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Method and device for performing wireless communication in unlicensed band

專利號
US11516857B2
公開日期
2022-11-29
申請人
KT CORPORATION（KR Gyeonggi-do）
發(fā)明人
Ki-tae Kim; Ki-hyeon Park
IPC分類
H04W16/28; H04W74/08; H04W56/00
技術(shù)領(lǐng)域
ssb,ssb_index,lbt,ue,in,burst,nr,unlicensed,may,ssbs
地域： Gyeonggi-do

摘要

Provided are a method and device for performing wireless communication in an unlicensed band. The method, for performing wireless communication in an unlicensed band by a terminal, may include: receiving configuration information relating to a synchronization signal block (SSB) burst set in an unlicensed band; receiving transmission interval information in which an SSB is transmitted in the SSB burst set on the basis of a listen-before-talk (LBT) result with respect to the unlicensed band; and detecting the SSB in the SSB burst set on the basis of the transmission interval information.

說明書

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a National Stage Patent Application of PCT International Patent Application No. PCT/KR2019/008606 (filed on Jul. 11, 2019) under 35 U.S.C. § 371, which claims priority to Korean Patent Application Nos. 10-2018-0081886 (filed on Jul. 13, 2018), 10-2018-0093040 (filed on Aug. 9, 2018), and 10-2019-0083074 (filed on Jul. 10, 2019), the teachings of which are incorporated herein in their entireties by reference.

TECHNICAL FIELD

The present disclosure relates to methods and devices for performing wireless communication considering the results of a listen before talk (LBT) for an unlicensed band in a next-generation wireless access network (hereinafter, “new radio (NR)”).

BACKGROUND ART

Recently, the 3rd generation partnership project (3GPP) has approved the “Study on New Radio Access Technology”, which is a study item for research on next-generation/5G radio access technology (hereinafter, referred to as “new radio” or “NR”). On the basis of the Study on New Radio Access Technology, Radio Access Network Working Group 1 (RAN WG1) has been discussing frame structures, channel coding and modulation, waveforms, multiple access methods, and the like for the new radio (NR). It is required to design the NR not only to provide an improved data transmission rate as compared with the long term evolution (LTE)/LTE-Advanced, but also to meet various requirements in detailed and specific usage scenarios.

權(quán)利要求

1
The invention claimed is:1. A method for performing wireless communication by a user equipment (UE) in an unlicensed band, the method comprising:receiving configuration information about a synchronization signal block (SSB) burst set in the unlicensed band;receiving information about a transmission interval for transmitting an SSB in the SSB burst set based on a result of a listen before talk (LBT) for the unlicensed band; anddetecting the SSB in the SSB burst set based on the transmission interval information,wherein the transmission interval information includes information about a cyclic pattern for transmitting an SSB which is not transmitted at an SSB index where the LBT fails after an SSB transmitted at an SSB index where the LBT succeeds, in the SSB burst set,wherein the cyclic pattern information is configured based on beam configuration information related to the SSB index where the SSB is transmitted, andwherein the beam configuration information includes quasi co-location (QCL) information.2. The method of claim 1, wherein the transmission interval information includes an SSB index where an SSB is transmitted in the SSB burst set and is indicated via RRC signaling or RMSI.3. A method for performing wireless communication by a base station in an unlicensed band, the method comprising:transmitting configuration information about a synchronization signal block (SSB) burst set in the unlicensed band;performing a listen before talk (LBT) for the SSB burst set in the unlicensed band; andtransmitting information about a transmission interval for transmitting an SSB in the SSB burst set based on a result of the LBT,wherein the transmission interval information includes information about a cyclic pattern for transmitting an SSB which is not transmitted at an SSB index where the LBT fails after an SSB transmitted at an SSB index where the LBT succeeds, in the SSB burst set,wherein the cyclic pattern information is configured based on beam configuration information related to the SSB index where the SSB is transmitted, andwherein the beam configuration information includes quasi co-location (QCL) information.4. The method of claim 3, wherein the transmission interval information includes an SSB index where an SSB is transmitted in the SSB burst set and is indicated via RRC signaling or RMSI.5. A user equipment (UE) for performing wireless communication in an unlicensed band, the UE comprising:a receiver receiving configuration information about a synchronization signal block (SSB) burst set in the unlicensed band and receiving information about a transmission interval for transmitting an SSB in the SSB burst set based on a result of a listen before talk (LBT) for the unlicensed band; anda controller detecting the SSB in the SSB burst set based on the transmission interval information,wherein the transmission interval information includes information about a cyclic pattern for transmitting an SSB which is not transmitted at an SSB index where the LBT fails after an SSB transmitted at an SSB index where the LBT succeeds, in the SSB burst set,wherein the cyclic pattern information is configured based on beam configuration information related to the SSB index where the SSB is transmitted, andwherein the beam configuration information includes quasi co-location (QCL) information.6. The UE of claim 5, wherein the transmission interval information includes an SSB index where an SSB is transmitted in the SSB burst set and is indicated via RRC signaling or RMSI.
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