Patent ID: 6937866
Filing Date: 2005-08-30
Classification: G01S,H04W

Abstract:
1. A method of providing a positioning service for plural terminals operating in a communication network, the terminals having receivers for receiving signals from transmission sources, and the method comprising the steps of a) making measurements of the signals received from one or more of the transmission sources by the receivers in a plurality of the terminals; b) transferring said measurements to at least one data node; c) creating at said at least one data node one or more records of one or more of said measurements; d) transferring at least some of the records to a computing node; e) maintaining a table of the records transferred to the computing node; and f) carrying out a computation, using at least part of the table, from which computation the positions or states of motion or relative positions or relative states of motion of said plural terminals and the transmission time offsets of the transmission sources are extractable.