Method, apparatus, and system of PRACH transmission with repetition, and computer-readable storage medium

A method for transmitting Physical Random Access Channel (PRACH) repetition, applied to a User Equipment (UE), comprising:

• receiving configuration information, the configuration information indicating first PRACH transmission resources only used for PRACH transmission without repetition and second PRACH transmission resources only used for PRACH repetition, wherein the configuration information further comprises a set of candidate PRACH repetition numbers supported by network side and a first parameter indicating an associated relationship between each candidate PRACH repetition number and one or more preambles;
• and
• transmitting a preamble according to the configuration information, comprising:
• determining a PRACH repetition number m from the set of candidate PRACH repetition numbers, and
• transmitting m repetitions of a first preamble using the second PRACH transmission resources;
• determining a random access radio network temporary identifier (RA-RNTI) according to one PRACH transmission occasion among a first group of PRACH transmission occasions corresponding to the PRACH repetition number m;
• obtaining a first downlink control information (DCI) by using the RA-RNTI, and
• receiving a random access response (RAR) according to the first DCI.

A method for transmitting Physical Random Access Channel (PRACH) repetition, applied to a User Equipment (UE), comprising:

• receiving configuration information, the configuration information indicating first PRACH transmission resources only used for PRACH transmission without repetition and second PRACH transmission resources only used for PRACH repetition, wherein the configuration information further comprises a set of candidate PRACH repetition numbers supported by network side and a first parameter indicating an associated relationship between each candidate PRACH repetition number and one or more preambles;
• transmitting a preamble according to the configuration information, comprising:
• determining a PRACH repetition number m from the set of candidate PRACH repetition numbers, and
• transmitting m repetitions of a first preamble using the second PRACH transmission resources;
• receiving a second first downlink control information (DCI);
• determining a random access radio network temporary identifier (RA-RNTI) according to one PRACH transmission occasion among a first group of PRACH transmission occasions corresponding to the PRACH repetition number m;
• descrambling the second DCI by using the RA-RNTI to obtain a first DCI;
• and
• receiving a random access response (RAR) according to the first DCI.