Patent ID: 7429914
Filing Date: 2008-09-30
Classification: G01S,H04W

Abstract:
1. A method of determining the location of a first mobile appliance in a wireless communication system, comprising the steps of: (a) providing a reverse pilot channel; (b) transmitting from said first mobile appliance a reverse pilot signal over said reverse pilot channel wherein said reverse pilot signal is different from reverse pilot signal emitted by other mobile appliances; (c) recieving said first mobile appliance reverse pilot signal at a wireless location sensor; (d) determining an attribute of said first mobile appliance reverse pilot signal at said wireless location sensor; and, (e) determining the location of said first mobile appliance as a function of said attribute, wherein said first mobile appliance reverse pilot signal is a digital signal generated from an information bit data sequence of zeros, and wherein said first mobile appliance reverse pilot signal is quadrature scrambled by a pseudo-random sequence that is a function of the ESN of said first mobile appliance.