| 摘要 |
According to the present invention, a wireless terminal device (113) is configured to perform D2D communication with at least one wireless terminal (121-124) that belongs to a second group (group 2)when predetermined conditions are satisfied, wherein the conditions comprise a first wireless terminal (110) that belongs to a first group (group 1), which is the same group to which the wireless terminal device (113) belongs, providing implicit or explicit permission to the second group (group 2) for device-to-device (D2D) communication between the first group (group 1) and the second group (group 2). This configuration contributes, for example, to improved security for D2D communication performed between D2D communication groups. |
