Patent ID: 7693172
Filing Date: 2010-04-06
Classification: H04J,H04W

Abstract:
1. A method for generating a message to indicate generation of a public long code mask (PLCM)communicated in a mobile communications network to a mobile station, the method comprising: setting a PLCM type of the message as a first PLCM type, if the PLCM for the mobile terminal is based on an IMSI_O_S and an IMSI_O is derived from an IMSI_M; and setting the PLCM type of the message as a second PLCM type, when the PLCM for the mobile terminal is based on the IMSI_O_S and the IMSI_O is derived from an IMSI_T; wherein the IMSI_M is an international mobile station identification (IMSI) based on a mobile identification number (MIN) associated with the mobile terminal, the IMSI_T is not associated with MIN, the IMSI_O is an operational IMSI, and the IMSI_O_S is last 10-digit numbers of the IMSI_O; wherein the least significant 34 bits of the PLCM are set to the IMSI_O_S; wherein the first PLCM type is equal to ‘0010’; wherein most significant bits of the PLCM are ‘11000001’, when the PLCM type is the first PLCM type; wherein the second PLCM type is equal to ‘0011’; and wherein most significant bits of the PLCM are ‘11000000’, when the PLCM type is the second PLCM type.