User terminal and radio communication method
In order to appropriately control reception of downlink control information, a user terminal according to one aspect of the present disclosure includes: a receiving section that receives first downlink control information and second downlink control information to which at least one of different Radio Network Temporary Identifiers (RNTIs), different modulations and coding tables, and different transmission parameters are applied; and a control section that stores the first downlink control information and the second downlink control information thus received so that the number of pieces of the first downlink control information and the second downlink control information to store do not exceed a given number.
1. A terminal comprising:
a transmitter that transmits a first physical uplink shared channel which is scheduled for a first cell and that transmits a second physical uplink shared channel which is scheduled for a second cell respectively; and
a processor that controls a reception process by assuming that up to a maximum number X of physical downlink control channels for downlink control information, the downlink control information being with cyclic redundancy check (CRC) scrambled by a given radio network temporary identifier (RNTI), for all of the maximum number X of physical downlink control channels, are received, the downlink control information scheduling a physical uplink shared channel that has not been transmitted and is different from the first and second physical uplink shared channel,
wherein the maximum number X of physical downlink control channels is more than one,
and
wherein the processor assumes that up to the maximum number X of physical downlink control channels are respectively received per cell including the first cell and the second cell.
2. The terminal according to claim 1 , wherein the processor performs a control to not include, in the maximum number X of physical downlink control channels, reception of a physical downlink control channel for a downlink control information with CRC scrambled by a temporary cell RNTI (TC-RNTI).
3. The terminal according to claim 2 , wherein the downlink control information comprises a DCI format 0_0 or a DCI format 0_1.
4. The terminal according to claim 2 , wherein, when cross-carrier scheduling is applied, the processor determines a maximum number of receptions of physical downlink control channels in scheduled cells based on a number of the scheduled cells.
5. The terminal according to claim 2 , wherein the maximum number X of physical downlink control channels is 16.
6. The terminal according to claim 1 , wherein the downlink control information comprises a DCI format 0_0 or a DCI format 0_1.
7. The terminal according to claim 6 , wherein, when cross-carrier scheduling is applied, the processor determines a maximum number of receptions of physical downlink control channels in scheduled cells based on a number of the scheduled cells.
8. The terminal according to claim 1 , wherein, when cross-carrier scheduling is applied, the processor determines a maximum number of receptions of physical downlink control channels in scheduled cells based on a number of the scheduled cells.
9. The terminal according to claim 1 , wherein the maximum number X of physical downlink control channels is 16.
10. The terminal according to claim 1 , wherein the given RNTI comprises a cell RNTI (C-RNTI), a configured scheduling RNTI (CS-RNTI), or a modulation and coding scheme cell RNTI (MCS-C-RNTI).
11. A radio communication method for a terminal, comprising:
transmitting a first physical uplink shared channel which is scheduled for a first cell and transmitting a second physical uplink shared channel which is scheduled for a second cell respectively; and
controlling a reception process by assuming that up to a maximum number X of physical downlink control channels for downlink control information, the downlink control information being with cyclic redundancy check (CRC) scrambled by a given radio network temporary identifier (RNTI), for all of the maximum number X of physical downlink control channels, are received, the downlink control information scheduling a physical uplink shared channel that has not been transmitted and is different from the first and second physical uplink shared channel,
wherein the maximum number X of physical downlink control channels is more than one,
and
wherein the radio communication method further comprises controlling a reception process by assuming that up to the maximum number X of physical downlink control channels are respectively received per cell including the first cell and the second cell.
12. A base station comprising:
a receiver that receives a first physical uplink shared channel which is scheduled for a first cell and that receives a second physical uplink shared channel which is scheduled for a second cell respectively; and
a processor that controls a transmission process by assuming that a terminal receives up to a maximum number X of physical downlink control channels for downlink control information, the downlink control information being with cyclic redundancy check (CRC) scrambled by a given radio network temporary identifier (RNTI), for all of the maximum number X of physical downlink control channels, the downlink control information scheduling a physical uplink shared channel that has not been transmitted by the terminal and is different from the first and second physical uplink shared channel,
wherein the maximum number X of physical downlink control channels is more than one,
and
wherein the processor assumes that up to the maximum number X of physical downlink control channels are respectively received by the terminal per cell including the first cell and the second cell.
13. A system comprising a terminal and a base station, wherein:
the terminal comprises:
a transmitter that transmits a first physical uplink shared channel which is scheduled for a first cell and that transmits a second physical uplink shared channel which is scheduled for a second cell respectively; and
a first processor that controls a reception process by assuming that up to a maximum number X of physical downlink control channels for downlink control information, the downlink control information being with cyclic redundancy check (CRC) scrambled by a given radio network temporary identifier (RNTI), for all of the maximum number X of physical downlink control channels, are received, the downlink control information scheduling a physical uplink shared channel that has not been transmitted and is different from the first and second physical uplink shared channel,
wherein the maximum number X of physical downlink control channels is more than one, and
wherein the first processor assumes that up to the maximum number X of physical downlink control channels are respectively received per cell including the first cell and the second cell, and
the base station comprises:
a receiver that receives the first and second physical uplink shared channel respectively; and
a second processor that controls a transmission process by assuming that the terminal receives up to the maximum number X of the physical downlink control channels,
wherein the second processor assumes that up to the maximum number X of physical downlink control channels are respectively received by the terminal per cell including the first cell and the second cell.