Abstract: A wireless communication method includes the following operations: adding a data message of a vendor of a first wireless communication device to a frame of a packet through a physical layer; transmitting, by the first wireless communication device, the packet to a second wireless communication device; analyzing, by the second wireless communication device, the packet to obtain the data message; determining, by the second wireless communication device, whether both of the vendor of the first wireless communication device and a vendor of the second wireless communication device are a predetermined vendor according to the data message; if both of the vendor of the first wireless communication device and the vendor of the second wireless communication device are the predetermined vendor, performing, by the second wireless communication device, a specific communication mode of the predetermined vendor to connect to the first wireless communication device.

Abstract: A valid signal detection method includes the following operations: utilizing a first period to calculate a delay correlation function of a communication signal to determine a first delay correlation information; utilizing a second period to calculate the delay correlation function of the communication signal to determine a second delay correlation information, in which the first period is greater than the second period; and determining whether the communication signal is interference according to the first delay correlation information and the second delay correlation information.

Abstract: A wireless communication method includes: modulating, by a device, a string a string to be transmitted in a physical layer according to a spread spectrum sequence (SSS) code corresponding to a vendor of the device when the string is a specific data string of a packet; demodulating, by another device, the packet according to a first SSS code corresponding to a predetermined communication protocol; determining a detection value according to the specific data string and the first SSS code and another detection value according to the specific data string and a SSS code corresponding to a predetermined vendor, and determining whether both vendors of those devices are the predetermined vendor according to those detection values; and if both vendors of those devices are the predetermined vendor, performing, by the another device, a specific communication mode of the predetermined vendor to be connected with the device.

Abstract: A wireless communication method includes the following operations: adding a data message of a vendor of a first wireless communication device to a frame of a packet through a physical layer; transmitting, by the first wireless communication device, the packet to a second wireless communication device; analyzing, by the second wireless communication device, the packet to obtain the data message; determining, by the second wireless communication device, whether both of the vendor of the first wireless communication device and a vendor of the second wireless communication device are a predetermined vendor according to the data message; if both of the vendor of the first wireless communication device and the vendor of the second wireless communication device are the predetermined vendor, performing, by the second wireless communication device, a specific communication mode of the predetermined vendor to connect to the first wireless communication device.

Abstract: A packet detecting method includes receiving the wireless signal, generating a local characteristic sequence, acquiring a first cross-correlation result between the wireless signal and the local characteristic sequence, determining if a packet format of the wireless signal is a target packet format according to the first correlation result, generating at least one interference characteristic sequence according to the local characteristic sequence, a signal sampling frequency, and at least one working frequency difference, acquiring a second cross-correlation result between the wireless signal and the at least one interference characteristic sequence, and detecting a center frequency of the wireless signal for determining if a packet of the wireless signal is transmitted through a target channel according to the first correlation result and the second correlation result. The at least one interference characteristic sequence corresponds to at least one interference frequency.

Abstract: A packet detecting method includes receiving the wireless signal, generating a local characteristic sequence, acquiring a first cross-correlation result between the wireless signal and the local characteristic sequence, determining if a packet format of the wireless signal is a target packet format according to the first correlation result, generating at least one interference characteristic sequence according to the local characteristic sequence, a signal sampling frequency, and at least one working frequency difference, acquiring a second cross-correlation result between the wireless signal and the at least one interference characteristic sequence, and detecting a center frequency of the wireless signal for determining if a packet of the wireless signal is transmitted through a target channel according to the first correlation result and the second correlation result. The at least one interference characteristic sequence corresponds to at least one interference frequency.