Patent ID: 7346361

Claim:
A broadband wireless access communication system in which paging time points are determined, comprising: a plurality of mobile subscriber stations; and a means for determining paging time points for the plurality of mobile subscriber stations, determining an offset value in order to differently set the paging time points at which the plurality of mobile subscriber stations awaken, determining based on a paging cycle and the offset value the paging time points, and transmitting to the plurality of mobile subscriber stations at least one message indicating the determined paging time points, wherein at least one of the plurality of mobile subscriber stations is adapted to mode-transition from an idle mode into an awake mode when the mobile subscriber station detects a paging targeting the mobile subscriber station itself, is further adapted to be served by a serving base station, mode-transition into an awake mode and perform location update with a target base station based on a detected movement of the mobile subscriber station into a paging zone different from a paging zone of the serving base station, and transmits a location update request to the target base station and receives a location update response from the target base station, and further wherein the paging zone is a zone grouping a plurality of base stations, and the base stations in a same paging zone use a same paging zone identifier.