Patent ID: 6035203
Filing Date: 2000-03-07
Classification: H04W

Abstract:
In a cellular wireless telephone communications system, a method of paging a terminating target MTU (Mobile Telephone Unit), comprising the steps of:recording an identity of a cell in which said target MTU was most recently located;recording a time of day when said identity was recorded;responsive to subsequent request to page said target MTU, prior to performing a paging action, determining whether the elapsed interval of time between the time of day when said identity was recorded and the time of day of the receipt of said subsequent request to page said target MTU, exceeds a first threshold; andif said determination finds that said first threshold was not exceeded, initially paging only over the identified cells and the cells neighboring to that cell;if said determination finds that said first threshold was exceeded, paging over a larger group of cells than if said first threshold was not exceeded;wherein an area served by said cellular wireless telecommunications system comprises a plurality of location areas, and each location area comprises a plurality of cells;wherein said cells neighboring to that cell need not be in a common location area.