Method and apparatus for configuring random access channel in short tti or contention based uplink transmission in wireless communication system

Abstract

In an aspect, a method and apparatus for performing random access in a wireless communication system is provided. A user equipment (UE) receives a first set of random access channel (RACH) resources for a short transmission time interval (TTI) and a second set of RACH resources for a normal TTI from an eNodeB (eNB), and performs random access towards the eNB by using the first set of RACH resources for the short TTI. In another aspect, a method and apparatus for performing contention based uplink (UL) transmission in a wireless communication system is provided. A UE receives resources for contention based UL (CB-UL) transmission, and performs the CB-UL transmission by using the resources for the CB-UL transmission.

Dependencies are inferred from the claim text.