Method for receiving reference signal and electronic device therefor

Patent metadata

Field	Value
Publication number	US-11026101-B2
Application number	US-202016947145-A
Country	US
Kind code	B2
Filing date	Jul 21, 2020
Priority date	Nov 16, 2018
Publication date	Jun 1, 2021
Grant date	Jun 1, 2021

Abstract

An electronic device may receive discontinuous reception (DRX) cycle information from a first cell, may receive synchronization signal block measurement timing information including synchronization signal block measurement window information and synchronization signal block measurement period information, and may receive at least part of a first synchronization signal block from the first cell and at least part of a second synchronization signal block from a second cell neighboring the first cell, at a period indicated by the DRX cycle information based on the synchronization signal block measurement timing information. When reception timing of the first synchronization signal block and reception timing of the second synchronization signal block is less than a specified time duration, the device may receive the at least part of the first synchronization signal block in a first measurement window, and may receive the at least part of the second synchronization signal block within a second measurement window.

First claim

What is claimed is:

1. An electronic device comprising:
a memory;
a wireless communication circuitry; and
a processor connected to the memory and the wireless communication circuitry,
wherein the processor is configured to:
receive timing information of synchronization signal block measurement, the timing information including window information for measuring a synchronization signal block and period information for measuring the synchronization signal block,
receive a first synchronization signal block from a first cell during a first window of a first period based on the timing information,
transit to a second power state from a first power state after the first window, the second power state corresponding to a lower power state than the first power state, and
receive a second synchronization signal block from a second cell adjacent to the first cell during a second window of a second period based on the timing information by transitioning to the first power state, the second window being indicated by the window information.

2. The electronic device of claim 1 , wherein the processor is configured to:
maintain the second power state for a period indicated by the period information between the first window and the second window.

3. The electronic device of claim 1 , wherein the processor is configured to:
receive the second synchronization signal block by transitioning to the first power state for a part of the second window.

4. The electronic device of claim 3 , wherein the processor is configured to:
receive the first synchronization signal block during the first window, using a first beamforming vector associated with the first cell; and
receive the second synchronization signal block during the second window, using a second beamforming vector associated with the second cell,
wherein the first beamforming vector and the second beamforming vector are different from each other.

5. The electronic device of claim 4 , wherein the processor is configured to:
maintain the second power state for at least the part of the second window.

6. The electronic device of claim 4 , wherein the first synchronization signal block and the second synchronization signal block at least partially overlap each other on a time domain.

7. The electronic device of claim 6 , wherein the processor is configured to:
determine a length of the part of the second window based on a reception power of a part of the second synchronization signal block received in the first window using the first beamforming vector.

8. The electronic device of claim 1 , wherein the timing information further includes offset information, and
wherein the processor is configured to determine a starting point of each of the first window and the second window further based on the offset information.

9. The electronic device of claim 1 , wherein the timing information corresponds to synchronization signal block (SSB)-based radio resource management (RRM) measurement timing configuration (SMTC).

10. The electronic device of claim 1 , wherein each of the first synchronization signal block and the second synchronization signal block includes a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcasting channel (PBCH).

11. The electronic device of claim 1 , wherein the electronic device is in a radio resource control (RRC) inactive state or an RRC idle state.

12. The electronic device of claim 1 , wherein the first power state corresponds to a wake-up state and the second power state corresponds to an idle state or a sleep state.

13. The electronic device of claim 1 , wherein the wireless communication circuitry is connected to an array antenna supporting beamforming, the array antenna including a plurality of antennas.

14. The electronic device of claim 1 , wherein the processor is configured to receive discontinuous reception (DRX) cycle information and on-duration information from the first cell.

15. The electronic device of claim 14 , wherein the processor is configured to receive the first synchronization signal block and the second synchronization signal block during a duration indicated by the on-duration information according to the DRX cycle information.

16. A portable communication device comprising:
an antenna;
a radio frequency integrated circuit (RFIC) electrically connected to the antenna; and
a processor controls the RFIC to perform directional beam forming through the antenna, wherein the processor is further configured to:
receive, from a first external electronic device associated with a first cell, synchronization timing information for receiving a first synchronization signal from the first cell of a wireless network and for receiving a second synchronization signal from a second cell of the wireless network, the synchronization timing information including a time duration and a period for the time duration,
receive the first synchronization signal from the first external electronic device through a first directional beam corresponding to a first direction during a first time duration lasting for at least a part of the time duration at least partly based on the synchronization timing information,
receive the second synchronization signal from a second external electronic device through a second directional beam corresponding to a second direction different from the first direction during a second time duration starting from a second time point and lasting for at least the part of the time duration at least partly based on the synchronization timing information, and

when the first time duration and the second time duration are determined to satisfy a specified condition based on the period:
receive the first synchronization signal from the first external electronic device through the first directional beam during a third time duration based on the time duration and the period included in the synchronization timing information, and
receive the second synchronization signal from the second external electronic device through the second directional beam during a fourth duration determined based on the time duration and the period included in the timing synchronization information.

17. The portable communication device of claim 16 , wherein the processor is further configured to:
operate in a first power mode during the third time duration and a fourth time duration, and
operate in a second power mode for at least a part of a time duration after the third time duration and before the fourth time duration, the second power mode consuming lower power than the first power mode.

18. The portable communication device of claim 16 , wherein the processor is further configured to determine that the specified condition is satisfied when a transmission of the first synchronization signal from the first external electronic device and a transmission of the second synchronization signal from the second external electronic device are at least partially occurred at the same time.

19. The portable communication device of claim 16 , wherein the processor is further configured to determine that the specified condition is satisfied when a fifth duration for receiving the first synchronization signal and a sixth duration for receiving the second synchronization signal are determined to be at least partially overlapping each other.

20. A communication chip comprising:
a processor configured to:
receive, from a first external electronic device associated with a first cell, synchronization timing info

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kim Taeyoon
• Lee Hyoungjoo
• Woo Junyoung
• Lim Chaiman
• Park Sungchul

Classifications

• H04W24/08

  Testing, {supervising or monitoring} using real traffic · CPC title

• H04W76/28

  Discontinuous transmission [DTX]; Discontinuous reception [DRX] · CPC title

• H04W52/0209

  in terminal devices · CPC title

• H04B7/088

  using beam selection · CPC title

• H04B7/0404

  the mobile station comprising multiple antennas, e.g. to provide uplink diversity · CPC title