Locating a wireless local area network associated with a wireless wide area network
First Claim
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1. A method for a mobile device to locate a wireless local area network (WLAN), the method comprising:
- recording geometric time difference (GTD) statistics for the WLAN comprising;
recording a first minimum GTD between a first pair of transmitters; and
recording a first maximum GTD between the first pair of transmitters;
computing a first current GTD based on current measurements from the first pair of transmitters; and
checking for coverage within the WLAN based on the first current GTD being between the first minimum GTD and the first maximum GTD.
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Abstract
An apparatus and method are disclosed in connection with a mobile device locating a wireless local area network (WLAN) associated with a wireless wide area network (WWAN). These concepts involve obtaining and recording maximum and minimum geometric time differences (GTDs) for a pair or pairs of transmitters in the WWAN while coverage is provided by the WLAN, and using these differences to later compare a contemporaneous GTD to determine whether the mobile device is more likely within the coverage area of the WLAN.
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Citations
17 Claims
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1. A method for a mobile device to locate a wireless local area network (WLAN), the method comprising:
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recording geometric time difference (GTD) statistics for the WLAN comprising; recording a first minimum GTD between a first pair of transmitters; and recording a first maximum GTD between the first pair of transmitters; computing a first current GTD based on current measurements from the first pair of transmitters; and checking for coverage within the WLAN based on the first current GTD being between the first minimum GTD and the first maximum GTD. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A mobile device for locating a wireless local area network (WLAN), the mobile device comprising a processor and memory wherein the memory includes software instructions to:
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record geometric time difference (GTD) statistics for the WLAN comprising software instructions to; record a first minimum GTD between a first pair of transmitters; and record a first maximum GTD between the first pair of transmitters; compute a first current GTD based on current measurements from the first pair of transmitters; and check for coverage within the WLAN based on the first current GTD being between the first minimum GTD and the first maximum GTD. - View Dependent Claims (13)
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14. A mobile device for locating a wireless local area network (WLAN), the mobile device comprising:
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means for recording geometric time difference (GTD) statistics for the WLAN comprising; means for recording a first minimum GTD between a first pair of transmitters; and means for recording a first maximum GTD between the first pair of transmitters; means for computing a first current GTD based on current measurements from the first pair of transmitters; and means for checking for coverage within the WLAN based on the first current GTD being between the first minimum GTD and the first maximum GTD. - View Dependent Claims (15)
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16. A computer program product, comprising a computer usable medium having a computer-readable program code embodied therein, said computer-readable program code adapted to be executed to implement a method for generating a report, said method comprising:
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recording geometric time difference (GTD) statistics for the WLAN comprising; recording a first minimum GTD between a first pair of transmitters; and recording a first maximum GTD between the first pair of transmitters; computing a first current GTD based on current measurements from the first pair of transmitters; and checking for coverage within the WLAN based on the first current GTD being between the first minimum GTD and the first maximum GTD.
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17. A non-volatile computer-readable storage medium including program code stored thereon, comprising program code to:
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record geometric time difference (GTD) statistics for the WLAN comprising program code to; record a first minimum GTD between a first pair of transmitters; and record a first maximum GTD between the first pair of transmitters; compute a first current GTD based on current measurements from the first pair of transmitters; and check for coverage within the WLAN based on the first current GTD being between the first minimum GTD and the first maximum GTD.
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Specification