Method and apparatus for reduced capability terminal to perform random access using a plurality of search spaces and a plurality of control resource sets in mobile wireless communication system

A terminal in a wireless communication system, the terminal comprising:

• a transceiver configured to transmit and receive a signal;
• and
• a controller configured to control the transceiver to:
• receive by a terminal from a base station, a System Information Block1 (SIB1) based at least in part on a CORESET indicated by a 4-bit information in Master Information Block (MIB), the CORESET is associated with at least a specific frequency resource and a specific time duration, the SIB1 includes a ServingCellConfigCommon, the ServingCellConfigCommom may include comprises a first RACH-ConfigCommon or the first RACH-ConfigCommon and a second RACH-ConfigCommon, each of the first RACH-ConfigCommon and the second RACH-ConfigCommon include a prach-ConfigurationIndex;
• determine, by the terminal, a preamble format and a subframe and a starting symbol based on the prach-ConfigurationIndex included in the first RACH-ConfigCommon if the second RACH-ConfigCommon is not included in the ServingCellConfigCommon and based on the prach-ConfigurationIndex included in the second RACH-ConfigCommon if the second RACH-ConfigCommon is included in the ServingCellConfigCommon;
• and
• transmit, by the terminal, the preamble based at least in part on the preamble format and the subframe and the starting symbol.

A method by a base station, the method comprising:

• transmitting in a first cell, by a base station, a System Information Block1 (SIB1) based at least in part on a CORESET indicated by a 4-bit information in Master Information Block (MIB), the CORESET is associated with at least a specific frequency resource and a specific time duration, the SIB1 includes a ServingCellConfigCommon, the ServingCellConfigCommom comprises a first RACH-ConfigCommon or the first RACH-ConfigCommon and a second RACH-ConfigCommon, each of the first RACH-ConfigCommon and the second RACH-ConfigCommon include a prach-ConfigurationIndex;
• receiving in the first cell, by the base station from a first type terminal, a preamble at least in part on the prach-ConfigurationIndex included in the first RACH-ConfigCommon;
• and
• receiving in the first cell, by the base station from a second type terminal, a preamble based at least in part on the prach-ConfigurationIndex included in the first RACH-ConfigCommon if the second RACH-ConfigCommon is not included in the ServingCellConfigCommon and based at least in part on the prach-ConfigurationIndex included in the second RACH-ConfigCommon if the second RACH-ConfigCommon is included in the ServingCellConfigCommon.