Random access method, user equipment and base station

A terminal in a communication system, the terminal comprising:

• a transceiver, and
• a controller configured to:
• receive, from a base station, system information including a configuration for a message A (MsgA) of a two-step random access procedure, the MsgA including physical random access channel (PRACH) and a physical uplink shared channel (PUSCH) in the two-step random access procedure;
• transmit, to the base station, the PRACH and the PUSCH based on the configuration;
• and
• receive, from the base station, a response for the PRACH and the PUSCH,
• wherein whether to apply a transform precoding for the PUSCH of the Msg A is determined based on the configuration for the MsgA, in case that the configuration for the MsgA including information indicating whether to apply the transform precoding for the PUSCH of the MsgA, and
• wherein whether to apply a transform precoding for the PUSCH of the Msg A is determined based on the configuration for a message 3(Msg3) of a four-step random access, in case that the configuration for the MsgA does not include the information indicating whether to apply the transform precoding for the PUSCH of the MsgA.

A method performed by a base station in a communication system, the method comprising:

• transmitting, to a terminal, system information including a configuration for a message A (MsgA) of a two-step random access procedure, the MsgA including physical random access channel (PRACH) and a physical uplink shared channel (PUSCH) in the two-step random access procedure;
• receiving, from the terminal, the PRACH and the PUSCH based on the configuration;
• and
• transmitting, to the terminal, a response for the PRACH and the PUSCH,
• wherein whether to apply a transform precoding for the PUSCH of the Msg A is determined based on the configuration for the MsgA, in case that the configuration for the MsgA including information indicating whether to apply the transform precoding for the PUSCH of the MsgA, and
• wherein whether to apply a transform precoding for the PUSCH of the Msg A is determined based on the configuration for a message 3(Msg3) of a four-step random access, in case that the configuration for the MsgA does not include the information indicating whether to apply the transform precoding for the PUSCH of the MsgA.

A base station in a communication system, the base station comprising:

• transmitting, to a terminal, system information including a configuration for a message A (MsgA) of a two-step random access procedure, the MsgA including physical random access channel (PRACH) and a physical uplink shared channel (PUSCH) in the two-step random access procedure;
• receiving, from the terminal, the PRACH and the PUSCH based on the configuration;
• and
• transmitting, to the terminal, a response for the PRACH and the PUSCH,
• wherein whether to apply a transform precoding for the PUSCH of the Msg A is determined based on the configuration for the MsgA, in case that the configuration for the MsgA including information indicating whether to apply the transform precoding for the PUSCH of the MsgA, and
• wherein whether to apply a transform precoding for the PUSCH of the Msg A is determined based on the configuration for a message 3(Msg3) of a four-step random access, in case that the configuration for the MsgA does not include the information indicating whether to apply the transform precoding for the PUSCH of the MsgA.