Patent ID: 8310992
Filing Date: 2012-11-13
Classification: H04W

Abstract:
1. A method of data access for a mobile terminal capable of establishing data access to an EVDO network and a 1XRTT network within a coverage area, the method comprising: attempting to establish, from the mobile terminal, a first point to point session to the EVDO network within the coverage area; establishing a second point to point session to the 1XRTT network when the first point to point session fails to establish; monitoring a change of a subnet identifier when the second point to point session to the 1XRTT network becomes dormant; determining an occurrence of the change of the subnet identifier; determining an availability of the EVDO network in response to determining the occurrence of the change of the subnet identifier; and authenticating access to the EVDO network in response to determining that the EVDO network is available.