Repeater and method of operation thereof

Patent metadata

Field	Value
Publication number	US-11240087-B2
Application number	US-201916638602-A
Country	US
Kind code	B2
Filing date	Jul 5, 2019
Priority date	Jul 5, 2018
Publication date	Feb 1, 2022
Grant date	Feb 1, 2022

Abstract

A synchronization detection method of a repeater comprises receiving a communication signal comprising a plurality of synchronization signal blocks respectively belonging to different frequency ranges, determining a priority of a frequency range in which the plurality of synchronization signal blocks are to be detected based on signal level for each frequency range and detecting a synchronization signal block included in each frequency range according to the determined priority.

First claim

The invention claimed is:

1. A synchronization detection method of a repeater, the method comprising:
receiving a communication signal comprising a plurality of synchronization signal blocks respectively belonging to different frequency ranges;
determining a priority of a frequency range in which the plurality of synchronization signal blocks are to be detected based on signal level for each frequency range;
detecting a synchronization signal block existing at arbitrary positions within each frequency range according to the determined priority; and
when the synchronization signal block is detected in a first frequency range, detecting synchronization based on the detected synchronization signal block without performing detection of the synchronization signal block in a second frequency range having a lower priority than the first frequency range.

2. The method of claim 1 , wherein each of the plurality of synchronization signal blocks comprises:
a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH).

3. The method of claim 2 , wherein the detecting synchronization using the detected synchronization signal block includes:
detecting synchronization using a correlation between the PSS and the SSS included in the detected synchronization signal block.

4. The method of claim 3 , further comprising:
generating a switching signal for switching uplink communication and downlink communication in the repeater using the detected synchronization.

5. The method of claim 1 , wherein the determining of the priority of the frequency range in which the plurality of synchronization signal blocks are to be detected comprising:
transforming the communication signal into a frequency domain and detecting signal level for each frequency range of the communication signal transformed into the frequency domain.

6. The method of claim 1 , wherein the determining of the priority of the frequency range in which the plurality of synchronization signal blocks are to be detected comprising:
determining a frequency range having large signal level as a high priority based on the signal level for each frequency range.

7. A repeater comprising:
a domain transform circuit configured to receive a communication signal comprising a plurality of synchronization signal blocks respectively belonging to different frequency ranges and to transform the received communication signal into a frequency domain;
a power detector configured to measure signal level for each frequency range of the communication signal transformed into the frequency domain; and
a synchronization detector configured to determine a priority of a frequency range in which the plurality of synchronization signal blocks are to be detected based on the measured signal level for each frequency range, and to detect a synchronization signal block existing at arbitrary positions within each frequency range according to the determined priority, and
wherein the synchronization detector is configured to, when the synchronization signal block is detected in a first frequency range, detect synchronization based on the detected synchronization signal block without performing detection of the synchronization signal block in a second frequency range having a lower priority than the first frequency range.

8. The repeater of claim 7 , further comprising:
a plurality of uplink/downlink switches, each for switching uplink communication and downlink communication.

9. The repeater of claim 8 , further comprising:
a switching signal generator configured to generate a switching signal for switching the plurality of uplink/downlink switches using the detected synchronization.

10. The repeater of claim 9 , wherein the synchronization signal block comprising:
a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH).

Assignees

• Solid Inc

Inventors

• KWON Nagwon

Classifications

• H04W56/0015 Primary

  one node acting as a reference for the others · CPC title

• H04L27/26136

  Pilot sequence conveying additional information · CPC title

• H04L27/2675 Primary

  Pilot or known symbols · CPC title

• H04W56/001

  Synchronization between nodes · CPC title

• H04J11/0069 Primary

  Cell search, i.e. determining cell identity [cell-ID] (design of multiplexing codes H04J13/00; processing access restriction or access information H04W48/16; discovery of network devices for network data management H04W8/005; sounding signals for channel estimation H04L25/0226; structure of reference signals in multicarrier modulation systems H04L27/2613; frame, time or carrier synchronisation in multicarrier modulation systems H04L27/2655) · CPC title