Telecommunications apparatus and methods

Network infrastructure equipment for use in a wireless telecommunications system for communicating with a terminal device on a primary cell supporting a primary component carrier on radio resources within a first frequency band and a secondary cell supporting a secondary component carrier on radio resources within a second frequency band, wherein the network infrastructure equipment comprises a controller and a transceiver configured to operate together to:

• transmit to the terminal device an allocation message indicating an allocation of transmission resources to be used for communicating data to the terminal device on the secondary component carrier;
• transmit to the terminal device in association with the allocation message an indication of a selected one of a plurality of configuration settings for the secondary component carrier to be used for communicating the data in at least one of a same time block as the allocation message with which it is associated and a time block that is before a time block containing the allocation message with which it is associated;
• and
• transmit the data to the terminal device using the allocated resources on the secondary component carrier operating in accordance with the selected one of the plurality of configuration settings.

Circuitry for network infrastructure equipment for use in a wireless telecommunications system for communicating with a terminal device on a primary cell supporting a primary component carrier on radio resources within a first frequency band and a secondary cell supporting a secondary component carrier on radio resources within a second frequency band, wherein the circuitry comprises:

• controller circuitry and transceiver circuitry configured to operate together to:
• transmit to the terminal device an allocation message indicating an allocation of transmission resources to be used by for communicating data to the terminal device on the secondary component carrier;
• transmit to the terminal device in association with the allocation message an indication of a selected one of a plurality of configuration settings for the secondary component carrier to be used for communicating the data in at least one of a same time block as the allocation message with which it is associated and a time block that is before a time block containing the allocation message with which it is associated;
• and
• transmit the data to the terminal device using the allocated resources on the secondary component carrier operating in accordance with the selected one of the plurality of configuration settings.