Wireless communication method and device for blind detection of downlink signals
摘要
說明書
In Type 2, since a subcarrier spacing of the preamble signal is greater than a subcarrier spacing of a downlink signal, both the first sequence and the second sequence may be transmitted on the symbol #n. The symbol #n includes 4 preamble signal symbols, and the first sequence and the second sequence can be alternately transmitted on the symbol #n. That is, the 4 preamble signal symbols successively transmit the first sequence, the second sequence, the first sequence, and the second sequence, or the 4 preamble signal symbols sequentially transmit the second sequence, the first sequence, the second sequence, and the first sequence.
Alternatively, the terminal device can detect the preamble signal from a starting point of the first, second, or third preamble signal symbol in the four preamble signal symbols, and the preamble signal can be successfully detected.
Alternatively, the first sequence and the second sequence may be transmitted in an order, and the transmission order of the first sequence and the second sequence may be that one type of sequence has been transmitted and then another type of sequence is transmitted. The 4 preamble signal symbols can sequentially transmit the first sequence, the first sequence, the second sequence, and the second sequence, or the 4 preamble signal symbols can sequentially transmit the second sequence, the second sequence, the first sequence, and the first sequence.
Alternatively, the terminal device can detect the preamble signal from a starting point of the first preamble signal symbol in the four preamble signal symbols, and the preamble signal can be successfully detected.
