Patent ID: 6567663
Filing Date: 2003-05-20
Classification: H04B,H04W,Y02D

Abstract:
In a mobile station, a method of searching for a home public land mobile network comprising the steps of:storing home public land mobile network information including a home public land mobile network broadcast allocation list and a power level of each of a plurality of channels of the home public land mobile network broadcast allocation list upon losing service from the home public land mobile network; measuring a receive power level of each of the plurality of channels of the home public land mobile network broadcast allocation list to produce a plurality of receive power level measurements; for each of the plurality of channels of the home public land mobile network broadcast allocation list, until the home public land mobile network is found, determining whether the receive power level of the measured channel is adequate; determining whether the receive power level of the measured channel is strong enough to synchronize to the measured channel if the receive power level of the measured channel is adequate; reading broadcast data from the measured channel if the receive power level of the measured channel is strong enough to synchronize to the measured channel, wherein the broadcast data includes a public land mobile network and a public land mobile network broadcast allocation list; determining whether the public land mobile network identified in the broadcast data matches the home public land mobile network; and initiating camping on the home public land mobile network using the public land mobile network broadcast allocation list when the public land mobile network matches the home public land mobile network.