Method for signal transmission in wireless communication system and device therefor
The present invention relates to a method by which a terminal transmits a signal in a wireless communication system supporting multiple-input multiple-output (MIMO), and to a device. Particularly, the method comprises the steps of: transmitting a scheduling request to a base station by using a scheduling request beam resource, and receiving, from the base station, a confirm message corresponding to the scheduling request, wherein the confirm message includes an indication determined according to the scheduling request beam resource and the best downlink beam preset to a terminal.
1. A method of transmitting a signal by a user equipment (UE) in a wireless communication system supporting Multiple Input Multiple Output (MIMO), the method comprising:
transmitting a scheduling request to a base station using a scheduling request beam resource associated with a best downlink beam configured for the UE; and
receiving a confirmation message in response to the scheduling request from the base station,
wherein the confirmation message includes an indication determined according to the scheduling request beam resource and the best downlink beam configured for the UE, and
wherein the scheduling request includes index information including an index difference between the best downlink beam and a beam to be changed.
2. The method of claim 1 , wherein the scheduling request beam resource comprises a resource mapped to one of a plurality of downlink beams transmitted by the base station.
3. The method of claim 1 , wherein the scheduling request comprises at least one of a downlink beam change for the base station, a reference signal transmission request for measuring a downlink beam of the base station, and a resource allocation request for data transmission.
4. The method of claim 1 , wherein when the scheduling request beam resource and the best downlink beam configured for the UE are different from each other, the indication indicates that the downlink beam is changed to a downlink beam associated with the scheduling request beam resource by the base station.
5. The method of claim 4 , wherein the indication indicates that the downlink beam is changed to the downlink beam associated with the scheduling request beam resource is scheduled to be executed after a prescribed time.
6. The method of claim 1 , wherein when a scheduling request including a reference signal request is transmitted to the base station using a scheduling request beam resource different from the best downlink beam configured for the UE, the indication in the confirmation message indicates a change to a downlink beam associated with the scheduling request beam resource and a reference signal for the downlink beam to be changed.
7. The method of claim 1 , wherein when a scheduling request including a resource allocation for data transmission is transmitted to the base station using a scheduling request beam resource different from the best downlink beam configured for the UE, the indication in the confirmation message indicates a change to a downlink beam associated with the scheduling request beam resource and the resource allocation for the data transmission for the downlink beam to be changed.
8. The method of claim 1 , wherein the scheduling request beam resource is associated with the best downlink beam and at least one downlink beam adjacent to the best downlink beam.
9. The method of claim 8 , wherein the number of the at least one downlink beam adjacent to the best downlink beam is indicated by the base station.
10. A user equipment (UE) in a wireless communication system supporting Multiple Input Multiple Output (MIMO), the UE comprising:
a radio frequency unit; and
a processor configured to transmit a scheduling request to a base station using a scheduling request beam resource associated with a best downlink beam configured for the UE, and receive a confirmation message in response to the scheduling request from the base station,
wherein the confirmation message includes an indication determined according to the scheduling request beam resource and the best downlink beam configured for the UE, and
wherein the scheduling request includes index information including an index difference between the best downlink beam and a beam to be changed.