Patent ID: 9277492
Filing Date: 2016-03-01
CPC Classification: H04W

Claim Text:
1. A method of network selection by a mobile wireless device while roaming on a visited wireless network, the method of network selection comprising: storing, at least in part in the mobile wireless device, network adjacency information, comprising a first database and a second database, for wireless networks, while the mobile wireless device is connected to a home wireless network; roaming from the home wireless network to the visited wireless network; connecting the mobile wireless device to the visited wireless network; determining from the first database that a country code of the visited wireless network matches a country code of the home wireless network or that the visited wireless network is adjacent to the home wireless network; searching the second database to determine whether the home wireless network is adjacent to the visited wireless network; and scanning for the home wireless network when the home wireless network is adjacent to the visited wireless network based on the search of the second database.