The present disclosure relates to an electronic device in a wireless communication system and a wireless communication method. The electronic device comprises: one or more processing circuits, wherein the processing circuits are configured to execute the following operations: acquiring an on/off state of a small cell base station in a pre-determined geographical area; and on the basis of the acquired on/off state of the small cell base station, generating reconfiguration information about a positioning reference signal (PRS) used for the small cell base station in the pre-determined geographical area, so as to position user equipment in the pre-determined geographical area. By using the electronic device and the wireless communication method in the present disclosure, an existing PRS signal can be reconfigured, so as to improve the positioning accuracy, and achieve the purpose of accelerating the positioning process.