Method and apparatus for performing contention based random access procedure over contention free random access procedure in wireless communication system
AssigneeLG Electronics Inc.
InventorsYoungdae LEE, Seungjune YI, Sangwon KIM, Sunyoung LEE
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Abstract
A method and apparatus for performing a random access procedure in a wireless communication system is provided. A user equipment (UE) performs a contention free random access procedure on a first frequency, detects a failure of the contention free random access procedure, and performs a contention based random access procedure. When the first frequency is occupied by other media as a result of listen-before-talk (LBT) operation, the contention based random access procedure may be performed on a second frequency.
Claims15
A method for performing, by a user equipment (UE), a random access procedure in a wireless communication system, the method comprising:
- performing a contention free random access procedure on a first frequency;
- detecting a failure of the contention free random access procedure;
- and
- performing a contention based random access procedure.
A user equipment (UE) in a wireless communication system, the UE comprising:
- a memory;
- a transceiver;
- and
- a processor coupled to the memory and the transceiver,
- wherein the processor is configured to:
- perform a contention free random access procedure on a first frequency;
- detect a failure of the contention free random access procedure;
- and
- perform a contention based random access procedure.
Dependencies are inferred from the claim text.