Patent ID: 8843162

Claim:
A method comprising: (a) at a mobile station that is operating in a radio access network, determining a location of the mobile station in relation to a zone of last registration, wherein the mobile station last registered with the radio access network in the zone of last registration, wherein the zone of last registration is a paging zone in the radio access network, wherein determining the location of the mobile station in relation to a zone of last registration comprises: (i) determining a current paging zone in which the mobile station is currently located, wherein the current paging zone is a paging zone in the radio access network; and (ii) determining a location of the current paging zone in relation to the zone of last registration; (b) the mobile station using the location of the mobile station in relation to the zone of last registration as a basis for determining a scan period to wait between scans of a paging channel for a page from the radio access network; and (c) the mobile station periodically scanning the paging channel according to the determined scan period.