Method and apparatus for performing uplink transmission of configured grant based physical uplink shared channel in mobile wireless communication system

1 . A method by a terminal, the method comprising:

receiving, by the terminal from a base station, a first radio resource control (RRC) message, wherein the first RRC message comprises:

a first set of parameters related to a first period; and

a second set of parameters related to configured grant; and

performing, by the terminal and based on the first set of parameters and the second set of parameters, Configured Grant (CG)-based Physical Uplink Shared Channel (PUSCH) transmission,

wherein the terminal performs CG-based PUSCH transmission for a first CG during the first period in case that CG-based PUSCH transmission for the first CG during the first period is configured,

wherein the terminal does not perform CG-based PUSCH transmission for a second CG during the first period in case that CG-based PUSCH transmission for the second CG during the first period is not configured, and

wherein the first period has a static length and occurs periodically.

2 . The method of claim 1 ,

wherein CG-based PUSCH transmission for the first CG during the first period is configured in case that:

a specific field is present in the first RRC message; and

the specific field comprises a parameter indicating the first CG.

3 . The method of claim 1 ,

wherein CG-based PUSCH transmission for the second CG during the first period is not configured in case that:

a specific field is present in the first RRC message; and

the specific field does not comprise a parameter indicating the second CG.

4 . The method of claim 1 , further comprising:

receiving, by the terminal from the base station, a second RRC message, wherein the second RRC message comprises a third set of parameters related to a second period; and

performing, by the terminal and based on the first set of parameters, the second set of parameters, and the third set of parameters, CG-based PUSCH transmission,

wherein the terminal performs, during the second period, CG-based PUSCH transmission for the first CG and CG-based PUSCH transmission for the second CG, and

wherein the second period has a variable length and occurs periodically.

5 . The method of claim 1 ,

wherein the first set of parameters comprises:

a parameter indicating a length of the first period; and

a parameter indicating a cycle of the first period.

6 . The method of claim 1 ,

wherein the second set of parameters comprises:

a first subset of parameters related to a frequency resource; and

a second subset of parameters related to a time resource, and

wherein two or more configured grants are configured based on the first subset of parameters and the second subset of parameters.

7 . The method of claim 6 ,

wherein the first subset of parameters comprises a parameter related to a frequency resource, and

wherein the frequency resource is applied to the two or more configured grants.

8 . The method of claim 6 ,

wherein a time resource of each of the two or more configured grants is determined based on the second subset of parameters.

9 . The method of claim 4 ,

wherein the third set of parameters comprises:

a parameter indicating a length of a first timer;

a parameter indicating a length of a second timer; and

a parameter indicating a cycle of the second period.

10 . The method of claim 9 ,

wherein the second period is while the first timer or the second timer or both timers are running.

11 . The method of claim 10 ,

wherein the first timer starts at a first subframe that is determined based on an equation.

12 . The method of claim 11 ,

wherein the equation comprises a first variable related to a System Frame Number (SFN).

13 . The method of claim 9 ,

wherein the second timer starts in case that new transmission is scheduled.

14 . The method of claim 12 ,

wherein the equation further comprises a second variable related to a SFN.

15 . The method of claim 12 ,

wherein the first variable increments every radio frame.

16 . The method of claim 14 ,

wherein the second variable increments every 1024 radio frames.

17 . The method of claim 4 , further comprising:

receiving, by the terminal from the base station, a third RRC message, wherein the third RRC message instructs handover from a first cell to a second cell;

receiving, by the terminal from the base station, system information in the second cell;

determining, by the terminal, a first subframe; and

starting, by the terminal and based on the first subframe, the first timer.

18 . The method of claim 17 ,

wherein the first subframe is determined based on the first variable and the second variable in case that:

the second RRC message comprises the third set of parameters; and

the third RRC message comprises the parameter indicating a non-integer cycle.

19 . The method of claim 17 ,

wherein the first subframe is determined based on the first variable and not based on the second variable in case that:

the second RRC message comprises the third set of parameters; and

the third RRC message does not comprise the parameter indicating a non-integer cycle.

20 . A terminal comprising:

a transceiver,

a memory, and

a controller coupled to the transceiver and the memory, wherein the controller is configured to cause the terminal to:

receive, from a base station, a first radio resource control (RRC) message, wherein the first RRC message comprises:

a first set of parameters related to a first period; and

a second set of parameters related to configured grant; and

perform, based on the first set of parameters and the second set of parameters, Configured Grant (CG)-based Physical Uplink Shared Channel (PUSCH) transmission,

wherein the terminal performs CG-based PUSCH transmission for a first CG during the first period in case that CG-based PUSCH transmission for the first CG during the first period is configured,

wherein the terminal does not perform CG-based PUSCH transmission for a second CG during the first period in case that CG-based PUSCH transmission for the second CG during the first period is not configured, and

wherein the first period has a static length and occurs periodically.