Telecommunications apparatus and methods

A method for operating a terminal device for transmitting data to a second terminal device in a wireless telecommunications system, the method comprising:

• transmitting, on a physical downlink control channel of a first carrier operating in a first frequency band, control signalling comprising an indication of at least a timing of radio resources on a second carrier operating over a second frequency band to be used for transmitting data directly from the terminal device to the second terminal device, wherein the first frequency band is a licensed frequency band in the wireless telecommunications system and the second frequency band is an unlicensed band in the wireless telecommunications system;
• and
• transmitting data directly to the second terminal device on the second carrier using the radio resources on the second carrier indicated by the control signalling.

Circuitry for a terminal device for transmitting data to a second terminal device in a wireless telecommunications systems, wherein the circuitry comprises a controller and a transceiver configured to operate together to cause the terminal device to:

• transmit, on a physical downlink control channel (PDCCH) of a first carrier operating in a first frequency band, control signalling comprising an indication of at least a timing of radio resources on a second carrier operating over a second frequency band to be used for transmitting data directly from the terminal device to the second terminal device, wherein the first frequency band is a licensed frequency band in the wireless telecommunications system and the second frequency band is an unlicensed band in the wireless telecommunications system;
• and
• transmit data directly to the second terminal device on the second carrier using the radio resources on the second carrier indicated by the control signalling.

A terminal device for receiving data from a second terminal device in a wireless telecommunications system, the terminal device comprising:

• receiving, on a physical downlink control channel (PDCCH) of a first carrier operating in a first frequency band, control signalling comprising an indication of at least a timing of radio resources on a second carrier operating over a second frequency band to be used by the second terminal device for transmitting data directly to the terminal device, wherein the first frequency band is a licensed frequency band in the wireless telecommunications system and the second frequency band is an unlicensed band in the wireless telecommunications system;
• and
• receiving data directly from the second terminal device on the second carrier using the radio resources on the second carrier indicated by the control signalling.

A method for operating a terminal device for receiving data from a second terminal device in a wireless telecommunications system, the method comprising:

• receiving, on a physical downlink control channel (PDCCH) of a first carrier operating in a first frequency band, control signalling comprising an indication of radio resources on a second carrier operating over a second frequency band to be used by the second terminal device for transmitting data directly to the terminal device, wherein the first frequency band is a licensed frequency band in the wireless telecommunications system and the second frequency band is an unlicensed band in the wireless telecommunications system;
• and
• receiving data directly from the first terminal device on the second carrier using the radio resources on the second carrier indicated by the control signalling.

Circuitry for a terminal device for receiving data from a first terminal device in a wireless telecommunications system, wherein the circuitry comprises a controller and a transceiver configured to operate together to cause the second terminal device to:

• receive, on a physical downlink control channel (PDCCH) of a first carrier operating in a first frequency band, control signalling comprising an indication of radio resources on a second carrier operating over a second frequency band to be used by the second terminal device for transmitting data directly to the terminal device, wherein the first frequency band is a licensed frequency band in the wireless telecommunications system and the second frequency band is an unlicensed band in the wireless telecommunications system;
• and
• receive data directly from the second terminal device on the second carrier using the radio resources on the second carrier indicated by the control signalling.