Method and apparatus for requesting scheduling in wireless communication system
Disclosed herein are a method and apparatus for requesting scheduling in a wireless communication system. More specifically, a method of requesting scheduling for transmitting uplink data in a wireless communication system may include transmitting, by user equipment (UE), a Scheduling Request (SR) of an SR type selected from multiple SR types to an eNB, receiving, by the UE, an uplink grant determined according to the selected SR type from the eNB, and transmitting, by the UE, uplink data to the eNB through a physical uplink shared channel (PUSCH) resource allocated by the uplink grant.
1. A method of requesting scheduling for transmission of uplink (UL) data in a wireless communication system, the method performed by a user equipment (UE) and comprising:
transmitting a Scheduling Request (SR) to an eNB through an SR resource selected from a plurality of SR resources corresponding to multiple SR types;
receiving an UL grant according to an SR type corresponding to the selected SR resource from the eNB; and
transmitting UL data to the eNB through a physical uplink shared channel (PUSCH) resource allocated by the UL grant.
2. The method of claim 1 , wherein at least an index of a physical uplink control channel (PUCCH) resource, an SR periodicity, or an SR subframe offset for sending the SR is configured differently according to each of the multiple SR types.
3. The method of claim 1 , wherein a size of the UL data is determined for each of the multiple SR types.
4. The method of claim 3 , wherein the PUSCH resource allocated by the UL grant is determined based on the size of the UL data according to the selected SR type.
5. The method of claim 3 , wherein a size of a soft buffer set by the eNB is determined based on the size of the UL data according to the selected SR type.
6. The method of claim 1 , wherein a resource allocation procedure for transmitting the UL data is determined according to the multiple SR types.
7. The method of claim 1 , further comprising receiving multiple SR configuration information from the eNB for configuring the multiple SR types.
8. The method of claim 7 , wherein the multiple SR configuration information includes at least information related an index of a PUCCH resource, an SR periodicity, or an SR subframe offset corresponding to each of the multiple SR types.
9. The method of claim 1 , further comprising:
receiving an UL grant from the eNB for sending a Buffer Status Report (BSR) if the SR is an SR for sending the BSR; and
transmitting the BSR to the eNB through a PUSCH resource allocated by the UL grant for transmitting the BSR.
10. A user equipment (UE) requesting scheduling for transmission of uplink (UL) data in a wireless communication system, the UE comprising:
a Radio Frequency (RF) unit configured to transmit and receive radio signals; and
a processor configured to:
control the RF unit to transmit a Scheduling Request (SR) to an eNB through an SR resource selected from a plurality of SR resources corresponding to multiple SR types,
control the RF unit to receive an UL grant according to an SR type corresponding to the selected SR resource from the eNB; and
control the RF unit to transmit UL data to the eNB through a physical uplink shared channel (PUSCH) resource allocated by the UL grant.
11. The UE of claim 10 , wherein at least an index of a physical uplink control channel (PUCCH) resource, an SR periodicity, or an SR subframe offset for sending the SR is configured differently according to each of the multiple SR types.
12. The UE of claim 10 , wherein a size of the UL data is determined for each of the multiple SR types.
13. The UE of claim 12 , wherein the PUSCH resource allocated by the UL grant is determined based on the size of the UL data according to the selected SR type.
14. The UE of claim 12 , wherein a size of a soft buffer set by the eNB is determined based on the size of the UL data according to the selected SR type.
15. The UE of claim 10 , wherein a resource allocation procedure for sending the UL data is determined according to the multiple SR types.
16. The UE of claim 10 , wherein the processor is further configured to control the RF unit to receive multiple SR configuration information from the eNB for configuring the multiple SR types.
17. The UE of claim 16 , wherein the multiple SR configuration information includes at least information related an index of a PUCCH resource, an SR periodicity, or an SR subframe offset corresponding to each of the multiple SR types.
18. The UE of claim 10 , wherein the processor is further configured to:
control the RF unit to receive an UL grant from the eNB for sending a Buffer Status Report (BSR) if the SR is an SR for sending the BSR; and
control the RF unit to transmit the BSR to the eNB through a PUSCH resource allocated by the UL grant for transmitting the BSR.