Method and apparatus for transmitting data based on grant free in wireless communication system
A communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT) are provided. The system and method provides for receiving, from a base station, downlink control information (DCI) including information on a hybrid automatic repeat request (HARQ) process number, identifying at least one grant free resource corresponding to the information on the HARQ process number, and releasing the at least one grant free resource based on the information. The disclosure discloses a grant-free based data transmission method in a wireless communication system that may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services.
1. A method performed by a terminal in a wireless communication system, the method comprising:
identifying a plurality of downlink semi-persistent scheduling (SPS) resources;
receiving one or more SPS physical downlink shared channels (PDSCHs) based on the plurality of downlink SPS resources; and
reporting hybrid automatic repeat request-Acknowledgement (HARQ-ACK) information corresponding to a first SPS PDSCH associated with a downlink SPS resource with a lowest number configured by a higher layer signaling, in case that the first SPS PDSCH associated with the downlink SPS resource with the lowest number at least partially overlaps with any other SPS PDSCH.
2. The method of claim 1 , wherein the HARQ-ACK information is transmitted on a physical uplink control channel (PUCCH).
3. The method of claim 1 , further comprising:
receiving, from a base station, configurations for the plurality of downlink SPS resources;
receiving, from the base station, first downlink control information (DCI) including a HARQ process number field;
identifying at least two configurations to be released among the configurations for the plurality of downlink SPS resources based on the first DCI, a value of the HARQ process number field in the first DCI corresponding to the at least two configurations to be released; and
releasing the at least two configurations.
4. The method of claim 3 , further comprising:
identifying whether information related to release of single or multiple configurations is configured,
wherein in case that the information is configured, the value of the HARQ process number field indicates to release the at least two configurations corresponding to the value, and
wherein in case that the information is not configured, the value of the HARQ process number field indicates a release for a corresponding configuration with an identifier which is a same value as the value of the HARQ process number field.
5. The method of claim 3 , further comprising:
receiving, from the base station, second DCI including the HARQ process number field and a redundancy version field; and
activating a configuration with an identifier having a same value as a value of the HARQ process number field in the second DCI, based on a value of the redundancy version field.
6. The method of claim 3 ,
wherein the first DCI includes a redundancy version field, a modulation and coding scheme field, and a frequency domain resource assignment field, and
wherein the at least two configurations are released based on a value of the redundancy version field, a value of the modulation and coding scheme field, and a value of the frequency domain resource assignment field.
7. A method performed by a base station in a wireless communication system, the method comprising:
identifying a plurality of downlink semi-persistent scheduling (SPS) resources;
transmitting, to a terminal, one or more SPS physical downlink shared channels (PDSCHs) based on the plurality of downlink SPS resources; and
receiving, from the terminal, hybrid automatic repeat request-Acknowledgement (HARQ-ACK) information corresponding to a first SPS PDSCH associated with a downlink SPS resource with a lowest number configured by a higher layer signaling, in case that the first SPS PDSCH associated with the downlink SPS resource with the lowest number at least partially overlaps with any other SPS PDSCH.
8. The method of claim 7 , wherein the HARQ-ACK information is received on a physical uplink control channel (PUCCH).
9. The method of claim 7 , further comprising:
transmitting, to the terminal, configurations for the plurality of downlink SPS resources; and
transmitting, to the terminal, first downlink control information (DCI) including a HARQ process number field,
wherein at least two configurations are to be released among the configurations for the plurality of downlink SPS resources based on the first DCI, a value of the HARQ process number field in the first DCI corresponding to the at least two configurations to be released.
10. The method of claim 9 , further comprising:
transmitting, to the terminal, information related to release of single or multiple configurations,
wherein in case that the information is transmitted, the value of the HARQ process number field indicates to release the at least two configurations corresponding to the value.
11. The method of claim 9 , further comprising:
transmitting, to the terminal, second DCI including the HARQ process number field and a redundancy version field,
wherein a configuration with an identifier is activated based on a value of the redundancy version field, the identifier having a same value as a value of the HARQ process number field in the second DCI.
