Method and device for determining whether or not to suspend radio bearer
A method for a terminal to determine whether or not to suspend a radio bearer in a wireless communication system and a device supporting the method are provided. The method may comprise: a step of receiving, from a base station, a configuration indicating if data transmission through a certain radio bearer is permitted in an RRC_INACTIVE state; a step of entering the RRC_INACTIVE state; and a step of determining, based on the configuration, whether or not to suspend the certain radio bearer in the RRC_INACTIVE state.
1. A method in which a user equipment (UE) determines whether to suspend a radio bearer in a wireless communication system, the method comprising:
establishing a radio resource control (RRC) connection with a base station (BS);
receiving, from the BS, a RRC reconfiguration message that includes (i) first information related to whether or not data transmission is allowed in an RRC_INACTIVE state, and (ii) second information related to a priority threshold value;
transmitting, to the BS, a RRC reconfiguration complete message;
entering the RRC_INACTIVE state; and
determining, by UE, whether or not the radio bearer among a plurality of radio bearers is suspended in the RRC_INACTIVE state, based on (i) the first information and (ii) the second information,
wherein based on (i) the first information representing that the data transmission is allowed in the RRC_INACTIVE state and (ii) the radio bearer having a first priority value which is smaller than the priority threshold value, the UE determines that the radio bearer is not suspended among the plurality of radio bearers in the RRC_INACTIVE state,
wherein based on (i) the first information representing that the data transmission is allowed in the RRC_INACTIVE state and (ii) the radio bearer having a second priority value which is not smaller than the priority threshold value, the UE determines that the radio bearer is suspended among the plurality of radio bearers in the RRC_INACTIVE state, and
wherein based on the first information representing that the data transmission is not allowed in the RRC_INACTIVE state, the UE determines that the plurality of radio bearers are suspended in the RRC_INACTIVE state.
2. The method of claim 1 , wherein the first information is received per radio bearer.
3. The method of claim 1 , wherein the radio bearer includes at least one data radio bearer (DRB), and
wherein the radio bearer includes no signaling radio bearer (SRB).
4. The method of claim 1 , wherein the radio bearer includes at least one signaling radio bearer (SRB), and
wherein the radio bearer includes no data radio bearer (DRB).
5. 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.
6. A user equipment (UE) configured to determine whether to suspend a radio bearer in a wireless communication system, the UE comprising:
a memory;
a transceiver; and
a processor to connect the memory and the transceiver,
wherein the processor is configured to:
establish a radio resource control (RRC) connection with a base station (BS);
control the transceiver to receive, from the BS, a RRC reconfiguration message that includes (i) first information related to whether or not data transmission is allowed in an RRC_INACTIVE state, and (ii) second information related to a priority threshold value;
control the transceiver to transmit, to the BS, a RRC reconfiguration complete message;
enter the RRC_INACTIVE state; and
determine whether or not the radio bearer among a plurality of radio bearers is suspended in the RRC_INACTIVE state, based on (i) the first information and (ii) the second information,
wherein based on (i) the first information representing that the data transmission is allowed in the RRC_INACTIVE state and (ii) the radio bearer having a first priority value which is smaller than the priority threshold value, the UE determines that the radio bearer is not suspended among the plurality of radio bearers in the RRC_INACTIVE state,
wherein based on (i) the first information representing that the data transmission is allowed in the RRC_INACTIVE state and (ii) the radio bearer having a second priority value which is not smaller than the priority threshold value, the UE determines that the radio bearer is suspended among the plurality of radio bearers in the RRC_INACTIVE state, and
wherein based on the first information representing that the data transmission is not allowed in the RRC_INACTIVE state, the UE determines that the plurality of radio bearers are suspended in the RRC_INACTIVE state.