Methods and apparatuses for system information transmission and system information reception in a wireless communication system

A method performed by a network device, the method comprising:

• transmitting a signal comprising a primary synchronization signal (PSS) and a secondary synchronization signal (SSS);
• receiving, from a terminal device, a request for a system information based on a configuration index in a Physical Random Access Channel (PRACH), wherein the request comprises a preamble for the PRACH based on the signal;
• and
• transmitting the system information to the terminal device based on a transmission timing, wherein the transmission timing is determined based on a periodicity of the system information.

A terminal device comprising:

• a memory configured to store one or more instructions;
• and
• a processor configured to:
• receive, from a network device, a signal comprising a primary synchronization signal (PSS) and a secondary synchronization signal (SSS);
• transmit, to the network device, a request for a system information based on a configuration index in a Physical Random Access Channel (PRACH), wherein the processor is further configured to:
• transmit a preamble for the request in the PRACH and the preamble is transmitted based on the signal;
• and
• receive system information from the network device based on a transmission timing, wherein the transmission timing is determined based on a periodicity of the system information.