METHOD AND SYSTEM FOR POSITIONING OF MOBILE TERMINAL INSIDE BUILDINGS BASED ON GLONASS-TYPE SIGNAL Russian patent published in 2014 - IPC G01S5/02 H04B7/216 

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to communication equipment and can be used in mobile communication systems. Stationary beacons consisting of several transmitters and one receiver serving for synchronisation of transmitters are used. Transmitters and the receiver contained in the beacon are synchronised with a common clock generator, and their position is fixed by means of radio transparent beacon housing. As navigation noise-like signals, GLONASS-type signal is used, the beginning of M-sequence of which for different signals transmitted on one and the same carrying frequency, is shifted as to delay by different values. Before the position is calculated, information on expected shift of M-sequence and other information is loaded to mobile terminal memory. Signals of transmitters are accompanied in the mobile terminal, angles of radiation of signals sent by transmitters tuned to one and the same carrier frequency, as well as pseudo-distances to all transmitters are determined, and the position is calculated.

EFFECT: improvement of accuracy and reliability of positioning inside buildings, which allows for arrangement inside rooms of a large number of positioning transmitting devices, requires no major changes to satellite navigational receivers or other components contained in mobile devices, such as for example a smart phone, as well as in non-admission of disturbances to existing navigation receivers.

19 cl, 7 dwg