Systems and methods for configuring carriers using overlapping sets of candidate numerologies

Patent metadata

Field	Value
Publication number	US-10855501-B2
Application number	US-201815979092-A
Country	US
Kind code	B2
Filing date	May 14, 2018
Priority date	Oct 23, 2015
Publication date	Dec 1, 2020
Grant date	Dec 1, 2020

Abstract

It is possible to reduce the implementation complexity associated with dynamic carrier configuration by defining overlapping sets of candidate numerologies for at least some carriers in the network. A common numerology is included in sets of candidate numerologies pre-associated with two different carriers. This reduces the amount of numerologies that need to be supported by the corresponding user equipments (UEs) and base stations, which in turn reduces the complexity of those devices, e.g., less complex hardware, protocol stacks, and software, lower storage and processing requirements, etc. The common numerology specifies a common subset of physical layer parameters for both carriers. In one example, the common numerology specifies the same sub-carrier frequency spacing and symbol duration for both carriers. The common numerology may further specify the same cyclic prefix (CP) length for symbols communicated over both carriers.

First claim

What is claimed is:

1. A method for wireless communication, the method comprising:
communicating a first signal over a first carrier according to a first numerology of a first set of numerologies associated with a first range of carrier center frequencies, the first set of numerologies comprising the first numerology and a second numerology different from the first numerology,
wherein one of the first numerology or the second numerology is the same as a third numerology of a second set of numerologies, the second set of numerologies associated with a second range of carrier center frequencies different from the first range of carrier center frequencies, the second set of numerologies further comprising a fourth numerology different from both the first and second numerologies,
wherein the third numerology is the same as the second numerology,
wherein a sub-carrier spacing of the third numerology is two times a sub-carrier spacing of the first numerology, and
wherein the sub-carrier spacing of the first numerology is one of 3.75 kHz, 7.5 kHz, 15 kHz, 30 kHz.

2. The method of claim 1 , wherein the sub-carrier spacing of the third numerology is 15 kHz.

3. The method of claim 1 , wherein the sub-carrier spacing of the third numerology is 30 kHz.

4. The method of claim 1 , wherein the sub-carrier spacing of the third numerology is 60 kHz.

5. The method of claim 1 , wherein the first range of carrier center frequencies is between 0.6 GHz and 3 GHz, or between 3 GHz and 6 GHz.

6. The method of claim 1 , wherein the second range of carrier center frequencies is carrier center frequencies between 6 GHz and 60 GHz.

7. An apparatus comprising:
a processor; and
a computer readable storage medium storing programming for execution by the processor, the programming including instructions to:
communicate a first signal according to a first numerology of a first set of numerologies associated with a first range of carrier center frequencies, the first set of numerologies comprising the first numerology and a second numerology different from the first numerology,
wherein one of the first numerology or the second numerology is the same as a third numerology of a second set of numerologies, the second set of numerologies associated with a second range of carrier center frequencies different from the first range of carrier center frequencies, the second set of numerologies further comprising a fourth numerology different from both the first and second numerologies,
wherein the third numerology is the same as the second numerology,
wherein a sub-carrier spacing of the third numerology is two times a sub-carrier spacing of the first numerology, and
wherein the sub-carrier spacing of the first numerology is one of 3.75 kHz, 7.5 kHz, 15 kHz, or 30 kHz.

8. The apparatus of claim 7 , wherein the sub-carrier spacing of the third numerology is 15 kHz.

9. The apparatus of claim 7 , wherein the sub-carrier spacing of the third numerology is 30 kHz.

10. The apparatus of claim 7 , wherein the sub-carrier spacing of the third numerology is 60 kHz.

11. The apparatus of claim 7 , wherein the first range of carrier center frequencies is between 0.6 GHz and 3 GHz, or between 3 GHz and 6 GHz.

12. The apparatus of claim 7 , wherein the second range of carrier center frequencies is between 6 GHz and 60 GHz.

13. The apparatus of claim 7 , wherein the apparatus is a user equipment.

14. The apparatus of claim 7 , wherein the apparatus is a network device.

15. A method for wireless communication, the method comprising:
communicating an indication of a first numerology of a first set of numerologies associated with a first range of carrier center frequencies, the first set of numerologies comprising the first numerology and a second numerology different from the first numerology,
wherein one of the first numerology or the second numerology is the same as a third numerology of a second set of numerologies, the second set of numerologies associated with a second range of carrier center frequencies different from the first range of carrier center frequencies, the second set of numerologies further comprising a fourth numerology different from both the first and second numerologies,
wherein the third numerology is the same as the second numerology,
wherein a sub-carrier spacing of the third numerology is two times a sub-carrier spacing of the first numerology, and
wherein the sub-carrier spacing of the first numerology is one of 3.75 kHz, 7.5 kHz, 15 kHz, or 30 kHz; and
communicating a first signal according to the first numerology.

16. The method of claim 15 , wherein the sub-carrier spacing of the third numerology is 15 kHz.

17. The method of claim 15 , wherein the sub-carrier spacing of the third numerology is 30 kHz.

18. The method of claim 15 , wherein the sub-carrier spacing of the third numerology is 60 kHz.

19. The method of claim 15 , wherein the first range of carrier center frequencies is between 0.6 GHz and 3 GHz, or between 3 GHz and 6 GHz.

20. The method of claim 15 , wherein the second range of carrier center frequencies is between 6 GHz and 60 GHz.

21. An apparatus comprising:
a processor; and
a computer readable storage medium storing programming for execution by the processor, the programming including instructions to:
communicate an indication of a first numerology of a first set of numerologies associated with a first range of carrier center frequencies, the first set of numerologies comprising the first numerology and a second numerology different from the first numerology,
wherein one of the first numerology or the second numerology is the same as a third numerology of a second set of numerologies, the second set of numerologies associated with a second range of carrier center frequencies different from the first range of carrier center frequencies, the second set of numerologies further comprising a fourth numerology different from both the first and second numerologies,
wherein the third numerology is the same as the second numerology,
wherein a sub-carrier spacing of the third numerology is two times a sub-carrier spacing of the first numerology, and
wherein the sub-carrier spacing of the first numerology is one of 3.75 kHz, 7.5 kHz, 15 kHz, or 30 kHz; and
communicate a first signal according to the first numerology.

22. The apparatus of claim 21 , wherein the sub-carrier spacing of the third numerology is 15 kHz.

23. The apparatus of claim 21 , wherein the sub-carrier spacing of the third numerology is 30 kHz.

24. The apparatus of claim 21 , wherein the sub-carrier spacing of the third numerology is 60 kHz.

25. The apparatus of claim 21 , wherein the first range of carrier center frequencies is between 0.6 GHz and 3 GHz, or between 3 GHz and 6 GHz.

26. The apparatus of claim 21 , wherein the second range of carrier center frequencies is between 6 GHz and 60 GHz.

27. The apparatus of claim 21 , wherein the apparatus is a user equipment.

28. The apparatus of claim 21 , wherein the apparatus is a network device.

Assignees

• Huawei Tech Co Ltd

Inventors

• Ma Jianglei
• Rong Lu
• Zhang Liqing

Classifications

• H04L27/26025 Primary

  Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking (allocating sub-channels of the transmission path H04L5/003) · CPC title

• H04L27/2607 Primary

  Cyclic extensions · CPC title

• H04L5/0094

  Indication of how sub-channels of the path are allocated · CPC title

• H04L69/323

  in the physical layer [OSI layer 1] · CPC title

• H04L5/001 Primary

  the frequencies being arranged in component carriers · CPC title