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Method and user equipment for performing random access procedure

  • US 10,349,449 B2
  • Filed: 10/26/2017
  • Issued: 07/09/2019
  • Est. Priority Date: 10/30/2016
  • Status: Active Grant
First Claim
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1. A method for performing, by a user equipment (UE), a random access (RA) procedure in a wireless communication system, the method comprising:

  • receiving, by the UE, physical random access channel (PRACH) configuration information;

    determining, by the UE, a part of PRACH resources among PRACH resources configured based on the PRACH configuration information; and

    performing, by the UE, the RA procedure using only the determined part of the PRACH resources,wherein the PRACH configuration information includes a periodicity value N, expressed in number of configured PRACH resources,wherein the determined part of PRACH resources are every N-th configured PRACH resource, starting from a starting PRACH resource for the RA procedure, among the PRACH resources configured based on the PRACH configuration information,wherein the starting PRACH resource is a K-th configured PRACH resource after the RA procedure is triggered, andwherein K=(an identity of the UE) modulo N.

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