Patent ID: 10631221

Abstract:
Provided is a technology relating to a terminal device, a base station apparatus, a communication system, a communication method, and an integrated circuit, in all of which it is possible that a communication procedure relating to device-to-device communication is efficiently performed. A terminal device that is capable of direct communication with a different terminal device makes a determination of whether or not transmission and reception of data relating to the direct communication at a frequency in a serving cell are not possible and transmission and reception of data relating to the direct communication at a frequency in a neighboring cell are possible, based on capability information relating to a combination of frequency bands that are supported by the terminal device, the frequency in the serving cell, and the frequency in the neighboring cell, and starts evaluation for selecting the neighboring cell, at a frequency in the neighboring cell in which the transmission and reception of the data relating to the direct communication are possible, in a case where the terminal device is interested in the direct communication.