Techniques for unified synchronization channel design in new radio

Patent metadata

Field	Value
Publication number	US-11290251-B2
Application number	US-202016913921-A
Country	US
Kind code	B2
Filing date	Jun 26, 2020
Priority date	Dec 12, 2016
Publication date	Mar 29, 2022
Grant date	Mar 29, 2022

Abstract

Various aspects described herein relate to techniques for synchronization channel design and signaling in wireless communications systems (e.g., a 5th Generation (5G) New Radio (NR) system). In an aspect, a method includes identifying a frequency band supported by a user equipment (UE), identifying one or more frequency locations based on the identified frequency band, and the one or more frequency locations are a subset of synchronization raster points used for synchronization signal transmission. The method further includes searching for at least one synchronization signal based on the one or more identified frequency locations.

First claim

What is claimed is:

1. A user equipment (UE) for wireless communications, comprising:
means for identifying a frequency band in a subset of frequency bands supported by the UE;
means for identifying a synchronization numerology used for the subset of frequency bands; and
means for searching for at least one synchronization signal having the identified synchronization numerology at the identified frequency band.

2. The UE of claim 1 , wherein the synchronization numerology corresponding to the subset of frequency bands and the synchronization numerology corresponding to another subset of frequency bands supported by the UE are different.

3. The UE of claim 1 , wherein the synchronization numerology corresponding to the subset of frequency bands and the synchronization numerology corresponding to another subset of frequency bands supported by the UE are same.

4. The UE of claim 1 , wherein the synchronization numerology is a data channel numerology or a control channel numerology.

5. The UE of claim 1 , wherein the synchronization numerology is 15 kHz or a multiple of 15 kHz.

6. The UE of claim 1 , further comprising:
means for receiving the at least one synchronization signal in a combined slot.

7. The UE of claim 6 , wherein the combined slot includes two or more slots without at least a downlink common burst or an uplink common burst between the two or more slots.

8. A user equipment (UE) for wireless communications, comprising:
means for identifying a frequency band supported by the UE;
means for identifying one or more frequency locations based on the identified frequency band, wherein the one or more frequency locations are a subset of synchronization raster points used for synchronization signal transmission; and
means for searching for at least one synchronization signal based on the one or more identified frequency locations.

9. The UE of claim 8 , wherein the subset of synchronization raster points includes known frequency locations to the UE.

10. The UE of claim 8 , wherein the one or more frequency locations comprises at least two frequency locations, and wherein a spacing between two frequency locations of the at least two frequency locations is equal to or larger than a synchronization channel raster.

11. The UE of claim 8 , wherein the frequency band is in a subset of frequency bands that are supported by the UE.

12. The UE of claim 11 , wherein the subset of the frequency bands only includes one of frequency bands with a minimum system bandwidth or frequency bands with a same synchronization bandwidth upper boundary.

13. The UE of claim 11 , wherein each frequency band of the subset of the frequency bands has a known synchronization numerology.

14. The UE of claim 11 , wherein the subset of the frequency bands includes frequency bands having at least one known synchronization channel raster.

15. The UE of claim 8 , wherein the subset of synchronization raster points includes synchronization raster points having a synchronization channel raster corresponding to a known decimation factor.

16. A base station for wireless communications, comprising:
means for identifying a frequency band in a subset of frequency bands supported by a user equipment (UE), wherein the identified frequency belongs to a band category supported by the UE;
means for identifying a synchronization numerology of at least one synchronization signal used for the subset of frequency bands; and
means for transmitting at least one synchronization signal having the identified synchronization numerology at the identified frequency band,
wherein the synchronization signal is at the identified frequency band in the supported band category,
wherein, for the supported band category, data or control channel numerology is a multiple of the synchronization numerology.

17. The base station of claim 16 , wherein the synchronization numerology corresponding to the subset of frequency bands and the synchronization numerology corresponding to another subset of frequency bands supported by the UE are different.

18. The base station of claim 16 , wherein the synchronization numerology corresponding to the subset of frequency bands and the synchronization numerology corresponding to another subset of frequency bands supported by the UE are same.

19. The base station of claim 16 , wherein the synchronization numerology is a data channel numerology or a control channel numerology.

20. The base station of claim 16 , wherein the synchronization numerology is 15 kHz or a multiple of 15 kHz.

21. The base station of claim 16 , wherein the means for transmitting at least one synchronization signal comprises means for transmitting at least one synchronization signal in a combined slot.

22. The base station of claim 21 , wherein the combined slot includes two or more slots without at least a downlink common burst or an uplink common burst between the two or more slots.

23. A base station for wireless communications, comprising:
means for identifying a frequency band supported by a user equipment (UE);
means for identifying one or more frequency locations based on the identified frequency band, wherein the one or more frequency locations are a subset of synchronization raster points used for synchronization signal transmission; and
means for transmitting at least one synchronization signal based on the one or more identified frequency locations.

24. The base station of claim 23 , wherein the subset of synchronization raster points includes known frequency locations to the UE.

25. The base station of claim 23 , wherein the one or more frequency locations comprises at least two frequency locations, and wherein a spacing between two frequency locations of the at least two frequency locations is equal to or larger than a synchronization channel raster.

26. The base station of claim 23 , wherein the frequency band is in a subset of frequency bands that are supported by the UE.

27. The base station of claim 26 , wherein the subset of the frequency bands only includes one of frequency bands with a minimum system bandwidth or frequency bands with a same synchronization bandwidth upper boundary.

28. The base station of claim 26 , wherein each frequency band of the subset of the frequency bands has a known synchronization numerology.

29. The base station of claim 26 , wherein the subset of the frequency bands includes frequency bands having at least one known synchronization channel raster.

30. The base station of claim 23 , wherein the subset of synchronization raster points includes synchronization raster points having a synchronization channel raster corresponding to a known decimation factor.

Assignees

• Qualcomm Inc

Inventors

• Ly Hung
• Ji Tingfang
• Lee Heechoon
• Sun Haitong
• Smee John Edward

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04L27/2613

  Structure of the reference signals · CPC title

• H04L27/26025

  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

• H04L5/0048 Primary

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04L7/042 Primary

  Detectors therefor, e.g. correlators, state machines (digital correlators in general G06F17/15) · CPC title