Signal forwarding method and apparatus

A signal forwarding method, comprising:

• sending, by a network device, first information comprising a parameter indicating a terminal device to send a signal on a first frequency;
• receiving, by the network device, signals on a second frequency and a third frequency based on the parameter, wherein the second frequency and the third frequency are different, and at least one of the second frequency and the third frequency is different from the first frequency;
• and
• combining, by the network device, the signals received on the second frequency and the third frequency.

A apparatus, comprising:

• a transceiver;
• a processor;
• and
• a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions to:
• combine N signals into one signal, wherein the N signals correspond to N receive channels, each signal is obtained by performing frequency shift on a signal received by a receive channel corresponding to each signal, or each signal is obtained without performing frequency shift on a signal received by a receive channel corresponding to each signal, and at least one signal comprised in the N signals is obtained by performing frequency shift on a signal received by a receive channel corresponding to the at least one signal, wherein N is greater than or equal to 2;
• and
• send the combined one signal.