Patent ID: 7542451

Claim:
A method of performing system selection in a code division multiple access (CDMA) communication network, comprising: processing a System Parameters Message or an Extended System Parameters Message received from a base station in the CDMA network; obtaining a mobile country code (MCC) value and a network operator code (NOC) value from an MCC field and an IMSI_ 11 _ 12 field, respectively, of the System Parameters Message or the Extended System Parameters Message, wherein the MCC and NOC values form a network operator identifier (NOI) that distinctly identifies a network operator of the CDMA network; encoding the MCC and NOC values into a system identification (SID) value and a network identification (NID) value; comparing the encoded SID and NID values against values stored in SID and NID fields of a preferred roaming list; and providing an indication of whether or not the CDMA network is accessible based on result of the searching.