Patent ID: 7903818
Filing Date: 2011-03-08
Classification: H04W

Abstract:
1. A method of performing a random access to a specific network by a terminal, the method comprising: transmitting a random access preamble message including a prescribed preamble; receiving a random access response message including a Temporary C-RNTI (temporary cell radio network temporary identifier) value and uplink (UL) grant information in response to the random access preamble message; setting terminal identification information of the terminal as the Temporary C-RNTI value received via the random access response message by a MAC (Medium Access Control) layer of the terminal; delivering the received uplink grant information to a physical layer of the terminal from the MAC layer of the terminal; generating, at the physical layer of the terminal, a scrambling sequence as a pseudo-random sequence using a first m-sequence having a first initial value and a second m-sequence having a second initial value, wherein one of the first and the second initial values is set by using the terminal identification information set as the Temporary C-RNTI value received via the random access response message, a slot number, and a physical layer cell identifier, wherein the setting of the terminal identification information as the Temporary C-RNTI value by the MAC layer is performed before the setting of one of the first and the second initial values at the physical layer; scrambling the uplink transmission signal using the generated pseudo random sequence; and transmitting the scrambled uplink transmission signal through a resource region corresponding to the uplink grant information.