# US 2018/0324649 A1 · Carrier aggregation across different radio access technologies > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0324649 A1 - Document ID: US20180324649A1 - Status: Published application - Kind: A1 - Application number: 16/035,495 - Filed: 2018-07-13 - Published: 2018-11-08 - Earliest claimed: 2015-03-14 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Tingfang Ji; John Edward Smee; Naga Bhushan - Web page: https://patentgrep.com/patent/US20180324649A1 ## CPC - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04L 1/1829: Arrangements specially adapted for the receiver end - H04L 1/1867: Arrangements specially adapted for the transmitter end - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 36/00222: {between different packet switched [PS] network technologies, e.g. transferring data sessions between LTE and WLAN or LTE and 5G} - H04W 72/1215: {for collaboration of different radio technologies} - H04W 76/16: Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer - H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals - H04W 88/10: adapted for operation in multiple networks, e.g. multi-mode access points - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Systems, methods, apparatuses, and computer-program products for performing carrier aggregation across different radio access technologies are disclosed. For example, in some instances a method of wireless communication includes transmitting, using a first wireless communication device, control information to a second wireless communication device via a first radio access technology (RAT), the control information including control information for a second RAT; and receiving, at the first wireless communication device, an acknowledgement (ACK) or negative acknowledgement (NACK) from the second wireless communication device via the first RAT, the ACK or NACK being related to communications of the second wireless communication device conducted via the second RAT. ## Claims ### Claim 1 A method of wireless communication, comprising: transmitting, by a first wireless communication device, control information to 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 being related to the first data transmitted 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 being related to the second data transmitted via the second RAT during the first TTI. ### Claim 2 (depends on 1) The method of claim 1, further comprising: receiving, using the first wireless communication device, the second data from the second wireless communication device via the second RAT if the second NACK is transmitted to the second wireless communication device via the first RAT. ### Claim 3 (depends on 1) The method of claim 1, wherein the first RAT includes a long term evolution (LTE) RAT. ### Claim 4 (depends on 3) The method of claim 3, wherein: the control information is transmitted to the second wireless communication device via the LTE RAT during the first TTI; and the second ACK or the NACK is transmitted to the second wireless communication device during the second TTI according to the timing structure of the first RAT. ### Claim 5 (depends on 1) The method of claim 1, wherein the first wireless communication device is a base station and the second wireless communication device is a user equipment and the communications of the user equipment conducted via the second RAT include receiving uplink data from the user equipment. ### Claim 6 (depends on 1) The method of claim 1, wherein the first wireless communication device includes an antenna associated with the second RAT. ### Claim 7 (depends on 1) The method of claim 1, wherein the first wireless communication device is in communication with an antenna associated with the second RAT positioned remote from the first wireless communication device. ### Claim 8 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. ### Claim 9 (depends on 8) The method of claim 8, further comprising: receiving, by the first wireless communication device, the second data from the second wireless communication device via the second RAT if the second NACK is transmitted to the second wireless communication device via the first RAT. ### Claim 10 (depends on 8) The method of claim 8, wherein: the first RAT includes a long term evolution (LTE) RAT, the control information is received by the first wireless communication device via the LTE RAT during the first TTI, and the second data is received from the second wireless communication device via the second RAT during the first TTI according to the timing structure of the first RAT. ### Claim 11 (depends on 8) The method of claim 8, wherein the first wireless communication device is a user equipment and the second wireless communication device is a base station, and wherein the receiving the second data via the second RAT includes receiving downlink data from the base station. ### Claim 12 (depends on 8) The method of claim 8, wherein the receiving the second data from the second wireless communication device via the second RAT includes receiving the second data from an antenna of the second wireless communication device associated with the second RAT. ### Claim 13 (depends on 8) The method of claim 8, wherein the receiving the second data from the second wireless communication device via the second RAT includes receiving the second data from an antenna associated with the second RAT positioned remote from the second wireless communication device. ### Claim 14 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. ### Claim 15 (depends on 14) The device of claim 14, wherein the at least one receiver is further configured to receive the second data from the second wireless communication device via the second RAT if the transmitter transmits the second NACK from the second wireless communication device via the first RAT. ### Claim 16 (depends on 14) The device of claim 14, wherein: the first RAT includes a long term evolution (LTE) RAT, the transmitter is configured to transmit the control information to the second wireless communication device via the LTE RAT during the first TTI, and the transmitter is configured to transmit the second ACK or the NACK to the second wireless communication device during the second TTI according to the timing structure of the first RAT. ### Claim 17 (depends on 14) The device of claim 14, wherein the wireless communication device is a base station and the second wireless communication device is a user equipment. ### Claim 18 (depends on 14) The device of claim 14, further comprising an antenna associated with the second RAT. ### Claim 19 (depends on 14) The device of claim 14, wherein the multi-RAT module is in communication with an antenna associated with the second RAT positioned remote from the wireless communication device. ### Claim 20 (depends on 14) The device of claim 14, wherein the at least one receiver includes: a first receiver configured to receive the first data from the second wireless communication device via the first RAT during the first TTI of the first RAT; and a second receiver configured to receive the second data from the second wireless communication device via the second RAT during the first TTI. ### Claim 21 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. ### Claim 22 (depends on 21) The device of claim 21, wherein the at least one receiver is further configured to receive the second data from the second wireless communication device via the second RAT if the second NACK is transmitted to the second wireless communication device via the first RAT. ### Claim 23 (depends on 21) The device of claim 21, wherein the wireless communication device is a user equipment and the second wireless communication device is a base station. ### Claim 24 (depends on 21) The device of claim 21, wherein: the first RAT includes a long term evolution (LTE) RAT, the receiver is configured to: receive the control information via the LTE RAT during the first TTI, and receive the second data from the second wireless communication device via the second RAT during the first TTI according to the timing structure of the first RAT. ### Claim 25 (depends on 21) The device of claim 21, wherein the at least one receiver is configured to receive the second data from an antenna of the second wireless communication device associated with the second RAT. ### Claim 26 (depends on 21) The device of claim 21, wherein the at least one receiver is configured to receive the second data from an antenna associated with the second RAT positioned remote from the second wireless communication device. ### Claim 27 (depends on 21) The device of claim 21, wherein the at least one receiver includes: a first receiver configured to receive the first data from the second wireless communication device via the first RAT during the first TTI of the first RAT; and a second receiver configured to receive the second data from the second wireless communication device via the second RAT during the first TTI.