Method and apparatus for resource allocation and bandwidth part inactivity timer handling for vehicle-to-everything communication

A terminal in a wireless communication system, comprising:

• a transceiver;
• and
• a controller coupled with the transceiver and configured to:
• control the transceiver to receive, from a base station, a plurality of synchronization signal blocks (SSBs),
• identify at least one physical downlink control channel (PDCCH) monitoring occasion associated with each of the plurality of SSBs in a system information (SI) window, wherein an (x*N+K)th PDCCH monitoring occasion of the at least one PDCCH monitoring occasion in the SI window is mapped to a Kth SSB of the plurality of SSBs, where the at least one PDCCH monitoring occasion in the SI window is sequentially numbered from one, the plurality of SSBs are sequentially numbered in ascending order of SSB indexes of the plurality of SSBs from one, N is a number of the plurality of SSBs, and x is an integer greater than or equal to zero and less than a number of the at least one PDCCH monitoring occasion in the SI window divided by N, and
• monitor at least one PDCCH monitoring occasion associated with at least one of the plurality of SSBs to acquire an SI message.

A method performed by a base station for transmitting a system information (SI) message, comprising:

• transmitting, to a terminal, a plurality of synchronization signal blocks (SSBs);
• and
• transmitting, to the terminal, the SI message in at least one physical downlink control channel (PDCCH) monitoring occasion in an SI window using a downlink beam corresponding to an SSB associated with the at least one PDCCH monitoring occasion among the plurality of SSBs,
• wherein an (x*N+K)th PDCCH monitoring occasion of the at least one PDCCH monitoring occasion in the SI window corresponds to a Kth SSB of the plurality of SSBs, where N is a number of the plurality of SSBs, x is an integer greater than or equal to zero and less than a number of the at least one PDCCH monitoring occasion in the SI window divided by N.

A base station in a wireless communication system, comprising:

• a transceiver;
• and
• a controller coupled with the transceiver and configured to:
• control the transceiver to transmit, to a terminal, a plurality of synchronization signal blocks (SSBs), and
• control the transceiver to transmit, to the terminal, a system information (SI) message in at least one physical downlink control channel (PDCCH) monitoring occasion in an SI window using a downlink beam corresponding to an SSB associated with the at least one PDCCH monitoring occasion among the plurality of SSBs,
• wherein an (x*N+K)th PDCCH monitoring occasion of the at least one PDCCH monitoring occasion in the SI window corresponds to a Kth SSB of the plurality of SSBs, where N is a number of the plurality of SSBs, x is an integer greater than or equal to zero and less than a number of the at least one PDCCH monitoring occasion in the SI window divided by N.