Method and apparatus for finding the time shift between signals transmitted by at least one of a plurality of transmitters in a communication network and received by a receiver toA terminal.Method and apparatus for finding the time shift relative to a reference inside the terminal of a component of a signal transmitted from one of a plurality of transmitters in a network forCommunication and received by a receiver to a terminal, terminal of telecommunication, network communication, device or computing devices, program or computer programs, and,A method to calculate the position of a mobile terminal in a communication network

摘要

Method and apparatus for finding the time shift between signals transmitted by at least one of a plurality of transmitters in a communication network and received by a receiver toA terminal.Method and apparatus for finding the time shift relative to a reference inside the terminal of a component of a signal transmitted from one of a plurality of transmitters in a network forCommunication and received by a receiver to a terminal, terminal of telecommunication, network communication, device or computing devices, program or computer programs, and,A method to calculate the position of a mobile terminal in a communication network ".The present invention is to overcome the problem of audibility in CDMA communication networks, in which positioning services are provided using a separate sampling device (204),205, 206) for each transmitter (201, 202, 203), which sends to the computing device (208) a representation of the signals transmitted by the transmitter.Cross correlation of the representation sent back by the mobile terminal (207) with the representation sent back by the sampling device in the transmitter stronger is executed on the provisionsTiVo computer (208).And an estimate obscured that stronger signal is subtracted from an obfuscated version of the representation sent back by the mobile terminal (207) to reduce its effect on the signals res.These where possible. The steps of cross correlation and subtraction are iterated until no useful signal remain to be extracted.