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Method for performing initial access in wireless communication system, and apparatus therefor

專利號
US11039478B2
公開日期
2021-06-15
申請人
LG Electronics Inc.（KR Seoul）
發(fā)明人
Kyuhwan Kwak; Daesung Hwang; Kijun Kim; Hyunsoo Ko
IPC分類
H04W74/08; H04L5/00; H04W72/04; H04W74/00
技術領域
prach,preamble,ue,in,station,may,data,be,access,subframe
地域： Seoul

摘要

Disclosed are a method for performing an initial access in a wireless communication system, and an apparatus therefor. Specifically, a method by which a terminal performs an initial access comprises the steps of: receiving, from a base station, configuration information representing one or more physical random access channel (PRACH) configurations; receiving, from the base station, downlink control information including information indicating a specific PRACH configuration among the one or more PRACH configurations, through a physical downlink control channel; and transmitting a preamble and/or data, which are related to the initial access, to the base station through a PRACH on the basis of the specific PRACH configuration.

說明書

FIG. 9 illustrates other examples of the transmission structure of a preamble and data to which a method proposed in this specification may be applied. FIG. 9 is merely for convenience of description and does not limit the scope of the present invention.

Referring to FIG. 9, it is assumed that the length of a preamble and the transmission region of data are variably configured based on a time resource region (i.e., a fixed time resource region) pre-configured with respect to a specific PRACH configuration. Furthermore, the method described in FIG. 9 may be applied to the structure in which a midamble and data are transmitted together in addition to the structure in which a preamble and data are transmitted together.

For example, a base station may indicate that a UE should transmit the length of a preamble based on a data set (or data type) through a downlink control channel (e.g., PDCCH) (i.e., DCI). In other words, the base station may differently configure the length of a preamble depending on a data set, and may deliver (or indicate) corresponding information to the UE. In this case, a code rate required (or necessary) for a data region may be fixed, and the number of required symbols may be differently configured depending on the data set.

權利要求

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