| US 7,576,694 B2 | ||
| Secure wireless user localization scheme using transmission range variation | ||
| Farooq Anjum, Somerset, N.J. (US); Byungsuk Kim, Kyunggi-do (Korea, Republic of); and Santosh Ghanshyam Pandey, Auburn University, Ala. (US) | ||
| Assigned to Toshiba America Research, Inc., Piscataway, N.J. (US); and Telcordia Technologies, Inc., Piscataway, N.J. (US) | ||
| Filed on Apr. 20, 2006, as Appl. No. 11/379,566. | ||
| Prior Publication US 2007/0247367 A1, Oct. 25, 2007 | ||
| Int. Cl. G01S 3/02 (2006.01); H04Q 7/20 (2006.01) | ||
| U.S. Cl. 342—464 [455/456.1] | 19 Claims |
| 1. A method for determining the location of a wireless device in a wireless network, comprising the steps of:
transmitting to said wireless device from a plurality of wireless network access points a plurality of encoded signals at
a plurality of different transmission power levels;
receiving from said wireless device a set of encoded signals detected by said wireless device from among said plurality of
transmitted encoded signals; and
determining the location of said wireless device as a function of said set of encoded signals received from said wireless
device.
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