Wireless communication system, base station, terminal, and method of communication

1. A wireless communication system in which control information is capable of being transmitted, when a timing of transmitting data and a timing of transmitting the control information by a terminal overlap with each other, to a base station simultaneously with the data using a channel assigned to transmission of the data, the wireless communication system comprising:

a base station that transmits a first signal including information indicating whether the control information is able to be transmitted using the channel assigned to the transmission of the data; and

a terminal that receives the first signal including the information indicating whether the control information is able to be transmitted using the channel assigned to the transmission of the data, wherein

in a case that the timing of transmitting the data and the timing of transmitting the control information overlap with each other, the terminal transmits, when the information in the first signal indicates that the control information is not able to be transmitted using the channel, the control information to the base station using a resource other than the channel, and transmits, when the information in the first signal indicates that the control information is able to be transmitted using the channel, the control information to the base station using the channel, wherein

the information indicates, when the data is a first type having a first priority, that the control information is not able to be transmitted using the channel, and

the information indicates, when the data is a second type having a second priority that is different from the first priority, that the control information is able to be transmitted using the channel.

2. The wireless communication system according to claim 1 , wherein the base station transmits a radio resource control (RRC) signal that configures the resource other than the channel, and

the resource other than the channel is a resource of a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH).

3. The wireless communication system according to claim 1 , wherein the base station transmits, to the terminal, a second signal including information on a resource for transmitting the control information by a specific field in a downlink channel.

4. The wireless communication system according to claim 1 , wherein the base station transmits, to the terminal, a second signal including information identifying an area to which a downlink channel related to a resource for transmitting the control information is assigned.

5. The wireless communication system according to claim 1 , wherein

the terminal transmits, to the base station, a second signal according to a type of the data,

the base station transmits, to the terminal, a third signal including information on a resource for transmitting the control information using a resource other than a downlink channel indicating the channel assigned to the transmission of the data when the type of the data is a predetermined type, and

the terminal transmits, when the timing of transmitting the data and the timing of transmitting the control information overlap with each other, the control information to the base station in accordance with pieces of the information included in the second and third signals.

6. The wireless communication system according to claim 1 , wherein when a second type of data occurs after the first signal including information indicating a first type as information on a type of the data is transmitted and when a timing of transmitting the second type of data and the timing of transmitting the control information overlap with each other, the terminal transmits the control information to the base station using a resource other than a channel assigned to transmission of the second type of data.

7. A base station that performs wireless communication with a terminal capable of transmitting, when a timing of transmitting data and a timing of transmitting control information overlap with each other, the control information simultaneously with the data using a channel assigned to transmission of the data, the base station comprising:

a transmitter that transmits, to the terminal, a first signal including information indicating whether the control information is able to be transmitted using the channel assigned to the transmission of the data;

a receiver that, in a case that the timing of transmitting the data and the timing of transmitting the control information overlap with each other, receives, when the information in the first signal indicates that the control information is not able to be transmitted using the channel, the control information in a resource other than the channel, and receives, when the information in the first signal indicates that the control information is able to be transmitted using the channel, the control information in the channel, wherein

the information indicates, when the data is a first type having a first priority, that the control information is not able to be transmitted using the channel, and

the information indicates, when the data is a second type having a second priority that is different from the first priority, that the control information is able to be transmitted using the channel.

8. The base station according to claim 7 , wherein the transmitter transmits a radio resource control (RRC) signal that configures the resource other than the channel, and

the resource other than the channel is a resource of a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH).

9. The base station according to claim 7 , wherein the receiver receives, from the terminal, a second signal according to a type of the data.

10. The base station according to claim 9 , wherein the transmitter transmits information included in the second signal according to the type of the data.

11. A terminal capable of transmitting, when a timing of transmitting data and a timing of transmitting control information overlap with each other, the control information to a base station simultaneously with the data using a channel assigned to transmission of the data, the terminal comprising:

a receiver that receives a first signal including information indicating whether the control information is able to be transmitted using the channel assigned to transmission of the data; and

a transmitter that, in a case that the timing of transmitting the data and the timing of transmitting the control information overlap with each other, transmits, when the information in the first signal indicates that the control information is not able to be transmitted using the channel, the control information to the base station using a resource other than the channel, and transmits, when the information in the first signal indicates that the control information is able to be transmitted using the channel, the control information to the base station using the channel, wherein

the information indicates, when the data is a first type having a first priority, that the control information is not able to be transmitted using the channel, and

the information indicates, when the data is a second type having a second priority that is different from the first priority, that the control information is able to be transmitted using the channel.

12. The terminal according to claim 11 , wherein the resource other than the channel is a resource of a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH), which is configured by a radio resource control (RRC) signal.

13. The terminal according to claim 11 , wherein the transmitter transmits, to the base station, a second signal according to a type of the data.

14. The terminal according to claim 13 , wherein the receiver receives information included in the second signal according to the type of the data.

15. The terminal according to claim 13 , wherein the information in the first signal indicates that the control information is able to be transmitted using the channel when the type of the data is a first type, and indicates that the control information is not able to be transmitted using the channel when the type of the data is a second type.

16. A method of communication in which control information is capable of being transmitted, when a timing of transmitting data and a timing of transmitting the control information by a terminal overlap with each other, to a base station simultaneously with the data using a channel assigned to transmission of the data, the method comprising:

by the base station, transmitting a first signal including information indicating whether the control information is able to be transmitted using the channel assigned to the transmission of the data;

by the terminal, receiving the first signal including the information indicating whether the control information is able to be transmitted using the channel assigned to the transmission of the data; and

in a case that the timing of transmitting the data and the timing of transmitting the control information overlap with each other, by the terminal, transmitting, when the information in the first signal indicates that the control information is not able to be transmitted using the channel, the control information to the base station using a resource other than the channel, and transmitting, when the information in the first signal indicates that the control information is able to be transmitted using the channel, the control information to the base station using the channel, wherein

the information indicates, when the data is a first type having a first priority, that the control information is not able to be transmitted using the channel, and

the information indicates, when the data is a second type having a second priority that is different from the first priority, that the control information is able to be transmitted using the channel.