Method and device for terminal transmitting/receiving data
Provided are a method for a terminal receiving downlink data in a wireless communication system, and a device supporting same. The method may comprise the steps of: entering a radio resource control (RRC)_INACTIVE state; receiving a configuration associated with a first DRX cycle and a second DRX cycle; receiving a first paging message on the basis of the first DRX cycle; stopping the use of the first DRX cycle if the first paging message indicates that downlink data has been transmitted to the terminal without an RRC state transition; and receiving the downlink data from a base station in the RRC_INACTIVE state on the basis of the second DRX cycle.
1. A method for receiving, by a user equipment (UE), downlink data in a wireless communication system, the method comprising:
entering a radio resource control (RRC)_INACTIVE state;
receiving a configuration related to a first DRX cycle and a second DRX cycle;
receiving a first paging message based on the first DRX cycle;
stopping the use of the first DRX cycle if the first paging message indicates that downlink data is transmitted to the UE without an RRC state transition; and
receiving the downlink data from a base station in the RRC_INACTIVE state based on the second DRX cycle.
2. The method of claim 1 , further comprising:
initiating a timer if the downlink data is received, and
wherein if the timer expires, the use of the second DRX cycle is stopped, and the use of the first DRX cycle is resumed.
3. The method of claim 1 , further comprising:
receiving a second paging message based on the second DRX cycle, and
wherein if the second paging message does not indicate that downlink data is transmitted to the UE without an RRC state transition, the use of the second DRX cycle is stopped and the use of the first DRX cycle is resumed.
4. The method of claim 1 , further comprising:
receiving an indicator from the base station indicating that transmission of the downlink data is completed, and
wherein if the indicator is received, the use of the second DRX cycle is stopped, and the use of the first DRX cycle is resumed.
5. The method of claim 1 , further comprising:
receiving an indicator from the base station indicating to apply the first DRX cycle, and
wherein if the indicator is received, the use of the second DRX cycle is stopped, and the use of the first DRX cycle is resumed.
6. The method of claim 1 , wherein the first paging message is received in a paging occasion of the first DRX cycle and the downlink data is received in a paging occasion of the second DRX cycle.
7. The method of claim 6 , wherein the paging occasion of the first DRX cycle is calculated based on a first identifier (ID) of the UE, the paging occasion of the second DRX cycle is calculated based on a second identifier of the UE, and wherein the first identifier and the second identifier are differently allocated.
8. The method of claim 1 , wherein a period of the first DRX cycle is longer than a period of the second DRX cycle.
9. The method of claim 1 , wherein the UE communicates with at least one of a mobile terminal, a network or autonomous vehicles other than the UE.
10. A method for transmitting, by a user equipment (UE), uplink data in a wireless communication system, the method comprising:
entering a radio resource control (RRC)_INACTIVE state;
receiving a configuration related to a first DRX cycle and a second DRX cycle;
determining to transmit uplink data without an RRC state transition;
stopping the use of the first DRX cycle; and
transmitting the uplink data to a base station in the RRC_INACTIVE state based on the second DRX cycle.
11. The method of claim 10 , wherein if there is data available for transmission in an uplink buffer of the UE, the data available for transmission is transmitted to the base station in the RRC_INACTIVE state based on the second DRX cycle.
12. The method of claim 11 , wherein if there is no data available for transmission in an uplink buffer of the UE, the use of the second DRX cycle is stopped, and the use of the first DRX cycle is resumed.
13. The method of claim 10 , wherein if the UE initiates a random-access procedure, a random-access preamble is transmitted to the base station in the RRC_INACTIVE state based on the second DRX cycle.
14. The method of claim 13 , wherein if the random-access procedure is completed, the use of the second DRX cycle is stopped, and the use of the first DRX cycle is resumed.
15. The method of claim 10 , wherein a period of the first DRX cycle is longer than a period of the second DRX cycle.
16. A user equipment (UE) receiving downlink data in a wireless communication system, comprising:
a memory;
a transceiver; and
a processor coupled to the memory, and the transceiver, and
wherein the processor controls
entering a radio resource control (RRC)_INACTIVE state;
receiving a configuration related to a first DRX cycle and a second DRX cycle;
receiving a first paging message based on the first DRX cycle;
stopping the use of the first DRX cycle if the first paging message indicates that downlink data is transmitted to the UE without an RRC state transition; and
receiving the downlink data from a base station in the RRC_INACTIVE state based on the second DRX cycle.