Repeater and method of operation thereof

Patent metadata

Field	Value
Publication number	US-11778485-B2
Application number	US-202217692557-A
Country	US
Kind code	B2
Filing date	Mar 11, 2022
Priority date	Jul 23, 2018
Publication date	Oct 3, 2023
Grant date	Oct 3, 2023

Abstract

A method of operating a repeater comprises detecting a synchronization signal from a received communication signal, identifying a time division duplex (TDD) switching pattern based on a power change of the communication signal over time and switching an uplink operation and a downlink operation of the repeater based on the detected synchronization signal and the TDD switching pattern.

First claim

The invention claimed is:

1. A method of operating a repeater comprising:
detecting a synchronization signal from a received communication signal;
identifying a time division duplex (TDD) switching pattern based on a power change of the communication signal over time; and
switching an uplink operation and a downlink operation of the repeater based on the detected synchronization signal and the TDD switching pattern,
wherein the identifying the TDD switching pattern includes:
identifying each of two or more TDD switching patterns which are alternately repeated; and
verifying the TDD switching pattern according to whether a signal exists in a certain section outside a boundary of a section determined as a downlink communication section in the communication signal, based on the identified TDD switching pattern.

2. The method of claim 1 , wherein the identifying the TDD switching pattern comprises:
dividing and identifying a first TDD switching pattern corresponding to an odd period and a second TDD switching pattern corresponding to an even period from the communication signal.

3. The method of claim 1 , wherein the detecting the synchronization signal from the received communication signal further comprises:
detecting a frame boundary in the communication signal based on the detected synchronization signal.

4. The method of claim 3 , wherein the detecting the frame boundary comprises:
detecting the frame boundary including start point information of the frame by using the synchronization signal and at least one of half-frame information or beam index information.

5. The method of claim 3 , wherein the identifying of the TDD switching pattern comprises:
identifying the TDD switching pattern on the basis of the power change of the communication signal over time, based on the detected frame boundary.

6. The method of claim 5 , wherein the identifying of the TDD switching pattern comprises:
detecting a period of the TDD switching pattern based on an uplink-downlink transition gap in the communication signal and the detected frame boundary.

7. The method of claim 1 , wherein the identifying of the TDD switching pattern further comprises:
when determining that there is an error in the TDD switching pattern according to a result of verification, verifying the TDD switching pattern by enhancing verification conditions, and
wherein the verification conditions include at least one of whether data is loaded in a section determined as a downlink communication section or an uplink communication section, or a rate at which the identified TDD switching pattern matches a pattern of the communication signal.

8. The method of claim 1 , wherein the identifying of the TDD switching pattern comprises:
identifying one or more candidate TDD switching patterns corresponding to the communication signal based on a period of the TDD switching pattern.

9. A repeater comprising:
a sync detector configured to detect a synchronization signal from a received communication signal;
a TDD pattern identifier configured to identify a time division duplex (TDD) switching pattern based on a power change of the communication signal over time; and
a switching signal generator configured to generate a switching signal for switching an uplink operation and a downlink operation of the repeater based on the detected synchronization signal and the TDD switching pattern,
wherein the TDD pattern identifier is configured to identify each of two or more TDD switching patterns which are alternately repeated, and
wherein the repeater further comprises a TDD pattern decider configured to verify the TDD switching pattern according to whether a signal exists in a certain section outside a boundary of a section determined as a downlink communication section in the communication signal, based on the identified TDD switching pattern.

10. The method of claim 9 , wherein the TDD pattern identifier is configured to:
divide and identify a first TDD switching pattern corresponding to an odd period and a second TDD switching pattern corresponding to an even period from the communication signal.

Assignees

• Solid Inc

Inventors

• Kang Sangwook
• Hong Hoony
• Kim Hyunchae
• Kim Kwon
• Moon Woosik

Classifications

• H04W16/26 Primary

  Cell enhancers {or enhancement}, e.g. for tunnels, building shadow · CPC title

• H04B7/155

  Ground-based stations (H04B7/204 takes precedence) · CPC title

• H04L5/1469

  using time-sharing · CPC title

• H04W56/001 Primary

  Synchronization between nodes · CPC title

• H04J3/0635 Primary

  Clock or time synchronisation in a network (timer in protocols H04L69/28) · CPC title