12. A terminal in a wireless communication system, the terminal comprising:
a transceiver configured to transmit and receive a signal; and
a controller configured to:
identify a plurality of downlink semi-persistent scheduling (SPS) resources,
receive one or more SPS physical downlink shared channels (PDSCHs) based on the plurality of downlink SPS resources, and
report hybrid automatic repeat request-Acknowledgement (HARQ-ACK) information corresponding to a first SPS PDSCH associated with a downlink SPS resource with a lowest number configured by a higher layer signaling, in case that the first SPS PDSCH associated with the downlink SPS resource with the lowest number at least partially overlaps with any other SPS PDSCH.
13. The terminal of claim 12 , wherein the controller is further configured to:
receive, from a base station, configurations for the plurality of downlink SPS resources,
receive, from the base station, first downlink control information (DCI) including a HARQ process number field,
identify at least two configurations to be released among the configurations for the plurality of downlink SPS resources based on the first DCI, a value of the HARQ process number field in the first DCI corresponding to the at least two configurations to be released, and
release the at least two configurations, and
wherein the HARQ-ACK information is transmitted on a physical uplink control channel (PUCCH).
14. The terminal of claim 13 , wherein the controller is further configured to:
identify whether information related to release of single or multiple configurations is configured,
wherein in case that the information is configured, the value of the HARQ process number field indicates to release the at least two configurations corresponding to the value, and
wherein in case that the information is not configured, the value of the HARQ process number field indicates a release for a corresponding configuration with an identifier which is a same value as the value of the HARQ process number field.
15. The terminal of claim 13 , wherein the controller is further configured to:
receive, from the base station, second DCI including the HARQ process number field and a redundancy version field, and
activate a configuration with an identifier having a same value as a value of the HARQ process number field in the second DCI, based on a value of the redundancy version field.
16. A base station in a wireless communication system, the base station comprising:
a transceiver configured to transmit and receive a signal; and
a controller configured to:
identify a plurality of downlink semi-persistent scheduling (SPS) resources,
transmit, to a terminal, one or more SPS physical downlink shared channels (PDSCHs) based on the plurality of downlink SPS resources, and
receive, from the terminal, hybrid automatic repeat request-Acknowledgement (HARQ-ACK) information corresponding to a first SPS PDSCH associated with a downlink SPS resource with a lowest number configured by a higher layer signaling, in case that the first SPS PDSCH associated with the downlink SPS resource with the lowest number at least partially overlaps with any other SPS PDSCH.
17. The base station of claim 16 , wherein the controller is further configured to:
transmit, to the terminal, configurations for the plurality of downlink SPS resources, and
transmit, to the terminal, first downlink control information (DCI) including a HARQ process number field,
wherein at least two configurations are to be released among the configurations for the plurality of downlink SPS resources based on the first DCI, a value of the HARQ process number field in the first DCI corresponding to the at least two configurations to be released, and
wherein the HARQ-ACK information is received on a physical uplink control channel (PUCCH).
18. The base station of claim 17 ,
wherein the controller is further configured to transmit, to the terminal, information related to release of single or multiple configurations, and
wherein in case that the information is transmitted, the value of the HARQ process number field indicates to release the at least two configurations corresponding to the value.
19. The base station of claim 17 ,
wherein the controller is further configured to transmit, to the terminal, second DCI including the HARQ process number field and a redundancy version field, and
wherein a configuration with an identifier is activated based on a value of the redundancy version field, the identifier having a same value as a value of the HARQ process number field in the second DCI.
20. The base station of claim 17 ,
wherein the first DCI includes a redundancy version field, a modulation and coding scheme field, and a frequency domain resource assignment field, and
wherein the at least two configurations are released based on a value of the redundancy version field, a value of the modulation and coding scheme field, and a value of the frequency domain resource assignment field.