Terminal apparatus, base station apparatus, communication method, and integrated circuit
A terminal apparatus receives an uplink grant used to schedule a PUSCH; transmits, in a case that an HARQ-ACK request included in the uplink grant is set so as to trigger transmission of an HARQ-ACK, the HARQ-ACK on the PUSCH corresponding to the uplink grant; and transmits, in a case that a CSI request included in the uplink grant is set so as to trigger a CSI report, an RI on the PUSCH corresponding to the uplink grant, in which an index of an SC-FDMA symbol in which the RI is transmitted is provided based on a value of the HARQ-ACK request.
1. A terminal apparatus comprising:
a receiver configured to receive an uplink grant used to schedule a Physical Uplink Shared Channel (PUSCH), the uplink grant comprising a Hybrid Automatic Repeat reQuest-Acknowledgement (HARQ-ACK) request field and a Channel State Information (CSI) request field;
a processor configured to obtain an index based on a value of the HARQ-ACK request field, the index indicating one of Single Carrier-Frequency Division Multiple Access (SC-FDMA) symbols in the PUSCH corresponding to the uplink grant; and
a transmitter configured to:
transmit a HARQ-ACK corresponding to the uplink grant in a case that the HARQ-ACK request field is set to trigger HARQ-ACK transmission on the PUSCH; and
transmit, based on the index, a Rank Indicator (RI) on the one of the SC-FDMA symbols in the PUSCH corresponding to the uplink grant in a case that the CSI request field is set to trigger a CSI report.
2. The terminal apparatus according to claim 1 , wherein the processor is further configured to calculate a number of coded bits of the RI based on the index.
3. A base station apparatus comprising:
a transmitter configured to transmit an uplink grant used to schedule a Physical Uplink Shared Channel (PUSCH), the uplink grant comprising a Hybrid Automatic Repeat reQuest-Acknowledgement (HARQ-ACK) request field and a Channel State Information (CSI) request field, the HARQ-ACK request field including a value; and
a receiver configured to:
receive a HARQ-ACK corresponding to the uplink grant when the HARQ-ACK request field is set to trigger HARQ-ACK transmission on the PUSCH;
receive, based on an index, a Rank Indicator (RI) on one of SC-FDMA symbols in the PUSCH corresponding to the uplink grant when the CSI request field is set to trigger a CSI report,
wherein the index indicates the one of the SC-FDMA symbols in the PUSCH and is calculated based on the value of the HARQ-ACK request field.
4. The base station apparatus according to claim 3 , wherein a number of coded bits of the RI is calculated based on the index.
5. A communication method for a terminal apparatus, the communication method comprising:
receiving an uplink grant used to schedule a Physical Uplink Shared Channel (PUSCH), the uplink grant comprising a Hybrid Automatic Repeat reQuest-Acknowledgement (HARQ-ACK) request field and a Channel State Information (CSI) request field;
obtaining an index based on a value of the HARQ-ACK request field, the index indicating one of Single Carrier-Frequency Division Multiple Access (SC-FDMA) symbols in the PUSCH corresponding to the uplink grant;
transmitting a HARQ-ACK corresponding to the uplink grant in a case that the HARQ-ACK request field is set to trigger HARQ-ACK transmission on the PUSCH; and
transmitting, based on the index, a Rank Indicator (RI) on the one of the SC-FDMA symbols in the PUSCH corresponding to the uplink grant in a case that the CSI request field is set to trigger a CSI report.
6. The communication method according to claim 5 , further comprising:
calculating a number of coded bits of the RI based on the index.
7. A communication method for a base station apparatus, the communication method comprising:
transmitting an uplink grant used to schedule a Physical Uplink Shared Channel (PUSCH), the uplink grant comprising a Hybrid Automatic Repeat reQuest-Acknowledgement (HARQ-ACK) request field and a Channel State Information (CSI) request field, the HARQ-ACK request field including a value;
receiving a HARQ-ACK corresponding to the uplink grant when the HARQ-ACK request field is set to trigger HARQ-ACK transmission on the PUSCH; and
receiving, based on an index, a Rank Indicator (RI) on one of SC-FDMA symbols in the PUSCH corresponding to the uplink grant when the CSI request field is set to trigger a CSI report,
wherein the index indicates the one of the SC-FDMA symbols in the PUSCH and is calculated based on the value of the HARQ-ACK request field.
8. The communication method according to claim 7 , wherein a number of coded bits of the RI is calculated based on the index.
9. The terminal apparatus according to claim 1 , wherein the processor is further configured to calculate a number of coded bits of the RI based on a modulation order of a transport block and the transport block is transmitted on the PUSCH.
10. The terminal apparatus according to claim 1 , wherein the processor is further configured to calculate a number of coded bits of the RI based on a number of cyclic redundancy check (CRC) parity bits and the CRC parity bits are transmitted on the PUSCH.
11. The terminal apparatus according to claim 1 , wherein the processor is further configured to calculate a number of coded bits of the RI based on a bandwidth of the PUSCH.
12. The terminal apparatus according to claim 1 , wherein the processor is further configured to calculate a number of coded bits of the RI based on an offset value and the offset value is determined based on at least one of:
whether the PUSCH is in a cell belonging to a cell group, the cell group comprising a plurality of licensed assisted access cells;
whether the HARQ transmission is on the PUSCH;
the value of the HARQ-ACK request field; or
a number of the SC-FDMA symbols in the PUSCH.
13. The base station apparatus according to claim 3 , wherein a number of coded bits of the RI is calculated based on a modulation order of a transport block and the transport block is transmitted on the PUSCH.
14. The base station apparatus according to claim 3 , wherein a number of coded bits of the RI is calculated based on a number of cyclic redundancy check (CRC) parity bits and the CRC parity bits are transmitted on the PUSCH.
15. The base station apparatus according to claim 3 , wherein a number of coded bits of the RI is calculated based on a bandwidth of the PUSCH.
16. The base station apparatus according to claim 3 , wherein a number of coded bits of the RI is calculated based on an offset value and the offset value is determined based on at least one of:
whether the PUSCH is in a cell belonging to a cell group, the cell group comprising a plurality of licensed assisted access cells;
whether the HARQ transmission is on the PUSCH;
the value of the HARQ-ACK request field; or
a number of the SC-FDMA symbols in the PUSCH.
17. The communication method according to claim 5 , further comprising:
calculating a number of coded bits of the RI based on a number of cyclic redundancy check (CRC) parity bits, wherein the CRC parity bits are transmitted on the PUSCH.
18. The communication method according to claim 5 , further comprising:
calculating a number of coded bits of the RI based on an offset value,
wherein the offset value is determined based on at least one of:
whether the PUSCH is in a cell belonging to a cell group, the cell group comprising a plurality of licensed assisted access cells;
whether the HARQ transmission is on the PUSCH;
the value of the HARQ-ACK request field; or
a number of the SC-FDMA symbols in the PUSCH.
19. The communication method according to claim 7 , wherein a number of coded bits of the RI is calculated based on a number of cyclic redundancy check (CRC) parity bits and the CRC parity bits are transmitted on the PUSCH.
20. The communication method according to claim 7 , wherein a number of coded bits of the RI is calculated based on an offset value and the offset value is determined based on at least one of:
whether the PUSCH is in a cell belonging to a cell group, the cell group comprising a plurality of licensed assisted access cells;
whether the HARQ transmission is on the PUSCH;
the value of the HARQ-ACK request field; or
a number of the SC-FDMA symbols in the PUSCH.