Terminal apparatus, base station apparatus, communication method, and integrated circuit
A terminal apparatus attempts to decode a PDCCH during an active time in a case that an intermittent reception is configured. The terminal apparatus determines whether to start a UL HARQ RTT timer for a HARQ process based on whether a termination of an uplink transmission is indicated in a case that the PDCCH indicates the uplink transmission for the HARQ process.
1. A terminal apparatus comprising:
reception circuitry configured to and/or programmed to receive a PDCCH (Physical Downlink Control Channel) with an uplink grant which is used for scheduling of an initial transmission of a PUSCH (Physical Uplink Shared Channel);
transmission circuitry configured to and/or programmed to:
perform transmission of the PUSCH; and
drop remaining of the transmission of the PUSCH, if a termination command is detected; and
medium access control layer processing circuitry configured to and/or programmed to start an UL HARQ RTT (Uplink Hybrid Automatic Repeat Request Round Trip Time) timer for a HARQ process based on a condition that the PDCCH indicates an uplink transmission and the termination command has not been received.
2. The terminal apparatus according to claim 1 , wherein
the termination command is received on a second PDCCH.
3. The terminal apparatus according to claim 1 , wherein
the termination command includes an ACK (Acknowledgement), a HARQ-ACK, HARQ feedback, or a HARQ response.
4. The terminal apparatus according to claim 1 , wherein
The PDCCH is an MPDCCH (Machine type communication PDCCH).
5. A communication method of a terminal apparatus, the communication method comprising:
receiving a PDCCH (Physical Downlink Control Channel) with an uplink grant which is used for scheduling of an initial transmission of a PUSCH (Physical Uplink Shared Channel);
performing transmission of the PUSCH;
dropping remaining of the transmission of the PUSCH if a termination command is detected; and
starting an UL HARQ RTT (Uplink Hybrid Automatic Repeat Request Round Trip Time) timer for a HARQ process based on a condition that the PDCCH indicates an uplink transmission and the termination command has not been received.