US Patent No. 10,117,252

USER EQUIPMENT, COMMUNICATION SYSTEM, AND METHOD OF CONTROLLING A USER EQUIPMENT


Patent No. 10,117,252
Issue Date October 30, 2018
Title User Equipment, Communication System, And Method Of Controlling A User Equipment
Inventorship Na Wei, Beijing (CN)
Assignee SONY MOBILE COMMUNICATIONS INC., Tokyo (JP)

Claim of US Patent No. 10,117,252

1. A user equipment that is part of a device-to-device group that includes electronic devices that communicate using device-to-device communication and the user equipment communicates with a cellular communication network in which there are preconfigured device-to-device spectrum resources that the electronic devices of the device-to-device group are permitted to use inside a coverage area of the cellular communication network, comprising:a wireless interface over which the communication with the cellular communication network is carried out and over which communication with the other electronic devices in the device-to-device group is carried out; and
a processing device to control the wireless interface and configured to:
determine existence of a first condition in which one or more of the electronic devices of the device-to-device group are in the coverage area of the cellular communication network and, during times that the first condition exists, perform device-to-device discovery or device-to-device communication using the preconfigured device-to-device spectrum resources; and
determine existence of a second condition in which at least one of the electronic devices in the device-to-device group is outside the coverage area of the cellular communication network and in which at least one of the electronic devices in the device-to-device group is inside the coverage area and, during times that the second condition exists, perform device-to-device discovery or device-to-device communication using extension device-to-device spectrum resources.