simulation results show that effectively reduced consumption improved system throughput compared with existing algorithms.