Terminal device, base station device, communication method, and integrated circuit

A terminal device comprising:

• receiving circuitry configured to:
• receive first information used for indicating for which serving cell(s) an aperiodic channel state information (CSI) report is triggered in a case that the aperiodic CSI report is triggered by using a value of a 2-bit CSI request field,
• receive on a physical downlink control channel (PDCCH), downlink control information including the 2-bit CSI request field, the downlink control information being used for scheduling of a physical uplink shared channel (PUSCH),
• receive second information used for indicating for which serving cell(s) the aperiodic CSI report is triggered in a case that the aperiodic CSI report is triggered by using a value of a 3-bit CSI request field, and
• receive on the PDCCH, the downlink control information including the 3-bit CSI request field, the downlink control information being used for scheduling of the PUSCH;
• and
• transmitting circuitry configured to:
• perform, based on the value of the 2-bit CSI request field, an aperiodic CSI reporting using the PUSCH, the aperiodic CSI report being triggered by using the first information and the value of the 2-bit CSI request field, and
• perform, based on the value of the 3-bit CSI request field, the aperiodic CSI reporting using the PUSCH, the aperiodic CSI report being triggered by using the second information and the value of the 3-bit CSI request field, wherein
• the 2-bit CSI request field is applied in a case that more than one downlink cell is configured, no more than five downlink cells are configured, and the downlink control information including the 2-bit CSI request field is mapped onto a user equipment (UE) specific search space, the UE specific search space being given by a cell-radio network temporary identifier (C-RNTI), and
• the 3-bit CSI request is applied in a case that more than five downlink cells are configured and the downlink control information including the 3-bit CSI request field is mapped onto the UE specific search space, the UE specific search space being given by the C-RNTI.

A base station device comprising:

• transmitting circuitry configured to:
• transmit first information used for indicating for which serving cell(s) an aperiodic channel state information (CSI) report is triggered in a case that the aperiodic CSI report is triggered by using a value of a 2-bit CSI request field,
• transmit on a physical downlink control channel (PDCCH), downlink control information including the 2-bit CSI request field, the downlink control information being used for scheduling of a physical uplink shared channel (PUSCH),
• transmit second information used for indicating for which serving cell(s) the aperiodic CSI report is triggered in a case that the aperiodic CSI report is triggered by using a value of a 3-bit CSI request field, and
• transmit on the PDCCH, the downlink control information including the 3-bit CSI request field, the downlink control information being used for scheduling of the PUSCH;
• and
• receiving circuitry configured to:
• receive, based on the value of the 2-bit CSI request field, an aperiodic CSI reporting using the PUSCH, the aperiodic CSI report being triggered by using the first information and the value of the 2-bit CSI request field, and
• receive, based on the value of the 3-bit CSI request field, the aperiodic CSI reporting using the PUSCH, the aperiodic CSI report being triggered by using the second information and the value of the 3-bit CSI request field, wherein
• the 2-bit CSI request field is applied in a case that more than one downlink cell is configured, no more than five downlink cells are configured, and the downlink control information including the 2-bit CSI request field is mapped onto a user equipment (UE) specific search space, the UE specific search space being given by a cell-radio network temporary identifier (C-RNTI), and
• the 3-bit CSI request is applied in a case that more than five downlink cells are configured and the downlink control information including the 3-bit CSI request field is mapped onto the UE specific search space, the UE specific search space being given by the C-RNTI.

A communication method of a terminal device comprising:

• receiving first information used for indicating for which serving cell(s) an aperiodic channel state information (CSI) report is triggered in a case that the aperiodic CSI report is triggered by using a value of a 2-bit CSI request field,
• receiving on a physical downlink control channel (PDCCH), downlink control information including the 2-bit CSI request field, the downlink control information being used for scheduling of a physical uplink shared channel (PUSCH),
• receiving second information used for indicating for which serving cell(s) the aperiodic CSI report is triggered in a case that the aperiodic CSI report is triggered by using a value of a 3-bit CSI request field, and
• receiving on the PDCCH, the downlink control information including the 3-bit CSI request field, the downlink control information being used for scheduling of the PUSCH;
• and
• performing, based on the value of the 2-bit CSI request field, an aperiodic CSI reporting using the PUSCH, the aperiodic CSI report being triggered by using the first information and the value of the 2-bit CSI request field, and
• performing, based on the value of the 3-bit CSI request field, the aperiodic CSI reporting using the PUSCH, the aperiodic CSI report being triggered by using the second information and the value of the 3-bit CSI request field, wherein
• the 2-bit CSI request field is applied in a case that more than one downlink cell is configured, no more than five downlink cells are configured, and the downlink control information including the 2-bit CSI request field is mapped onto a user equipment (UE) specific search space, the UE specific search space being given by a cell-radio network temporary identifier (C-RNTI), and
• the 3-bit CSI request is applied in a case that more than five downlink cells are configured and the downlink control information including the 3-bit CSI request field is mapped onto the UE specific search space, the UE specific search space being given by the C-RNTI.

