Patent ID: 11889564
Assignee: NTT DOCOMO, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 2:
3. A radio communication method for a terminal, comprising:
receiving information indicating a first number of preamble transmissions, the information being a condition for switching from a 2-step random access procedure to a 4-step random access procedure, and information indicating a second number which is a maximum number of preamble transmissions; and
when a number of preamble transmissions is the first number, controlling to switch from a 2-step random access procedure to a 4-step random access procedure, and
when the number of preamble transmissions is the second number, determining a failure of the 4-step random access procedure that has been switched from the 2-step random access procedure,
wherein the terminal controls, based on the information indicating the second number, whether or not to report, to a higher layer, the failure of the 4-step random access procedure that has been switched from the 2-step random access procedure.