PAGING SYSTEM WITH ENERGY EFFICIENT STATION LOCATION

摘要

A method for searching for a station carrying paging data without un- duly draining the paging receiver battery. If a station to which the receive r is presently tuned becomes unreliable, the pager scans among channels listed in a local channel list. If no paging data is received on these channels, the scan- ning among the local list channels may optionally proceed for a further inte r- val at a slower rate. After it appears that paging data will not be found on channels listed in the local list, the pager begins a full spectrum search a t a slaw rate until it again finds a channel carrying paging data. By this arran ge- ment, battery power is expended at a rate roughly in accordance with the likeli- hood of ending a paging station.