Patent ID: 8797910

Claim:
A network search method performed by a modem, comprising: periodically sampling signals of a serving cell so as to obtain at least two signal level values and at least two signal quality values of the serving cell; determining a signal power condition according to the signal level values, and determining a signal stability condition according to the signal quality values; when both the signal power condition and the signal stability condition are better than their respective preset condition thresholds, setting a network search state of the modem as an off state, wherein the network search state of the modem includes an off state and a start state, when the modem is in the off state, a network search operation is not performed by the modem; determining a signal level change condition according to the signal level values; determining, according to the signal level change condition, whether signal strength of the serving cell decreases monotonically; and when it is determined that the signal strength of the serving cell decreases monotonically, setting the network search state of the modem as the start state, wherein when the modem is in the start state, the network search operation is performed for reselecting another serving cell.