Method and device for transmitting and receiving sidelink data in communication system
AssigneesHyundai Motor Company, Kia Corporation
InventorsHyuk Min Son, Gene Back Hahn, In Yong Jung
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Abstract
Disclosed are a method and device for transmitting and receiving sidelink data in a communication system. An operation method of a first terminal comprises the steps of: generating first SCI including MCS change information indicating whether to change an MCS used for sidelink communication; transmitting the first SCI to a second terminal on a PSCCH; performing a coding operation and a modulation operation on first data on the basis of the MCS determined by the MCS change information; and transmitting the first data to the second terminal on a PSSCH.
Claims20
An operation method of a first terminal in a communication system, the operation method comprising:
- generating first sidelink control information (SCI) including modulation and coding scheme (MCS) change information indicating whether an MCS used for sidelink communication is changed;
- transmitting the first SCI to a second terminal on a physical sidelink control information (PSCCH);
- performing a coding operation and a modulation operation on the first data based on an MCS determined by the MCS change information;
- and
- transmitting the first data to the second terminal on a physical sidelink shared channel (PSSCH).
An operation method of a second terminal in a communication system, the operation method comprising:
- receiving, from a first terminal, first sidelink control information (SCI) on a physical sidelink control information (PSCCH), the first SCI including resource allocation information of first data and modulation and coding scheme (MCS) change information indicating whether an MCS used for sidelink communication is changed;
- performing a monitoring operation on a physical sidelink shared channel (PSSCH) indicated by the resource allocation information;
- and
- performing a decoding operation on the first data obtained by the monitoring operation,
- wherein the decoding operation is performed based on an MCS determined by the MCS change information.
A first terminal in a communication system, the first terminal comprising:
- a processor;
- and
- a memory storing one or more instructions executable by the processor,
- wherein the one or more instructions cause the first terminal to:
- generate first sidelink control information (SCI) including modulation and coding scheme (MCS) change information indicating whether an MCS used for sidelink communication is changed;
- transmit the first SCI to a second terminal on a physical sidelink control information (PSCCH);
- perform a coding operation and a modulation operation on the first data based on an MCS determined by the MCS change information;
- and
- transmit the first data to the second terminal on a physical sidelink shared channel (PSSCH).
The terminal according to 16, wherein the one or more instructions further cause the first terminal to transmit one or more data to the second terminal without receiving a hybrid automatic repeat request (HARQ) response for the first data, wherein the transmissions of the one or more data are scheduled by the first SCI, and the first data and the one or more data are same data.
The terminal according to 16, wherein the one or more instructions further cause the first terminal to:
- transmit second SCI for scheduling transmission of second data to the second terminal;
- transmit the second data to the second terminal based on the second SCI;
- and
- receive a HARQ response for the first data and a HARQ response for the second data from the second terminal.
The terminal according to 16, wherein the first SCI includes at least one of an information element indicating a total number of retransmissions of same data, an information element indicating a total number of blind retransmissions of the same data, an information element indicating a remaining number of retransmissions of the same data, an information element indicating a remaining number of blind retransmissions of the same data, and an information element indicating whether blind retransmission is performed, the total number of blind retransmissions indicates a total number of transmissions of the same data without reception of a HARQ response, and the remaining number of blind retransmissions indicates a remaining number of transmissions of the same data without reception of a HARQ response.
Dependencies are inferred from the claim text.