Receiving device, receiving method, and integrated circuit

Abstract

Position the reference signal appropriately. [Solution] The transmitting device comprises a control circuit that determines the arrangement of second reference signals in a second system based on the arrangement of first reference signals in a first system, and a transmitting circuit that transmits second reference signals based on the determined arrangement, wherein the control circuit changes the positions of the remaining reference signals when changing the position of at least one reference signal in a plurality of second reference signals.

Claims

1. A control circuit that determines the placement of demodulation reference signals (DMRS) in a PDSCH scheduled by PDSCH mapping type B in an NR (New Radio access technology) system, based on the placement of cell-specific reference signals (CRS) in an LTE system, A receiving circuit that receives the DMRS based on the determined arrangement, It is equipped with, If the duration of the PDSCH scheduled by the PDSCH mapping type B is a specific value, and the subcarrier interval is a specific value, and at least one symbol of the DMRS collides with a symbol of the CRS, then the positions of the at least one symbol of the DMRS and the remaining symbols of the DMRS are shifted back by one symbol. Receiving device.

2. The control circuit, if the content shown in the information satisfies certain conditions, determines the position of the DMRS to a symbol different from the symbol set on the receiving device. The receiving device according to claim 1.

3. The above condition does not depend on whether the symbols on which the CRS is placed overlap with the symbols set in the DMRS. The receiving device according to claim 2.

4. If the first symbol on which the CRS is located and the second symbol set for the DMRS overlap, the control circuit determines the position of the DMRS to be a third symbol different from the second symbol. The receiving device according to claim 1.

5. The control circuit determines whether the first symbol and the second symbol overlap based on the data allocation method including the DMRS and the arrangement of the CRS. The receiving device according to claim 4.

6. The control circuit determines the position of the DMRS to the third symbol if the content shown in the information satisfies certain conditions. The receiving device according to claim 4.

7. The above condition does not depend on whether the first symbol and the second symbol overlap. The receiving device according to claim 6.

8. If the position of at least one of the multiple DMRS reference signals is changed, the control circuit changes the positions of the remaining reference signals. The receiving device according to claim 1.

9. The control circuit determines the position of the DMRS to be a symbol different from the symbol set in the receiving device when the subcarrier interval set in the receiving device is a specific value. The receiving device according to claim 4.

10. The control circuit determines the position of the DMRS to a symbol different from the symbol set in the receiving device when the subcarrier interval set in the receiving device is 15 kHz. The receiving device according to claim 4.

11. The control circuit determines the position of the DMRS to be a symbol different from the symbol set in the receiving device when the duration of the PDSCH is a specific value. The receiving device according to claim 4.

12. The receiving device is Based on the arrangement of cell-specific reference signals (CRS) in an LTE system, the arrangement of demodulation reference signals (DMRS) in PDSCHs scheduled by PDSCH mapping type B in an NR (New Radio access technology) system is determined. Based on the determined arrangement, the DMRS is received, If the duration of the PDSCH scheduled by PDSCH mapping type B is a specific value, and the subcarrier interval is a specific value, and at least one symbol of the DMRS collides with a symbol of the CRS, then the positions of the at least one symbol of the DMRS and the remaining symbols of the DMRS are shifted back by one symbol. Reception method.

13. If the information provided satisfies certain conditions, the DMRS location is determined to be a symbol different from the symbol set on the receiving device. The receiving method according to claim 12.

14. The above condition does not depend on whether the symbols on which the CRS is placed overlap with the symbols set in the DMRS. The receiving method according to claim 13.

15. If the first symbol on which the CRS is placed and the second symbol set for the DMRS overlap, or if certain conditions are met, the position of the DMRS is determined to be a third symbol different from the second symbol. The receiving method according to claim 12.

16. A method for allocating data including the DMRS, and a method for determining whether the first symbol and the second symbol overlap based on the arrangement of the CRS. The receiving method according to claim 15.

17. If the information provided satisfies certain conditions, the location of the DMRS is determined to be the third symbol. The receiving method according to claim 15.

18. The above condition does not depend on whether the first symbol and the second symbol overlap. The receiving method according to claim 17.

19. If the position of at least one of the multiple DMRS reference signals is changed, the positions of the remaining reference signals are changed. The receiving method according to claim 12.

20. When the subcarrier interval set in the receiving device is a specific value, the position of the DMRS is determined to be a symbol different from the symbol set in the receiving device. The receiving method according to claim 15.

21. When the subcarrier interval set in the receiving device is 15 kHz, the position of the DMRS is determined to be a symbol different from the symbol set in the receiving device. The receiving method according to claim 15.

22. When the duration of the PDSCH is a specific value, the position of the DMRS is determined to be a symbol different from the symbol set in the receiving device. The receiving method according to claim 15.

23. Based on the arrangement of cell-specific reference signals (CRS) in an LTE system, a process is used to determine the arrangement of demodulation reference signals (DMRS) in a PDSCH scheduled by PDSCH mapping type B in an NR (New Radio access technology) system. The process of receiving the DMRS based on the determined arrangement, and the control of If the duration of the PDSCH scheduled by PDSCH mapping type B is a specific value, and the subcarrier interval is a specific value, and at least one symbol of the DMRS collides with a symbol of the CRS, then the positions of the at least one symbol of the DMRS and the remaining symbols of the DMRS are shifted back by one symbol. Integrated circuit.

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