Signal Sending Method, Network Device, and Terminal Device

An apparatus, comprising:

• a communication interface;
• a processor;
• and
• a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions to:
• receive, from a network device, through the communication interface, a first signal and a second signal, wherein subcarriers occupied by the first signal are continuous subcarriers in a first group of resource elements, wherein subcarriers occupied by the second signal are continuous subcarriers in a second group of resource elements, wherein a quantity of subcarriers occupied by the first signal is the same as a quantity of subcarriers occupied by the second signal, and wherein a subcarrier spacing in the first group of resource elements is different from a subcarrier spacing in the second group of resource elements, and wherein the first signal and the second signal are primary synchronization signals;
• and
• process the first signal and the second signal.

A communication system, comprising:

• a network device;
• and
• a terminal device;
• wherein the network device determines a subcarrier location of a to-be-sent first signal and a subcarrier location of a to-be-sent second signal, wherein subcarriers occupied by the first signal are continuous subcarriers in a first group of resource elements, subcarriers occupied by the second signal are continuous subcarriers in a second group of resource elements, wherein a quantity of the subcarriers occupied by the first signal is the same as a quantity of the subcarriers occupied by the second signal, wherein a subcarrier spacing in the first group of resource elements is different from a subcarrier spacing in the second group of resource elements, and wherein the first signal and the second signal are primary synchronization signals;
• wherein the network device sends the first signal at the determined subcarrier location of the first signal to the terminal device;
• wherein the network device sends the second signal at the determined subcarrier location of the second signal;
• and
• wherein the terminal device receives the first signal.