Method and apparatus for communicating in wireless communication system

A base station in a wireless communication system, comprising:

• a transceiver;
• and
• a controller configured to:
• determine an operation mode as one of a first type supporting beam sweeping and a second type not supporting the beam sweeping, in case that the beam sweeping is supported by the base station,
• generate a primary synchronization signal (PSS), the PSS associating with a first sequence in case that the operation mode is determined as the first type and the PSS associating with a second sequence different from the first sequence in case that the operation mode is determined as the second type,
• control the transceiver to transmit, to a terminal, a signal related to the operation mode, the signal related to the operation mode comprising the PSS associating with a different sequence depending on the operation mode,
• control to perform a communication with the terminal according to the operation mode,
• wherein the operation mode is determined, by the terminal, by performing a correlation between the PSS and a sequence corresponding to a specific operation mode.

A method of a terminal in a wireless communication system, comprising:

• receiving, from a base station, a signal related to an operation mode, the operation mode comprising a first type supporting beam sweeping and a second type not supporting the beam sweeping, based on whether the base station supports beam sweeping, the signal related to the operation mode comprising a primary synchronization signal (PSS) having a different sequence depending on the operation mode, the PSS associating with a first sequence in case that the operation mode is the first type and the PSS associating with a second sequence different from the first sequence in case that the operation mode is the second type;
• performing a correlation between the received PSS and a sequence corresponding to a specific operation mode;
• identifying the operation mode of the base station based on a result of the correlation;
• and
• performing a communication with the base station according to the operation mode.

A terminal in a wireless communication system, comprising:

• a transceiver;
• and
• a controller operably connected to the transceiver, the controller configured to:
• control the transceiver to receive, from a base station, a signal related to an operation mode, the operation mode comprising a first type supporting beam sweeping and a second type not supporting the beam sweeping, based on whether the base station supports beam sweeping, the signal related to the operation mode comprising a primary synchronization signal (PSS) having a different sequence depending on the operation mode, the PSS associating with a first sequence in case that the operation mode is the first type and the PSS associating with a second sequence different from the first sequence in case that the operation mode is the second type,
• perform a correlation between the received PSS and a sequence corresponding to a specific operation mode,
• identify the operation mode of the base station based on a result of the correlation;
• and
• perform a communication with the base station according to the operation mode.