| 摘要 |
<p>A method of performing a periodic public land mobile network (PLMN) search for a mobile station (10) in a CELL_PCH state of radio resource control (RRC) connected mode in a universal mobile telecommunications system (UMTS) is described. The method includes providing a mobile station (10) operating in the CELL_PCH state camping on a serving cell of a PLMN utilizing a first PLMN identity; performing a periodic PLMN search with the mobile station (10) and selecting a cell with a second PLMN identity, the second PLMN identity having a higher network priority than the first PLMN identity; and performing a CELL UPDATE procedure to register the mobile station (10) with the selected cell utilizing the second PLMN identity if the serving cell and the selected cell are each associated with a common PLMN identity.
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