Method for determining frame timing, network device, and terminal device

A terminal device, comprising:

• a processor;
• and
• a transceiver coupled with the processor,
• wherein the processor is configured to receive, through the transceiver, beam-specific information through a beam, the beam-specific information comprising a control channel time-frequency region indication field, the control channel time-frequency region indication field being used to indicate a size of a time-frequency region of a control channel sent through the beam;
• and
• determine the size of the time-frequency region of the control channel according to the control channel time-frequency region indication field.

A network device, comprising:

• a processor;
• a transceiver coupled with the processor,
• wherein the processor is configured to determine a time-domain location where a synchronization signal is sent through a beam of a plurality of beams;
• and
• send, through the transceiver, the synchronization signal and beam-specific information to a terminal device, wherein the beam-specific information comprises a control channel time-frequency region indication field, the control channel time-frequency region indication field is used to indicate a size of a time-frequency region of a control channel sent through the beam.