Patent ID: 9730149
Date: 2017-08-08
CPC Classifications: H04W

Claim:
1. A method, comprising: performing a first power scan process on a first list of carrier frequencies by a first communication system in a mobile communication device to obtain a second list of carrier frequencies each having a signal strength above a threshold, the first communication system having a first interface configured to access a first card identifying a first mobile network operator; performing a first cell search process by the first communication system to search for a first cell of a wireless network to camp on from cells having a carrier frequency included in the second list of carrier frequencies; storing the first list of carrier frequencies that has been scanned by the first communication system during the first power scan process in a memory; storing the obtained second list of carrier frequencies each having a signal strength above a threshold in the memory; storing a carrier frequency of the first cell which the first communication system camps on in the memory; and providing one of the first list of carrier frequencies, the second list of carrier frequencies, and the carrier frequency of the first cell to a second communication system in the mobile communication device to reduce network search time of the second communication system, wherein the second communication system has a second interface configured to access a second card identifying a second mobile network operator.