Fast enhanced component carrier activation

An apparatus for wireless communication, comprising:

• means for receiving signaling indicative of a carrier aggregation (CA) configuration comprising a first component carrier (CC) and a second CC, wherein the first CC comprises a primary carrier utilizing a licensed frequency bandwidth and the second CC comprises a secondary carrier utilizing an unlicensed frequency bandwidth;
• means for receiving a control signal on the licensed frequency bandwidth of the first CC that indicates a channel availability on the unlicensed frequency bandwidth of the second CC;
• means for receiving a physical downlink control channel (PDCCH) message on the first CC, wherein the PDCCH message schedules resources of the second CC, wherein a duration of transmission time intervals (TTIs) in the second CC is shorter than a duration of TTIs in the first CC of the first CC, and wherein the PDCCH message is transmitted in a first TTI of the first CC and assigns a TTI of the second CC that at least partially overlaps in time with a subsequent TTI of the first CC, the subsequent TTI of the first CC being subsequent to the first TTI of the first CC;
• and
• means for monitoring the second CC in response to the received control signal.

An apparatus for wireless communication, comprising:

• a processor;
• memory in electronic communication with the processor;
• and
• instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
• receive signaling indicative of a carrier aggregation (CA) configuration comprising a first component carrier (CC) and a second CC, wherein the first CC comprises a primary carrier utilizing a licensed frequency bandwidth and the second CC comprises a secondary carrier utilizing an unlicensed frequency bandwidth;
• receive a control signal on the licensed frequency bandwidth of the first CC that indicates a channel availability on the unlicensed frequency bandwidth of the second CC;
• receive a physical downlink control channel (PDCCH) message on the first CC, wherein the PDCCH message schedules resources of the second CC, wherein a duration of transmission time intervals (TTIs) in the second CC is shorter than a duration of TTIs in the first CC of the first CC, and wherein the PDCCH message is transmitted in a first TTI of the first CC and assigns a TTI of the second CC that at least partially overlaps in time with a subsequent TTI of the first CC, the subsequent TTI of the first CC being subsequent to the first TTI of the first CC;
• and
• monitor the second CC in response to the received control signal.

A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to:

• receive signaling indicative of a carrier aggregation (CA) configuration comprising a first component carrier (CC) and a second CC, wherein the first CC comprises a primary carrier utilizing a licensed frequency bandwidth and the second CC comprises a secondary carrier utilizing an unlicensed frequency bandwidth;
• receive a control signal on the licensed frequency bandwidth of the first CC that indicates a channel availability on the unlicensed frequency bandwidth of the second CC;
• receive a physical downlink control channel (PDCCH) message on the first CC, wherein the PDCCH message schedules resources of the second CC, wherein a duration of transmission time intervals (TTIs) in the second CC is shorter than a duration of TTIs in the first CC of the first CC, and wherein the PDCCH message is transmitted in a first TTI of the first CC and assigns a TTI of the second CC that at least partially overlaps in time with a subsequent TTI of the first CC, the subsequent TTI of the first CC being subsequent to the first TTI of the first CC;
• and
• monitor the second CC in response to the received control signal.