User equipment
A user equipment includes a transmitting unit that transmits, to another user equipment, data through a physical shared channel; a control unit that identifies a resource in which a channel used for transmission and reception of a response related to retransmission control for the data is allocated; and a receiving unit that receives, from the another user equipment, the response related to the retransmission control for the data through the channel used for transmission and reception of the response related to the retransmission control, wherein the control unit identifies, based on a subchannel in which the physical shared channel is allocated, the resource in which the channel for receiving the response related to the retransmission control is allocated.
1. A terminal comprising:
a receiver that receives a physical shared channel transmitted from another terminal;
a controller that determines, from among multiple candidates for a resource for transmitting a feedback channel, the resource at which the feedback channel including a HARQ response corresponding to the physical shared channel is to be allocated, the resource including a code domain resource, based on sidelink control information (SCI), in response reception of the physical shared channel; and
a transmitter that transmits, to the another terminal, the feedback channel by using the determined resource,
wherein multiple slots at which the multiple candidates for the resource are allocated are consecutive in a time domain, and, in a frequency domain, the multiple candidates for the resource are allocated to a single subchannel that is used to transmit the physical shared channel, and
wherein the controller determines a slot at which the feedback channel is to be allocated based on configuration information indicating a time gap between the physical shared channel and the feedback channel, the configuration information indicating the time gap being provided by higher layer signaling.
2. A communication method executed by a terminal, the method comprising:
receiving a physical shared channel transmitted from another terminal;
determining, from among multiple candidates for a resource for transmitting a feedback channel, the resource at which the feedback channel including a HARQ response corresponding to the physical shared channel is to be allocated, the resource including a code domain resource, based on sidelink control information (SCI), in response reception of the physical shared channel; and
transmitting, to the another terminal, the feedback channel by using the determined resource,
wherein multiple slots at which the multiple candidates for the resource are allocated are consecutive in a time domain, and, in a frequency domain, the multiple candidates for the resource are allocated to a single subchannel that is used to transmit the physical shared channel, and
wherein the terminal determines a slot at which the feedback channel is to be allocated based on configuration information indicating a time gap between the physical shared channel and the feedback channel, the configuration information indicating the time gap being provided by higher layer signaling.
3. A radio communication system comprising:
a first terminal; and
a second terminal,
wherein the first terminal includes
a receiver that receives a physical shared channel transmitted from the second terminal;
a controller that determines, from among multiple candidates for a resource for transmitting a feedback channel, the resource at which the feedback channel including a HARQ response corresponding to the physical shared channel is to be allocated, the resource including a code domain resource, based on sidelink control information (SCI), in response reception of the physical shared channel; and
a transmitter that transmits, to the second terminal, the feedback channel by using the determined resource,
wherein multiple slots at which the multiple candidates for the resource are allocated are consecutive in a time domain, and, in a frequency domain, the multiple candidates for the resource are allocated to a single subchannel that is used to transmit the physical shared channel,
wherein the first terminal determines a slot at which the feedback channel is to be allocated based on configuration information indicating a time gap between the physical shared channel and the feedback channel, the configuration information indicating the time gap being provided by higher layer signaling, and
wherein the second terminal receives the feedback channel from the first terminal.