A communication method of a base station device comprising:

• transmitting first information used for indicating for which serving cell(s) an aperiodic channel state information (CSI) report is triggered in a case that the aperiodic CSI report is triggered by using a value of a 2-bit CSI request field,
• transmitting on a physical downlink control channel (PDCCH), downlink control information including the 2-bit CSI request field, the downlink control information being used for scheduling of a physical uplink shared channel (PUSCH),
• transmitting second information used for indicating for which serving cell(s) the aperiodic CSI report is triggered in a case that the aperiodic CSI report is triggered by using a value of a 3-bit CSI request field, and
• transmitting on the PDCCH, the downlink control information including the 3-bit CSI request field, the downlink control information being used for scheduling of the PUSCH;
• and
• receiving, based on the value of the 2-bit CSI request field, an aperiodic CSI reporting using the PUSCH, the aperiodic CSI report being triggered by using the first information and the value of the 2-bit CSI request field, and
• receiving, based on the value of the 3-bit CSI request field, the aperiodic CSI reporting using the PUSCH, the aperiodic CSI report being triggered by using the second information and the value of the 3-bit CSI request field, wherein
• the 2-bit CSI request field is applied in a case that more than one downlink cell is configured, no more than five downlink cells are configured, and the downlink control information including the 2-bit CSI request field is mapped onto a user equipment (UE) specific search space, the UE specific search space being given by a cell-radio network temporary identifier (C-RNTI), and
• the 3-bit CSI request is applied in a case that more than five downlink cells are configured and the downlink control information including the 3-bit CSI request field is mapped onto the UE specific search space, the UE specific search space being given by the C-RNTI.

An integrated circuit mounted on a terminal device, the integrated circuit causing the terminal device to perform the functions of:

• receiving first information used for indicating for which serving cell(s) an aperiodic channel state information (CSI) report is triggered in a case that the aperiodic CSI report is triggered by using a value of a 2-bit CSI request field,
• receiving on a physical downlink control channel (PDCCH), downlink control information including the 2-bit CSI request field, the downlink control information being used for scheduling of a physical uplink shared channel (PUSCH),
• receiving second information used for indicating for which serving cell(s) the aperiodic CSI report is triggered in a case that the aperiodic CSI report is triggered by using a value of a 3-bit CSI request field, and
• receiving on the PDCCH, the downlink control information including the 3-bit CSI request field, the downlink control information being used for scheduling of the PUSCH;
• and
• performing, based on the value of the 2-bit CSI request field, an aperiodic CSI reporting using the PUSCH, the aperiodic CSI report being triggered by using the first information and the value of the 2-bit CSI request field, and
• performing, based on the value of the 3-bit CSI request field, the aperiodic CSI reporting using the PUSCH, the aperiodic CSI report being triggered by using the second information and the value of the 3-bit CSI request field, wherein
• the 2-bit CSI request field is applied in a case that more than one downlink cell is configured, no more than five downlink cells are configured, and the downlink control information including the 2-bit CSI request field is mapped onto a user equipment (UE) specific search space, the UE specific search space being given by a cell-radio network temporary identifier (C-RNTI), and
• the 3-bit CSI request is applied in a case that more than five downlink cells are configured and the downlink control information including the 3-bit CSI request field is mapped onto the UE specific search space, the UE specific search space being given by the C-RNTI.

An integrated circuit mounted on a base station device, the integrated circuit causing the base station device to perform the functions of:

• transmitting first information used for indicating for which serving cell(s) an aperiodic channel state information (CSI) report is triggered in a case that the aperiodic CSI report is triggered by using a value of a 2-bit CSI request field,
• transmitting on a physical downlink control channel (PDCCH), downlink control information including the 2-bit CSI request field, the downlink control information being used for scheduling of a physical uplink shared channel (PUSCH),
• transmitting second information used for indicating for which serving cell(s) the aperiodic CSI report is triggered in a case that the aperiodic CSI report is triggered by using a value of a 3-bit CSI request field, and
• transmitting on the PDCCH, the downlink control information including the 3-bit CSI request field, the downlink control information being used for scheduling of the PUSCH;
• and
• receiving, based on the value of the 2-bit CSI request field, an aperiodic CSI reporting using the PUSCH, the aperiodic CSI report being triggered by using the first information and the value of the 2-bit CSI request field, and
• receiving, based on the value of the 3-bit CSI request field, the aperiodic CSI reporting using the PUSCH, the aperiodic CSI report being triggered by using the second information and the value of the 3-bit CSI request field, wherein
• the 2-bit CSI request field is applied in a case that more than one downlink cell is configured, no more than five downlink cells are configured, and the downlink control information including the 2-bit CSI request field is mapped onto a user equipment (UE) specific search space, the UE specific search space being given by a cell-radio network temporary identifier (C-RNTI), and
• the 3-bit CSI request is applied in a case that more than five downlink cells are configured and the downlink control information including the 3-bit CSI request field is mapped onto the UE specific search space, the UE specific search space being given by the C-RNTI.