Patent ID: 7701960
Filing Date: 2010-04-20
Classification: H04J,H04W

Abstract:
1. A method of generating a public long code mask (PLCM) in a mobile terminal, the method comprising: receiving from a base station a PLCM type indicator that indicates a type of the PLCM to be used in the mobile terminal; and generating at least part of the PLCM based on an IMSI_O_S by setting the least significant 34 bits of the PLCM to the IMSI_O_S and setting the most significant 5 bits of the PLCM (M wherein an IMSI_O is an operational international mobile station identification (IMSI), and the IMSI_O_S is last 10-digit numbers of the IMSI_O, wherein the IMSI_O is derived from an IMSI_M, when the PLCM type indicator is the first value, the IMSI_M is based on a mobile identification number (MIN) of the mobile terminal, wherein the IMSI_O is derived from an IMSI_T, when the PLCM type indicator is the second value, the IMSI_T is not associated with the MIN, and wherein a size of the PLCM is 42 bits.