Patent ID: 6023624
Filing Date: 2000-02-08
Classification: H04W

Abstract:
In a cellular wireless telecommunication system, a method of paging a terminating target MTU (mobile telephone unit) comprising the steps of:recording an identity of a new cell in which said target MTU was found in a most recent location process;recording a time of day when the new cell identity was recorded;retaining a previous cell identity;wherein an area served by said cellular wireless telecommunication system comprises a plurality of location areas, and each location area comprises a plurality of cells;wherein each cell is served by a base station, and each base station emits a different set of communication signals;responsive to a request to page said target MTU, determining whether an elapsed time since said new cell identity was recorded is less than a pre-defined threshold;if said elapsed time is less than said pre-defined threshold, determining if the previous cell is within a pre-defined neighborhood of the first cell; andif said determining finds that said, previous cell is within a pre-defined neighborhood of said new previous cell, paging initially only over the identified new cell and the cells neighboring to that cell;if said elapsed time is greater than said pre-defined threshold, paging initially over a larger group of cells than if said elapsed time is less than said pre-defined threshold and said previous cell is within said pre-defined neighborhood;wherein said cells neighboring to that cell need not be in a common location area.