Method for identifying a resource for repetitive transmission
The present disclosure relates to 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). The present disclosure 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. The present disclosure relates to a method and apparatus for transmitting uplink (UL) data in a wireless communication system. A method includes receiving configuration information for a grant-free UL transmission, the configuration information including information on a number of repetitive transmissions and period information; identifying a plurality of resources for the repetitive transmissions in a period based on the configuration information; identifying a resource for an initial transmission of the UL data based on a value of a redundancy version (RV) associated with the resource; and performing the initial transmission of the UL data on the identified resource. A number of former resources F are capable of being used for the initial transmission of the UL data among the plurality of resources for the repetitive transmissions. The number of the former resources F is determined based on the number of the repetitive transmissions.
1. A method performed by a terminal in a wireless communication system, the method comprising:
identifying information on a number of repetitive transmissions K, redundancy version information, and period information for a grant-free uplink (UL) transmission;
identifying a resource among resources for the number of repetitive transmissions as an initial transmission; and
performing the initial transmission of UL data on the identified resource,
wherein the identified resource is one among first F resources, except for a predetermined number of resources, where F is a natural number,
wherein the first F resources and the predetermined number of resources are associated with redundancy version (RV) 0, and
wherein a number of the first F resources and the predetermined number of resources is determined based on the number of the repetitive transmissions.
2. The method of claim 1 , wherein the redundancy version information indicates an RV sequence 0-0-0-0.
3. The method of claim 1 , wherein the number of repetitive transmissions K is one of 2, 4, or 8.
4. The method of claim 1 , further comprising performing a repetitive transmission of the UL data in a period, on at least one resource for the number of repetitive transmissions except for the identified resource,
wherein the initial transmission and the repeated transmission of the UL data are associated with a same hybrid automatic repeat request (HARQ) process identifier (ID).
5. The method of claim 1 , further comprising receiving a UL grant for activating the grant-free UL transmission,
wherein the UL grant is associated with a radio network temporary identifier (RNTI) for a grant-free transmission.
6. The method of claim 1 , further comprising identifying offset information for the grant-free UL transmission,
wherein the offset information is related to a system frame number.
7. A method performed by a base station in a wireless communication system, the method comprising:
transmitting information on a number of repetitive transmissions K, redundancy version information, and period information for a grant-free uplink (UL) transmission; and
receiving an initial transmission of UL data on a resource among resources for the number of repetitive transmissions,
wherein the resource is one among first F resources, except for a predetermined number of resources, where F is a natural number,
wherein the first F resources and the predetermined number of resources are associated with redundancy version (RV) 0, and
wherein a number of the first F resources and the predetermined number of resources is determined based on the number of the repetitive transmissions.
8. The method of claim 7 , wherein the redundancy version information indicates an RV sequence 0-0-0-0.
9. The method of claim 7 , wherein the number of repetitive transmissions K is one of 2, 4, or 8.
10. The method of claim 7 , further comprising receiving a repetitive transmission of the UL data in a period, on at least one resource for the number of repetitive transmissions except for the identified resource,
wherein the initial transmission and the repeated transmission of the UL data are associated with a same hybrid automatic repeat request (HARQ) process identifier (ID).
11. The method of claim 7 , further comprising transmitting a UL grant for activating the grant-free UL transmission,
wherein the UL grant is associated with a radio network temporary identifier (RNTI) for a grant-free transmission.
12. The method of claim 7 , further comprising transmitting offset information for the grant-free UL transmission,
wherein the offset information is related to a system frame number.
13. A terminal in a wireless communication system, the terminal comprising:
a transceiver; and
a controller coupled with the transceiver and configured to:
identify information on a number of repetitive transmissions K, redundancy version information, and period information for a grant-free uplink (UL) transmission,
identify a resource among resources for the number of repetitive transmissions as an initial transmission, and
perform the initial transmission of UL data on the identified resource,
wherein the identified resource is one among first F resources, except for a predetermined number of resources, where F is a natural number,
wherein the first F resources and the predetermined number of resources are associated with redundancy version (RV) 0, and
wherein a number of the first F resources and the predetermined number of resources is determined based on the number of the repetitive transmissions.
14. The terminal of claim 13 , wherein the redundancy version information indicates an RV sequence 0-0-0-0.
15. The terminal of claim 13 , wherein the number of repetitive transmissions K is one of 2, 4, or 8.
16. The terminal of claim 13 , wherein the controller is further configured to perform a repetitive transmission of the UL data in a period, on at least one resource for the number of repetitive transmissions except for the identified resource, and
wherein the initial transmission and the repeated transmission of the UL data are associated with a same hybrid automatic repeat request (HARQ) process identifier (ID).
17. The terminal of claim 13 , wherein the controller is further configured to receive a UL grant for activating the grant-free UL transmission, and
wherein the UL grant is associated with a radio network temporary identifier (RNTI) for a grant-free transmission.
18. The terminal of claim 13 , wherein the controller is further configured to identify offset information for the grant-free UL transmission, and
wherein the offset information is related to a system frame number.
19. A base station in a wireless communication system, the base station comprising:
a transceiver; and
a controller coupled with the transceiver and configured to:
transmit information on a number of repetitive transmissions K, redundancy version information, and period information for a grant-free uplink (UL) transmission, and
receive an initial transmission of UL data on a resource among resources for the number of repetitive transmissions,
wherein the resource is one among first F resources, except for a predetermined number of resources, where F is a natural number,
wherein the first F resources and the predetermined number of resources are associated with redundancy version (RV) 0, and
wherein a number of the first F resources and the predetermined number of resources is determined based on the number of the repetitive transmissions.
20. The base station of claim 19 , wherein the redundancy version information indicates an RV sequence 0-0-0-0.
21. The base station of claim 19 , wherein the number of repetitive transmissions K is one of 2, 4, or 8.
22. The base station of claim 19 , wherein the controller is further configured to receive a repetitive transmission of the UL data in a period, on at least one resource for the number of repetitive transmissions except for the identified resource, and
wherein the initial transmission and the repeated transmission of the UL data are associated with a same hybrid automatic repeat request (HARQ) process identifier (ID).
23. The base station of claim 19 , wherein the controller is further configured to transmit a UL grant for activating the grant-free UL transmission, and
wherein the UL grant is associated with a radio network temporary identifier (RNTI) for a grant-free transmission.
24. The base station of claim 19 , wherein the controller is further configured to transmit offset information for the grant-free UL transmission, and
wherein the offset information is related to a system frame number.