Wireless communication method and device for blind detection of downlink signals
摘要
說明書
Alternatively, a format of preamble signal symbol can indicate at least one of the number of information segments included in the preamble signal symbol, the number of preamble signal symbols, position relationships between the information segment and the CP, a length of the CP, a length of the information segment, and a subcarrier spacing of the preamble signal symbol.
There may be one or more format of the preamble signal symbol. Alternatively, when there are multiple formats of preamble signal symbol, through a high-layer signaling or physical-layer signaling, the network device indicates which of the formats of preamble signal symbol is currently used by a terminal device.
As an example, for a format of preamble signal symbol, a preamble signal symbol includes a first CP and an information segment, and the information segment shares the separate first CP.
As an example, for a format of a preamble signal symbol, the preamble signal symbol includes a second CP and M information segments. The M information segments share the second CP, and M is a positive integer that is greater than or equal to 2. That is, the M information segments are repeatedly sent (which means that signals sent on the M information segments are same).
As an example, a length of the second CP is greater than a length of the first CP.
As an example, the length of the second CP is a length of M first CPs.
A method for determining the first time-point according to a format of preamble signal symbol and/or a time-point at which channel detection succeeds will be described in detail below.
