WiFi Positioning Bench Test Method and Instrument
First Claim
1. A method of testing WiFi location circuitry and software of a mobile device under test (abbreviated DUT), the method including:
- coupling a test device in communication with a DUT;
generating and mixing signals that emulate at least ten WiFi access points (abbreviated APs) visible from the simulated DUT location at test times during a test;
wherein the emulated signal from each AP is characterized by at least a MAC address, SSID, wireless protocol, channel number, and signal strength that are reproducible by a test time reference;
wherein at least one emulated open access point provides two-way communication access for the DUT to a network;
sending the mixed signals from the test device to the DUT.
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Abstract
The present invention relates to simulation on a lab workbench of conditions that would be encountered by a mobile device during a so-called drive test, which involves transporting the mobile device along a course so that it encounters fading and changing wireless access points used normally to connect the mobile device to a wireless network but in this case used to locate the device. The instrument and method also support parametric testing of transceivers used for WiFi positioning and, optionally, GNSS positioning by the same mobile device used for WiFi positioning.
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Citations
21 Claims
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1. A method of testing WiFi location circuitry and software of a mobile device under test (abbreviated DUT), the method including:
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coupling a test device in communication with a DUT; generating and mixing signals that emulate at least ten WiFi access points (abbreviated APs) visible from the simulated DUT location at test times during a test; wherein the emulated signal from each AP is characterized by at least a MAC address, SSID, wireless protocol, channel number, and signal strength that are reproducible by a test time reference; wherein at least one emulated open access point provides two-way communication access for the DUT to a network; sending the mixed signals from the test device to the DUT. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A test device that tests WiFi location circuitry and software of a mobile device under test (abbreviated DUT), the device including:
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one or more signal generators and attenuators adapted to emulate at least ten WiFi access points (abbreviated APs) visible from the simulated DUT location at times during the test; means for determining characteristics of emulated APs at specific times during the test, including determining a MAC address, SSID, wireless protocol, channel number and signal strength for a particular AP, wherein the means for determining is coupled to the signal generators; a mixer that mixes the emulated APs for transmission to the DUT, coupled to the signal generators; and a wired or wireless channel coupled to the mixer and adapted to couple to the DUT. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification