A method performed by a user equipment, UE, for transmitting a Configured Grant, CG, Physical Uplink Shared Channel, PUSCH, the method comprising: receiving a CG configuration and a plurality of Synchronization Signal Blocks, SSBs, each of the plurality of SSBs corresponding to an SSB index in a plurality of SSB indexes; determining a mapping of the plurality of SSB indexes to PUSCH resources for the plurality of SSBs, each PUSCH resource being configured by the received CG configuration; identifying an SSB in the plurality of SSBs based on measured Reference Signal Received Powers, RSRPs; identifying a PUSCH resource in the PUSCH resources based on the identified SSB and the mapping of the plurality of SSB indexes to the PUSCH resources; and transmitting a PUSCH on the identified PUSCH resource, wherein: the mapping of the plurality of SSB indexes to the PUSCH resources is determined according to a first increasing order of DeModulation Reference Signal, DMRS, resource indexes and a second increasing order of CG period indexes within an association period, the association period corresponds to a time duration in which each of the plurality of SSB indexes is mapped to a PUSCH resource configured by the CG configuration, a periodicity of the CG configuration is 8 milliseconds, the association period is determined based on the least common multiple, LCM, of the periodicity of the CG configuration and a periodicity of the plurality of SSBs, a plurality of association periods, including the association period and a second association period, refers to an association pattern period for periodically transmitting the PUSCH, the association period includes an invalid PUSCH Occasion, PO, to which no SSB is mapped, and the association period and the second association period have different lengths. receiving a CG configuration and a plurality of Synchronization Signal Blocks, SSBs, each of the plurality of SSBs corresponding to an SSB index in a plurality of SSB indexes; determining a mapping of the plurality of SSB indexes to PUSCH resources for the plurality of SSBs, each PUSCH resource being configured by the received CG configuration; identifying an SSB in the plurality of SSBs based on measured Reference Signal Received Powers, RSRPs; identifying a PUSCH resource in the PUSCH resources based on the identified SSB and the mapping of the plurality of SSB indexes to the PUSCH resources; and transmitting a PUSCH on the identified PUSCH resource, wherein: the mapping of the plurality of SSB indexes to the PUSCH resources is determined according to a first increasing order of DeModulation Reference Signal, DMRS, resource indexes and a second increasing order of CG period indexes within an association period, the association period corresponds to a time duration in which each of the plurality of SSB indexes is mapped to a PUSCH resource configured by the CG configuration, a periodicity of the CG configuration is 8 milliseconds, the association period is determined based on the least common multiple, LCM, of the periodicity of the CG configuration and a periodicity of the plurality of SSBs, a plurality of association periods, including the association period and a second association period, refers to an association pattern period for periodically transmitting the PUSCH, the association period includes an invalid PUSCH Occasion, PO, to which no SSB is mapped, and the association period and the second association period have different lengths. the mapping of the plurality of SSB indexes to the PUSCH resources is determined according to a first increasing order of DeModulation Reference Signal, DMRS, resource indexes and a second increasing order of CG period indexes within an association period, the association period corresponds to a time duration in which each of the plurality of SSB indexes is mapped to a PUSCH resource configured by the CG configuration, a periodicity of the CG configuration is 8 milliseconds, the association period is determined based on the least common multiple, LCM, of the periodicity of the CG configuration and a periodicity of the plurality of SSBs, a plurality of association periods, including the association period and a second association period, refers to an association pattern period for periodically transmitting the PUSCH, the association period includes an invalid PUSCH Occasion, PO, to which no SSB is mapped, and the association period and the second association period have different lengths.