Method for finding adjacent user under embedded D2D circumstances in cellular network

The invention discloses a method for finding an adjacent user under the embedded D2D circumstances in a cellular network. Based on an existing cellular network, the method for finding the adjacent user under the embedded D2D circumstances in the cellular network utilizes a base station as centre control and achieves efficient interference-free detection of the adjacent user. Due to the fact that the base station is introduced and used as the center control to join in the detection of the adjacent user, distribution of detection time-frequency resource blocks is optimized, the possibility of collision of detection signals is reduced, the possibility of network congestion is reduced, the detection time is shortened, and energy consumption of the detection is reduced. The base station gives full play to the coordination function, and takes an active part in detection of the adjacent user, so that a silent user is made to more easily obtain synchronous information in the process of the detection of the adjacent user, and the safety of the whole process is guaranteed. Due to the fact that the base station is used for storing distribution information of detection resources, the user only needs to conduct simple spectrum detection, to find occupied time-frequency resource block information and to upload the occupied time-frequency resource block information to the base station.