Method and apparatus for selecting carrier
Provided are a method for a user equipment (UE) to transmit a medium access control protocol data unit (MAC PDU) in a wireless communication system, and an apparatus supporting the same. The method may include: receiving information on priorities of semi persistent scheduling (SPS) configurations, from a base station; selecting a first carrier among the multiple carriers, based on the information on priorities of the SPS configurations; allocating a resource of the selected first carrier to a logical channel with the highest priority; and transmitting the MAC PDU, by using the resource of the selected first carrier.
1. A method for transmitting, by a user equipment (UE), a medium access control protocol data unit (MAC PDU) in a wireless communication system, the method comprising:
receiving information regarding first semi persistent scheduling (SPS) configuration and information regarding second SPS configuration, from a base station, wherein a first resource of the first SPS configuration and a second resource of the second SPS configuration are overlapped in a first time;
activating the first SPS configuration and the second SPS configuration;
allocating the first resource of the first SPS configuration to a first logical channel with a first priority in logical channel prioritization;
allocating the second resource of the second SPS configuration to a second logical channel with a second priority in the logical channel prioritization;
based on (i) the first resource and the second resource that are overlapped in the first time and (ii) the first priority that is higher than the second priority, selecting the first SPS configuration in the first time; and
transmitting a MAC PDU related to the first logical channel in the first time, based on the first resource of the first SPS configuration,
wherein transmission is not performed based on the second resource of the second SPS configuration not selected in the first time.
2. The method of claim 1 , wherein a third resource of the first SPS configuration and a fourth resource of the second SPS configuration are overlapped in a second time.
3. The method of claim 2 , further comprising:
allocating the third resource of the first SPS configuration to a third logical channel with a third priority in the logical channel prioritization; and
allocating the fourth resource of the second SPS configuration to a fourth logical channel with a fourth priority in the logical channel prioritization.
4. The method of claim 3 , further comprising:
based on (i) the third resource and the fourth resource that are overlapped in the second time and (ii) the fourth priority that is higher than the third priority, selecting the second SPS configuration in the second time.
5. The method of claim 4 , further comprising:
transmitting a MAC PDU related to the fourth logical channel in the second time, based on the fourth resource of the second SPS configuration,
wherein transmission is not performed based on the third resource of the first SPS configuration not selected in the second time.
6. 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.
7. A user equipment (UE) configured to transmit a medium access control protocol data unit (MAC PDU) in a wireless communication network, the UE comprising:
a memory storing instructions;
a transceiver; and
a processor, connected to the memory and the transceiver, configured to control the UE to perform operations based on execution of the instructions in the memory, the operations comprising:
receiving, via the transceiver, information regarding first semi persistent scheduling (SPS) configuration and information regarding second SPS configuration, from a base station, wherein a first resource of the first SPS configuration and a second resource of the second SPS configuration are overlapped in a first time;
activating the first SPS configuration and the second SPS configuration;
allocating the first resource of the first SPS configuration to a first logical channel with a first priority in logical channel prioritization;
allocating the second resource of the second SPS configuration to a second logical channel with a second priority in the logical channel prioritization;
based on (i) the first resource and the second resource that are overlapped in the first time and (ii) the first priority that is higher than the second priority, selecting the first SPS configuration in the first time; and
transmitting, via the transceiver, a MAC PDU related to the first logical channel in the first time, based on the first resource of the first SPS configuration,
wherein transmission is not performed based on the second resource of the second SPS configuration not selected in the first time.
8. The UE of claim 7 , wherein a third resource of the first SPS configuration and a fourth resource of the second SPS configuration are overlapped in a second time.
9. The UE of claim 8 , wherein the operations further comprise:
allocating the third resource of the first SPS configuration to a third logical channel with a third priority in the logical channel prioritization; and
allocating the fourth resource of the second SPS configuration to a fourth logical channel with a fourth priority in the logical channel prioritization.
10. The UE of claim 9 , wherein the operations further comprise:
based on (i) the third resource and the fourth resource that are overlapped in the second time and (ii) the fourth priority that is higher than the third priority, selecting the second SPS configuration in the second time.
11. The UE of claim 10 , wherein the operations further comprise:
transmitting, via the transceiver, a MAC PDU related to the fourth logical channel in the second time, based on the fourth resource of the second SPS configuration,
wherein transmission is not performed based on the third resource of the first SPS configuration not selected in the second time.