Scheduling method and apparatus
View Patent ↗Within one carrier, a base station reserves a first resource area for a first TTI-based transmission in a unit of first TTI within a second TTI period longer than the first TTI, and schedules a first data channel to be transmitted on the basis of the first TTI, in the first resource area.
1. An operation method performed by a base station in a communication system, the operation method comprising:
determining a shift value of a subcarrier position for an uplink transmission;
generating information which indicates a frequency shift of subcarrier(s) for the uplink transmission based on the shift value; and
transmitting, to a user equipment (UE), the information,
wherein the frequency shift is applied to all of the subcarrier(s) for the uplink transmission.
2. The operation method of claim 1 , wherein the information is transmitted through a physical downlink shared channel (PDSCH).
3. The operation method of claim 1 , wherein the information is included in a higher layer message which is transmitted from the base station to the UE.
4. The operation method of claim 1 , wherein the shift value is a half of a subcarrier spacing which is applied to a carrier in which the uplink transmission is performed.
5. The operation method of claim 4 , wherein the subcarrier spacing is 15 kHz.
6. The operation method of claim 1 , wherein the shift value is 7.5 kHz.
7. The operation method of claim 1 , wherein, when the communication system is a new radio (NR) system, the shift value is an offset between a channel raster of the NR system and a channel raster of a long term evolution (LTE) system.
8. An operation method performed by a user equipment (UE) in a communication system, the operation method comprising:
receiving, from a base station, information which indicates a frequency shift of subcarrier(s) for an uplink transmission;
determining frequency locations of the subcarrier(s) used for the uplink transmission based on a shift value; and
performing the uplink transmission in the determined frequency locations,
wherein the frequency shift is applied to all of the subcarrier(s) for the uplink transmission.
9. The operation method of claim 8 , wherein the information is included in a system information message which is broadcasted from the base station before performing a random access procedure between the UE and the base station.
10. The operation method of claim 8 , wherein the information is received through a physical downlink shared channel (PDSCH).
11. The operation method of claim 8 , wherein the information is included in a higher layer message which is transmitted from the base station to the UE.
12. The operation method of claim 8 , wherein the shift value is a half of a subcarrier spacing which is applied to a carrier in which the uplink transmission is performed.
13. The operation method of claim 12 , wherein the subcarrier spacing is 15 kHz.
14. The operation method of claim 8 , wherein the shift value is 7.5 kHz.
15. The operation method of claim 8 , wherein, when the communication system is a new radio (NR) system, the shift value is an offset between a channel raster of the NR system and a channel raster of a long term evolution (LTE) system.