System And Method Of Data Access For Mobile Stations
AssigneeResearch In Motion Limited
InventorsAsif Hossain, David Ma
Life of this patent
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Abstract
Method and apparatus for data access for a mobile terminal comprising a module for determining whether first and second modes of wireless network coverage is available, a module for selecting the first mode if available, a module for attempting access via the second mode on failure to establish access via the first mode and a module for monitoring availability of the first mode. Even when a connection is established via the second mode, availability of the first mode is monitored and access attempted, when second mode connection is idle.
Claims17
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.
An apparatus capable of establishing data access to an EVDO network and a 1XRTT network within a coverage area, the mobile terminal comprising:
- a processor;
- means for attempting to establish a first point to point session to the EVDO network within the coverage area;
- means for establishing a second point to point session to the 1XRTT network when the first point to point session fails to establish;
- means for monitoring a change of a subnet identifier when the second point to point session to the 1xRTT network becomes dormant;
- means for determining an occurrence of the change of the subnet identifier;
- means for determining an availability of the EVDO network in response to determining the occurrence of the change of the subnet identifier;
- and
- means for authenticating access to the EVDO network in response to determining that the EVDO network is available.
A mobile terminal capable of establishing data access to an EVDO network and a 1XRTT network within a coverage area, the mobile terminal comprising:
- a processor;
- means for attempting to establish a first point to point session to the EVDO network within the coverage area;
- means for establishing a second point to point session to the 1XRTT network when the first point to point session fails to establish;
- means for monitoring a change of a subnet identifier when the second point to point session to the 1xRTT network becomes dormant;
- means for determining an occurrence of the change of the subnet identifier;
- means for determining an availability of the EVDO network in response to determining the occurrence of the change of the subnet identifier has occurred;
- and
- means for authenticating access to the EVDO network in response to determining that the EVDO network is available.
Dependencies are inferred from the claim text.