Carrier aggregation across different radio access technologies

A method of wireless communication, comprising:

• receiving, by a first wireless communication device, control information from a second wireless communication device via a first radio access technology (RAT), the control information including control information for the first RAT and a second RAT, a timing structure of the second RAT being aligned to a timing structure of the first RAT;
• receiving, by the first wireless communication device, first data from the second wireless communication device via the first RAT during a first transmission time interval (TTI) of the first RAT;
• receiving, by the first wireless communication device, second data from the second wireless communication device via the second RAT during the first TTI;
• transmitting, by the first wireless communication device, a first acknowledgement (ACK) or negative acknowledgement (NACK) to the second wireless communication device via the first RAT during a second TTI of the first RAT, the first ACK or NACK indicating whether the first data was received by the second wireless communication device via the first RAT during the first TTI;
• and
• transmitting, by the first wireless communication device, a second ACK or NACK to the second wireless communication device via the first RAT during the second TTI of the first RAT, the second ACK or NACK indicating whether the second data was received by the second wireless communication device via the second RAT during the first TTI.

A wireless communication device, comprising:

• a multiple radio access technology (multi-RAT) module configured to generate control information;
• a transmitter in communication with the multi-RAT module and configured to:
• transmit the generated control information to a second wireless communication device via a first radio access technology (RAT), the transmitted control information including control information for the first RAT and a second RAT, a timing structure of the second RAT being aligned to a timing structure of the first RAT;
• and
• at least one receiver in communication with the multi-RAT module and configured to:
• receive first data from the second wireless communication device via the first RAT during a first transmission time interval (TTI) of the first RAT;
• and
• receive second data from the second wireless communication device via the second RAT during the first TTI,
• wherein the transmitter is further configured to:
• transmit a first acknowledgement (ACK) or negative acknowledgement (NACK) to the second wireless communication device via the first RAT during a second TTI of the first RAT, the first ACK or NACK being related to the first data transmitted via the first RAT during the first TTI;
• and
• transmit a second ACK or NACK to the second wireless communication device via the first RAT during the second TTI of the first RAT, the second ACK or NACK being related to the second data transmitted via the second RAT during the first TTI.

A wireless communication device, comprising:

• at least one receiver configured to:
• receive control information from a second wireless communication device via a first radio access technology (RAT), the control information including control information for the first RAT and a second RAT, a timing structure of the second RAT being aligned to a timing structure of the first RAT;
• receive first data from the second wireless communication device via the first RAT during a first transmission time interval (TTI) of the first RAT;
• and
• receive second data from the second wireless communication device via the second RAT during the first TTI;
• and
• a transmitter configured to:
• transmit a first acknowledgement (ACK) or negative acknowledgement (NACK) to the second wireless communication device via the first RAT during a second TTI of the first RAT, the first ACK or NACK indicating whether the first data was received by the second wireless communication device via the first RAT during the first TTI;
• and
• transmit a second ACK or NACK to the second wireless communication device via the first RAT during the second TTI of the first RAT, the second ACK or NACK indicating whether the second data was received by the second wireless communication device via the second RAT during the first TTI.