This application discloses a resource configuration method, a resource determining method and apparatus, a communication device, and a storage medium, and belongs to the field of communication technologies. The resource configuration method in embodiments of this application includes: configuring, by a signal sending node, a first resource based on a predetermined first array, where the first array includes at least one Costas array or at least one Costas array set, and each Costas array set includes at least one Costas array; and sending, by the signal sending node, a first signal by using the first resource.

Methods, systems, and devices for wireless communications are described. In some systems, a network entity may determine a subcarrier spacing (SCS) for multiple subcarriers in a continuous wave transmission. The network entity may transmit a control message indicating one or more parameters based on the SCS for the continuous wave transmission. A user equipment (UE) may select one or more parameters of the continuous wave transmission associated with multiple subcarriers. The UE may transmit the continuous wave transmission for activating and communicating with a zero power device. The continuous wave transmission may be modulated with an amplitude shift keying (ASK) modulation scheme and include a set of commands. The zero power device may send signaling in response to the received continuous wave transmission and the set of commands back to the UE.

A method and an apparatus for transmitting a physical layer protocol data unit (PPDU) are provided. The method includes: generating a synchronization header field based on a first sequence or a third sequence, where a side lobe of a periodic cross-correlation function of the first sequence and a second sequence is a constant value, the first sequence is a binary sequence consisting of 1 and 0, the second sequence is a binary phase shift keying sequence corresponding to the first sequence, a side lobe of a periodic autocorrelation function of the third sequence is a constant value, and the third sequence is a binary phase shift keying sequence consisting of 1 and 1; and sending the PPDU on a target channel, where the PPDU includes the synchronization header field.

A method includes backscattering, by an ambient power (AMP) device that harvests environmental energy, radio frequency (RF) energy received in a wireless signal from at least one of a powered wireless device or a helper wireless device. The method includes causing, by the AMP device, an initialization request frame to be transmitted to the powered wireless device within a backscattered signal using a first spreading code. The first spreading code can encode a predetermined bit pattern, which is recognizable by the powered wireless device, and an identifier (ID) of the AMP device. The method includes receiving, by the AMP device, from the powered wireless device, an ID request frame in response to the powered wireless device detecting the initialization request frame and recognizing the ID of the AMP device. The ID request frame can trigger an attempt to initiate an encrypted wireless communication session with the powered wireless device.

Systems, apparatuses, methods, and computer-readable media are provided for a user equipment (UE) for a wireless communication system. The UE determines at least one sidelink primary synchronization signal (S-PSS) sequence of at least one S-PSS signal. The at least one S-PSS sequence is different from a primary synchronization signal (PSS) sequence. The UE also determines at least one sidelink secondary synchronization signal (S-SSS) sequence of at least one SSSS signal. The UE determines a plurality of S-PSS symbols and a plurality of SSSS symbols corresponding to a sub carrier spacing (SCS). The UE transmits to another UE the determined plurality of S-SSS symbols after the determined plurality of S-PSS symbols. The SCS may be associated with a physical resource block (PRE) allocation size. A maximum of 11 PRBs for a sidelink synchronization signal block (S-SSB) may be set based on the SCS.

A method includes backscattering, by an ambient power (AMP) device that harvests environmental energy, radio frequency (RF) energy received in a wireless signal from at least one of a powered wireless device or a helper wireless device. The method includes causing, by the AMP device, an initialization request frame to be transmitted to the powered wireless device within a backscattered signal using a first spreading code. The first spreading code can encode a predetermined bit pattern, which is recognizable by the powered wireless device, and an identifier (ID) of the AMP device. The method includes receiving, by the AMP device, from the powered wireless device, an ID request frame in response to the powered wireless device detecting the initialization request frame and recognizing the ID of the AMP device. The ID request frame can trigger an attempt to initiate an encrypted wireless communication session with the powered wireless device.

This disclosure relates to techniques for synchronization signals. The synchronization signal comprises a primary synchronization signal (PSS) generated based on a PSS sequence and a secondary synchronization signal (SSS) generated based on an SSS sequence. The SSS sequence may be generated based on a first sequence corresponding to a first cyclic shift and a second sequence corresponding to a second cyclic shift. The first cyclic shift and the second cyclic shift are associated with a Cell ID. The PSS sequence may be generated based on one of the first and the second sequences.