Method, reception device and transmission device for sidelink communication
The present disclosure relates to a pre-5 th -Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4 th -Generation (4G) communication system such as Long Term Evolution (LTE). The present application discloses a method, a reception device, and a transmission device for sidelink communication, capable of determining a physical structure of a sidelink feedback channel and determining resources for transmitting the sidelink feedback channel. The method for sidelink communication includes: receiving a physical sidelink channel, to obtain sidelink data corresponding to the physical sidelink channel; obtaining physical sidelink feedback channel (PSFCH) configuration, wherein a PSFCH is used to carry feedback information for the sidelink data; determining at least one PSFCH resource for transmitting the PSFCH based on the PSFCH configuration; and transmitting the PSFCH on the determined PSFCH resources.
1. A method performed by a terminal in a wireless communication system, the method comprising:
receiving a radio resource control (RRC) message including information for a sidelink resource pool, wherein the information for the sidelink resource pool includes configuration information for a physical sidelink feedback channel (PSFCH) and information on a number of a subchannel, and wherein the configuration information includes:
information on a time gap,
information on a set of resource blocks (RBs) for the PSFCH, and
information on a period for the PSFCH; and
transmitting hybrid automatic repeat request acknowledgement (HARQ-ACK) information in a first slot including PSFCH resources,
wherein the first slot is at least one slot after the time gap from a slot of a physical sidelink shared channel (PSSCH),
wherein a number of the PSFCH resources for multiplexing the HARQ-ACK information is identified based on the set of the RBs for the PSFCH, the period for the PSFCH, and the number of the subchannel, and
wherein at least one RB for the PSFCH is allocated to a PSSCH slot associated with the first slot based on the period for the PSFCH and the number of the subchannel.
2. The method of claim 1 ,
wherein the configuration information further includes information on a number of a sequence, and
wherein the number of the PSFCH resources is further identified based on the number of the sequence.
3. The method of claim 1 ,
wherein the PSFCH resources are indexed based on the period for the PSFCH and the number of subchannel.
4. The method of claim 1 , further comprising:
identifying a PSFCH resource corresponding to the PSSCH based on a source identity (ID) and an ID of the terminal.
5. The method of claim 1 ,
wherein the HARQ-ACK information is transmitted on the PSFCH resources in a form of a sequence.
6. A terminal in a wireless communication system, the terminal comprising:
transceiver; and
processor coupled with the transceiver and configured to:
receive a radio resource control (RRC) message including information for a sidelink resource pool, wherein the information for the sidelink resource pool includes configuration information for a physical sidelink feedback channel (PSFCH) and information on a number of a subchannel, and wherein the configuration information includes:
information on a time gap,
information on a set of resource blocks (RBs) for the PSFCH, and
information on a period for the PSFCH, and
transmit hybrid automatic repeat request acknowledgement (HARQ-ACK) information in a first slot including PSFCH resources,
wherein the first slot is at least one slot after the time gap from a slot of a physical sidelink shared channel (PSSCH),
wherein a number of the PSFCH resources for multiplexing the HARQ-ACK information is identified based on the set of the RBs for the PSFCH, the period for the PSFCH, and the number of the subchannel, and
wherein at least one RB for the PSFCH is allocated to a PSSCH slot associated with the first slot based on the period for the PSFCH and the number of the subchannel.
7. The terminal of claim 6 ,
wherein the configuration information further includes information on a number of a sequence, and
wherein the number of the PSFCH resources is further identified based on the number of the sequence.
8. The terminal of claim 6 ,
wherein the PSFCH resources are indexed based on the period for the PSFCH, and the number of subchannel.
9. The terminal of claim 6 , wherein the processor is configured to:
identify a PSFCH resource corresponding to the PSSCH based on a source identity (ID) and an ID of the terminal.
10. The terminal of claim 6 ,
wherein the HARQ-ACK information is transmitted on the PSFCH resources in a form of a sequence.