Patent ID: 8687564
Filing Date: 2014-04-01
Classification: H04B,H04L,H04W

Abstract:
1. A method of determining random access resources performed by a mobile terminal, the method comprising: receiving information about available random access resources from a network; selecting a set of allowed random access resources from the available random access resources based on default values or information received from the network; measuring signal quality of at least one of a cell to be accessed or a neighboring cell; and deriving a random access resource from the set of allowed random access resources based on the measuring, wherein each of the set of allowed random access resources comprises a random access channel (RACH) comprising M RACH allowed frequencies mapped on T RACH time offsets, and S time offsets are defined per a RACH allowed frequency, where each of M, T, and S is a positive number, and wherein a time offset of the derived random access resource is determined by the following formula:  where % represents a modulo operation.