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Wireless communication method and device for blind detection of downlink signals

專利號
US11627611B2
公開日期
2023-04-11
申請人
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

In FIG. 5, when the network device selects a starting point of an information segment or a starting point of the CP as the first time-point, the first time-point can be the starting point of the CP, or a starting point of one of the four information segments, as shown by ↓ in FIG. 5. When the network device selects a starting point of a preamble signal symbol as the first time-point, the first time-point can be a starting point of one of the two CPs, as shown in the first ↓ or the fourth ↓ in FIG. 5. When the network device selects a starting point of a downlink signal symbol as the first time-point, then the first time-point can be a starting point of the CP of the first preamble signal symbol, as indicated by the first ↓ in FIG. 5.

On a length of one downlink signal symbol, in addition to the above description in which the same format of preamble signal symbol is used to transmit the preamble signal, different formats of the preamble signal symbol can also be used to transmit the preamble signal.

As an example, on a length of one downlink signal symbol, one downlink signal symbol includes a first preamble signal symbol and a second preamble signal symbol, where the first preamble signal symbol includes a CP and three information segments, and the second preamble signal symbol includes a CP and an information segment. At this time, the first time-point may be a starting point of the CP of the first preamble signal symbol, a starting point of an information segment of the first preamble signal symbol, or a starting point of the CP of the second preamble signal symbol.

權(quán)利要求

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