Method for performing a LCP procedure in wireless communication system and a device therefor

1. A method for a User Equipment (UE) operating in a wireless communication system, the method comprising:

receiving multiple uplink (UL) grants, in a state that the UE is configured to one or more logical channels, each of the one or more logical channels being associated with a respective numerology set;

wherein each of the multiple UL grants includes information for an associated numerology set; and

performing a logical channel prioritization (LCP) procedure using the multiple UL grants in ascending order of a number of logical channels associated with a numerology set for each UL grant,

wherein based on the UE counting the number of logical channels associated with the numerology set of each UL grant, the UE only counts logical channels having data available for transmission.

2. The method according to claim 1 , wherein the UE generates a Medium Access Control (MAC) Protocol Data Unit (PDU) for a UL grant of which a numerology set is associated with a smaller number of logical channels prior to generating a MAC PDU for a UL grant of which a numerology set is associated with a larger number of logical channels during the LCP procedure.

3. The method according to claim 2 , further comprising:

transmitting multiple MAC PDUs using the multiple UL grants,

wherein a MAC PDU including data from logical channels associated with a certain numerology set is transmitted using an uplink grant associated with the certain numerology set.

4. The method according to claim 1 , wherein if the number of logical channels associated with the numerology set of two or more different UL grants are same, the UE processes the UL grants in random order.

5. The method according to claim 1 , wherein the multiple UL grant are received in a same time, or the multiple UL grant on which MAC PDUs are transmitted in a same time.

6. A User Equipment (UE) for operating in a wireless communication system, the UE comprising:

a Radio Frequency (RF) module; and

a processor operably coupled with the RF module and configured to:

receive multiple uplink (UL) grants, in a state that the UE is configured to one or more logical channels, each of the one or more logical channels being associated with a respective numerology set;

wherein each of the multiple UL grants includes information for an associated numerology set; and

perform a logical channel prioritization (LCP) procedure using the multiple UL grants in ascending order of a number of logical channels associated with a numerology set for each UL grant,

wherein based on the UE counting the number of logical channels associated with the numerology set of each UL grant, the UE only counts logical channels having data available for transmission.

7. The UE according to claim 6 , wherein the UE generates a Medium Access Control (MAC) Protocol Data Unit (PDU) for a UL grant of which a numerology set is associated with a smaller number of logical channels prior to generating a MAC PDU for a UL grant of which a numerology set is associated with a larger number of logical channels during the LCP procedure.

8. The UE according to claim 7 , wherein the processor is further configured to:

transmit multiple MAC PDUs using the multiple UL grants,

wherein a MAC PDU including data from logical channels associated with a certain numerology set is transmitted using an uplink grant associated with the certain numerology set.

9. The UE according to claim 6 , wherein if the number of logical channels associated with the numerology set of two or more different UL grants are same, the UE processes the UL grants in random order.

10. The UE according to claim 6 , wherein the multiple UL grant are received in a same time, or the multiple UL grant on which MAC PDUs are transmitted in a same time.

11. The UE according to claim 6 , wherein the UE is capable of communicating with at least one of another UE, a UE related to an autonomous driving vehicle, a base station or a network.