Systems and methods for intelligent inter-system handoff
First Claim
1. A mobile device, comprising:
- a transceiver configured to tune to a first non-preferred carrier associated with a first network or a second preferred carrier associated with a second network;
a table containing information related to the first and second networks; and
a processor configured to;
tune the transceiver to the first non-preferred carrier;
register with the first network over the first carrier; and
periodically attempt to tune the transceiver to the second preferred carrier only if the information in the table indicates that the mobile device may be within range of the second preferred carrier.
11 Assignments
0 Petitions
Accused Products
Abstract
A multi-mode mobile station performs an inter-system handoff between systems, qualified by the presence or absence of a preferred wireless communication network in a roaming lookup table stored and maintained in either mobile station memory or with the network controller. In one embodiment the accurate location of the mobile unit is determined by a global position fix, after which a coverage map is consulted to verify the availability of a preferred network before initiating a background scan. In other embodiments, a learning function creates habit profiles of a subscriber'"'"'s regular behavior upon which the system intelligently initiates scanning for a preferred network.
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Citations
27 Claims
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1. A mobile device, comprising:
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a transceiver configured to tune to a first non-preferred carrier associated with a first network or a second preferred carrier associated with a second network;
a table containing information related to the first and second networks; and
a processor configured to;
tune the transceiver to the first non-preferred carrier;
register with the first network over the first carrier; and
periodically attempt to tune the transceiver to the second preferred carrier only if the information in the table indicates that the mobile device may be within range of the second preferred carrier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15)
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11. A mobile device, comprising:
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a transceiver configured to tune to a first non-preferred carrier associated with a first network or a second preferred carrier associated with a second network;
a table containing information related to the first and second networks;
a positioner configured to determine the position of the mobile device relative to the second network; and
a processor configured to;
tune the transceiver to the first non-preferred carrier;
register with the first network over the first carrier; and
periodically attempt to tune the transceiver to the second preferred carrier only if the information in the table indicates that the second network is present and the positioner determines that the mobile device is within range of the second preferred carrier. - View Dependent Claims (17, 20, 21, 22, 24, 25, 26)
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16. A mobile device, comprising:
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a transceiver configured to tune to a first non-preferred carrier associated with a first network or a second preferred carrier associated with a second network;
a learning function configured to construct a habit profile that relates certain periods of time to the availability of the second network; and
a processor configured to;
tune the transceiver to the first non-preferred carrier;
register with the first network over the first carrier; and
periodically attempt to tune the transceiver to the second preferred carrier based on the habit profile.
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18. A mobile device, comprising:
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a transceiver configured to tune to a first non-preferred carrier associated with a first network or a second preferred carrier associated with a second network;
a scheduler configured to store the information about certain events; and
a processor configured to;
tune the transceiver to the first non-preferred carrier;
register with the first network over the first carrier; and
periodically attempt to tune the transceiver to the second preferred carrier based on the information stored in the scheduler.
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19. A wireless communication network, comprising:
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a table containing information related to a preferred wireless communication network; and
a plurality of mobile devices, each mobile device comprising;
a transceiver configured to tune to a first non-preferred carrier associated with the wireless communication network or a second preferred carrier associated with the preferred wireless communication network; and
a processor configured to;
tune the transceiver to the first non-preferred carrier;
register with the first network over the first carrier; and
periodically attempt to tune the transceiver to the second preferred carrier only if the information in the table indicates that the mobile device may be within range of the second preferred carrier.
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23. A mobile device, comprising:
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a transceiving means for tuning to a first non-preferred carrier associated with a first network or a second preferred carrier associated with a second network;
a storage means for storing a table containing information related to the first and second networks; and
a processing means for;
tuning the transceiver to the first non-preferred carrier;
registering with the first network over the first carrier; and
periodically attempting to tune the transceiver to the second preferred carrier only if the information in the table indicates that the mobile device may be within range of the second preferred carrier.
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27. A wireless communication network, comprising:
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a plurality of mobile devices, each mobile device comprising;
a transceiver configured to tune to a first non-preferred carrier associated with the wireless communication network or a second preferred carrier associated with the preferred wireless communication network; and
a processor configured to;
tune the transceiver to the first non-preferred carrier;
register with the first network over the first carrier; and
periodically attempt to tune the transceiver to the second preferred carrier whenever the wireless communication network sends a command to the mobile device instructing the mobile device to scan for the preferred wireless communication network.
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Specification