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Wireless communication method and device for blind detection of downlink signals

專利號(hào)
US11627611B2
公開日期
2023-04-11
申請(qǐng)人
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.（CN Dongguan）
發(fā)明人
Hai Tang
IPC分類
H04W74/08; H04W76/27; H04L5/00; H04L27/26; H04W80/02
技術(shù)領(lǐng)域
preamble,signal,symbol,downlink,subcarrier,point,cp,in,time,spacing
地域： Guangdong

摘要

A wireless communication method and device are disclosed. The method includes performing channel detection for a carrier in an unlicensed frequency band; and sending a preamble signal on the carrier from a first time-point, in response to the channel detection succeeding, the preamble signal being configured for indicating that the carrier has an ability to transmit a downlink signal.

說明書

Alternatively, a time-length for sending the preamble signal is greater than or equal to a length of P preamble signal symbols. Alternatively, the time-length for sending the preamble signal is greater than or equal to a length of P downlink signal symbols. Alternatively, the time-length for sending the preamble signal is greater than or equal to a length of Q information segments of the preamble signal symbol. P is a positive integer, and Q is a positive integer greater than or equal to 2.

Alternatively, an ending point for sending the preamble signal may be an ending point of a downlink signal symbol.

Alternatively, the time-length for sending the preamble signal is less than or equal to a length of R downlink signal symbols, where R is a positive integer, and when the time-length for sending the preamble signal is greater than or equal to a length of P downlink signal symbols, R is greater than P.

Alternatively, the P, Q, or R may be predefined, or may be sent by the network device to a terminal device through one of an RRC signaling, a physical-layer signaling, and a MAC layer signaling.

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