TRANSMITTING NPUSCH AND WIRELESS DEVICE THEREOF

• US 20190158261A1
• Filed: 01/25/2019
• Published: 05/23/2019
• Est. Priority Date: 08/10/2017
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: HWANG, Seunggye, AHN, Joonkui, PARK, Changhwan, KIM, Seonwook
• Granted Patent: US 10,454,661 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 27/2666 Acquisition of further OFDM parameters, e.g. bandwidth, subcarrier spacing, or guard interval length
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access

Abstract

The disclosure of the present specification provides a method for performing a narrowband physical uplink shared channel (NPUSCH) transmission. The method may comprise: determining a start position of the NPUSCH transmission; performing the NPUSCH transmission, if the start position of the NPUSCH transmission is determined as a first of two contiguous subframes; and postponing the NPUSCH transmission, if the start position of the NPUSCH transmission is determined as a second of the two contiguous subframes. The two contiguous subframes may be configured as a time division duplex (TDD) uplink subframe based on at least one of TDD configurations 1 and 4. The two contiguous subframes may be defined for a subcarrier spacing of 3.75 kHz.

Claims

1. A method for performing a narrowband physical uplink shared channel (NPUSCH) transmission, the method comprising:

determining a start position of the NPUSCH transmission; and

postponing the NPUSCH transmission, (i) based on that the start position of the NPUSCH transmission is determined as a second of the two contiguous subframes,

performing the NPUSCH transmission, (ii) based on that the start position of the NPUSCH transmission is determined as a first of two contiguous subframes,

wherein the two contiguous subframes are configured as a time division duplex (TDD) uplink subframe based on at least one of TDD configurations 1 and 4,

wherein the two contiguous subframes are defined for a subcarrier spacing of 3.75 kHz.

2. The method of claim 1, wherein the NPUSCH transmission is performed based on that the two contiguous subframes are configured as valid subframes.

3. The method of claim 1, wherein the NPUSCH transmission is performed based on that the two contiguous subframes are not configured as invalid subframes.

4. The method of claim 1, wherein the postponing of the NPUSCH transmission is further performed, based on that at least one of the two contiguous subframes is configured as an invalid subframe.

5. The method of claim 1, wherein the postponing of the NPUSCH transmission is further performed, based on that the two contiguous subframes are overlapped with a narrowband physical random access channel (NPRACH) transmission.

6. The method of claim 1, wherein the NPUSCH transmission are mapped to a plurality of resource elements (REs) which are not used for a reference signal.

7. The method of claim 1, wherein based on that an invalid subframe is included in the two contiguous subframes used for the NPUSCH transmission, and based on that a repetition level of the NPUSCH transmission is smaller than or equal to a specific value, the NPUSCH transmission is postponed,

wherein based on that an invalid subframe is included in the two contiguous subframes used for the NPUSCH transmission, and based on that the repetition level of the NPUSCH transmission is greater than or equal to a specific value, the NPUSCH transmission is punctured.

8. The method of claim 1, wherein postponing of the NPUSCH transmission is performed based on that a number of valid subframes included in the two contiguous subframes is smaller than or equal to 1.

9. The method of claim 1, wherein based on that at least one of the two contiguous subframes includes an invalid subframe, the NPUSCH transmission mapped to a RE in the invalid subframe is punctured.

10. A wireless device for performing a narrowband physical uplink shared channel (NPUSCH) transmission, the wireless device comprising:

a transceiver; and

a processor configured to control the transceiver and determines a start position of the NPUSCH transmission,

wherein the processor postpones the NPUSCH transmission, (i) based on that the start position of the NPUSCH transmission is determined as a second of the two contiguous subframes,

wherein the processor performs the NPUSCH transmission, (ii) based on that the start position of the NPUSCH transmission is determined as a first of two contiguous subframes,

wherein the two contiguous subframes are configured as a time division duplex (TDD) uplink subframe based on at least one of TDD configurations 1 and 4,

wherein the two contiguous subframes are defined for a subcarrier spacing of 3.75 kHz.

11. The wireless device of claim 10, wherein the NPUSCH transmission is performed based on that the two contiguous subframes are configured as valid subframes.

12. The wireless device of claim 10, wherein the NPUSCH transmission is performed based on that the two contiguous subframes are not configured as invalid subframes.

13. The wireless device of claim 10, wherein the processor postpones the NPUSCH transmission, based on that at least one of the two contiguous subframes is configured as an invalid subframe.

14. The wireless device of claim 10, wherein the processor postpones the NPUSCH transmission, based on that the two contiguous subframes are overlapped with a narrowband physical random access channel (NPRACH) transmission.

15. The wireless device of claim 10, wherein the NPUSCH transmission are mapped to a plurality of resource elements (REs) which are not used for a reference signal.

16. The wireless device of claim 10, wherein based on that an invalid subframe is included in the two contiguous subframes used for the NPUSCH transmission, and based on that a repetition level of the NPUSCH transmission is smaller than or equal to a specific value, the NPUSCH transmission is postponed,

wherein based on that an invalid subframe is included in the two contiguous subframes used for the NPUSCH transmission, and based on that the repetition level of the NPUSCH transmission is greater than or equal to a specific value, the NPUSCH transmission is punctured.

17. The wireless device of claim 10, wherein the processor postpones the NPUSCH transmission is performed based on that a number of valid subframes included in the two contiguous subframes is smaller than or equal to 1.

18. The wireless device of claim 10, wherein based on that at least one of the two contiguous subframes includes an invalid subframe, the NPUSCH transmission mapped to a RE in the invalid subframe is punctured.