Method for controlling transmission power by terminal in narrowband wireless communication system, and terminal
A method for controlling, by a user equipment (UE), a transmit power in a narrowband (NB) wireless communication system is disclosed. The method includes receiving, from a base station, a preconfigured uplink (UL) resource (PUR) configuration, transmitting, to the base station, uplink data on the PUR, and receiving, from the base station, feedback information for the uplink data. A transmit power of the uplink data is controlled based on a number of receptions of the feedback information.
1. A method for controlling, by a user equipment (UE), a transmit power in a narrowband (NB) wireless communication system, the method comprising:
receiving, from a base station, information related to Discontinuous Reception, DRX, using Radio Resource Control, RRC, signaling,
receiving, from the base station, a paging message based on the information related to DRX,
transmitting, to the base station, a Physical Random Access Channel, PRACH, preamble based on the paging message,
receiving, from the base station, a random access response including Uplink, UL, grant based on the PRACH preamble,
transmitting, to the base station, message 3 based on the UL grant,
receiving, from the base station, a message for contention resolution based on the message 3,
receiving, from the base station, a preconfigured uplink (UL) resource (PUR) configuration;
transmitting, to the base station, uplink data on the PUR; and
receiving, from the base station, feedback information for the uplink data,
wherein the feedback information is configured to be received on an NPDCCH after a specific time has passed from the PUR transmission.
2. The method of claim 1 , wherein a transmit power of the uplink data is controlled based on a number of receptions of the feedback information.
3. The method of claim 2 , wherein a ramping interval of the transmit power is indicated from the base station.
4. The method of claim 2 , wherein the UE transmits the uplink data in an idle mode,
wherein the transmit power is a transmit power used in a connected mode with the base station before entering the idle mode.
5. The method of claim 2 , wherein a specific offset value is added to a current transmit power.
6. The method of claim 2 , wherein the transmit power of the uplink data is controlled based on a number of transmissions of the uplink data.
7. A user equipment (UE) controlling a transmit power in a narrowband (NB) wireless communication system, the UE comprising:
a radio frequency (RF) module configured to transmit and receive a radio signal; and
a processor functionally connected to the RF module,
wherein the processor is configured to:
receive, from a base station, information related to Discontinuous Reception, DRX, using Radio Resource Control, RRC, signaling,
receive, from the base station, a paging message based on the information related to DRX,
transmit, to the base station, a Physical Random Access Channel, PRACH, preamble based on the paging message,
receive, from the base station, a random access response including Uplink, UL, grant based on the PRACH preamble,
transmit, to the base station, message 3 based on the UL grant,
receive, from the base station, a message for contention resolution based on the message 3,
receive, from the base station, a preconfigured uplink (UL) resource (PUR) configuration;
transmit, to the base station, uplink data on the PUR; and
receive, from the base station, feedback information for the uplink data,
wherein the feedback information is configured to be received on an NPDCCH after a specific time has passed from the PUR transmission.
8. The UE of claim 7 , wherein a transmit power of the uplink data is controlled based on a number of receptions of the feedback information.
9. The UE of claim 8 , wherein the processor receives, from the base station, an indication of a ramping interval of the transmit power.
10. The UE of claim 8 , wherein the processor transmits the uplink data in an idle mode,
wherein the transmit power is a transmit power used in a connected mode with the base station before entering the idle mode.
11. The UE of claim 8 , wherein the processor adds a specific offset value to a current transmit power.
12. The UE of claim 8 , wherein the processor controls the transmit power of the uplink data based on a number of transmissions of the uplink data.
13. A method for controlling, by a base station, a transmit power in a narrowband (NB) wireless communication system, the method comprising:
transmitting, to a user equipment, UE, information related to Discontinuous Reception, DRX, using Radio Resource Control, RRC, signaling,
transmitting, to the UE, a paging message based on the information related to DRX,
receiving, from the UE, a Physical Random Access Channel, PRACH, preamble based on the paging message,
transmitting, to the UE, a random access response including Uplink, UL, grant based on the PRACH preamble,
receiving, from the UE, message 3 based on the UL grant,
transmitting, to the UE, a message for contention resolution based on the message 3,
transmitting, to the UE, a preconfigured uplink (UL) resource (PUR) configuration;
receiving, from the UE, uplink data on the PUR; and
transmitting, to the UE, feedback information for the uplink data,
wherein the feedback information is configured to be transmitted on an NPDCCH after a specific time has passed from the PUR reception.
14. The method of claim 13 , wherein a transmit power of the uplink data is controlled by the UE based on a number of transmissions of the feedback information by the base station.
15. The method of claim 14 , wherein a ramping interval of a transmit power of the UE is indicated from the base station.