05732354 is referenced by 206 patents and cites 16 patents.

A method and apparatus for determining the location of a mobile telephone within the serving area of a mobile telephone system are disclosed. A mobile switching center analyzes the calling mobile telephone number and called telephone number to determine if a location function is required. Upon initiation of the location function by the mobile switching center, a mobile location module calculates a location estimate of the mobile telephone. The mobile location module receives a list of signal strengths received by the mobile telephone from cell site antennas within the serving area. The distance between the mobile telephone and a plurality of cell site antennas is calculated using a technique which reduces the error component of the calculated distances. These reduced error distances are used to geometrically determine an estimate of the location area within the sewing area of a mobile telephone system.

Title
Method and apparatus for determining the location of a mobile telephone
Application Number
8/472082
Publication Number
5732354
Application Date
June 7, 1995
Publication Date
March 24, 1998
Inventor
Alan Denis MacDonald
Bellevue
WA, US
Agent
Jeffrey M Weinick
Assignee
AT&T Wireless Services
NJ, US
IPC
H04B 7/26
G01S 3/02
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