Method and apparatus for performing random access procedures in a wireless communication system

摘要

In the present description, a maximum transmission number for preamble and a maximum transmission number uplink message are configured to perform a random access procedure. The maximum transmission number for preamble (e.g., preambleTransMax) can be classified into a first type for general access and a second type for MTC and/or delay-tolerant accesses. Further, the maximum transmission number uplink message (e.g., maxHARQ-Msg3Tx) can be classified into a first type and a second type.

主权项

1. A method of performing random access in a wireless communication system, the method performed by a user equipment (UE) and comprising:
receiving information on a first type maximum transmission number and a second type maximum transmission number for random access preamble transmission from a base station, wherein the first type maximum transmission number is used for cell-common random access and the second type maximum transmission number is used for cause-specific random access; selecting one of the first type maximum transmission number and the second type maximum transmission number; setting parameters related to a random access procedure based on the selected maximum transmission number for a random access preamble transmission; and transmitting a random access preamble to the base station based on the set parameters.